CN118066124A - Amphibious electric pump - Google Patents

Abstract

The invention belongs to the technical field of electric pumps, and particularly relates to an amphibious electric pump. Including motor and pump body, the pump body is installed on the motor, and wherein, the motor has: the shell comprises a main body part, a flange part, a heat radiation end cover, a plurality of heat conduction pipes and a heat conduction medium, wherein the heat radiation end cover is combined with the flange part and is arranged on the pump body; the heat conduction pipe contains: a heat absorbing section inserted into the main body; and the heat dissipation section is at least partially embedded into the flange part or/and the heat dissipation end cover and is used for conducting heat to the heat dissipation end cover. The heat conducting pipe can directly transfer the heat emitted by the motor heating source to a low Wen Chousong medium positioned in the pump body, and then the heat is continuously taken away by the pumping medium which originally flows rapidly, so that the motor cooling effect with more energy conservation and high efficiency is achieved.

Description

Amphibious electric pump

Technical Field

The invention belongs to the technical field of electric pumps, and particularly relates to an amphibious electric pump.

Background

Existing electric pumps can be generally divided into land-based electric pumps and submersible electric pumps according to the use situations. Both are provided with motors, and when the motors are operated, a part of loss always becomes heat, so that in order to prevent the motors from being damaged due to overhigh temperature caused by heat accumulation or to influence the normal operation of the motors, the heat must be continuously emitted. Conventional land-based electric pumps are usually provided with a fan structure, and radiate heat through the rotation of the fan, so that the power consumption is additionally increased, and the land-based electric pump is not suitable for a scene of diving. Conventional submersible pumps generally require submersion in a medium to rely on contact with the medium for surface heat dissipation, and thus cannot be used for long periods of time on land.

For market demands, submersible and land-based dual-purpose electric pumps are gradually derived from the market. Conventional amphibious electric pumps currently have two main categories. The closed amphibious electric pump with cooling liquid is characterized in that a pump body is additionally provided with a cooling sleeve, a cooling pipeline and other complex structures, so that the electric pump is large in size and high in manufacturing cost, and the risk of leakage of the cooling liquid is also met. The other type is an amphibious electric pump which is cooled by pumping medium by itself, namely, pumping medium flows through the outer side of the motor casing and is cooled by being in direct contact with the motor casing, so that a cooling sleeve is sleeved on the outer side of the motor casing, the electric pump is large in overall size and high in manufacturing cost, sundries in the pumping medium are easily accumulated in the cooling sleeve to cause blockage, in addition, components in the cooling sleeve are also easily corroded by the pumping medium, particularly, the motor casing is corroded to easily cause water inflow of the motor, and the service life and the use safety of the electric pump are directly influenced.

Disclosure of Invention

The invention aims to provide the amphibious electric pump which has high heat dissipation efficiency, simple structure, energy conservation and environmental protection.

The invention proposes an amphibious electric pump having the following characteristics: including motor and pump body, the pump body is installed on the motor, and wherein, the motor has: the shell comprises a main body part, a flange part, a heat radiation end cover, a plurality of heat conduction pipes and a heat conduction medium, wherein the heat radiation end cover is combined with the flange part and is arranged on the pump body; the heat conduction pipe contains: a heat absorbing section inserted into the main body; and the heat dissipation section is at least partially embedded into the flange part or/and the heat dissipation end cover and is used for conducting heat to the heat dissipation end cover.

In the amphibious electric pump according to the invention, it may also be characterized in that: the main body part is a cylinder which is in a cylinder shape, a plurality of mounting holes for mounting the heat-conducting pipes are uniformly formed in the cylinder along the circumferential direction, and a heat absorption section of one heat-conducting pipe is mounted in each mounting hole.

In the amphibious electric pump according to the invention, it may also be characterized in that: and gaps are arranged between the periphery of the heat conduction pipe and the inner wall of the mounting hole, fillers are filled in the gaps, the shell, the heat dissipation end cover and the heat conduction pipe are all made of heat conduction metal, and the filler is made of heat conduction silicone grease.

