CN114679012A

CN114679012A - Space negative pressure heat dissipation motor

Info

Publication number: CN114679012A
Application number: CN202210269791.2A
Authority: CN
Inventors: 应镑蔚
Original assignee: Zhejiang Qiangsu Motor Manufacturing Co ltd
Current assignee: Zhejiang Qiangsu Motor Manufacturing Co ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-06-28
Anticipated expiration: 2042-03-18
Also published as: CN114679012B

Abstract

The application relates to a space negative pressure heat dissipation motor which comprises a front end cover, a shell body, a rear end cover and a stator-rotor structure, wherein a heat dissipation fan is arranged in the rear end cover, the air inlet side of the heat dissipation fan faces the stator-rotor structure, the rear end cover is provided with an air outlet, the air outlet side of the heat dissipation fan faces the air outlet, a clamping cavity is arranged in the front end cover, a water inlet connector is arranged on the front end cover and communicated with the clamping cavity, a plurality of water outlet channels are arranged on the front end cover, and a plurality of pressurizing cavities are arranged in the shell body; the outer side wall of the shell body close to the front end cover is provided with a convex ring, a flow channel is formed in the convex ring, the flow channel penetrates through the convex ring along the direction far away from the front end cover, the flow channel is communicated with the pressurizing cavity, and the flow channel corresponds to the gaps between the adjacent radiating fins one by one. Through leading to water to the front end housing, water gets into the clearance department of fin through pressure boost chamber and runner and cools off the shell body, improves the cooling effect of shell body, makes the difficult overheated of motor, prolongs the life of motor.

Description

Space negative pressure heat dissipation motor

Technical Field

The application relates to the technical field of motor heat dissipation, in particular to a space negative pressure heat dissipation motor.

Background

The commonly used heat dissipation fans of the motor in the related art are two types, namely a centrifugal fan and an axial flow fan, wherein the centrifugal fan sucks one side of the motor to form negative pressure to help the motor to dissipate heat, but airflow sucked by the centrifugal fan is refracted by 90 degrees, airflow loss is large due to the fact that the airflow is sucked and folded, heat dissipation efficiency of the motor is seriously affected, the heat dissipation efficiency is low, the motor is easy to damage due to overheating, and the service life of the motor is shortened.

Disclosure of Invention

In order to prolong the service life of the motor, the application provides a space negative pressure heat dissipation motor.

The application provides a space negative pressure heat dissipation motor adopts following technical scheme:

a space negative pressure heat dissipation motor comprises a front end cover, a shell body, a rear end cover and a stator-rotor structure located in the shell body, wherein a heat dissipation fan is arranged in the rear end cover, the air inlet side of the heat dissipation fan faces the stator-rotor structure, the rear end cover is provided with an air outlet, the air outlet side of the heat dissipation fan faces the air outlet, a clamping cavity is formed in the front end cover, a water inlet connector used for being connected with a water pipe is arranged on the front end cover and is communicated with the clamping cavity, a plurality of water outlet channels are arranged on the side wall, facing the shell body, of the front end cover, a plurality of pressurization cavities are arranged in the circumferential direction of the axis of the shell body, and the pressurization cavities and the water outlet channels are arranged in a one-to-one correspondence communication mode;

The improved booster shell is characterized in that a convex ring is arranged on the outer side wall, close to the front end cover, of the shell body, a flow channel is formed in the convex ring, the flow channel penetrates through the convex ring along the direction away from the front end cover, the flow channel is communicated with the boosting cavity, a plurality of radiating fins are arranged on the shell body at intervals, and gaps among the adjacent radiating fins are in one-to-one correspondence with the flow channel.

By adopting the technical scheme, the heat dissipation fan exhausts air from the stator and rotor structure, so that space negative pressure is formed, and the stator and rotor are cooled;

when the motor uses, can only sell the joint connection pipe, water piping connection water tap, the water injection makes the temperature of front end housing keep lower in the double-layered intracavity of tap case clamp, and when the water that presss from both sides the intracavity is full of the back, the water that presss from both sides the intracavity lets in the pressure boost intracavity from water storage channel to through the runner on the bulge loop, flow in the clearance department between the adjacent fin, hydroenergy dispels the heat to the shell body outer wall, improves the radiating effect of motor, makes the motor not fragile, has prolonged the life of motor.

