CN220646303U - Pump with a pump body - Google Patents

Abstract

The utility model discloses a pump, comprising: a pump shell, wherein a first cavity and a second cavity are formed in the pump shell, and the first cavity is provided with a fluid inlet and a fluid outlet; a driving device fixed in the second chamber; a first bearing assembly disposed at a first end of the drive apparatus for separating the first chamber from the second chamber; the driving device comprises a rotating shaft, a first end of the rotating shaft is connected with the first bearing assembly, and a first end part of the rotating shaft is arranged in the first cavity; a fluid flow passage is formed in the rotating shaft, and a first heat dissipation flow passage is formed between the driving equipment and the pump shell; an inlet of the first heat dissipation flow channel is communicated with the first cavity, an outlet of the first heat dissipation flow channel is communicated with an inlet of the fluid flow channel, and an outlet of the fluid flow channel is communicated with the first cavity; the impeller is arranged in the first cavity and is fixed on the rotating shaft; the inlet of the impeller faces away from the drive means. Compared with the prior art, the utility model can increase the circulation flow velocity of the heat dissipation fluid and heat dissipation capacity, and is applicable to high-power pumps.

Description

Pump with a pump body

Technical Field

The utility model relates to the technical field of pumping, in particular to a pump.

Background

As a rotary machine, a pump converts electric energy into mechanical energy and pressurizes and delivers a working fluid using the interaction of an impeller with the boundary of a scroll at a circumferential mounting angle. However, the pump itself also generates heat, and therefore requires heat dissipation and cooling.

The existing pump heat dissipation system is generally characterized in that a through hole is formed in a shell, so that a rotor, a stator and a bearing inside the shell are communicated with a water absorption cavity, an impeller is placed in the water absorption cavity, and water flows from a low-pressure area to a high-pressure area to achieve a heat dissipation effect. Such a heat dissipation scheme may make the pump smaller, but at high power, the heat dissipation cross-sectional area may be reduced due to the flow of water from the low pressure area to the high pressure area, possibly resulting in insufficient heat dissipation, thereby reducing the pump life.

In the process of implementing the present utility model, the inventor finds that at least the following problems exist in the prior art: how to effectively improve the problem of insufficient heat dissipation caused by the reduction of the heat dissipation sectional area of a pump under the condition of high power is a problem which needs to be solved by the person skilled in the art at present.

Disclosure of Invention

The utility model aims to provide a pump so as to solve the technical problem of insufficient heat dissipation caused by the reduction of heat dissipation sectional area under the condition of high power in the prior art.

The present utility model provides a pump comprising:

a pump housing, in which a first cavity and a second cavity are formed, the first cavity being provided with a fluid inlet and a fluid outlet;

a driving device fixed in the second cavity;

a first bearing assembly disposed at a first end of the drive apparatus for separating the first and second chambers;

the driving device comprises a rotating shaft, a first end of the rotating shaft is connected with the first bearing assembly, and a first end part of the rotating shaft is arranged in the first cavity;

a fluid flow passage is formed in the rotating shaft, and a first heat dissipation flow passage is formed between the driving equipment and the pump shell; an inlet of the first heat dissipation flow channel is communicated with the first cavity, an outlet of the first heat dissipation flow channel is communicated with an inlet of the fluid flow channel, and an outlet of the fluid flow channel is communicated with the first cavity;

the impeller is arranged in the first cavity and is fixed on the rotating shaft; the inlet of the impeller faces away from the drive apparatus.

A pump as described above, wherein preferably the drive apparatus comprises a body, a stator assembly and a rotor assembly; the stator assembly is sealed on the main body, the rotor assembly is fixed on the rotating shaft, a second heat dissipation flow channel is formed between the stator assembly and the rotor assembly, an inlet of the second heat dissipation flow channel is communicated with the first cavity, and an outlet of the second heat dissipation flow channel is communicated with an inlet of the fluid flow channel.

In the pump as described above, preferably, the first bearing assembly includes a bearing housing and a first bearing, the bearing housing is connected to the first end of the rotating shaft through the first bearing, and the bearing housing is provided with a first water passing port communicating the fluid flow passage with the first heat dissipation flow passage and the second heat dissipation flow passage.

