Anti-condensate circulation pump

Abstract

The present invention discloses an anti-condensate type circulation pump, comprising a motor, a pump casing and an impeller, wherein the impeller is arranged in the pump casing, the rotor of the motor is connected to the impeller, the motor comprises a DC three-phase stator coil and a rotor, the DC three-phase stator coil and a temperature sensor are plastic-sealed in the same injection molding body, the temperature sensor is used to detect the temperature of the DC three-phase stator coil, the injection molding body has an electromagnetic drive cavity, and the rotor is arranged in the electromagnetic drive cavity. Since the DC three-phase stator coil is plastic-sealed in the injection molding body, the insulation effect is quite good, which effectively solves the problem that the condensed water causes the stator coil of the motor to short-circuit; in particular, the stator coil and the temperature sensor are plastic-sealed in the same injection molding body, and the temperature of the plastic-sealed stator coil can be accurately detected. In addition, this patent also has the characteristics of easy installation, good insulation, orderly arrangement of lead wires along the wiring groove, compact structure, and good heat dissipation.

Description

Technical Field

[0001] The invention relates to a water pump, in particular to a circulation pump. Background Art

[0002] In the prior art, the motor stator in the circulating pump is plastic-sealed, but the problems are: first, the temperature of the stator cannot be accurately detected; second, the heat dissipation of the motor is poor; third, the insulating sleeve of the stator is inconvenient to install, because it is not completely covered, so the insulation is poor; fourth, the existing waterproof power connector is fixed with a nut, and due to the limited space on the shell, it has the defect of being inconvenient to install; fifth, the coil lead wires are easy to contact each other or cross.

[0003] For example, on April 6, 2018, a patent document with a publication number of 207195210U was published. The invention relates to a shielded circulation pump, which solves the problems in the prior art that the shielding sleeve is a split structure, has poor concentricity, and requires high processing precision. The technical solution adopted is: the stator is plastic-sealed in the motor housing, and the part of the motor housing between the stator and the rotor forms a shielding sleeve. The motor housing is closed at one end and open at the other end. The open end cooperates with the pump housing, and the inner wall of the closed end forms a first fixed shaft support seat, which is an integrated structure with the motor housing. The above patent document has the above defects. Summary of the invention

[0004] In order to overcome the above-mentioned disadvantages, an object of the present invention is to provide an anti-condensate type circulating pump capable of accurately detecting the stator temperature.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The anti-condensate type circulation pump includes a motor, a pump housing and an impeller, wherein the impeller is arranged in the pump housing, and the rotor of the motor is connected to the impeller. The motor includes a DC three-phase stator coil and a rotor, wherein the DC three-phase stator coil and a temperature sensor are plastic-sealed in the same injection molding body, wherein the temperature sensor is used to detect the temperature of the DC three-phase stator coil, wherein the injection molding body has an electromagnetic drive cavity, and the rotor is arranged in the electromagnetic drive cavity. After being plastic-sealed, the problem of the stator coil being short-circuited by the condensed water in the motor is effectively solved.

[0007] Furthermore, the motor also includes a shell, a circuit board and a top cover, the upper port of the shell is open, the top cover is arranged at the upper port of the shell, the injection-molded body is located in the shell, the lower end of the injection-molded body extends out of the lower end of the shell, the lower end of the shell and the injection-molded body are closed, and a gap is reserved between the upper section of the shell and the injection-molded body. When the circuit board is installed at the upper end of the injection-molded body in the shell, multiple components on the circuit board are located in the gap.

[0008] Furthermore, the injection molded body is a cylindrical injection molded body, the length and width of the upper section of the shell are greater than the length and width of the lower section of the shell; the lower section of the shell is a square structure, and mounting through holes are provided at the four corners of the lower section of the shell; the upper section of the shell is a square structure, and the four corners of the upper section of the shell extend into the shell, and the end face of the shell forms a cross structure; a plurality of supporting protrusions are provided on the inner wall of the shell, and the circuit board is placed flat on the supporting protrusions and fixed with screws; a gap is reserved between the lower section of the shell and the columnar plastic-sealed stator; the columnar plastic-sealed stator is integrally formed with the shell by injection molding.

