A DC cooling fan for refrigerator

Abstract

The utility model relates to the technical field of DC cooling fans, and discloses a DC cooling fan for refrigerators, including a ventilation duct, a cooling component is slidably connected inside the ventilation duct, a placement slot is provided on the upper side of the cooling component, a first filter is slidably connected inside the placement slot, a pull rod is fixedly connected to the upper side of the first filter, blocks are fixedly connected to both sides of the first filter, a groove is provided on the rear side of the placement slot, a telescopic rod is fixedly connected inside the groove, a spring is provided on the outside of the telescopic rod, and a fixed rod is fixedly connected to the output end of the telescopic rod. In the utility model, impurities can be effectively filtered to prevent impurities from entering the DC cooling fan, and the first filter can be easily disassembled and installed, and the noise reduction function of the cooling fan can be increased, the noise generation can be reduced, and the practicality of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current cooling fans, in particular to a direct current cooling fan used in a refrigerator. Background Art

[0002] A DC cooling fan for a refrigerator is a fan device specially designed for a refrigerator and is used to improve the heat dissipation efficiency of the refrigerator and the working performance of the refrigeration system.

[0003] After searching, Chinese patent announcement number: CN213116778U discloses a blower DC cooling fan, including fan blades, a driving motor, a first shell and a second shell, the bottom ends of the first shell are fixedly connected to the top ends of the support rods, the bottom ends of the support rods are fixedly connected to the top sides of the second shell, a fixing block is installed in the middle part of the second shell, the fixing block is fixedly connected to one end of the blade plate equidistantly around, the other end of the blade plate is fixedly connected to the inner side of the second shell, a bolt is installed in the middle part of the fixing block, one side of the fixing block is fixedly connected to one end of the driving motor, the middle part of the other end of the driving motor is fixedly connected to one end of the shaft rod, the shaft rod is fixedly connected to one end of the fan blade equidistantly around, square holes are installed around the first shell and the second shell, screw holes are installed around the second shell and the first shell, a groove is installed in the middle part of the second shell, and the groove is embedded and connected with the frame around. The utility model has a simple structure and is easy to operate, but the above device does not have the function of preventing impurities from entering, resulting in excessive impurities inside the DC cooling fan when in use, causing the DC cooling fan to be easily damaged, thereby shortening the service life of the DC cooling fan and being inconvenient for users. Therefore, a DC cooling fan for a refrigerator is proposed to solve the above problem. Summary of the invention

[0004] The utility model aims to solve the problem that the prior art has no function of preventing impurities from entering, resulting in excessive internal impurities in the DC cooling fan when in use, causing the DC cooling fan to be easily damaged, and proposes a DC cooling fan for a refrigerator.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a DC cooling fan for a refrigerator, comprising a ventilation duct, a cooling component is slidably connected inside the ventilation duct, a placement groove is provided on the upper side of the cooling component, a first filter is slidably connected inside the placement groove, a pull rod is fixedly connected on the upper side of the first filter, blocks are fixedly connected on both sides of the first filter, a groove is provided on the rear side of the placement groove, a telescopic rod is fixedly connected inside the groove, a spring is provided on the outside of the telescopic rod, a fixed rod is fixedly connected to the output end of the telescopic rod, a moving block is fixedly connected to the far side of the fixed rod, and the fixed rod is slidably connected to the inside of the block.

[0006] As a further description of the above technical solution:

[0007] The heat dissipation assembly includes a fixing frame, which is slidably connected to the inside of the ventilation duct, and mounting plates are fixedly connected to both sides of the fixing frame, and the mounting plates are connected to the ventilation duct through bolts, and a motor is fixedly connected to the rear side of the fixing frame, and a fan blade is fixedly connected to the output end of the motor.

[0008] As a further description of the above technical solution:

[0009] A shell is fixedly connected to the rear side of the fixing frame. The shell is sleeved on the outside of the motor. A sound insulation component is arranged inside the shell. A fan is arranged inside the sound insulation component.

[0010] As a further description of the above technical solution:

[0011] The sound insulation component comprises a sound insulation layer, the sound insulation layer is arranged inside the shell, sound-absorbing cotton is arranged inside the sound insulation layer, and an exhaust port is opened on the rear side of the shell.

[0012] As a further description of the above technical solution:

[0013] Slide grooves are provided on both sides of the ventilation duct, and moving blocks are slidably connected inside the slide grooves.

[0014] As a further description of the above technical solution:

[0015] The card block is slidably connected inside the placement slot.

[0016] As a further description of the above technical solution:

[0017] One end of the spring is fixedly connected to the inside of the groove, and the other end of the spring is fixedly connected to the rear side of the fixing rod.

