Compressor impeller assembly and shockwave compressor

Abstract

The application provides a compressor impeller assembly and a shock wave compressor, and belongs to the technical field of gas compression. The compressor impeller assembly comprises a compression impeller, a centrifugal impeller and a main shaft. The compression impeller is provided with a speed reduction air channel, the speed reduction air channel extends from the outer edge of the compression impeller to the shaft hole, the airflow direction of the speed reduction air channel is opposite to the rotation direction of the compression impeller, the speed reduction air channel is used for supplying the high-speed airflow after shock wave compression to enter the speed reduction air channel from the outer edge of the compression impeller to slow down, and high-pressure airflow is formed at the shaft hole of the compression impeller. The centrifugal impeller is coaxial with the compression impeller and abuts against the compression impeller. The centrifugal impeller is provided with a speed increase air channel, the speed increase air channel extends from the shaft hole of the centrifugal impeller to the outer edge, and is used for supplying the high-pressure airflow to enter the speed increase air channel from the shaft hole of the centrifugal impeller and to be thrown out from the outer edge of the centrifugal impeller. The application realizes two-stage compression through the compression impeller and the centrifugal impeller, so that the industrial gas demand is met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of gas compression, and particularly relates to a compressor impeller assembly, and further relates to a shock wave compressor. BACKGROUND

[0002] An air compressor is a mechanical device for compressing air to increase the pressure of the gas and conveying the gas, and is also a conversion device for converting mechanical energy supplied by a prime mover into pressure energy of the gas.

[0003] There are many types of existing air compressors, which can be divided into positive displacement compressors and velocity compressors according to working principles. The working principle of the positive displacement compressor is to increase the density of gas molecules in a unit volume by changing the volume of the working volume, thereby increasing the pressure of the compressed air. The working principle of the velocity compressor is to increase the movement speed of the gas molecules, so that the kinetic energy possessed by the gas molecules is converted into pressure energy of the gas, thereby increasing the pressure of the compressed air.

[0004] The moving parts of the positive displacement compressor all have friction pairs, so there are certain problems in lubrication, sealing and mechanical loss, and the volume, weight and noise are also large, and maintenance, movement and transportation are not convenient. Although the velocity compressor is small in size and simple in structure, it requires high manufacturing precision, and the rotation speed is limited due to the influence of the shock wave resistance of air when the blade rotates at high speed, and the operation efficiency is also low.

[0005] Therefore, a shock wave compressor has appeared in the prior art. These compressors use the principle of shock wave to achieve air compression, and are generally referred to as supersonic compressors or shock wave compressors. Compared with traditional compressors, the shock wave compressor has higher operation efficiency, and has incomparable advantages under the condition of high single-stage pressure ratio requirement.

[0006] In the process of implementing the present application, the inventor found that the above-mentioned existing shock wave compressor at least has the following defects:

[0007] The existing shock wave compressor generates a shock wave wall through a rotating ramjet rotor with a shock wave inducing block, so that the supersonic airflow is rapidly increased in pressure after passing through the shock wave wall, thereby improving the compression efficiency. However, the one-stage compression structure cannot effectively increase the pressure, so that it cannot meet the demand of industrial gas. SUMMARY

[0008] Based on the above background problems, the present application aims to provide a compressor impeller assembly which performs two-stage compression through a compression impeller and a centrifugal impeller, thereby meeting the demand of industrial gas. Another object of the present application is to provide a shock wave compressor.

[0009] To achieve the above-mentioned objects, on the one hand, the technical scheme provided by the embodiments of the present application is:

[0010] The compressor wheel assembly comprises:

[0011] The compression wheel is provided with a deceleration air channel extending from the outer edge of the compression wheel to the shaft hole, and the airflow direction of the deceleration air channel is opposite to the rotation direction of the compression wheel, for supplying the high-speed airflow after shock wave compression to enter the deceleration air channel from the outer edge of the compression wheel to slow down, and form high-pressure airflow at the shaft hole of the compression wheel.

[0012] The centrifugal wheel is coaxially abutted with the compression wheel, and the centrifugal wheel is provided with an acceleration air channel extending from the shaft hole of the centrifugal wheel to the outer edge, for supplying the high-pressure airflow to enter the acceleration air channel from the shaft hole of the centrifugal wheel and be thrown out from the outer edge of the centrifugal wheel.