In the amphibious electric pump according to the invention, it may also be characterized in that: wherein, the inside inner chamber that is formed with of barrel, the intracavity is close to the barrel inner wall and is equipped with stator core, and the mounting hole is close to the barrel inner wall and offer, and the length of heat pipe embedding barrel is greater than or equal to stator core along the ascending length of casing axis.

In the amphibious electric pump according to the invention, it may also be characterized in that: wherein, n stator slots are arranged on the stator core, the number of the heat conduction pipes is m, and m is more than or equal to 0.5n.

In the amphibious electric pump according to the invention, it may also be characterized in that: the flange part is provided with a plurality of grooves for embedding the radiating sections towards one side of the radiating end cover at intervals, one end of each groove is communicated with the mounting hole, each radiating section is provided with a radiating surface for contacting with the radiating end cover, and when the radiating sections are embedded into the grooves, the radiating surfaces are flush with the end surfaces of the flange part or the radiating surfaces protrude out of the end surfaces of the flange part.

In the amphibious electric pump according to the invention, it may also be characterized in that: the motor is further provided with a main shaft, one end of the main shaft is arranged at the end part of the shell, the other end of the main shaft penetrates through the heat dissipation end cover to extend into the pump body and is provided with an impeller, and a mechanical seal is arranged between the main shaft and the heat dissipation end cover.

In the amphibious electric pump according to the invention, it may also be characterized in that: the heat conduction pipe is L-shaped, and has a main body section and a bending section, wherein the main body section is in a circular tube shape, the heat absorption section is arranged at one end of the bending section, one end of the bending section is connected with the main body section, the connecting part is in a smooth transition shape, the heat dissipation section in a flat shape is arranged at the other end of the bending section, and the width of the heat dissipation section is larger than the outer diameter of the connecting part.

In the amphibious electric pump according to the invention, it may also be characterized in that: the pump body is provided with an inlet and an outlet, a pump cavity is formed between the inlet and the outlet, and the impeller is rotatably arranged in the pump cavity; one end of the pump cavity facing the motor is provided with an opening, the heat dissipation end cover is arranged on the opening, one side of the heat dissipation end cover facing the pump cavity is provided with a plurality of heat conduction ribs, and a sealing ring is arranged between one side of the heat dissipation end cover facing the flange part and the flange part in a pressing mode.

In the amphibious electric pump according to the invention, it may also be characterized in that: the inner wall of the heat absorption section is provided with a sintering layer, a plurality of porous capillary structures are distributed on the sintering layer, a metal network is formed in the porous capillary structures, when the heat absorption section is contacted with a heat source, heat of the heat source enables a heat conducting medium to be changed into gas and flow to the heat dissipation section, the gas is converted into liquid after heat is dissipated from the heat dissipation section, and the liquid flows back to the heat absorption section under the capillary action and is uniformly adsorbed on the inner wall of the heat absorption section.

Effects and effects of the invention

According to the amphibious electric pump, as the heat-conducting pipe is arranged in the motor shell, the heat-radiating end cover is arranged between the shell and the pump body, the heat-absorbing section of the heat-conducting pipe is arranged in the main body part of the shell, the heat-radiating section is arranged on the flange part of the shell, the heat-conducting medium is arranged in the heat-conducting pipe, when the amphibious electric pump works, the heat-conducting medium in the heat-absorbing section absorbs heat generated by the motor, the heat-conducting medium can be gasified into gas and flows to the heat-radiating section due to heat absorption, the gas is liquefied and converted into liquid after heat is radiated by the heat-radiating section through the heat-radiating end cover and the pumping medium in the pump body, and then the liquid flows back to the heat-radiating section, so that the heat is circularly and reciprocally changed and flows to realize rapid heat radiation, that is, the heat-conducting pipe can directly transfer the heat emitted by the motor heat-generating source to the low Wen Chousong medium in the pump body, and then the heat is continuously taken away by the pumping medium originally flowing rapidly, so that the motor cooling effect with more energy conservation and high efficiency is achieved. In addition, the heat conducting pipe is arranged in the motor shell, so that no extra space is occupied, and the motor structure is not expanded, so that the heat-dissipating device has the advantages of high heat-dissipating efficiency, simple structure, energy conservation and environmental protection.

Drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a structural cross-sectional view of the present invention.

Fig. 3 is an exploded view of the structure of embodiment 1 of the present invention.

Fig. 4 is a structural diagram of embodiment 1 of the housing of the present invention.

Fig. 5 is a cross-sectional view of embodiment 1 of the housing of the present invention.

Fig. 6 is a structural diagram of a heat pipe according to embodiment 1 of the present invention.

Fig. 7 is a block diagram of a pump body of the present invention.

Fig. 8 is a view of the bottom surface of the heat dissipating end cap of the present invention.

Fig. 9 is a block diagram of the top view of the heat dissipating end cap of the present invention.

Fig. 10 is a structural diagram of a heat pipe according to embodiment 2 of the present invention.

Fig. 11 is a schematic sectional view of a heat dissipation segment mounting structure of a heat pipe according to embodiment 3 of the present invention.

Reference numerals: amphibious electric pump 100, motor 10, casing 11, main body 12, barrel 121, mounting hole 122, inner cavity 123, bearing groove 125, flange 13, annular mounting groove 131, groove 132, flange face 133, coil assembly 14, stator core 15, coil winding 16, rotor assembly 18, main shaft 19, pump body 20, inlet 21, outlet 22, pump cavity 23, opening 24, heat dissipating end cap 30, heat conducting ribs 31, mounting groove 32, recessed groove 33, heat conducting tube 40, heat absorbing section 41, heat dissipating section 42, heat dissipating face 421, heat conducting medium 43, impeller 50, first bearing 61, second bearing 62, mechanical seal 71, seal ring 72.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention easy to understand, the present invention will be specifically described below with reference to the examples and the accompanying drawings.

Example 1 ]

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a structural cross-sectional view of the present invention.

The present embodiment provides an amphibious electric pump 100, as shown in fig. 1, the amphibious electric pump 100 includes a motor 10 and a pump body 20, the motor 10 is mounted on the pump body 20, the motor 10 has a housing 11 and a heat dissipating end cap 30 combined with the pump body 20, and an impeller 50 capable of rotating under the drive of the motor 10 is disposed in the pump body 20. The heat dissipation end cover 30 is pressed between the casing 11 and the pump body 20, namely, one side of the heat dissipation end cover 30 is installed on the casing 11, the pump body 20 is installed on one side of the heat dissipation end cover 30 away from the motor 10, and the impeller 50 is rotatably arranged inside the pump body 20 under the driving of the motor 10. Specifically, the pump body 20 has an upper opening structure, the heat dissipating end cover 30 is covered at the upper opening, and the casing 11 is mounted on a side of the heat dissipating end cover 30 facing away from the pump body 20.

As shown in fig. 2, the housing 11 is fixed to a side of the heat radiation end cap 30 facing away from the pump body 20, and the housing 11 includes a main body 12 separated from the heat radiation end cap 30 and a flange 13 attached to the heat radiation end cap 30. The motor 10 further includes at least one heat conduction pipe 40, the heat conduction pipe 40 includes a heat absorption section 41 embedded in the main body 12 and a heat dissipation section 42 embedded in the flange 13 and/or the heat dissipation end cap 30, and a heat conduction medium 43 is disposed inside the heat conduction pipe 40. The heat pipe 40 is preferably a heat pipe, which is a heat transfer element that makes full use of the heat conduction principle and the rapid heat transfer property of the phase change medium, and rapidly transfers the heat of the heat generating object to the outside of the heat source through the heat pipe, so that the heat conduction capability is strong. The working principle of the heat pipe is as follows: after the heat absorption section 41 is heated, the working liquid (the liquid heat conducting medium 43) in the pipe body is heated and evaporated, steam flows to the heat dissipation section 42 of the heat pipe in the pipe body, the heat is condensed into liquid after being dissipated, and the liquid flows back to the heat absorption section 41 under the action of capillary force, so that a closed cycle is completed, and a large amount of heat is transferred from the heat absorption section 41 to the heat dissipation section 42. During processing, the heat pipe is internally pumped into a negative pressure state, and then is filled with proper cooling liquid (heat conducting medium 43) in the state, and then is sealed, and the liquid has low boiling point and is easy to volatilize.

