CN115334840A - Energy-saving air compressor frequency converter - Google Patents

Abstract

The application relates to an energy-saving air compressor frequency converter, which belongs to the field of air compressor frequency converters and comprises a casing, wherein an air inlet is formed in one side wall of the casing, and an air outlet is formed in the other side wall of the casing; the first rotating fan blades are arranged inside the air inlet and are rotatably connected into the air inlet through first rotating shafts, and when the first rotating fan blades rotate to be in a vertical state, the adjacent first rotating fan blades are abutted to seal the air inlet; a second rotating fan blade is arranged inside the air outlet, the second rotating fan blade is rotatably connected into the air outlet through a second rotating shaft, and when the second rotating fan blades rotate to be in a vertical state, the adjacent second rotating fan blades are abutted to each other so as to seal the air inlet; the inside of casing is provided with the synchronous rotatory actuating mechanism of synchronous control first rotating fan blade and second rotating fan blade. This application has the inside heat exhaust effect of heat of quick messenger air compressor machine converter when the inside overheated of air compressor machine converter.

Description

Energy-saving air compressor frequency converter

Technical Field

The application relates to the field of air compressor frequency converters, in particular to an energy-saving air compressor frequency converter.

Background

The air compressor frequency converter is a special frequency converter customized for various air compressors. The air compressor is subjected to frequency conversion transformation, the air supply pressure can be stable, the air compressor can be kept to work under the set pressure value through the pressure regulator, the pressure stability and the reliability are high, and the pressure can be set in a stepless mode and can be adjusted at any time. The motor realizes soft start, and the service life and the maintenance cycle of the compressor are greatly prolonged.

In the working process of the air compressor frequency converter, a large amount of heat can be generated inside the air compressor frequency converter, so that the energy consumption inside the air compressor frequency converter is increased. The heat dissipation measure of current air compressor machine converter has been seted up the louvre on the shell mostly, makes the inside air of air compressor machine converter and external air intercommunication through the louvre, thereby it discharges the outside to make the inside heat of air compressor machine converter through the flow of air.

When designing the louvre, owing to still need consider the problem of dust, consequently the louvre on the air compressor machine converter can not open too much, too big, otherwise makes external dust enter into the inside of air compressor machine converter easily, so the radiating effect of current air compressor machine converter is not good.

Disclosure of Invention

In order to make the inside heat of air compressor machine converter discharge when the inside overheated of air compressor machine converter fast, this application provides an energy-conserving air compressor machine converter.

The application provides an energy-conserving air compressor machine converter adopts following technical scheme:

the frequency converter of the energy-saving air compressor comprises a casing, wherein air inlets are formed in the side walls of two opposite sides of the casing, one side wall of the casing is provided with an air inlet, and the other side wall of the casing is provided with an air outlet; a plurality of first rotating fan blades are arranged in the air inlet from top to bottom in sequence, the first rotating fan blades are rotatably connected into the air inlet through first rotating shafts which are transversely arranged, and when the first rotating fan blades are rotated to be in a vertical state, the adjacent first rotating fan blades are abutted to each other so as to seal the air inlet; a plurality of second rotating fan blades are arranged inside the air outlet from top to bottom in sequence, the second rotating fan blades are rotatably connected into the air outlet through second rotating shafts arranged transversely, and when the second rotating fan blades rotate to be in a vertical state, the adjacent second rotating fan blades are abutted to each other so as to seal the air inlet; and a driving mechanism for synchronously controlling the first rotating fan blade in the air inlet and the second rotating fan blade in the air outlet to synchronously rotate is arranged in the shell.

Through adopting above-mentioned technical scheme, when needs are cooled down fast to the temperature of mid-mounting intracavity, control first rotating fan blade and second rotating fan blade and rotate, open air inlet and gas outlet, make the air of casing outside can enter into the inside of casing, the air that is located the casing inside passes through the gas outlet and discharges, thereby cool down to the temperature of casing inside, when need not cool down, first rotating fan blade and second rotating fan blade seal air inlet and gas outlet, effectively reduce the dust that enters into the casing inside.

Optionally, the driving mechanism includes a first gear fixed on the first rotating shaft, a second gear fixed on the second rotating shaft, a first rack slidably connected inside the casing and engaged with the first gear, and a second rack slidably connected inside the casing and engaged with the second gear, and a driving assembly for driving the first rack and the second rack to move synchronously is arranged between the first rack and the second rack.

