Centrifugal ventilator heat dissipation structure

Abstract

The utility model belongs to the technical field of centrifugal ventilators, and discloses a centrifugal ventilator heat dissipation structure which comprises a volute assembly and a heat dissipation assembly fixedly connected to the volute assembly, the heat dissipation assembly comprises a box body, the upper bottom face and the lower bottom face of the box body are each provided with a containing groove, and a water suction pump and a reflux pump are arranged in the containing groove in the upper bottom face of the box body. A first water pipe is connected to the water outlet end of the water suction pump, a third water pipe is further connected to the water inlet end of the water suction pump, a second water pipe is connected to the water inlet end of the reflux pump, the first water pipe and the second water pipe extend into the volute assembly, and the third water pipe extends into the box body; a refrigeration assembly is arranged in the box body, a pair of heat dissipation pieces are arranged in a containing groove in the lower bottom face of the box body, the output end of the reflux pump is communicated with the heat dissipation pieces through a first circulation pipeline, and the heat dissipation pieces are further communicated with the interior of the box body through a second circulation pipeline. According to the utility model, the purpose of radiating the ventilator for a long time can be realized, and the radiating efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a heat dissipation structure of a centrifugal fan. Background Art

[0002] A centrifugal fan is a device that uses mechanical energy to increase and transport gas pressure. Its operating principle is to accelerate the gas through a high-speed rotating impeller, then redirect the flow through a diffuser, converting kinetic energy into potential energy (pressure). A centrifugal fan consists of a casing, main shaft, impeller, bearing transmission mechanism, and motor. It is widely used for ventilation, dust removal, and cooling in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings; ventilation and air induction in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; grain drying and conveying; wind tunnel air supply, and the inflation and propulsion of hovercraft.

[0003] The patent application number is CN202420112748.X, a centrifugal fan heat dissipation structure, including a fan body, support rods are symmetrically arranged at the bottom of the fan body, an L-shaped support plate is fixedly connected to one side of the fan body, a motor connected to the support plate is arranged on one side of the fan body, and a water storage box is arranged at the bottom of the support plate. The interior of the water storage box is connected to a water outlet pipe through a water cooling component. When the utility model is in use, the water pump is turned on and water is sucked in through the water pump pipe, and then the cold water is discharged to the interior of the water cooling pipe through the water inlet pipe, and finally the water is discharged back to the interior of the water storage box from the water outlet pipe. The circulating cold water continuously passes through the water cooling pipe, and the water cooling pipe with lower temperature can perform heat transfer and absorption treatment on the heat in the motor through the water cooling tank, thereby having a heat dissipation effect on the interior of the motor.

[0004] The above patent still has certain shortcomings: when dissipating heat, the coolant with a higher temperature will not only fail to dissipate heat to the fan volute, but will also cause the fan volute to have a strong thermal insulation ability, resulting in a large amount of high-temperature heat energy easily accumulating in the fan, seriously affecting the operation of the mechanical components in the fan. Utility Model Content

[0005] The main technical problem to be solved by the utility model is to provide a centrifugal fan heat dissipation structure to achieve effective cooling of the fan volute and ensure the normal operation of the mechanical components in the fan.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A centrifugal fan heat dissipation structure includes a volute assembly and a heat dissipation assembly fixedly connected to the volute assembly, the heat dissipation assembly includes a box body, the upper and lower bottom surfaces of the box body are provided with placement grooves, a water pump and a return pump are arranged in the placement groove on the upper bottom surface of the box body, the water outlet end of the water pump is connected to a first water pipe, the water inlet end of the water pump is also connected to a third water pipe, and the water inlet end of the return pump is connected to a second water pipe, the first water pipe and the second water pipe both extend to the interior of the volute assembly, and the third water pipe extends to the interior of the box body; a refrigeration assembly is arranged inside the box body, a pair of heat dissipation elements are arranged in the placement groove on the lower bottom surface of the box body, the output end of the reflux pump is connected to the heat dissipation element through a first circulation pipeline, and the heat dissipation element is also connected to the interior of the box body through a second circulation pipeline.

[0008] The following is a further optimization of the above technical solution by the present invention:

[0009] The volute assembly includes a volute, an inner shell is arranged inside the volute, a cavity is arranged between the inner shell and the volute, and a first connecting plate is welded to the top of the volute.

