Motor cooling mechanism for air suspension centrifugal fan

Abstract

The invention provides a motor cooling mechanism for an air suspension centrifugal fan, the motor cooling mechanism is used for cooling and heat dissipation of a motor in a case, one side in the case is a cooling cabinet for accommodating the motor cooling mechanism, the motor cooling mechanism comprises an air blower, a plurality of exhaust ports, an air inlet assembly and a refrigeration assembly, the air inlet assembly comprises an air inlet header pipe, an air outlet header pipe and a plurality of heat exchange pipes, the heads and the tails of the heat exchange pipes are connected with the air inlet header pipe and the air outlet header pipe respectively, the air blower is connected with the air inlet header pipe, and the air outlets are connected with the air outlet header pipe. When the bent position of the bottom of the heat exchange pipe is full of water, gas cannot pass through the bent position of the bottom of the heat exchange pipe, the gas enters the air bag and fills the air bag, then the air bag extrudes the sliding block to transversely move to the limit stroke position, the sliding block is in linkage with the rotating body to rotate through the connecting rod, the rack and the gear, and the inverted-T-shaped channel is communicated with the drainage hole. And accumulated water in the heat exchange tube is discharged along the inverted T-shaped channel and the drainage hole.

Description

Technical Field

[0001] The invention relates to the technical field of motor cooling devices, and in particular to a motor cooling mechanism for an air-suspended centrifugal fan. Background Art

[0002] Air suspension centrifugal fan is a new concept fan, with high efficiency, high performance, low noise and low energy consumption, so it is widely used. It will emit a lot of heat during operation. If the heat cannot be discharged in time, it may cause damage to the machine, so corresponding cooling and heat dissipation measures must be adopted to discharge the heat.

[0003] The conventional heat dissipation method is to use exhaust fans and other equipment and simple heat dissipation structures for heat dissipation, but this heat dissipation method is not enough to cope with long-term high-intensity work. In order to increase the heat dissipation effect, the inlet air temperature needs to be cooled and lowered, and the currently commonly used refrigeration method is mostly the compressor refrigeration method. However, when the outside air temperature is high, the high-temperature hot air will condense when entering the heat exchange tube, causing water accumulation in the heat exchange tube. When the water accumulates more and more, it will block the bending nodes of the heat exchange tube, causing poor ventilation and reduced heat dissipation effect. At the same time, if the accumulated water in the heat exchange tube is not discharged in time, the intake pressure will be too high and the accumulated water will be squeezed out of the exhaust end, thereby causing damage to the electrode.

[0004] Therefore, it is necessary to develop a device that can automatically discharge the water accumulated in the heat exchange tube, and this case is born. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a motor cooling mechanism for an air-suspended centrifugal fan, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a motor cooling mechanism for an air-suspended centrifugal fan, the motor cooling mechanism is used to cool and dissipate heat for the motor in the chassis, one side of the chassis is a cooling cabinet for accommodating the motor cooling mechanism, the motor cooling mechanism includes a blower, a plurality of exhaust ports, an air inlet assembly, and a refrigeration assembly, the air inlet assembly includes an air inlet main pipe, an air outlet main pipe and a plurality of heat exchange pipes, the heads and tails of the plurality of heat exchange pipes are respectively connected to the air inlet main pipe and the air outlet main pipe, the blower is connected to the air inlet main pipe, the plurality of exhaust ports are connected to the air outlet main pipe, and correspond to the motor, the refrigeration assembly includes a heat exchange chamber and a refrigeration compressor, the heat exchange chamber and the refrigeration compressor are cyclically connected by connecting pipes, a plurality of heat exchange pipes are placed in the heat exchange chamber, the heat exchange pipes are arranged in a vertical serpentine shape, a drainage assembly is provided at the bend at the bottom of each heat exchange pipe, and a trigger assembly and a driving component are also included, when the bend at the heat exchange pipe is full of water, the trigger assembly will trigger the driving component to drive the drainage assembly to drain water.

[0009] Preferably, the drainage component includes a circular outer cylinder and a rotating body, the outer cylinder is fixed at the bottom bend of the heat exchange tube, the rotating body is piston-rotatably arranged in the outer cylinder, drainage holes are opened on both sides of the outer cylinder, an inverted T-shaped channel is arranged in the rotating body, the top inlet of the inverted T-shaped channel is connected to the heat exchange tube, and the outlets on both sides of the inverted T-shaped channel can be connected to the drainage hole; when the bend of the heat exchange tube is filled with water, the trigger component will trigger the driving component to drive the inverted T-shaped channel to rotate to the position where the outlets on both sides are connected to the drainage hole.