Through adopting above-mentioned technical scheme, when first rack carries out vertical removal, through the cooperation between first rack and the first gear to drive first pivot and rotate, along with the rotation of first pivot in order to realize the rotation of first rotation flabellum. When the second rack carries out vertical removal, through the cooperation between second rack and the second gear to drive the second pivot and rotate, along with the rotation of second pivot in order to realize the rotation of second rotation flabellum.

Optionally, the driving assembly includes a vertically arranged telescopic push-pull device and a connecting rod connecting the first rack and the second rack, the telescopic push-pull device is fixed inside the casing, and a piston rod of the telescopic push-pull device is connected with the connecting rod.

By adopting the technical scheme, when the piston rod of the telescopic push-pull device moves, the connecting rod moves synchronously, and the first rack and the second rack are driven synchronously to move in the vertical direction.

Optionally, the driving assembly comprises a driving rod and a vertical driving rod, the driving rod is connected with the first rack and the second rack, the vertical driving rod is rotatably connected with the driving lead screw inside the casing, the driving lead screw penetrates through the driving rod and is in threaded connection with the driving rod, and one end of the driving lead screw is provided with an electric driving part for driving the driving lead screw to rotate.

Through adopting above-mentioned technical scheme, through adopting the drive lead screw control actuating lever, can stop the actuating lever in the optional position department of stroke to the turned angle of control first rotating fan blade and second rotating fan blade.

Optionally, an air draft device is arranged inside the casing and used for drawing outside air into the casing.

Through adopting above-mentioned technical scheme, can accelerate the inside air flow of casing, make the air can be more quick take away the heat.

Optionally, the inside of casing is provided with from last upper air intake chamber, mid-mounting chamber and the lower floor exhaust chamber of arranging the setting in proper order down, the height at upper air intake chamber place is higher than the air inlet, the height at lower floor exhaust chamber place is less than the gas outlet, upper air intake chamber pass through inlet air channel with the air inlet is linked together, lower floor exhaust chamber through exhaust the passageway with the gas outlet is linked together, upper air intake chamber with be provided with first intercommunication mouth between the mid-mounting chamber, lower floor air intake chamber with be provided with the second intercommunication mouth between the mid-mounting chamber.

Through adopting above-mentioned technical scheme, when the air entered into the casing inside, the air at first entered into the inside of upper strata air inlet chamber, then the inside of downward flow to mid-mounting chamber, flow to lower floor's exhaust chamber at last, finally discharge through the gas outlet to ensure that the air that enters into the casing inside can be the complete way mid-mounting chamber, make the air can take away the heat in the mid-mounting chamber as far as.

Optionally, an air filter is arranged inside the upper-layer air inlet cavity.

Through adopting above-mentioned technical scheme, the internally mounted air filter piece in upper air inlet chamber, when the air way upper air inlet chamber, thereby the air passes air filter piece and filters the air, reduces the dust that carries in the air, reduces the dust volume that enters into the mid-mounting intracavity.

Optionally, a mounting port is formed in a position, opposite to the upper-layer air inlet cavity, on the side wall of the casing, and the air filter element can be mounted inside the upper-layer air inlet cavity through the mounting port.

Through adopting above-mentioned technical scheme, when installing upper strata air inlet chamber inside with air filter, only need insert the installation in the installing port with air filter, have convenient, swift advantage.

Optionally, the first rotating fan blade is provided with a plurality of first heat dissipation holes, and the second rotating fan blade is provided with a plurality of second heat dissipation holes.

Through adopting above-mentioned technical scheme, when the inside temperature of casing is lower, rotate the second louvre on the flabellum through first louvre on the flabellum and the second of first rotation to cool down to need not open air inlet and gas outlet.

Optionally, a temperature sensor is further installed inside the casing, a controller is arranged on the casing, the controller is connected with the temperature sensor and the driving mechanism through signals, and the controller can control the driving mechanism to start.

Through adopting above-mentioned technical scheme, when the inside temperature of casing surpassed the temperature value of setting for, controller control actuating mechanism starts to open air inlet and gas outlet, increase the volume that the air entered into the casing inside, thereby accelerate the cooling of the inside temperature of casing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the temperature in the middle installation cavity needs to be quickly cooled, the first rotating fan blade and the second rotating fan blade are controlled to rotate, the air inlet and the air outlet are opened, so that air outside the shell can enter the shell, and the air inside the shell is discharged through the air outlet, so that the temperature in the shell is cooled;

2. when the inside temperature of casing is lower, rotate the second louvre on the flabellum through first louvre on the flabellum and the second of rotating the flabellum and cool down to need not open air inlet and gas outlet, when the inside temperature of casing surpassed the temperature value of setting for, controller control actuating mechanism starts, thereby opens air inlet and gas outlet, and the volume that the increase air entered into the casing inside, thereby accelerates the cooling of the inside temperature of casing.