Fig. 3 is an exploded view of the structure of embodiment 1 of the present invention.

Fig. 4 is a structural diagram of embodiment 1 of the housing of the present invention.

Fig. 5 is a cross-sectional view of embodiment 1 of the housing of the present invention.

In the embodiment shown in fig. 3 to 5, the main body 12 of the casing 11 is a cylindrical barrel 121 with an opening at one end, the flange 13 is a portion with a planar shape formed by extending the opening end of the barrel 121 outwards, the barrel 121 body is uniformly provided with a plurality of mounting holes 122 for mounting the heat conduction pipes 40 along the circumferential direction, the mounting holes 122 are blind holes with one closed end and one open end, the number of the mounting holes 122 is the same as that of the heat conduction pipes 40, and each mounting hole 122 is internally provided with one heat conduction pipe 40. In this embodiment, the materials of the housing 11, the heat dissipation end cover 30 and the heat pipe 40 are all heat conducting metals, wherein the materials of the housing 11 and the heat dissipation end cover 30 are preferably metal materials with high heat conductivity such as iron, aluminum, alloy steel, etc., and the materials of the heat pipe 40 are preferably copper, which is more favorable for heat conduction.

As shown in fig. 2 to 5, the inner side of the cylinder 121 is formed with an inner cavity 123, the motor 10 further has a coil assembly 14 (the coil assembly 14 includes a stator core 15 and a coil winding 16), a rotor assembly 18 and a main shaft 19, the coil winding 16 is wound around the stator core 15, and the length of the heat conduction pipe 20 embedded in the cylinder 121 is greater than or equal to the length of the stator core 15 along the axial direction of the casing 11, that is, the depth of the heat conduction pipe 40 in the cylinder 121 is flush with or even deeper than the stator core 15, so that the embedding depth of the heat conduction pipe 20 can cover the whole stator core, which is more beneficial for heat conduction. Because the depth of the mounting hole 122 is deep and is also a blind hole, there is a difficulty in actual machining, and it is difficult to ensure close contact with the heat conduction pipe. In order to solve the above problem, the hole diameter of the blind hole is set to be slightly larger than the outer diameter of the heat conducting tube, so that a clearance fit is formed between the heat conducting tube 40 and the mounting hole 122, that is, a clearance is formed between the outer periphery of the heat conducting tube 40 and the inner wall of the mounting hole 122, and a filler (such as heat conducting silicone grease) can be filled in the clearance. The heat on the inner wall of the cylinder 121 can be transferred to the heat conductive pipe 40 through the heat conductive silicone grease, in other words, the heat conductive silicone grease can form a flexible connection between the heat conductive pipe 40 and the inner wall of the mounting hole 122, so that the manufacturing precision of the mounting hole 122 can be greatly reduced, and the processing and the manufacturing of the mounting hole are facilitated.

In addition, n stator slots are formed in the stator core, the number of the heat conduction pipes 40 is m, wherein m is more than or equal to 0.5n, and the heat dissipation effect can be enhanced by limiting the number.

When the electric pump is operated, as part of the loss is changed into heat, the coil assembly 14 continuously radiates the heat and transmits the heat to the inner wall of the cylinder 121, and then transmits the heat to the heat absorption section 41 of the heat conduction pipe 40, the heat conduction medium in the heat absorption section 41 absorbs heat and evaporates, and the gaseous medium reaches the low-temperature heat pipe heat dissipation section 42. The heat pipes 40 are circumferentially arranged within the barrel 121, that is, the heat pipes 40 are circumferentially arranged around the stator core, which is also advantageous for conducting heat in a uniform and relatively dense manner in which a plurality of heat pipes 40 are distributed. On the basis of the above, in the processing procedure, if the distance between the heat conduction pipe 40 and the stator core 15 is properly reduced (i.e. the mounting hole 122 is perforated as close as possible to the inner wall of the machine barrel 11, so that the wall thickness is reduced), or the stator core may be arranged as close as possible to the inner wall of the machine barrel 11, the heat conduction is also facilitated.