[0013] The main shaft is arranged in the compression wheel and the centrifugal wheel, and is connected with the power mechanism to drive the compression wheel and the centrifugal wheel to rotate synchronously.

[0014] Further, the main shaft is provided with an air passage on the outer periphery, and the air passage is communicated with the shaft hole of the compression wheel and the shaft hole of the centrifugal wheel, so that the high-pressure airflow formed at the shaft hole of the compression wheel can enter the acceleration air channel through the shaft hole of the centrifugal wheel.

[0015] Further, the air inlet end of the deceleration air channel is provided with a flow limiting piece, which is a baffle type or a valve type, so that when the rotation speed of the compression wheel reaches the set rotation speed, the flow limiting piece is opened to introduce airflow.

[0016] Further, the compressor wheel assembly further comprises:

[0017] The wheel cover is used to form a sealed structure with the compression wheel.

[0018] Further, the compressor wheel assembly further comprises:

[0019] The air outlet conduit is communicated with the wheel cover at one end, and is used to be slidably connected with the gas storage mechanism at the other end, for outputting the compressed airflow output by the acceleration air channel to the gas storage mechanism.

[0020] Further, the deceleration air channel is provided with at least two groups, and the air outlet ends of the multiple groups of deceleration air channels are connected at the shaft center of the compression wheel; the acceleration air channel is provided with at least two groups, and the air inlet ends of the multiple groups of acceleration air channels are connected at the shaft center of the centrifugal wheel.

[0021] On the other hand, the embodiment of the present application provides a shock wave compressor, which comprises a shell, a power mechanism, a gas storage mechanism, a control mechanism and the above-mentioned compressor wheel assembly.

[0022] Further, the power mechanism comprises a motor, which is a three-phase brushless non-inductive high KV value high-speed DC motor or a three-phase brushless non-inductive high-voltage DC motor.

[0023] The KV value of the three-phase brushless non-inductive high KV value high-speed DC motor is greater than 1000, and the rotating speed is 50000-100000r / min, and the voltage of the three-phase brushless non-inductive high-voltage DC motor is 100-380V.

[0024] Further, the gas storage mechanism comprises:

[0025] A gas storage tank, which is an integrated structure or a detachable split structure, is provided with a one-way valve plate at the gas inlet of the gas storage tank.

[0026] A multi-way joint is connected at the gas outlet of the gas storage tank, and the multi-way joint is provided with a gas pressure gauge and a quick connector.

[0027] Further, the control mechanism comprises:

[0028] A controller is electrically connected with the power mechanism.

[0029] A pressure sensor is arranged at the multi-way joint and is in communication connection with the controller, and is used for monitoring the gas pressure value in the gas storage tank, so that the power mechanism is controlled to respond when the set pressure value is different from the measured value monitored by the pressure sensor.

[0030] Compared with the prior art, the embodiment of the present application has at least the following effects:

[0031] 1、The compressor impeller assembly of the present application comprises a compression impeller and a centrifugal impeller, the high-speed gas flow after shock wave compression can enter the deceleration air channel from the outer edge of the compression impeller to decelerate, and form a relatively static high-pressure gas flow at the axial hole of the compression impeller, and then the relatively static high-pressure gas flow can enter the acceleration air channel from the axial hole of the centrifugal impeller and be thrown out from the outer edge of the centrifugal impeller, so as to form a high-speed compressed gas flow, that is, the present application realizes two-stage compression through the compression impeller and the centrifugal impeller, so that the pressure can meet the demand of industrial gas.

[0032] 2、The present application is provided with a flow limiting piece at the gas inlet end of the deceleration air channel, which is a baffle type or a valve type, on the one hand, when the rotating speed of the compression impeller reaches the set rotating speed, the flow limiting piece is opened to introduce the gas flow, so as to avoid that the baffle type flow limiting piece generates resistance to affect the rotation when the compression impeller rotates in the early stage, on the other hand, the opening angle of the baffle type flow limiting piece or the opening degree of the valve type flow limiting piece can be adjusted to adjust the gas inlet amount and the gas delivery amount.

[0033] 3、The compressor impeller assembly of the present application further comprises an impeller cover and an air outlet pipe, so that the generated compressed gas flow can be directional delivered.