[0010] Preferably, the driving component includes a gear, a rack and a guide rail, the gear is coaxially connected to the bottom of the rotating body, the guide rail is transversely arranged in the cooling cabinet, the rack is transversely slidably adapted on the guide rail and meshes with the gear, and the rack is linked to the trigger assembly through a connecting rod.

[0011] Preferably, the trigger assembly includes a transverse cavity, a slider, and an airbag. The transverse cavity is transversely arranged on the heat exchange tube, the slider is slidably adapted in the transverse cavity, the airbag is accommodated in the transverse cavity, one end of the airbag is fixed to the heat exchange tube and passes through the interior of the heat exchange tube, and the other end is connected to the slider. The other end of the slider is connected to the end of the transverse cavity through a spring, and the rack is connected to the slider through a connecting rod.

[0012] Preferably, the trigger assembly also includes an electromagnet, a magnetic block, a relay and a trigger switch, the magnetic block is arranged on the side of the slider close to the spring, and the electromagnet is arranged at the end of the transverse cavity and corresponds to the magnetic block; when the electromagnet is energized, the magnetic poles of the electromagnet and the magnetic block corresponding to one side are opposite; the trigger switch is arranged in the middle section of the transverse cavity and corresponds to the slider, and the electromagnet, relay and trigger switch are connected in series on the same circuit.

[0013] Preferably, all gears corresponding to the bottom of each heat exchange tube are meshed on the same rack.

[0014] Preferably, sealing rings are provided on both upper and lower sides of the inverted T-shaped channel between the rotating body and the outer cylinder.

[0015] (III) Beneficial effects

[0016] The present invention provides a motor cooling mechanism for an air-suspended centrifugal fan, which has the following beneficial effects:

[0017] 1. The motor cooling mechanism for the air suspension centrifugal fan, when the bottom bend of the heat exchange tube is full of water, the gas cannot pass through the bend at the bottom of the heat exchange tube, so that the gas enters the airbag and fills it, and then the airbag squeezes the slider to move horizontally to the limit stroke position, and the slider rotates through the connecting rod, rack, and gear linkage rotating body to make the inverted T-shaped channel and the drainage hole pass through, and the accumulated water in the heat exchange tube is discharged along the inverted T-shaped channel and the drainage hole, effectively preventing the excessive accumulation of water in the heat exchange tube from being sprayed onto the motor, avoiding damage to the electrode.

[0018] 2. The motor cooling mechanism for the air suspension centrifugal fan can avoid the defect that the rotating body resets and closes the drainage hole when the water is halfway discharged by arranging the electromagnet and the relay, so that the connection between the inverted T-shaped channel and the drainage hole can continue for a period of time, so that the water in the heat exchange tube can be completely drained. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an external axonometric view of the present invention;

[0020] Figure 2 It is a schematic diagram of a refrigeration assembly of the present invention;

[0021] Figure 3 is a schematic diagram of an air inlet assembly of the present invention;

[0022] Figure 4 This is a schematic diagram of the bottom of the heat exchange chamber of the present invention;

[0023] Figure 5 It is a cross-sectional view of the drainage assembly and the trigger assembly of the present invention;

[0024] Figure 6 This is a trigger state diagram of the trigger component of the present invention.

[0025] In the figure: 1 chassis, 11 motor, 12 electrical cabinet, 13 cooling cabinet, 14 blower, 15 exhaust port, 16 heat dissipation window, 2 air inlet assembly, 21 heat exchange pipe, 22 air inlet main pipe, 23 air outlet main pipe, 3 refrigeration assembly, 31 heat exchange cavity, 32 refrigeration compressor, 33 connecting pipe, 4 drainage assembly, 41 outer cylinder, 42 rotating body, 43 drainage hole, 44 inverted T-shaped channel, 45 gear, 46 rack, 47 guide rail, 48 connecting rod, 5 trigger assembly, 51 transverse cavity, 52 slider, 53 airbag, 54 spring, 55 electromagnet, 56 magnetic block, 57 relay, 58 trigger switch. DETAILED DESCRIPTION

[0026] The embodiment of the present invention provides a motor cooling mechanism for an air suspension centrifugal fan, such as Figure 1-6 As shown, the motor cooling mechanism is used to cool and dissipate heat for the motor 11 in the chassis 1. One side of the chassis 1 is a cooling cabinet 13 for accommodating the motor cooling mechanism, and the other side of the chassis 1 is an electrical cabinet 12. The chassis 1 is provided with a heat dissipation window 16 on the side of the electrical cabinet 12. The electronic components in the electrical cabinet 12 are not the focus of this case.

