CN214577905U - Novel fluid supercharging device - Google Patents

Abstract

The invention provides a technical scheme of a novel fluid supercharging device, which comprises a shell, an impeller, a wheel shaft and the like, wherein the impeller comprises a wheel body, a large blade and a small blade, the wheel body is fixed on the wheel shaft and is arranged in a wheel cavity in the shell, the large blade is fixed on one side of the circumference of the wheel body, the small blade is fixed on the other side of the circumference of the wheel body, a large semi-circular auxiliary cavity is arranged at the corresponding periphery of the wheel cavity, a large semi-circular cavity ring is arranged between the wheel cavity and the large semi-circular auxiliary cavity, a C-shaped spacer is connected between the large semi-circular auxiliary cavity and the large semi-circular cavity ring and divides the large semi-circular auxiliary cavity into a plurality of sections of C-shaped auxiliary cavities, and a spiral channel taking the cavity ring as an axis is formed when the impeller cavity corresponds to the C-shaped auxiliary cavity.

Description

Novel fluid supercharging device

The technical field is as follows:

the invention relates to a supercharging machine, in particular to a fluid supercharging device.

Background art:

in the prior art, the closest prior art to the present application is a novel wheel type air compressing device technology with the patent number 201921084611.3 applied in 2019 in kuijiang, and although the technology has a plurality of advantages, the technology still has a defect, namely, pre-compression and main compression are respectively completed by two impellers, so that the length of an axle and the weight of a machine body are increased, the manufacturing cost is also increased, and the problem that high-pressure and low-pressure air compressing impellers cannot be completely matched and taken into consideration under the condition of different rotating speeds when the multistage impellers which are not solved in the pressurization industry work in cooperation is solved.

The invention content is as follows:

the invention aims to solve the technical problems that the novel fluid supercharging device has compact structure, lighter weight, lower cost and higher efficiency, optimizes the structures of a fluid supercharging impeller and a flow channel again, ensures that the supercharging impeller is more perfect and better conforms to fluid supercharging mechanics, ensures that the flow channel is more smooth and reasonable, and further improves the supercharging efficiency aiming at the defects in the prior art.

The novel fluid pressurization device is realized by the following technical measures: the impeller is composed of a wheel body, a wheel shaft, a large blade and a small blade, an impeller wheel cavity is arranged in the shell, the impeller is arranged in the impeller wheel cavity, the size of the impeller wheel cavity is matched with the rotation shape of the impeller, the wheel shaft is arranged at the center of the wheel body, a supporting bearing is arranged on the wheel shaft, the wheel shaft can be of a single-shoulder median structure which is only provided with a bearing at a motor end, namely a power end, and the other end is not provided with the bearing, the wheel shaft can also be of a bridge structure which is provided with bearings at two ends, a wheel sheet is arranged on the circumferential surface of the wheel body, the circumferential surface of the wheel body is divided into a large circumferential surface and a small circumferential surface by the wheel sheet, the circumferential surfaces of the two parts of the wheel body are in opposite inner arc shapes, the large blade is arranged on the large circumferential surface, the small blade is arranged on the small circumferential surface, and the top edges of the large blade, the small blade and the wheel sheet keep a non-contact sealing gap with the narrowest part of the inner wall of the corresponding impeller wheel cavity, the large blade and the small blade can be a radial straight unit flow structure or a backward inclined arc two-element flow structure, the small blade and the large blade can be three-element flow structures of which the tail ends, namely centrifugal ends, are radial middle sections C twisted centripetal ends and are shovel-shaped undercut wing angles extending laterally axially, the small blade and the large blade can also be three-element flow structures of which the tail ends, namely the centrifugal sections, are mutually spaced, the tail ends, namely the centrifugal sections of the long blades are radial centripetal sections and are forward-inclined undercut wing angles, or three-element flow structures of which the tail ends, namely the centrifugal sections, are backward swept, namely the centrifugal sections are inclined against the rotation direction of the impeller, are s-shaped twisted middle sections, namely the radial ends are downward-inclined undercut wing angles, the large blade and the small blade on the impeller are three-element flow structures of which are mutually spaced and matched, the tail end of a long blade, namely a centrifugal section, is a sweepforward middle section, namely a C-shaped twisted centripetal end, and a downward-cut wing angle side extends forwards, and can also be a composite three-dimensional flow structure which can be used on the novel supercharging device in the prior art, the axially outer long edges of the large blade and the small blade can be an open structure without being blocked by a wheel sheet or a semi-closed structure with the wheel sheet being blocked, namely the axially outer long edges of the large blade and the small blade are blocked by the wheel sheet, the wheel sheet can be an integral structure fixed with a wheel body, the large blade and the small blade together, the small blade and the large blade form an integral structure side by side at the top end, namely the centrifugal end, the top end of the wheel sheet can be longer than the large blade and the small blade, the long parts of the wheel sheet extend into a groove at the top end of a wheel cavity of the impeller, the long parts and the small blade keep a sealing gap from contacting, and the wheel sheet can be a split structure with a plurality of radial independent units between two adjacent blades, the bottom edge of the wheel sheet between two adjacent blades in the split structure is movably connected through a tongue sheet shaft to form a movable tongue sheet, the top edge of the movable tongue sheet uses the tongue sheet shaft as an axis and uses the corresponding surfaces of the adjacent radial blades as two sliding edges to freely slide in the distance between the width sum of the top surfaces of the large blades and the small blades, the shape of the movable tongue sheet is matched with the cross section of a cavity between the two adjacent radial blades, the two radial edges of the movable tongue sheet respectively keep relative sliding seal with the corresponding surfaces of the two adjacent radial blades, when the top edge of the movable tongue sheet slides to any one of the outer edges of the large blades and the small blades to block the inner edge of the wheel sheet, the movable tongue sheet and the contact surfaces form relative contact seal, an air inlet and an air outlet are arranged on the wheel cavity of the impeller, the air inlet is arranged on the center of the side surface of the wheel cavity corresponding to the bottom of the large blades, and the air outlet is arranged on the circumferential surface of the wheel cavity corresponding to the top end of the small blades, the impeller wheel cavity corresponding to the small blade side in the shell is externally provided with a large semicircular auxiliary cavity which is communicated with the wheel cavity, the large semicircular auxiliary cavity in the shell is wrapped on the impeller wheel cavity corresponding to the small blade except the periphery of the exhaust port on the small blade side, a large semicircular cavity ring can be arranged between the large semicircular auxiliary cavity and the wheel cavity, the diameter of the large semicircular cavity ring is smaller than that of the large semicircular auxiliary cavity, the cross section of the large semicircular auxiliary cavity is C-shaped, the upper opening of the large semicircular auxiliary cavity with the C-shaped cross section is arranged on the impeller wheel cavity corresponding to the top end of the small blade and is communicated with the small blade cavity at the top end of the small blade through the impeller cavity, the lower opening of the large semicircular auxiliary cavity with the C-shaped cross section is arranged on the impeller wheel cavity corresponding to the bottom end of the small blade and is communicated with the small blade cavity at the bottom end of the small blade through the impeller wheel cavity, and the large semicircular auxiliary cavity with the small blade cavity with the C-shaped cross section forms an annular cavity which takes the large semicircular auxiliary cavity as an inner ring shaft The exhaust port is of an involute structure from the impeller wheel cavity to the outside along the rotation direction of the impeller on the circumferential surface of the impeller wheel cavity corresponding to the top end of the small blade, the exhaust port is communicated with the impeller wheel cavity to the outside and is communicated with the exhaust channel to the outside, the air inlet is arranged on the center of the side surface of the impeller wheel cavity corresponding to the bottom of the large blade, the air inlet is communicated with the bottom of the cavity of the large blade through the impeller wheel cavity to the inside and is communicated with the atmosphere to the outside, the impeller wheel cavity corresponding to the top end of the large blade is of an involute structure along the rotation direction of the impeller, the tail end, namely the maximum end, extends through the exhaust port and is communicated with the upper opening of the large semicircular auxiliary cavity with the C-shaped cross section corresponding to the top end of the small blade, the cross section of the large semicircular cavity ring is not concentric with the cross section of the large semicircular auxiliary cavity, namely, the large semicircular cavity is deviated into the large semicircular auxiliary cavity to ensure that the cross section of the large semicircular auxiliary cavity is of the C-shaped cavity with a narrow upper part and wide lower part, the cross circle of the large semicircular cavity ring is matched with the radian of the long edge of the axial side of the corresponding small blade and keeps a non-contact sealing gap, a plurality of C-shaped spacers which are the same as the cross section of the large semicircular cavity ring can be arranged in the large semicircular cavity, the large semicircular cavity is divided into a plurality of C-shaped auxiliary cavity sections by the C-shaped spacers, the bottoms, i.e. centripetal ends, of the plurality of C-shaped auxiliary cavity sections are corresponding to the bottoms of the small blade cavities and are communicated with the bottoms of the small blade cavities through impeller cavities, the tops, i.e. centrifugal ends, of the plurality of C-shaped auxiliary cavity sections are communicated with the small blade cavities at the top ends of the small blades through the impeller cavities on the outer circular surface of the impeller cavities, when the side edges of the small blades correspond to the C-shaped spacers in the large semicircular cavity ring, the small blade cavities and the C-shaped auxiliary cavity sections form a spiral channel which takes the large semicircular cavity ring as an axis, and a plurality of C-shaped spacers which are matched with the cross section of the large semicircular cavity ring are arranged in the large semicircular cavity ring auxiliary cavity, the C-shaped partition divides the large semicircular auxiliary cavity into a plurality of C-shaped auxiliary cavity sections, the bottoms, namely centripetal ends, of the plurality of C-shaped auxiliary cavity sections correspond to the bottom cavity of the small blade and are communicated with the bottom of the small blade cavity of the small blade through an impeller cavity, the tops, namely centrifugal ends, of the plurality of C-shaped auxiliary cavity sections are arranged on the small blade side of the outer circular surface of the impeller cavity and are communicated with the small blade cavity at the top end of the small blade through the impeller cavity, when the side edge of the small blade is opposite to the partition in the large semicircular auxiliary cavity, the small blade cavity and the plurality of C-shaped auxiliary cavity sections form a spiral channel taking the large semicircular ring as a spiral shaft, the exhaust port is arranged on the outer circular surface of the impeller cavity above the top end of the small blade corresponding to the bottom port of the spiral large semicircular auxiliary cavity, the cross section of the large semicircular cavity ring is not concentric with the cross section of the large semicircular auxiliary cavity, namely, the large semicircular cavity ring is arranged in the large semicircular auxiliary cavity in a deviated mode so that the cross section of the large semicircular auxiliary cavity is narrow at the upper part and the lower part of the large semicircular cavity The cross section of the C-shaped auxiliary cavity is a large semi-circular auxiliary cavity formed by a plurality of sections, the air outlet is a thin end and is in a spiral structure, namely, the spiral large semi-circular structure is gradually enlarged from the air outlet to the other end along the rotation direction of the impeller, a spiral line rotating from the tail end, namely the maximum end to the thinnest end is tangent to the rotation direction of the impeller to form an acute angle opposite impact shape, the bearing can be any structural form of bearing which can be used on the novel fluid supercharging device in the prior art, the wheel shaft is provided with a sealing device, the two axial end surfaces of the wheel body of the impeller can be provided with concave and convex airtight rings, the wall of the shell wheel cavity corresponding to the concave and convex airtight rings on the impeller is provided with concave and convex airtight ring grooves on the wall of the shell wheel cavity, the concave and convex airtight rings on the impeller are mutually embedded with the concave and convex airtight ring grooves on the wall of the shell wheel cavity to keep a micro airtight gap, the large semi-circular auxiliary cavity can be a convergent spiral structure with a thin end at the exhaust port, namely a spiral large semi-circular structure which is gradually enlarged from the exhaust port to the other end from the rotation direction of the impeller, a spiral line which rotates from the tail end, namely the maximum end, to the thinnest end is tangent to the rotation direction of the impeller to form acute angle-shaped opposite impact, the exhaust port is in an involute structure from the impeller wheel cavity to the rotation direction of the impeller on the circumferential surface of the impeller wheel cavity corresponding to the top end of the small blade, the impeller wheel cavity corresponding to the top end of the large blade is in an involute structure along the rotation direction of the impeller, the tail end, namely the maximum end extends through the exhaust port and then is communicated with the upper port of the C-shaped auxiliary cavity corresponding to the top end of the small blade, the axial width of the impeller wheel cavity corresponding to the top end of the small blade is gradually reduced from the exhaust port to the other end along the rotation direction of the impeller until the exhaust port is in a convergent structure, the air inlet can be internally provided with a bearing seat, a supporting edge strip is arranged between the bearing seat and the air inlet, a guide cone can be arranged on the bearing seat, a plurality of impellers can be respectively arranged in respective wheel cavities to form a multi-impeller structure in the shell, the air inlet and the air outlet of each impeller can form a multi-stage supercharging structure in a series connection mode in the multi-impeller structure, the impellers in the multi-stage supercharging structure can be arranged on the same wheel shaft or different wheel shafts, the different wheel shafts can be connected by a speed change device, and the air outlet of the front impeller cavity and the air inlet of the rear impeller cavity in the impeller cavities are connected in series to form a multi-stage series connection speed change supercharging structure. The speed change device can be an external gear speed change structure, an internal gear speed change structure or a planetary speed change mechanism formed by a planetary gear set, the speed change device can be provided with a speed change control mechanism, the speed change control mechanism can be an electromagnetic control mechanism, a mechanical control mechanism or any speed change control mechanism which can be used on the novel fluid supercharging device in the prior art, the wheel shaft can be provided with a power device, the power device can be an engine for providing shaft power for the impeller, an alternating current motor, a direct current motor and a permanent magnet variable frequency motor for providing shaft power for the impeller, or other power machines in the prior art for providing shaft power for the impeller, the power device and the shell can be directly fixed together by bolts or indirectly fixed on the same bracket, the power output shaft of the power device and the impeller shaft can be coaxially connected, can be connected through a coupling, can be connected through a split shaft, can be electromagnetically coupled, can be connected through a hydraulic coupling, can be connected through a chain wheel and a chain, can be connected through a gear transmission mechanism, can be connected through a belt pulley, can also be connected through other structural forms which can provide power output in the prior art, the gear transmission mechanism can be an external gear speed change mechanism, can also be an internal gear speed change mechanism, and can also be a planetary speed change mechanism formed by a planetary gear set, a speed change device can be provided with a speed change control mechanism, the speed change control mechanism can be an electromagnetic control mechanism, can also be a mechanical control mechanism, and can also be any speed change control mechanism which can be used on the novel fluid supercharging device in the prior art.