[0034] 4. The gas storage mechanism of the shock compressor of the present invention includes a gas storage tank. The gas storage tank can be an integral structure or a detachable split structure. When the gas storage tank is a split structure, it can be connected to a tank of any size as needed, making it more flexible to use. When it is for the purpose of reducing weight and making it easier to carry, it can also be used directly by connecting the gas pipe without connecting the storage tank.

[0035] 5. The shockwave compressor of the present invention has a simple structure and small size. Because there is no friction pair, it has the advantage of high compression efficiency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0037] Figure 1 This is a front view of the compressor impeller assembly in Embodiment 1 of the present invention;

[0038] Figure 2 This is a right view of the compressor impeller assembly in Embodiment 1 of the present invention;

[0039] Figure 3 This is a front sectional view of the compressor impeller assembly in Embodiment 1 of the present invention;

[0040] Figure 4 This is a schematic diagram of the compression impeller in Embodiment 1 of the present invention;

[0041] Figure 5 This is a structural schematic diagram of the compression impeller in Embodiment 1 of the present invention from another perspective;

[0042] Figure 6 This is a schematic diagram of the centrifugal impeller in Embodiment 1 of the present invention;

[0043] Figure 7 This is a schematic diagram of the centrifugal impeller from another perspective in Embodiment 1 of the present invention;

[0044] Figure 8 This is a front view of the spindle in Embodiment 1 of the present invention;

[0045] Figure 9 This is a top sectional view of the main shaft in Embodiment 1 of the present invention;

[0046] Figure 10 This is a schematic diagram illustrating the working principle of the compression impeller in Embodiment 1 of the present invention;

[0047] Figure 11 This is a schematic diagram illustrating the working principle of the centrifugal impeller in Embodiment 1 of the present invention;

[0048] Figure 12 This is a schematic diagram of the shock compressor in Embodiment 2 of the present invention;

[0049] Figure 13 The figure is a main view of the shock wave compressor in the embodiment 2 of the present application.

[0050] Figure 14 The figure is a structure diagram of the gas storage tank in the embodiment 2 of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0052] In the description of the present application, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings of the specification, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0053] In order to solve the problem that the existing shock wave compressor cannot effectively increase the pressure by adopting a one-stage compression structure, the present application adopts a compression impeller and a centrifugal impeller for two-stage compression, so as to meet the industrial gas demand.

[0054] Next, the technical scheme of the present application will be described through specific embodiments.

[0055] Embodiment 1

[0056] The compressor impeller assembly, as shown in the figure, comprises a compression impeller 101, a centrifugal impeller 102 and a main shaft 103, and the compression impeller 101 and the centrifugal impeller 102 are coaxially sleeved on the main shaft 103. Figures 1-3 In the present embodiment, the compression impeller 101 is used to slow down the high-speed airflow compressed by the shock wave to form a relatively static high-pressure airflow, and for this purpose, as shown in the figure,

[0057] Figure 4 ​As shown, the embodiment is provided with a speed reduction air channel 101-1 on the compression impeller 101, the speed reduction air channel 101-1 extends from the outer edge of the compression impeller 101 to the axial hole, and the extension direction of the speed reduction air channel 101-1 is opposite to the rotation direction of the compression impeller 101, so that the high-speed airflow can enter the speed reduction air channel 101-1 from the outer edge of the compression impeller 101 to slow down, and form a relatively static high-pressure airflow at the axial hole of the compression impeller 101.

[0058] For the specific structure of the compression impeller 101, the embodiment gives the following specific examples:

[0059] As shown in Figure 4 and 5 , the compression impeller 101 of the embodiment is a cylindrical structure, and the two end faces of the compression impeller 101 are respectively inwardly recessed to form cavity I 101-2 and cavity II 101-3.

[0060] As shown in Figure 4 , the cavity I 101-2 is provided with the speed reduction air channel 101-1, one end of the speed reduction air channel 101-1 at the outer edge of the compression impeller 101 is the air inlet end, and the other end of the speed reduction air channel 101-1 extending to the axial hole of the compression impeller 101 is the air outlet end.