[0027] The motor cooling mechanism includes a blower 14 , a plurality of exhaust ports 15 , an air inlet assembly 2 , and a refrigeration assembly 3 .

[0028] The air inlet assembly 2 includes an air inlet main pipe 22, an air outlet main pipe 23 and a plurality of heat exchange pipes 21. The head and tail of the plurality of heat exchange pipes 21 are respectively connected to the air inlet main pipe 22 and the air outlet main pipe 23. The air inlet main pipe 22 and the air outlet main pipe 23 are arranged longitudinally. The blower 14 is connected to the air inlet main pipe 22. The blower 14 is used to provide power for the air inlet. A plurality of exhaust ports 15 are arranged longitudinally. The plurality of exhaust ports 15 are connected to the air outlet main pipe 23 and correspond to the motor 11.

[0029] The refrigeration assembly 3 includes a heat exchange chamber 31 and a refrigeration compressor 32. The heat exchange chamber 31 and the refrigeration compressor 32 are connected in a head-to-tail loop through a connecting pipe 33. The refrigeration compressor 32 is an existing mature technology and can be an air-cooled industrial chiller or an air-energy heat pump air-conditioning compressor. Taking the air-energy heat pump air-conditioning compressor as an example, the refrigerant is R134a. The low-temperature refrigerant absorbs the heat in the heat exchange tube 21 through the heat exchange chamber 31 and evaporates into a low-temperature and low-pressure gas. Then the low-temperature and low-pressure gas is sucked into the compressor and becomes a high-temperature and high-pressure gas after being compressed. Then the high-temperature and high-pressure gas enters the condenser, releases heat and condenses into liquid through heat exchange with water. The condensed liquid is decompressed through the expansion valve and becomes a low-temperature and low-pressure liquid, which enters the heat exchange chamber 31 again for a cycle.

[0030] A plurality of heat exchange tubes 21 are placed in the heat exchange cavity 31 . The heat exchange tubes 21 are arranged in a vertical serpentine shape. The serpentine-shaped heat exchange tubes 21 can improve the heat exchange efficiency of the internal and external air and rapidly cool the air passing through the heat exchange tubes 21 .

[0031] Since hot air is easily condensed when it encounters cold, a drainage component 4 is provided at the bend at the bottom of each heat exchange tube 21 .

[0032] like Figure 5 As shown, the drainage assembly 4 includes a circular outer cylinder 41 and a rotating body 42. The outer cylinder 41 is fixed at the bottom bend of the heat exchange tube 21. The rotating body 42 is piston-rotatably arranged in the outer cylinder 41. The top and bottom of the rotating body 42 are pivotally connected through bearings. Drain holes 43 are opened on both sides of the outer cylinder 41. An inverted T-shaped channel 44 is arranged in the rotating body 42. The top inlet of the inverted T-shaped channel 44 is connected to the heat exchange tube 21, and the top inlet is at the center of its bearing. The outlets on both sides of the inverted T-shaped channel 44 can be connected with the drainage hole 43. When connected, the water in the heat exchange tube 21 is discharged from the drainage hole 43 through the inverted T-shaped channel 44.

[0033] In order to prevent gas from leaking out from between the rotating body 42 and the outer tube 41 , sealing rings are provided on both upper and lower sides of the inverted T-shaped channel 44 between the rotating body 42 and the outer tube 41 , thereby improving the sealing performance between the rotating body 42 and the outer tube 41 .

[0034] The device also includes a trigger assembly 5 and a driving component. When the bend of the heat exchange tube 21 is filled with water, the trigger assembly 5 triggers the driving component to drive the inverted T-shaped channel 44 to rotate to a position where the outlets on both sides thereof are connected to the drainage hole 43.

[0035] like Figure 4 As shown, the driving component includes a gear 45, a rack 46 and a guide rail 47. The gear 45 is coaxially connected to the bottom of the rotating body 42. The guide rail 47 is transversely arranged in the cooling cabinet 13. The rack 46 is transversely slidably adapted on the guide rail 47 and meshes with the gear 45. The rack 46 is linked to the trigger assembly through a connecting rod 48. The gear 45 and the rotating body 42 are driven to rotate by the transverse movement of the rack 46, so that the inverted T-shaped channel 44 on the rotating body 42 is connected with the drainage hole 43.