The pump as described above, preferably further comprises a second bearing assembly provided at the second end of the driving device, the second bearing assembly comprising a shaft seal and a second bearing, the shaft seal being connected to the second end of the rotating shaft through the second bearing, the shaft seal being provided with a second water passing port communicating with the first heat dissipation flow channel, the second heat dissipation flow channel and the fluid flow channel.

In the pump as described above, preferably, the first end of the main body is connected to the bearing housing, the second end of the main body is connected to the shaft seal, the first end of the main body is provided with a third water passing port communicating with the first heat dissipation flow channel and the second heat dissipation flow channel, and the second end of the main body is provided with a fourth water passing port communicating with the second heat dissipation flow channel and the first heat dissipation flow channel.

The pump as described above, wherein preferably, the main body is configured as a cylinder, the first heat dissipation flow channel is formed between the main body and the pump casing, the first end of the main body is provided with a bearing seat mounting seat, the third water passing port is close to the bearing seat mounting seat, the second end of the main body is provided with a shaft seal mounting seat, and the fourth water passing port is close to the shaft seal mounting seat.

In the pump, preferably, the shaft seal comprises a first cover plate, a sealing boss and a first shaft sleeve, wherein the sealing boss and the first shaft sleeve are arranged on the first cover plate, and the second water passing port is arranged on the first shaft sleeve; the shaft seal mounting seat comprises a second cover plate, a first shaft hole and a first sealing groove, wherein the first shaft hole and the first sealing groove are formed in the second cover plate; the second cover plate is provided with a wire arrangement port for a wire to pass through, the first shaft sleeve is sleeved into the first shaft hole and is fixed with the second bearing, and the sealing boss is adapted and fixed with the first sealing groove.

In the pump as described above, preferably, the bearing seat includes a third cover plate, and a second sleeve and a second shaft hole that are disposed on a first side of the third cover plate, the first water passing port is disposed on the third cover plate, and the second sleeve is disposed in the second shaft hole and is fixed with the first bearing; the bearing seat mounting seat comprises a second sealing groove, and the third cover plate is fixedly matched with the second sealing groove.

In one embodiment of the pump described above, a third sealing groove is preferably further provided on the second side of the third cover plate, said third sealing groove being adapted to be fixed to the pump housing.

The pump as described above, wherein preferably, the pump further comprises a control box, wherein a circuit control board is arranged in the control box, and the circuit control board is connected with a wire; the control box and the pump shell are integrally formed, or the control box is communicated with the pump shell through a sleeve.

Compared with the prior art, the driving device is fully contacted with the first heat dissipation flow channel because the driving device is a main heat source, and the first heat dissipation flow channel can effectively take away the heat of the driving device; meanwhile, as the impeller is fixed on the rotating shaft, and the inlet of the impeller is far away from the driving equipment, the inlet of the first heat dissipation flow channel is close to the high pressure side of the outlet of the impeller, and the outlet of the fluid flow channel is close to the suction side low pressure area of the inlet of the impeller, and fluid flows from the high pressure area to the low pressure area, so that heat dissipation is carried out on the driving equipment; and because the fluid flow channel is arranged on the rotating shaft, and the impeller is fixed on the rotating shaft and driven by the rotating shaft to rotate, the outlet of the fluid flow channel is close to the impeller central area on the suction side of the impeller, and the pressure difference formed between the inlet of the first heat dissipation flow channel and the outlet of the fluid flow channel is further increased by utilizing the characteristic that the impeller central area on the suction side of the impeller is lower than the blade area of the impeller, so that the heat dissipation sectional area of the pump is not reduced under the high power condition, the circulation flow rate of heat dissipation fluid can be increased, the heat dissipation capacity is improved, and the pump is applicable to a high-power pump.