[0061] Specifically, the speed reduction air channel 101-1 of the embodiment is formed by setting vertical plates perpendicular to the bottom wall of the cavity I 101-2 in the cavity I 101-2, and the gap between the two vertical plates forms the speed reduction air channel 101-1; the embodiment also sets the vertical plates flush with the surface of the compression impeller 101, so that the vertical plates can abut against the impeller front end cover 104 described later, thereby limiting the airflow to enter only from the air inlet end of the speed reduction air channel 101-1.

[0062] In order to ensure the air intake of high-speed airflow, the embodiment is provided with multiple groups of speed reduction air channels 101-1, the multiple groups of speed reduction air channels 101-1 are annularly and uniformly distributed around the axial hole of the compression impeller 101, and the air outlet ends of the multiple groups of speed reduction air channels 101-1 are connected at the axial hole of the compression impeller 101.

[0063] In addition, in order to prolong the path of high-speed airflow, as shown in Figure 4 , the embodiment sets the speed reduction air channel 101-1 to be arc-shaped.

[0064] It should be noted that the structure of the compression impeller 101 is not limited to this, in other embodiments, a groove can also be directly opened on one end face of the compression impeller 101, and the groove is the speed reduction air channel 101-1.

[0065] As shown in Figure 4 and 5As shown, the intake end of the deceleration air passage 101-1 is also provided with a flow limiting piece 101-4, which is in the form of a baffle in this embodiment, i.e., the flow limiting piece 101-4 is movably connected to the intake end of the deceleration air passage 101-1.

[0066] When the rotating speed of the compression impeller 101 has not reached the set rotating speed, the baffle-type flow limiting piece 101-4 is not opened, so that the angle of attack and the windward area are small, thereby reducing the rotating resistance of the compression impeller 101, and further achieving the effect of saving energy; when the rotating speed of the compression impeller 101 increases to the set rotating speed, the baffle-type flow limiting piece 101-4 is flung open under the action of centrifugal force, thereby introducing gas. In actual application, the intake amount and the gas delivery amount can also be adjusted by controlling the opening angle of the baffle-type flow limiting piece 101-4.

[0067] It should be noted that in other embodiments, the flow limiting piece 101-4 can also be in the form of a valve, which is controlled to be closed when the compression impeller 101 is initially rotated, and is controlled to be opened when the rotating speed of the compression impeller 101 increases to the set rotating speed, thereby introducing gas.

[0068] In this embodiment, the centrifugal impeller 102 is used to change the relatively static high-pressure gas flow at the shaft hole into a high-speed gas flow. To this end, as shown in Figure 6 , this embodiment is provided with a speed-up air passage 102-1 on the centrifugal impeller 102, so that the high-pressure gas flow at the shaft hole of the compression impeller 101 can enter the speed-up air passage 102-1 from the shaft hole of the centrifugal impeller 102 and be flung out from the outer edge of the centrifugal impeller 102 to become a high-speed compression gas flow.

[0069] For the specific structure of the centrifugal impeller 102, this embodiment gives the following examples:

[0070] As shown in Figure 3 , the centrifugal impeller 102 is coaxially abutted with the compression impeller 101 and is fixed with the compression impeller 101 by screws, and specifically, the centrifugal impeller 102 is abutted with the bottom wall of the cavity II 101-3 of the compression impeller 101, i.e., the centrifugal impeller 102 is arranged in the cavity II 101-3 of the compression impeller 101.

[0071] Specifically as shown in Figure 6 and 7 , the centrifugal impeller 102 of this embodiment is also in the form of a cylinder, and one end face of the centrifugal impeller 102 is inwardly recessed to form a cavity III 102-2, as shown in Figure 3 , the cavity III 102-2 is oppositely arranged with the cavity II 101-3.

[0072] As shown in Figure 6As shown, the embodiment is provided with a plurality of arc-shaped speed-increasing air passages 102-1 on the cavity III 102-2, the plurality of speed-increasing air passages 102-1 all start from the shaft hole of the centrifugal impeller 102 and end at the outer edge of the centrifugal impeller 102, that is, the air inlet end of the plurality of speed-increasing air passages 102-1 is connected at the shaft hole of the centrifugal impeller 102.

[0073] Similarly, the speed-increasing air passage 102-1 of the embodiment is formed by setting vertical plates on the cavity III 102-2, the gap between the two vertical plates forms the speed-increasing air passage 102-1, but the formation of the speed-increasing air passage 102-1 is not limited thereto.