[0009] Furthermore, two wire holes are formed on the upper side wall of the shell, and waterproof power connectors are provided in the two wire holes. Slots are provided on both sides of the waterproof power connector. The two waterproof power connectors are divided into two pieces that extend into the shell through the wire holes and are fixed with the same plug in the shell. The plug is provided with two plug slots corresponding to the two waterproof power connectors, and the slot walls of the plug slots are inserted into the corresponding slots of the waterproof power connectors. A sealing gasket is provided between the waterproof power connector and the shell.

[0010] Furthermore, the DC three-phase stator coil includes a circular iron core, an insulating sleeve and a coil, the circular iron core includes a circular sleeve, 6 winding posts and 6 arc plates, the 6 winding posts are radially distributed in the circular sleeve, one end of the winding post is connected to the inner wall surface of the circular sleeve, the arc plate is connected to the other end of the winding post, the 6 arc plates surround a circular cavity, there is a gap between adjacent arc plates, the insulating sleeve is used to wrap the 6 winding posts and the inner wall surface of the circular sleeve, and the coil is wound on the surface of the insulating sleeve on the winding post. The gap of the 6 arc plates reserves space for the winding process of the coil; the circular sleeve, the 6 winding posts and the 6 arc plates are integrally formed.

[0011] Furthermore, the insulating sleeve is formed by plugging an upper insulating sleeve and a lower insulating sleeve.

[0012] Furthermore, the upper semi-insulating sleeve comprises an upper inner liner ring sleeve, 6 upper U-shaped winding pole sleeves and an upper arc-shaped lining plate. The upper inner liner ring sleeve is provided with 6 through holes distributed along the circumferential direction. The 6 upper U-shaped winding pole sleeves are connected to the inner wall surface of the upper inner liner ring sleeve and are respectively located at the 6 through holes. The through holes correspond to and are connected to one side of the U-shaped cavity of the upper U-shaped winding pole sleeve. The upper arc-shaped lining plate is connected to the other side of the U-shaped cavity of the upper U-shaped winding pole sleeve. The upper inner liner ring sleeve is inserted into the upper port of the circular ring sleeve of the circular iron core and is tightly attached to the upper section of the inner wall surface of the circular ring sleeve. The U-shaped winding pole sleeve is wrapped around the outer periphery of the upper section of the winding pole, and the arc-shaped lining plate is tightly attached to the outer side of the upper section of the arc plate. The lower semi-insulating sleeve comprises a lower inner liner ring sleeve, 6 lower U-shaped winding pole sleeves and a lower arc-shaped lining plate, and 6 through holes are distributed circumferentially under the lower inner liner ring sleeve, and the 6 lower U-shaped winding pole sleeves are connected to the inner wall surface of the lower inner liner ring sleeve and are respectively located at the 6 through holes, and the through holes correspond to and are connected to one side of the U-shaped cavity of the lower U-shaped winding pole sleeve, and the lower arc-shaped lining plate is connected to the other side of the U-shaped cavity of the lower U-shaped winding pole sleeve, and the lower inner liner ring sleeve is inserted into the lower port of the circular ring sleeve of the circular iron core, and is tightly attached to the lower section of the inner wall surface of the circular ring sleeve, the lower U-shaped winding pole sleeve is wrapped around the outer periphery of the lower section of the winding pole, and the lower arc-shaped lining plate is tightly attached to the outer side surface of the lower section of the arc plate.

[0013] Furthermore, the upper end of the upper arc lining plate is connected to an upper baffle plate of the coil, and the inner side surface of the upper baffle plate of the coil is flush with the inner surface of the arc plate of the circular iron core; the lower end of the lower arc lining plate is connected to a lower baffle plate of the coil, and the inner side surface of the lower baffle plate of the coil is flush with the inner surface of the arc plate of the circular iron core.