Optionally, a drainage ring is arranged on the outer side wall of the shell body, which is far away from the front end cover, the drainage ring extends along the circumferential direction of the shell body, a drainage channel is arranged inside the drainage ring, and the drainage channel is arranged along the circumferential direction of the axis of the drainage ring; the side wall of the drainage ring facing the convex ring is provided with a water inlet, the water inlets correspond to gaps among the radiating fins one by one, and the side wall of the drainage ring is provided with a water outlet joint which is positioned at one end of the drainage ring away from the water inlet.

Through adopting above-mentioned technical scheme, set up the drainage ring in the one side of keeping away from the front end housing for water that flows out from the runner flows between the adjacent fin, and the interval to the drainage ring is longer, makes the area that water flows through great, improves the radiating effect of shell body. And water flowing out of the flow channel enters the drainage ring through the water inlet, is connected with the water pipe through the water storage joint and then is discharged to a corresponding place. The water outlet connector is positioned at one end, far away from the water inlet, of the drainage ring, when the motor is used, the axis of the drainage ring is in the horizontal direction, the water inlet is positioned at the top end of the drainage ring, and the water outlet connector is positioned at the bottom of the drainage ring, so that water in the drainage ring can flow out through the water outlet connector conveniently.

Optionally, the shell body is provided with a plurality of through ports, and the through ports are communicated with the pressurizing cavity; a silica gel sleeve is fixed on the shell body, a water filling cavity is arranged in the silica gel sleeve, the water filling cavity is communicated with the through hole, the silica gel sleeve is hermetically connected with the outer wall of the shell body, and the silica gel sleeve is positioned between the adjacent radiating fins; after the silica gel sleeve is filled with water, the outer wall of the silica gel sleeve after being filled with water is abutted against the flow passage.

By adopting the technical scheme, when the water inlet connector leads water into the front end cover, the front end cover and the pressurizing cavity are both in a state of high water pressure, the silica gel sleeve is bulged after the water enters the water filling cavity at the moment, the silica gel sleeve can be abutted against the flow channel, the water yield of the flow channel is controlled, the excessive water yield of the flow channel is prevented, the water waste is caused, and the water-saving effect is achieved; rushing on the silica gel sleeve through high water pressure, so that water can easily flow to the two sides of the silica gel sleeve close to the radiating fins, the area of the water rushing on the radiating fins is increased, the radiating area of the shell body is increased, and the radiating effect is improved.

Optionally, a water control plate is arranged between two adjacent radiating fins, the water control plate is located on one side, away from the flow channel, of the silica gel sleeve, a connecting strip is fixed on one side, away from the outer wall of the shell body, of each radiating fin, the water control plate is fixed on the connecting strip, after the silica gel sleeve is filled with water, one side of the silica gel sleeve abuts against the flow channel, and the other side of the silica gel sleeve abuts against the water control plate.

Through adopting above-mentioned technical scheme, through setting up the accuse water board for when water pressure is great, the easy flow passage mouth that keeps away from that dashes of silica gel cover, make silica gel cover can be better six mouths of butt, thereby reach the effect of control discharge, also make rivers rush to the convenient direction that is close to the fin behind the silica gel cover simultaneously and flow.

Optionally, the portable water purifier further comprises a silica gel strip, a plurality of connectors are arranged on the silica gel strip at intervals, the water filling cavities are communicated with the connectors in a one-to-one correspondence manner, the silica gel sleeve and the silica gel strip are integrally formed, and the silica gel strip is fixed on the outer wall of the shell body.

By adopting the technical scheme, the silica gel strips and the silica gel sleeves are integrally formed, so that when the silica gel sleeves are installed on the shell body, the silica gel strips and the shell body are fixed, and the silica gel sleeves do not need to be installed at the positions of the openings one by one, so that the silica gel sleeves are convenient to install; meanwhile, because the silica gel strip has certain hardness and toughness, the silica gel strip can be well abutted against the outer wall of the shell body, a good sealing effect is achieved, and water leakage is not prone to occurring.

Optionally, a clamping piece is arranged on the silica gel strip, a notch through which the silica gel sleeve passes is formed in the clamping piece, fixing holes are formed in the clamping piece and the silica gel strip, the shell body, the clamping piece and the silica gel strip are fixed through penetrating bolts or screws in the fixing holes, and the silica gel strip is located between the outer wall of the shell body and the clamping piece.

