Alternating current and direct current dual-purpose mute digital square tank air compressor

Abstract

The utility model relates to the technical field of air compressors, and particularly discloses an alternating-current and direct-current dual-purpose mute digital square tank air compressor which comprises an air storage tank. The air storage tank is a square air tank and is provided with a housing, a compressor support is arranged on one side of the air storage tank, the housing is fixedly connected with the air storage tank and the compressor support, the upper portion of the compressor support is connected with a left box body and a right box body, and a direct-current brushless motor is connected between the left box body and the right box body. The upper surface of the air storage tank is provided with a pressure measuring opening and connected with a pressure hose, a liquid crystal display panel and a change-over switch are arranged on the upward face of the housing, a circuit board with an electronic pressure sensor is arranged in the housing, the circuit board is connected with the other end of the pressure hose, and the circuit board is electrically connected with the liquid crystal display panel. And the liquid crystal display panel reads the pressure value in the gas storage tank through the circuit board. According to the utility model, the external AC / DC power converter is adopted to facilitate power supply taking, the square tank structure is adopted, the size is small, the carrying is easy, and the DC brushless motor is adopted to reduce the noise.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an AC / DC dual-purpose silent digital square tank air compressor. Background Art

[0002] An air compressor is an air compressor that sucks in and compresses air, causing its pressure to rise and store it in a gas container. When it is needed, the air is released and transmitted to where it is needed through a pipeline.

[0003] Most of the air compressors currently used have the problems of being large in size and inconvenient to carry, generating noise due to vibration during operation, and lithium-ion air compressors cannot work continuously for a long time in an AC power environment. Based on this, the utility model patent with publication number CN210660514U discloses an AC / DC dual-purpose air compressor, which has a compressor and a power converter above the gas tank and a muffler to solve the above problems. However, its users cannot set the gas pressure range that meets their requirements according to various working conditions and gas adjustment, which causes unnecessary energy waste for users who use different gas pressures. Utility Model Content

[0004] The purpose of the utility model is to provide an AC / DC dual-purpose silent digital square tank air compressor to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A dual-purpose AC / DC silent digital square tank air compressor, comprising an air tank, which is square in shape, and a compressor bracket is provided at a lower portion of one side of the air tank, and a left box, a motor and a right box are provided in sequence on the upper portion of the compressor bracket in a direction parallel to the air tank, and a cylinder head is fixedly connected to the left box and the right box, and a muffler is fixedly connected to one side of one of the cylinder heads, and a muffler filter is provided in the muffler, and a cover is provided on the air tank, and a liquid crystal display panel and a conversion switch are provided on the upward side of the cover.

[0007] As a further solution of the utility model, a circuit board is provided under the LCD display panel, an electronic pressure sensor is provided on the circuit board, the circuit board is electrically connected to the LCD display panel, and the circuit board is fixedly connected to the LCD display panel and the cover shell by bolts.

[0008] As a further solution of the utility model, a pressure measuring port is provided on the upper surface of the gas storage tank, the pressure measuring port is fixedly connected to interface 1, the interface 1 is fixedly connected to a pressure hose, the circuit board is fixedly connected to interface 2, and the interface 2 is fixedly connected to the other end of the pressure hose.

[0009] As a further solution of the utility model, the LCD display panel is provided with a LCD display screen, a power button, a pressure value increase key, a pressure value decrease key and a function conversion key, and the conversion switch is provided with a DC power position, a power off position and an AC power position.

[0010] As a further solution of the utility model, the motor is a brushless DC motor, and the motor is electrically connected to a drive controller.

[0011] As a further solution of the utility model, a drive controller bracket is provided on the upper surface of the gas storage tank, and the drive controller is fixedly connected to the drive controller bracket by bolts.

[0012] As a further solution of the utility model, two supporting feet are provided at the bottom of the gas storage tank and the compressor bracket, and the supporting feet are respectively connected to the gas storage tank and the compressor bracket by bolts.

