Air compressor

Abstract

The utility model relates to an air compressor which comprises an air storage tank, an air cylinder assembly fixed above the air storage tank, a fan assembly connected to the air cylinder assembly and a fan cover assembly arranged on the outer side of the fan assembly, and the fan assembly comprises a fan body and a plurality of fan blades evenly distributed in the circumferential direction of the fan body. The fan blade is provided with a fan blade edge farthest from the center of the fan body, the fan cover assembly comprises a fan cover body and an air inlet penetrating through the fan cover body, the air inlet is provided with an air inlet edge farthest from the center of the fan cover body, and the distance between the air inlet edge and the fan blade edge is not larger than 15 mm in the radial direction of the fan assembly. By improving the distance from the air inlet edge to the fan blade edge, the air inlet effect is improved under the condition that the air inlet area is not changed, the air inlet requirement is effectively met, and then the cooling efficiency of the air compressor is improved.

Description

[Technical field]

[0001] The utility model relates to an air compressor, in particular to an air compressor used in occasions such as decoration and construction. [Background Technology]

[0002] An air compressor is an industrial equipment that compresses gas. It is a device that converts mechanical energy into gas pressure energy. Air compressors are widely used in machinery, medical, food, automobile, chemical and building materials industries. An air compressor generally includes a cylinder assembly, a motor assembly, a fan assembly and a hood assembly. The fan assembly is fixed at both ends of the motor assembly, and the hood assembly is installed on both sides of the cylinder assembly. The hood assembly is the air inlet end. When the motor assembly is working, it drives the fan assembly to rotate, and the generated cooling airflow enters from the hood assembly, thereby dissipating heat for the cylinder assembly and the motor assembly. Generally, in order to meet the heat dissipation requirements, the air intake volume and air intake area will be increased. The existing air compressor achieves the purpose of a large air intake area by increasing the hole area of ​​the hood. However, if the hole area is increased in the wrong position, the air intake volume is not increased significantly, and the motor heat dissipation cannot be met; at the same time, if the hole area of ​​the hood is too large, the probability of hard objects in the environment being sucked in during operation increases, and it is easy to contact with the rotating fan assembly, causing damage.

[0003] In view of this, it is indeed necessary to provide an improved air compressor to overcome the defects of the prior art. [Contents of the utility model]

[0004] In view of the deficiencies in the prior art, the utility model aims to provide an air compressor with good air intake effect and long service life.

[0005] The utility model adopts the following technical solution to solve the problems of the prior art: an air compressor, comprising an air tank, a cylinder assembly fixed above the air tank, a fan assembly connected to the cylinder assembly and a wind cover assembly arranged on the outside of the fan assembly, the fan assembly comprising a fan body and a plurality of fan blades evenly distributed along the circumference of the fan body, the fan blades having a fan blade edge farthest from the center of the fan body, the wind cover assembly comprising a fan cover body and an air inlet passing through the fan cover body, the air inlet having an air inlet edge farthest from the center of the fan cover body; in the radial direction of the fan assembly, the distance between the air inlet edge and the fan blade edge is not greater than 15 mm.

[0006] A further improvement is that the distance between the air inlet edge and the fan blade edge is not greater than 10 mm.

[0007] A further improvement is that the length of the blade edge from the center of the fan body is greater than the length of the air inlet edge from the center of the fan cover body.

[0008] A further improved solution is: the wind shield assembly includes a plurality of straight grids and circular grids, and the straight grids and the circular grids separate the air inlets.

[0009] A further improvement is that the straight grids are symmetrically distributed around the center of the wind shield body, and the circular grids are equidistantly distributed around the center of the wind shield body in the form of concentric circles.

[0010] A further improved solution is: six straight grids are provided, the angle formed by any two adjacent straight grids is 60°, and two circular grids are provided.

[0011] A further improved solution is: the cylinder assembly includes a crankcase accommodating the fan assembly, two cylinders arranged above the crankcase and a cylinder head connected to the cylinder, and a silencer is arranged between the two cylinder heads.

[0012] A further improved solution is: the wind shield assembly includes a mounting portion arranged on the outer edge of the wind shield body, and the mounting portion is mounted in cooperation with the crankcase.