By adopting the technical scheme, through the arrangement of the clamping piece, when the silica gel strip is installed on the outer wall of the shell body, the silica gel strip is clamped on the shell body by the clamping piece, so that the silica gel strip can be better attached to the outer wall of the shell body everywhere, the sealing effect is improved, and the joint of the silica gel strip and the shell body is not easy to leak.

Optionally, a water outlet pipe is connected in the water outlet channel, the water outlet pipe is inserted into the pressurizing cavity, and the end portion of the water outlet pipe is close to the through opening.

Through adopting above-mentioned technical scheme, the outlet pipe tip is close to the opening for in water conveniently gets into the silica gel cover, when making difficult appearance interior water of passageway, the condition that the silica gel cover does not bulge.

Optionally, a sealing ring is sleeved on the water outlet pipe, and a joint of the pressurizing cavity and the water outlet pipe is arranged in a sealing manner.

By adopting the technical scheme, the joint of the pressurizing cavity and the water outlet pipe is not easy to leak through the sealing ring.

Optionally, one side of the silica gel sleeve facing the flow channel is provided with two guiding inclined planes, the two guiding inclined planes are located at two ends of the silica gel sleeve along the direction close to the radiating fin, and the guiding inclined planes are inclined along the direction away from the convex ring.

Through above-mentioned technical scheme, the direction inclined plane makes the water towards the direction circulation of fin easily on the silica gel cover, is that water is difficult to sputter towards the direction of keeping away from the shell body.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the front end cover is filled with water, and the water enters the gap of the radiating fins through the pressurizing cavity and the flow channel to cool the shell body, so that the cooling effect of the shell body is improved, the motor is not easy to overheat, and the service life of the motor is prolonged;

2. the silica gel sleeve is arranged, so that water flow can be controlled by the silica gel sleeve, the water flow is large in placement, water is saved, the flowing direction of the water flow is changed by the silica gel sleeve, more water flow can contact with the radiating fins, the radiating effect of the radiating fins is good, and the motor is not easy to overheat;

3. the water control plate enables the silica gel sleeve to be well abutted to the flow channel, and the silica gel sleeve keeps a good water control effect.

Drawings

Fig. 1 is an overall schematic view of a heat dissipation motor according to an embodiment of the present application.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is an enlarged view of fig. 2 at a, mainly showing a structure at a flow passage.

Fig. 4 is a schematic structural view of the silicone rubber strip, the clamping piece and the silicone rubber sleeve of the embodiment.

Description of the reference numerals: 1. a housing; 11. a front end cap; 111. a clamp cavity; 112. a water inlet joint; 113. a water outlet channel; 114. a water outlet pipe; 12. a shell body; 121. a pressurizing cavity; 122. a port; 123. a heat sink; 13. a rear end cap; 131. an air outlet; 2. a stator-rotor structure; 3. a base; 4. a heat radiation fan; 5. a seal ring; 6. a convex ring; 61. a flow channel; 7. a connecting strip; 71. a water control plate; 8. a silica gel strip; 81. a connecting port; 82. a silica gel sleeve; 822. a guide slope; 821. a water-filled cavity; 83. a clamping piece; 831. a notch; 9. a drainage ring; 91. a drainage channel; 92. a water inlet; 93. and a water outlet joint.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a space negative pressure heat dissipation motor. Referring to fig. 1 and 2, the space negative pressure heat dissipation motor includes a housing 1, a stator-rotor structure 2 located in the housing 1, and a base 3 located on an outer wall of the housing 1, where the housing 1 includes a front end cover 11, a housing 12, and a rear end cover 13. The front end cover 11 and the rear end cover 13 are fixed at two axial ends of the shell body 12 through bolts, and the stator-rotor structure 2 is installed in the shell body 12.

Referring to fig. 1 and 2, the space negative pressure heat dissipation motor further includes a heat dissipation fan 4, the heat dissipation fan 4 is rotatably connected in the rear end cover 13, an air outlet 131 is formed in one side of the rear end cover 13, which is far away from the housing 12, an air inlet side of the heat dissipation fan 4 faces the stator-rotor structure 2, and an air outlet side of the heat dissipation fan 4 faces the air outlet 131. After the cooling fan 4 rotates, the inner cavity of the shell body 12 is pumped to form negative pressure, so that hot air in the shell body 12 is discharged out of the shell body 12, and the purpose of cooling is achieved.