[0013] As a further solution of the utility model, it also includes an AC / DC power converter, the cover shell is provided with a wiring hole, and the AC / DC power converter is electrically connected to the conversion switch through the wiring hole.

[0014] As a further solution of the utility model, the gas tank is provided with a handle bracket on the side of the compressor bracket, and the upper part of the cover shell is provided with a handle fixing seat and a handle connected to the handle fixing seat, and the handle fixing seat is fixedly connected to the cover shell and the handle bracket in sequence by bolts.

[0015] As a further solution of the utility model, air windows and air grooves are provided on the cover shell.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model is equipped with an electronic pressure sensor to detect the pressure in the gas tank, and is equipped with a liquid crystal display panel to set the starting pressure value and the stopping pressure value according to user needs. When the pressure value in the gas tank reaches or exceeds the set stopping pressure value, the air compressor is on standby. When the pressure in the gas tank decreases to the set starting pressure value, the air compressor starts to restart, which can reduce unnecessary energy waste.

[0018] 2. The utility model adopts a square gas tank with a compact overall design structure and a small size, and is provided with a handle for easy carrying and use.

[0019] 3. The utility model can use a battery pack with a lithium battery to use a DC power supply, and can also use an external AC / DC power converter to input AC power, which is convenient for power supply, solves the problem that the DC air compressor cannot work in an AC power environment, and overcomes the problem that the lithium battery cannot work continuously for a long time.

[0020] 4. The utility model adopts a brushless DC motor with low speed, small vibration, low motor noise, and is provided with a muffler. The muffler is the air intake of the air compressor and has built-in muffler filter cotton, which can greatly reduce the noise generated by the air intake when the air compressor is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0023] Figure 2 It is a bottom view of the utility model;

[0024] Figure 3 It is a three-dimensional schematic diagram of the gas storage tank of the utility model;

[0025] Figure 4 It is a three-dimensional schematic diagram of part of the utility model;

[0026] Figure 5 It is a top view of the combination of the cover shell and the liquid crystal display panel of the utility model;

[0027] Figure 6 It is a bottom view of the combination of the cover shell, liquid crystal display panel and circuit board of the utility model;

[0028] In the figure: 1. gas tank; 2. compressor bracket; 3. support foot; 4. left box; 5. motor; 6. right box; 7. drive controller; 8. fan blade; 9. wind cover; 10. buckle; 11. cylinder head; 12. cooling fins; 13. muffler; 14. charging port; 15. air inlet; 16. one-way valve; 17. air pipe; 18. air outlet; 19. quick connector; 20. pressure measuring port; 21. interface 1; 22. pressure hose; 23. safety port; 24. safety valve; 25. Drive controller bracket; 26, fixing bracket; 27, cover; 28, LCD panel; 281, LCD screen; 282, power button; 283, pressure value increase button; 284, pressure value decrease button; 285, function conversion button; 29, conversion switch; 30, battery pack; 31, circuit board; 32, interface 2; 33, handle bracket; 34, handle fixing seat; 35, handle; 36, drain port; 37, drain valve; 271, air window; 272, air trough; 273, wiring hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6 This embodiment provides a technical solution: an AC / DC dual-purpose silent digital square tank air compressor, comprising a gas tank 1, the gas tank 1 is a square gas tank, a compressor bracket 2 is welded to the lower part of one side of the gas tank 1, and two support feet 3 are provided at the bottom of the gas tank 1 and the compressor bracket 2, and the support feet 3 are respectively connected to the gas tank 1 and the compressor bracket 2 by bolts. A left box 4 and a right box 6 are provided on the upper part of the compressor bracket 2, and the left box 4 and the right box 6 are respectively fixedly connected to the compressor bracket 2 by bolts. A motor 5 is provided between the left box 4 and the right box 6, and the straight line formed by the left box 4, the motor 5 and the right box 6 is parallel to the gas tank 1, so that the overall structure of the air compressor is square. The motor 5 adopts a DC brushless motor, which has a low speed, small vibration and low electrical noise. The motor 5 is electrically connected to a drive controller 7 for remote control of the motor 5.