Drawings

FIG. 1 is a perspective view of the overall structure of a first embodiment provided by the present utility model;

FIG. 2 is a top view of the overall structure of a first embodiment provided by the present utility model;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a perspective view of a body in one direction thereof in a first embodiment provided by the present utility model;

FIG. 5 is a perspective view of the main body in another direction in accordance with the first embodiment of the present utility model;

FIG. 6 is a side view of a body in a first embodiment provided by the present utility model;

FIG. 7 is a B-B cross-sectional view of FIG. 6;

FIG. 8 is a perspective view of a shaft seal in accordance with a first embodiment of the present utility model;

FIG. 9 is a perspective view of a bearing housing in one direction of a first embodiment provided by the present utility model;

FIG. 10 is another perspective view of a bearing housing in accordance with one embodiment of the present utility model;

FIG. 11 is a perspective view of an impeller in accordance with a first embodiment of the present utility model;

FIG. 12 is a side view of an impeller in accordance with a first embodiment of the present utility model;

FIG. 13 is a C-C cross-sectional view of FIG. 12;

fig. 14 is a perspective view of the overall structure in the second embodiment provided by the present utility model;

FIG. 15 is a top view of the overall structure of a second embodiment provided by the present utility model;

fig. 16 is a D-D cross-sectional view of fig. 15.

Reference numerals illustrate:

100-pump housing, 101-first chamber, 102-fluid inlet, 103-fluid outlet, 104-second chamber;

200-driving equipment, 201-a rotating shaft, 202-a fluid flow passage, 203-a first heat dissipation flow passage, 204-a second heat dissipation flow passage, 205-a main body, 206-a stator assembly, 207-a rotor assembly, 208-a bearing seat, 2081-a third cover plate, 2082-a second shaft sleeve, 2083-a second shaft hole, 2084-a third seal groove, 209-a first bearing, 210-a shaft seal, 2101-a first cover plate, 2102-a first shaft sleeve, 2103-a seal boss, 211-a second bearing, 212-a first water passing port, 213-a second water passing port, 214-a shaft seal mounting seat, 2141-a second cover plate, 2142-a first shaft hole, 2143-a first seal groove, 215-a flat cable port, 216-a bearing seat mounting seat, 2161-a second seal groove, 217-a first seal strip, 218-a second seal strip, 219-a third water passing port, 220-a fourth water passing port;

300-impeller, 301-water channel, 302-first plate, 303-second plate, 304-connecting plate, 305-first through hole, 306-second through hole, 307-first boss;

400-control box, 401-circuit control board, 402-wire.

Detailed Description

The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Example 1

As shown in fig. 1 to 13, an embodiment of the present utility model provides a pump including a pump housing 100, a driving apparatus 200, a first bearing assembly, and an impeller 300, wherein:

a first chamber 101 and a second chamber 104 are formed in the pump housing 100, the first chamber 101 being provided with a fluid inlet 102 and a fluid outlet 103, the first chamber 101 being immersed in a liquid medium, the liquid medium entering the first chamber 101 from the fluid inlet 102, the pump pressurizing the liquid medium and then delivering the liquid medium from the fluid outlet 103.

The driving device 200 is fixed in the second chamber 104, the driving device 200 is used for providing driving force for pump operation, and the first bearing assembly is arranged at the first end of the driving device 200 and is used for separating the first chamber 101 and the second chamber 104.

The driving apparatus 200 includes a rotation shaft 201, a first end of the rotation shaft 201 is connected to the first bearing assembly, and a first end portion of the rotation shaft 201 is disposed in the first chamber 101.

The impeller 300 is arranged in the first cavity 101 and is fixed on the rotating shaft 201, the axis of the impeller 300 is coincident with the axis of the rotating shaft 201, the impeller 300 and the rotating shaft 201 keep synchronous rotation, when the pump works, the rotating shaft 201 of the driving device rotates to drive the impeller 300 to work, liquid medium in the first cavity 101 is driven to enter the first heat dissipation flow channel 203 to serve as a refrigerant, then flows back to the first cavity 101 after entering the fluid flow channel 202 of the rotating shaft 201 to form an external circulation liquid cooling heat dissipation flow channel, wherein an inlet of the impeller 300 deviates from the driving device 200, namely, the inlet of the impeller 300 is arranged near an outlet of the fluid flow channel 202, and an outlet of the impeller 300 is near the inlet of the first heat dissipation flow channel 203; the inlet of the impeller 300 is the suction side of the impeller, which is a low pressure region, and the outlet of the impeller 300 is a high pressure region.