[0074] In the embodiment, as shown in Figure 3 , the main shaft 103 is arranged through the compression impeller 101 and the centrifugal impeller 102, which is used to be connected with the power mechanism to drive the compression impeller 101 and the centrifugal impeller 102 to rotate synchronously.

[0075] In order to transport the high-pressure air flow formed at the shaft hole of the compression impeller 101 to the shaft hole of the centrifugal impeller 102, as shown in Figure 3 , 8 , 9, the embodiment is provided with a through air groove 103-1 on the outer periphery of the main shaft 103, the setting position of the air groove 103-1 corresponds to the position of the shaft hole of the compression impeller 101 and the centrifugal impeller 102, so that the shaft hole of the compression impeller 101 and the centrifugal impeller 102 can be connected through the air groove 103-1, thereby realizing the transportation of the air flow.

[0076] In addition, as shown in Figure 3 and 9 , the embodiment is also provided with a hollow shaft, and the air groove 103-1 is through the hollow cavity of the main shaft 103.

[0077] The working principle of the impeller assembly of the embodiment is shown in Figure 10 and 11 .

[0078] The compression impeller 101 and the centrifugal impeller 102 rotate at high speed under the drive of the main shaft 103. When the rotation speed of the compression impeller 101 and the centrifugal impeller 102 increases to approach the linear speed of the baffle type flow limiting piece 101-4 close to the speed of sound or supersonic speed, the external airflow will impact the flow limiting piece 101-4 to generate a strong shock wave pressure, and the external vortex flow will be impacted into the deceleration air passage 101-1 from the inlet of the deceleration air passage 101-1, so that the gas pressure is greatly increased. The theoretical basis is that according to the characteristics of the shock wave, the wave resistance is actually a kind of pressure difference resistance. When the speed of the object is close to the speed of sound (or supersonic speed), the resistance changes sharply, and the resistance is inversely proportional to the square root of the Mach number, which means that the closer to the speed of sound, the greater the resistance, and the gas pressure will rise.

[0079] When the airflow in the deceleration air passage 101-1 gradually approaches the shaft hole, the flow rate of the airflow in the deceleration air passage 101-1 continuously decreases (almost zero at the shaft hole), and the gas pressure is further increased, and finally a relatively static high-pressure airflow is formed at the shaft hole of the compression impeller 101.

[0080] At this time, the high-pressure airflow at the shaft hole of the compression impeller 101 is brought into the acceleration air passage 102-1 from the inlet of the acceleration air passage 102-1 by the centrifugal impeller 102 rotating at high speed through the air passage 103-1, and the airflow is thrown out from the outlet of the acceleration air passage 102-1. In this process, the high-pressure airflow continuously obtains the rotation energy of the centrifugal impeller 102, the flow rate continuously increases, a high-speed compressed gas is formed, and flows into the cavity between the centrifugal impeller 102 and the cavity II 101-3, forming a high-speed compressed airflow, which can meet the demand of industrial gas.

[0081] In addition, the impeller assembly of the embodiment is compressed by the compression impeller 101 and the centrifugal impeller 102 in two stages, so that even if the shock wave compression does not occur due to insufficient rotation speed, the two-stage superimposed pressure can meet the demand of 0.8 MPa of industrial gas.

[0082] In order to further limit the flow direction of the airflow, as shown in Figure 1 and 3 The compressor impeller assembly of the embodiment further comprises an impeller front end cover 104, an impeller rear end cover 105 and an air outlet pipe 106.

[0083] In the embodiment, the impeller front end cover 104 and the impeller rear end cover 105 cooperate with the compression impeller 101 to form a sealed structure.

[0084] Specifically, as shown in Figure 3 The impeller front end cover 104 is connected to one end of the cavity I 101-2 of the compression impeller 101, and the impeller rear end cover 105 is connected to one end of the cavity II 101-3 of the compression impeller 101. At this time, a gap is provided between the end of the main shaft 103 and the impeller rear end cover 105.

[0085] The compression impeller 101 is fixed to the front end cover 104 and the rear end cover 105 of the impeller by screws, and the contact surfaces of the compression impeller 101 with the front end cover 104 and the rear end cover 105 of the impeller are coated with sealant to ensure sealing.