Referring to fig. 1 and 2, when the housing 1 is supported on the floor by the base 3, the axis of the housing 1 is horizontal. The front end cover 11 is internally provided with a clamping cavity 111, the bottom of the front end cover 11 is connected with a water inlet connector 112, and the water inlet connector 112 is communicated with the clamping cavity 111. Five water outlet channels 113 are formed in the side wall, facing the shell body 12, of the top of the front end cover 11, five pressurizing cavities 121 are formed in the end face, facing the front end cover 11, of the shell body 12, the pressurizing cavities 121 and the water outlet channels 113 are arranged in a one-to-one correspondence mode, and when the front end cover 11 is installed on the shell body 12, the pressurizing cavities 121 are communicated with the water outlet channels 113.

Referring to fig. 3, a water outlet pipe 114 is fixed in the water outlet channel 113, and the water outlet pipe 114 is inserted into the pressurizing cavity 121. The water outlet pipe 114 is sleeved with a sealing ring 5, the sealing ring 5 is clamped between the front end cover 11 and the shell body 12, and the sealing ring 5 connects the connection part of the pressurization cavity 121 and the water outlet pipe 114 in a sealing manner.

Referring to fig. 1 and 3, a protruding ring 6 is fixed on the side wall of the end portion of the shell 12 close to the front section cover, and the protruding ring 6 extends along the circumferential direction of the axis of the shell 12. Five runners 61 are arranged on the convex ring 6, one ends of the runners 61 are communicated with the pressurizing cavities 121 in a one-to-one correspondence mode, and the other ends of the runners 61 extend to one side, far away from the front section cover, of the convex ring 6.

Referring to fig. 1, a plurality of fins 123 are fixed to the outer circumferential wall of the housing 12 at intervals, and the longitudinal direction of the fins 123 is parallel to the longitudinal direction of the axis of the housing 12.

Referring to fig. 1 and 3, the end of the flow channel 61 facing away from the front end cover 11 corresponds to the gap between the adjacent fins 123.

Referring to fig. 3 and 4, a silicone strip 8 is fixed on the outer wall of the housing body 12, five connection ports 81 are provided on the silicone strip 8 at intervals, and the connection ports 81 are arranged along the length direction of the silicone strip 8. The silica gel strip 8 is integrally formed with a silica gel sleeve 82, the silica gel sleeve 82 is provided with a water filling cavity 821, the silica gel sleeve 82 and the connector 81 are arranged in a one-to-one correspondence manner, and the water filling cavity 821 and the connector 81 are communicated in a one-to-one correspondence manner.

Referring to fig. 3 and 4, when the silica gel strip 8 is fixed on the housing 12, the silica gel sleeve 82 is located on one side of the silica gel strip 8 away from the outer wall of the housing 12, a clamping piece 83 is further fixed on one side of the silica gel strip 8 away from the housing 12, and a notch 831 for the silica gel sleeve 82 to penetrate out is formed on the clamping piece 83. Fixing holes are formed in the clamping piece 83 and the silica gel strip 8, the clamping piece 83 and the silica gel strip 8 are fixed on the outer wall of the shell body 12 through penetrating screws or bolts, the silica gel strip 8 is tightly pressed on the outer wall of the shell body 12 through the clamping piece 83, and the silica gel sleeve 82 is connected with the outer wall of the shell body 12 through the silica gel strip 8 in a sealing mode.

Referring to fig. 1 and 3, the silicone sleeves 82 are located between the heat dissipation fins 123 in a one-to-one correspondence.

Referring to fig. 3, a port 122 is formed in the inner wall of the pressurizing chamber 121 on the side facing the water filling chamber 821, and the port 122 connects the water filling chamber 821, the connection port 81, and the pressurizing chamber 121. The end of the outlet pipe 114 remote from the outlet passage 113 extends to near the through opening 122.

Referring to fig. 3, the silicone sleeve 82 has a certain toughness, after the water in the pressurizing cavity 121 enters the water filling cavity 821, the silicone sleeve 82 bulges, the silicone sleeve 82 abuts against the outer wall of the convex ring 6, and the side wall of the silicone sleeve 82 abuts against the flow passage 61.