[0014] Furthermore, the upper end of the upper insulating sleeve is provided with an outer protective ring on the upper side of the coil, and the outer protective ring on the upper side of the coil is provided with lead-out wire passage grooves at intervals; the lower end of the lower insulating sleeve is provided with an outer protective ring on the lower side of the coil, and the outer side surface of the outer protective ring on the lower side of the coil is provided with wiring grooves, and the wiring grooves are V-shaped structures, and the outer protective ring on the lower side of the coil is provided with 6 copper wire passage grooves at intervals, and the 6 copper wire passage grooves correspond to the 6 coils respectively, and the coils facing each other are connected in series, and the groove depths of the two copper wire passage grooves corresponding to the coils facing each other are the same, so that the groove bottom can correspond to the wiring groove. With the design of the same groove depth, when the coils facing each other are connected in series, the lead-out copper wires are arranged in an orderly manner along the wiring grooves, and there will be no cross-leading phenomenon.

[0015] The beneficial effects of the present invention are:

[0016] Since the DC three-phase stator coil is sealed in the injection molded body, the insulation effect is quite good, which effectively solves the problem of condensed water causing short circuit in the stator coil of the motor; in particular, the stator coil and the temperature sensor are sealed in the same injection molded body, which can accurately detect the temperature of the sealed stator coil. Once the required temperature is exceeded, the thermostat will immediately cut off the power supply of the coil, which can play a good protective role for the stator coil.

[0017] Since the stator is designed into the structure of the above-mentioned six coil windings, and the coils facing each other are connected in series, especially gaps are left between adjacent coil windings, it is convenient for the equipment to wind the coils.

[0018] Since the insulating sleeve adopts the structural form of an upper insulating sleeve and a lower insulating sleeve, the upper insulating sleeve and the lower insulating sleeve are plugged into each other to completely cover the winding pole, which not only facilitates installation but also has good insulation performance.

[0019] Since a wiring groove is added on the outside of the insulating sleeve, the lead-out copper wires can be arranged in order along the wiring groove, especially the groove depths of the two copper wires corresponding to the two opposite coils are the same. This design makes the groove bottom just correspond to the wiring groove of the lead-out wire in the groove, and when the lead wires of the two opposite coils are connected, there will be no cross-dislocation phenomenon.

[0020] Since a gap is reserved between the upper section of the housing and the columnar plastic-sealed stator, and the distribution of components on the circuit board is adjusted, except for the main control chip located in the middle of the circuit board, other large components are arranged around the circuit board. When the circuit board is installed, the large components are located in the gap. This design can reduce the size of the housing, not only making the overall structure more compact, but also helping to dissipate heat;

[0021] Since the two waterproof power connectors are fixed with the same plug, the plug-in fixing method greatly facilitates installation.

[0022] Since the upper part of the shell adopts a cross-shaped structure, space is reserved for the installation of the waterproof power connector. The installation orientation of the waterproof power connector can be installed in a direction 90° perpendicular to the horizontal shaft, which solves the problem of limited direction of electrical connection of conventional motors and realizes all-round worry-free steering assembly. This design provides users with more installation space and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described with the aid of the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other accompanying drawings according to the following drawings without creative work:

[0024] Figure 1 It is a front view of the present invention;

[0025] Figure 2 for Figure 1 A perspective view of the impeller and rotor shown;

[0026] Figure 3 for Figure 1 a cross-sectional view of the motor shown;

[0027] Figure 4 for Figure 3 A three-dimensional view of the housing and the injection molded body shown;

[0028] Figure 5 for Figure 4 Side view shown;

[0029] Figure 6 is a schematic diagram of the structure of the insert;

[0030] Figure 7 It is a schematic diagram of the structure of the waterproof power connector;

[0031] Figure 8 for Figure 3 The structural schematic diagram of the DC three-phase stator coil is shown;

[0032] Fig. 9 for Figure 3 A three-dimensional diagram of a DC three-phase stator coil is shown;

[0033] Fig.10 for Fig. 9 The structural schematic diagram of the circular iron core shown;

[0034] Fig.11 for Fig.10 A perspective view of the circular core shown;

[0035] Fig.12 for Fig. 9 A perspective view of the insulating sleeve shown;

[0036] Fig.13 for Fig.12 A schematic diagram of the structure of the upper insulating sleeve shown;

[0037] Fig.14 for Fig.13 A perspective view of the upper insulating sleeve shown;

[0038] Fig.15 for Fig.12 The structural schematic diagram of the lower half insulating sleeve is shown;

[0039] Fig.16 for Fig.15 A perspective view of the lower insulating sleeve half is shown.