Drawings

Fig. 1 is a schematic structural diagram of an energy-saving air compressor frequency converter in a first embodiment of the present application;

FIG. 2 isbase:Sub>A cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic view illustrating the structure of an air inlet in the present application;

FIG. 4 is a partial enlarged view of portion B of FIG. 3;

fig. 5 is a schematic view illustrating the structure of the air outlet according to the present application;

FIG. 6 is a partial enlarged view of the portion C in FIG. 5;

FIG. 7 is a schematic structural diagram of a connection structure between the driving assembly and the first and second racks according to a first embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a connection structure between the driving assembly and the first rack and the second rack in the second embodiment of the present application;

fig. 9 is a schematic structural diagram of a third embodiment of the present application.

Description of reference numerals: 1. a housing; 11. an air inlet; 111. a first flange; 12. an air outlet; 121. a second flange; 13. a partition plate; 131. a first communication port; 132. a second communication port; 14. an upper layer air inlet cavity; 15. a cavity is arranged in the middle; 151. a temperature sensor; 152. a controller; 16. a lower exhaust chamber; 17. an air inlet channel; 18. an air exhaust channel; 19. an air filtration cartridge; 110. an installation port; 2. an air draft fan; 3. a first rotating fan blade; 31. a first rotating shaft; 32. a first gear; 33. a first heat dissipation hole; 4. a first rack; 5. a first slide bar; 6. a second rotating fan blade; 61. a second rotating shaft; 62. a second gear; 63. a second heat dissipation hole; 7. a second rack; 8. a second slide bar; 9. a drive assembly; 91. a connecting rod; 92. a telescopic push-pull device; 93. a drive rod; 94. driving a lead screw; 95. the motor is driven.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

Example one

The embodiment of the application discloses energy-conserving air compressor machine converter.

Referring to fig. 1 and 2, the energy-saving air compressor frequency converter comprises a hollow casing 1, and various electrical accessories required by the energy-saving air compressor frequency converter are arranged inside the casing 1. In the embodiment of the present application, the shape of the housing 1 is a rectangular body. On two opposite side walls of the casing 1, one side wall is provided with a rectangular air inlet 11, and the other side wall is provided with a rectangular air outlet 12, and the air inlet 11 and the air outlet 12 communicate the inside of the casing 1 with the outside.

The interior of the machine shell 1 is divided into three chambers by two layers of partition boards 13 arranged up and down, and the three chambers are an upper layer air inlet chamber 14, a middle installation chamber 15 and a lower layer exhaust chamber 16 from top to bottom in sequence. The edge of the partition 13 is fixed to the side wall of the cabinet 1. The upper layer air inlet cavity 14 is positioned at a height higher than that of the air inlet 11, and the lower layer air outlet cavity 16 is positioned at a height lower than that of the air outlet 12.

An air inlet channel 17 is arranged between the upper-layer air inlet cavity 14 and the air inlet 11, and the air inlet channel 17 is fixed on the inner side surface of the machine shell 1. The air inlet channel 17 connects the upper air inlet cavity 14 with the air inlet 11. When air outside the casing 1 enters the inside of the casing 1, the air firstly enters the inside of the air inlet channel 17 through the air inlet 11, and then flows upwards along the air inlet channel 17 to the inside of the upper air inlet chamber 14.

A first communication port 131 is formed in the partition plate 13 between the upper air inlet cavity 14 and the middle mounting cavity 15, and the upper air inlet cavity 14 is communicated with the middle mounting cavity 15 through the first communication port 131. A second communication port 132 is formed in the partition plate 13 between the middle mounting cavity 15 and the lower exhaust cavity 16, and the middle mounting cavity 15 is communicated with the lower exhaust cavity 16 through the second communication port 132.

An air inlet channel 17 is arranged between the lower exhaust cavity 16 and the air outlet 12, and an exhaust channel 18 is fixed on the inner side surface of the machine shell 1. The exhaust channel 18 connects the lower exhaust chamber 16 with the air outlet 12. When the air in the central mounting chamber 15 is exhausted from the cabinet 1, the air first enters the lower exhaust chamber 16, and is sent to the air outlet 12 along the exhaust passage 18, and finally is sent out of the cabinet 1 through the air outlet 12.

