Fan for air compressor and air compressor

Abstract

The utility model provides a fan for an air compressor and the air compressor, relates to the technical field of air compressors, solves the technical problem that an existing fan cannot operate when an installation space of the fan in the prior art is in a step form, and adopts the technical scheme that the fan for the air compressor comprises a fan rotor 1 and fan blades 2, a plurality of fan blades 2 are arranged; the plane of an air outlet face outer ring 17 on one side of the air outlet face of the fan rotor 1 is lower than the plane of an air outlet face inner ring 16 on one side of the air outlet face, and the plane generated when the fan blades 2 rotate is equal to or lower than the plane of the air outlet face outer ring 17. An inner ring through hole 14 is formed in the center of the air outlet face inner ring 16, and a rotor shaft of the air compressor is tightly attached to the outer wall of the inner ring through hole 14. According to the scheme provided by the utility model, the plane of the outer ring 17 and the plane of the inner ring 16 are in a stepped form, so that the abrasion caused by relative friction between the outer ring 17 and the bearing outer ring, the bearing dust cover of the air compressor and the shell of the air compressor is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compressor technical field especially relates to a fan for air compressor and air compressor. BACKGROUND

[0002] This section aims to provide background or context for the embodiments of the utility model recited in the claims. The description herein can include concepts that can be pursued, but are not necessarily prior to the application. Therefore, unless otherwise indicated herein, statements in this section are not prior art to the description and claims of this application, and are not admitted to be prior art by inclusion in this section.

[0003] Air compressor is a kind of equipment that converts mechanical energy into gas pressure energy, it is usually driven by motor, for compressing air. The main function of air compressor is to convert low-pressure gas into high-pressure gas, and it is widely used in various industrial and civil fields.

[0004] Air compressor is widely used in industrial field, and fan is also essential as one of auxiliary parts. When installing fan, the traditional compressor usually reserves a specified size space for fan, but with the need of miniaturization, sometimes the space reserved for fan is not ideal, there can be a space with ladder form, and in this space, the traditional fan is installed, and the fan part surface and the corresponding surface of compressor exist relative friction.

[0005] Therefore, when the installation space of fan is not ideal, how to ensure that the fan in air compressor can run, and the fan can also run normally and effectively is a technical problem to be solved. UTILITY MODEL CONTENT

[0006] To solve the technical problem that the existing fan cannot run when the installation space of fan is in ladder form in the prior art, the purpose of the utility model is to provide a fan for air compressor and air compressor.

[0007] To solve the above technical problem, in the first aspect, according to some embodiments, the utility model provides a fan for air compressor, which comprises:

[0008] Fan rotor 1 and fan blade 2, the fan blade 2 has multiple, the fan blade 2 is integrally formed with the fan rotor 1;

[0009] The plane of the outflow face outer ring 17 on the outflow face side of the fan rotor 1 is lower than the plane of the outflow face inner ring 16 on the outflow face side, and the plane generated when the fan blade 2 rotates is equal to or lower than the plane of the outflow face outer ring 17;

[0010] The center of the air outlet surface inner ring 16 is an inner ring through hole 14, and the rotor shaft of the air compressor is close to the outer wall of the inner ring through hole 14, so as to realize synchronous rotation of the fan and the rotor shaft of the air compressor and axial positioning of the fan.

[0011] Optionally, in some embodiments, the air outlet surface outer ring 17 of the fan rotor 1 has a groove between the plane and the air outlet surface inner ring 16 on one side of the air outlet surface.

[0012] Optionally, in some embodiments, the air outlet surface inner ring 16 is away from the bearing inner ring of the air compressor.

[0013] Optionally, in some embodiments, the air outlet surface inner ring 16 is close to the bearing inner ring of the air compressor.

[0014] Optionally, in some embodiments, the side wall of the through hole 14 also has a clamping groove 15 which is tightened with the tightening of the spring clamp of the air compressor.

[0015] Optionally, in some embodiments, the plane of the air inlet surface outer ring 12 of the fan rotor 1 is flush with or lower than the outer edge of the air compressor.

[0016] The plane of the air inlet surface inner ring 13 of the fan rotor 1 is lower than the plane of the plane of the air inlet surface outer ring 12.

[0017] Optionally, in some embodiments, the inner ring through hole 14 is also provided with a flat position 18.

[0018] Optionally, in some embodiments, the thickness of any surface of the fan rotor 1 is not less than 1mm.

[0019] Optionally, in some embodiments, the rotor shaft of the air compressor passes through the inner ring through hole 14, and the rotor shaft is close to the end surface of the fan and is lower than or equal to the plane of the air inlet surface outer ring 12.