[0040] In the figure: 1, DC three-phase stator coil; 2, temperature sensor; 3, injection molding; 4, electromagnetic drive cavity; 5, insulation sleeve; 6, coil; 7, circular ring sleeve; 8, winding column; 9, arc plate; 10, circular cavity; 11, gap; 12, circular iron core; 13, upper insulating sleeve; 14, lower insulating sleeve; 15, upper liner ring sleeve; 16, upper U-shaped winding column sleeve; 17, upper arc lining plate; 18, Through hole; 19, baffle plate on the upper side of the coil; 20, outer protective ring on the upper side of the coil; 21, lead-out wire passing groove; 22, lower inner liner ring; 23, lower U-shaped winding column sleeve; 24, lower arc liner; 25, through hole; 26, outer protective ring on the lower side of the coil; 27, baffle plate on the lower side of the coil; 28, wiring groove; 29, copper wire passing groove; 30, motor; 31, pump casing; 32, impeller; 33, rotor; 34, casing; 35. Circuit board; 37. Top cover; 38. Support protrusion; 40. Gap; 41. Components; 42. Lower cover; 43. Main control chip; 44. Through hole; 45. Boss; 46. Heat sink; 47. Upper section of the shell; 48. Lower section of the shell; 49. Mounting through hole; 50. Wire hole; 51. Waterproof power connector; 52. Slot; 53. Insert; 54. Insert slot; 55. Sealing gasket. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0042] like Figure 1 , 2 As shown in Figure 3, the condensate-proof circulation pump includes a motor 30, a pump housing 31 and an impeller 32. The impeller 32 is arranged in the pump housing 31. The rotor 33 of the motor 30 is connected to the impeller 32. The motor includes a DC three-phase stator coil 1 and a rotor 33. The DC three-phase stator coil 1 and a temperature sensor 2 are plastic-sealed in the same injection molding body 3. The temperature sensor 2 is used to detect the temperature of the DC three-phase stator coil 1. The injection molding body 3 has an electromagnetic drive cavity 4, and the rotor 33 is arranged in the electromagnetic drive cavity 4. After being plastic-sealed, the problem of the stator coil being short-circuited by the condensed water in the motor is effectively solved.

[0043] The motor 30 also includes a shell 34, a circuit board 35 and a top cover 37. The upper end of the shell 34 is open, and the top cover 37 is arranged at the upper end of the shell 34. The injection molded body 3 is located in the shell 34. A plurality of supporting protrusions 38 are provided on the inner wall of the shell 34. The circuit board 35 is placed flat on the supporting protrusions 38 and fixed with screws. A gap 40 is reserved between the upper section of the shell 34 and the injection molded body 3. When the circuit board 35 is installed at the upper end of the columnar plastic-sealed stator in the shell, a plurality of components 41 on the circuit board 35 are located in the gap 40. The lower end of the injection molded body 3 extends out of the lower end of the shell 34. The lower end of the shell 34 and the injection molded body 3 are closed. The injection molded body 3 is integrally formed with the shell 34 by injection molding. A lower cover plate 42 is provided below the top cover 37. A through hole 44 is provided on the surface of the lower cover plate 42, which is opposite to the main control chip 43 on the circuit board 35. A boss 45 corresponding to the through hole 44 is provided on the lower surface of the top cover 37. The boss 45 passes through the through hole 44 and contacts the surface of the main control chip 43, which can play a role in heat dissipation. A heat sink 46 is provided on the surface of the top cover 37.

