Ventilation fan of refrigerator compressor

Abstract

The utility model relates to a refrigerator compressor ventilation fan which comprises a machine frame and fan blades, a motor installation unit is arranged in the center of the machine frame, a motor is installed through the motor installation unit, and the fan blades are fixed on a driving shaft of the motor. The fan blade comprises a blade body, a support cylinder and a dustproof cylinder, the blade body is integrally formed on the outer circumferential wall of the support cylinder in an injection mode, a supporting plate is integrally formed on the inner side of the support cylinder in the radial direction in an injection mode, the dustproof cylinder is integrally formed on the supporting plate in an injection mode and located on the inner side of the support cylinder, and the shaft core line of the dustproof cylinder and the shaft core line of the support cylinder are located on the same straight line. A gap groove is formed between the support cylinder and the dustproof cylinder, and the cylinder wall of the motor installation unit is located in the gap groove. According to the utility model, the dustproof cylinder is arranged on the fan blade, the gap groove is formed between the dustproof cylinder and the support cylinder, and the cylinder wall of the motor mounting unit is located in the gap groove, so that the operation efficiency of the motor cannot be reduced due to dust accumulation, and the dustproof effect is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fans, and particularly relates to a ventilation fan for a refrigerator compressor. Background Art

[0002] There is a compressor in the refrigerator, and a condenser is connected to the compressor. During the operation of the compressor, the temperature will be relatively high. Usually, a ventilation fan is installed on the refrigerator body beside the compressor to reduce the temperature of the compressor. However, the compressors of refrigerators are basically located at the rear of the refrigerator body. During the placement of the refrigerator, the rear of the refrigerator is usually close to a wall or the like. In this way, during the operation of the ventilation fan, after a long time, a lot of dust will adhere between the support cylinder of the fan blade and the motor, resulting in a reduction in the operating efficiency, and more seriously, the ventilation fan may be damaged. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and to provide a ventilation fan for a refrigerator compressor with good dust-proof effect and capable of preventing the reduction of the operating efficiency of the motor.

[0004] The purpose of the utility model is achieved by the following technical solutions. This ventilation fan for a refrigerator compressor includes a frame and a fan blade. An electric motor mounting unit is provided at the central position of the frame, and an electric motor is mounted through the electric motor mounting unit. The fan blade is fixed on the driving shaft of the electric motor. The fan blade includes a blade, a support cylinder and a dust-proof cylinder. The blade is integrally injection-molded on the outer circumferential wall of the support cylinder. A support plate is integrally injection-molded radially inside the support cylinder. The dust-proof cylinder is integrally injection-molded on the support plate and is located inside the support cylinder, and the axis line of the dust-proof cylinder is on the same straight line as the axis line of the support cylinder. A gap groove is formed between the support cylinder and the dust-proof cylinder, and the cylinder wall of the electric motor mounting unit is located in the gap groove.

[0005] The beneficial effect of the utility model is: compared with the prior art, by providing a dust-proof cylinder on the fan blade, and a gap groove is formed between the dust-proof cylinder and the support cylinder, and the cylinder wall of the electric motor mounting unit is located in the gap groove. In this way, during the operation of the fan blade, dust will not enter the electric motor from the gap groove, and the dust will basically adhere to the support cylinder or the cylinder wall. In this way, the operating efficiency of the electric motor will not decrease due to the accumulation of dust, and the dust-proof effect is greatly improved.

[0006] Preferably, the height of the dust-proof cylinder is lower than the height of the support cylinder, and the height of the support cylinder is equal to the height of the cylinder wall. With such a structural design, the distance for dust to enter the inner side of the cylinder wall is greatly lengthened, thereby further improving the dust-proof effect.

[0007] Preferably, a plurality of limiting blocks are provided at the corner between the dust-proof cylinder and the inner side of the support plate. The plurality of limiting blocks are distributed at equal intervals in a surrounding manner along the center of the dust-proof cylinder. A plurality of guiding protrusions are provided on the inner side wall of the dust-proof cylinder. The plurality of guiding protrusions are distributed at equal intervals in a surrounding manner along the center of the dust-proof cylinder, and the limiting blocks and the guiding protrusions are distributed in one-to-one correspondence; the limiting blocks are located above the motor housing of the motor, and the guiding protrusions are located on the outer wall of the motor housing of the motor; through the setting of the above structure, by setting the limiting blocks, clearance limitation is obtained between the wind blade and the motor during the installation process. By setting the guiding protrusions, during the installation process of the wind blade and the motor, the guiding protrusions can achieve a guiding effect during the installation process, making the installation more convenient.

[0008] Preferably, circumferential reinforcing ribs and radial reinforcing ribs are provided on the outer side of the support plate. The circumferential reinforcing ribs are distributed at equal intervals in a divergent manner along the center of the support plate. The radial reinforcing ribs are distributed at equal intervals in a surrounding manner along the center of the support plate. One end of the radial reinforcing rib is connected to the inner side wall of the support cylinder, and the other end of the radial reinforcing rib is connected to the central protrusion of the support plate. And the driving shaft of the motor is fixed on the central protrusion of the support plate; through the setting of the above structure, the strength of the support plate is greatly increased, so that the stability of the driving shaft of the motor during the operation of driving the wind blade is better.