[0036] like Figure 5-6 As shown, the trigger assembly 5 includes a transverse cavity 51, a slider 52, and an airbag 53. The transverse cavity 51 is transversely arranged on the heat exchange tube 21, the slider 52 is slidably adapted in the transverse cavity 51, and the airbag 53 is accommodated in the transverse cavity 51. One end of the airbag 53 is fixed to the heat exchange tube 21 and is connected to the inside of the heat exchange tube 21. The other end is connected to the slider 52. The gas in the heat exchange tube 21 can enter the airbag 53. The end of the airbag 53 connected to the slider 52 is closed. The other end of the slider 52 is connected to the end of the transverse cavity 51 through a spring 54, and the rack 46 is connected to the slider 52 through a connecting rod 48.

[0037] When the heat exchange tube 21 is in a through state, such as Figure 5As shown, the gas in the heat exchange tube 21 moves along the length direction of the heat exchange tube 21. Under the action of the spring 54, the slider 52 squeezes the airbag 53 and sticks it near the heat exchange tube 21. At this time, the inverted T-shaped channel 44 and the drainage hole 43 are not connected. When the bottom bend of the heat exchange tube 21 is full of water, as shown in FIG. Figure 6 As shown, the gas cannot pass through the bend at the bottom of the heat exchange tube 21, so that the gas enters the airbag 53 and fills it, and then the airbag 53 squeezes the slider 52 to move horizontally to the limit stroke position, and the slider 52 drives the rack 46 to move horizontally through the connecting rod 48, and then drives the gear 45 and the rotating body 42 to rotate, so that the inverted T-shaped channel 44 and the drainage hole 43 are connected, and the accumulated water in the heat exchange tube 21 is discharged along the inverted T-shaped channel 44 and the drainage hole 43.

[0038] A drainage ditch may be provided in the cooling cabinet 13 below the drainage hole 43 , with one end of the drainage ditch extending to the outside of the chassis 1 .

[0039] In order to make the drainage components 4 on each heat exchange tube 21 drain synchronously, all gears 45 corresponding to the bottom of each heat exchange tube 21 are meshed on the same rack 46. When the rack 46 moves laterally, it can link the multiple gears 45 and the rotating body 42 to rotate synchronously, thereby achieving drainage.

[0040] In order to completely drain the water at the bend of the heat exchange tube 21, the trigger assembly 5 also includes an electromagnet 55, a magnetic block 56, a relay 57 and a trigger switch 58. The relay 57 is a time relay. The trigger switch 58 is a TS-1111A touch switch. The magnetic block 56 is arranged on the side of the slider 52 close to the spring 54, and the electromagnet 55 is arranged at the end of the transverse cavity 51 and corresponds to the magnetic block 56; when the electromagnet 55 is energized, the magnetic poles of the electromagnet 55 and the magnetic block 56 are opposite; the trigger switch 58 is arranged in the middle of the transverse cavity 51 and corresponds to the slider 52. The electromagnet 55, the relay 57 and the trigger switch 58 are connected in series in the same circuit.

[0041] When the airbag 53 is filled, the slider 52 touches the trigger switch 58 during the lateral movement, triggering the electromagnet 55 to be energized, and the electromagnet 55 adsorbs the slider 52. At this time, the slider 52 reaches the limit of travel. The slider 52 is linked to the rotating body 42 by the connecting rod 48, the rack 46, and the gear 45 to rotate a certain angle, so that the inverted T-shaped channel 44 is connected with the drain hole 43. The setting of the relay 57 can make the electromagnet 55 adsorb the slider 52 for a period of time. When the time is up and the electromagnet 55 is powered off, the water in the heat exchange tube 21 is also drained. The air in the heat exchange tube 21 is unobstructed again. At this time, the slider 52 squeezes the airbag 53 under the action of the spring 54. The slider 52 resets the inverted T-shaped channel 44 on the rotating body 42 to close the drainage hole 43 through the connecting rod 48, the rack 46, and the gear 45. The purpose of setting the electromagnet 55 and the relay 57 is to prevent the rotating body 42 from resetting and closing the drainage hole 43 when the water is halfway discharged, so that the connection between the inverted T-shaped channel 44 and the drainage hole 43 can continue for a period of time, so that the water in the heat exchange tube 21 can be completely drained.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor cooling mechanism for an air suspension centrifugal fan, the motor cooling mechanism being used to cool and dissipate heat from a motor (11) in a chassis (1), one side of the chassis (1) being a cooling cabinet (13) for accommodating the motor cooling mechanism, Features: The motor cooling mechanism comprises a blower (14), a plurality of exhaust ports (15), an air inlet assembly (2), and a refrigeration assembly (3); the air inlet assembly (2) comprises an air inlet main pipe (22), an air outlet main pipe (23), and a plurality of heat exchange pipes (21); the ends of the plurality of heat exchange pipes (21) are respectively connected to the air inlet main pipe (22) and the air outlet main pipe (23); the blower (14) is connected to the air inlet main pipe (22); the plurality of exhaust ports (15) are connected to the air outlet main pipe (23), and correspond to the motor (11); the refrigeration assembly ( 3) comprises a heat exchange chamber (31) and a refrigeration compressor (32), wherein the heat exchange chamber (31) and the refrigeration compressor (32) are connected in an end-to-end loop through a connecting pipe (33), a plurality of heat exchange tubes (21) are placed in the heat exchange chamber (31), the heat exchange tubes (21) are arranged in a vertical serpentine shape, a drainage component (4) is provided at the bend at the bottom of each heat exchange tube (21), and further comprises a trigger component (5) and a driving component, wherein when the bend of the heat exchange tube (21) is filled with water, the trigger component (5) triggers the driving component to drive the drainage component (4) to drain water.