Because the air outlet 12 is located at a higher height than the lower exhaust chamber 16, when air enters the interior of the cabinet 1 from the air outlet 12, part of dust carried in the air will be intercepted in the lower exhaust chamber 16, and dust entering the interior of the middle installation chamber 15 is reduced.

At the internally mounted of first intercommunication mouth 131 has exhaust fan 2, and exhaust fan 2 starts the back, and the air that is located the casing 1 outside is sent into the inside of air inlet 11 and sending into mid-mounting cavity 15, and the air that flows through mid-mounting cavity 15 carries the heat in mid-mounting cavity 15, finally discharges through gas outlet 12.

An air filtering filter element 19 is arranged in the upper layer air inlet cavity 14, when air flows through the upper layer air inlet cavity 14, the air flows through the air filtering filter element 19, and the air carried by the air entering the middle installation cavity 15 is reduced through the filtering of the air in the air by the air filtering filter element 19.

A mounting opening 110 is formed on the side wall of one side of the casing 1 at a position opposite to the upper intake chamber 14, and the air filter element 19 is inserted into the upper intake chamber 14 through the mounting opening 110. When the air filter cartridge 19 needs to be replaced, the air filter cartridge 19 is simply pulled out through the mounting opening 110.

Referring to fig. 3 and 4, a first flange 111 extending outward and enclosing the air inlet 11 is disposed inside the air inlet 11, and the first flange 111 is fixedly connected to the casing 1. A plurality of first rotating blades 3 are sequentially arranged inside the first flange 111 from top to bottom, and the first rotating blades 3 are rotatably connected inside the first flange 111 of the air inlet 11 by a first rotating shaft 31 arranged in a transverse direction. When the first rotating blades 3 are rotated to the vertical state, the adjacent first rotating blades 3 are abutted, and the first rotating blades 3 seal the air inlet 11.

The first rotating fan blade 3 is provided with a plurality of first heat dissipating holes 33.

The end of the first shaft 31 extends through the first flange 111 and into the central mounting chamber 15. A first gear 32 is fixed at one end of each first rotating shaft 31 in the same direction, and the first gears 32 on each first rotating shaft 31 are arranged oppositely up and down. Inside the central mounting chamber 15, a first rack 4 is provided, which engages with each first gear 32, the first rack 4 being slidably connected inside the central mounting chamber 15. The moving direction of the first rack 4 is vertically arranged.

Two first sliding rods 5 vertically penetrating through the first rack 4 are arranged in the middle mounting cavity 15, the top ends of the first sliding rods 5 are fixed with the partition plate 13 located above, and the bottom ends of the first sliding rods 5 are fixed with the partition plate 13 located below. The first rack 4 is slidably connected to two first slide bars 5. When the first rack 4 moves vertically, the first rotating blade 3 is driven to rotate by the cooperation between the first rack 4 and the first gear 32.

Referring to fig. 5 and 6, a second flange 121 extending outward and enclosing the air outlet 12 is disposed inside the air outlet 12, and the second flange 121 is fixedly connected to the casing 1. A plurality of second rotating blades 6 are sequentially arranged inside the second flange 121 from top to bottom, and the second rotating blades 6 are rotatably connected inside the second flange 121 of the air outlet 12 through a second rotating shaft 61 arranged transversely. When the second rotating blades 6 rotate to the vertical state, the adjacent second rotating blades 6 are abutted, and the second rotating blades 6 seal the air outlet 12.

The second rotating fan blade 6 is provided with a plurality of second heat dissipation holes 63.

The end of the second shaft 61 extends through the second flange 121 and into the central mounting cavity 15. A second gear 62 is fixed at one end of each second rotating shaft 61 in the same direction, and the second gears 62 on each second rotating shaft 61 are arranged oppositely up and down. A second rack 7 is provided inside the central mounting cavity 15, engaging each second gear 62, the second rack 7 being slidably connected inside the central mounting cavity 15. The moving direction of the second rack 7 is vertically arranged.