[0020] In a second aspect, the embodiments of the utility model also provide an air compressor which adopts the fan of any one of the above-mentioned first aspect, comprising: a first fan 3 and a second fan 4.

[0021] The first fan 3 and the second fan 4 are the air compressor fan of any one of the above-mentioned first aspect.

[0022] The fan blades of the first fan 3 and the second fan 4 are located on the same horizontal line in the air compressor, and the fan blades of the first fan 3 and the second fan 4 are oppositely arranged, so that when the first fan 1 and the second fan 2 rotate, the air directions of the first fan 1 and the second fan 2 are both towards the air compressor.

[0023] The above technical solutions of the utility model have at least the following beneficial technical effects:

[0024] The plane of the air-outlet-face outer ring 17 on the air-outlet-face side of the fan rotor 1 is lower than the plane of the air-outlet-face inner ring 16 on the air-outlet-face side, and the plane generated when the fan blade 2 rotates is lower than the plane of the air-outlet-face outer ring 17, the plane of the air-outlet-face outer ring 17, the plane of the air-outlet-face inner ring 16, and the plane generated when the fan blade 2 rotates are in a stepped form, which can effectively prevent the air-outlet-face outer ring 17 from being abraded by relative friction with the bearing outer ring of the air compressor, the bearing dust cover of the air compressor, and the shell of the air compressor (which are static), and further solve the problem that when the reserved space is stepped, the fan in the air compressor can be normally installed, and the fan can also normally and effectively operate. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or in the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0026] Figure 1 is an axial view of an air-inlet face of a fan for an air compressor provided by the utility model embodiments.

[0027] Figure 2 is an axial view of an air-outlet face of a fan for an air compressor provided by the utility model embodiments.

[0028] Figure 3 is a side view of a fan for an air compressor provided by the utility model embodiments.

[0029] Figure 4 is a front view of a fan for an air compressor provided by the utility model embodiments.

[0030] Figure 5 is a sectional view of a position of an air compressor fan provided by the utility model embodiments.

[0031] Corresponding relationship between the reference signs and the component names in the drawings is as follows: Figures 1 to 5

[0032] 1-fan rotor, 12-air-inlet-face outer ring, 13-air-inlet-face inner ring, 14-inner-ring through hole, 15-clamping groove, 16-air-outlet-face inner ring, 17-air-outlet-face outer ring, 18-flat position;

[0033] 2-fan blade; ​

[0034] 3 - first fan;

[0035] 4 - second fan. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. 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 scope of protection of the present application.

[0037] In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0038] If the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features; the technical solutions of various embodiments can be combined with each other, based on the realization of those skilled in the art.

[0039] In the embodiments of the present application, when referring to A and / or B, it means A, B, and A and B.

[0040] It should be noted that the serial numbers of the sequence mentioned in the present application do not necessarily represent the strict execution of the sequence in the actual specific implementation process. The serial numbers are used to distinguish each step, so as to prevent confusion.

[0041] In the drawings, a layer structure schematic diagram according to the embodiments of the present application is shown. These drawings are not drawn to scale, in which some details are enlarged for the purpose of clarity, and some details can be omitted. The shapes of various regions, layers shown in the drawings and their relative size, position relationship are only exemplary, and in actuality, there can be deviations due to manufacturing tolerances or technical limitations, and those skilled in the art can additionally design regions / layers with different shapes, sizes, relative positions according to actual needs.

[0042] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0043] Currently, traditional compressor impellers are typically installed with the impeller surface flush with or slightly below the shaft end. This means they are installed flush with other components (which affects air volume) and avoid friction with other components. However, due to space constraints in newer compressors, the casings are equipped with retaining rings and sealed bearings. Therefore, when traditional impellers are installed flush with the sealed bearings, the fan rotor will rub against the compressor casing, bearing seal cap, and outer ring, leading to wear.

[0044] In order to solve the above problems, an embodiment of the present invention provides a fan for an air compressor, such as Figures 1 to 5 As shown, including:

[0045] A fan rotor 1 and blades 2, wherein the blades 2 are multiple and are integrally formed with the fan rotor 1;

[0046] The plane of the outer ring 17 of the wind outlet surface of the fan rotor 1 on the wind outlet side is lower than the plane of the inner ring 16 of the wind outlet surface on the wind outlet side, and the plane generated by the fan blade 2 when rotating is equal to or lower than the plane of the outer ring 17 of the wind outlet surface;

[0047] The center of the inner ring 16 of the air outlet surface is the inner ring through hole 14, and the inner ring through hole 14 can be used to hold the rotor shaft of the air compressor. The rotor shaft of the air compressor is close to the outer wall of the inner ring through hole 14, which is used to achieve synchronous rotation of the fan and the rotor shaft of the air compressor and axial positioning of the fan.