The novel fluid supercharging device can be suitable for supercharging work of various fluids, for space saving, the working principle of the fluid supercharging device is briefly explained below only by taking air at normal temperature as a medium, mechanical energy output by a power device is input through a wheel shaft to drive an impeller to rotate at high speed, air outside a shell enters a wheel cavity at the bottom of a large blade of the impeller through an air inlet on the side surface of the wheel cavity of the impeller, the air at the air inlet is called as first air, the first air enters the bottom of the cavity of the large blade on the side surface of the impeller through the air inlet, the first air in the bottom of the cavity of the large blade generates centrifugal force along with the high-speed rotation of the impeller, the first air moves towards the outer circular surface of the large blade, namely the top end of the large blade, along with the high-speed rotation of the impeller under the action of the centrifugal force, and because the large blade is narrow at the upper part and wide at the lower part, the first air is forced to narrow and accelerate and is gathered and supercharged at the top end of the large blade, the pressurized first gas enters the semi-annular diffusion cavity through the air outlet of the large blade, the first gas continuously reduces the speed and pressurizes along with the increase of the space of the diffusion cavity in the diffusion cavity, the other side of the impeller, namely the side of the small blade, is thrown away to enter the top end of the small blade due to the high-speed rotation of the impeller, the bottom of the cavity of the small blade generates negative pressure, after the small blade rotates through the air outlet, the air in the C-shaped auxiliary cavity rapidly enters the bottom of the cavity of the small blade through the lower opening of the C-shaped auxiliary cavity under the action of pressure difference, along with the high-speed rotation of the impeller, the air in the C-shaped auxiliary cavity is continuously and continuously taken away by the small blade and thrown away to enter the upper opening of the front next section of the C-shaped auxiliary cavity, negative pressure is generated in the bottom of the C-shaped auxiliary cavity, the continuously reduced-speed and pressurized first gas rapidly enters the C-shaped auxiliary cavity and then enters the lower opening of the C-shaped auxiliary cavity along the cavity ring under the action of the pressure difference when reaching the upper opening of the front section of the C-shaped auxiliary cavity, and is reduced-speed and pressurized again, along with the high-speed rotation of the impeller, the first gas which is subjected to speed reduction and pressurization again in the lower opening of the C-shaped auxiliary cavity is continuously taken away by the small blades and thrown away and enters the upper opening of the front C-shaped auxiliary cavity, the first gas continuously takes away from the lower opening of the C-shaped auxiliary cavity by the small blades along with the high-speed rotation of the impeller and then thrown away and enters the upper opening of the front C-shaped auxiliary cavity, the first gas descends to the lower opening of the front C-shaped auxiliary cavity again along a cavity ring in the C-shaped auxiliary cavity again and is subjected to speed reduction and pressurization again, the first gas which is subjected to speed reduction and pressurization again is also taken away by the small blades and thrown away and enters the upper opening of the front C-shaped auxiliary cavity, and along with the high-speed rotation of the impeller, the first gas continuously performs spiral circulation around the cavity ring in the small blade cavity and the C-shaped auxiliary cavity under the action of the small blades, and each circulation needs to complete four processes of suction, accelerated energization, throwing away and speed reduction and pressurization, the energy of the first gas is continuously increased along with the increase of the cycle times, the first gas which becomes the high-energy gas is formed into the high-energy gas with higher temperature and pressure when reaching the exhaust port, the first gas which becomes the high-energy gas finally enters the exhaust port through the exhaust port and is exhausted, when the C-shaped auxiliary cavity is internally provided with the C-shaped partition, the C-shaped auxiliary cavity is divided into a plurality of C-shaped auxiliary cavity sections by the C-shaped partition, the air at the bottom of the cavity of the small blade is thrown away to enter the top end of the small blade along with the high-speed rotation of the impeller, the negative pressure is generated at the bottom of the cavity of the small blade, the first C-shaped auxiliary cavity section formed by the separation of the C-shaped partition in front of the exhaust port is also called as a first auxiliary cavity, the air in the first auxiliary cavity rapidly enters the bottom of the cavity of the small blade through the first C-shaped auxiliary cavity section under the action of pressure difference, and the air in the first auxiliary cavity is continuously thrown away by the small blade to enter the upper port of the next C-shaped auxiliary cavity section along with the high-speed rotation of the impeller, negative pressure is generated in the first auxiliary cavity, first gas which is continuously subjected to speed reduction and pressurization in the pressure expansion cavity rapidly enters the first auxiliary cavity under the action of pressure difference when reaching an upper opening of the first auxiliary cavity, enters a lower opening of the first auxiliary cavity along a cavity ring in the first auxiliary cavity and is subjected to speed reduction and pressurization again, the first gas which is subjected to speed reduction and pressurization in the lower opening of the first auxiliary cavity is continuously thrown away by the small blades and enters an upper opening of a next C-shaped auxiliary cavity section along with high-speed rotation of the impeller, the first gas is continuously taken away from the lower opening of the first auxiliary cavity by the small blades and is thrown away into an upper opening of the second auxiliary cavity along with high-speed rotation of the impeller, the first gas which is subjected to speed reduction and pressurization by the wall of the second auxiliary cavity, namely the C-shaped partition plate is forced to be subjected to speed reduction and pressurization and descends into a lower opening of the second auxiliary cavity along the cavity ring in the second auxiliary cavity, the first gas which is subjected to speed reduction and pressurization again is also taken away by the small blades and enters a third auxiliary cavity, the first gas is forced to be subjected to speed reduction and pressurization again by the blocking of the wall of the third auxiliary cavity and then to descend to the lower port of the third auxiliary cavity along the cavity ring in the third auxiliary cavity, the first gas is forced to continuously perform spiral circulation around the cavity ring in the small blade cavity and each C-shaped auxiliary cavity section divided by the C-shaped spacer under the action of the small blades along with the high-speed rotation of the impeller, each circulation also needs to complete four processes of suction, accelerated energization, flinging and speed reduction and pressurization, the energy of the first gas is continuously increased along with the increase of the circulation times, the first gas is formed into high-energy gas with higher temperature and pressure when reaching the exhaust port, and finally the first gas which is formed into the high-energy gas enters the exhaust port through the exhaust port and is exhausted, and as can be seen from the above description, the first gas is subjected to forced spiral circulation by the blocking of the wall of the C-shaped auxiliary cavity section, namely the C-shaped spacer, in the C-shaped auxiliary cavity section divided by the C-shaped spacer, the first gas is in the same working principle as the multistage axial flow compressor without the static blades, the first gas is in the same working principle as the multistage axial flow compressor with the static blades, the first gas is in the same working principle as the multistage axial flow compressor without the static blades, and the working principle is that the C-shaped auxiliary cavity without the C-shaped blades is different from the C-shaped blades, when the impeller is provided with the movable tongue piece, the first gas enters the bottom of the cavity of the large blade on the side surface of the impeller through the air inlet, the first gas in the bottom of the cavity of the large blade generates centrifugal force along with the high-speed rotation of the impeller, the first gas moves towards the direction of the outer circular surface of the impeller, namely the top end of the large blade, in the cavity of the large blade along with the high-speed rotation of the impeller under the action of the centrifugal force, because the large blade is narrow at the top and wide at the bottom, the first gas is forced to narrow and accelerate and is gathered and pressurized at the top end of the large blade when moving outwards along the centrifugal direction of the large blade under the action of the centrifugal force, the air at the bottom of the cavity of the small blade is thrown away and enters the top end of the small blade due to the high-speed rotation of the impeller at the other side of the small blade, negative pressure is generated at the bottom of the cavity of the small blade, and after the small blade rotates through the air outlet, the air in the C-shaped auxiliary cavity rapidly enters the bottom of the cavity of the C-shaped auxiliary cavity under the action of pressure difference, along with the high-speed rotation of the impeller, air in the C-shaped auxiliary cavity is continuously taken away by the small blades and thrown away into the front C-shaped auxiliary cavity upper opening, negative pressure is generated in the C-shaped auxiliary cavity, at the moment, pressurized first air continuously gathered at the top end of the large blade reaches the front C-shaped auxiliary cavity upper opening of the exhaust port, the top end of the tongue piece is rapidly pushed to slide towards one side of the small blade under the action of pressure difference, so that the top end of the large blade cavity is communicated with the C-shaped auxiliary cavity upper opening, the first air enters the C-shaped auxiliary cavity upper opening at a high speed and downwards enters the C-shaped auxiliary cavity lower opening along a cavity ring, the first air continuously enters the C-shaped auxiliary cavity upper opening from the top end of the large blade cavity along with the high-speed rotation of the impeller, and the first air in the C-shaped auxiliary cavity lower opening is also continuously taken away by the small blades and thrown away and enters the front C-shaped auxiliary cavity upper opening along with the high-speed rotation of the impeller, so that the pressure in the front C-shaped auxiliary cavity upper opening is continuously increased, the pressure at the top end of the small blade is continuously increased, when the pressure at the top end of the small blade exceeds the pressure at the top end of the large blade, the top end of the tongue piece slides to one side of the large blade under the action of pressure difference, so that a channel leading the top end of a cavity of the large blade to the upper opening of the C-shaped auxiliary cavity is gradually narrowed, the pressure in the C-shaped auxiliary cavity close to the exhaust opening is highest, the top end of the tongue piece at the position almost completely closes the channel between the top end of the cavity of the large blade and the upper opening of the C-shaped auxiliary cavity, air in the cavity of the large blade can only be gathered and pressurized at the top end of the cavity of the large blade under the action of centrifugal force, after the impeller rotates through the exhaust opening, the air in the C-shaped auxiliary cavity in front of the exhaust opening is driven by the small blade to be thrown to the C-shaped auxiliary cavity in front of the large blade, the compressed air with higher pressure at the top end of the cavity of the large blade pushes the top end of the tongue piece to slide to the side to open the channel between the cavity of the upper opening of the C-shaped auxiliary cavity of the large blade, and the C-shaped auxiliary cavity with higher pressure in front of the first air exhaust opening at high speed In the cavity upper port, the size of the channel opening of the large blade cavity upper port and the C-shaped auxiliary cavity upper port is greatly influenced by the pressure of the exhaust port, when the pressure of the exhaust port is lower, the tongue piece is deviated to one side of the small blade, the first gas in the large blade cavity upper port can directly enter the C-shaped auxiliary cavity upper port and the exhaust port, when the pressure of the exhaust port is higher, the first gas in the large blade cavity upper port can only push the tongue piece top end to slide to one side of the small blade after the impeller rotates the exhaust port to open the C-shaped auxiliary cavity upper port in front of the exhaust port to enter the C-shaped auxiliary cavity in front of the exhaust port, the pressure in the large blade cavity upper port is reduced, along with the continuous forward rotation of the impeller, the pressure of the small blade side is continuously increased, the tongue piece slides to the large blade side, and the channel of the large blade cavity upper port and the C-shaped auxiliary cavity upper port is gradually narrowed. It can be seen from the above description that, the effect of tongue piece is when gas vent pressure is higher, first gas can only get into the preceding C shape auxiliary chamber upper port of gas vent, do spiral pressure boost circulation in C shape auxiliary chamber and little blade cavity and just discharged after the gas vent, when gas vent pressure is lower, first gas can get into C shape auxiliary chamber upper port and gas vent simultaneously, it is exactly that partial first gas in the big blade cavity can directly get into the gas vent and discharge and no longer need not to do spiral pressure boost circulation through C shape auxiliary chamber and little blade, the displacement when having increased the low pressure, can the big blade cavity get into C shape auxiliary chamber exhaust volume again of automatically regulated during high pressure, realize the automatic matching of the displacement and pressure between big blade and the little blade, the supercharging efficiency of impeller has further been improved. In order to ensure the normal operation of the machine element, the shell can be provided with radiating fins and play a role of strengthening the shell, in order to output compressed gas with higher pressure, a plurality of impellers can be arranged on the same wheel shaft, each impeller synchronously rotates according to the same rotating speed, first gas firstly enters each impeller cavity of the booster impeller through the air inlet of the booster impeller at the forefront, the air is energized by the booster impeller in the booster impeller and then enters the next impeller air inlet through the air outlet of the booster impeller, the first gas enters the large blade cavity at the bottom of the large blade of the next impeller through the next impeller air inlet, the first gas is forced to be accelerated and thrown to the top end of the large blade along with the high-speed rotation of the impeller, the first gas is forced to be narrowed and accelerated along the outward centrifugal direction of the large blade under the action of centrifugal force and is forced to be accelerated and gathered and pressurized at the top end of the large blade, the pressurized first gas enters the semi-annular pressure expansion cavity through the air outlet of the large blade, the first gas continuously reduces the speed and pressurizes along with the increase of the space of the diffusion cavity in the diffusion cavity, the other side of the impeller, namely the small blade side, is rotated at a high speed by the impeller, the air at the bottom of the small blade cavity is thrown away to enter the top end of the small blade, negative pressure is generated at the bottom of the small blade cavity, after the small blade rotates through the exhaust port, the air in the C-shaped auxiliary cavity rapidly enters the bottom of the small blade cavity through the lower opening of the C-shaped auxiliary cavity under the action of pressure difference, along with the high-speed rotation of the impeller, the air in the C-shaped auxiliary cavity is continuously thrown away by the small blade and enters the upper opening of the front next section of the C-shaped auxiliary cavity, negative pressure is generated in the bottom of the C-shaped auxiliary cavity, when the first gas continuously reduced the speed and pressurized reaches the upper opening of the C-shaped auxiliary cavity in front of the exhaust port, the first gas rapidly enters the C-shaped auxiliary cavity along with the action of the pressure difference, enters the lower opening of the C-shaped auxiliary cavity and is reduced and pressurized again along with the high-speed rotation of the impeller, the first gas after the speed reduction and pressurization in the lower opening of the C-shaped auxiliary cavity is continuously taken away by the small blades and is thrown away and enters the upper opening of the front C-shaped auxiliary cavity, the first gas is continuously taken away from the lower opening of the C-shaped auxiliary cavity by the small blades along with the high-speed rotation of the impeller and then enters the upper opening of the front C-shaped auxiliary cavity, the first gas descends to the lower opening of the front C-shaped auxiliary cavity again along a cavity ring in the C-shaped auxiliary cavity again and is also subjected to speed reduction and pressurization again, the first gas after the speed reduction and pressurization is also taken away by the small blades and is thrown away and enters the upper opening of the front C-shaped auxiliary cavity again, the first gas continuously performs spiral circulation around the cavity ring in the small blade cavity and the C-shaped auxiliary cavity under the action of the small blades along with the high-speed rotation of the impeller, each circulation is to finish four processes of suction, accelerated energization, throwing away and speed reduction and pressurization, and the energy of the first gas is also continuously increased along with the increase of the circulation times, when the first gas reaches the exhaust port, the first gas becomes high-energy gas with higher temperature and pressure, the first gas which becomes the high-energy gas finally enters the exhaust passage through the exhaust port, is exhausted into the next impeller air inlet, continues to repeat the pressurization process in the previous impeller, repeatedly enters the impeller cavity and the C-shaped auxiliary cavity, absorbs energy from the impeller blades for multiple times, becomes the high-energy gas, finally enters the next impeller air inlet through the exhaust port, is repeatedly applied with energy by the next impeller for multiple times, the first gas which is repeatedly applied with energy for multiple times becomes ultrahigh-energy gas, and is exhausted through the exhaust port of the impeller cavity at the rearmost part, when a plurality of impellers are arranged on different wheel shafts connected through the speed change device in the shell, the speed change device among the impellers can enable the wheel shafts to rotate at different speed change ratios under the regulation and control of the speed change control mechanism, the first gas firstly enters the cavity of the supercharging impeller at the forefront, the energy is applied by the booster impeller in the foremost booster impeller, then the energy enters the next impeller air inlet through the air outlet, the energy enters the bottom cavity of the next impeller blade through the next impeller air inlet, the energy is applied by the next impeller again along with the high-speed rotation of the impeller, then the energy enters the next impeller air inlet through the air outlet, the energy is applied by the next impeller again, the first gas after the energy is repeatedly applied for many times finally forms high-temperature and high-pressure high-energy gas, the high-temperature and high-pressure high-energy gas is discharged through the air outlet of the impeller cavity, when the speed change device is arranged on the wheel shaft between the impellers, the impellers can rotate according to different rotation speed ratios, the exhaust quantity and the exhaust pressure between the impellers can realize the optimal adaptive matching, in order to drive the motor and the bearing to have better working environment, the air inlet channel arranged in the power device can rotate at high speed along with the wheel shaft during working, the air with relatively low external temperature takes away heat on the power device and the bearing when passing through the fixed grids on the power device and the bearing, so that the temperature of the power device and the bearing is effectively reduced, the power device and the bearing can normally work at proper temperature, and the concave-convex air-tight ring on the impeller and the concave-convex air-tight ring on the wall of the wheel cavity as well as the central wheel sheet of which the top end of the impeller is higher than the large blade and the small blade can effectively block the leakage of high-energy gas.

To sum up, when the novel fluid supercharging device works, air firstly enters the small blade side after being supercharged by the large blade and then enters the C-shaped auxiliary cavity and the small blade cavity by taking the cavity ring as the axis to perform continuous spiral supercharging circulation, and becomes high-energy gas with higher pressure after continuous and repeated spiral supercharging circulation, the novel fluid supercharging device has a unique tongue piece design, when the pressure of the exhaust port is higher, the compressed air in the large blade cavity can only enter the upper opening of the C-shaped auxiliary cavity in front of the exhaust port, the compressed air in the C-shaped auxiliary cavity and the small blade cavity can be discharged until the exhaust port is formed by spiral supercharging circulation, when the pressure of the exhaust port is lower, the compressed air in the large blade cavity can simultaneously enter the upper opening of the C-shaped auxiliary cavity and the exhaust port, and part of the compressed air in the large blade cavity directly enters the exhaust port to be discharged without passing through the C-shaped auxiliary cavity and the small blade and further without spiral supercharging circulation, the air displacement when having increased the low pressure, the air displacement that can automatically regulated big blade cavity emits into C shape auxiliary chamber again during high pressure, realize the automatic matching of tolerance and pressure between big blade and the lobule, further improved the supercharging efficiency of impeller, it is thus obvious, impeller among the novel fluid supercharging device fuses centrifugal supercharging impeller and swirl impeller of calming anger among the prior art in an organic whole, reduced compressor arrangement's whole length, strengthened shaft rigidity, improved among the prior art the insufficient problem of swirl impeller of calming anger among the prior art, the biggest characteristics have changed the drawback that the high, low pressure impeller of calming anger can not match completely and compromise under the different rotational speed circumstances, compare with prior art and have obvious progress and show the effect.

Description of the drawings:

fig. 1, 2, 3, 4 show a first embodiment in common.

Fig. 1 is a schematic view of an axial vertical cutting structure of the first embodiment.

Fig. 2 is a schematic view of the cross-sectional structure of fig. 1 taken along line a.

Fig. 3 is a schematic cross-sectional view taken along line B in fig. 1.

Fig. 4 is a schematic view of the axial miter structure of fig. 2 and 3 taken along line C.

Fig. 5, 6, 7, 8 show a second embodiment in common.

Fig. 5 is a schematic view of an axial vertical cutting structure of the second embodiment.

Fig. 6 is a cross-sectional view taken along line a in fig. 5.

Fig. 7 is a cross-sectional view taken along line B in fig. 5.

Fig. 8 is a schematic view of the axial direction bevel structure along the line C in fig. 6 and 7.

Fig. 9, 10, 2, 3 show a third embodiment in common.

Fig. 9 is a schematic view of an axial vertical cutting structure of the third embodiment.

Fig. 2 is a schematic cross-sectional view taken along line a in fig. 9.

Fig. 3 is a cross-sectional view taken along line B in fig. 9.

Fig. 10 is a schematic view of the axial oblique cutting structure along the line C in fig. 2 and 3.

Fig. 11, 12, 6, and 7 collectively show a fourth embodiment.

Fig. 11 is a schematic view of an axially rigid structure of the fourth embodiment.

Fig. 6 is a cross-sectional view taken along line a in fig. 11.

Fig. 7 is a cross-sectional view taken along line B in fig. 11.

Fig. 12 is a schematic view of the axial direction bevel structure along the line C in fig. 6 and 7.

Fig. 13, 14, 15, and 16 collectively show a fifth embodiment.

FIG. 13 is a schematic view of an axially rigid structure of the fifth embodiment.

Fig. 14 is a cross-sectional view taken along line a in fig. 13.

Fig. 15 is a cross-sectional view taken along line B in fig. 13.

Fig. 16 is a schematic view of the axial direction bevel structure along the line C in fig. 14 and 15.

Fig. 17, 18, 14, and 15 collectively show a sixth embodiment.

Fig. 17 is a schematic view of an axial vertical cut structure of the sixth embodiment.

Fig. 14 is a cross-sectional view taken along line a in fig. 17.

Fig. 15 is a cross-sectional view taken along line B in fig. 17.

Fig. 18 is a schematic view of the axial direction bevel structure along the line C in fig. 14 and 15.

Fig. 19, 20, 21, 22, 23, 6, and 7 collectively show a seventh embodiment.

Fig. 19 is a schematic view of an axial vertical cut structure of the seventh embodiment.

Fig. 6 is a cross-sectional view taken along line a in fig. 19.

Fig. 7 is a cross-sectional view taken along line B in fig. 19.

Fig. 20 is a cross-sectional view taken along line a' of fig. 19.

Fig. 21 is a cross-sectional view taken along line B' in fig. 19.

Fig. 22 is a schematic view of the axial oblique cutting structure along the line C in fig. 6, 7, 20 and 21.

Fig. 23 is a schematic view of the axial cut-flat configuration of fig. 21 taken along line D.

Fig. 24, 25, 6, and 7 collectively show an eighth embodiment.

Fig. 24 is a schematic view of an axial vertical cut structure of the eighth embodiment.

Fig. 6 is a cross-sectional view taken along line a in fig. 24.

Fig. 7 is a cross-sectional view taken along line B in fig. 24.

Fig. 25 is a schematic view of the axial miter cut arrangement of fig. 6 and 7 taken along line C.

Fig. 26, 27, 28, 29 collectively show a ninth embodiment.

Fig. 26 is a schematic view of an axial vertical cut structure of the ninth embodiment.

Fig. 27 is a cross-sectional view taken along line a in fig. 26.

Fig. 28 is a cross-sectional view taken along line B in fig. 26.

Fig. 29 is a schematic view of the axial direction bevel structure of fig. 26 and 27 along the line C.

Fig. 30, 31, 32, 20, 21, 6, and 7 collectively show a tenth embodiment.

Fig. 30 is a schematic view of an axial vertical cut structure of the tenth embodiment.

Fig. 6 is a cross-sectional view taken along line a in fig. 30.

Fig. 7 is a cross-sectional view taken along line B in fig. 30.

Fig. 20 is a cross-sectional view taken along line a' of fig. 30.

Fig. 21 is a cross-sectional view taken along line B' in fig. 30.

Fig. 31 is a schematic view of the axial oblique cutting structure along the line C in fig. 6, 7, 20 and 21.

Fig. 32 is a schematic view of the axial cut-flat configuration of fig. 21 taken along line D.

In the figure, 1 is a shell, 2 is a wheel body, 2 'is a previous impeller wheel body, 2' is a supercharging impeller wheel body, 3 is a wheel shaft, 3 'is a supercharging impeller wheel shaft, 3' is a previous impeller wheel shaft, 4 is a large blade, 4 'is a small blade, 4' is a supercharging impeller blade, 5 is a C-shaped spacer, 5 'is a previous impeller C-shaped spacer, 6 is a power device, 6' is a fixed grid, 6 'is a power shaft, 7 is a large blade cavity, 7' is a small blade cavity, 8 is a wheel cavity air inlet, 8 'is a previous impeller wheel cavity air inlet, 8' is a supercharging impeller wheel cavity air inlet, 9 is a large blade exhaust port, 9 'is a wheel exhaust port, 10 is a C-shaped auxiliary cavity, 10' is a previous impeller C-shaped auxiliary cavity, 10 'is a diffusion cavity, 11 is a bearing, 12 is a previous impeller diffusion cavity, 13 is an exhaust passage, 13' is a previous impeller, 14 is a speed change device, 15 is a speed change control mechanism, 16 is a sealing device, 17 is an annular groove, 18 is a central wheel piece, 18 'is a large-blade wheel piece, 18' is a small-blade wheel piece, 19 is an airtight ring, 20 is a wheel cavity, 20 'is a previous impeller wheel cavity, 21 is a radiating fin, 22 is a bolt, 23 is a cavity ring, 23' is a previous impeller cavity ring, 24 is the rotation direction of the impeller, 25 is an auxiliary cavity spiral line, 26 is a tongue piece, and 27 is a tongue piece shaft.

The specific implementation mode is as follows:

the fluid pressurizing device can be applied to pressurizing work of various fluids, and for saving space, the fluid pressurizing device is further described by taking air at normal temperature as a medium through the following ten embodiments and the attached drawings.

Fig. 1, 2, 3, and 4 collectively show a first embodiment of the novel fluid pressure increasing device, and it can be seen from the drawings that the novel fluid pressure increasing device shown in this embodiment is mainly composed of a housing 1, an impeller and an axle 3, the housing 1 has an impeller wheel cavity 20, the impeller is composed of an impeller body 2, a central impeller piece 18, a large blade 4 and a small blade 4 ', the central impeller piece 18 divides the outer circumferential surface of the impeller body 2 into a front arc circumferential surface and a rear arc circumferential surface, the large blade 4 is composed of long and short blades which are arranged in groups at intervals, the large blade 4 is narrow at the top and wide at the bottom on the front arc circumferential surface, the small blade 4 ' is narrow at the bottom and wide at the rear arc circumferential surface, the top ends of the large blade 4 and the small blade 4 ' are swept back, that is, that the middle section is inclined in the direction opposite to the impeller rotation direction is in an S-shaped twisted and the central end is a three-dimensional flow structure with a swept wing angle and a forward rake shape, the wheel shaft 3 is arranged in the center of the wheel body 2, the wheel shaft 3 is provided with a bearing 11 and a sealing device 16, the impeller is arranged in an impeller wheel cavity 20 in the shell 1, the side surface of the wheel body 2 is provided with an annular concave-convex airtight ring 19, the wall of the wheel cavity 20 in the shell 1 corresponding to the airtight ring 19 is provided with a matched concave-convex airtight ring groove 17, the size of the impeller wheel cavity 20 is matched with the rotation shape of the impeller, the impeller and the wall of the inner cavity of the wheel cavity 20 keep a tiny airtight gap and keep sealing as much as possible but not contact with the wall of the inner cavity of the wheel cavity 20, the side surface of the wheel cavity 20 corresponding to the small blade 4 'in the shell 1 is provided with a large semi-annular auxiliary cavity 10, the air inlet 8 is arranged at the center of the side surface of the impeller wheel cavity 20 corresponding to the bottom of the large blade 4, the air outlet 9 of the large blade 4 is arranged on the outer circumference of the impeller wheel cavity 20 corresponding to the large blade 4, the air outlet 9 is communicated with the rear end of the large semi-annular auxiliary cavity 10 through a gradually expanding cavity 10', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc-shaped edge of the small blade 4' is matched with the arc-shaped degree of the wall of the corresponding large semi-circular cavity ring 23 and a tiny airtight gap is kept, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow top and a wide bottom, the C-shaped upper end of the C-shaped large semi-circular auxiliary cavity 10 is arranged on the circumferential surface of the wheel cavity 20 corresponding to the top end of the small blade 4 'and is communicated with the wheel cavity 20, the C-shaped lower end of the C-shaped large semi-circular auxiliary cavity 10 is arranged on the side surface of the wheel cavity 20 corresponding to the bottom of the small blade 4' and is communicated with the wheel cavity 20, the large semi-circular auxiliary cavity 10 is in a convergent shape forward along the rotation direction of the impeller from the rear end and is communicated with the wheel cavity, the exhaust port 9 'of the small blade 4' is arranged on the wheel cavity 20 at the empty position between the front end and the rear end of the large semi-circular auxiliary cavity 10, the exhaust port 9 'is in an involute shape and is communicated with the exhaust passage 13 through a gradually-releasing-shaped diffusion cavity 10', and the concave-convex airtight ring 19 on the impeller body 2 is mutually embedded with the concave-convex airtight ring groove 17 on the wall of the inner wheel cavity 20 of the shell 1 on the surface of the wheel cavity 20, so that a tiny airtight gap is kept.