Referring to fig. 3 and 4, the silicone sleeve 82 is provided with two guide slopes 822 on one side facing the flow channel 61.

Referring to fig. 1 and 4, two guiding inclined surfaces 822 are located at two ends of the silicone sleeve 82 close to the heat sink 123, and the guiding inclined surfaces 822 extend in a direction away from the convex ring 6 along a direction close to the heat sink 123.

Referring to fig. 3 and 4, the connecting strip 7 is fixed on the clamping piece 83, and the connecting strip 7 is located on one side of the silicone sleeve 82 away from the convex ring 6.

Referring to fig. 1 and 4, the clamping pieces 83 and the silicone strip 8 are bent to closely adhere to the outer wall of the heat sink 123, two ends of the connecting strip 7 are fixed on the clamping pieces 83 at two sides of the silicone sleeve 82 of the heat sink 123 closely adhered, and the water control plate 71 is fixed on the connecting strip 7.

Referring to fig. 3 and 4, the water control plate 71 abuts against the side wall of the silicone sleeve 82 away from the flow channel 61. The water control plate 71 supports the silica gel sleeve 82, so that the silica gel sleeve 82 can be better abutted against the flow passage 61.

Referring to fig. 1 and 2, a drainage ring 9 is fixed on a side wall of the casing 12 close to the rear end cover 13, the drainage ring 9 extends along a circumferential direction of the casing 12, a drainage channel 91 for supplying water to flow is arranged inside the drainage ring 9, the drainage channel 91 and the drainage ring 9 are coaxially arranged, five water inlets 92 are formed in one side of the drainage ring 9 away from the rear end cover 13, the water inlets 92 are communicated with the drainage channel 91, the water inlets 92 correspond to gaps between adjacent cooling fins 123 one by one, and the flow channels 61 correspond to the water inlets 92 one by one.

Referring to fig. 1 and 2, the end of the water discharging ring 9 away from the water inlet 92 is connected with a water outlet connector 93, and when the base 3 is supported on the ground, the water outlet connector 93 is located at the bottom of the water discharging ring 9.

The implementation principle of the space negative pressure heat dissipation motor in the embodiment of the application is as follows: when the motor is used, the heat-radiating fan rotates to pump out hot air in the shell body 12, so that the cooling effect is achieved;

meanwhile, the water inlet joint 112 is connected with the water pipe and conducts water at a high water flow rate, the water enters the pressurizing cavity 121 through the water outlet channel 113 and the water storage pipe after filling the clamping cavity 111, the silica gel sleeve 82 is filled with water with high water pressure, the silica gel sleeve 82 is enabled to be bulged, meanwhile, the water can be sprayed out from the flow channel 61, the bulged silica gel sleeve 82 abuts against the flow channel 61, the water outlet speed at the flow channel 61 is enabled to be low, and the water is easily sprayed between adjacent radiating fins 123 from the guide inclined plane 822 due to the fact that the silica gel sleeve 82 abuts against the flow channel 61, the contact area between the radiating fins 123 and the water is enabled to be increased, and therefore the radiating effect of the radiating fins 123 is improved. After water enters the gap between the fins 123, the water enters the water discharge ring 9 from the water inlet 92 along the gap, and is discharged from the water outlet joint 93 through the water discharge ring 9.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a space negative pressure heat dissipation motor, includes front end housing (11), shell body (12), rear end cap (13) and is located shell body (12) internal stator structure (2), be provided with radiator fan (4) in rear end cap (13), rotor structure (2) are decided to air inlet one side orientation of radiator fan (4), be provided with air outlet (131) on rear end cap (13), air outlet one side orientation air outlet (131) of radiator fan (4), its characterized in that: a clamping cavity (111) is formed in the front end cover (11), a water inlet joint (112) used for being connected with a water pipe is arranged on the front end cover (11), the water inlet joint (112) is communicated with the clamping cavity (111), a plurality of water outlet channels (113) are arranged on the side wall, facing the shell body (12), of the front end cover (11), a plurality of pressurizing cavities (121) are formed in the shell body (12), the plurality of pressurizing cavities (121) are arranged along the circumferential direction of the axis of the shell body (12), and the pressurizing cavities (121) are communicated with the water outlet channels (113) in a one-to-one correspondence manner;

the improved structure of the cooling water pump is characterized in that a convex ring (6) is arranged on the outer side wall, close to the front end cover (11), of the shell body (12), a flow channel (61) is formed in the convex ring (6), the flow channel (61) penetrates through the convex ring (6) along the direction far away from the front end cover (11), the flow channel (61) is communicated with the pressurizing cavity (121), a plurality of cooling fins (123) arranged at intervals are arranged on the shell body (12), and gaps between the adjacent cooling fins (123) of the flow channel (61) are in one-to-one correspondence.