[0009] Preferably, the motor mounting unit includes a motor mounting bracket and four support frames. The four support frames are integrally injection-molded on the frame in a cross shape. The motor mounting bracket is integrally injection-molded at the central position of the four support frames, and the motor is mounted on the motor mounting bracket; by setting the four support frames, the stability of the motor mounting bracket is better, so that the stability of the wind blade during operation is better.

[0010] Preferably, the cylinder wall is integrally injection-molded on the outer circumferential side of the motor mounting bracket, and the motor is located inside the cylinder wall; in this way, the molding is more convenient, and the cooperation between the cylinder wall and the clearance groove is also more convenient, and the dust-proof effect on the motor is better.

[0011] Preferably, one of the four support frames communicates with the motor mounting bracket, and a wire blocking block for restricting the displacement of the communication line is provided on the support frame, and the wire blocking blocks are arranged along the length direction of the support frame and are distributed at equal intervals in a staggered manner; through the setting of the above structure, the arrangement of the communication line is more reasonable, the wiring is neater, and through the setting of the wire blocking block, the communication line will not break away from the support frame. Description of the Drawings

[0012] Figure 1It is a three-dimensional structural schematic diagram of the ventilation fan of the refrigerator compressor of the present utility model.

[0013] Figure 2 It is a front view sectional structural schematic diagram of the ventilation fan of the refrigerator compressor of the present utility model.

[0014] Figure 3 It is a three-dimensional front view structural schematic diagram of the impeller of the present utility model.

[0015] Figure 4 It is a three-dimensional rear view structural schematic diagram of the impeller of the present utility model.

[0016] The reference numerals in the drawings are respectively: 1, frame; 2, impeller; 3, motor mounting unit; 4, motor; 5, circumferential reinforcing rib; 6, radial reinforcing rib; 21, blade; 22, support cylinder; 23, dust-proof cylinder; 24, support plate; 25, clearance groove; 26, limit block; 27, guiding projection; 28, central projection; 31, cylinder wall; 32, motor mounting bracket; 33, support frame; 34, wire blocking block; 41, driving shaft; 42, motor housing. Detailed implementation manner

[0017] The following will introduce the present utility model in detail with reference to the drawings: As shown in the attached Figures 1 to 4 figure, the present utility model includes a frame 1 and an impeller 2. A motor mounting unit 3 is provided at the central position of the frame 1, and a motor 4 is installed through the motor mounting unit 3. The impeller 2 is fixed on the driving shaft 41 of the motor 4; the impeller 2 includes blades 21, a support cylinder 22 and a dust-proof cylinder 23. The blades 21 are integrally injection-molded on the outer circumferential wall of the support cylinder 22. A support plate 24 is integrally injection-molded radially inside the support cylinder 22. The dust-proof cylinder 23 is integrally injection-molded on the support plate 24 and is located inside the support cylinder 22, and the axis line of the dust-proof cylinder 23 is on the same straight line as the axis line of the support cylinder 22. A clearance groove 25 is formed between the support cylinder 22 and the dust-proof cylinder 23, and the cylinder wall 31 of the motor mounting unit 3 is located in the clearance groove 25. The support cylinder 22 and the dust-proof cylinder 23, and the blades 21 are integrally injection-molded on the outer circumferential wall of the support cylinder 22, and the support cylinder 22 together form a structure with a rectangular cross-section. When the cylinder wall 31 of the motor mounting unit 3 is located in the clearance groove 25, it prevents external dust from entering the motor 4 inside the dust-proof cylinder 23, greatly enhancing the dust-proof effect.

[0018] The height of the dust-proof cylinder 23 is lower than the height of the support cylinder 22, and the height of the support cylinder 22 is equal to the height of the cylinder wall 31. Through the setting of the limit block 26, when the cylinder wall 31 of the motor mounting unit 3 is located in the clearance groove 25, there is a certain gap between the cylinder wall 31 and the bottom of the clearance groove 25; this can not only enable the impeller 2 to rotate smoothly but also play a dust-proof role.

[0019] At the corner between the dust-proof cylinder 23 and the inner side of the support plate 24, a number of limiting blocks 26 are provided. The number of limiting blocks 26 is distributed at equal intervals in a surrounding manner along the center of the dust-proof cylinder 23. A number of guiding protrusions 27 are provided on the inner side wall of the dust-proof cylinder 23. The number of guiding protrusions 27 is distributed at equal intervals in a surrounding manner along the center of the dust-proof cylinder 23, and the limiting blocks 26 and the guiding protrusions 27 are distributed in a one-to-one correspondence; the limiting blocks 26 are located above the motor housing 42 of the motor 4, and the guiding protrusions 27 are located on the outer wall of the motor housing 42 of the motor 4.