The basic working principle is as follows: when the impeller works, the power device drives the impeller to rotate at a high speed by inputting power through the wheel shaft 3, air in the large blade cavity 7 on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves from the bottom of the large blade cavity 7, namely the circle center of the impeller at the side of the large blade 4, to the centrifugal end, namely the top end of the large blade 4 along the large blade 4 under the action of the centrifugal force, the pressure at the bottom of the large blade cavity 7 is reduced to generate negative pressure, the air in the atmosphere enters the bottom of the large blade cavity 7 through the air inlet 8 under the action of the atmospheric pressure, along with the high-speed rotation of the impeller, the air at the air inlet 8 is continuously sucked into the bottom of the large blade cavity 7 through the large blade cavity 7, the air in the bottom of the large blade cavity 7 is pushed by the large blade 4 to rotate along with the impeller to generate the centrifugal force, the energy and the speed of the air in the bottom of the large blade cavity 7 are rapidly increased, and the air subjected to the energy by the large blade 4 moves towards the excircle of the impeller under the action of the centrifugal force along the large blade 4 and moves at a high speed and moves on the large blade under the action of the large blade 4 4, the pressure is reduced and boosted by gathering at the top end, when the compressed air pressurized at the top end of the large blade 4 rotates to the exhaust port 9, the compressed air enters the gradually-releasing-shaped pressure-expanding cavity 10 ' through the exhaust port 9 to be reduced and boosted by speed, meanwhile, the air in the bottom of the small blade cavity 7 ' is pushed by the small blade 4 ' to generate centrifugal force along with the high-speed rotation of the impeller, the air moves to the top end of the small blade 4 ' along with the small blade 4 ' under the action of the centrifugal force, the air moving at high speed in the small blade cavity 7 ' rotates forwards along with the small blade 4 ' and is thrown away from the top end of the small blade 4 ' to enter the upper opening of the front large semi-circular C-shaped auxiliary cavity 10, negative pressure is generated at the bottom of the small blade cavity 7 ', the air in the lower opening of the C-shaped auxiliary cavity 10 corresponding to the bottom of the large semi-circular auxiliary cavity 10 ' is sucked into the small blade cavity 7 ' and rotates forwards along with the small blade cavity 7 ', and the compressed air after being reduced and boosted by speed again in the large semi-circular auxiliary cavity 10 ' generates negative pressure in the rear end of the large semi-circular auxiliary cavity 10 The compressed air sucked into the rear end of the large semi-circular auxiliary cavity 10 is sucked into the small blade cavity 7 'and is accelerated to be thrown away from the top end of the small blade 4' to enter the C-shaped upper port of the large semi-circular auxiliary cavity 10 along with the high-speed forward rotation of the small blade cavity 7 ', the compressed air in the C-shaped upper port of the large semi-circular auxiliary cavity 10 moves to the lower port of the C-shaped auxiliary cavity 10 along the wall of the C-shaped auxiliary cavity 10 around the cavity ring 23 and is decelerated and pressurized again, the compressed air in the lower port of the C-shaped auxiliary cavity 10 and is then swept into the small blade cavity 7' to do high-speed rotation motion along the small blade cavity 7 ', the compressed air enters the upper port of the C-shaped auxiliary cavity 10 at high speed again after being energized by the small blade 4' again, the compressed air in the upper port of the C-shaped auxiliary cavity 10 moves to the lower port of the C-shaped auxiliary cavity 10 along the wall of the C-shaped auxiliary cavity 10 around the cavity ring 23, the compressed air in the C-shaped auxiliary cavity 10 is pushed by the small blades 4 ' to make continuous spiral motion in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ' around the cavity ring 23, the energy is applied once by the small blades 4 ' when the compressed air enters the small blade cavity 7 ' once, the compressed air is continuously applied with energy for many times by the small blades 4 ' to form high-energy gas, and the high-energy gas enters the pressure expansion cavity 10 ' through the small blade exhaust port 9 ', is subjected to speed reduction and pressure increase again and then is exhausted through the exhaust port 13. It can be seen from the above description that the novel fluid supercharging device in this embodiment is characterized in that the centrifugal supercharging impeller and the vortex air compressing impeller in the prior art are integrated by the impeller, the overall length of the compression device is reduced, the rigidity of the wheel shaft is enhanced, the air inlet 8 is arranged on the center of the wheel cavity 20 corresponding to the bottom of the large blade 4, air can enter the bottom of each large blade cavity 7 at the same time, so that the air in the large blade cavity 7 is sufficient, the problem of insufficient air inlet of the vortex air compressing impeller in the prior art is solved, the C-shaped auxiliary cavity 10 has the functions of blocking, pressure expanding, storing, connecting and changing the operation track for the compressed air in operation, the compressed air enters the upper opening, i.e. the centrifugal end, of the C-shaped auxiliary cavity 10 at high speed and is blocked by the wall of the C-shaped auxiliary cavity 10 to be decelerated and pressurized, the pressurized compressed air is forced to move downwards and inwards along the wall of the C-shaped auxiliary cavity 10 around the cavity ring 23 with the cavity ring 23 as the axis, the compressed air entering the bottom of the C-shaped auxiliary cavity 10 is pushed into the bottom of the small blade cavity 7 'which then turns to, along with the high-speed rotation of the impeller, the compressed air is forced to do continuous high-speed rotation movement around the cavity ring 23 in a spiral shape in the small blade cavity 7' and the C-shaped auxiliary cavity 10 by taking the cavity ring 23 as an axis, and the compressed air can absorb the energy of the small blades 4 'for many times in the process of rotating along with the impeller at high speed, so that the exhaust port 9' can output the compressed air with higher pressure.

Fig. 5, 6, 7, and 8 collectively show a second embodiment of the novel fluid pressurizing device, and it can be seen from the drawings that the novel fluid pressurizing device shown in this embodiment is mainly composed of a housing 1, an impeller and an axle 3, an impeller wheel cavity 20 is formed in the housing 1, the impeller is composed of an impeller body 2, a central impeller piece 18, a large impeller piece 4 and a small impeller piece 4 ', the central impeller piece 18 divides the outer circumferential surface of the impeller body 2 into a front arc circumferential surface and a rear arc circumferential surface, the central impeller piece 18 is higher than the large impeller piece 4 and the small impeller piece 4 ', the higher part of the central impeller piece is in non-contact gap sealing coupling with a corresponding groove 17 on the inner wall of the impeller cavity 20, the large impeller piece 4 is formed by grouping long and short impeller pieces at intervals, the large impeller piece 4 is narrow at the top and wide at the bottom on the front arc circumferential surface, the small impeller piece 4 ' is narrow at the top and wide at the bottom arc circumferential surface, the top ends of the large blades 4 and the small blades 4 'are in a forward sweepness shape, namely the middle sections inclined along the rotation direction of the impeller are in a C-shaped twisted three-dimensional flow structure with the centripetal ends in a sweepback edge wing angle forward inclination shape, the wheel shaft 3 is arranged in the center of the wheel body 2, the wheel shaft 3 is provided with a bearing 11 and a sealing device 16, the impeller is arranged in an impeller cavity 20 in the shell 1, the side surface of the wheel body 2 is provided with an annular concave-convex airtight ring 19, the wall of the impeller cavity 20 in the shell 1 corresponding to the wheel cavity 20 and the airtight ring 19 is provided with a matched concave-convex airtight ring groove 17, the size of the impeller cavity 20 is matched with the rotation shape of the impeller, the wall of the inner cavity of the impeller cavity 20 keeps a tiny airtight gap and keeps sealed as much as possible without contacting with the wall of the inner cavity of the impeller cavity 20, the side surface of the wheel cavity 20 corresponding to the small blades 4' in the shell 1 is provided with a large semi-annular auxiliary cavity 10, and the air inlet 8 is arranged at the center of the side surface of the impeller cavity 20 corresponding to the bottom of the large blades 4, the exhaust port 9 of the large blade 4 is arranged on the outer circumference of an impeller wheel cavity 20 corresponding to the large blade 4, the exhaust port 9 is communicated with the rear end of a large semi-circular auxiliary cavity 10 through a gradually-releasing-shaped pressure expanding cavity 10 ', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc edge of the small blade 4 ' is matched with the arc degree of the wall of the corresponding large semi-circular cavity ring 23 and keeps a tiny airtight gap, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow top and a wide bottom, the large semi-circular auxiliary cavity 10 is in a convergent shape from the rear end forward along the rotation direction of the impeller, the exhaust port 9 ' of the small blade 4 ' is arranged on the wheel cavity 20 at the hollow position between the front end and the rear end of the large semi-circular auxiliary cavity 10, the exhaust port 9 ' is in a gradually-opening shape and is communicated with the exhaust channel 13 through the gradually-releasing-shaped pressure expanding cavity 10 ', a plurality of C-shaped spacers 5 with the same cross section as the C-shaped large semi-circular auxiliary cavity 10 are arranged between the large semi-circular cavity ring 23 in the C-shaped large semi-circular auxiliary cavity 10 and the shell 1, the C-shaped partition 5 divides a large semi-circular auxiliary cavity 10 into a plurality of sections of C-shaped auxiliary cavities 10, the sections of C-shaped auxiliary cavities 10 are not communicated, the C-shaped upper opening of the multi-section C-shaped auxiliary cavity 10 is spirally arranged on the circumferential surface of the wheel cavity 20 corresponding to the top end of the small blade 4' and is communicated with the wheel cavity 20, the spiral line 25 of the C-shaped upper opening of the C-shaped auxiliary cavity 10 section is tangent and opposite-rushed to an acute angle shape with the rotating direction of the small blade 4', namely the rotating direction 24 of the impeller, the C-shaped lower opening of the C-shaped auxiliary cavity 10 is arranged on the side surface of the wheel cavity 20 corresponding to the bottom of the small blade 4' and is communicated with the wheel cavity 20, the concave-convex airtight ring 19 on the impeller body 2 is mutually embedded with the concave-convex airtight ring groove 17 on the wall of the wheel cavity 20 in the shell 1 on the wheel cavity 20 surface, and a tiny airtight gap is kept.

The basic working principle is as follows: when the impeller works, the power device drives the impeller to rotate at a high speed by inputting power through the wheel shaft 3, air in the large blade cavity 7 on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves from the bottom of the large blade cavity 7, namely the circle center of the impeller at the side of the large blade 4, to the centrifugal end, namely the top end of the large blade 4 along the large blade 4 under the action of the centrifugal force, the pressure at the bottom of the large blade cavity 7 is reduced to generate negative pressure, the air in the atmosphere enters the bottom of the large blade cavity 7 through the air inlet 8 under the action of the atmospheric pressure, along with the high-speed rotation of the impeller, the air at the air inlet 8 is continuously sucked into the bottom of the large blade cavity 7 through the large blade cavity 7, the air in the bottom of the large blade cavity 7 is pushed by the large blade 4 to rotate along with the impeller to generate the centrifugal force, the energy and the speed of the air in the bottom of the large blade cavity 7 are rapidly increased, and the air subjected to the energy by the large blade 4 moves towards the excircle of the impeller under the action of the centrifugal force along the large blade 4 and moves at a high speed and moves on the large blade under the action of the large blade 4 4, the pressure is reduced at the top end, when the compressed air pressurized at the top end of the large blade 4 rotates to the exhaust port 9, the compressed air enters the gradually-releasing-shaped pressure expansion cavity 10 'through the exhaust port 9 to be subjected to pressure reduction and pressure increase, meanwhile, the air in the bottom of the small blade cavity 7' is pushed by the small blade 4 'to generate centrifugal force along with the high-speed rotation of the impeller, the air moves towards the top end of the small blade 4' along with the small blade 4 'under the action of the centrifugal force, the air moving at high speed in the small blade cavity 7' rotates forwards along with the small blade 4 'and is thrown away from the top end of the small blade 4' to enter the upper opening of the front C-shaped auxiliary cavity 10 section, negative pressure is generated at the bottom of the small blade cavity 7 ', the air in the lower opening of the C-shaped auxiliary cavity 10 section corresponding to the bottom of the small blade cavity 7' at the rear end of the large semi-circular auxiliary cavity 10 is sucked into the small blade cavity 7 'and rotates forwards along with the small blade cavity 7', and the compressed air pressurized by the large blade 4 'in the large semi-circular auxiliary cavity 10' is sucked into the negative pressure expansion cavity 10 In the rear end of the large semi-circular auxiliary cavity 10, similarly, the compressed air entering the rear end of the large semi-circular auxiliary cavity 10 is also sucked into the small blade cavity 7 'and is accelerated to be thrown away from the top end of the small blade 4' to enter the upper opening of the front C-shaped auxiliary cavity 10 section while the small blade cavity 7 'rotates forwards at a high speed, the compressed air in the upper opening of the C-shaped auxiliary cavity 10 section moves towards the lower opening of the C-shaped auxiliary cavity 10 section along the wall of the C-shaped auxiliary cavity 10 around the cavity ring 23 and is simultaneously subjected to speed reduction and pressurization, the compressed air subjected to speed reduction and pressurization in the lower opening of the C-shaped auxiliary cavity 10 section is further swept into the small blade cavity 7' to perform high-speed rotation movement along the small blade cavity 7 ', is subjected to energy application again by the small blade 4' and is then thrown into the upper opening of the front C-shaped auxiliary cavity 10 section again, the compressed air in the upper opening of the C-shaped auxiliary cavity 10 section moves towards the lower opening of the C-shaped auxiliary cavity 10 again along the wall of the C-shaped auxiliary cavity 10 around the ring 23, compressed air in the section of the C-shaped auxiliary cavity 10 is pushed by the small blades 4 ' to perform continuous spiral pressurization movement in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ' around the cavity ring 23, energy is applied once by the small blades 4 ' when the compressed air enters the small blade cavity 7 ' once, and the compressed air is continuously applied with energy for multiple times by the small blades 4 ' to form high-energy gas, and the high-energy gas is discharged into the pressure expansion cavity 10 ' through the small blade exhaust port 9 ', is subjected to speed reduction and pressure increase again, and is discharged through the exhaust port 13. It can be seen from the above description that the novel fluid supercharging device in this embodiment is characterized in that the central wheel 18 is higher than the large blade 4 and the small blade 4 ', the higher part of the central wheel is matched with the corresponding groove 17 and keeps a sealing gap, so as to reduce the problem of air cross-over between the large blade 4 and the small blade 4', namely between high pressure and low pressure, the C-shaped partition 5 having the same cross-section as the C-shaped cross-section of the large semi-circular auxiliary chamber 10 is added in the large semi-circular auxiliary chamber 10, the C-shaped partition 5 in the C-shaped auxiliary chamber 10 section has the functions of blocking and expanding compressed air during operation, the C-shaped auxiliary chamber 10 section also has the functions of storing, connecting and changing the running track of the compressed air, the compressed air entering the upper opening of the C-shaped auxiliary chamber 10 section at high speed is blocked by the C-shaped partition 5 to be forced to decelerate and boost, the compressed air after being forced to decelerate and boost is forced to move downwards and inwards along the wall of the C-shaped auxiliary chamber 10 with the chamber ring 23 as a surrounding chamber ring 23, the compressed air entering the bottom of the C-shaped auxiliary cavity 10 section is pushed into the bottom of the small blade cavity 7 'which is then rotated, along with the high-speed rotation of the impeller, the compressed air is forced to do continuous high-speed rotation motion around the cavity ring 23 in a spiral shape by taking the cavity ring 23 as an axis in the small blade cavity 7' and the C-shaped auxiliary cavity 10 section, the C-shaped partition 5 can enable the compressed air to do more spiral pressurization motion in the process of rotating with the impeller at high speed, the times of absorbing energy of the small blades 4 'by the compressed air are increased, and the compressed air with higher pressure can be output by the exhaust port 9'.

Fig. 9, 10, 2, and 3 collectively show a third embodiment of the novel fluid pressure increasing device, and it can be seen from the drawings that the novel fluid pressure increasing device shown in this embodiment is mainly composed of a housing 1, an impeller, an axle 3, a speed changing device 14, and a power device 6, wherein the housing 1 is internally provided with an impeller wheel cavity 20, the impeller is composed of an impeller body 2, a central impeller piece 18, a large blade 4, and a small blade 4 ', the central impeller piece 18 divides the outer circumferential surface of the impeller body 2 into a front arc-shaped circumferential surface and a rear arc-shaped circumferential surface, the large blade 4 is formed by grouping and matching long and short blades at intervals, the large blade 4 is narrow at the front arc-shaped circumferential surface and wide at the top, the small blade 4 ' is wide at the bottom arc-shaped circumferential surface, the top ends of the large blade 4 and the small blade 4 ' are swept, that is inclined in the opposite to the impeller rotation direction, and the middle section is in an S-shaped twisted and forward-shaped form a backward-swept wing flow structure with a forward-shaped tangential end, the power device 6 and the impeller are arranged on the same axial line and fixed on the shell 1 by bolts 22, the wheel shaft 3 is arranged on the center of the wheel body 2, one end of the wheel shaft 3 is connected with the power shaft 6 ' on the power device 6 by the speed change device 14, the speed change device 14 is provided with the speed change control mechanism 15, the wheel shaft 3 and the power shaft 6 ' are provided with the bearing 11 and the sealing device 16, the impeller is arranged in the impeller wheel cavity 20 in the shell 1, the side surface of the wheel body 2 is provided with the annular concave-convex airtight ring 19, the wall of the wheel cavity 20 in the shell 1 corresponding to the airtight ring 19 is provided with the matched concave-convex airtight ring groove 17, the size of the impeller wheel cavity 20 is matched with the rotary shape of the impeller, the impeller keeps a micro airtight gap with the inner cavity wall of the wheel cavity 20 and keeps the airtight gap as much as possible but does not contact with the inner cavity wall of the wheel cavity 20, the side surface of the wheel cavity 20 corresponding to the small blade 4 ' in the shell 1 is provided with the large semi-annular auxiliary cavity 10, the air inlet 8 is arranged at the center of the side face of the impeller cavity 20 corresponding to the bottom of the large blade 4, the air outlet 9 of the large blade 4 is arranged on the outer circumference of the impeller cavity 20 corresponding to the large blade 4, the air outlet 9 is communicated with the rear end of the large semi-circular auxiliary cavity 10 through the gradually-expanding expansion cavity 10 ', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc edge of the small blade 4 ' is matched with the arc degree of the wall of the corresponding large semi-circular cavity ring 23 and keeps a tiny airtight gap, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow top and a wide bottom, the C-shaped upper end of the C-shaped large semi-circular auxiliary cavity 10 is arranged on the circumferential face of the impeller cavity 20 corresponding to the top end of the small blade 4 ' and is communicated with the impeller cavity 20, the C-shaped lower end of the C-shaped large semi-circular auxiliary cavity 10 is arranged on the side face of the impeller cavity 20 corresponding to the bottom of the small blade 4 ' and is communicated with the impeller cavity 20, the large semi-circular auxiliary cavity 10 is in a convergent shape from the rear end to the front along the rotation direction of the impeller and is communicated with the impeller, the exhaust port 9 'of the small blade 4' is arranged on the impeller cavity 20 at the position of a neutral position between the front end and the rear end of the large semi-circular auxiliary cavity 10, the exhaust port 9 'is in an involute shape and is communicated with the exhaust passage 13 through the gradually-releasing-shaped expansion cavity 10', and the concave-convex airtight ring 19 on the impeller body 2 is mutually embedded with the concave-convex airtight ring groove 17 on the wall of the impeller cavity 20 in the shell body 1 of the impeller cavity 20 and keeps a micro airtight gap.

The basic working principle is as follows: when the impeller works, the power device 6 outputs power to the speed change device 14 through the power shaft 6', the speed change control structure 15 outputs power to the wheel shaft 3 according to a specified speed ratio after regulating the speed change device 14 according to a command requirement to drive the impeller to rotate according to a specified rotating speed, air in the cavity 7 of the large blade on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves from the bottom of the cavity 7 of the large blade, namely the circle center of the impeller on the side of the large blade 4, to the centrifugal end, namely the top end of the large blade 4 along the large blade 4 under the action of the centrifugal force, the pressure at the bottom of the cavity 7 of the large blade is reduced to generate negative pressure, air in the atmosphere enters the bottom of the cavity 7 of the large blade through the air inlet 8 under the action of atmospheric pressure, along with the high-speed rotation of the impeller, the air at the position of the air inlet 8 is continuously sucked into the bottom of the cavity 7 of the large blade by the cavity 7 of the large blade, the air in the bottom of the cavity 7 of the large blade is pushed by the large blade 4 to rotate along with the impeller to generate centrifugal force, the energy and the speed of the air in the bottom of the large blade cavity 7 rise rapidly, the air applied with energy by the large blade 4 moves to the excircle of the impeller at a high speed along the large blade 4 under the action of centrifugal force and gathers at the top end of the large blade 4 to reduce the speed and boost the pressure, when the compressed air pressurized at the top end of the large blade 4 rotates to the exhaust port 9, the compressed air enters the gradually-releasing type pressure-expanding cavity 10 ' through the exhaust port 9 to reduce the speed and boost the pressure, meanwhile, the air in the bottom of the small blade cavity 7 ' is pushed by the small blade 4 ' to generate centrifugal force along with the high-speed rotation of the impeller, the air moves to the top end of the small blade 4 ' along the small blade 4 ' under the action of the centrifugal force, the air moving at a high speed in the small blade cavity 7 ' rotates forwards along with the small blade 4 ' and is thrown away from the top end of the small blade 4 ' to enter the upper opening of the large half circular ring type C auxiliary cavity 10 in front, and negative pressure is generated at the bottom of the small blade cavity 7 ', the air in the lower opening of the C-shaped auxiliary cavity 10 corresponding to the bottom of the small blade cavity 7 'at the rear end of the large semi-circular auxiliary cavity 10 is sucked into the small blade cavity 7' and rotates forwards along with the small blade cavity 7 ', negative pressure is generated in the rear end of the large semi-circular auxiliary cavity 10 to suck the compressed air in the diffusion cavity 10' after speed reduction and pressure increase again into the rear end of the large semi-circular auxiliary cavity 10, similarly, the compressed air entering the rear end of the large semi-circular auxiliary cavity 10 is sucked into the small blade cavity 7 'and accelerated to be thrown away from the top end of the small blade 4' to enter the C-shaped upper opening of the large semi-circular auxiliary cavity 10 along the cavity wall of the C-shaped auxiliary cavity 10 surrounding the cavity ring 23 to the lower opening of the C-shaped auxiliary cavity 10 and is subjected to speed reduction and pressure increase again, and the compressed air in the lower opening of the C-shaped auxiliary cavity 10 after speed reduction and pressure increase again is swept into the small blade cavity 7 'again' The inner part rotates at a high speed along with the small blade cavity 7 ', the compressed air in the upper opening of the C-shaped auxiliary cavity 10 enters the upper opening of the C-shaped auxiliary cavity 10 at a high speed after being applied with energy by the small blade 4 ' again, the compressed air in the upper opening of the C-shaped auxiliary cavity 10 moves towards the lower opening of the C-shaped auxiliary cavity 10 along the wall of the C-shaped auxiliary cavity 10 around the cavity ring 23 again, the compressed air in the C-shaped auxiliary cavity 10 is pushed by the small blade 4 ' to rotate around the cavity ring 23 in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ' continuously and spirally, the energy is applied by the small blade 4 ' once when the compressed air enters the small blade cavity 7 ', the compressed air forms high-energy gas after being continuously applied with energy by the small blade 4 ' for multiple times, and finally the high-energy gas enters the pressure expansion cavity 10 ' through the small blade exhaust port 9 ' to be discharged through the exhaust port 13 after being decelerated and boosted again. It can be seen from the above description that the novel fluid pressure boosting device in this embodiment is characterized in that the shaft power output by the power device 6 is changed in speed by the speed changing device 14 according to a designated speed ratio and then drives the impeller to rotate, the speed changing device 14 can be controlled by the speed changing control mechanism 15 during operation, the rotation speed of the impeller can be adjusted according to the operation requirement, the device can better adapt to the operation with large load change, the device can output compressed gas with relatively stable pressure under different operation conditions, other advantages are the same as those of the first embodiment, and the description is omitted herein for the sake of saving space.