[0086] In this embodiment, one end of the outlet pipe 106 is connected to the impeller rear end cover 105, and the other end is used to slide and connect with the gas storage mechanism, so as to supply the compressed air flow output from the speed-increasing air passage 102-1 to the gas storage mechanism for storage.

[0087] Specifically, in this embodiment, the exhaust pipe 106 is located at the axis of the impeller rear end cover 105 and is fixed to the impeller rear end cover 105. That is, in this embodiment, the exhaust pipe 106 rotates synchronously with the compression impeller 101, the centrifugal impeller 102, the impeller front end cover 104, and the impeller rear end cover 105.

[0088] The compressor impeller assembly of this embodiment, through the cooperation of the above structures, can output the shock wave airflow after the compression impeller 101 decelerates it and the centrifugal impeller 102 accelerates it. The pressure of the output compressed airflow can be as high as the commonly used 0.8MPa. Because the faster the rotation speed of the compression impeller 101 and the centrifugal impeller 10, the higher the pressure of the output compressed airflow, the pressure of the output compressed airflow can be adjusted as needed.

[0089] It should also be noted that the compressor impeller assembly of this embodiment can be used not only for air compression, but also for compression of other gases.

[0090] Example 2

[0091] shock compressors, such as Figure 12 and 13 As shown, it includes: housing 2, power mechanism 3, gas storage mechanism 4, control mechanism 5, and compressor impeller assembly of Example 1.

[0092] In this embodiment, the housing 2 has an L-shaped structure, so as to... Figure 1 For example, a notch is recessed at the upper right side of the housing 2 for installing the power supply 6 (described later), making the entire compressor structure more compact. However, the shape of the housing 2 is not limited to this; in other embodiments, rectangular, cylindrical, or other structures can be used instead. A support pad 201 is also fixed to the lower surface of the housing 2, which provides support and shock absorption.

[0093] In this embodiment, as Figure 13As shown, the power mechanism 3 is arranged in the casing 2, and the power mechanism 3 of the embodiment is an electric motor, which can be a three-phase (three-wire) brushless non-inductive high KV value high-speed DC motor, the KV value of which is greater than 1000, and the rotating speed range is 50000-100000 r / min, or a brushless inductive high-speed high-power DC motor, or a three-phase (three-wire) brushless non-inductive high-voltage DC motor, the voltage range of which is 100-380 V, or other related high-speed DC motors (series excited motors), or various high-power high-speed AC motors, preferably the three-phase (three-wire) brushless non-inductive high KV value high-speed DC motor and the three-phase (three-wire) brushless non-inductive high-voltage DC motor.

[0094] In order to support and fix the power mechanism 3, the embodiment is provided with a motor support frame 201 in the casing 2, as shown in Figure 13 The longitudinal section of the motor support frame 201 is in L-shaped structure, and the bottom thereof is fixed on the bottom wall of the casing 2 by screws, at this time, the power mechanism 3 is fixed between the motor support frame 201 and the end of the casing 2; in order to facilitate heat dissipation of the power mechanism 3, a through hole is formed on the end of the casing 2 at a position corresponding to the power mechanism 3.

[0095] The output end of the power mechanism 3 is connected with the main shaft 103 of the compressor impeller assembly, that is, the output shaft of the motor is connected with the main shaft 103, and in the embodiment, the output shaft of the motor is connected with the main shaft 103 through a connecting sleeve 301, specifically, the connecting sleeve 301 is sleeved on the output shaft of the motor, and the connecting sleeve 301 extends into the hollow cavity of the main shaft 103.

[0096] It should be noted that the connection mode of the motor and the main shaft 103 is not limited to the hard connection mode of the connecting sleeve 301 in the embodiment, and in other embodiments, a soft connection mode such as rubber or a clutch connection mode can also be adopted, the power connection can be cut off by the clutch when not working or on standby, and the clutch is connected when starting, so that the starting is more rapid and energy can be saved; in addition, the motor and the main shaft 103 can also be connected in a gear transmission or belt transmission mode to achieve the functions of speed increasing or speed reducing.

[0097] When the power mechanism 3 drives the impeller assembly to rotate, in order to ensure the stability of the rotation of the impeller assembly, the embodiment is also provided with an impeller support frame 202 in the casing 2, as shown in Figure 13 The top end of the impeller support frame 202 is fixed with two groups of bearings 203, and the two groups of bearings 203 are each provided with a bearing locking cover, at this time, the main shaft 103 of the compressor impeller assembly is arranged on the bearings 203, so as to support the impeller assembly.