[0013] A further improvement is as follows: a first air outlet is provided in the middle section of the crankcase, the first air outlet is away from the fan assembly, a second air outlet is provided at the connection between the cylinder head and the cylinder, and the second air outlet is located above the first air outlet.

[0014] A further improved solution is: the air compressor includes a foot pad and a roller arranged below the air storage tank, and the foot pad and the roller are arranged at the front and rear sides of the air storage tank along the travel direction of the air compressor.

[0015] Compared with the prior art, the utility model has the following beneficial effects: by improving the distance from the air inlet edge to the fan blade edge, the air inlet effect is improved while the air inlet area remains unchanged, the air inlet demand is effectively met, and the cooling efficiency of the air compressor is improved. Specifically, in the radial direction of the fan assembly, by setting the distance between the air inlet edge and the fan blade edge to be no more than 15 mm, and the length of the fan blade edge from the center of the fan body to be greater than the length of the air inlet edge from the center of the hood body, the air inlet area is optimized and the air inlet effect is good; in addition, a grid is set on the hood assembly to effectively block foreign hard objects from being sucked in, and prevent hard objects from contacting the rotating fan assembly and causing damage. [Drawings]

[0016] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the air compressor of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the cooperation of the fan assembly and the wind cover assembly in the air compressor of the utility model at a first angle;

[0019] Figure 3 yes Figure 2 A schematic structural diagram of a second angle of cooperation between the fan assembly and the wind shield assembly shown;

[0020] Figure 4 yes Figure 2 An exploded schematic diagram of the fan assembly and the fan guard assembly is shown.

[0021] Meaning of the reference numerals in the figures:

[0022] Air compressor 100 Air tank 1

[0023] Cylinder assembly 2 Crankcase 21

[0024] Cylinder 22 Cylinder head 23

[0025] First air outlet 24 Second air outlet 25

[0026] Fan assembly 3 Fan body 31

[0027] Fan blade 32 Fan blade edge 321

[0028] Wind shield assembly 4 Wind shield body 41

[0029] Air inlet 42 Air inlet edge 421

[0030] Straight grid 43 Circular grid 44

[0031] Mounting portion 45 Silencer 5

[0032] Capacitor box 6 Control component 7

[0033] Foot pad 8 Roller 9

[0034] Handle assembly 10 Frame handle 11

[0035] Extended handle 12 [Specific implementation method]

[0036] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the words "upper", "lower", "front", "back", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0037] See also Figure 1 As shown, an embodiment of the utility model relates to an air compressor 100, which includes an air tank 1, a capacitor box 6 installed on the outer surface of the air tank 1, a cylinder assembly 2 and a control assembly 7 arranged above the air tank 1, a wind cover assembly 4 connected to the cylinder assembly 2, a motor assembly (not shown) and a drive assembly (not shown) accommodated in the cylinder assembly 2, a fan assembly 3 installed at both ends of the motor assembly, a silencer 5 connected to the cylinder assembly 2, a foot pad 8 and a roller 9 installed at the bottom of the air tank 1, and a handle assembly 10 fixed to the left side of the air tank 1 and close to the edge. The wind cover assembly 4 can prevent large particles of impurities in the environment from being sucked into the cylinder assembly 2 and thereby damaging the fan assembly 3, and at the same time, can effectively guide cooling wind to the motor assembly, with a good cooling effect. The capacitor box 6 is electrically connected to the control component 7 , and the control component 7 controls the motor component. The motor component drives the drive component to reciprocate in the cylinder component 2 to compress the external gas and store it in the gas storage tank 1 .