Compared with the prior art, the first heat dissipation flow channel 203 is formed between the driving device 200 and the pump shell 100, and the driving device 200 is a main heat source, so that the driving device 200 is fully contacted with the first heat dissipation flow channel 203, and the first heat dissipation flow channel 203 can effectively take away the heat of the driving device 200; meanwhile, the inlet of the first heat dissipation runner 203 is close to the high pressure side of the outlet of the impeller 300, and the outlet of the fluid runner 202 is close to the suction side low pressure region of the inlet of the impeller 300, and the fluid flows from the high pressure region to the low pressure region, so as to dissipate heat of the driving device 200; in addition, since the fluid flow channel 202 is disposed on the rotating shaft 201, and the impeller 300 is fixed on the rotating shaft 201 and driven by the rotating shaft 201 to rotate, the outlet of the fluid flow channel 202 is close to the central area of the impeller 300 on the suction side of the impeller 300, and the pressure difference between the inlet of the first heat dissipation flow channel 203 and the outlet of the fluid flow channel 202 is further increased by utilizing the characteristic that the central area of the impeller 300 on the suction side of the impeller 300 is lower than the vane area of the impeller 300, so that the heat dissipation sectional area of the pump is not reduced under the high power condition, the circulation flow rate of heat dissipation fluid can be increased, the heat dissipation capacity can be improved, and the pump is applicable to high power pumps. Furthermore, the pump requires only one fluid inlet 102, and no further openings are required for fluid entry, thereby reducing costs and risk of seal leakage.

In the embodiment provided herein, referring to fig. 3, the driving apparatus 200 includes a main body 205, a stator assembly 206, and a rotor assembly 207, wherein:

the stator assembly 206 is sealed on the main body 205, and the structure of the stator assembly 206 may refer to the existing structure of the prior art, which is not limited herein, and in one possible embodiment, the stator assembly 206 includes a stator main structure and a hydroelectric spacer, the hydroelectric spacer is fixed on the inner peripheral surface of the main body 205, the stator main structure is disposed in the hydroelectric spacer, and a plurality of driving coils encircle to form the stator main structure.

The rotor assembly 207 is fixed on the rotating shaft 201, and the structure of the rotor assembly 207 may refer to the existing structure of the prior art, and is not limited herein, for example, a plurality of permanent magnets may be selected as the rotor assembly 207.

When the stator assembly 206 is energized, a lorentz force is generated in the stator assembly 206, and the stator assembly 206 is fixed, and therefore a reaction force acts on the rotor assembly 207, and the reaction force becomes a driving force of the rotor assembly 207, and the rotor assembly 207 rotates about the axial direction of the rotating shaft 201.

The stator assembly 206 may change the direction of rotation of the rotor assembly 207 by changing the direction of the current, allowing the rotor assembly 207 to perform both clockwise and counter-clockwise rotation.

Further, referring to fig. 3, a second heat dissipation channel 204 is formed between the stator assembly 206 and the rotor assembly 207, an inlet of the second heat dissipation channel 204 is communicated with the first cavity 101, an outlet of the second heat dissipation channel 204 is communicated with an inlet of the fluid channel 202, when the pump works, the rotating shaft 201 of the driving device rotates to drive the impeller 300 to work, and the liquid medium in the first cavity 101 is driven to enter the second heat dissipation channel 204 to serve as a refrigerant, then flows back to the first cavity 101 after entering the fluid channel 202 of the rotating shaft 201, so as to form an internal circulation liquid cooling heat dissipation channel.

The liquid cooling composite heat dissipation pump provided by the utility model simultaneously carries out external circulation liquid cooling heat dissipation and internal circulation liquid cooling heat dissipation, and accelerates the circulation of water through the siphon effect of pressure difference, thereby accelerating the heat transfer effect of the refrigerant, circularly taking away the heat of the heat source (the stator assembly 206, the rotor assembly 207, the circuit control board 401 and the like) in the pump, improving the heat dissipation and cooling efficiency of the pump, and simultaneously reducing the risk of sealing leakage.

