An electromagnetic pump with multi-layer heat dissipation channels

Abstract

An electromagnetic pump with multiple layers of heat dissipation channels includes a pump core and a sleeve. The pump core is located in the sleeve. The pump core includes an axial iron core, a radial iron core and a coil. The radial iron core is fixed on the axial iron core, and the coil is located between the radial iron cores. A first heat dissipation channel is provided between the pump core and the inner wall of the sleeve. A ventilation gap is provided between the coils, and ventilation holes are provided on the radial iron core, which are connected to the ventilation gap. The ventilation holes on each radial iron core and the ventilation gap on each coil are sequentially connected along the axial direction to form a second heat dissipation channel. The axial iron core is coaxially arranged with the sleeve, and an axial through hole is provided at the center of the axial iron core, which is connected to the first heat dissipation channel and the second heat dissipation channel. The electromagnetic pump with multiple layers of heat dissipation channels of the present invention is provided with heat dissipation channels in the pump core iron core and the coil, so that each layer of turns in the coil is directly in contact with cold air, thereby enhancing the heat dissipation effect inside the coil.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic pumps, and in particular to an electromagnetic pump with multi-layer heat dissipation channels. Background Art

[0002] When using an electromagnetic pump to pump high-temperature liquid metal, the pump core needs to be specially treated for heat dissipation to prevent damage to the pump core due to excessive temperature. The existing cylindrical electromagnetic pump uses a ventilation pipe to extend into the bottom of the electromagnetic pump core to pump external cold air into the bottom of the pump core, and then discharge it through the gap between the pump core and the pump core sleeve to achieve heat dissipation. The coil is used as a heat source, and only the outer layer of the coil can be exposed to cold air for cooling. The inner layer of the coil does not have cold air passing through it, so heat dissipation is difficult and it is easy to burn out. Summary of the invention

[0003] The object of the present invention is to provide an electromagnetic pump core with multiple layers of heat dissipation channels and an electromagnetic pump equipped with the pump core, which cools the coil through multiple heat dissipation channels to overcome the defect that the internal heat dissipation of the coil of the existing electromagnetic pump core is difficult.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows:

[0005] An electromagnetic pump core with a multi-layer heat dissipation channel includes an axial iron core, a plurality of radial iron cores and a plurality of coils, wherein the radial iron core is fixed on the axial iron core, and the coils are located between the radial iron cores. A single coil includes a plurality of nested sub-coils, and at least one group of adjacent sub-coils has a ventilation gap; a single radial iron core has a plurality of ventilation holes that penetrate along the axial direction, and the ventilation holes are connected to the ventilation gaps; the ventilation holes on each radial iron core and the ventilation gaps on each coil are sequentially penetrated along the axial direction of the pump core to form a second heat dissipation channel.

[0006] Furthermore, the coil includes three single-layer cylindrical sub-coils, and the three single-layer cylindrical sub-coils are coaxially nested.

[0007] Furthermore, the ventilation holes on the single radial core are located on the same circular ring.

[0008] Furthermore, there are 6 ventilation holes on the single radial iron core, and the 6 ventilation holes are evenly spaced and distributed on the same circular ring.

[0009] Furthermore, the radial core is circular or polygonal.

[0010] The present invention also provides an electromagnetic pump with multi-layer heat dissipation channels, which includes a sleeve and the above-mentioned pump core, the pump core is located in the sleeve, and a first heat dissipation channel is axially connected between the pump core and the inner wall of the sleeve, and the first heat dissipation channel is connected to the second heat dissipation channel at the bottom of the sleeve.

[0011] Furthermore, the axial core is coaxially arranged with the sleeve, and an axial through hole is provided at the center of the axial core, and the axial through hole is connected with the first heat dissipation channel and the second heat dissipation channel at the bottom of the sleeve.

[0012] Furthermore, there is a gap between the outer edge of the coil and the inner wall of the sleeve, the outer periphery of the radial core is in contact with the inner wall of the sleeve, the outer edge of the radial core has a plurality of grooves, and the gap and the grooves are connected along the axial direction of the pump core to form a first heat dissipation channel.

[0013] Furthermore, the outer edge of the radial core has 6 grooves, and the 6 grooves are distributed at equal intervals.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are:

[0015] The electromagnetic pump with multi-layer heat dissipation channels of the present invention has a ventilation structure arranged in the pump core iron core and the coil, so that the inside of the pump core has multiple axially penetrating heat dissipation channels, and each layer of turns in the coil is directly in contact with cold air, thereby enhancing the heat dissipation effect inside the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an electromagnetic pump with multi-layer heat dissipation channels according to an embodiment of the present invention.

[0017] Figure 2 It is a cross-sectional view of the upper part of the electromagnetic pump.

[0018] Figure 3 It is a schematic diagram of the pump core structure.

[0019] Figure 4 It is a cross-sectional view of the lower part of the electromagnetic pump.

[0020] Figure 5 It is a schematic diagram of the radial core structure.

[0021] Figure 6 It is a schematic diagram of the coil structure.

[0022] Figure 7 It is a schematic diagram of the assembly relationship between the radial iron core and the coil. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figure 1-4As shown, an electromagnetic pump with a multi-layer heat dissipation channel includes a first sleeve 1, a second sleeve 2, a pump core 3 and a liquid collecting tank 4. The lower end of the first sleeve 1 is open, the lower end of the second sleeve 2 is closed, the first sleeve 1 and the second sleeve 2 are coaxially nested, and a pumping channel 5 is provided between the first sleeve 1 and the second sleeve 2. An overflow groove 401 is provided on one side of the liquid collecting tank 4. Under the action of the traveling wave magnetic field of the pump core 3, the liquid metal is lifted along the pumping channel 5 to the liquid collecting tank 4, and then flows out through the overflow groove 401. The pump core 3 is located in the second sleeve 2, and the pump core 3 includes an axial iron core 301, a radial iron core 302 and a coil 303. The radial iron core 302 is fixed on the axial iron core 301, and the coil 303 is located between the radial iron cores 302.