[0038] Specifically, the gas tank 1 is roughly cylindrical in shape, the cylinder assembly 2 and the control assembly 7 are located at the two ends of the upper side of the gas tank 1, the foot pad 8 and the roller 9 are arranged below the gas tank 1, the foot pad 8 and the roller 9 are arranged at the front and rear sides of the gas tank 1 along the travel direction of the air compressor 100, and the foot pad 8 and the handle assembly 10 are both located on the left side of the gas tank 1. The foot pad 8 is preferably made of rubber material. When the air compressor 100 is working, the rubber foot pad 8 can absorb the vibration of the air compressor 100 when it is working, reduce the noise during work, and is not easy to damage the floor when it is in direct contact with the floor; in addition, when the air compressor 100 is stationary on the ground, the foot pad 8 can limit the movement of the roller 9. The roller 9 is provided for changing the work location without moving the heavy air compressor 100. The user only needs to pull the handle assembly 10 upwards to make the foot pad 8 leave the ground, and then the air compressor 100 can be moved in the front and rear directions via the roller 9. The operation is simple and convenient for the user.

[0039] See also Figure 1As shown, the handle assembly 10 includes a frame handle 11 fixed to the gas tank 1 and an extended handle 12 connected to the frame handle 11, and the extended handle 12 is detachably mounted on the frame handle 11 in the form of a buckle. The frame handle 11 can be fixed to the gas tank 1 by welding, and the present application does not limit the connection method of the frame handle 11, as long as the frame handle 11 can be reliably fixed to the gas tank 1.

[0040] Preferably, the extended handle 12 is made of plastic, which is lighter than a general iron extended handle, effectively reducing the weight of the air compressor 100 and reducing production costs.

[0041] See also Figure 1 As shown, the cylinder assembly 2 includes a crankcase 21 for accommodating the motor assembly and the fan assembly 3, two cylinders 22 arranged above the crankcase 21, and a cylinder head 23 connected to the two cylinders 22. The silencer 5 is installed between the two cylinder heads 23 to prevent the silencer 5 from being damaged by collision during operation, and effectively improves the noise generated by the air compressor 100 during operation.

[0042] Please refer to Figures 2 to 4 As shown, the fan assembly 3 is connected to the cylinder assembly 2, and the wind shield assembly 4 is arranged on the outside of the fan assembly 3. The fan assembly 3 includes a fan body 31 and a plurality of blades 32 evenly distributed along the circumference of the fan body 31. The blades 32 have a blade edge 321 farthest from the center of the fan body 31. The wind shield assembly 4 includes a wind shield body 41 and an air inlet 42 penetrating the wind shield body 41. The air inlet 42 has an air inlet edge 421 farthest from the center of the wind shield body 41. In the radial direction of the fan assembly 3, the distance between the air inlet edge 421 and the blade edge 321 is not greater than 15 mm. By improving the distance from the air inlet edge 421 to the blade edge 321, the air inlet effect is improved without changing the air inlet area, and the air inlet demand is effectively met, thereby improving the cooling efficiency of the air compressor 100.

[0043] Furthermore, the distance between the air inlet edge 421 and the fan blade edge 321 is no more than 10 mm.

[0044] In this embodiment, the length of the blade edge 321 from the center of the fan body 31 is greater than the length of the air inlet edge 421 from the center of the wind cover body 41, that is, the diameter of the air inlet 42 is smaller than the diameter of the fan body 31, which is beneficial to reduce the damage of external impurities to the fan assembly 3.

[0045] The wind shield assembly 4 includes a plurality of straight grids 43 and circular grids 44, and the straight grids 43 and the circular grids 44 separate the air inlet 42. The straight grids 43 are symmetrically distributed around the center of the wind shield body 41, and the circular grids 44 are equidistantly distributed around the center of the wind shield body 41 in the form of concentric circles. By arranging the grids on the wind shield assembly 4, it is effectively prevented that hard objects from the outside are sucked in, and that the hard objects are prevented from contacting with the rotating fan assembly 3 and causing damage.

[0046] In this embodiment, six straight grids 43 are provided, and the angle formed by any two adjacent straight grids 43 is 60°. In other embodiments, the number of straight grids 43 may be 4 or 8, and the angle formed by any two adjacent straight grids 43 is 90° or 45°, as long as the straight grids 43 are symmetrically distributed around the center of the hood body 41.

[0047] Furthermore, two circular grids 44 are provided. In other embodiments, the number of the circular grids 44 may also be three or four, as long as the circular grids 44 are distributed equidistantly in concentric circles with the center of the wind shield body 41.