Fig. 11, 12, 6, and 7 collectively show a fourth embodiment of the novel fluid pressure increasing device, and it can be seen from the drawings that the novel fluid pressure increasing device shown in this embodiment is mainly composed of a housing 1, an impeller, an axle 3, and a power device 6, an impeller wheel cavity 20 is formed in the housing 1, the impeller is composed of an impeller body 2, a central impeller piece 18, a large blade 4, and a small blade 4 ', the central impeller piece 18 divides an outer circumferential surface of the impeller body 2 into a front arc-shaped circumferential surface and a rear arc-shaped circumferential surface, the large blade 4 is formed by grouping and matching long and short blades at intervals, the large blade 4 is narrow in the upper part and wide in the lower part on the front arc-shaped circumferential surface, the small blade 4 ' is narrow in the upper part and wide in the lower part on the rear arc-shaped circumferential surface, the top ends of the large blade 4 and the small blade 4 ' are in a forward-swept structure, that is inclined along the rotation direction of the impeller, that the middle section is C-shaped twisted, and the centripetal end is a forward-swept-shaped wing angle with a backward-swept edge, the power device 6 and the impeller are arranged on the same axis and fixed on the shell 1 by bolts 22, the power device 6 is arranged at one end of the wheel shaft 3, the impeller is arranged at the other end of the wheel shaft 3, the bearings 11 are arranged at two ends of the wheel shaft 3, the impeller is arranged in an impeller cavity 20 in the shell 1, the side surface of the wheel body 2 is provided with an annular concave-convex airtight ring 19, the wall of the impeller cavity 20 in the shell 1 corresponding to the impeller cavity 20 and the airtight ring 19 is provided with a matched concave-convex airtight ring groove 17, the size of the impeller cavity 20 is matched with the rotation shape of the impeller, the wall of the impeller cavity 20 in the impeller cavity 20 keeps a tiny airtight gap and keeps sealed as much as possible but is not contacted with the wall of the impeller cavity 20, the side surface of the impeller cavity 20 corresponding to the small blade 4' in the shell 1 is provided with a large semi-circular auxiliary cavity 10, and the air inlet 8 is arranged at the center of the side surface of the impeller cavity 20 corresponding to the bottom of the large blade 4, a bearing fixing grid 6 ' is arranged in an air inlet 8 at the center of the side face of the impeller wheel cavity 20, a bearing 11 is arranged at the center of the bearing fixing grid 6 ', an exhaust port 9 of the large blade 4 is arranged on the outer circumference of the impeller wheel cavity 20 corresponding to the large blade 4, the exhaust port 9 is communicated with the rear end of the large semi-circular auxiliary cavity 10 through a gradually-expanding expansion cavity 10 ', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc edge of the small blade 4 ' is matched with the radian of the wall of the corresponding large semi-circular cavity ring 23 and keeps a tiny airtight gap, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow upper part and a wide part, the large semi-circular auxiliary cavity 10 is forward convergent along the rotation direction of the impeller from the rear end, and the exhaust port 9 ' of the small blade 4 ' is arranged in front of the large semi-circular auxiliary cavity 10, On a wheel cavity 20 at a neutral position between the rear ends, the exhaust port 9 ' is in an involute shape and is communicated with an exhaust passage 13 through a gradually-releasing-shaped diffusion cavity 10 ', a plurality of C-shaped spacers 5 with the same cross section as that of the C-shaped large semi-circular auxiliary cavity 10 are arranged between a large semi-circular annular cavity ring 23 in the C-shaped large semi-circular auxiliary cavity 10 and the shell 1, the C-shaped spacers 5 divide the large semi-circular annular auxiliary cavity 10 into a plurality of sections of C-shaped auxiliary cavities 10 which are not communicated with each other, the C-shaped upper openings of the plurality of sections of C-shaped auxiliary cavities 10 are in a spiral shape and are communicated with the wheel cavity 20 on the circumferential surface corresponding to the top end of the small blade 4 ' and are communicated with the wheel cavity 20, a spiral line 25 of the C-shaped upper openings of the sections of the C-shaped auxiliary cavities 10 is in a tangent opposite-punching acute angle shape with the rotating direction of the small blade 4 ', namely the rotating direction 24 of the impeller, and the C-shaped lower openings of the C-shaped auxiliary cavities 10 are positioned on the side surface of the wheel cavity 20 corresponding to the bottom of the small blade 4 ' and are communicated with the wheel cavity 20, the concave-convex airtight ring 19 on the impeller body 2 is mutually embedded with the concave-convex airtight ring groove 17 on the wall of the wheel cavity 20 in the shell 1 on the wheel cavity 20 surface, and a tiny airtight gap is kept.

The basic working principle is as follows: when the impeller works, the power device 6 inputs power through the wheel shaft 3 to drive the impeller to rotate at a high speed, air in the large blade cavity 7 on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves from the bottom of the large blade cavity 7, namely the circle center of the impeller at the side of the large blade 4, to the centrifugal end, namely the top end of the large blade 4 along the large blade 4 under the action of the centrifugal force, the pressure at the bottom of the large blade cavity 7 is reduced to generate negative pressure, the air in the atmosphere enters the air inlet 8 through the bearing fixing grid 6' under the action of the atmospheric pressure, the air at the air inlet 8 is continuously sucked into the bottom of the large blade cavity 7 through the large blade cavity 7 along with the high-speed rotation of the impeller, the air in the bottom of the large blade cavity 7 is pushed by the large blade 4 to rotate along with the impeller to generate the centrifugal force, the energy and the speed of the air in the bottom of the large blade cavity 7 are rapidly increased, and the air after the energy is applied by the large blade 4 moves towards the excircle of the impeller along with the large blade 4 under the action of the centrifugal force and moves on the large blade 4 The top end gathers, the speed is reduced and the pressure is increased, when the compressed air after the top end of the large blade 4 is pressurized rotates to the exhaust port 9, the compressed air enters the gradually-releasing-shaped pressure expansion cavity 10 ' through the exhaust port 9 to be subjected to speed reduction and pressure increase, meanwhile, the air in the bottom of the small blade cavity 7 ' is pushed by the small blade 4 ' to generate centrifugal force along with the high-speed rotation of the impeller, the air moves towards the top end of the small blade 4 ' along with the small blade 4 ' under the action of the centrifugal force, the air moving at high speed in the small blade cavity 7 ' rotates forwards along with the small blade 4 ' and is thrown away from the top end of the small blade 4 ' to enter the upper opening of the front C-shaped auxiliary cavity 10 section, the bottom of the small blade cavity 7 ' generates negative pressure, the air in the lower opening of the C-shaped auxiliary cavity 10 section corresponding to the bottom of the small blade cavity 7 ' at the rear end of the large semi-circular auxiliary cavity 10 ' is sucked into the small blade cavity 7 ' and rotates forwards along with the small blade cavity 7 ', and the compressed air after the pressure in the large semi-circular auxiliary cavity 10 ' is sucked into the large blade 4 to be subjected to pressure expansion cavity 10 ' after being pressurized through the negative pressure In the rear end of the semicircular auxiliary cavity 10, similarly, the compressed air entering the rear end of the large semicircular auxiliary cavity 10 is also sucked into the small blade cavity 7 'and is accelerated to be thrown away from the top end of the small blade 4' to enter the upper opening of the front C-shaped auxiliary cavity 10 section while the small blade cavity 7 'rotates forwards at a high speed, the compressed air in the upper opening of the C-shaped auxiliary cavity 10 section moves to the lower opening of the C-shaped auxiliary cavity 10 section along the cavity wall of the C-shaped auxiliary cavity 10 surrounding the cavity ring 23 and is simultaneously subjected to speed reduction and pressurization, the compressed air in the lower opening of the C-shaped auxiliary cavity 10 section is again swept into the small blade cavity 7' to perform high-speed rotation movement along the small blade cavity 7 'after being subjected to energy application by the small blade 4' again and then is thrown into the upper opening of the front C-shaped auxiliary cavity 10 section again, the compressed air in the upper opening of the C-shaped auxiliary cavity 10 section moves to the lower opening of the C-shaped auxiliary cavity 10 again along the wall surrounding the ring 23 of the C-shaped auxiliary cavity 10, compressed air in the section of the C-shaped auxiliary cavity 10 is pushed by the small blades 4 ' to perform continuous spiral pressurization movement in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ' around the cavity ring 23, energy is applied once by the small blades 4 ' when the compressed air enters the small blade cavity 7 ' once, and the compressed air is continuously applied with energy for multiple times by the small blades 4 ' to form high-energy gas, and the high-energy gas is discharged into the pressure expansion cavity 10 ' through the small blade exhaust port 9 ', is subjected to speed reduction and pressure increase again, and is discharged through the exhaust port 13. It can be seen from the above description that the novel fluid supercharging device in this embodiment is characterized in that the power device and the impeller are mounted on the same wheel shaft 3, the bearings 11 are mounted at both ends of the wheel shaft 3 in a bridge structure, the bearing 11 at the impeller end is mounted and fixed at the center of the fixed grille 6 'in the air inlet 8, during operation, air with lower external temperature firstly enters the air inlet 8 after passing through the fixed grille 6' of the bearing 11, the air with lower temperature takes away most of heat on the fixed grille 6 ', the temperature of the fixed grille 6 is reduced, and the temperature of the bearing 11 mounted in the center of the fixed grille 6' is also reduced, so that the bearing 11 can work in a proper temperature range for a long time, the service life of the whole machine is prolonged, other advantages are the same as those of the second embodiment, and will not be described herein for saving space.

Fig. 13, 14, 15, and 16 collectively show a fifth embodiment of the novel fluid pressurizing device, and it can be seen from the drawings that the novel fluid pressurizing device shown in this embodiment mainly comprises a housing 1, an impeller, an axle 3, a power device 6, and a pressurizing impeller, an impeller wheel cavity 20 and a pressurizing impeller wheel cavity are respectively formed in the housing 1, the impeller is composed of an impeller body 2, a central wheel piece 18, a large blade 4, a large blade wheel piece 18 ', a small blade 4', and a small blade wheel piece 18 ″, the central wheel piece 18 divides the outer circumferential surface of the impeller body 2 into a front arc circumferential surface and a rear arc circumferential surface, the large blade 4 is composed of long blades and short blades which are arranged in groups at intervals, the large blade 4 is narrow at the upper part on the front arc circumferential surface and wide at the lower part, the outer side edge of the large blade wheel piece 18 'is blocked, the small blade 4' is narrow at the upper part on the rear arc circumferential surface and wide at the lower part, the outer side edge of the impeller is sealed by a small blade wheel piece 18 ', the top ends of the large blade 4 and the small blade 4' are in a sweepback shape, namely the middle section inclined along the rotation direction of the impeller is in an S-shaped twisted centripetal end and is in a forward sweepback edge wing angle side-leaning three-dimensional flow structure, the booster impeller, the power device 6 and the impeller are arranged on the same wheel shaft in the shell 1, the power device 6 is arranged and fixed at the middle section of the wheel shaft 3 in an air passage between the booster impeller and the impeller through a fixed grid, the impeller is arranged at the other end of the wheel shaft 3, the bearing 11 is arranged on the wheel shaft 3 at the two ends of the impeller and the power device, the impeller is arranged in an impeller wheel cavity 20 in the shell 1, the side surface of the impeller 2 is provided with an annular concave-convex airtight ring 19, the wall of the wheel cavity 20 in the shell 1 corresponding to the impeller cavity 20 and the impeller airtight ring 19 is provided with a convex-concave airtight ring groove 17, and concave-convex airtight ring grooves 17 are matched with the size, and the impeller cavity 20 is matched with the rotary shape, the impeller is in small airtight clearance with the inner cavity wall of the wheel cavity 20 and is sealed as much as possible but is not in contact with the inner cavity wall of the wheel cavity 20, the side surface of the wheel cavity 20 corresponding to the small blade 4 ' in the shell 1 is provided with a large semi-circular auxiliary cavity 10, the air inlet 8 is arranged at the center of the side surface of the impeller cavity 20 corresponding to the bottom of the large blade 4, the center of the side surface of the impeller cavity 20 is communicated with the air passage of the air inlet 8 and is internally provided with a fixed grid 6 ', the fixed grid 6 ' is internally provided with a power device 6 and a bearing 11, the air inlet 8 ' of the booster impeller is arranged at the foremost end of the shell 1, the air inlet 8 ' of the booster impeller is communicated with the air inlet 8 at the heel of the fixed grid 6 ' through the booster impeller, the air outlet 9 of the large blade 4 is arranged on the outer circumference of the impeller cavity 20 corresponding to the large blade 4, and the air outlet 9 is communicated with the rear end of the large semi-circular auxiliary cavity 10 through a gradually-opened type pressure expanding cavity 10 ', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc-shaped edge of the small blade 4' is matched with the arc-shaped degree of the wall of the corresponding large semi-circular cavity ring 23 and a tiny airtight gap is kept, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow top and a wide bottom, the large semi-circular auxiliary cavity 10 is in a convergent shape from the rear end forward along the rotation direction of the impeller, the small blade 4 'air exhaust port 9' is arranged on a wheel cavity 20 at a gap between the front end and the rear end of the large semi-circular auxiliary cavity 10, the air exhaust port 9 'is in an involute shape and is communicated with an air exhaust channel 13 through a gradually-releasing-shaped diffusion cavity 10', a plurality of C-shaped spacers 5 which are the same as the cross section of the C-shaped large semi-circular auxiliary cavity 10 are arranged between the large semi-circular cavity ring 23 in the C-circular auxiliary cavity 10 and the shell 1, the C-shaped spacer 5 divides a large semi-circular auxiliary cavity 10 into a multi-section C-shaped auxiliary cavity 10, the multi-section C-shaped auxiliary cavity 10 is not communicated, a C-shaped upper opening of the multi-section C-shaped auxiliary cavity 10 is in a spiral shape and is communicated with a wheel cavity 20 on a wheel cavity 20 circumferential surface corresponding to the top end of a small blade 4 ', a spiral line 25 of the C-shaped upper opening of the C-shaped auxiliary cavity 10 is in a tangent opposite-punching acute angle shape along the rotating direction of the small blade 4 ', namely the rotating direction 24 of an impeller, a C-shaped lower opening of the C-shaped auxiliary cavity 10 is communicated with the wheel cavity 20 on the side surface corresponding to the bottom of the small blade 4 ' and is communicated with the wheel cavity 20, and a concave-convex air-tight ring 19 on the impeller 2 is mutually embedded with a concave-convex air-tight ring groove 17 on the wheel cavity 20 wall in the wheel cavity 20 shell 1 and keeps a micro air-tight gap.

The basic working principle is as follows: when the impeller works, the power device 6 drives the booster impeller and the main impeller to rotate at a high speed through the output power of the wheel shaft 3, the booster blades 4 'on the booster impeller rotate at a high speed to stir the air at the air inlet 8' of the booster impeller to form pre-compressed air in the air passage between the power device 6 and the shell 1, the pre-compressed air in the air passage enters the air inlet 8 through the fixed grids on the power device 6, meanwhile, the air in the large blade cavity 7 on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves from the bottom of the large blade cavity 7, namely the circle center of the impeller at the side of the large blade 4, to the centrifugal end, namely the top end of the large blade 4 along the view of the large blade 4 under the action of the centrifugal force, the pressure at the bottom of the large blade cavity 7 is reduced to generate negative pressure, the pre-compressed air at the air inlet 8 is continuously swept into the bottom of the large blade cavity 7 by the side inclination angle of the large blade 4, and simultaneously, a vortex is formed behind the side inclination angle of the large blade 4, the pre-compressed air in the bottom of the large blade cavity 7 is pushed by the large blade 4 to rotate along with the impeller to generate centrifugal force, the energy and the speed of the pre-compressed air in the bottom of the large blade cavity 7 rapidly rise, the pre-compressed air after the energy is applied by the large blade 4 moves towards the excircle of the impeller at high speed under the action of the centrifugal force and gathers at the top end of the large blade 4 to reduce the speed and increase the pressure, the compressed air is formed after the top end of the large blade 4 is pressurized, because the side surface of the large blade 4 is blocked by the large blade wheel 18 ', the compressed air in the large blade cavity 7 is not contacted with the wall of the wheel cavity 20, the compressed air can only be discharged into the gradually-releasing type pressure expansion cavity 10 ' through the exhaust port 9 when the compressed air rotates to the exhaust port 9 along with the large blade cavity 7 and is decelerated and increased the pressure in the pressure expansion cavity 10 ' again, and meanwhile, the air in the bottom of the small blade cavity 7 ' generates the centrifugal force along with the high-speed rotation of the impeller under the push of the small blade 4 ', the air moving at high speed in the cavity 7 ' of the small blade rotates forwards along with the small blade 4 ' and is thrown away from the top end of the small blade 4 ' to enter the upper opening of the front section of the C-shaped auxiliary cavity 10, negative pressure is generated at the bottom of the cavity 7 ' of the small blade, the air in the lower opening of the section of the C-shaped auxiliary cavity 10 corresponding to the bottom of the cavity 7 ' of the small blade at the rear end of the large semi-circular auxiliary cavity 10 is sucked into the cavity 7 ' of the small blade and rotates forwards along with the cavity 7 ' of the small blade, negative pressure is generated in the rear end of the large semi-circular auxiliary cavity 10 to suck the compressed air in the pressure expansion cavity 10 ' which is boosted by the large blade 4 into the rear end of the large semi-circular auxiliary cavity 10, and similarly, the compressed air entering the rear end of the large semi-circular auxiliary cavity 10 is also sucked into the cavity 7 ' of the small blade and is accelerated to be thrown away from the top end of the auxiliary cavity 4 ' of the small blade 4 to enter the upper opening of the section of the front section of the C-shaped auxiliary cavity 10 while rotating forwards at high speed along with the cavity 7 ' of the small blade, compressed air in the upper opening of the section of the C-shaped auxiliary cavity 10 moves towards the lower opening of the section of the C-shaped auxiliary cavity 10 along the wall of the section of the C-shaped auxiliary cavity 10 around the cavity ring 23 and is subjected to speed reduction and pressurization simultaneously, the compressed air subjected to speed reduction and pressurization again in the lower opening of the section of the C-shaped auxiliary cavity 10 is swept into the small blade cavity 7 'again by the small blade 4' and is subjected to high-speed rotating motion along the small blade cavity 7 ', the compressed air subjected to energy application by the small blade 4' is then thrown into the upper opening of the section of the C-shaped auxiliary cavity 10 again, the compressed air in the upper opening of the section of the C-shaped auxiliary cavity 10 is subjected to continuous spiral pressurization motion in the C-shaped auxiliary cavity 10 and the small blade cavity 7 'again along the wall of the C-shaped auxiliary cavity 10 around the cavity ring 23, the compressed air in the section of the C-shaped auxiliary cavity 10 is pushed by the small blade 4' to perform continuous spiral pressurization motion, and energy application is performed by the small blade 4 'once when the compressed air enters the small blade cavity 7', the compressed air is continuously applied with energy for multiple times by the small blades 4 'to form high-energy gas, the side surfaces of the small blades 4' are also blocked by the small blade wheel pieces 18 ', the high-energy gas in the small blade cavities 7' is not contacted with the wall of the wheel cavity 20, the high-energy gas can only rotate to the exhaust port 9 'along with the small blade cavities 7', is exhausted into the gradually-releasing type diffusion cavity 10 'through the exhaust port 9', is subjected to speed reduction and pressure rise again in the diffusion cavity 10 ', and the high-energy gas subjected to speed reduction and pressure rise again in the diffusion cavity 10' is exhausted through the exhaust port 13. It can be seen from the above description that the novel fluid supercharging device in the present embodiment is characterized in that the power device is installed on the same wheel shaft 3 together with the supercharging impeller and the main impeller, the bearings 11 are installed on the wheel shafts 3 at both ends of the power device 6 and the main impeller, the power device 6 is installed in the air passage between the supercharging impeller and the main impeller through the fixed grille 6 ', the pre-compressed air with relatively low temperature from the supercharging impeller enters the air inlet 8 through the fixed grille 6' during operation, the air with lower temperature takes away most of the heat on the fixed grille, the temperature of the fixed grille is reduced, the temperatures of the bearings 11 and the power device 6 installed in the center of the fixed grille are also reduced, the bearings 11 and the power device 6 can operate in a proper temperature range for a long time, and the service lives of the power device 6 and the bearings 11 are relatively prolonged, because the outer side surfaces of the large blade 4 and the small blade 4 'are respectively blocked by the large blade 4 and the small blade wheel 18 ", the compressed air in the large blade cavity 7 and the small blade cavity 7' is not contacted with the wall of the wheel cavity 20, the side leakage of the compressed air is effectively reduced, the air compression efficiency is further improved, other advantages are the same as the fourth embodiment, and the description is omitted for saving space.