2. The space negative pressure heat dissipation motor according to claim 1, characterized in that: a drainage ring (9) is arranged on the outer side wall, away from the front end cover (11), of the shell body (12), the drainage ring (9) extends along the circumferential direction of the shell body (12), a drainage channel (91) is arranged inside the drainage ring (9), and the drainage channel (91) is arranged along the circumferential direction of the axis of the drainage ring (9); the water inlet (92) is arranged on the side wall, facing the convex ring (6), of the drainage ring (9), the water inlets (92) correspond to gaps among the radiating fins (123) one by one, the water outlet joint (93) is arranged on the side wall of the drainage ring (9), and the water outlet joint (93) is located at one end, far away from the water inlet (92), of the drainage ring (9).

3. The spatial negative pressure heat dissipation motor of claim 2, wherein: the shell body (12) is provided with a plurality of through openings (122), and the through openings (122) are communicated with the pressurizing cavity (121); a silica gel sleeve (82) is fixed on the shell body (12), a water filling cavity (821) is arranged in the silica gel sleeve (82), the water filling cavity (821) is communicated with the through hole (122), the silica gel sleeve (82) is connected with the outer wall of the shell body (12) in a sealing mode, and the silica gel sleeve (82) is located between the adjacent radiating fins (123); after the silica gel sleeve (82) is filled with water, the outer wall of the silica gel sleeve (82) after being filled with water is abutted against the flow passage (61).

4. The spatial negative pressure heat dissipation motor of claim 3, characterized in that: be provided with water control board (71) between two adjacent fin (123), water control board (71) are located one side that runner (61) were kept away from in silica gel cover (82), one side that shell body (12) outer wall was kept away from in fin (123) is fixed with connecting strip (7), water control board (71) are fixed in on connecting strip (7), silica gel cover (82) fill water after, silica gel cover (82) one side butt runner (61), opposite side butt water control board (71).

5. The spatial negative pressure heat dissipation motor of claim 4, wherein: still include silica gel strip (8), it is equipped with a plurality of connectors (81) to open the interval on silica gel strip (8), fill water cavity (821) and connector (81) one-to-one intercommunication, silica gel cover (82) and silica gel strip (8) integrated into one piece, silica gel strip (8) are fixed in the outer wall of shell body (12).

6. The spatial negative pressure heat dissipation motor of claim 5, wherein: be provided with on silica gel strip (8) and press from both sides tight piece (83), set up breach (831) that supply silica gel cover (82) to pass on pressing from both sides tight piece (83), the fixed orifices has been seted up on pressing from both sides tight piece (83) and silica gel strip (8), shell body (12), press from both sides tight piece (83) and silica gel strip (8) are through wearing to establish bolt or fix with screw in the fixed orifices, silica gel strip (8) are located shell body (12) outer wall and press from both sides between tight piece (83).

7. The space negative pressure heat dissipation motor according to claim 1, characterized in that: the water outlet channel (113) is internally connected with a water outlet pipe (114), the water outlet pipe (114) is inserted in the pressurizing cavity (121), and the end part of the water outlet pipe (114) is close to the through hole (122).

8. The spatial negative pressure heat dissipation motor of claim 7, wherein: the water outlet pipe (114) is sleeved with a sealing ring (5), and the joint of the pressurization cavity (121) and the water outlet pipe (114) is arranged in a sealing mode.

9. A space negative pressure heat-dissipating motor according to claim 3, wherein: one side of the silica gel sleeve (82) facing the flow channel (61) is provided with two guide inclined planes (822), the two guide inclined planes (822) are positioned at two ends of the silica gel sleeve (82) close to the radiating fins (123) along the direction close to the radiating fins (123), and the guide inclined planes (822) are inclined along the direction far away from the convex ring (6).