[0044] like Figure 4 , 5 As shown in Figures 6 and 7, the injection molded body 3 is a cylindrical plastic-sealed stator, and the length and width of the upper section 47 of the shell are greater than the length and width of the lower section 48 of the shell. This design allows a larger gap to be reserved between the upper section of the shell and the columnar plastic-sealed stator. The lower section of the shell is a square structure, and mounting through holes 49 are provided at the four corners of the lower section 48 of the shell. The four corners of the upper section 47 of the shell extend into the shell 34, and the end face of the shell 34 changes from a square structure to a cross structure. This design ensures that the upper port of the mounting through hole will not be blocked or surrounded by the upper section of the shell, and this design facilitates installation. A gap is reserved between the lower section of the shell and the columnar plastic-sealed stator. The gap is used for heat dissipation. Two wire holes 50 are formed on the upper side wall of the shell 34, and waterproof power connectors 51 are provided in the two wire holes 50. Slots 52 are provided on both sides of the waterproof power connector 51. The two waterproof power connectors 51 pass through the wire holes 50 and extend into the shell and are fixed with the same plug-in sheet 53 in the shell. The plug-in sheet 53 is provided with two plug-in sheet grooves 54 corresponding to the two waterproof power connectors. The groove walls of the plug-in sheet grooves 54 are inserted into the corresponding slots 52 of the waterproof power connector. A sealing gasket 55 is provided between the waterproof power connector 51 and the shell 34.

[0045] Since the upper part of the shell adopts a cross-shaped structure, space is reserved for the installation of the waterproof power connector. The installation orientation of the waterproof power connector can be installed in a direction 90° perpendicular to the horizontal shaft, which solves the problem of limited direction of electrical connection of conventional motors and realizes all-round worry-free steering assembly. This design provides users with more installation space and convenience.

[0046] like Figure 8 , 9As shown in Figures 10 and 11, the DC three-phase stator coil 1 includes a circular iron core 12, an insulating sleeve 5 and a coil 6. The circular iron core 12 includes a circular sleeve 7, 6 winding posts 8 and 6 arc plates 9. The 6 winding posts 8 are radially distributed in the circular sleeve 7. One end of the winding post 8 is connected to the inner wall surface of the circular sleeve 7. The arc plate 9 is connected to the other end of the winding post 8. The 6 arc plates 9 enclose a circular cavity 10. There is a gap 11 between adjacent arc plates 9. The insulating sleeve 5 is used to wrap the 6 winding posts 8 and the inner wall surface of the circular sleeve 7. The coil 6 is wound on the surface of the insulating sleeve 5 on the winding post 8. The gap of the 6 arc plates reserves space for the winding process of the coil. The circular sleeve, the 6 winding posts and the 6 arc plates are integrally formed.

[0047] like Fig.12 , 13 As shown in 14, the insulating sleeve is composed of an upper insulating sleeve 13 and a lower insulating sleeve 14, the upper insulating sleeve 13 includes an upper inner liner ring sleeve 15, 6 upper U-shaped winding column sleeves 16 and an upper arc liner plate 17, the upper inner liner ring sleeve 15 is provided with 6 through holes 18 distributed along the circumferential direction, the 6 upper U-shaped winding column sleeves 16 are connected to the inner wall surface of the upper inner liner ring sleeve 15 and are respectively located at the 6 through holes 18, the through holes 18 correspond to and are connected to one side of the U-shaped cavity of the upper U-shaped winding column sleeve 16, the upper arc liner plate 17 is connected to the upper U-shaped winding column On the other side of the U-shaped cavity of the sleeve 16, the upper liner ring sleeve 15 is inserted into the upper port of the circular sleeve 7 of the circular iron core, and is closely attached to the upper section of the inner wall of the circular sleeve 7. The U-shaped winding column sleeve 16 is wrapped around the outer periphery of the upper section of the winding column 8, and the arc lining plate 17 is closely attached to the outer side surface of the upper section of the arc plate 9; the upper end of the upper arc lining plate 17 is connected to the upper side baffle plate 19 of the coil, and the inner side surface of the upper side baffle plate 19 of the coil is flush with the inner surface of the arc plate 9 of the circular iron core; the upper end of the upper half insulating sleeve 13 is provided with an upper side outer protective ring 20 of the coil. The upper side outer protective ring 20 of the coil is provided with lead wire passing grooves 21 at intervals.