Fig. 17, 18, 14, and 15 collectively show a sixth embodiment of the novel fluid pressurizing device, and it can be seen from the drawings that the novel fluid pressurizing device shown in this embodiment mainly comprises a housing 1, an impeller, an axle 3, a speed changing device 14, a power device 6, a pressurizing impeller, and a pressurizing impeller shaft 3 ', an impeller wheel cavity 20 and a pressurizing impeller wheel cavity are respectively arranged in the housing 1, the impeller comprises an impeller body 2, a central wheel blade 18, a large blade 4, a large blade wheel blade 18 ', a small blade wheel blade 4 ', and a small blade wheel blade 18 ″, the central wheel blade 18 divides the outer circumferential surface of the impeller body 2 into a front arc-shaped circumferential surface and a rear arc-shaped circumferential surface, the large blade 4 is formed by grouping long and short blades at intervals, the large blade 4 is narrow at the top and wide at the bottom on the front arc-shaped circumferential surface, the outer side edge of the large blade wheel blade 18 ' is blocked, the small blade 4 ' is narrow at the top and wide at the bottom on the rear arc-shaped circumferential surface, the outer side edge of the big blade 4 and the small blade 4 ' is blocked by a small blade wheel 18 ', the top ends of the big blade 4 and the small blade 4 ' are sweepback, namely the middle section inclined along the rotation direction of the blade is S-shaped twisted, the centripetal end is a three-dimensional flow structure with sweepforward edge wing angle side, the supercharging impeller shaft 3 ', the power device 6 and the speed change device 14 are arranged on the same axial line in the shell 1 with the impeller and the wheel shaft 3, the power device 6 is arranged and fixed on the middle section of the supercharging impeller shaft 3 ' through a fixed grid, the supercharging impeller is arranged at one end of the supercharging impeller shaft 3 ', the other end of the supercharging impeller shaft 3 ' is connected with the speed change device 14, the other end of the speed change device 14 is connected with the wheel shaft 3, the speed change device 14 is provided with a speed change control mechanism 15, the speed change device 14 and the speed change control mechanism 15 are fixed in an air duct between the supercharging impeller and the main impeller through the fixed grid, the wheel shaft 3 is arranged in the center of the impeller, the bearing 11 and the sealing device 16 are arranged on the pressurizing impeller shaft 3 'and the wheel shaft 3, the impeller is arranged in an impeller cavity 20 in the shell 1, the side surface of the wheel body 2 is provided with an annular concave-convex airtight ring 19, the wall of the impeller cavity 20 in the shell 1 corresponding to the airtight ring 19 is provided with a matched concave-convex airtight ring groove 17, the size of the impeller cavity 20 is matched with the rotation shape of the impeller, the wall of the inner cavity of the impeller cavity 20 keeps a small airtight gap, the sealing is kept as much as possible but is not contacted with the wall of the inner cavity of the impeller cavity 20, the side surface of the impeller cavity 20 corresponding to the small blade 4' in the shell 1 is provided with a large semi-annular auxiliary cavity 10, the air inlet 8 is arranged at the center of the side surface of the impeller cavity 20 corresponding to the bottom of the large blade 4, the pressurizing impeller air inlet 8 'is arranged at the foremost end of the shell 1, and the pressurizing impeller air inlet 8' passes through the pressurizing impeller, The power device 6 is communicated with a fixed grid 6 'on the outer circumference of a speed change device 14 by a heel air inlet 8, an air outlet 9 of a large blade 4 is arranged on the outer circumference of an impeller wheel cavity 20 corresponding to the large blade 4, the air outlet 9 is communicated with the rear end of a large semi-circular auxiliary cavity 10 by a gradually-expanding expansion cavity 10', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc edge of the small blade 4' is matched with the radian of the wall of the corresponding large semi-circular cavity ring 23 and keeps a tiny airtight gap, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be C-shaped with narrow top and wide bottom, the large semi-circular auxiliary cavity 10 is converged forwards along the rotation direction of the impeller from the rear end, the air outlet 9 'of the small blade 4' is arranged on the wheel cavity 20 at the empty position between the front end and the rear end of the large semi-circular auxiliary cavity ring 10, the exhaust port 9 ' is in an involute shape and is communicated with the exhaust channel 13 through a gradually-releasing expansion cavity 10 ', a plurality of C-shaped spacers 5 with the same cross section as that of the C-shaped large semi-circular auxiliary cavity 10 are arranged between a large semi-circular auxiliary cavity ring 23 in the C-shaped large semi-circular auxiliary cavity 10 and the shell 1, the large semi-circular auxiliary cavity 10 is divided into a plurality of sections of C-shaped auxiliary cavities 10 by the C-shaped spacers 5, the sections of C-shaped auxiliary cavities 10 are not communicated, C-shaped upper openings of the sections of C-shaped auxiliary cavities 10 are spirally arranged on the circumferential surface of the wheel cavity 20 corresponding to the top end of the small blade 4 ' and are communicated with the wheel cavity 20, a spiral line 25 of the C-shaped upper opening of the C-shaped auxiliary cavity 10 section is in a tangent opposite-punching acute angle shape with the rotating direction of the small blade 4 ', namely the rotating direction 24 of the impeller, C-shaped lower opening of the C-shaped auxiliary cavity 10 is arranged on the side surface of the wheel cavity 20 corresponding to the bottom of the small blade 4 ' and is communicated with the wheel cavity 20, the concave-convex airtight ring 19 on the surface of the wheel body 20 in the wheel cavity 20 in the wheel body 1, and the concave-convex surface of the wheel cavity 20 on the impeller 2 The annular airtight ring grooves 17 are fitted to each other to maintain a minute airtight gap.

The basic working principle is as follows: when the device works, the power device 6 drives the booster impeller and the speed change device 14 through the output shaft power of the booster impeller wheel shaft 3 ', the air at the position of the booster blade 4 ' on the booster impeller rotates at high speed to excite the air inlet 8 ' of the booster impeller to enter the air duct between the power device 6 and the shell 1 to form pre-compressed air, the pre-compressed air in the air duct enters the air inlet 8 after passing through the fixed grids on the power device 6, the speed change device 14 and the speed change control mechanism 15, simultaneously, the speed change control mechanism 15 regulates and controls the speed change device 14 according to the instruction requirement and outputs power to the wheel shaft 3 according to the appointed speed change ratio to drive the impeller to rotate according to the appointed rotating speed, the air in the large blade cavity 7 on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves to the centrifugal end, namely the top end of the large blade 4, along the large blade cavity 7 under the action of the centrifugal force, the pressure at the bottom of the large blade cavity 7 is reduced to generate negative pressure, the pre-compressed air at the air inlet 8 is continuously swept into the bottom of the large blade cavity 7 by the side inclination angle of the large blade 4, meanwhile, a vortex is formed behind the side inclination angle of the large blade 4, the pre-compressed air in the bottom of the large blade cavity 7 is pushed by the large blade 4 to rotate along with the impeller to generate centrifugal force, the energy and the speed of the pre-compressed air in the bottom of the large blade cavity 7 are rapidly increased, the pre-compressed air after being applied with energy by the large blade 4 moves to the excircle of the impeller along the large blade 4 at high speed under the action of the centrifugal force and is accumulated at the top end of the large blade 4 to be reduced and increased in speed, the compressed air is formed after the top end of the large blade 4 is increased in pressure, because the side surface of the large blade 4 is blocked by the large blade wheel 18 ', the compressed air in the large blade cavity 7 is not contacted with the wall of the wheel cavity 20, and the compressed air can only rotate to the exhaust port 9 along with the large blade cavity 7 and is discharged into the gradually-shaped expansion cavity 10' again through the exhaust port 9 The air in the bottom of the small blade cavity 7 ' is pushed by the small blade 4 ' to generate centrifugal force along with the high-speed rotation of the impeller, the air moves to the top end of the small blade 4 ' along the small blade 4 ' under the action of the centrifugal force, the air moving at high speed in the small blade cavity 7 ' rotates forwards along with the small blade 4 ' and is thrown away from the top end of the small blade 4 ' to enter the upper opening of the front C-shaped auxiliary cavity 10 section, negative pressure is generated at the bottom of the small blade cavity 7 ', the air in the lower opening of the C-shaped auxiliary cavity 10 section corresponding to the bottom of the small blade cavity 7 ' at the rear end of the large semi-circular auxiliary cavity 10 is sucked into the small blade cavity 7 ' and rotates forwards along with the small blade cavity 7 ', the negative pressure generated in the rear end of the large semi-circular auxiliary cavity 10 sucks the compressed air in the diffusion cavity 10 ' boosted by the large blade 4 into the rear end of the large semi-circular auxiliary cavity 10, and the compressed air entering the rear end of the large semi-circular auxiliary cavity 10 is also sucked into the small blade cavity 7 ' and along with the high blade 4 The small blade cavity 7 'rotates forwards at a high speed and is simultaneously thrown away from the top end of the small blade 4' in an accelerating manner to enter the upper opening of the front C-shaped auxiliary cavity 10 section, compressed air in the upper opening of the C-shaped auxiliary cavity 10 section moves towards the lower opening of the C-shaped auxiliary cavity 10 section around the cavity ring 23 along the wall of the C-shaped auxiliary cavity 10 and is pressurized at a reduced speed at the same time, the compressed air which is pressurized at a reduced speed again in the lower opening of the C-shaped auxiliary cavity 10 section is swept into the small blade cavity 7 'again by the small blade 4' and is rotated at a high speed along the small blade cavity 7 ', the compressed air which is energized by the small blade 4' is thrown into the upper opening of the front C-shaped auxiliary cavity 10 section again, the compressed air in the upper opening of the C-shaped auxiliary cavity 10 section moves towards the lower opening of the C-shaped auxiliary cavity 10 around the cavity ring 23 along the wall of the C-shaped auxiliary cavity 10 again, and the compressed air in the C-shaped auxiliary cavity 10 section is pushed by the small blade 4 'to make continuous spiral pressurization around the auxiliary cavity 10 and the small blade cavity 7', the compressed air is applied with energy once by the small blade 4 'every time when entering the small blade cavity 7', the compressed air is continuously applied with energy for many times by the small blade 4 'to form high-energy gas, because the side surface of the small blade 4' is also blocked by the small blade wheel 18 ", the high-energy gas in the small blade cavity 7 'is not contacted with the wall of the wheel cavity 20, the high-energy gas can only be discharged into the gradually-releasing type pressure expansion cavity 10" through the gas outlet 9' when rotating to the gas outlet 9 'along with the small blade cavity 7', and is subjected to speed reduction and pressure increase again in the pressure expansion cavity 10 ", and the high-energy gas subjected to speed reduction and pressure increase again in the pressure expansion cavity 10" is discharged through the gas outlet 13. It can be seen from the above description that the novel fluid supercharging device in this embodiment is characterized in that the power device 6 and the speed changing device 14 are both installed in the air passage between the supercharging impeller and the main impeller, the power device 6 is connected with the wheel shaft 3 at the center of the impeller through the speed changing device 14, the pre-compressed air with relatively low temperature from the supercharging impeller enters the air inlet 8 after passing through the fixed grille 6 ' during operation, the air with relatively low temperature takes away most of the heat on the fixed grille, the temperature of the fixed grille is reduced, and the temperatures of the bearing 11, the power device 6 and the speed changing device 14 installed in the fixed grille are also reduced, so that the bearing 11, the power device 6 and the speed changing device 14 can operate in a proper temperature range for a long time, the service lives of the power device 6, the bearing 11 and the speed changing device 14 are relatively prolonged, because the outer side surfaces of the large blades 4 and the small blades 4 ' are blocked by the large blades 4 and the small blades 18 ', the compressed air in the large blade cavity 7 and the small blade cavity 7' do not contact with the wall of the wheel cavity 20, so that the side leakage of the compressed air is effectively reduced, the air compressing efficiency is further improved, other advantages are the same as the third embodiment, and the description is omitted for saving space.

Fig. 19, 20, 21, 22, 23, 6, and 7 collectively illustrate a seventh embodiment of the novel fluid pressure increasing device, which can be seen from the drawings, the novel fluid pressure increasing device illustrated in this embodiment is mainly composed of a housing 1, an impeller, a previous impeller, and an axle 3, an impeller cavity 20 and a previous impeller cavity 20 'are respectively formed in the housing 1, the impeller is composed of an impeller body 2, a central impeller blade 18, a large blade 4, and a small blade 4', the central impeller blade 18 divides an outer circumferential surface of the impeller body 2 into a front arc circumferential surface and a rear arc circumferential surface, the large blade 4 is formed by grouping and matching long and short blades at intervals, the large blade 4 is narrow-wide-up and narrow-down on the front arc circumferential surface, the small blade 4 'is narrow-wide-up and wide-down on the rear arc circumferential surface, the top ends of the large blade 4 and the small blade 4' are swept forward, that is, the middle section inclined along the rotation direction of the impeller is a C-shaped tangential wing with a forward-cut radial angle structure, the former impeller is also composed of a former impeller wheel body 2 ', a central impeller piece 18, a big impeller piece 4 and a small impeller piece 4', the central impeller piece 18 divides the outer circular surface of the wheel body 2 'into a front arc-shaped circumferential surface and a rear arc-shaped circumferential surface, the big impeller piece 4 is formed by grouping and matching long and short impeller pieces at intervals, the big impeller piece 4 is in a shape of narrow top and wide bottom on the front arc-shaped circumferential surface, the small impeller piece 4' is in a shape of narrow top and wide bottom on the rear arc-shaped circumferential surface, the top ends of the big impeller piece 4 and the small impeller piece 4 'are in a forward sweeping shape, namely, the middle section inclined along the rotation direction of the impeller piece is in a C-shaped twisted shape, the centripetal end is in a three-dimensional flow structure with downward tangent wing angle forward inclining shape, the impeller piece is arranged on the same root wheel shaft 3 as the former impeller piece, the bearings 11 are arranged at two ends of the wheel shaft 3, the impeller piece is arranged in an impeller wheel cavity 20 in the shell 1, the former impeller wheel cavity 20' in the shell 1, the side surfaces of the wheel body 2 and the wheel body 2 'of the previous impeller are provided with annular concave-convex airtight rings 19, the cavity wall corresponding to the airtight ring 19 in the shell 1 is provided with matched convex-concave airtight ring grooves 17, the sizes of the impeller cavity 20 and the impeller cavity 20' of the previous impeller are matched with the rotation shapes of the impeller and the previous impeller, the inner cavity wall of the impeller cavity 20 keeps a micro airtight gap and keeps a seal as much as possible but not contacted with the inner cavity wall of the impeller cavity 20, the inner cavity wall of the impeller cavity 20 'of the previous impeller cavity 20' keeps a micro airtight gap and keeps a seal as much as possible but not contacted with the inner cavity wall of the impeller cavity 20 'of the previous impeller cavity, the side surface of the wheel cavity 20 corresponding to the small blade 4' in the shell 1 is provided with a large semi-auxiliary cavity 10, the air inlet 8 is arranged at the center of the side surface of the impeller cavity 20 corresponding to the bottom of the large blade 4, the air outlet 9 of the large blade 4 is arranged on the impeller cavity 20 corresponding to the outer circumference of the large blade 4, the exhaust port 9 is communicated with the rear end of a large semi-circular auxiliary cavity 10 through a gradually-releasing-shaped pressure expansion cavity 10 ', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc-shaped edge of the small blade 4 ' is matched with the arc degree of the wall of the corresponding large semi-circular cavity ring 23 and keeps a tiny airtight gap, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow upper part and a wide lower part, the large semi-circular auxiliary cavity 10 is converged from the rear end along the rotation direction of the impeller, the exhaust port 9 ' of the small blade 4 ' is arranged on a wheel cavity 20 at the hollow position between the front end and the rear end of the large semi-circular auxiliary cavity 10, the exhaust port 9 ' is in a gradually-releasing shape and is communicated with an exhaust passage 13 through the gradually-releasing-shaped pressure expansion cavity 10 ', a plurality of C-shaped separating pieces 5 with the same cross section as the C-shaped large semi-circular auxiliary cavity 10 are arranged between the large semi-circular auxiliary cavity ring 23 in the C-circular auxiliary cavity 10 and the shell 1, the C-shaped partition 5 divides the large semi-circular auxiliary cavity 10 into a plurality of sections of C-shaped auxiliary cavities 10, the plurality of sections of C-shaped auxiliary cavities 10 are not communicated, C-shaped upper openings of the plurality of sections of C-shaped auxiliary cavities 10 are spirally arranged on the circumferential surface of the wheel cavity 20 corresponding to the top end of the small blade 4 'and are communicated with the wheel cavity 20, a spiral line 25 of the C-shaped upper opening of the section of the C-shaped auxiliary cavity 10 is tangentially and oppositely punched in an acute angle shape along the rotating direction of the small blade 4', namely the rotating direction 24 of the impeller, a C-shaped lower opening of the C-shaped auxiliary cavity 10 is arranged on the side surface of the wheel cavity 20 corresponding to the bottom of the small blade 4 'and is communicated with the wheel cavity 20, a concave-convex air-tight ring 19 on the impeller 2 is mutually embedded with a concave air-tight ring groove 17 on the wall of the wheel cavity 20 in the shell body 20 of the wheel cavity 20 to keep a micro air-tight gap, the large semi-annular auxiliary cavity 10' is also arranged on the side surface of the previous impeller 20 'corresponding to the small blade 4' on the previous impeller in the shell body 1, the front impeller air inlet 8 ' is arranged at the side center of a front impeller cavity 20 ' corresponding to the bottom of a large blade 4 on a front impeller, a bearing fixing grid 6 ' is arranged in the front impeller air inlet 8 ' at the side center of the front impeller cavity 20 ', a bearing 11 is arranged at the center of the bearing fixing grid 6 ', an exhaust port 9 of the large blade 4 on the front impeller is arranged on the outer circumference of the impeller cavity 20 ' corresponding to the large blade 4 on the front impeller, the exhaust port 9 of the large blade 4 on the front impeller is communicated with the rear end of a large semi-circular auxiliary cavity 10 ' on the front impeller through a gradually-enlarging-pressing cavity 12, a large semi-circular cavity ring 23 ' is arranged between the large semi-circular auxiliary cavity 10 ' on the front impeller and a small blade 4 ' on the front impeller, the radian of the arc-shaped edge of the small blade 4 ' on the front impeller is matched with the arc-degree of the wall of the corresponding large semi-circular cavity ring 23 ' and a micro airtight gap is kept, the big semi-circular cavity ring 23 'enables the cross section of a big semi-circular auxiliary cavity 10' of a front impeller in the shell 1 to be in a C shape with a narrow top and a wide bottom, the big semi-circular auxiliary cavity 10 'starts from the rear end to be in a convergence shape along the rotation direction of the front impeller, an exhaust port 9' of a small blade 4 'of the front impeller is arranged on a wheel cavity 20' at a neutral position between the front end and the rear end of the big semi-circular auxiliary cavity 10 'of the front impeller, the exhaust port 9' of the small blade 4 'on the front impeller is in a gradually-opened line shape and is communicated with a spiral exhaust passage 13' through a gradually-opened diffusion cavity 12, the spiral exhaust passage 13 'is communicated with an impeller air inlet 8, a plurality of C-shaped spacers 5' which are the same as the cross section of the big semi-circular auxiliary cavity 10 'of the C-shaped big semi-circular auxiliary cavity 10' on the front impeller are also communicated with the shell 1, the C-shaped spacers 5 'divide the big semi-circular auxiliary cavity 10' into a plurality of C-shaped auxiliary cavities 10 'and 10' with a plurality of sections, the multi-section C-shaped auxiliary cavity 10 ' is not communicated, the C-shaped upper opening of the multi-section C-shaped auxiliary cavity 10 ' is spirally arranged on the circumferential surface of a previous impeller cavity 20 ' corresponding to the top end of a previous impeller small blade 4 ' and is communicated with the previous impeller cavity 20 ', the spiral line 25 of the C-shaped upper opening of the C-shaped auxiliary cavity 10 ' is in acute angle opposite punching tangent shape along the rotating direction of the previous impeller small blade 4 ', namely the rotating direction 24 of the previous impeller, the C-shaped lower opening of the C-shaped auxiliary cavity 10 ' is communicated with the side surface of the previous impeller cavity 20 ' corresponding to the bottom of the previous impeller small blade 4 ' and is communicated with the previous impeller cavity 20 ', and the concave-convex air-tight ring 19 on the previous impeller body 2 ' is mutually embedded with the concave-convex air-tight ring groove 17 on the wall of the previous impeller cavity 20 ' in the shell 1 and keeps a micro air-tight gap.