In a possible embodiment, referring to fig. 3, the first bearing assembly includes a bearing seat 208 and a first bearing 209, where the bearing seat 208 is connected to a first end of the rotating shaft 201 through the first bearing 209, the bearing seat 208 is provided with a first water passing port 212 that communicates with the first heat dissipation runner 203 and the second heat dissipation runner 204 and the fluid runner 202, and by providing the first water passing port 212, a fluid refrigerant in the first cavity 101 can enter the first heat dissipation runner 203 and the second heat dissipation runner 204 through the first water passing port 212, and after performing a heat exchange operation on the driving device, the fluid refrigerant flows back to the first cavity 101 through the fluid runner 202.

Referring to fig. 3, the second bearing assembly is further included at the second end of the driving device 200, the second bearing assembly includes a shaft seal 210 and a second bearing 211, the shaft seal 210 is connected with the second end of the rotating shaft 201 through the second bearing 211, the shaft seal 210 is provided with a second water passing port 213 communicating with the fluid flow channel 202 and the first heat dissipation flow channel 203 and the second heat dissipation flow channel 204, when the pump works, the rotating shaft 201 rotates, the driving impeller 300 works, and the fluid cold entering the first heat dissipation flow channel 203 and the second heat dissipation flow channel 204 enters the fluid flow channel 202 through the second water passing port 213 and then flows back to the first cavity 101.

The first end of the main body 205 is connected with the bearing seat 208, the second end of the main body 205 is connected with the shaft seal 210, the first end of the main body 205 is provided with a third water passing port 219 communicated with the first heat dissipation flow channel 203 and the second heat dissipation flow channel 204, and the second end of the main body 205 is provided with a fourth water passing port 220 communicated with the second heat dissipation flow channel 204 and the first heat dissipation flow channel 203.

The third water passing port 219 and the fourth water passing port 220 are respectively communicated with the first heat dissipation flow channel 203 and the second heat dissipation flow channel 204, and the refrigerant in the first cavity 101 enters the second heat dissipation flow channel 204 in the main body 205 through the first water passing port 212 under the driving of the impeller 300, and then enters the first heat dissipation flow channel 203 through the third water passing port 219; the refrigerant in the first heat radiation flow path 203 absorbs heat between the main body 205 and the pump casing 100, then enters the main body 205 through the fourth water passing port 220, merges with the refrigerant in the second heat radiation flow path 204, then enters the fluid flow path 202 through the second water passing port 213, and then flows back to the first chamber 101.

In a possible embodiment, the main body 205 is configured as a cylinder, the first heat dissipation channel 203 is formed between the main body 205 and the pump casing 100, the pump casing 100 and the main body 205 may be in a split structure or an integrally formed structure, without limitation, a first end of the main body 205 is provided with a bearing seat mounting seat 216, the third water passing port 219 is close to the bearing seat mounting seat 216, as shown in fig. 4, a second end of the main body 205 is provided with a shaft seal mounting seat 214, and the fourth water passing port 220 is close to the shaft seal mounting seat 214, as shown in fig. 5. The projection of the stator assembly 206 in the radial direction of the rotating shaft 201 falls between the third water passing port 219 and the fourth water passing port 220 to enhance the heat dissipation and cooling effects on the stator assembly 206.