As shown in fig. 2, one end of the main shaft 19 is fixed at the end of the casing 11, the other end of the main shaft 19 extends into the pump body 20 through the heat dissipation end cover 30 to be provided with the impeller 50, a first bearing 61 is arranged between one end of the main shaft 19 and the end of the casing 11, the inner cavity 123 has a structure with one end open and one end closed, and a bearing groove 125 for installing the first bearing 61 is formed at the closed end. A second bearing 62 and a mechanical seal 71 are provided between the other end of the main shaft 19 and the heat radiation end cap 30, and a seal ring 72 is provided between the flange 13 and the surface of the heat radiation end cap 30 facing the motor. The flange 13 is formed with an annular mounting groove 131 recessed inward toward the surface of the heat radiation end cap 30 for mounting the seal ring 72. The mechanical seal 71 and the sealing ring 72 enable the motor 10 to perform a submersible sealing function, enabling it to also operate in water to perform an "amphibious".

As shown in fig. 4, a plurality of grooves 132 in which the heat dissipation sections 42 of the heat conduction pipes 40 are embedded are distributed at intervals on one side of the flange portion 13 facing the heat dissipation end cover 30, adjacent grooves 132 are connected through a flange surface 133, and one end of each groove 132 is communicated with the corresponding mounting hole 122, so that the heat conduction pipe 40 can be inserted into the mounting hole 122. In addition, the contact surface between the heat dissipating end cap 30 and the flange 13 can be increased appropriately, which is also more advantageous for heat conduction.

Fig. 6 is a structural diagram of a heat pipe according to embodiment 1 of the present invention.

As shown in fig. 6, the overall shape of the heat pipe 40 is L-shaped, which has a vertical long section (i.e., a main section) and a short section (i.e., a bending section) that is transversely arranged, the main section is circular tube-shaped and has a heat absorbing section 41, or the whole main section is a heat absorbing section, one end of the bending section is connected with the main section and the connection part is smooth transition shape, the other end has a heat dissipating section 42 that is flat (e.g., rectangular), and the width of the heat dissipating section 42 is larger than the outer diameter of the arc at the connection part of the bending section and the main section. The side of the heat-dissipating segment 42 facing the heat-dissipating end cap 30 has a heat-dissipating surface 421 for contacting the heat-dissipating end cap 30, and when the heat-dissipating segment 42 is embedded in the groove 132, the heat-dissipating surface 421 is flush with the flange surface 133. The heat-dissipating section 42 is shaped like a flat, and the width of the flat is larger than the outer diameter of the arc at the connection of the bending section and the main body section, so that the heat-conducting capacity is enhanced by enlarging the contact surface between the heat-dissipating end cover 30 and the heat-dissipating section 42. The flat heat dissipation section 42 can be in near seamless fit with the plane of the heat dissipation end cover 30, and the gap between the flat heat dissipation section 42 and the heat dissipation end cover 30 is filled with heat conduction silicone grease, so that the heat of the heat dissipation section 42 is fully transferred to the heat dissipation end cover 30, then the heat of the heat dissipation end cover 30 is transferred to the low-temperature medium which is continuously pumped in the pump body 10 from the lower end and the heat is continuously taken away by the low-temperature medium.

Since the heat dissipation section 42 is flat (e.g., rectangular), the groove 132 on the flange 13 is also flat (e.g., square groove as shown in fig. 5). In addition, it should be noted that the long section and the short section are only described in the shapes listed in the present embodiment, in practical situations, the vertical length and the horizontal length may be set to be the same, and when the horizontal length is enlarged, the contact surface between the heat dissipating end cover 30 and the flange 13 is enlarged, which is also beneficial to heat conduction to some extent. In other words, the length of the heat pipe 40 and the size of the contact surface between the heat dissipating end cap 30 and the flange 13 can be appropriately adjusted according to the actual use. Likewise, the shape of the outer tube of the heat pipe 40L may be adapted according to the actual motor housing and the angle of the heat dissipating end cap arrangement.