The basic working principle is as follows: when the impeller works, the power device 6 drives the front impeller and the impeller to rotate at a high speed by inputting power through the wheel shaft 3, air in the large blade cavity 7 on the front impeller generates centrifugal force along with the high-speed rotation of the front impeller and moves from the bottom of the large blade cavity 7 of the front impeller, namely the side surface of the circle center of the front impeller, to the centrifugal end, namely the top end of the large blade 4 of the front impeller along the large blade 4 of the front impeller under the action of the centrifugal force, the pressure intensity of the bottom of the large blade cavity 7 of the front impeller is reduced to generate negative pressure, air in the atmosphere enters the air inlet 8 ' of the front impeller through the bearing fixing grid 6 ' under the action of the atmospheric pressure, along with the high-speed rotation of the front impeller, the air at the air inlet 8 ' is continuously sucked into the bottom of the large blade cavity 7 of the front impeller by the large blade cavity 7 of the front impeller, the air in the bottom of the large blade cavity 7 of the front impeller is pushed by the large blade 4 of the front impeller and rotates along with the front impeller to generate centrifugal force, the energy and the speed of the air in the bottom of the cavity 7 of the big blade of the previous impeller are rapidly increased, the air which is applied with energy by the big blade 4 of the previous impeller moves to the excircle of the previous impeller at a high speed along the big blade 4 of the previous impeller under the action of centrifugal force and gathers at the top end of the big blade 4 of the previous impeller to reduce the speed and increase the pressure, the compressed air which is pressurized at the top end of the big blade 4 of the previous impeller enters the gradually-releasing type pressure-expanding cavity 12 to reduce the speed and increase the pressure through the exhaust port 9 of the big blade 4 of the previous impeller when rotating to the exhaust port 9 of the big blade 4 of the previous impeller, meanwhile, the air in the bottom of the cavity 7 ' of the small blade of the previous impeller generates centrifugal force along with the high-speed rotation of the small blade 4 ' of the previous impeller under the push of the small blade 4 ' of the previous impeller, the air which moves to the top end of the small blade 4 ' of the previous impeller under the action of the centrifugal force, and the air which moves at a high speed in the cavity 7 ' of the small blade of the previous impeller rotates forward along with the small blade 4 ' of the previous impeller and is thrown away from the small blade 4 ' of the previous small blade The top end of the sub cavity 4 'enters the upper opening of the front section of the C-shaped sub cavity 10', the bottom of the front section of the small blade cavity 7 'of the impeller generates negative pressure, the air in the lower opening of the section of the C-shaped sub cavity 10' corresponding to the bottom of the front section of the small blade cavity 7 'of the impeller on the front section of the impeller is sucked into the cavity 7' of the small blade of the impeller and rotates forwards along with the cavity 7 'of the small blade of the impeller, the negative pressure generated in the rear end of the sub cavity 10' of the large semi-circular ring shape sucks the compressed air in the pressure expansion cavity 12 boosted by the large blade 4 of the impeller into the rear end of the sub cavity 10 'of the large semi-circular ring shape, and the compressed air entering the rear end of the sub cavity 10' of the large semi-circular ring shape is sucked into the cavity 7 'of the small blade of the impeller and accelerated and thrown away from the top end of the small blade 4' of the impeller to enter the upper opening of the section of the front section of the sub cavity 10 'of the C-shaped cavity at high speed along with the cavity 7' of the front section of the small blade of the impeller, the compressed air in the upper opening of the section of the C-shaped auxiliary cavity 10 ' moves to the lower opening of the section of the C-shaped auxiliary cavity 10 ' along the wall of the C-shaped auxiliary cavity 10 ' around the cavity ring 23 ' and is subjected to speed reduction and pressurization simultaneously, the compressed air subjected to speed reduction and pressurization again in the lower opening of the section of the C-shaped auxiliary cavity 10 ' is swept into the front impeller small blade cavity 7 ' again by the front impeller small blade 4 ' which rotates to perform high-speed rotation motion along the front impeller small blade cavity 7 ', the compressed air subjected to energy application by the front impeller small blade 4 ' is again swept into the upper opening of the section of the C-shaped auxiliary cavity 10 ' further ahead, the compressed air in the upper opening of the section of the C-shaped auxiliary cavity 10 ' moves to the lower opening of the C-shaped auxiliary cavity 10 ' again around the cavity ring 23 ' along the wall of the C-shaped auxiliary cavity 10 ', and the compressed air in the section of the C-shaped auxiliary cavity 10 ' continuously performs spiral pressurization motion around the cavity ring 23 ' in the C-shaped auxiliary cavity 10 ' and the front impeller small blade cavity 7 ' under the push of the front impeller small blade 4 ', the energy is applied once by the front impeller small blade cavity 7 'every time the compressed air enters the front impeller small blade cavity 7', the compressed air is continuously applied with energy for many times by the front impeller small blade 4 'to form high-energy gas, the high-energy gas is discharged into the diffusion cavity 12 through the exhaust port 9' of the front impeller small blade 4 'to reduce the speed and boost the pressure again, the high-energy gas formed after the speed and the boost again is discharged into the impeller air inlet 8 through the exhaust port 13' of the front impeller, meanwhile, the air in the large blade cavity 7 on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves from the bottom of the large blade cavity 7, namely the center of the impeller on the side of the large blade 4, to the centrifugal end, namely the top end of the large blade 4, along the large blade 4 under the action of the centrifugal force, the pressure at the bottom of the large blade cavity 7 is reduced, the high-energy gas at the air inlet 8 enters the bottom of the large blade cavity 7 at a high speed under the action of the pressure, the high-energy gas in the bottom of the large blade cavity 7 is pushed by the large blade 4 and rotates along with the impeller to generate centrifugal force again, the energy and the speed of the high-energy gas in the bottom of the large blade cavity 7 rise again, the high-energy gas with energy applied by the large blade 4 moves to the excircle of the impeller at high speed along the large blade 4 under the action of the centrifugal force and gathers at the top end of the large blade 4 to reduce the speed and boost the pressure again, the high-energy gas with the boosted top end of the large blade 4 rotates to the exhaust port 9 of the large blade 4 and enters the gradually-releasing type pressure-expanding cavity 10 'through the exhaust port 9 to reduce the speed and boost the pressure, meanwhile, the air in the bottom of the small blade cavity 7' is pushed by the small blade 4 'to generate centrifugal force along with the high-speed rotation of the impeller and moves to the top end of the small blade 4' along the small blade 4 'under the action of the centrifugal force, the air with the high-speed movement in the small blade cavity 7' rotates forwards along with the small blade 4 'and is thrown away from the top end of the small blade 4' and enters the upper opening of the front C-shaped auxiliary cavity 10, the pressure at the bottom of the small blade cavity 7 'is reduced, the air in the lower opening of the C-shaped auxiliary cavity 10 section corresponding to the bottom of the small blade cavity 7' at the rear end of the large semi-circular auxiliary cavity 10 is sucked into the small blade cavity 7 'and rotates forwards along with the small blade cavity 7', the pressure in the rear end of the large semi-circular auxiliary cavity 10 is reduced, the high-energy gas pressurized by the large blade 4 enters the rear end of the large semi-circular auxiliary cavity 10 at a high speed under the action of pressure, similarly, the high-energy gas entering the rear end of the large semi-circular auxiliary cavity 10 is swept into the small blade cavity 7 'by the small blade 4' again and rotates forwards at a high speed along with the small blade cavity 7 ', the high-energy gas rotating at a high speed is accelerated to be thrown away from the top end of the small blade 4' and enters the upper opening of the front C-shaped auxiliary cavity 10 section, the high-energy gas in the upper opening of the C-shaped auxiliary cavity 10 section moves towards the lower opening of the C-shaped auxiliary cavity 10 section along the C-shaped auxiliary cavity 10 surrounding cavity ring 23 and is decelerated and pressurized again, the high-energy gas in the section of the C-shaped auxiliary cavity 10, after being subjected to speed reduction and pressurization again, is swept into the small blade cavity 7 ' again by the small blade 4 ' which is then rotated to perform high-speed rotation motion along the small blade cavity 7 ', the high-energy gas is thrown into the upper opening of the section of the C-shaped auxiliary cavity 10 again after being subjected to energy application by the small blade 4 ', the high-energy gas in the section of the C-shaped auxiliary cavity 10 performs continuous spiral pressurization motion in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ' around the cavity ring 23 again along the wall of the C-shaped auxiliary cavity 10 to the lower opening of the C-shaped auxiliary cavity 10, the high-energy gas in the section of the C-shaped auxiliary cavity 10 is pushed by the small blade 4 ' to perform continuous spiral pressurization motion in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ', the high-energy gas is subjected to energy application once by the small blade 4 ' once every time when entering the small blade cavity 7 ', the high-energy gas is subjected to energy application for multiple times continuously to form ultrahigh-energy gas, and the ultrahigh-energy gas is finally discharged into the pressure expansion cavity 10 ' through the small blade 9 ', after being subjected to speed reduction and pressurization again And (6) discharging. It can be seen from the above description that the novel fluid supercharging device in this embodiment is characterized in that the impeller and the previous impeller are mounted on the same wheel shaft 3 together to form a coaxial series multi-stage compression structure, the bearings 11 are mounted at two ends of the wheel shaft 3 to form a bridge structure, the bearing 11 is mounted at the center of the fixed grid 6 ' in the air inlet 8 ' of the previous impeller, when in operation, air with lower external temperature firstly passes through the bearing fixed grid 6 ' and then enters the air inlet 8 ' of the previous impeller, the air with lower temperature takes away most of heat on the fixed grid 6 ', the temperature of the fixed grid 6 ' is reduced, and simultaneously the temperature of the bearing 11 mounted in the center of the fixed grid 6 ' is also reduced, so that the bearing 11 can work in a proper temperature range for a long time, the service life of the whole machine is prolonged, the external air firstly passes through the first stage compression by the previous impeller and then enters the impeller to undergo the second stage compression, therefore, the times of obtaining kinetic energy by air are increased, the compression stroke of the air is lengthened, and the exhaust pressure of the output end is further improved.

Fig. 24, 25, 6, and 7 collectively show an eighth embodiment of the novel fluid pressurizing device, and it can be seen from the drawings that the novel fluid pressurizing device shown in this embodiment mainly comprises a housing 1, an impeller, an axial flow type pressurizing impeller, an axle 3, and a power device 6, wherein the housing 1 is internally provided with an impeller wheel cavity 20 and a pressurizing impeller wheel cavity, the axial flow type pressurizing impeller comprises a pressurizing impeller wheel body 2 "and pressurizing impeller blades 4", the impeller comprises a wheel body 2, a central wheel blade 18, a large blade 4, and a small blade 4 ', the central wheel blade 18 divides an outer circumferential surface of the wheel body 2 into a front arc circumferential surface and a rear arc circumferential surface, the large blade 4 is formed by grouping and matching long and short blades at intervals, the large blade 4 is narrow at the top and wide at the bottom on the front arc circumferential surface, the small blade 4' is narrow at the top and wide at the bottom arc circumferential surface, the top ends of the large blades 4 and the small blades 4 'are in a forward sweepness shape, namely, the middle sections of the large blades 4 and the small blades 4' are inclined along the rotation direction of the impeller and are in a C-shaped twisted centripetal three-dimensional flow structure with sweepback edge wing angle forward-inclining shape, the power device 6, the impeller and the booster impeller are installed on the same axial line together and fixed on the shell 1 by bolts 22, the power device 6 is installed at one end of the wheel shaft 3, the booster impeller is installed at the other end of the wheel shaft 3, the bearing 11 is installed on the wheel shafts 3 at the two ends of the power device 6 and the impeller, the impeller is installed in an impeller cavity 20 in the shell 1, the booster impeller is installed in the impeller cavity, the side surface of the wheel body 2 is provided with an annular concave-convex airtight ring 19, the wall of the impeller cavity 20 in the shell 1 corresponding to the airtight ring 19 is provided with matched concave-convex airtight ring grooves 17, and the size of the impeller cavity 20 is matched with the rotation shape of the impeller, the impeller and the wall of the inner cavity of the wheel cavity 20 keep a tiny airtight gap, the impeller and the wall of the inner cavity of the wheel cavity 20 keep a sealing state as far as possible and do not contact with the wall of the inner cavity of the wheel cavity, the size of the wheel cavity of the booster impeller is matched with the revolution shape of the booster impeller, the booster impeller and the wall of the inner cavity of the wheel cavity of the booster impeller keep a tiny airtight gap as far as possible, the boosting impeller and the wall of the inner cavity of the wheel cavity of the booster impeller keep a sealing state as far as possible and do not contact with the wall of the inner cavity of the wheel cavity of the booster impeller, the air inlet 8 of the booster impeller is arranged in front of the blades 4 of the booster impeller, namely outside the circumference of the side surface of the wheel body 2 of the booster impeller, the back of the blades 4 of the booster impeller is communicated with the air inlet 8 of the impeller through the fixed grid 6 ', the side surface of the wheel cavity 20 corresponding to the small blades 4' in the shell 1 is provided with a big semi-ring-shaped auxiliary cavity 10, the air inlet 8 is arranged at the center of the side surface of the impeller cavity 20 corresponding to the bottom of the big blades 4, a bearing 11 is installed at the center of the bearing fixing grating 6 ', an exhaust port 9 of the large blade 4 is arranged on the outer circumference of an impeller wheel cavity 20 corresponding to the large blade 4, the exhaust port 9 is communicated with the rear end of a large semi-circular auxiliary cavity 10 through a gradually-releasing-shaped pressure expansion cavity 10', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc edge of the small blade 4' is matched with the arc degree of the wall of the corresponding large semi-circular cavity ring 23 and keeps a tiny airtight gap, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow top and a wide bottom, the large semi-circular auxiliary cavity 10 is in a convergent shape from the rear end along the rotation direction of the impeller, an exhaust port 9 'of the small blade 4' is arranged on a wheel cavity 20 at a hollow position between the front end and the rear end of the large semi-circular auxiliary cavity 10, the exhaust port 9 'is in a gradually-releasing shape and is communicated with an exhaust channel 13 through the gradually-releasing-shaped pressure expansion cavity 10', a plurality of C-shaped spacers 5 with the same cross section as the C-shaped large semi-circular auxiliary cavity 10 are arranged between the large semi-circular cavity ring 23 in the C-shaped large semi-circular auxiliary cavity 10 and the shell 1, the C-shaped partition 5 divides a large semi-circular auxiliary cavity 10 into a plurality of sections of C-shaped auxiliary cavities 10, the sections of C-shaped auxiliary cavities 10 are not communicated, the C-shaped upper opening of the multi-section C-shaped auxiliary cavity 10 is spirally arranged on the circumferential surface of the wheel cavity 20 corresponding to the top end of the small blade 4' and is communicated with the wheel cavity 20, the spiral line 25 of the C-shaped upper opening of the C-shaped auxiliary cavity 10 section is tangent and opposite-rushed to an acute angle shape with the rotating direction of the small blade 4', namely the rotating direction 24 of the impeller, the C-shaped lower opening of the C-shaped auxiliary cavity 10 is arranged on the side surface of the wheel cavity 20 corresponding to the bottom of the small blade 4' and is communicated with the wheel cavity 20, the concave-convex airtight ring 19 on the impeller body 2 is mutually embedded with the concave-convex airtight ring groove 17 on the wall of the wheel cavity 20 in the shell 1 on the wheel cavity 20 surface, and a tiny airtight gap is kept.

The basic working principle is as follows: when the impeller works, the power device 6 inputs power through the wheel shaft 3 to drive the impeller and the booster impeller to rotate at high speed, the blades 4 'of the booster impeller incite air at high speed into the air inlet 8 through the fixed grid 6' to enable the pressure in the air inlet 8 to rise, meanwhile, the air in the large blade cavity 7 on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves from the bottom of the large blade cavity 7, namely the circle center of the impeller on the side of the large blade 4, to the centrifugal end, namely the top end of the large blade 4 along the large blade 4 under the action of the centrifugal force, the pressure at the bottom of the large blade cavity 7 reduces to generate negative pressure, along with the high-speed rotation of the impeller, the air pressurized by the booster impeller at the air inlet 8 enters the bottom of the large blade cavity 7 at high speed under the action of pressure difference, the air entering the bottom of the large blade cavity 7 at high speed is pushed by the large blade 4 to rotate along with the impeller to generate centrifugal force, and the energy and the speed of the air in the bottom of the large blade cavity 7 rise rapidly, the air which is energized by the big blade 4 moves to the excircle of the impeller at a high speed along the big blade 4 under the action of centrifugal force and gathers at the top end of the big blade 4 to reduce the speed and increase the pressure, when the compressed air which is pressurized at the top end of the big blade 4 rotates to the exhaust port 9, the compressed air enters the gradually-releasing-shaped diffusion cavity 10 ' through the exhaust port 9 to reduce the speed and increase the pressure, meanwhile, the air in the bottom of the cavity 7 ' of the small blade generates centrifugal force along with the high-speed rotation of the impeller under the pushing of the small blade 4 ', the air moves to the top end of the small blade 4 ' along the small blade 4 ' under the action of the centrifugal force, the air which moves at a high speed in the cavity 7 ' of the small blade rotates forwards along with the small blade 4 ' and is thrown away from the top end of the small blade 4 ' to enter the upper opening of the front C-shaped auxiliary cavity 10 section, the bottom of the cavity 7 ' of the small blade generates negative pressure, and the air in the lower opening of the C-shaped auxiliary cavity 10 corresponding to the bottom of the cavity 7 ' of the big semi-annular auxiliary cavity 10 is sucked into the cavity 7 ' of the small blade and moves forwards along with the small blade The compressed air in the upper opening of the C-shaped auxiliary cavity 10 section moves to the lower opening of the C-shaped auxiliary cavity 10 section along the cavity wall of the C-shaped auxiliary cavity 10 surrounding the cavity ring 23 and is subjected to speed reduction and pressurization simultaneously, the compressed air in the lower opening of the C-shaped auxiliary cavity 10 section after speed reduction and pressurization again is transferred to the small blade 4 ' to enter the small blade cavity 7 ' again and is swept into the small blade cavity 7 ' to perform high-speed rotation movement along the small blade cavity 7 ', the compressed air is subjected to energy application by the small blade 4 ' again and then is thrown into the front C-shaped auxiliary cavity 10 section again, the compressed air in the upper opening of the C-shaped auxiliary cavity 10 section moves towards the lower opening of the C-shaped auxiliary cavity 10 along the wall of the C-shaped auxiliary cavity 10 around the cavity ring 23 again, the compressed air in the C-shaped auxiliary cavity 10 section is pushed by the small blades 4 ' to perform continuous spiral pressurization movement in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ' around the cavity ring 23, the energy is applied once by the small blades 4 ' every time the compressed air enters the small blade cavity 7 ', the compressed air is continuously applied with energy for multiple times by the small blades 4 ' to form high-energy gas, and the high-energy gas is discharged into the pressure expansion cavity 10 ' through the small blade gas outlet 9 ' and is discharged through the gas outlet 13 after the speed is reduced again. It can be seen from the above description that the novel fluid supercharging device in the embodiment is characterized in that the power device, the impeller and the axial flow type supercharging impeller are jointly installed on the same wheel shaft 3, the axial flow type supercharging impeller effectively improves the air inlet pressure at the air inlet 8, the bearing 11 is installed and fixed on the fixed grating 6 ' in the air channel in front of the air inlet 8, the air with lower external temperature enters the air inlet 8 after passing through the fixed grating 6 ' of the bearing 11 in the work, the air with lower temperature takes away most of the heat on the fixed grating 6 ', the temperature of the fixed grating 6 ' is reduced, and meanwhile, the temperature of the bearing 11 installed in the center of the fixed grating 6 ' is also reduced, so that the bearing 11 can work in a proper temperature range for a long time, and the service life of the whole machine is prolonged.

Fig. 26, fig. 27, fig. 28, and fig. 29 collectively show a ninth embodiment of the novel fluid pressurizing device, and it can be seen from the drawings that the novel fluid pressurizing device shown in this embodiment is mainly composed of a housing 1, an impeller and a wheel shaft 3, an impeller wheel cavity 20 is formed in the housing 1, the impeller is composed of a wheel body 2, a tongue piece 26, a central wheel piece 18, a large blade 4, a large blade wheel piece 18 ', a small blade wheel piece 18 ″, the central wheel piece 18 divides the outer circumferential surface of the wheel body 2 into a front arc-shaped circumferential surface and a rear arc-shaped circumferential surface, the large blade 4 is formed by grouping long and short blades at intervals, the large blade 4 is narrow-top-wide-bottom on the front arc-shaped circumferential surface, the outer edge of the large blade 4 is blocked by the large blade wheel piece 18 ', the small blade 4 ' is narrow-top-bottom-wide-bottom on the rear arc-shaped circumferential surface, the outer edge of the small blade 4 is blocked by the small blade wheel piece 18 ″, the top ends of the large blades 4 and the small blades 4 ' are in a three-dimensional flow structure with an s-shaped twisted middle section and a forward-inclining end as a lower cut wing angle, the inner edges of the small blades 4 ' and the large blades 4 at the top ends, namely the centrifugal ends, are in an edge-to-edge side-by-side integrated structure, the top end of the central wheel piece 18 is in a split structure with a plurality of radial adjacent blades as independent units, the bottom edge of the split central wheel piece 18 between the adjacent blades is in loose axle linkage through a tongue piece shaft 27 to form a movable tongue piece 26, the top edge of the tongue piece 26 takes the tongue piece shaft 27 as an axle center and takes the corresponding surface of the radial adjacent blades as two sliding edges to freely slide in the distance of the sum of the widths of the top ends of the large blades 4 and the small blades 4 ', the shape of the movable tongue piece 26 is matched with the cross section of a cavity between the radial adjacent blades, and the two radial edges of the tongue piece 26 respectively keep relative sliding seal with the corresponding surfaces of the radial adjacent blades, when the top edge of the tongue piece 26 slides to the inner side of any outer edge sealing wheel piece of the large blade 4 and the small blade 4 ', the top edge of the tongue piece 26 and the contact surface of the wheel piece form relative contact sealing, the wheel shaft 3 is arranged in the center of the wheel body 2, the wheel shaft 3 is provided with the bearing 11 and the sealing device 16, the impeller is arranged in an impeller wheel cavity 20 in the shell 1, the shell 1 is provided with the radiating fin 21, the side surface of the wheel body 2 is provided with the annular concave-convex airtight ring 19, the wall of the wheel cavity 20 in the shell 1 corresponding to the wheel cavity 20 and the airtight ring 19 is provided with the matched concave-convex airtight ring groove 17, the size of the impeller wheel cavity 20 is matched with the rotation shape of the impeller, the wall in the impeller wheel cavity 20 keeps a small airtight gap and keeps sealed as much as possible but not contacted with the wall in the wheel cavity 20, the side surface of the wheel cavity 20 corresponding to the small blade 4' in the shell 1 is provided with the large semi-circular auxiliary cavity 10, the air inlet 8 is arranged at the center of the side face of the impeller cavity 20 corresponding to the bottom of the large blade 4, the air outlet 9 of the large blade 4 is arranged on the outer circumference of the impeller cavity 20 corresponding to the large blade 4, the air outlet 9 is communicated with the rear end of the large semi-circular auxiliary cavity 10 through the gradually-expanding expansion cavity 10 ', a large semi-circular cavity ring 23 is arranged between the large semi-circular auxiliary cavity 10 and the small blade 4 ', the radian of the arc edge of the small blade 4 ' is matched with the arc degree of the wall of the corresponding large semi-circular cavity ring 23 and keeps a tiny airtight gap, the large semi-circular cavity ring 23 enables the cross section of the large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow top and a wide bottom, the C-shaped upper end of the C-shaped large semi-circular auxiliary cavity 10 is arranged on the circumferential face of the impeller cavity 20 corresponding to the top end of the small blade 4 ' and is communicated with the impeller cavity 20, the C-shaped lower end of the C-shaped large semi-circular auxiliary cavity 10 is arranged on the side face of the impeller cavity 20 corresponding to the bottom of the small blade 4 ' and is communicated with the impeller cavity 20, the large semi-circular auxiliary cavity 10 is in a convergent shape from the rear end to the front along the rotation direction of the impeller and is communicated with the impeller, the exhaust port 9 'of the small blade 4' is arranged on the impeller cavity 20 at the position of a gap between the front end and the rear end of the large semi-circular auxiliary cavity 10, the exhaust port 9 'is in an involute shape and is communicated with the exhaust passage 13 through the gradually-releasing-shaped expansion cavity 10', and the concave-convex airtight ring 19 on the impeller body 2 is mutually embedded with the concave-convex airtight ring groove 17 on the wall of the impeller cavity 20 in the shell body 1 of the impeller cavity 20 to keep a micro airtight gap.