Referring to fig. 4 to 7, the shaft seal 210 includes a first cover plate 2101, a sealing boss 2103 and a first shaft sleeve 2102 which are disposed on the first cover plate 2101, and the shaft seal mounting seat 214 includes a second cover plate 2141, and a first shaft hole 2142 and a first sealing groove 2143 which are disposed on the second cover plate 2141; the first shaft sleeve 2102 is sleeved into the first shaft hole 2142 and is fixed with the second shaft sleeve 211, the sealing boss 2103 is adapted to be fixed with the first sealing groove 2143, a first sealing adhesive tape 217 is arranged in the first sealing groove 2143, the sealing boss 2103 extends into the first sealing groove 2143 to press the first sealing adhesive tape 217 tightly, one end of the second cavity 104 is sealed, the second shaft sleeve 2102 is embedded with the second shaft sleeve 211, a plurality of second water passing ports 213 are annularly arranged on the outer peripheral surface of the first shaft sleeve 2102 at intervals, the first shaft sleeve 2102 is an annular boss, a gap is formed between the second shaft sleeve 211 and the first cover plate 2101, the first water passing ports 212 are arranged at positions corresponding to the gap, the rotating shaft 201 is rotatably supported on the second shaft sleeve 211, an inlet of the fluid channel extends into the first shaft sleeve 2102, and refrigerant of the first heat dissipation flow channel 203 and the second heat dissipation flow channel 204 can enter the first shaft sleeve 2102 from the second water passing ports 213, then enter the fluid channel 202 and then flow back to the first cavity 101.

By providing the plurality of second water passing ports 213 on the outer peripheral surface of the first shaft sleeve 2102, the passing efficiency of the refrigerant can be improved, and after the refrigerant in each position in the second cavity 104 enters the first shaft sleeve 2102 from the second water passing ports 213, the refrigerant can be conveyed uniformly and stably.

Referring to fig. 8 and 9, the bearing seat 208 includes a third cover plate 2081, and a second sleeve 2082 and a second shaft hole 2083 disposed on a first side of the third cover plate 2081, where the second sleeve 2082 is disposed in the second shaft hole 2083 and is fixed with the first bearing 209; the bearing seat mounting seat 216 comprises a second sealing groove 2161, the third cover plate 2081 is adapted and fixed with the second sealing groove 2161, the third cover plate 2081 is used for sealing the other end of the second cavity 104, the first bearing 209 is embedded in the second shaft sleeve 2082, the plurality of first water passing ports 212 are annularly arranged on the end face of the third cover plate 2081 at intervals, the through efficiency of the refrigerant can be improved by arranging the plurality of first water passing ports 212 on the end face of the third cover plate 2081, and the refrigerant in the first cavity 101 can enter the first heat dissipation flow channel 203 and the second heat dissipation flow channel 204 from the first water passing ports 212 to serve as the refrigerant.

In a possible embodiment, as shown in fig. 3 and fig. 9, a third sealing groove 2084 is further provided on the second side of the third cover plate 2081, the third sealing groove 2084 is adapted to be fixed to the pump casing 100, the second sealing adhesive tape 218 is provided in the third sealing groove 2084, a convex ring is provided in the pump casing 100, and the convex ring extends into the third sealing groove 2084 to press against the second sealing adhesive tape 218, so as to improve the sealing effect.

Further, the first bearing 209 and the second bearing 211 are oppositely disposed, two ends of the rotating shaft 201 are rotatably supported in the first bearing 209 and the second bearing 211 respectively, meanwhile, the axis of the rotating shaft 201, the axis of the stator assembly 206 and the axis of the rotor assembly 207 are coincident, and the magnetic field generated after the stator assembly 206 is electrified uniformly passes through the rotor assembly 207, so that the rotation of the rotor assembly 207 is more stable, and the problems of NVH (noise, vibration and harshness), abrasion and the like are effectively reduced.

In the embodiment provided in this application, referring to fig. 11 to 13, the impeller 300 includes a first plate 302, a second plate 303, and a connecting plate 304, where the first plate 302 and the second plate 303 are disposed at intervals along an axial direction of the rotating shaft 201, and the first plate 302 is closer to the driving device than the second plate 303, and in one possible embodiment, the first plate 302 and the second plate 303 have the same structure and are both disc-shaped plates, where:

the first plate 302 is provided with a first through hole 305, and the end of the rotating shaft 201 passes through the first through hole 305 to form a fixed fit with the first plate 302, and the fixing manner of the rotating shaft 201 and the first plate 302 can adopt various manners such as bolting, welding, and the like, which is not limited herein.