The inner wall of the heat absorption section is provided with a sintering layer through a sintering process, a plurality of porous capillary structures with certain strength and heat conduction performance are distributed on the sintering layer, and a continuous metal network is formed in the porous capillary structures, so that the heat absorption section 41 has good capillary action, when the heat absorption section 41 is contacted with a heat source (a motor), heat of the heat source can gasify a heat conduction medium in the heat conduction pipe 40 into gas and flow to the heat dissipation section 42, the gas is liquefied and converted into liquid after the heat dissipation section 42 dissipates heat, and the liquid flows back to the heat absorption section 41 through capillary action and is uniformly adsorbed on the inner wall of the heat absorption section 41, so that the phenomenon of 'dry burning' formed by the fact that the inner wall of the heat absorption section 41 is locally free of medium adsorption can be effectively avoided, and the heat absorption efficiency can be effectively improved. In particular, the sintered layer sintered on the inner wall has the advantages of convenient installation and manufacture, high strength and difficult damage.

Fig. 7 is a block diagram of a pump body of the present invention.

As shown in fig. 7, the pump body 20 is provided with an inlet 21 and an outlet 22, as shown in fig. 2, the inlet 21 is provided at the bottom of the pump body 20, i.e. at one end relatively far away from the motor 10 and the heat dissipating end cover 30, the outlet 22 is provided at the side surface of the pump body 20, a pump cavity 23 is formed between the inlet 21 and the outlet 22, and the impeller 50 is rotatably arranged in the pump cavity 23. When in operation, the rotor assembly 18 drives the impeller 50 to continuously operate in the pump cavity 23 through the main shaft 19, low Wen Chousong medium (such as water flow) is sucked into the pump cavity 23 from the inlet 21, and the low temperature medium in the pump cavity 23 can collide and flow in the whole pump cavity 23 under the stirring of the impeller 50, and finally is sent out from the outlet 22.

Fig. 8 is a view of the bottom surface of the heat dissipating end cap of the present invention.

Fig. 9 is a block diagram of the top view of the heat dissipating end cap of the present invention.

One end of the pump cavity 23 facing the motor 10 is provided with an opening 24, namely an opening 24 above the pump body 20, and a heat dissipation end cover 30 is covered on the opening 24, as shown in fig. 8, one side (namely the bottom surface) of the heat dissipation end cover 30 facing the pump cavity 23 is provided with a plurality of heat conduction ribs 31, and the heat dissipation area is enlarged by adding the heat conduction ribs 31, so that heat conduction can be more facilitated. Because the water flow medium flows through the pump cavity, especially the bottom surface of the heat dissipating end cap 30, during the stirring process of the impeller 50, the temperature of the heat dissipating end cap 30 is low, and the heat at the heat dissipating section 42 can be continuously taken away by the water flow medium flowing through the heat dissipating end cap 30, so as to dissipate heat. In order to increase the heat conduction speed and capacity, the heat of the heat dissipation section 42 can be more rapidly conducted into the pumping medium by reducing the thickness of the heat dissipation end cover 30, and then reducing the thickness of the heat dissipation end cover 30. As shown in fig. 9, a side (i.e., top surface) of the heat dissipating end cap 30 facing the motor 10 is provided with a mounting groove 32 for mounting the spindle 19 at the middle.

The heat dissipation principle of this embodiment:

The heat generated during the operation of the motor 10 is transferred to the heat absorption section 41 of the heat conduction pipe 40 by the inner wall of the machine barrel 121, the first medium in the cylindrical pipe body of the heat absorption section 41 absorbs heat and evaporates to become a gaseous medium, the gaseous medium can reach the heat dissipation section 42 at low temperature, the flat heat dissipation section 42 is in near seamless fit with the plane of the heat dissipation end cover 30, and the heat generated during the condensation process is released through the copper outer wall of the heat dissipation section 42, is transferred to the heat dissipation end cover 30 and is taken away by the heat on the heat dissipation end cover 30 by the low-heat liquid pumped by the pump body because the other surface of the heat dissipation end cover 30 is contacted with the pumped medium in the inner cavity 23 of the pump body 20 (normally, the temperature of the pumped medium is lower than 40 ℃), and the temperature of the heat dissipation end cover 30 is far lower than the temperature of the flat heat dissipation section 42; the condensed first medium flows back to the heat absorption section 41 which is a straight pipe section through the capillary layer in the heat conduction pipe, and then enters the next heat absorption-evaporation-condensation-heat release cycle, so that the heat generated by the motor is taken away by the liquid medium pumped in the pump body through the conduction of the heat conduction pipe 40, and the heat dissipation of the motor is realized.