The basic working principle is as follows: when the impeller works, the power device drives the impeller to rotate at a high speed by inputting power through the wheel shaft 3, external air enters the bottom of a large blade cavity 7 on the side surface of the impeller through the air inlet 8, the air in the bottom of the large blade cavity generates centrifugal force along with the high-speed rotation of the impeller, the air moves towards the outer circular surface of the impeller, namely the top end of the large blade 4, in the large blade cavity 7 along with the high-speed rotation of the impeller under the action of the centrifugal force, because the large blade 4 is narrow at the top and wide at the bottom, the air is forced to narrow and accelerate and is gathered and pressurized at the top end of the large blade 4 while moving at a high speed along the outward centrifugal direction of the large blade 4 under the action of the centrifugal force, the air on the other side of the impeller, namely the side of the small blade 4 ', is thrown away to enter the top end of the small blade 4 ' due to the high-speed rotation of the impeller, the bottom of the small blade cavity 7 ' generates negative pressure, when the top end of the small blade 4 ' rotates to the rear end of the C-shaped auxiliary cavity 10 through the air outlet 9 ', air in the rear end of the C-shaped auxiliary cavity 10 rapidly enters the bottom of the small blade cavity 7 ' through the lower opening of the C-shaped auxiliary cavity 10 under the action of pressure difference, the air in the C-shaped auxiliary cavity 10 is continuously and continuously thrown away by the small blades 4 ' to enter the upper opening of the C-shaped auxiliary cavity 10 in front along with the high-speed rotation of the impeller, the pressure in the rear end of the C-shaped auxiliary cavity 10 is reduced, at the moment, compressed air continuously gathered and pressurized at the top end of the large blade 4 reaches the upper opening of the rear end of the C-shaped auxiliary cavity 10 in front of the exhaust opening 9 ' of the small blade 4 ', the compressed air gathered at the top end of the large blade cavity 7 rapidly pushes the tongue piece 26 to slide towards one side of the small blade 4 ' under the action of the pressure difference, so that the top end of the large blade cavity 7 is communicated with the upper opening of the rear end of the C-shaped auxiliary cavity 10, the compressed air gathered at the top end of the large blade cavity 7 rapidly enters the upper opening of the rear end of the C-shaped auxiliary cavity 10 and downwardly enters the lower opening of the C-shaped auxiliary cavity 10 along the cavity ring 23, compressed air continuously enters the upper port at the rear end of the C-shaped auxiliary cavity 10 from the top end of the large blade cavity 7 along with the high-speed rotation of the impeller, the compressed air in the lower port at the rear end of the C-shaped auxiliary cavity 10 is also continuously taken away by the small blade 4 'and thrown into the upper port of the front C-shaped auxiliary cavity 10 along with the high-speed rotation of the impeller, so that the pressure in the upper port of the front C-shaped auxiliary cavity 10 is continuously increased, the pressure at the top end of the small blade 4' is also continuously increased, when the pressure at the top end of the small blade 4 'exceeds the pressure at the top end of the large blade 4, the top edge of the tongue piece 26 slides to one side of the large blade 4 under the action of pressure difference, so that the channel from the top end of the large blade cavity 7 to the upper port of the C-shaped auxiliary cavity 10 is gradually narrowed, the pressure in the C-shaped auxiliary cavity 10 at the position close to the exhaust port 9' of the small blade 4 is highest, and the top edge of the tongue piece 26 almost completely closes the channel from the top end of the large blade cavity 7 to the upper port of the C-shaped auxiliary cavity 10, the air in the large blade cavity 7 can only be gathered and pressurized at the top end of the large blade cavity 7 under the action of centrifugal force, when the large blade 4 rotates the exhaust port 9 'of the small blade 4 again, because the air in the rear end of the C-shaped auxiliary cavity 10 in front of the exhaust port 9' of the small blade 4 'is taken away by the small blade 4' and thrown to the C-shaped auxiliary cavity 10 at the front, the pressure is lower, the compressed air with higher pressure in the top end of the large blade cavity 7 pushes the tongue piece 26 to slide to the side of the small blade 4 'again to open the passage between the large blade cavity 7 and the upper opening at the rear end of the C-shaped auxiliary cavity 10, the compressed air with higher pressure in the top end of the large blade cavity 7 enters the upper opening at the rear end of the C-shaped auxiliary cavity 10 in front of the exhaust port 9' of the small blade 4 at high speed, the opening between the top end of the large blade cavity 7 and the upper opening at the rear end of the C-shaped auxiliary cavity 10 is greatly influenced by the pressure at the exhaust port 9 'of the small blade 4', when the pressure of the exhaust port 9 ' of the small blade 4 ' is lower, the top edge of the tongue piece 26 is deviated to one side of the small blade 4 ', the compressed gas in the top end of the cavity 7 of the large blade directly enters the upper opening of the C-shaped auxiliary cavity 10 and the exhaust port 9 ' of the small blade 4 ', when the pressure of the exhaust port 9 ' of the small blade 4 ' is higher, the compressed gas in the top end of the cavity 7 of the large blade can only push the top edge of the tongue piece 26 to slide to one side of the exhaust port 9 ' of the small blade 4 ' after rotating the small blade 4 ' so as to open the upper opening of the rear end of the C-shaped auxiliary cavity 10 in front of the exhaust port 9 ' of the small blade 4 ' and enter the C-shaped auxiliary cavity 10, simultaneously, the pressure in the top end of the cavity 7 of the large blade is reduced, along with the continuous forward rotation of the impeller, the continuous rising of the pressure of the side of the small blade 4 ', the top edge 26 slides to the side of the large blade 4 again, so that the channels of the cavity 7 and the upper opening of the C-shaped auxiliary cavity 10 are gradually narrowed again until being closed, the compressed air entering the bottom of the small blade cavity 7 'is pushed by the small blade 4' to generate centrifugal force along with the high-speed rotation of the impeller, the air moving at high speed in the small blade cavity 7 'moves towards the top end of the small blade 4' along with the small blade 4 'under the action of the centrifugal force, the air moving at high speed in the small blade cavity 7' rotates forwards along with the small blade 4 'and is thrown away from the top end of the small blade 4' to enter the upper opening of the front large semicircular C-shaped auxiliary cavity 10, the pressure at the bottom of the small blade cavity 7 'is reduced, the compressed air at the rear end of the large semicircular auxiliary cavity 10 and the lower opening of the corresponding C-shaped auxiliary cavity 10 at the bottom of the small blade cavity 7' enter the small blade cavity 7 'at high speed under the action of pressure difference and rotates forwards along with the small blade cavity 7', and is accelerated to be thrown away from the top end of the small blade 4 'to enter the upper opening of the larger semicircular C-shaped auxiliary cavity 10 at the front along with the high-speed forward rotation of the small blade cavity 7', compressed air in the upper opening of the large semi-circular C-shaped auxiliary cavity 10 moves towards the lower opening of the C-shaped auxiliary cavity 10 along the cavity wall of the C-shaped auxiliary cavity 10 around the cavity ring 23 and is subjected to speed reduction and pressurization again, the compressed air subjected to speed reduction and pressurization again in the lower opening of the C-shaped auxiliary cavity 10 is swept into the small blade cavity 7 'again by the small blade 4' and is subjected to high-speed rotation movement along the small blade cavity 7 ', the compressed air subjected to energy application by the small blade 4' enters the upper opening of the C-shaped auxiliary cavity 10 at high speed again, the compressed air in the upper opening of the C-shaped auxiliary cavity 10 moves towards the lower opening of the C-shaped auxiliary cavity 10 around the cavity ring 23 along the wall of the C-shaped auxiliary cavity 10 again, the compressed air in the C-shaped auxiliary cavity 10 and the small blade cavity 7 'continuously and spirally moves around the cavity ring 23 under the push of the small blade 4', and the energy application by the small blade 4 'is carried out once when the compressed air enters the small blade cavity 7', the compressed air is continuously applied with energy for many times by the small blades 4 'to form high-energy gas, and the high-energy gas enters the pressure expansion cavity 10' through the exhaust ports 9 'of the small blades 4' and is discharged through the exhaust port 13 after the speed is reduced and the pressure is increased again. It can be seen from the above description that the present embodiment is characterized in that the inner edges of the top ends of the small blades 4 ' and the large blades 4 are in an edge-to-edge parallel integral structure, the top end of the central wheel 18 is in a split structure in which a plurality of longitudinal adjacent two blades are independent units, the bottom edge of the split central wheel 18 between the adjacent two blades is actively linked by the blade shaft 27 to form a movable tongue piece 26, the top edge of the tongue piece 26 uses the tongue piece shaft 27 as an axis and uses the corresponding surface of the radially adjacent blade as two sliding edges to freely slide in the distance between the sum of the widths of the top surfaces of the large blades 4 and the small blades 4 ', the shape of the movable tongue piece 26 is adapted to the cross section of the cavity between the radially adjacent two blades, the two radial edges of the tongue piece 26 respectively keep relative sliding seals with the corresponding surfaces of the radially adjacent blades, when the top edge of the tongue piece 26 slides to the outer edge of any one of the large blades 4 and the small blades 4 ' to block the inner edge, the top edge of the tongue piece 26 forms relative contact seal with the contact surface of the wheel piece, the tongue piece 26 has the function that when the pressure of the exhaust port 9 'of the small blade 4' is higher, the compressed air gathered at the top end of the cavity 7 of the large blade can only enter the upper end of the C-shaped auxiliary cavity 10 in front of the exhaust port 9 'of the small blade 4', the compressed air can be spirally pressurized and circulated in the cavity 7 'of the C-shaped auxiliary cavity and the small blade until the compressed air is exhausted from the exhaust port 9' of the small blade 4 ', when the pressure of the exhaust port 9' of the small blade 4 'is lower, the compressed air gathered at the top end of the cavity 7 of the large blade can simultaneously enter the upper end of the C-shaped auxiliary cavity 10 and the exhaust port 9' of the small blade 4 ', namely, part of the compressed air in the cavity 7 of the large blade can directly enter the exhaust port 9' of the small blade 4 'to be exhausted without entering the C-shaped auxiliary cavity 10 and the cavity 7' of the small blade to be spirally pressurized and circulated, thus the exhaust amount during low-pressure work is increased, the air displacement of the large blade cavity 7 entering the C-shaped auxiliary cavity 10 is automatically adjusted, the automatic matching of the air displacement and the air exhaust pressure between the large blade 4 and the small blade 4' is realized, and the working efficiency of the impeller is further improved. The heat sink 21 on the housing 1 not only has a heat dissipating function but also serves to reinforce the housing 1, and other advantages are the same as those of the first embodiment, and thus, a description thereof will not be repeated.

Fig. 30, fig. 31, fig. 32, fig. 20, fig. 21, fig. 6, and fig. 7 collectively show a tenth embodiment of the novel fluid pressurizing device, which can be seen from the drawings, the novel fluid pressurizing device shown in this embodiment is mainly composed of a housing 1, a power shaft 6 ", an impeller, an axle 3, a previous impeller axle 3 ', a speed change device 15, and a speed change control mechanism 15, an impeller cavity 20 and a previous impeller cavity 20' are respectively formed in the housing 1, the impeller is composed of a wheel body 2, a central wheel piece 18, a large blade 4, and a small blade 4 ', the central wheel piece 18 divides an outer circumferential surface of the wheel body 2 into a front arc-shaped circumferential surface and a rear arc-shaped circumferential surface, the large blade 4 is formed by grouping long and short blades at intervals, the large blade 4 is narrow-down-wide-shaped on the front arc-shaped circumferential surface, the small blade 4' is matched with the rear arc-shaped circumferential surface, the top ends of the large blades 4 and the small blades 4 'are in a forward swept shape, namely a three-dimensional flow structure with a C-shaped twisted centripetal end as a lower tangential wing angle and a forward inclined central end along the rotation direction of the impeller, the former impeller is also composed of a front impeller wheel body 2', a central wheel sheet 18, a large blade 4 and a small blade 4 ', the central wheel sheet 18 divides the outer circular surface of the wheel body 2' into a front arc-shaped circumferential surface and a rear arc-shaped circumferential surface, the large blade 4 is formed by grouping and matching long blades and short blades at intervals, the large blade 4 is in a shape of being narrow at the top and wide at the bottom on the front arc-shaped circumferential surface, the small blade 4 'is in a shape of being narrow at the top and wide at the bottom on the arc-shaped circumferential surface, the top ends of the large blade 4 and the small blade 4' are in a forward swept shape, namely a three-dimensional flow structure with a C-shaped twisted centripetal end as a lower tangential wing angle and a forward inclined central end along the rotation direction of the impeller, and the power shaft 6, an impeller, a wheel shaft 3, a wheel shaft, a blade and a blade, The front impeller, a front impeller wheel shaft 3 'and a speed change device 15 are jointly installed on the same axis, the front impeller is installed on the front impeller wheel shaft 3', the impeller is installed on the wheel shaft 3, one end of the wheel shaft 3 is connected with a power shaft 6 'through a speed change device 14, the other end of the wheel shaft 3 is connected with the front impeller wheel shaft 3' through another speed change device 14, speed change control mechanisms 15 are respectively installed on the two speed change devices 14, a bearing 11 and a sealing device 16 are installed on the front impeller wheel shaft 3 'and the power shaft 6', the impeller is installed in an impeller wheel cavity 20 in a shell 1, the front impeller is installed in the front impeller wheel cavity 20 'in the shell 1, annular concave-convex air-tight rings 19 are arranged on the side surfaces of the impeller body 2 and the front impeller wheel body 2', and matched air-tight ring grooves 17 are arranged on the cavity walls corresponding to the air-tight rings 19 in the shell 1, the size of the impeller wheel cavity 20 and the previous impeller wheel cavity 20 ' is matched with the rotation shape of the impeller and the previous impeller, the impeller keeps a tiny airtight gap with the inner cavity wall of the impeller wheel cavity 20 and keeps sealing as much as possible but does not contact with the inner cavity wall of the impeller wheel cavity 20 ', the previous impeller keeps a tiny airtight gap with the inner cavity wall of the previous impeller wheel cavity 20 ' and keeps sealing as much as possible but does not contact with the inner cavity wall of the previous impeller wheel cavity 20 ', the side surface of the wheel cavity 20 corresponding to the small blade 4 ' in the shell 1 is provided with a large semicircular auxiliary cavity 10, the air inlet 8 is arranged at the center of the side surface of the impeller wheel cavity 20 corresponding to the bottom of the large blade 4, the air outlet 9 of the large blade 4 is arranged on the outer circumference of the impeller wheel cavity 20 corresponding to the large blade 4, the air outlet 9 is communicated with the rear end of the large semicircular auxiliary cavity 10 through a gradually-releasing-shaped pressure expanding cavity 10 ', a large semicircular cavity 23 is arranged between the large semicircular auxiliary cavity 10 and the small blade 4 ', the radian of the arc-shaped edge of the small blade 4 ' is matched with the arc degree of the wall of a corresponding large semi-circular cavity ring 23 and a tiny airtight gap is kept, the large semi-circular cavity ring 23 enables the cross section of a large semi-circular auxiliary cavity 10 in the shell 1 to be in a C shape with a narrow top and a wide bottom, the large semi-circular auxiliary cavity 10 is in a convergent shape from the rear end forward along the rotation direction of the impeller, an exhaust port 9 ' of the small blade 4 ' is arranged on a wheel cavity 20 at a hollow position between the front end and the rear end of the large semi-circular auxiliary cavity 10, the exhaust port 9 ' is in a gradually-opened line shape and is communicated with an exhaust passage 13 through a gradually-opened expanding cavity 10 ', a plurality of C-shaped spacers 5 which are the same as the cross section of the C-shaped large semi-circular auxiliary cavity 10 are arranged between the large semi-circular cavity ring 23 in the C-shaped auxiliary cavity 10 and the shell 1, and the large semi-circular auxiliary cavity 10 is divided into a plurality of sections of C-shaped auxiliary cavities 10 by the C-shaped spacers 5, the multi-section C-shaped auxiliary cavities 10 are not communicated, the C-shaped upper openings of the multi-section C-shaped auxiliary cavities 10 are spirally arranged on the circumference surface of the wheel cavity 20 corresponding to the top end of the small blade 4 'and are communicated with the wheel cavity 20, the spiral line 25 of the C-shaped upper openings of the C-chen auxiliary cavities 10 is in a tangent opposite-punching acute angle shape along the rotating direction of the small blade 4', namely the rotating direction 24 of the impeller, the C-shaped lower opening of the C-shaped auxiliary cavities 10 is arranged on the side surface of the wheel cavity 20 corresponding to the bottom of the small blade 4 'and is communicated with the wheel cavity 20, the concavo-convex airtight ring 19 on the impeller wheel body 2 is mutually embedded with the concavo-convex airtight ring groove 17 on the inner wheel cavity 20 wall of the wheel cavity 20 surface shell 1 and keeps a micro airtight gap, the large semi-circular auxiliary cavity 10' is also arranged on the side surface of the previous impeller wheel cavity 20 'corresponding to the small blade 4' on the previous impeller in the shell 1, and the air inlet 8 'of the previous impeller is arranged at the center of the side surface of the previous impeller cavity 20' corresponding to the bottom of the previous blade 4, a bearing fixing grating 6 ' is arranged in a front impeller air inlet 8 ' at the center of the side face of the front impeller wheel cavity 20 ', a bearing 11 is arranged at the center of the bearing fixing grating 6 ', an exhaust port 9 of a large blade 4 on the front impeller is arranged on the outer circumference of the impeller wheel cavity 20 ' corresponding to the large blade 4 on the front impeller, the exhaust port 9 of the large blade 4 on the front impeller is communicated with the rear end of a large semi-circular auxiliary cavity 10 ' on the front impeller through a gradually-expanding pressure-expanding cavity 12, a large semi-circular ring cavity 23 ' is arranged between the large semi-circular auxiliary cavity 10 ' on the front impeller and a small blade 4 ' on the front impeller, the radian of the arc-shaped edge of the large semi-circular auxiliary cavity 4 ' on the front impeller is matched with the arc-shaped degree of the wall of the corresponding large semi-circular ring cavity ring 23 ' and a micro air-tight gap is kept, and the large semi-circular ring cavity ring 23 ' enables the cross section of the large semi-circular auxiliary cavity 10 ' of the front impeller in the shell 1 to be in a C shape with a narrow top and wide bottom, the large semi-circular auxiliary cavity 10 'is in a convergent shape from the rear end to the front along the rotation direction of a previous impeller, the exhaust port 9' of a small blade 4 'on the previous impeller is arranged on a wheel cavity 20' at a neutral position between the front end and the rear end of the large semi-circular auxiliary cavity 10 'of the previous impeller, the exhaust port 9' of the small blade 4 'on the previous impeller is in an involute shape and is communicated with a spiral exhaust passage 13' through a gradually-releasing-shaped diffusion cavity 12, the spiral exhaust passage 13 'is communicated with an impeller air inlet 8, a plurality of C-shaped spacers 5' which are the same as the cross section of the large semi-circular auxiliary cavity 10 'in the previous impeller are also arranged between a large semi-circular cavity ring 23' in the large semi-circular auxiliary cavity 10 'and a shell 1, the C-shaped spacers 5' divide the large semi-circular auxiliary cavity 10 'into a plurality of sections of C-shaped auxiliary cavities 10', the plurality of C-shaped auxiliary cavities 10 'are not communicated, and the C-shaped auxiliary cavities 10' are in a C-shaped opening on the C-shaped auxiliary cavity 10 'corresponding to the spiral top end of the small blade 4' in the previous impeller The spiral line 25 of the upper opening of the C-shaped auxiliary cavity 10 'section C is in acute angle opposite punching tangent shape with the rotating direction of the previous impeller small blade 4', namely the rotating direction 24 of the previous impeller, the C-shaped lower opening of the C-shaped auxiliary cavity 10 'is communicated with the side surface of the previous impeller cavity 20' corresponding to the bottom of the previous impeller small blade 4 'and the previous impeller cavity 20', and the concave-convex air-tight ring 19 on the previous impeller wheel body 2 'is mutually embedded with the concave-convex chenchen air-tight ring groove 17 on the wall of the previous impeller cavity 20' in the shell 1 and keeps a micro air-tight gap.