[0018] As a further description of the above technical solution:

[0019] A second filter screen is arranged at the inner rear side of the ventilation duct.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by using the movable block, the slide groove, the card block, the fixed rod, the telescopic rod, the spring, the pull rod, the first filter, the placement groove and other structures in coordination with each other, it is possible to effectively filter impurities, prevent impurities from entering the DC cooling fan, and facilitate the disassembly and installation of the first filter.

[0022] 2. In the utility model, by using the sound insulation layer, sound-absorbing cotton, exhaust port, fan and other structures in coordination, the noise reduction function of the cooling fan can be increased, the noise generation can be reduced, and the practicality of the device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view of a DC cooling fan for a refrigerator proposed by the utility model;

[0024] Figure 2 This is a rear view of a DC cooling fan for a refrigerator proposed by the utility model;

[0025] Figure 3 This is a cross-sectional view of a DC cooling fan for a refrigerator proposed by the utility model;

[0026] Figure 4 This is an internal structure diagram of a DC cooling fan for a refrigerator proposed by the utility model;

[0027] Figure 5 The utility model is a cross-sectional view of a shell of a DC cooling fan for a refrigerator.

[0028] Legend:

[0029] 1. Ventilation duct; 2. Fixing frame; 3. Mounting plate; 4. Bolt; 5. Motor; 6. Fan blade; 7. Placement slot; 8. First filter; 9. Pull rod; 10. Groove; 11. Telescopic rod; 12. Spring; 13. Fixing rod; 14. Moving block; 15. Slide; 16. Block; 17. Shell; 18. Sound insulation layer; 19. Sound-absorbing cotton; 20. Exhaust port; 21. Fan; 22. Second filter. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1 , Figure 3 , Figure 4, the utility model provides an embodiment: a DC cooling fan for a refrigerator, comprising a ventilation duct 1, a heat dissipation component is slidably connected inside the ventilation duct 1, a placement groove 7 is provided on the upper side of the heat dissipation component, a first filter 8 is slidably connected inside the placement groove 7, a pull rod 9 is fixedly connected to the upper side of the first filter 8, and blocks 16 are fixedly connected on both sides of the first filter 8, a groove 10 is provided on the rear side of the placement groove 7, a telescopic rod 11 is fixedly connected inside the groove 10, a spring 12 is arranged on the outside of the telescopic rod 11, a fixed rod 13 is fixedly connected to the output end of the telescopic rod 11, a moving block 14 is fixedly connected to the side away from the fixed rod 13, and the fixed rod 13 is slidably connected to the inside of the block 16; the heat dissipation component comprises a fixed frame 2, the fixed frame 2 is slidably connected to the inside of the ventilation duct 1, both sides of the fixed frame 2 are fixedly connected to mounting plates 3, the mounting plate 3 is connected to the ventilation duct 1 through bolts 4, a motor 5 is fixedly connected to the rear side of the fixed frame 2, and a fan blade 6 is fixedly connected to the output end of the motor 5.

[0032] By starting the motor 5 to drive the fan blades 6 to rotate, the gas enters the ventilation duct 1, the first filter 8 filters the gas, and then enters the second filter 22 from the ventilation duct 1 and is discharged. By manually moving the moving block 14, the moving block 14 moves to drive the fixed rod 13 to disengage from the inside of the block 16. While the fixed rod 13 moves, it squeezes the telescopic rod 11 and the spring 12. The moving pull rod 9 drives the first filter 8 and the block 16 to disengage from the inside of the placement groove 7, thereby effectively filtering impurities.

[0033] Reference Figure 4 , Figure 5 A shell 17 is fixedly connected to the rear side of the fixing frame 2. The shell 17 is sleeved on the outside of the motor 5. A sound insulation component is arranged inside the shell 17. A fan 21 is arranged inside the sound insulation component. The sound insulation component includes a sound insulation layer 18. The sound insulation layer 18 is arranged inside the shell 17. Sound-absorbing cotton 19 is arranged inside the sound insulation layer 18. An exhaust port 20 is opened on the rear side of the shell 17.

[0034] The sound insulation layer 18 is made of glass fiber cotton, which has good sound insulation effect. The sound-absorbing cotton 19 can effectively reduce the spread of noise. The exhaust port 20 and the fan 21 can dissipate heat for the motor 5 during operation, thereby increasing the noise reduction function of the cooling fan.

[0035] Reference Figure 1 , Figure 2 , Figure 3A slide groove 15 is provided on both sides of the ventilation duct 1, and a moving block 14 is slidably connected inside the slide groove 15; a clamping block 16 is slidably connected inside the placement groove 7; one end of the spring 12 is fixedly connected inside the groove 10, and the other end of the spring 12 is fixedly connected to the rear side of the fixing rod 13; a second filter screen 22 is provided on the rear side of the interior of the ventilation duct 1.