Two second slide bars 8 vertically penetrating through the second rack 7 are arranged in the middle mounting cavity 15, the top ends of the second slide bars 8 are fixed with the partition plate 13 positioned above, and the bottom ends of the second slide bars 8 are fixed with the partition plate 13 positioned below. The second rack 7 is connected to two second sliding bars 8 in a sliding manner. When the second rack 7 moves vertically, the second rack 7 and the second gear 62 are engaged with each other, so that the second rotating fan 6 is driven to rotate.

Referring to fig. 7, a driving assembly 9 for synchronously driving the first rack 4 and the second rack 7 to vertically move is arranged between the first rack 4 and the second rack 7, the driving assembly 9 includes a connecting rod 91 located between the first rack 4 and the second rack 7 and a vertically arranged telescopic push-pull device 92, and the telescopic push-pull device 92 can adopt an electric push rod, a telescopic cylinder or a telescopic hydraulic cylinder. The telescopic push-pull device 92 in this embodiment is exemplified by an electric push rod. The telescopic push-pull 92 is located above the connecting rod 91. The piston rod of the telescopic push-pull device 92 is fixed to the connecting rod 91. When the piston rod of the telescopic push-pull device 92 moves, the first rack 4 and the second rack 7 are synchronously driven to move. When the first and second racks 4 and 7 are vertically moved, the first and second rotating blades 3 and 6 are rotated, thereby opening or closing the air inlet 11 and the air outlet 12.

The implementation principle of the energy-saving air compressor frequency converter in the embodiment of the application is as follows: when energy-conserving air compressor machine converter uses, when the temperature in the middle part installation cavity 15 is cooled down fast to needs, control first rotation flabellum 3 and second and rotate flabellum 6 and rotate, open air inlet 11 and gas outlet 12, make the air of casing 1 outside can enter into the inside of casing 1, the air that is located casing 1 inside passes through gas outlet 12 and discharges, thereby cool down the temperature in the middle part installation cavity 15, when need not cool down, first rotation flabellum 3 and second rotate flabellum 6 and seal air inlet 11 and gas outlet 12, effectively reduce the dust that enters into the casing inside.

Example two

The embodiment of the application discloses energy-conserving air compressor machine converter.

Referring to fig. 8, the difference between the second embodiment and the first embodiment is: the drive assembly 9 used in the second embodiment is different from the drive assembly 9 used in the first embodiment. The driving assembly 9 used in the second embodiment includes a driving rod 93 located between the first rack 4 and the second rack 7, one end of the driving rod 93 is fixed to the first rack 4, and the other end of the driving rod 93 is fixed to the second rack 7. The driving assembly 9 further includes a driving screw 94 vertically penetrating the driving rod 93, and the driving screw 94 is rotatably connected inside the middle mounting cavity 15. The driving screw 94 is connected with the driving rod 93 through screw threads. A driving motor 95 is provided at one end of the driving screw 94, and the driving motor 95 is fixed to an inner side surface of the casing 1. The motor shaft of the drive motor 95 is coaxially disposed with the drive screw 94 and fixed together.

The implementation principle of the energy-saving air compressor frequency converter in the embodiment of the application is as follows: by controlling the movement of the driving rod 93 by using the driving lead screw 94, the first rack 4 and the second rack 7 can be fixed at any height within the stroke range, and the rotation angles of the first rotating fan blade 3 and the second rotating fan blade 6 can be controlled.

EXAMPLE III

The embodiment of the application discloses energy-conserving air compressor machine converter.

Referring to fig. 9, the difference between the third embodiment and the second embodiment is:

a temperature sensor 151 and a controller 152 are also installed in the middle installation cavity 15, and the controller 152 is in signal connection with the temperature sensor 151 and the driving motor 95 of the driving assembly 9.