[0031] The motor 5 is connected with a fan blade 8 at both ends, and the other side of the left box 4 and the right box 6 corresponding to the connection with the motor 5 is provided with a wind shield 9, and the wind shield 9 is fixedly connected to the left box 4 and the right box 6 by a buckle 10. A cylinder head 11 is provided above the left box 4 and the right box 6, and a heat dissipation fin 12 is provided on the cylinder head 11. The cylinder head 11 and the left box 4 or the right box 6 are fixedly connected by bolts, and one of the cylinder heads 11 is fixedly connected with a muffler 13 at the position above the wind shield 9. The muffler 13 is the air intake of the air compressor, and is equipped with a silencer filter cotton, which can greatly reduce the noise generated by the air intake of the air compressor during operation. The other cylinder head 11 is provided with a charging port 14 on the side close to the air storage tank 1, and an air inlet 15 is provided on the upper surface of the air storage tank 1. The air inlet 15 is fixedly connected with a one-way valve 16, and the one-way valve 16 is fixedly connected with an air pipe 17, and the other end of the air pipe 17 is fixedly connected with the charging port 14. The upper surface of the gas storage tank 1 is provided with an air outlet 18, which is fixedly connected with a quick connector 19, so that the user can use external tools. The upper surface of the gas storage tank 1 is provided with a pressure measuring port 20, which is connected with an interface 21 fixedly connected with a pressure hose 22, so as to detect the pressure in the gas storage tank 1. The upper surface of the gas storage tank 1 is provided with a safety port 23, which is fixedly connected with a safety valve 24.

[0032] A drive controller bracket 25 is welded on the upper surface of the gas tank 1, and the drive controller bracket 25 is fixedly connected to the drive controller 7 by bolts. A fixing bracket 26 is welded on the upper surface of the gas tank 1 and the side surface where the compressor bracket 2 is welded. A cover 27 is also provided on the gas tank 1, and the cover 27 is connected to the fixing bracket 26 and the compressor bracket 2 by bolts. The cover 27 is provided with openings at the positions of the muffler 13, the quick connector 19, the safety valve 24 and the support foot 3, so that the muffler 13, the quick connector 19, the safety port 23 and the support foot 3 are exposed, which is convenient for installation and use. The upper side of the cover 27 is provided with a liquid crystal display panel 28 for adjusting the pressure value and a conversion switch 29 for AC / DC power conversion. The liquid crystal display panel 28 is provided with a liquid crystal display screen 281, a power button 282, a pressure value increase button 283, a pressure value decrease button 284 and a function conversion button 285, and the conversion switch 29 is provided with a DC gear, a power-off gear and an AC gear. A battery pack 30 for installing a lithium battery to provide a DC power supply is provided on one side of the housing 27 corresponding to the muffler 13. A circuit board 31 with an electronic pressure sensor is provided below the LCD panel 28, and the circuit board 31 is electrically connected to the LCD panel 28 and the drive controller 7. An interface 2 32 is provided on the circuit board 31, which is used to connect the other end of the pressure hose 22. The electronic pressure sensor on the circuit board 31 can detect the pressure in the gas tank 1. The LCD panel 28 reads the pressure value in the gas tank 1 through the circuit board 31, and the circuit board 31 and the LCD panel 28 are fixedly connected to the housing 27 by bolts. There are multiple working modes preset in the LCD panel 28, and the working modes are set with a start pressure value and a stop pressure value. The LCD display screen 281 displays the start pressure value, the stop pressure value, the pressure value unit and the mode icon, etc.

[0033] The gas storage tank 1 is provided with a handle bracket 33 on the upper side of the compressor bracket 2, and the upper part of the cover 27 is provided with a handle fixing seat 34 and a handle 35 connected to the handle fixing seat 34. The handle fixing seat 34 is fixedly connected to the cover 27 and the handle bracket 33 in sequence by bolts.