[0010] Further optimization: one end of the first water pipe and the second water pipe both extend into the cavity and are connected to the cavity.

[0011] Further optimization: the refrigeration component includes a semiconductor refrigerator, and a plurality of fins are installed on the semiconductor refrigerator.

[0012] Further optimization: the heat sink includes a mounting shell, the two mounting shells are connected by a pipeline, a mounting groove is opened in the mounting shell, an impeller is rotatably connected to the mounting groove through a bearing, and the impeller is fixedly connected to multiple fan blades through a flat key.

[0013] Further optimization: the box body is also provided with a plurality of second connecting plates integrally formed with the box body, the second connecting plates are provided with through holes, bolts matching therewith are provided in the through holes, and threaded holes matching the bolts are provided on the volute assembly.

[0014] The utility model adopts the above technical solution, which is ingenious in conception and reasonable in structure. Through the joint action of the reflux pump and the water pump, the coolant is circulated in the volute assembly to effectively reduce the overall temperature of the volute assembly. At the same time, when dissipating heat, the semiconductor refrigerator will start and cool the refrigerant inside the box through the fins, ensuring that the refrigerant is always in a low-temperature state during the heat dissipation process of the fan, and can achieve the purpose of long-term heat dissipation of the fan.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the volute assembly in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the heat dissipation component structure in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the heat dissipation component in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the heat dissipation component in an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the heat dissipation structure in an embodiment of the present utility model.

[0022] In the figure: 1-volute assembly; 2-heat dissipation assembly; 11-volute; 12-inner shell; 13-cavity; 14-first connecting plate; 21-housing; 22-mounting groove; 221-water pump; 222-reflux pump; 223-first water pipe; 224-second water pipe; 225-third water pipe; 226-first circulation pipeline; 227-second circulation pipeline; 23-second connecting plate; 231-through hole; 232-bolt; 24-heat dissipation element; 241-mounting shell; 242-mounting groove; 243-impeller; 244-fan blade; 25-semiconductor refrigerator; 251-fin. DETAILED DESCRIPTION

[0023] like Figure 1-6 As shown: A centrifugal fan heat dissipation structure includes a volute assembly 1 and a heat dissipation assembly 2 fixedly connected to the volute assembly 1, the heat dissipation assembly 2 includes a box body 21, the upper and lower bottom surfaces of the box body 21 are provided with a placement groove 22, the placement groove 22 on the bottom surface of the box body 21 is provided with a water pump 221 and a return pump 222, the water outlet end of the water pump 221 is connected to a first water pipe 223, the water inlet end of the water pump 221 is also connected to a third water pipe 225, and the return pump 222 is provided with a water outlet end of the water pump 221. A second water pipe 224 is connected to the water inlet end, the first water pipe 223 and the second water pipe 224 both extend to the interior of the volute assembly 1, and the third water pipe 225 extends to the interior of the box body 21; a refrigeration assembly is provided inside the box body 21, and a pair of heat sinks 24 are provided in the placement groove 22 on the lower bottom surface of the box body 21. The output end of the reflux pump 222 is connected to the heat sink 24 through the first circulation pipeline 226, and the heat sink 24 is also connected to the interior of the box body 21 through the second circulation pipeline 227.

[0024] The volute assembly 1 includes a volute 11 , an inner shell 12 is provided inside the volute 11 , a cavity 13 is provided between the inner shell 12 and the volute 11 , and a first connecting plate 14 is welded to the top of the volute 11 .

[0025] In this embodiment, the first connecting plate 14 is used to fix the fan on a work surface or a workbench.

[0026] One end of each of the first water pipe 223 and the second water pipe 224 extends into the cavity 13 and communicates with the cavity 13 .

[0027] The refrigeration component includes a semiconductor refrigerator 25 , on which a plurality of fins 251 are mounted.

[0028] In this embodiment, the semiconductor cooler 25 and the fins 251 are used to cool the refrigerant in the heat dissipation assembly 2 .

[0029] The heat sink 24 includes a mounting shell 241 , the two mounting shells 241 are connected by a pipeline, a mounting slot 242 is opened in the mounting shell 241 , an impeller 243 is rotatably connected to the mounting slot 242 via a bearing, and the impeller 243 is fixedly connected to a plurality of fan blades 244 via a flat key.