[0048] Specifically, refer to Figure 1 and Figure 2 As shown, Figure 1 This is an axonometric view of the air inlet surface of an air compressor fan. Figure 2 This is an axonometric view of the air outlet surface of a fan for an air compressor, wherein the fan blades 2 have 7. The number of the fan blades is not limited here, and those skilled in the art can set different numbers according to specific actual needs.

[0049] The center of the inner ring 16 of the air outlet surface is the inner ring through-hole 14. The air compressor rotor shaft is in close contact with the outer wall of the inner ring through-hole 14. During assembly, the air compressor rotor shaft also closely contacts the inner ring of the bearing, achieving synchronous rotation of the fan and the air compressor rotor shaft and axial positioning of the fan. The inner ring of the air compressor bearing also rotates synchronously with the fan rotor 1 and blades 2, so the flat surface of the air outlet surface outer ring 17 and one side of the bearing do not rub against each other and wear.

[0050] The plane of the air-outlet-face outer ring 17 on the air-outlet-face side of the fan rotor 1 is lower than the plane of the air-outlet-face inner ring 16 on the air-outlet-face side, and the plane generated when the fan blade 2 rotates is equal to or lower than the plane of the air-outlet-face outer ring 17. The planes of the air-outlet-face outer ring 17, the air-outlet-face inner ring 16, and the plane generated when the fan blade 2 rotates are in a stepped form, which can effectively prevent the air-outlet-face outer ring 17 from being abraded by relative friction with the bearing outer ring of the (stationary) air compressor, the bearing dust cover of the air compressor, and the housing of the air compressor. In addition, when the reserved space is in a stepped form, the fan in the air compressor can be normally installed, and the fan can also be normally and effectively operated.

[0051] Optionally, as one of the embodiments, the plane of the air-inlet-face outer ring 12 of the fan rotor 1 is flush with or lower than the outer edge of the air compressor.

[0052] The plane of the air-inlet-face inner ring 13 of the fan rotor 1 is lower than the plane of the air-inlet-face outer ring 12.

[0053] The plane of the air-inlet-face outer ring 12 of the fan rotor 1 is flush with or lower than the outer edge of the air compressor, which can be referred to as Figure 5 As shown, the air-inlet-face outer ring 12 at the outermost edge of the air compressor sucks the air in the atmosphere into the air compressor, and can also be lower than the outer edge of the air compressor to reserve space.

[0054] The plane of the air-inlet-face inner ring 13 of the fan rotor 1 is lower than the plane of the air-inlet-face outer ring 12, which facilitates the positioning of the blade by the positioning surface of the tool when the blade is installed by the tool. Therefore, the plane of the air-inlet-face inner ring 13 being lower than the plane of the air-inlet-face outer ring 12 ensures the rapid installation of the process from the product structure and ensures the correct installation.

[0055] Optionally, as one of the embodiments, the side wall of the through hole further has a clamping groove 15 which is tightened with the tightening of the spring hoop.

[0056] Optionally, as one of the embodiments, the plane of the air-outlet-face outer ring 17 of the fan rotor 1 has a groove between the air-outlet-face inner ring 16 on the air-outlet-face side.

[0057] Optionally, as one of the embodiments, the air-outlet-face inner ring 16 has a certain distance from the bearing inner ring of the air compressor.

[0058] Optionally, as one of the embodiments, the air-outlet-face inner ring 16 is flush with the bearing inner ring of the air compressor.

[0059] If the air outlet surface inner ring 16 is in close contact with the bearing inner ring of the air compressor, it can further rotate coaxially with the bearing; the air outlet surface inner ring 16 has a certain distance from the bearing inner ring of the air compressor, because the rotor shaft of the air compressor is in close contact with the outer wall of the inner ring through hole 14, and the rotor shaft is in close contact with the inner wall of the bearing, therefore, the fan and the bearing can still rotate synchronously.

[0060] If the air outlet surface inner ring 16 has a certain distance from the bearing inner ring of the air compressor, during assembly, a tool can be used, the radial surface of the air inlet surface outer ring 12 and the air inlet surface inner ring 13 is used as the tool positioning, and the rotor shaft end surface is used as the reference surface to assemble (when using the tool to assemble, the tool final stop surface).