2. A motor cooling mechanism for an air-suspended centrifugal fan according to claim 1, Features: The drainage assembly (4) comprises a circular outer cylinder (41) and a rotating body (42); the outer cylinder (41) is fixed at the bottom bend of the heat exchange tube (21); the rotating body (42) is piston-rotatably arranged in the outer cylinder (41); drainage holes (43) are provided on both sides of the outer cylinder (41); an inverted T-shaped channel (44) is provided in the rotating body (42); the top inlet of the inverted T-shaped channel (44) is connected to the heat exchange tube (21); and the outlets on both sides of the inverted T-shaped channel (44) can be connected to the drainage hole (43); when the bend of the heat exchange tube (21) is filled with water, the trigger assembly (5) will trigger the driving component to drive the inverted T-shaped channel (44) to rotate to a position where the outlets on both sides thereof are connected to the drainage hole (43).

3. A motor cooling mechanism for an air-suspended centrifugal fan according to claim 2, Features: The driving component comprises a gear (45), a rack (46) and a guide rail (47); the gear (45) is coaxially connected to the bottom of the rotating body (42); the guide rail (47) is transversely arranged in the cooling cabinet (13); the rack (46) is transversely slidably adapted on the guide rail (47) and meshes with the gear (45); the rack (46) is linked to the trigger assembly through a connecting rod (48).

4. A motor cooling mechanism for an air-suspended centrifugal fan according to claim 3, Features: The trigger assembly (5) comprises a transverse cavity (51), a slider (52), and an airbag (53); the transverse cavity (51) is transversely arranged on the heat exchange tube (21); the slider (52) is slidably fitted in the transverse cavity (51); the airbag (53) is accommodated in the transverse cavity (51); one end of the airbag (53) is fixed to the heat exchange tube (21) and is connected to the interior of the heat exchange tube (21); the other end of the airbag (53) is connected to the slider (52); the other end of the slider (52) is connected to the end of the transverse cavity (51) via a spring (54); and the rack (46) is connected to the slider (52) via a connecting rod (48).

5. A motor cooling mechanism for an air-suspended centrifugal fan according to claim 4, Features: The trigger assembly (5) further comprises an electromagnet (55), a magnetic block (56), a relay (57) and a trigger switch (58); the magnetic block (56) is arranged on a side of the slider (52) close to the spring (54); the electromagnet (55) is arranged at the end of the transverse cavity (51) and corresponds to the magnetic block (56); when the electromagnet (55) is energized, the magnetic poles of one side of the electromagnet (55) and the magnetic block (56) are opposite; the trigger switch (58) is arranged in the middle of the transverse cavity (51) and corresponds to the slider (52); the electromagnet (55), the relay (57) and the trigger switch (58) are connected in series on the same circuit.

6. A motor cooling mechanism for an air-suspended centrifugal fan according to claim 3, Features: All gears (45) corresponding to the bottom of each heat exchange tube (21) are meshed on the same rack (46).

7. A motor cooling mechanism for an air-suspended centrifugal fan according to claim 2, Features: Sealing rings are provided on both upper and lower sides of the inverted T-shaped channel (44) between the rotating body (42) and the outer cylinder (41).

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