[0048] The wind shield assembly 4 also includes a mounting portion 45 disposed on the outer edge of the wind shield body 41 , and the mounting portion 45 is installed in cooperation with the crankcase 21 . In the present embodiment, the mounting portion 45 is a snap-fit ​​structure to facilitate the disassembly and installation of the wind shield assembly 4 .

[0049] The middle section of the crankcase 21 is provided with a first air outlet 24, which is far away from the fan assembly 3. The connection between the cylinder head 23 and the cylinder 22 is provided with a second air outlet 25, which is located above the first air outlet 24. The cooling air enters from the air inlets 42 at both ends, passes through the motor assembly and the cylinder assembly 2, and is then blown out from the first air outlet 24 and the second air outlet 25, which effectively meets the heat dissipation requirements.

[0050] By improving the distance between the air inlet edge 421 and the fan blade edge 321, the air inlet effect is improved while the air inlet area remains unchanged, the air inlet demand is effectively met, and the cooling efficiency of the air compressor 100 is improved. Specifically, in the radial direction of the fan assembly 3, by setting the distance between the air inlet edge 421 and the fan blade edge 321 to be no more than 15 mm, and the length of the fan blade edge 321 from the center of the fan body 31 to be greater than the length of the air inlet edge 421 from the center of the fan cover body 41, the air inlet area is optimized and the air inlet effect is good; in addition, a grid is set on the fan cover assembly 4 to effectively block foreign hard objects from being sucked in, and prevent hard objects from contacting the rotating fan assembly 3 and causing damage.

[0051] The utility model is not limited to the above specific implementations. Those skilled in the art can easily understand that there are many other alternatives to the air compressor of the utility model without departing from the principle and scope of the utility model. The protection scope of the utility model shall be based on the content of the claims.

Claims

1. An air compressor, comprising an air storage tank, a cylinder assembly fixed above the air storage tank, a fan assembly connected to the cylinder assembly, and a hood assembly arranged outside the fan assembly, wherein the fan assembly comprises a fan body and a plurality of blades evenly distributed along the circumference of the fan body, wherein the blades have blade edges farthest from the center of the fan body, and the hood assembly comprises a hood body and an air inlet penetrating the hood body, wherein the air inlet has an air inlet edge farthest from the center of the hood body; characterized in that: In the radial direction of the fan assembly, the distance between the air inlet edge and the fan blade edge is no more than 15 mm.

2. The air compressor according to claim 1, characterized in that: The distance between the air inlet edge and the fan blade edge is no more than 10 mm.

3. The air compressor according to claim 1, characterized in that: The length of the blade edge from the center of the fan body is greater than the length of the air inlet edge from the center of the fan cover body.

4. The air compressor according to claim 1, characterized in that: The wind shield assembly includes a plurality of straight grids and circular grids, and the straight grids and the circular grids separate the air inlets.

5. The air compressor according to claim 4, characterized in that: The straight grids are symmetrically distributed around the center of the wind shield body, and the circular grids are equidistantly distributed around the center of the wind shield body in the form of concentric circles.

6. The air compressor according to claim 5, characterized in that: There are 6 straight grids, and the angle formed by any two adjacent straight grids is 60°. There are 2 circular grids.

7. The air compressor according to claim 1, characterized in that: The cylinder assembly comprises a crankcase for accommodating the fan assembly, two cylinders arranged above the crankcase and cylinder heads connected to the cylinders, and a silencer is arranged between the two cylinder heads.

8. The air compressor according to claim 7, characterized in that: The wind shield assembly comprises a mounting portion arranged on the outer edge of the wind shield body, and the mounting portion is mounted in cooperation with the crankcase.

9. The air compressor according to claim 7, characterized in that: A first air outlet is arranged in the middle section of the crankcase, and the first air outlet is far away from the fan assembly. A second air outlet is arranged at the connection between the cylinder head and the cylinder, and the second air outlet is located above the first air outlet.

10. The air compressor according to claim 1, characterized in that: The air compressor comprises a foot pad and a roller arranged below the air storage tank, and the foot pad and the roller are arranged at the front and rear sides of the air storage tank along the moving direction of the air compressor.

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