[0098] In the embodiment, as shown in Figure 12 and13 As shown, the gas storage mechanism 4 includes a gas storage tank 401 and a multi-port connector 402.

[0099] The gas storage tank 401 is located inside the housing 2 and extends out of the housing 2. However, the arrangement of the gas storage tank 401 is not limited to this. In other embodiments, the gas storage tank 401 can also be directly fixed to the end of the housing 2.

[0100] Specifically, in this embodiment, the gas storage tank 401 has a split structure, such as... Figure 14 As shown, the gas storage tank 401 consists of a tank body 401-1 and an end cap 401-2. One end of the tank body 401-1 is open, and the open end of the tank body 401-1 is detachably fixed to the end cap 401-2.

[0101] The split, detachable gas tank structure allows for connection to tanks of any size as needed, making it more flexible in use. When weight reduction and portability are desired, the tank can be disconnected and the gas hose can be connected directly. It should be noted that the gas tank 401 can also be a one-piece structure.

[0102] To ensure the airtightness of the gas storage tank 401, a sealing element 401-3 is provided at the junction of the tank body 401-1 and the end cover 401-2. The sealing element 401-3 serves as a sealing structure between the tank body 401-1 and the end cover 401-2. It can be an O-ring, tape, or glue, etc. This embodiment does not impose any restrictions.

[0103] In order to secure the gas storage tank 401, such as Figure 13 As shown, in this embodiment, a gas cylinder support frame 204 is also provided inside the housing 2, and the end cover 401-2 is fixed to the gas cylinder support frame 204 by connecting bolts.

[0104] The gas storage tank 401 is also connected to the air outlet pipe 106 of the impeller assembly so that compressed airflow can enter the gas storage tank 401 for storage. Since the gas storage tank 106 rotates synchronously with the impeller rear end cover 105, the air outlet pipe 106 in this embodiment needs to be slidably connected to the gas storage tank 401.

[0105] Specifically, such as Figure 14 As shown, the vent pipe 106 extends into the air inlet of the air storage tank 401, and at least two Y-shaped sealing rings 401-5 are provided between the vent pipe 106 and the air inlet of the air storage tank 401. The outer edge of the vent pipe 106 slides circumferentially with the skirt edge of the inner hole of the Y-shaped sealing ring 401-5 to achieve a sealing effect.

[0106] In order to prevent the gas flow from being guided into the gas tank 401, the embodiment is provided with a one-way valve plate 401-6 at the gas inlet of the gas tank 401. Specifically, the one-way valve plate 401-6 is fixed on the end cover 401-2 by locking screws, and the one-way valve plate 401-6 can cover the gas inlet of the gas tank 401. Thus, the compressed gas flowing out of the gas outlet pipe 106 can only enter the gas tank 401 by pushing open the one-way valve plate 401-6.

[0107] As shown in Figure 12 , the multi-way joint 402 is connected at the gas outlet of the gas tank 401, and the multi-way joint 402 is provided with a gas pressure gauge 402-1 and a quick connector 402-2. The gas pressure gauge 402-1 and the quick connector 402-2 are specifically threadedly connected with the multi-way joint 402. The gas pressure gauge 402-1 can display the gas pressure value of the gas tank 401, and the quick connector 402-1 can be used by the user to lead out the compressed gas in the gas tank 401.

[0108] In the embodiment, as shown in Figure 12 and 13 , the control mechanism 5 includes a controller 501 and a pressure sensor 502.

[0109] As shown in Figure 13 , the controller 501 is arranged in the casing 2 and is electrically connected with the power mechanism 3. The controller 501 can be selected from a single-chip microcomputer, and the specific selection is not limited.

[0110] As shown in Figure 12 , the pressure sensor 502 is threadedly connected with the multi-way joint 402 and is communicatively connected with the controller 501. The pressure sensor 502 can monitor the gas pressure value in the gas tank 401 and transmit a signal to the controller 501. When the set pressure value is different from the measured pressure value monitored by the pressure sensor 502, the controller 501 controls the power mechanism 3 to make a corresponding response, so as to control the output gas pressure value within the range required by the user.