[0036] Slide grooves 15 are provided on both sides of the ventilation duct 1, and a moving block 14 is slidably connected inside the slide groove 15, which facilitates the movement of the fixing rod 13; the clamping block 16 is slidably connected to the inside of the placement groove 7, which facilitates the fixation of the first filter 8; one end of the spring 12 is fixedly connected to the inside of the groove 10, and the other end of the spring 12 is fixedly connected to the rear side of the fixing rod 13, which drives the fixing rod 13 to rebound; a second filter 22 is provided on the rear side of the inside of the ventilation duct 1 to prevent dust from entering the ventilation duct 1.

[0037] Working principle: When using the device, the motor 5 is started, and the motor 5 starts to drive the fan blades 6 to rotate, driving the gas to enter the first filter 8, and the first filter 8 filters the gas. The filtered gas enters the ventilation duct 1, and then enters the second filter 22 from the ventilation duct 1 to be discharged. When the first filter 8 is cleaned, the moving block 14 is manually moved to slide in the slide groove 15. The movement of the moving block 14 drives the fixed rod 13 to disengage from the inside of the block 16. When the fixed rod 13 moves, it squeezes the telescopic rod 11 and the spring 12, and moves the pull rod 9. The pull rod 9 moves to drive the first filter 8 to move, and the second filter 8 is cleaned. A filter 8 moves to drive the block 16 out of the placement slot 7, so that impurities can be effectively filtered to prevent impurities from entering the DC cooling fan, and the first filter 8 can be easily disassembled and installed. When the motor 5 is operating, the sound insulation layer 18 is set, and the sound insulation layer 18 is made of glass fiber cotton. The sound insulation effect of this material is good and the service life is long. The sound-absorbing cotton 19 is set to effectively reduce the spread of noise, thereby achieving a silent effect. The exhaust port 20 and the fan 21 are set to dissipate the heat of the motor 5 during operation, thereby increasing the noise reduction function of the cooling fan, reducing the noise generation, and improving the practicability of the device.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A DC cooling fan for a refrigerator, comprising a ventilation duct (1), characterized in that: The ventilation duct (1) is slidably connected to a heat dissipation component inside, a placement groove (7) is provided on the upper side of the heat dissipation component, a first filter (8) is slidably connected inside the placement groove (7), a pull rod (9) is fixedly connected to the upper side of the first filter (8), and blocks (16) are fixedly connected to both sides of the first filter (8), a groove (10) is provided on the rear side of the placement groove (7), a telescopic rod (11) is fixedly connected inside the groove (10), a spring (12) is provided outside the telescopic rod (11), a fixed rod (13) is fixedly connected to the output end of the telescopic rod (11), a moving block (14) is fixedly connected to the far side of the fixed rod (13), and the fixed rod (13) is slidably connected inside the block (16).

2. A DC cooling fan for a refrigerator according to claim 1, characterized in that: The heat dissipation assembly comprises a fixing frame (2), the fixing frame (2) being slidably connected to the inside of the ventilation duct (1), a mounting plate (3) being fixedly connected to both sides of the fixing frame (2), the mounting plate (3) being connected to the ventilation duct (1) via bolts (4), a motor (5) being fixedly connected to the rear side of the fixing frame (2), and a fan blade (6) being fixedly connected to the output end of the motor (5).

3. A DC cooling fan for a refrigerator according to claim 2, characterized in that: A housing (17) is fixedly connected to the rear side of the fixing frame (2); the housing (17) is sleeved on the outside of the motor (5); a sound insulation component is arranged inside the housing (17); and a fan (21) is arranged inside the sound insulation component.

4. A DC cooling fan for a refrigerator according to claim 3, characterized in that: The sound insulation component comprises a sound insulation layer (18), the sound insulation layer (18) is arranged inside the shell (17), sound absorbing cotton (19) is arranged inside the sound insulation layer (18), and an exhaust port (20) is opened on the rear side of the shell (17).

5. A DC cooling fan for a refrigerator according to claim 1, characterized in that: Slide grooves (15) are provided on both sides of the ventilation duct (1), and a moving block (14) is slidably connected inside the slide groove (15).

6. A DC cooling fan for a refrigerator according to claim 1, characterized in that: The clamping block (16) is slidably connected inside the placement groove (7).

7. A DC cooling fan for a refrigerator according to claim 1, characterized in that: One end of the spring (12) is fixedly connected to the inside of the groove (10), and the other end of the spring (12) is fixedly connected to the rear side of the fixing rod (13).

8. A DC cooling fan for a refrigerator according to claim 1, characterized in that: A second filter screen (22) is provided on the inner rear side of the ventilation duct (1).

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