[0048] like Fig.15 , 16 As shown, the lower semi-insulating sleeve 14 includes a lower inner liner ring sleeve 22, 6 lower U-shaped winding pole sleeves 23 and a lower arc-shaped lining plate 24. Six through holes 25 are distributed along the circumferential direction under the lower inner liner ring sleeve 22. The 6 lower U-shaped winding pole sleeves 23 are connected to the lower inner wall surface of the lower inner liner ring sleeve 22 and are respectively located at the 6 through holes 25. The through holes 25 correspond to and are connected to one side of the U-shaped cavity of the lower U-shaped winding pole sleeve 23. The lower arc-shaped lining plate 24 is connected to the other side of the U-shaped cavity of the lower U-shaped winding pole sleeve 23. The lower inner liner ring sleeve 22 is inserted into the lower port of the circular ring sleeve 7 of the circular iron core and is tightly attached to the lower section of the inner wall surface of the circular ring sleeve 7. The lower U-shaped winding pole sleeve 23 is wrapped around the outer periphery of the lower section of the winding pole 8, and the lower arc-shaped lining plate 24 is tightly attached to the outer side surface of the lower section of the arc plate 9.

[0049] The lower end of the lower half insulating sleeve 14 is provided with an outer protective ring 26 on the lower side of the coil. The lower end of the lower arc-shaped lining plate is connected to a baffle plate 27 on the lower side of the coil, and the inner side surface of the baffle plate 27 on the lower side of the coil is flush with the inner surface of the arc-shaped plate 9 of the circular iron core. Wiring grooves 28 are distributed on the outer side surface of the outer protective ring 26 on the lower side of the coil, and the wiring grooves are of a V-shaped structure. Six copper wire crossing grooves 29 are distributed at intervals on the outer protective ring 26 on the lower side of the coil, and the six copper wire crossing grooves 29 correspond to the six coils respectively. The coils facing each other are connected in series, and the groove depths of the two copper wire crossing grooves 29 corresponding to the coils facing each other are the same. The design of the same groove depth can make the notch correspond to the wiring groove. When the coils facing each other are connected in series, the copper wires drawn out are arranged in order along the wiring groove.

[0050] In addition, those skilled in the art may combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradiction. Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A condensate-proof circulating pump, comprising a motor, a pump casing and an impeller, wherein the impeller is arranged in the pump casing, and the rotor of the motor is connected to the impeller, characterized in that: The motor comprises a DC three-phase stator coil and a rotor. The DC three-phase stator coil and a temperature sensor are plastic-sealed in the same injection molded body. The temperature sensor is used to detect the temperature of the DC three-phase stator coil. The injection molded body has an electromagnetic drive cavity, and the rotor is arranged in the electromagnetic drive cavity. The motor further comprises a housing, a circuit board and a top cover, the upper end of the housing is open, the top cover is arranged at the upper end of the housing, the injection molding body is arranged in the housing, the lower end of the injection molding body extends out of the lower end of the housing, the lower end of the housing and the injection molding body are closed, a gap is reserved between the upper section of the housing and the injection molding body, and when the circuit board is installed at the upper end of the injection molding body in the housing, a plurality of components on the circuit board are arranged in the gap; The injection molded body is a cylindrical injection molded body, the length and width of the upper section of the shell are greater than the length and width of the lower section of the shell; the lower section of the shell is a square structure, and mounting through holes are provided at the four corners of the lower section of the shell; the upper section of the shell is a square structure, and the four corners of the upper section of the shell extend into the shell, and the end surface of the shell forms a cross structure; a plurality of supporting protrusions are provided on the inner wall of the shell, and the circuit board is placed flat on the supporting protrusions and fixed with screws; a gap is reserved between the lower section of the shell and the columnar plastic-sealed stator; the columnar plastic-sealed stator is integrally formed with the shell by injection molding; The DC three-phase stator coil comprises a circular iron core, an insulating sleeve and a coil. The circular iron core comprises an annular sleeve, 6 winding posts and 6 arc plates. The 6 winding posts are radially distributed in the annular sleeve. One end of the winding post is connected to the inner wall surface of the annular sleeve, and the arc plate is connected to the other end of the winding post. The 6 arc plates surround a circular cavity, and there is a gap between adjacent arc plates. The insulating sleeve is used to wrap the 6 winding posts and the inner wall surface of the annular sleeve, and the coil is wound on the surface of the insulating sleeve on the winding post; the annular sleeve, the 6 winding posts and the 6 arc plates are integrally formed.