[0020] On the outer side of the support plate 24, a circumferential reinforcing rib 5 and a radial reinforcing rib 6 are provided. The circumferential reinforcing rib 5 is distributed at equal intervals in a divergent manner along the center of the support plate 24. The radial reinforcing rib 6 is distributed at equal intervals in a surrounding manner along the center of the support plate 24. One end of the radial reinforcing rib 6 is connected to the inner side wall of the support cylinder 22, and the other end of the radial reinforcing rib 6 is connected to the central protrusion 28 of the support plate 24. And the drive shaft 41 of the motor 4 is fixed on the central protrusion 28 of the support plate 24.

[0021] The motor mounting unit 3 includes a motor mounting bracket 32 and four support frames 33. The four support frames 33 are integrally injection-molded on the frame 1 in a cross shape. The motor mounting bracket 32 is integrally injection-molded at the central position of the four support frames 33, and the motor 4 is mounted on the motor mounting bracket 32.

[0022] The cylinder wall 31 is integrally injection-molded on the outer circumferential side of the motor mounting bracket 32, and the motor 4 is located inside the cylinder wall 31.

[0023] One of the four support frames 33 is communicated with the motor mounting bracket 32, and a wire blocking block 34 for restricting the displacement of the communication line is provided on the support frame 33, and the wire blocking blocks 34 are arranged along the length direction of the support frame 33 and are distributed at staggered equal intervals.

[0024] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A refrigerator compressor ventilation fan, comprising a frame (1) and a fan blade (2), characterized in that: A motor mounting unit (3) is provided at the center of the frame (1), a motor (4) is mounted via the motor mounting unit (3), and the fan blade (2) is fixed on a driving shaft (41) of the motor (4); the fan blade (2) comprises a blade (21), a support tube (22) and a dustproof tube (23); the blade (21) is integrally injection-molded on the outer circumferential wall of the support tube (22); a support plate (24) is integrally injection-molded on the inner side of the support tube (22) in a radial direction; the dustproof tube (23) is integrally injection-molded on the support plate (24) and is located on the inner side of the support tube (22); an axial core line of the dustproof tube (23) is on the same straight line as an axial core line of the support tube (22); a gap groove (25) is formed between the support tube (22) and the dustproof tube (23); and a tube wall (31) of the motor mounting unit (3) is located in the gap groove (25).

2. The refrigerator compressor ventilation fan according to claim 1, characterized in that: The height of the dustproof cylinder (23) is lower than the height of the support cylinder (22), and the height of the support cylinder (22) is equal to the height of the cylinder wall (31).

3. The refrigerator compressor ventilation fan according to claim 1, characterized in that: A plurality of limit blocks (26) are provided at the corner between the dustproof cylinder (23) and the inner side of the support plate (24), and the plurality of limit blocks (26) are distributed at equal intervals around the center of the dustproof cylinder (23); a plurality of guide protrusions (27) are provided on the inner side wall of the dustproof cylinder (23), and the plurality of guide protrusions (27) are distributed at equal intervals around the center of the dustproof cylinder (23), and the limit blocks (26) and the guide protrusions (27) are distributed in a one-to-one correspondence; the limit blocks (26) are located above the motor housing (42) of the motor (4), and the guide protrusions (27) are located on the outer wall of the motor housing (42) of the motor (4).

4. The refrigerator compressor ventilation fan according to claim 1, characterized in that: The outer side of the support plate (24) is provided with an annular reinforcing rib (5) and a radial reinforcing rib (6); the annular reinforcing rib (5) is distributed at equal intervals along the center of the support plate (24) in a scattered manner; the radial reinforcing rib (6) is distributed at equal intervals along the center of the support plate (24) in a surrounding manner; one end of the radial reinforcing rib (6) is connected to the inner side wall of the support tube (22); the other end of the radial reinforcing rib (6) is connected to the central protrusion (28) of the support plate (24); and the drive shaft (41) of the motor (4) is fixed to the central protrusion (28) of the support plate (24).

5. The refrigerator compressor ventilation fan according to claim 1, characterized in that: The motor mounting unit (3) comprises a motor mounting bracket (32) and four support brackets (33); the four support brackets (33) are integrally injection-molded in a cross shape on the frame (1); the motor mounting bracket (32) is integrally injection-molded at a central position of the four support brackets (33); and the motor (4) is mounted on the motor mounting bracket (32).

6. The refrigerator compressor ventilation fan according to claim 5, characterized in that: The barrel wall (31) is integrally injection-molded on the outer circumferential side of the motor mounting bracket (32), and the motor (4) is located on the inner side of the barrel wall (31).

7. The refrigerator compressor ventilation fan according to claim 5, characterized in that: One of the four support frames (33) is in communication with the motor mounting bracket (32), and a line block (34) for limiting the displacement of the communication line is provided on the support frame (33), and the line block blocks (34) are arranged along the length direction of the support frame (33) and are distributed in a staggered and equidistant manner.

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