[0026] The radial core 302 is circular, and there is a gap between the radial core 302 and the inner wall of the second sleeve 2, and the gap is axially connected to form a first heat dissipation channel 6. Figure 3 and 5 As shown, the outer diameter of the coil 303 is smaller than the outer diameter of the radial core 302, so that there is a gap between the coil 303 and the inner wall of the second sleeve 2. The outer periphery of the radial core 302 is in contact with the inner wall of the second sleeve 2, and the outer edge of the radial core 302 has six grooves 7 distributed at equal intervals. The grooves 7 on each radial core 302 and the gap between the coil 303 and the inner wall of the second sleeve 2 are sequentially connected in the axial direction of the pump core to form a first heat dissipation channel 6, and the grooves are connected through the gap between the coil 303 and the second sleeve 2.

[0027] like Figure 5-7 As shown, the radial core 302 has six ventilation holes 8 extending axially in the middle, and the coil 303 is composed of three coaxially nested cylindrical coils, with a ventilation gap 304 between the middle cylindrical coil and the inner cylindrical coil. The ventilation holes 8 are connected to the ventilation gap 304 ( Figure 7 The ventilation holes 8 on each radial core 302 and the ventilation gaps 304 on each coil 303 are sequentially connected in the axial direction to form six second heat dissipation channels 9. The first heat dissipation channel 6 is connected to the second heat dissipation channel 9 at the bottom of the second sleeve 2.

[0028] The axial core 301 is coaxially arranged with the second sleeve 2. The center of the axial core 301 has an axial through hole 10. The axial through hole 10 is connected with the first heat dissipation channel 6 and the second heat dissipation channel 9 at the bottom of the second sleeve 2. The hollow part of the axial core 301 directly serves as a heat dissipation channel.

[0029] The upper part of the pump core 3 is provided with an air inlet pipeline 11, which is connected to the axial through hole 10. During the cooling process, the cold air is pumped into the second sleeve 2 through the axial through hole 10 through the air inlet pipeline 11, and then discharged through the first heat dissipation channel 6 and the second heat dissipation channel 9. The outer turns of the coil 303 are in contact with the cold air in the first heat dissipation channel 6, and the inner turns and middle turns of the coil 303 are in contact with the cold air in the second heat dissipation channel 9. Each layer of turns in the coil 303 is directly in contact with the cold air, which enhances the heat dissipation effect inside the coil 303.

Claims

1. An electromagnetic pump core with multi-layer heat dissipation channels, comprising an axial iron core, a plurality of radial iron cores and a plurality of coils, wherein the radial iron cores are fixed on the axial iron core, and the coils are located between the radial iron cores, characterized in that: A single coil includes a plurality of nested sub-coils, and at least one group of adjacent sub-coils has a ventilation gap between them; a single radial iron core has a plurality of ventilation holes extending axially therethrough, and the ventilation holes are connected to the ventilation gaps; the ventilation holes on each radial iron core and the ventilation gaps on each coil are sequentially connected along the axial direction of the pump core to form a second heat dissipation channel.

2. The electromagnetic pump core with multi-layer heat dissipation channels according to claim 1, characterized in that: The coil comprises three single-layer cylindrical sub-coils, and the three single-layer cylindrical sub-coils are coaxially nested.

3. The electromagnetic pump core with multi-layer heat dissipation channels according to claim 1, characterized in that: The ventilation holes on the single radial core are located on the same circular ring.

4. The electromagnetic pump core with multi-layer heat dissipation channels according to claim 3, characterized in that: There are six ventilation holes on the single radial iron core, and the six ventilation holes are evenly spaced and distributed on the same circular ring.

5. An electromagnetic pump core with multi-layer heat dissipation channels according to any one of claims 1 to 4, characterized in that: The radial core is circular or polygonal.

6. An electromagnetic pump with multi-layer heat dissipation channels, characterized in that: The invention comprises a sleeve and the pump core as claimed in claim 5, wherein the pump core is located in the sleeve, and a first heat dissipation channel is axially connected between the pump core and the inner wall of the sleeve, and the first heat dissipation channel is connected with a second heat dissipation channel at the bottom of the sleeve.

7. The electromagnetic pump with multi-layer heat dissipation channels according to claim 6, characterized in that: The axial iron core is coaxially arranged with the sleeve, and an axial through hole is provided at the center of the axial iron core. The axial through hole is connected with the first heat dissipation channel and the second heat dissipation channel at the bottom of the sleeve.

8. The electromagnetic pump with multi-layer heat dissipation channels according to claim 6, characterized in that: There is a gap between the outer edge of the coil and the inner wall of the sleeve, the outer periphery of the radial iron core is in contact with the inner wall of the sleeve, the outer edge of the radial iron core has a plurality of grooves, and the gap and the grooves are connected along the axial direction of the pump core to form a first heat dissipation channel.

9. The electromagnetic pump with multi-layer heat dissipation channels according to claim 8, characterized in that: The outer edge of the radial core is provided with 6 grooves, and the 6 grooves are distributed at equal intervals.

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