[0034] A sewage outlet 36 is provided at the bottom of the gas storage tank 1 , and a sewage valve 37 is fixedly connected to the sewage outlet 36 .

[0035] The housing 27 is provided with air windows 271 at positions corresponding to the air cover for easy air intake, and the upper surface of the housing 27 is provided with air grooves 272 to help dissipate heat from the air compressor. The housing 27 is provided with a wiring hole 273 on one side near the conversion switch 29 for externally connecting an AC / DC power converter.

[0036] Preferably, the supporting feet 3 are rubber feet for shock absorption.

[0037] Working principle:

[0038] When the utility model is used, it is determined whether to use a DC power supply or an AC power supply according to the working conditions, and the conversion switch 29 is switched to the corresponding gear. When a DC power supply is used, the battery pack 30 is a DC power supply, and the conversion switch 29 is switched to the DC power gear; when an AC power supply is used, the AC / DC power converter connected to the external AC power supply is electrically connected to the conversion switch 29 through the wiring hole 273, and the conversion switch 29 is switched to the AC power gear.

[0039] Touch the power button 282 on the LCD panel 28, and the LCD screen 281 lights up to perform a self-check to check whether the air compressor has a fault. If the self-check shows a fault, an error prompt will appear on the LCD screen 281.

[0040] When the self-check is fault-free, the LCD screen 281 displays the preset mode. Each mode is a different air compressor working range, and a start pressure value and a stop pressure value are set. The pressure value unit and the preset mode can be selected through the function key, and the set pressure value can also be adjusted through the pressure value increase key 283 and the pressure value decrease key 284 as needed.

[0041] Press and hold the power button 282 for two seconds, the air compressor starts, the electronic pressure sensor detects that the pressure in the air tank 1 of the air compressor is lower than the set stop pressure value, the air compressor starts to work, the circuit board 31 controls the drive controller 7 to control the motor 5 to start running, driving the fan blade 8 to rotate, and the air enters the air cover from the air windows 271 on both sides of the cover 27. Part of the air enters the cylinder head 11 from the muffler 13 and is compressed, and part of the air is discharged from the air holes of the left box 4 and the right box 6 and discharged from the air groove 272 of the cover 27, which has the effect of cooling the air compressor. The compressed air enters the air tank 1 from the charging port 14 through the air pipe 17 and the one-way valve 16, and the corresponding tool is operated by connecting the quick connector 19 of the air outlet 18 on the upper surface of the air tank 1. The internal dirt can be cleaned by connecting the drain valve 37 connected to the drain port 36 at the bottom of the air tank 1.

[0042] When the electronic pressure sensor detects that the pressure in the gas tank 1 reaches or exceeds the set stop pressure value, the air compressor is on standby, and the circuit board 31 controls the drive controller 7 to control the motor 5 to stop running and the fan blades 8 to stop rotating. When the pressure value in the gas tank 1 decreases to the set start pressure value, the air compressor starts working again.

[0043] Press and hold the power button 282 for three seconds and the air compressor will shut down and stop working.

[0044] The utility model is equipped with an electronic pressure sensor to detect the pressure in the gas tank 1, and is equipped with a liquid crystal display panel 28 to set the starting pressure value and the stopping pressure value according to user needs. When the pressure value in the gas tank 1 reaches or exceeds the set stopping pressure value, the air compressor is on standby. When the pressure in the gas tank 1 is reduced to the set starting pressure value, the air compressor starts to restart, thereby reducing unnecessary energy waste.

[0045] Preferably, the maximum stop pressure value of the utility model is 8 BAR, the square gas tank is small in size, and the safety of using the square gas tank is guaranteed.

[0046] The utility model adopts a square gas tank, the overall design structure is compact, the volume is small, and a handle is provided for easy carrying and use.

[0047] The utility model can use a battery pack 30 with a lithium battery to use a DC power supply, and can also use an external AC / DC power converter to input AC power, which is convenient for power supply, solves the problem that the DC air compressor cannot work in an AC power environment, and overcomes the problem that the lithium battery cannot work continuously for a long time.