[0030] In this embodiment, the heat sink 24 is used to dissipate heat from the semiconductor cooler 25 .

[0031] The housing 21 is further provided with a plurality of second connecting plates 23 integrally formed with the housing 21 . The second connecting plates 23 are provided with through holes 231 , and matching bolts 232 are provided in the through holes 231 . The volute assembly 1 is provided with threaded holes matching the bolts 232 .

[0032] In this embodiment, the second connecting plate 23 and the bolt 232 can be used in conjunction to fix the heat dissipation assembly 2 on the volute assembly 1.

[0033] During use, the housing 21 of the heat dissipation component 2 is filled with coolant. When the volute component 1 needs to be cooled, the water pump 221 is started, and the coolant is compressed into the water pump 221 through the third water pipe 225 and enters the cavity 13 through the first water pipe 223 for heat exchange and cooling. The temperature of the coolant rises, and the reflux pump 222 is turned on at this time. The coolant after heat exchange is compressed into the reflux pump 222 through the second water pipe 224 and enters the heat dissipation component 24 through the first circulation pipeline 226, and then the coolant returns to the housing 21 through the second circulation pipeline 227; during this process, the semiconductor refrigerator 25 works, and the refrigerant is cooled by the fins 251, and the coolant passing through the heat dissipation component 24 will impact the fan blades 244, driving the impeller 243 to rotate, thereby accelerating the cooling and heat dissipation of the semiconductor refrigerator 25.

[0034] For ordinary technicians in this field, based on the teachings of this utility model, without departing from the principles and spirit of this utility model, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of this utility model.

Claims

1. A centrifugal fan heat dissipation structure, characterized by: The invention comprises a volute assembly (1) and a heat dissipation assembly (2) fixedly connected to the volute assembly (1), wherein the heat dissipation assembly (2) comprises a box body (21), and the upper and lower bottom surfaces of the box body (21) are both provided with a placement groove (22), and a water pump (221) and a return pump (222) are provided in the placement groove (22) on the upper bottom surface of the box body (21), and the water outlet end of the water pump (221) is connected to a first water pipe (223), and the water inlet end of the water pump (221) is further connected to a third water pipe (225), and the water inlet end of the return pump (222) is connected to a third water pipe (226). Two water pipes (224), the first water pipe (223) and the second water pipe (224) both extend into the interior of the volute assembly (1), and the third water pipe (225) extends into the interior of the box (21); a refrigeration assembly is provided inside the box (21), and a pair of heat sinks (24) are provided in the placement groove (22) on the bottom surface of the box (21); the output end of the reflux pump (222) is connected to the heat sink (24) through the first circulation pipeline (226), and the heat sink (24) is also connected to the interior of the box (21) through the second circulation pipeline (227).

2. The centrifugal fan heat dissipation structure according to claim 1, characterized in that: The volute assembly (1) comprises a volute (11), an inner shell (12) is provided inside the volute (11), a cavity (13) is provided between the inner shell (12) and the volute (11), and a first connecting plate (14) is welded to the top of the volute (11).

3. The centrifugal fan heat dissipation structure according to claim 2, characterized in that: One end of the first water pipe (223) and the second water pipe (224) both extend into the cavity (13) and are in communication with the cavity (13).

4. The centrifugal fan heat dissipation structure according to claim 3, characterized in that: The refrigeration component comprises a semiconductor refrigerator (25), and a plurality of fins (251) are mounted on the semiconductor refrigerator (25).

5. The centrifugal fan heat dissipation structure according to claim 4, characterized in that: The heat sink (24) comprises a mounting shell (241), the two mounting shells (241) are connected via a pipeline, a mounting groove (242) is provided in the mounting shell (241), an impeller (243) is rotatably connected in the mounting groove (242), and the impeller (243) is fixedly connected to a plurality of fan blades (244) via a flat key.

6. The centrifugal fan heat dissipation structure according to claim 5, characterized in that: The housing (21) is further provided with a plurality of second connecting plates (23) integrally formed with the housing (21), the second connecting plates (23) being provided with through holes (231), bolts (232) matching the through holes (231) being provided in the through holes (231), and threaded holes matching the bolts (232) being provided on the volute assembly (1).

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