2. The anti-condensate type circulation pump according to claim 1, characterized in that: The upper side wall of the shell has two wire holes, and waterproof power connectors are arranged in the two wire holes. Slots are arranged on both sides of the waterproof power connector. The two waterproof power connectors extend into the shell through the wire holes and are fixed with the same plug in the shell. The plug is provided with two plug slots corresponding to the two waterproof power connectors. The slot walls of the plug slots are inserted into the corresponding slots of the waterproof power connector. A sealing gasket is arranged between the waterproof power connector and the shell.

3. The anti-condensate type circulation pump according to claim 1, characterized in that: The insulating sleeve is formed by plugging an upper insulating sleeve and a lower insulating sleeve.

4. The anti-condensate type circulation pump according to claim 3, characterized in that: The upper insulating sleeve comprises an upper inner liner ring sleeve, 6 upper U-shaped winding pole sleeves and an upper arc-shaped lining plate. The upper inner liner ring sleeve is provided with 6 through holes distributed along the circumferential direction. The 6 upper U-shaped winding pole sleeves are connected to the inner wall surface of the upper inner liner ring sleeve and are respectively located at the 6 through holes. The through holes correspond to and are connected with one side of the U-shaped cavity of the upper U-shaped winding pole sleeve. The upper arc-shaped lining plate is connected to the other side of the U-shaped cavity of the upper U-shaped winding pole sleeve. The upper inner liner ring sleeve is inserted into the upper port of the circular ring sleeve of the circular iron core and is tightly attached to the upper section of the inner wall surface of the circular ring sleeve. The U-shaped winding pole sleeve is wrapped around the outer periphery of the upper section of the winding pole, and the arc-shaped lining plate is tightly attached to the outer side surface of the upper section of the arc-shaped plate. The lower semi-insulating sleeve includes a lower inner liner ring sleeve, 6 lower U-shaped winding pole sleeves and a lower arc-shaped lining plate. There are 6 through holes distributed along the circumferential direction under the lower inner liner ring sleeve. The 6 lower U-shaped winding pole sleeves are connected to the inner wall surface of the lower inner liner ring sleeve and are respectively located at the 6 through holes. The through holes correspond to and are connected to one side of the U-shaped cavity of the lower U-shaped winding pole sleeve. The lower arc-shaped lining plate is connected to the other side of the U-shaped cavity of the lower U-shaped winding pole sleeve. The lower inner liner ring sleeve is inserted into the lower port of the circular ring sleeve of the circular iron core and is tightly attached to the lower section of the inner wall surface of the circular ring sleeve. The lower U-shaped winding pole sleeve is wrapped around the outer periphery of the lower section of the winding pole, and the lower arc-shaped lining plate is tightly attached to the outer side surface of the lower section of the arc plate.

5. The anti-condensate type circulation pump according to claim 4, characterized in that: The upper end of the upper arc lining plate is connected to an upper baffle plate of the coil, and the inner side surface of the upper baffle plate of the coil is flush with the inner surface of the arc plate of the circular iron core; the lower end of the lower arc lining plate is connected to a lower baffle plate of the coil, and the inner side surface of the lower baffle plate of the coil is flush with the inner surface of the arc plate of the circular iron core.

6. The anti-condensate type circulation pump according to claim 5, characterized in that: The upper end of the upper insulating sleeve is provided with an upper outer protective ring of the coil, and the upper outer protective ring of the coil is provided with lead wire passing grooves at intervals; the lower end of the lower insulating sleeve is provided with a lower outer protective ring of the coil, and the outer side surface of the lower outer protective ring of the coil is provided with wiring grooves, and the lower outer protective ring of the coil is provided with 6 copper wire passing grooves at intervals, and the 6 copper wire passing grooves correspond to the 6 coils respectively, and the coils opposite to each other are connected in series, and the groove depths of the two copper wire passing grooves corresponding to the coils opposite to each other are the same, so that the groove bottom can correspond to the wiring groove.

7. The anti-condensate type circulation pump according to claim 6, characterized in that: The wiring groove is a V-shaped structure.

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