Example 2 ]

Fig. 10 is a structural diagram of a heat pipe according to embodiment 2 of the present invention.

The present embodiment is basically the same as embodiment 1 described above, except that as shown in fig. 10, the heat conduction pipe 40 of the present embodiment is in an L-shaped circular pipe shape as a whole, that is, the heat dissipation section 42 and the heat absorption section 41 are in the same shape, and the two sections are connected in a smooth transition. Correspondingly, the groove 132 on the flange part 13 is also designed into an arc-shaped groove, so that the heat conduction pipe 40 is convenient to fixedly mount. The heat dissipation principle of this embodiment is the same as that of embodiment 1 described above, and a repetitive description thereof will not be made here.

Example 3 ]

Fig. 11 is a schematic sectional view of a heat dissipation segment mounting structure of a heat pipe according to embodiment 3 of the present invention.

The present embodiment is substantially the same as embodiment 1 and embodiment 2 described above, except that, as shown in fig. 11, when the heat pipe 40 of the present embodiment is mounted on the housing 11, the bottom surface of the heat dissipation section 42 protrudes from the end surface of the flange portion 13 (i.e., the heat dissipation surface 421 protrudes from the flange surface 133), and a plurality of concave grooves 33 corresponding to the grooves 132 on the flange portion 13 are disposed on one side (i.e., the top surface) of the heat dissipation end cap 30 facing the motor 10, and each concave groove corresponds to each groove 132 one by one and is combined to form a position for mounting the heat dissipation section 42, so that a part of the heat dissipation section 42 is embedded in the flange portion 13, and another part is embedded in the heat dissipation section 42. The heat dissipation principle of this embodiment is the same as that of embodiment 1 described above, and a repetitive description thereof will not be made here. The installation mode of the heat dissipation section 42 in this embodiment further reduces the distance between the heat dissipation surface 421 at the bottom of the heat dissipation section 42 and the water flow medium, so as to further improve the heat dissipation efficiency to a certain extent.

Example 4 ]

This embodiment is substantially identical to embodiments 1-3 described above, except for the following: when the heat pipe 40 of the present embodiment is mounted on the housing 11, the heat dissipation section 42 is directly inserted into the flange 13, that is, the housing 11 is provided with an inner mounting hole having the same shape as the heat pipe 40 and communicating the main body 12 and the flange 13, for mounting the heat pipe 40. In this case, the inner mounting hole is difficult to process, and the whole housing 11 may be formed by casting the heat conductive pipe 40 outside, so that the heat conductive pipe 40 and the housing 11 can be directly integrated.

Effects and effects of the examples

The above embodiment provides an amphibious electric pump different from the conventional cooling mode, in which the heat pipe 40 is used to directly transfer the heat generated by the heat source of the motor 10 to the medium (such as water flow) with low Wen Chousong in the pump body 20, and then the pumping medium which flows rapidly takes away the heat continuously, so as to achieve the motor cooling effect with more energy saving and high efficiency.

The above embodiment uses the cooling mode of the heat-conducting pipe to cool, the heat-conducting pipe 40 has the super heat-conducting property that makes the heat-conducting coefficient about ten thousand times of that of the common metal, and the heat-conducting pipe 40 can transfer the temperature at a very fast speed. This allows heat to be conducted directly from the heat source to the outside of the motor 10, with significantly less thermal resistance than in conventional approaches, and with significantly faster heat transfer, making the motor 10 more prone to heat dissipation.

The embodiment uses the heat conduction pipe to conduct heat and cool, has simple and compact structure, saves complex structures such as a cooling sleeve, a cooling pipeline and the like compared with the similar electric pump, reduces the size of the whole electric pump, reduces the manufacturing cost, is beneficial to the use and the installation of the electric pump, does not need to use cooling liquid, and does not worry about the leakage of the cooling liquid.