The second plate 303 is provided with a second through hole 306, the second through hole 306 is a circular hole, a first boss 307 is convexly arranged on the inner wall surface of the second through hole 306 towards one side deviating from the first plate 302, the outer contour surface of the first boss 307 is matched with the inner contour surface of the second through hole 306, the first boss 307 extends into the fluid inlet 102, and the outer peripheral surface of the first boss 307 is attached to the inner peripheral surface of the fluid inlet 102.

Referring to fig. 12 and 13, opposite ends of the connection plate 304 are respectively connected to the first plate 302 and the second plate 303, gaps between the first plate 302 and the second plate 303 form a water channel 301, a water inlet of the water channel 301 is located at an opening of the first boss 307, a water outlet of the water channel 301 is located between two adjacent connection plates 304, in a feasible embodiment, the connection plates 304 are curved plates, the connection plates 304 are provided with a plurality of connection plates 304, and the plurality of connection plates 304 are annularly arranged with an axis of the rotation shaft 201 as a central line.

When the pump works, a liquid medium enters the first boss 307 from the fluid inlet 102, is driven by the rotating impeller 300, is pumped out from the fluid outlet 103 under the action of centrifugal force, the inside of the first boss 307 is at a low pressure side, the periphery of the impeller 300 is at a high pressure side, one side of the impeller 300, which is close to the pump, is at a high pressure turbulence area, therefore, part of the liquid medium enters the second heat dissipation flow channel 204 from the high pressure turbulence area, part of the refrigerant enters the first heat dissipation flow channel 203 from the third water passing port 219, flows through the first heat dissipation flow channel 203, then flows into the fourth water passing port 220 and the second heat dissipation flow channel 204, then flows back to the low pressure side of the first cavity 101 after entering the fluid flow channel 202 of the rotating shaft 201, and the other part of the refrigerant flows back to the low pressure side of the first cavity 101 after flowing through the second heat dissipation flow channel 204, thus forming an internal circulation liquid cooling heat dissipation flow channel.

Whether an external circulation liquid cooling heat dissipation flow path or an internal circulation liquid cooling heat dissipation flow path, the refrigerant flows through the stator assembly 206 and the rotor assembly 207 uniformly, so that the cooling and heat dissipation efficiency is improved, the heat dissipation sectional area is large, the cooling efficiency is high, and the hydraulic loss is small.

Referring to fig. 1 to 3, the pump further includes a control box 400, in this embodiment, the control box 400 and the pump may be connected by bolts or welding to form an integral structure, without limitation, a circuit control board 401 is disposed in the control box 400, the circuit control board 401 is connected with a wire 402, a flat cable port 215 is disposed in the shaft seal mounting seat 214 for the wire 402 to pass through, the circuit control board 401 is electrically connected with the stator assembly 206 through the wire 402, in a possible implementation manner, the fourth water passing port 220 is disposed in a wall of the pump, the circuit control board 401 is disposed on a wall surface of the control box 400 near the pump, and when the refrigerant in the external circulation liquid cooling heat dissipation flow path flows through the fourth water passing port 220, heat exchange can be generated between the circuit control board 401, so as to dissipate heat and cool the circuit control board 401.

Example two

Unlike the first embodiment, the pump and the control box 400 are of a split type structure, and referring to fig. 14 to 16, one end of the pump is connected with the control box 400, a circuit control board 401 is arranged in the control box 400, the circuit control board 401 is connected with a wire 402, the other end of the wire 402 extends into the pump to be electrically connected with the stator assembly 206, and the wire 402 is integrated with a plastic heat-shrinkable sleeve to enhance waterproof capability.

In this embodiment, the control box 400 and the pump are in a split combined structure, and can be flexibly combined and installed, so that the pump has a smaller volume and a higher IP protection level; for the circuit control board 401 in the control box 400, heat can be intensively dissipated in the control box 400, and modes of cooling the control box 400 at a wind source or in an immersed mode and the like can be independently set, so that electronic interference can be shielded, and the temperature can be quickly lowered.

Other structures of the pump of this embodiment are the same as those of the first embodiment, and will not be described here again.