When the temperature in the middle installation cavity 15 is lower, the air inlet 11 is sealed by the first rotating fan blade 3, the air outlet 12 is sealed by the second rotating fan blade 6, and the heat dissipation in the casing 1 is performed through the first heat dissipation hole 33 on the first rotating fan blade 3 and the second heat dissipation hole 63 on the second rotating fan blade 6. After the temperature of the inside of the middle mounting chamber 15 is increased. Control first rotating fan leaf 3 and second rotating fan leaf 6 and rotate, open air inlet 11 and gas outlet 12 completely, the air of casing 1 outside can be better at this moment in entering into casing 1 to inside cooling to casing 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides an energy-conserving air compressor machine converter which characterized in that: the air conditioner comprises a machine shell (1), wherein the side walls of two opposite sides of the machine shell (1) are provided with an air inlet (11) on one side wall and an air outlet (12) on the other side wall; a plurality of first rotating fan blades (3) are sequentially arranged in the air inlet (11) from top to bottom, the first rotating fan blades (3) are rotatably connected into the air inlet (11) through first rotating shafts (31) which are transversely arranged, and when the first rotating fan blades (3) are rotated to be in a vertical state, the adjacent first rotating fan blades (3) are abutted to each other so as to seal the air inlet (11); a plurality of second rotating fan blades (6) are sequentially arranged in the air outlet (12) from top to bottom, the second rotating fan blades (6) are rotatably connected into the air outlet (12) through second rotating shafts (61) which are transversely arranged, and when the second rotating fan blades (6) are rotated to be in a vertical state, the adjacent second rotating fan blades (6) are abutted to seal the air inlet (11); the air conditioner is characterized in that a driving mechanism for synchronously controlling a first rotating fan blade (3) in an air inlet (11) and a second rotating fan blade (6) in an air outlet (12) to synchronously rotate is arranged in the machine shell (1).

2. The frequency converter of the energy-saving air compressor as claimed in claim 1, wherein: the driving mechanism comprises a first gear (32) fixed on a first rotating shaft (31), a second gear (62) fixed on a second rotating shaft (61), a first rack (4) which is arranged inside the machine shell (1) and meshed with the first gear (32), and a second rack (7) which is arranged inside the machine shell (1) and meshed with the second gear (62), wherein a driving assembly (9) for driving the first rack (4) and the second rack (7) to synchronously move is arranged between the first rack (4) and the second rack (7).

3. The frequency converter of the energy-saving air compressor as claimed in claim 2, wherein: the driving assembly (9) comprises a vertically arranged telescopic push-pull device (92) and a connecting rod (91) for connecting the first rack (4) with the second rack (7), the telescopic push-pull device (92) is fixed inside the machine shell (1), and a piston rod of the telescopic push-pull device (92) is connected with the connecting rod (91).

4. The frequency converter of the energy-saving air compressor as claimed in claim 2, wherein: drive assembly (9) are including being connected actuating lever (93) and vertical setting and the gyration that link to each other first rack (4) and second rack (7) are in drive lead screw (94) of casing (1) inside, drive lead screw (94) run through actuating lever (93) and with actuating lever (93) screw thread links to each other, the one end of drive lead screw (94) is provided with and is used for the drive lead screw (94) carry out pivoted electric drive spare.

5. The frequency converter of the energy-saving air compressor as claimed in claim 1, wherein: the inside of casing (1) is provided with updraft ventilator, updraft ventilator is used for with the outside air suction to in casing (1).

6. The frequency converter of the energy-saving air compressor as claimed in claim 5, wherein: the utility model discloses a fan casing, including casing (1), upper air inlet chamber (14), mid-mounting chamber (15) and lower floor exhaust chamber (16) that set up are arranged in proper order from last to inside being provided with, the upper air inlet chamber (14) is located highly be higher than air inlet (11), the height at lower floor exhaust chamber (16) place is less than gas outlet (12), upper air inlet chamber (14) through inlet air channel (17) with air inlet (11) are linked together, lower floor exhaust chamber (16) through exhaust passageway (18) with gas outlet (12) are linked together, upper air inlet chamber (14) with be provided with first intercommunication mouth (131) between mid-mounting chamber (15), lower floor air inlet chamber with be provided with second intercommunication mouth (132) between mid-mounting chamber (15).

7. The frequency converter of the energy-saving air compressor as claimed in claim 6, wherein: an air filter element is arranged inside the upper-layer air inlet cavity (14).

8. The frequency converter of the energy-saving air compressor as claimed in claim 7, wherein: the air filter is characterized in that a mounting port (110) is formed in the side wall of the machine shell (1) and is opposite to the upper-layer air inlet cavity (14), and the air filter can be mounted inside the upper-layer air inlet cavity (14) through the mounting port (110).

9. The frequency converter of the energy-saving air compressor as claimed in claim 1, wherein: a plurality of first heat dissipation holes (33) are formed in the first rotating fan blade (3), and a plurality of second heat dissipation holes (63) are formed in the second rotating fan blade (6).

10. The frequency converter of the energy-saving air compressor as claimed in claim 9, wherein: temperature sensor (151) are still installed to the inside of casing (1), be provided with controller (152) on casing (1), controller (152) with temperature sensor (151) and actuating mechanism signal link to each other, controller (152) can control actuating mechanism starts.

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