The embodiment takes away the heat of the motor by using the pumping medium (i.e. the originally flowing low-temperature medium) of the electric pump, does not need to add any additional kinetic energy, and is energy-saving and environment-friendly.

The embodiment is cooled by utilizing a heat conduction pipe in a heat conduction cooling mode, and the medium is not directly contacted with the motor shell for cooling, so that the damage to the electric pump and the influence on the use safety caused by the corrosion of the motor shell are avoided.

The above embodiments are only preferred embodiments of the present invention, and therefore, the scope of the present invention is not limited by the above embodiments, and all equivalent unit changes made by the description and the accompanying drawings of the present invention are directly or indirectly applied to other related technical fields, which are all included in the scope of the present invention.

Claims (10)

1. The amphibious electric pump is characterized by comprising a motor and a pump body,

Wherein the motor has:

a housing having a main body portion and a flange portion,

A heat-dissipating end cap combined with the flange portion and mounted on the pump body, and

A plurality of heat conduction pipes, in which a heat conduction medium is arranged;

The heat conduction pipe comprises:

a heat absorbing section inserted into the main body portion,

And the heat dissipation section is at least partially embedded into the flange part or/and the heat dissipation end cover.

2. An amphibious electric pump as claimed in claim 1, wherein,

The main body part is a cylinder, a plurality of mounting holes for mounting the heat conduction pipes are uniformly formed in the cylinder along the circumferential direction, and each mounting hole is internally provided with a heat absorption section of each heat conduction pipe.

3. An amphibious electric pump as claimed in claim 2, wherein,

And a gap is arranged between the periphery of the heat conduction pipe and the inner wall of the mounting hole, heat conduction silicone grease is filled in the gap, and the shell, the heat dissipation end cover and the heat conduction pipe are all made of heat conduction metal.

4. An amphibious electric pump as claimed in claim 2, wherein,

The heat conducting tube is inserted into the machine barrel, and the length of the heat conducting tube inserted into the machine barrel is greater than or equal to the length of the stator core along the axial direction of the machine shell.

5. An amphibious electric pump as claimed in claim 4 wherein,

Wherein, n stator slots are arranged on the stator core, and the number of the heat conduction pipes is m, and m is more than or equal to 0.5n.

6. An amphibious electric pump as claimed in claim 2, wherein,

The flange portion faces one side of the radiating end cover, a plurality of grooves for embedding the radiating sections are distributed at intervals, one end of each groove is communicated with the mounting hole, each radiating section is provided with a radiating surface for contacting with the radiating end cover, and when the radiating section is embedded into the grooves, the radiating surfaces are flush with the end face of the flange portion or protrude out of the end face of the flange portion.

7. An amphibious electric pump as claimed in any one of claims 1 to 6 wherein,

The motor is further provided with a main shaft, one end of the main shaft is installed at the end part of the shell, the other end of the main shaft penetrates through the heat dissipation end cover to extend into the pump body and is provided with an impeller, and a mechanical seal is arranged between the main shaft and the heat dissipation end cover.

8. An amphibious electric pump as claimed in any one of claims 1 to 6 wherein,

Wherein the heat conduction pipe is provided with a main body section and a bending section,

The main body section is in a circular tube shape and is provided with the heat absorbing section,

One end of the bending section is connected with the main body section, the connecting part is in a smooth transition shape, and the other end of the bending section is provided with the heat dissipation section which is flat.

9. An amphibious electric pump as claimed in claim 7 wherein,

The pump comprises a pump body, and is characterized in that an inlet and an outlet are formed in the pump body, a pump cavity is formed between the inlet and the outlet, the impeller is rotatably arranged in the pump cavity, one end of the pump cavity, which faces the motor, is provided with an opening, a heat dissipation end cover is arranged on the opening, one side of the heat dissipation end cover, which faces the pump cavity, is provided with a plurality of heat conduction ribs, and a sealing ring is arranged between one side of the heat dissipation end cover, which faces the flange, in a pressing mode.

10. An amphibious electric pump as claimed in any one of claims 1 to 6 wherein,

The inner wall of the heat absorption section is provided with a sintering layer, a plurality of porous capillary structures are distributed on the sintering layer, and a metal network is formed in the porous capillary structures.