The basic working principle is as follows: when the high-speed impeller works, the power device 6 outputs power to the speed changing device 14 through the power shaft 6 ', the speed changing device 14 outputs power to drive the impellers to rotate through the wheel shaft 3 and inputs power to the next speed changing device 14 at the same time, the next speed changing device 14 outputs power to the wheel shaft 3 ' of the previous impeller to drive the previous impeller to rotate, air in the large blade cavity 7 of the previous impeller generates centrifugal force along with the high-speed rotation of the previous impeller and moves from the bottom of the large blade cavity 7 of the previous impeller, namely the circle center side of the previous impeller, to the centrifugal end, namely the top end of the large blade 4 of the previous impeller along the large blade 4 of the previous impeller under the action of the centrifugal force, the pressure at the bottom of the cavity 7 of the previous impeller is reduced to generate negative pressure, air in the atmosphere enters the air inlet 8 ' of the previous impeller through the bearing fixing grating 6 ' under the action of atmospheric pressure, and along with the high-speed rotation of the previous impeller, the air at the air inlet 8 ' is continuously sucked into the bottom of the cavity 7 of the large blade cavity 7 of the previous impeller by the large blade 7 of the previous impeller The air in the bottom of the cavity 7 of the big blade of the previous impeller is pushed by the big blade 4 of the previous impeller and rotates with the previous impeller to generate centrifugal force, the energy and the speed of the air in the bottom of the cavity 7 of the big blade of the previous impeller rapidly rise, the air with the energy applied by the big blade 4 of the previous impeller moves to the excircle of the previous impeller at high speed along the big blade 4 of the previous impeller under the action of the centrifugal force and gathers at the top end of the big blade 4 of the previous impeller to reduce the speed and increase the pressure, the compressed air after the top pressure increase of the big blade 4 of the previous impeller rotates to the exhaust port 9 of the big blade 4 of the previous impeller and enters the gradually-expanding cavity 12 of the gradually-expanding shape through the exhaust port 9 of the big blade 4 of the previous impeller to reduce the speed and increase the pressure, meanwhile, the air in the bottom of the cavity 7 'of the small blade of the previous impeller is pushed by the small blade 4' of the previous impeller to generate the centrifugal force along the high-speed rotation of the small blade 4 'of the previous impeller, the front small blade moves to the top end of the small blade 4' of the previous impeller under the action of the centrifugal force, the air moving at high speed in the front impeller small blade cavity 7 ' rotates forwards along with the front impeller small blade 4 ' and is thrown away from the top end of the front impeller small blade 4 ' to enter the upper opening of the front C-shaped auxiliary cavity 10 ', negative pressure is generated at the bottom of the front impeller small blade cavity 7 ', the air in the lower opening of the C-shaped auxiliary cavity 10 ' corresponding to the bottom of the front impeller small blade cavity 7 ' at the rear end of the large semi-circular auxiliary cavity 10 ' on the front impeller is sucked into the front impeller small blade cavity 7 ' and rotates forwards along with the front impeller small blade cavity 7 ', the negative pressure generated in the rear end of the large semi-circular auxiliary cavity 10 ' sucks the compressed air in the pressure expansion cavity 12 boosted by the front impeller large blade 4 into the rear end of the large semi-circular auxiliary cavity 10 ', and similarly, the compressed air in the rear end of the large semi-circular auxiliary cavity 10 ' is sucked into the front impeller small blade cavity 7 ' and is thrown away from the front small blade cavity 7 ' at high speed and simultaneously rotates forwards at high speed The top end of the impeller small blade 4 ' enters the upper port of the front section of the C-shaped auxiliary cavity 10 ', compressed air in the upper port of the section of the C-shaped auxiliary cavity 10 ' moves around the cavity ring 23 ' along the cavity wall of the C-shaped auxiliary cavity 10 ' to the lower port of the section of the C-shaped auxiliary cavity 10 ' and is simultaneously decelerated and pressurized, the compressed air after being decelerated and pressurized again in the lower port of the section of the C-shaped auxiliary cavity 10 ' is swept into the front impeller small blade cavity 7 ' again by the front impeller small blade 4 ' which is then rotated into the front impeller small blade cavity 7 ' and is rotated at a high speed along the front impeller small blade cavity 7 ', the compressed air in the upper port of the section of the C-shaped auxiliary cavity 10 ' is again swept into the upper port of the section of the C-shaped auxiliary cavity 10 ' after being energized by the front impeller small blade 4 ', the compressed air in the upper port of the section of the C-shaped auxiliary cavity 10 ' again moves around the cavity ring 23 ' along the wall of the C-shaped auxiliary cavity 10 ' to the lower port of the C-shaped auxiliary cavity 10 ', and the front impeller small cavity 7 ', and the compressed air in the section of the C-shaped auxiliary cavity 10 ' under the push of the front impeller small blade 4 ' by the front impeller small blade 4 ' which is pushed by the front impeller small blade 4 ' which is then moved around the front impeller small blade 4 ' and the front impeller small cavity ring 23 ' The inner part of the cavity 7 of the big blade on the impeller is continuously and spirally pressurized, energy is applied to the cavity 7 'of the small blade of the previous impeller once when compressed air enters the cavity 7' of the small blade of the previous impeller, the compressed air is continuously and repeatedly applied with energy by the small blade 4 'of the previous impeller to form high-energy gas, the high-energy gas is discharged into the diffusion cavity 12 through the exhaust port 9' of the small blade 4 'of the previous impeller to reduce the speed and increase the pressure again, the high-energy gas formed after the reduction and the pressure increase again is discharged into the air inlet 8 of the impeller through the exhaust port 13' of the previous impeller, meanwhile, the air in the cavity 7 of the big blade on the impeller generates centrifugal force along with the high-speed rotation of the impeller and moves from the bottom of the cavity 7 of the big blade, namely the top end of the big blade 4, along the big blade 4 at the center of the impeller at the side, the pressure of the cavity 7 of the big blade is reduced, the high-energy gas at the air inlet 8 enters the bottom of the cavity 7 of the big blade under the pressure, the high-energy gas in the bottom of the large blade cavity 7 is pushed by the large blade 4 and rotates along with the impeller to generate centrifugal force again, the energy and the speed of the high-energy gas in the bottom of the large blade cavity 7 rise again, the high-energy gas with energy applied by the large blade 4 moves to the excircle of the impeller at high speed along the large blade 4 under the action of the centrifugal force and gathers at the top end of the large blade 4 to reduce the speed and boost the pressure again, the high-energy gas with the boosted top end of the large blade 4 rotates to the exhaust port 9 of the large blade 4 and enters the gradually-releasing type pressure-expanding cavity 10 'through the exhaust port 9 to reduce the speed and boost the pressure, meanwhile, the air in the bottom of the small blade cavity 7' is pushed by the small blade 4 'to generate centrifugal force along with the high-speed rotation of the impeller and moves to the top end of the small blade 4' along the small blade 4 'under the action of the centrifugal force, the air with the high-speed movement in the small blade cavity 7' rotates forwards along with the small blade 4 'and is thrown away from the top end of the small blade 4' and enters the upper opening of the front C-shaped auxiliary cavity 10, the pressure at the bottom of the small blade cavity 7 'is reduced, the air in the lower opening of the C-shaped auxiliary cavity 10 section corresponding to the bottom of the small blade cavity 7' at the rear end of the large semi-circular auxiliary cavity 10 is sucked into the small blade cavity 7 'and rotates forwards along with the small blade cavity 7', the pressure in the rear end of the large semi-circular auxiliary cavity 10 is reduced, the high-energy gas pressurized by the large blade 4 enters the rear end of the large semi-circular auxiliary cavity 10 at a high speed under the action of pressure, similarly, the high-energy gas entering the rear end of the large semi-circular auxiliary cavity 10 is swept into the small blade cavity 7 'by the small blade 4' again and rotates forwards at a high speed along with the small blade cavity 7 ', the high-energy gas rotating at a high speed is accelerated to be thrown away from the top end of the small blade 4' and enters the upper opening of the front C-shaped auxiliary cavity 10 section, the high-energy gas in the upper opening of the C-shaped auxiliary cavity 10 section moves towards the lower opening of the C-shaped auxiliary cavity 10 section along the C-shaped auxiliary cavity 10 surrounding cavity ring 23 and is decelerated and pressurized again, the high-energy gas in the section of the C-shaped auxiliary cavity 10 is swept into the small blade cavity 7 ' again by the small blade 4 ' which is rotated at a high speed again to rotate at a high speed along the small blade cavity 7 ', the high-energy gas is thrown into the upper opening of the section of the C-shaped auxiliary cavity 10 again after being applied with energy by the small blade 4 ', the high-energy gas in the upper opening of the section of the C-shaped auxiliary cavity 10 moves to the lower opening of the C-shaped auxiliary cavity 10 along the wall of the C-shaped auxiliary cavity 10 around the cavity ring 23 again, the high-energy gas in the section of the C-shaped auxiliary cavity 10 is pushed by the small blade 4 ' to perform continuous spiral pressurization movement in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ', the high-energy gas is applied with energy by the small blade 4 ' once when entering the small blade cavity 7 ', the high-energy gas is applied with energy by the small blade 4 ' for multiple times continuously to form ultrahigh-energy gas, and the ultrahigh-energy gas is discharged into the pressure expansion cavity 10 ' through the small blade exhaust port 9 ', is discharged out of the exhaust port 13 after being reduced and pressurized again . As can be seen from the above description, the novel fluid supercharging device in this embodiment is characterized in that the power shaft 6 ″, the impeller, the wheel shaft 3, the previous impeller wheel shaft 3 ', and the speed change device 15 are installed together on the same axis, the previous impeller is installed on the previous impeller wheel shaft 3 ', the impeller is installed on the wheel shaft 3, one end of the wheel shaft 3 is connected with the power shaft 6 ″ through the speed change device 14, the other end of the wheel shaft 3 is connected with the previous impeller wheel shaft 3 ' through the other speed change device 14, the two speed change devices 14 are respectively installed with the speed change control mechanism 15, the impellers and the previous impellers are respectively installed on each other to form a speed change series multi-stage compression structure, when in operation, external air is firstly compressed by the previous impeller for the first stage and then enters the impeller to be compressed for the second stage, so that the number of times for obtaining kinetic energy by the air is increased, the compression stroke of air is lengthened, the exhaust pressure of the output end is further improved, another advantage of the variable-speed series multi-stage compression structure is that the rotating speeds of the front impeller and the rear impeller can be adjusted through the variable-speed control mechanism 15 according to the working requirements of the front impeller and the rear impeller, the matching problem of multi-stage compression is further improved, and the maximum working efficiency is realized.

It can be seen from the description of the above ten embodiments that the spacer 5 in the C-shaped auxiliary chamber 10 in the novel fluid pressure increasing device blocks the flow rate of the compressed gas to decrease the pressure of the gas, and can effectively increase the cycle number of the compressed gas, and effectively increase the pressure of the compressed gas at the output end, the gas inlet 8 is designed on the center of one side of the impeller chamber 20, during operation, each large blade cavity 7 can simultaneously suck the gas through the gas inlet 8, thereby increasing the gas inflow, solving the problem of insufficient gas inflow, and also can provide a relatively higher gas inlet pressure for the following compressed gas impeller, when a multi-shaft design is adopted, the shafts are connected through the speed changing device 14, under the regulation and control of the speed changing control mechanism 15, the work matching between the impellers can reach the optimal state, and the pressure of the gas output from the gas outlet 9 'of the small blade 4' can be effectively increased, the air inlet 8 and the air outlet 9 'are not directly communicated through the C-shaped auxiliary cavity 10 any more, the reverse connection of high-pressure gas at the air outlet 9' is effectively blocked, the concave-convex airtight ring 19 on the impeller wheel body and the concave-convex airtight ring groove 17 on the cavity wall of the impeller wheel cavity effectively reduce the side leakage of the high-pressure gas, the sealing performance of the impeller is further improved, the fixed grid 6 'with the heat dissipation and cooling functions and the radiating fins 21 on the shell effectively reduce the damage of the bearing 11 and the power device 6 caused by high temperature, the service life of the whole machine is prolonged, the novel fluid supercharging device is also provided with a unique tongue piece 26 design, when the pressure of the air outlet 9' of the small blade 4 'is higher, the compressed air in the large blade cavity 7 can only enter the upper opening of the C-shaped auxiliary cavity 10 in front of the air outlet 9' of the small blade 4 'and can be spirally supercharged and circulated in the C-shaped auxiliary cavity 10 and the small blade cavity 7' until the air outlet 9 'of the small blade 4' is exhausted, when the pressure of the small blade 4 'exhaust port 9' is lower, the compressed air in the large blade cavity 7 can enter the upper opening of the C-shaped auxiliary cavity 10 and the small blade 4 'exhaust port 9' at the same time, so that part of the compressed air in the large blade cavity 7 can directly enter the small blade 4 'exhaust port 9' to be discharged without spiral pressurization circulation in the C-shaped auxiliary cavity 10 and the small blade cavity 7 ', the air displacement during low-pressure work is increased, the air displacement of the large blade cavity 7 discharged into the C-shaped auxiliary cavity 10 can be automatically adjusted during high-pressure work, the automatic matching of the air displacement and the pressure between the large blade 4 and the small blade 4' is realized, and the working efficiency of the impeller is further improved.

The present application is not limited to the above ten embodiments, the above ten embodiments are only the most basic examples of the implementation of the present novel fluid pressurization device, the structures in the above ten embodiments can be interchanged or not, and are transformed to form a new structural form, and an auxiliary mechanism can be reduced appropriately, for example, the fifth embodiment is formed by adding a speed changing device, and can be arbitrarily superimposed, for example, the seventh embodiment describes that two impellers are installed in the housing in a coaxial series manner, that is, a previous impeller is superimposed in front of the first impeller, similarly, the front of the first impeller can be fully superimposed with the previous impeller, a previous second impeller, a previous third impeller, a previous fourth impeller, a previous fifth impeller, and so on, and can also be infinitely superimposed with a plurality of impellers, that is, the present novel fluid pressurization device can be implemented by not only one impeller, but also by a plurality of impellers being superimposed in series, the structure can also be realized by a plurality of impellers in a parallel and superposed structure, the structure of the plurality of impellers can be a coaxial connection structure or a split-shaft variable-speed connection structure, for example, the seventh embodiment, with the addition of the speed changing device 14, is transformed into the tenth embodiment, and the impeller is not limited to one form of impeller structure, but may be a hybrid structure formed by various forms of impellers, for example, the fifth, sixth and eighth embodiments are implemented in a mixed structure, and similarly, the structure of the tongue piece 26 in the ninth embodiment can also be applied to other embodiments to form a new structure, and in summary, the structures in the ten embodiments of the present invention can be interchanged and changed as needed, the number of impellers can be appropriately reduced or can be appropriately superimposed, the above ten embodiments are all within the scope of protection of the present application in terms of the purchasing interchange and the appropriate form of construction, both omitted and superimposed.

Claims (10)

1. The novel fluid supercharging device is mainly composed of a shell, an impeller and an axle, wherein an impeller wheel cavity is arranged in the shell, an air inlet and an air outlet are formed in the impeller wheel cavity, the impeller is installed in the impeller wheel cavity in the shell, the impeller is composed of blades and an impeller body, the axle is installed in the center of the impeller wheel body, a support bearing is installed on the axle, the size of the impeller wheel cavity is matched with the rotation shape of the impeller, and the fluid supercharging device is characterized in that: the impeller is characterized in that a wheel sheet is arranged on the circumferential surface of the impeller wheel body, the wheel sheet divides the circumferential surface of the wheel body into a large circumferential surface and a small circumferential surface, the circumferential surfaces of the two parts of the wheel body are in opposite inner arc shapes, blades on the impeller are composed of large blades and small blades, the large blades and the small blades are in narrow-top and wide-bottom shapes, the large blades are arranged on the large circumferential surface, the small blades are arranged on the small circumferential surface, the top edges of the large blades, the top edges of the small blades and the top edges of the wheel sheet keep non-contact sealing gaps with the narrowest parts of the inner walls of the corresponding impeller wheel cavities, a large semi-circular auxiliary cavity is arranged outside the impeller wheel cavity corresponding to the small blades in the shell and communicated with the wheel cavity, the large semi-circular auxiliary cavity in the shell is wrapped on the impeller wheel cavity corresponding to the small blades except the peripheries of the exhaust ports, and the impeller and the wheel cavity keep micro air-tight gaps from contacting with the wall of the wheel cavity, a large semicircular annular cavity ring is arranged between the large semicircular auxiliary cavity and the wheel cavity, the diameter of the large semicircular annular cavity ring is smaller than that of the large semicircular auxiliary cavity, the cross section of the large semicircular annular cavity ring is matched with the radian of the axial side edge of the corresponding small blade and keeps a non-contact sealing gap, the cross section of the large semicircular annular auxiliary cavity is C-shaped, the upper opening of the auxiliary cavity with the C-shaped cross section corresponds to the top edge of the small blade, the lower opening of the auxiliary cavity with the C-shaped cross section corresponds to the bottom edge of the small blade, the auxiliary cavity with the C-shaped cross section and the cavity of the small blade form an annular channel with the large semicircular cavity ring as an inner ring shaft, the exhaust port is of an involute structure from the impeller cavity to the outside along the rotation direction of the impeller on the impeller wheel cavity corresponding to the top end of the small blade, the exhaust port is communicated with the impeller cavity inwards and communicated with the exhaust port outwards, and the air inlet is arranged on the center of the side surface of the impeller cavity corresponding to the bottom edge of the large blade, the impeller wheel cavity corresponding to the top end of the large blade is of an involute structure along the rotation direction of the impeller, the tail end of the impeller wheel cavity, namely the maximum end, extends over the exhaust port and is communicated with the upper opening of the C-shaped auxiliary cavity corresponding to the top end of the small blade, and the axial width of the impeller wheel cavity corresponding to the top end of the small blade is gradually reduced from the exhaust port to the other end along the rotation direction of the impeller until the exhaust port is of a convergent structure.

2. The novel fluid pressurization device of claim 1, wherein: the large semi-circular auxiliary cavity is internally provided with a plurality of C-shaped spacers matched with the cross section of the large semi-circular auxiliary cavity, the C-shaped spacers divide the large semi-circular auxiliary cavity into a plurality of C-shaped auxiliary cavity sections, the bottoms of the C-shaped auxiliary cavity sections, namely centripetal ends, correspond to cavities at the bottoms of the small blades and are communicated with the bottoms of the small blade cavities of the small blades through impeller cavities, the tops of the C-shaped auxiliary cavity sections, namely centrifugal ends, are arranged on the outer circular surface of the impeller cavities and are communicated with the small blade cavities at the tops of the small blades through the impeller cavities, when the side edges of the small blades correspond to the spacers in the large semi-circular auxiliary cavity, the small blade cavities and the C-shaped auxiliary cavity sections form a spiral channel taking a large semi-circular cavity ring as a shaft, the exhaust port is arranged on the outer circular surface of the impeller cavity above the tops corresponding to the bottoms of the thinnest ends, namely the bottoms of the spiral large semi-circular auxiliary cavity ring cavity, and the cross section of the large semi-circular auxiliary cavity ring is not concentric with the cross section of the large semi-circular auxiliary cavity, the large semi-circular cavity is offset in the large semi-circular auxiliary cavity to make the cross section of the large semi-circular auxiliary cavity in a C shape with a narrow top and a wide bottom, the C-shaped auxiliary cavity with the narrow top and the wide bottom is a large semi-circular auxiliary cavity formed by a plurality of sections, the air outlet is a thin end and is in a spiral structure, namely, the spiral large semi-circular structure is gradually enlarged from the air outlet to the other end along the rotation direction of the impeller, and a spiral line rotating from the tail end, namely the maximum end to the thin end is tangent to the narrowest position of the upper opening of the C-shaped auxiliary cavity with the narrow top and the wide bottom and is in an acute angle hedging shape along the rotation direction of the impeller.

3. The novel fluid pressurization device of claim 1, wherein: a plurality of impellers are arranged in the shell and respectively arranged in respective impeller cavities, the impellers are jointly arranged on the same wheel shaft, and the air outlets of the front impeller cavities and the air inlets of the back impeller cavities in the impeller cavities are connected in series to form a multi-section type supercharging structure.

4. The novel fluid pressurization device of claim 1, wherein: the impeller structure is characterized in that a plurality of impellers are arranged in respective impeller cavities in the shell, the impellers are arranged on different wheel shafts, the different wheel shafts are connected through a speed change device, the speed change device is provided with a speed change control mechanism and a sealing device, and front impeller cavity air outlets and rear impeller cavity air inlets in the impeller cavities are connected in series to form a multi-section series-connection speed change pressurization structure.

5. The novel fluid pressurization device of claim 1, wherein: the large blade and the small blade on the impeller are respectively formed by a long blade and a short blade at intervals, and the tail end of the blade, namely a centrifugal end, is a sweepback middle section S twisted centripetal end which is a three-dimensional flow structure extending along the axial direction of a shovel-shaped undercut wing angle.

6. The novel fluid pressurization device of claim 1, wherein: the large blade and the small blade on the impeller are formed by mutually arranging long blades and short blades at intervals, and the tail end of each blade, namely the sweepforward middle section of the centrifugal section, is a three-dimensional flow structure with a C-shaped twisted centripetal end and a lateral extending forward side wing angle.

7. The novel fluid pressurization device of claim 1, wherein: the large blade and the small blade are of open structures, namely the axial outer long edge is not blocked by the wheel sheet.

8. The novel fluid pressurization device of claim 1, wherein: the large blade and the small blade are in a semi-closed structure, namely, the axial outer long edge is blocked by a wheel sheet.

9. The novel fluid pressurization device of claim 1, wherein: the top end of the impeller blade is longer than the top ends of the large blade and the small blade, the long part of the impeller blade extends into the groove at the top end of the impeller cavity, and the large blade and the small blade are kept in a sealing gap without contact.

10. The novel fluid pressurization device of claim 1, wherein: the small blades and the large blades are in a radial shape at the top ends, namely centrifugal ends, and are in an edge-to-edge side-by-side integrated structure, the wheel sheet is in a split structure with a plurality of independent units between two radially adjacent blades, the bottom edges of the wheel sheet between the two radially adjacent blades are in movable shaft connection with the end surface of the wheel body in contact, the top edges of the wheel sheet are in axial free sliding in the distance between the axial surface widths of the large blades and the small blades by taking the bottom edges as a shaft and taking the surfaces of the two radially adjacent blades as sliding edges to form movable tongue sheets, the shapes of the movable tongue sheets are matched with the cross section of a cavity between the two radially adjacent blades, the two radial edges of the movable tongue sheets respectively keep relative sliding seal with the corresponding surfaces of the two radially adjacent blades, when the movable tongue sheets slide to any one of the two axial sides, the axial top edges of the movable tongue sheets form relative contact seal with the contact surfaces, and the axial end surfaces of the wheel body of the impeller are provided with concave-convex airtight rings, convex-concave airtight ring grooves are formed in the wall of the inner cavity of the shell corresponding to the concave-convex airtight rings on the impeller wheel body, and the concave-convex airtight rings on the impeller wheel body are mutually embedded with the convex-concave airtight ring grooves in the wall of the inner cavity of the shell to keep a tiny airtight gap.

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