[0111] In addition, in order to realize power supply, as shown in Figure 12 and 13 , the shock wave compressor of the embodiment further includes a power supply 6 which is fixed on the top of the casing 2, but the specific arrangement position is not limited thereto. The power supply 6 can be a power battery pack or a package, or can be a commercial power (220 volts or 380 volts) or a commercial power after being rectified by a voltage reducer. In order to realize power supply control, the power supply 6 is further electrically connected with a power switch, a display panel and the like (not shown in the figure).

[0112] The shock wave compressor of the embodiment has the advantages of simple structure, small size, high compression efficiency due to the absence of friction pairs.

[0113] It should be noted that, for those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the present application.

Claims

1. A compressor impeller assembly, characterized in that, include: A compression impeller is provided with a deceleration passage. The deceleration passage extends from the outer edge of the compression impeller to the shaft hole, and the airflow direction of the deceleration passage is opposite to the rotation direction of the compression impeller. It is used to allow the high-speed airflow after shock wave compression to enter the deceleration passage from the outer edge of the compression impeller for deceleration, and to form a high-pressure airflow at the shaft hole of the compression impeller. A centrifugal impeller is coaxially connected to the compression impeller. The centrifugal impeller is provided with an acceleration air passage that extends from the central hole of the centrifugal impeller to the outer edge. This passage is used to allow high-pressure airflow to enter the acceleration air passage from the central hole of the centrifugal impeller and be thrown out from the outer edge of the centrifugal impeller. The main shaft is mounted on the compression impeller and the centrifugal impeller and is used to connect to the power mechanism to drive the compression impeller and the centrifugal impeller to rotate synchronously.

2. The compressor impeller assembly according to claim 1, characterized in that, A ventilation groove is provided on the outer periphery of the main shaft. The ventilation groove is connected to the shaft hole of the compression impeller and the shaft hole of the centrifugal impeller, so that the high-pressure airflow formed at the shaft hole of the compression impeller can enter the speed-increasing air passage through the shaft hole of the centrifugal impeller.

3. The compressor impeller assembly according to claim 1, characterized in that, The air intake end of the deceleration air passage is equipped with a flow restrictor, which is a baffle or a valve, so that when the speed of the compressor impeller reaches the set speed, the flow restrictor opens to introduce airflow.

4. The compressor impeller assembly according to claim 1, characterized in that, Also includes: An impeller cover is used to cooperate with the compression impeller to form a sealing structure.

5. The compressor impeller assembly according to claim 4, characterized in that, Also includes: The outlet duct is connected at one end to the impeller cover and at the other end to the gas storage mechanism for supplying compressed airflow from the speed-increasing air passage to the gas storage mechanism for storage.

6. The compressor impeller assembly according to claim 1, characterized in that, The deceleration air passage is provided in at least two sets, and the outlet end of the multiple sets of deceleration air passages is connected at the shaft center of the compression impeller; the speed-increasing air passage is provided in at least two sets, and the inlet end of the multiple sets of speed-increasing air passages is connected at the shaft center of the centrifugal impeller.

7. A shockwave compressor, characterized in that, include: The housing, power mechanism, gas storage mechanism, control mechanism, and compressor impeller assembly as described in any one of claims 1-6.

8. The shock compressor according to claim 7, characterized in that, The power mechanism includes a motor, which is a three-phase brushless sensorless high-KV high-speed DC motor or a three-phase brushless sensorless high-voltage DC motor. The three-phase brushless sensorless high-speed DC motor has a KV value greater than 1000 and a speed of 50000-100000 r / min. The voltage of the three-phase brushless sensorless high-voltage DC motor is 100-380V.

9. The shock compressor according to claim 7, characterized in that, The gas storage mechanism includes: A gas storage tank, which is an integral structure or a detachable split structure, and a one-way valve is provided at the air inlet of the gas storage tank. A multi-port connector is connected to the outlet of the gas storage tank, and the multi-port connector is equipped with a pressure gauge and a quick connector.

10. The shock compressor according to claim 9, characterized in that, The control mechanism includes: The controller is electrically connected to the power mechanism; A pressure sensor, located at the multi-port connector and connected to the controller, is used to monitor the air pressure in the gas tank. When the set pressure value differs from the actual pressure value monitored by the pressure sensor, the controller controls the power mechanism to respond.

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