[0061] Reference Figures 1 to 2 As shown, the space of the groove is used for installing the spring clamp, the axial positioning of the spring clamp is realized, and the fan can be fixed in the air compressor. When the spring clamp is installed, the clamping groove 15 can be tightened with the spring clamp.

[0062] The clamping groove 15 is generally 4, and the slotting purpose is that the clamping groove 15 can be tightened with the spring clamp, so that the fan blade 2 can be tightly clamped on the rotor shaft (loosely clamped on the rotor shaft).

[0063] Optionally, as one of the embodiments, the inner ring through hole 14 is further provided with a flat position 18.

[0064] Reference Figure 4 As shown, the function of the flat position 18 is that the flat position 18 can be aligned with the flat position of the rotor shaft of the air compressor during installation, or can not be aligned, which depends on the relationship between the two. If the interference is too large, the air compressor fan cannot be used again after being disassembled, and the flat position 18 can effectively solve the problem that the fan blade and the rotor shaft are not synchronous in rotation.

[0065] Optionally, as one of the embodiments, the thickness of any surface of the fan rotor 1 is not less than 1mm.

[0066] The embodiment of the utility model further provides an air compressor, which comprises: a first fan 3 and a second fan 4.

[0067] The first fan 3 and the second fan 4 are the air compressor fan of any one of the above embodiments.

[0068] The fan blade of the first fan 3 and the fan blade 4 of the second fan 4 are located on the same horizontal line in the air compressor, and the fan blade of the first fan 3 and the fan blade of the second fan 4 are oppositely arranged, so that when the first fan 1 and the second fan 2 rotate, the air direction is all sent to the inside of the air compressor.

[0069] Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0070] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A fan for an air compressor, characterized in that: include: A fan rotor (1) and fan blades (2), wherein the fan blades (2) are multiple and the fan blades (2) and the fan rotor (1) are integrally formed; The plane of the outer ring (17) of the wind outlet surface on the wind outlet side of the fan rotor (1) is lower than the plane of the inner ring (16) of the wind outlet surface on the wind outlet side, and the plane generated by the fan blade (2) when rotating is equal to or lower than the plane of the outer ring (17) of the wind outlet surface; The center of the inner ring (16) of the air outlet surface is the inner ring through hole (14), and the rotor shaft of the air compressor is in close contact with the outer wall of the inner ring through hole (14), so as to realize the synchronous rotation of the fan and the rotor shaft of the air compressor and to position the fan in the axial direction.

2. The air compressor fan according to claim 1, wherein A groove is provided between the plane of the outer ring (17) of the air outlet surface of the fan rotor (1) and the inner ring (16) of the air outlet surface on one side of the air outlet surface.

3. The air compressor fan according to claim 2, wherein: The inner ring (16) of the air outlet surface is at a certain distance from the inner ring of the bearing of the air compressor.

4. The fan for an air compressor according to claim 2, wherein: The inner ring (16) near the air outlet surface is flush with the inner ring of the bearing of the air compressor.

5. The fan for an air compressor according to claim 1, wherein The side wall of the through hole (14) further comprises a clamping groove (15), and the clamping groove (15) is tightened as the spring clamp of the air compressor is tightened.

6. The air compressor fan according to claim 1, wherein: The plane of the outer ring (12) of the air inlet surface of the fan rotor (1) is flush with or lower than the outer edge of the air compressor; The plane of the inner ring (13) of the air inlet surface of the fan rotor (1) is lower than the plane of the outer ring (12) of the air inlet surface.

7. The fan for an air compressor according to claim 1, wherein The inner ring through hole (14) is also provided with a flat portion (18).

8. The fan for an air compressor according to claim 1, wherein The thickness of any surface of the fan rotor (1) is not less than 1 mm.

9. The air compressor fan according to claim 6, wherein: The rotor shaft of the air compressor passes through the inner ring through hole (14), and the rotor shaft is close to the end face of the fan and is lower than or equal to the plane of the outer ring (12) of the air inlet surface.

10. An air compressor, characterized in that: include: a first fan (3), a second fan (4); The first fan (3) and the second fan (4) are fans for air compressors according to any one of claims 1 to 8; The blades (2) of the first fan (3) and the blades (2) of the second fan (4) are located on the same horizontal line inside the air compressor, and the blades of the first fan (3) and the blades of the second fan (4) are arranged in opposite directions to each other, so that when the first fan (3) and the second fan (4) rotate, the wind direction is to supply air to the inside of the air compressor.

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