While the foregoing is directed to embodiments of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims (10)

1. A pump, comprising:

a pump housing, in which a first cavity and a second cavity are formed, the first cavity being provided with a fluid inlet and a fluid outlet;

a driving device fixed in the second cavity;

a first bearing assembly disposed at a first end of the drive apparatus for separating the first and second chambers;

the driving device comprises a rotating shaft, a first end of the rotating shaft is connected with the first bearing assembly, and a first end part of the rotating shaft is arranged in the first cavity;

a fluid flow passage is formed in the rotating shaft, and a first heat dissipation flow passage is formed between the driving equipment and the pump shell; an inlet of the first heat dissipation flow channel is communicated with the first cavity, an outlet of the first heat dissipation flow channel is communicated with an inlet of the fluid flow channel, and an outlet of the fluid flow channel is communicated with the first cavity;

the impeller is arranged in the first cavity and is fixed on the rotating shaft; the inlet of the impeller faces away from the drive apparatus.

2. The pump of claim 1, wherein the drive apparatus comprises a body, a stator assembly, and a rotor assembly; the stator assembly is sealed on the main body, the rotor assembly is fixed on the rotating shaft, a second heat dissipation flow channel is formed between the stator assembly and the rotor assembly, an inlet of the second heat dissipation flow channel is communicated with the first cavity, and an outlet of the second heat dissipation flow channel is communicated with an inlet of the fluid flow channel.

3. The pump of claim 2, wherein the first bearing assembly comprises a bearing housing and a first bearing, the bearing housing being connected to the first end of the shaft by the first bearing, the bearing housing being provided with a first water passage communicating the fluid flow passage with the first heat dissipation flow passage and the second heat dissipation flow passage.

4. A pump according to claim 3, further comprising a second bearing assembly provided at the second end of the drive device, the second bearing assembly comprising a shaft seal and a second bearing, the shaft seal being connected to the second end of the shaft by the second bearing, the shaft seal being provided with a second water passage communicating the first and second heat dissipation flow passages and the fluid flow passage.

5. The pump of claim 4, wherein the first end of the main body is connected to the bearing housing, the second end of the main body is connected to the shaft seal, the first end of the main body is provided with a third water passing port communicating the first heat dissipation flow channel and the second heat dissipation flow channel, and the second end of the main body is provided with a fourth water passing port communicating the second heat dissipation flow channel and the first heat dissipation flow channel.

6. The pump of claim 5, wherein the main body is configured in a cylindrical shape, the first heat dissipation flow channel is formed between the main body and the pump housing, a bearing seat mounting seat is arranged at a first end of the main body, the third water passing port is close to the bearing seat mounting seat, a shaft seal mounting seat is arranged at a second end of the main body, and the fourth water passing port is close to the shaft seal mounting seat.

7. The pump of claim 6 wherein the shaft seal comprises a first cover plate, a sealing boss and a first sleeve disposed on the first cover plate, the second water passing port disposed on the first sleeve; the shaft seal mounting seat comprises a second cover plate, a first shaft hole and a first sealing groove, wherein the first shaft hole and the first sealing groove are formed in the second cover plate; the second cover plate is provided with a wire arrangement port for a wire to pass through, the first shaft sleeve is sleeved into the first shaft hole and is fixed with the second bearing, and the sealing boss is adapted and fixed with the first sealing groove.

8. The pump of claim 7, wherein the bearing housing comprises a third cover plate, and a second hub and a second shaft hole disposed on a first side of the third cover plate, the first water port being disposed on the third cover plate, the second hub being disposed in the second shaft hole and being secured to the first bearing; the bearing seat mounting seat comprises a second sealing groove, and the third cover plate is fixedly matched with the second sealing groove.

9. The pump of claim 8, wherein the third cover plate second side is further provided with a third seal groove, the third seal groove being adapted to be secured with the pump housing.

10. The pump of any one of claims 1-9, further comprising a control box, wherein a circuit control board is disposed in the control box, and wherein the circuit control board is connected to a wire; the control box and the pump shell are integrally formed, or the control box is communicated with the pump shell through a sleeve.