[0048] The utility model adopts a brushless DC motor with low speed, small vibration and low motor noise, and is provided with a muffler 13, which is the air intake port of the air compressor and has built-in muffler filter cotton, which can greatly reduce the noise generated by the air intake when the air compressor is working.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An AC / DC dual-purpose silent digital square tank air compressor, comprising an air storage tank (1), characterized in that: The gas storage tank (1) is square in shape. A compressor bracket (2) is provided at a lower portion of one side of the gas storage tank (1). A left box (4), a motor (5) and a right box (6) are provided in sequence on an upper portion of the compressor bracket (2) in a direction parallel to the gas storage tank (1). A cylinder head (11) is fixedly connected to both the left box (4) and the right box (6). A muffler (13) is fixedly connected to one side of one of the cylinder heads (11). A muffler filter is provided in the muffler (13). A cover (27) is provided on the gas storage tank (1). A liquid crystal display panel (28) and a conversion switch (29) are provided on an upward side of the cover (27).

2. The AC / DC dual-purpose silent digital square tank air compressor according to claim 1 is characterized in that: A circuit board (31) is provided below the liquid crystal display panel (28), an electronic pressure sensor is provided on the circuit board (31), the circuit board (31) is electrically connected to the liquid crystal display panel (28), and the circuit board (31) is fixedly connected to the liquid crystal display panel (28) and the cover (27) by bolts.

3. The AC / DC dual-purpose silent digital square tank air compressor according to claim 2 is characterized in that: The gas storage tank (1) is provided with a pressure measuring port (20) on its upper surface, the pressure measuring port (20) is fixedly connected to a first interface (21), the first interface (21) is fixedly connected to a pressure hose (22), the circuit board (31) is fixedly connected to a second interface (32), the second interface (32) is fixedly connected to the other end of the pressure hose (22).

4. The AC / DC dual-purpose silent digital square tank air compressor according to claim 1 is characterized in that: The liquid crystal display panel (28) is provided with a liquid crystal display screen (281), a power on key (282), a pressure value increase key (283), a pressure value decrease key (284) and a function conversion key (285), and the conversion switch (29) is provided with a direct current gear position, a power off gear position and an alternating current gear position.

5. The AC / DC dual-purpose silent digital square tank air compressor according to claim 1 is characterized in that: The motor (5) is a brushless DC motor, and the motor (5) is electrically connected to a drive controller (7).

6. The AC / DC dual-purpose silent digital square tank air compressor according to claim 5 is characterized in that: A drive controller bracket (25) is provided on the upper surface of the gas storage tank (1), and the drive controller (7) is fixedly connected to the drive controller bracket (25) by means of bolts.

7. The AC / DC dual-purpose silent digital square tank air compressor according to claim 1 is characterized in that: The bottom of the gas storage tank (1) and the compressor bracket (2) are each provided with two supporting feet (3), and the supporting feet (3) are respectively connected to the gas storage tank (1) and the compressor bracket (2) by bolts.

8. The AC / DC dual-purpose silent digital square tank air compressor according to claim 1 is characterized in that: It also includes an AC / DC power converter. The cover (27) is provided with a wiring hole (273), and the AC / DC power converter is electrically connected to the conversion switch (29) through the wiring hole (273).

9. The AC / DC dual-purpose silent digital square tank air compressor according to claim 1 is characterized in that: The gas storage tank (1) is provided with a handle bracket (33) on the upper side of the compressor bracket (2), and the upper part of the cover (27) is provided with a handle fixing seat (34) and a handle (35) connected to the handle fixing seat (34), and the handle fixing seat (34) is fixedly connected to the cover (27) and the handle bracket (33) in sequence by bolts.

10. The AC / DC dual-purpose silent digital square tank air compressor according to claim 1 is characterized in that: The cover shell (27) is provided with an air window (271) and an air groove (272).

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