Brushless condensation fan

Abstract

A brushless condensation fan comprises a machine shell and a rear cover which are connected together in a matched mode, a stator component, a rotor component and a controller are arranged in the machine shell, and the controller is fixed in the rear cover. The stator component is arranged in the machine shell and comprises a stator iron core, and coil winding end portions which are evenly distributed on the circumference are arranged in the stator iron core. The upper end face, the lower end face and the inner side face of the stator iron core are all provided with iron core plastic coatings, the upper end face, the lower end face and the outer side face of the coil winding end portion are all provided with winding plastic coatings, and the iron core plastic coatings and the winding plastic coatings are all made of insulating material integrated plastic coatings. Three protrusions are arranged on the upper end face of the iron core plastic coating, and a wire hanging terminal inserting hole is formed in each protrusion. The fan can rotate forwards and reversely at the same time, and the heat dissipation and cleaning requirements of an air conditioner condenser are met; and meanwhile, integrated plastic coating of the motor stator iron core can be realized, the assembly procedures are reduced, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of passenger car air conditioners, and in particular relates to a brushless condensing fan. Background Art

[0002] Most domestic and foreign bus air conditioning systems use brushed motor fans, but with the introduction of the concept of green air conditioning, bus air conditioning will inevitably undergo a technological transformation. Brushless motors have advantages over traditional brushed motors, such as energy saving, environmental protection, and low noise. Their technology is becoming increasingly mature, and their costs are greatly reduced. They are replacing brushed fans in large quantities, and the market prospects are huge.

[0003] As a key component in the bus air conditioning condenser, the brushless condensing fan draws external wind into the air conditioning condenser, lowers the temperature of the condensing core, and ensures the cooling effect of the air conditioning. When the air conditioning works for a long time, dust will accumulate on the surface of the condensing core, and will absorb fluff such as catkins, causing the condensing core to become dirty and clogged, affecting the heat dissipation of the core, and thus causing the air conditioning cooling effect to deteriorate. In severe cases, the air conditioning system will stop working due to excessive pressure, giving customers a bad cooling experience. The existing technology has the following defects:

[0004] 1. The plastic coating on the stator core of the existing brushless motor adopts the plastic coating form of upper and lower molds. During production, the plastic coating needs to be loaded into the upper and lower end surfaces of the stator core respectively, which has low production efficiency.

[0005] 2. The existing brushless condensing fan only has the forward rotation function, which can meet the heat dissipation requirements of the air conditioner, but has no reverse rotation function, which cannot meet the needs of dust blowing and fluff removal in the air conditioner, and it is urgent to add the reverse rotation function;

[0006] 3. The stator needs to install the stator insulation plastic package on the upper and lower end surfaces of the stator core before winding. When winding on one radial side of the stator core, the upper and lower plastic packages on the other side and the stator core will produce relative displacement, the fit is not good, and it is easy to cause damage to the plastic package, resulting in large production waste. Utility Model Content

[0007] The technical problem to be solved by the utility model is: to provide a novel brushless condensing fan in view of the defects of the prior art.

[0008] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0009] A brushless condensing fan comprises a casing and a rear cover which are matched and connected together, wherein a stator component, a rotor component and a controller are arranged in the casing, wherein the controller is fixed in the rear cover;

[0010] The stator component is in the housing, and the stator component includes a stator core, and the stator core is provided with coil winding ends evenly distributed around the circumference; the upper end surface, lower end surface and inner side surface of the stator core are all provided with core plastic coating, and the upper end surface, lower end surface and outer side surface of the coil winding end are all provided with winding plastic coating, and the core plastic coating and winding plastic coating are both integrated plastic coatings of insulating materials;

[0011] Three protrusions are arranged on the upper end surface of the iron core covered with plastic, and a wire hanging terminal insertion hole is arranged in each protrusion.

[0012] Each coil winding end is T-shaped as a whole, and the coil winding end includes a winding part and an induction part, wherein the winding part is columnar, a coil is wound on the winding part, one end of the winding part is fixedly connected to the inner side surface of the stator core, and the other end is connected to the induction part, the width of the induction part is greater than the width of the winding part, and a protrusion is provided on the top of the induction part.

[0013] The lower end surface of the plastic-coated iron core is provided with a motor enameled wire transition winding stop column.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model can realize that the fan has both forward and reverse functions, meeting the heat dissipation and cleaning requirements of the air-conditioning condenser; at the same time, it can realize the integrated plastic packaging of the motor stator core, reduce the assembly process and improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the motor structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the stator component of the utility model. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0019] like Figure 1 As shown, a brushless condensing fan comprises a casing 1 and a back cover 5 which are matched and connected together, a stator component 2, a rotor component 3 and a controller 4 are arranged in the casing 1, wherein the controller 4 is fixed in the back cover 5 by screws.

[0020] The stator component 2 is in the housing 1, and the stator component 2 includes a stator core 21, and the stator core 21 is provided with coil winding ends 23 evenly distributed around the circumference, and there are 12 coil winding ends 23 in total, which can also be arranged as needed. Each coil winding end 23 is T-shaped as a whole, and the coil winding end 23 includes a winding portion 231 and an induction portion 232, wherein the winding portion 231 is columnar, and a coil is wound on the winding portion 231, one end of the winding portion 231 is fixedly connected to the inner side surface of the stator core 21, and the other end is connected to the induction portion 232, the width of the induction portion 232 is greater than the width of the winding portion 231, and a protrusion 233 is provided on the top of the induction portion 232, and the protrusion 233 prevents the enameled wire from radially exceeding the core surface after the stator component is wound.

[0021] The upper end face, lower end face and inner side face of the stator core 21 are all provided with a core coating 22, and the upper end face, lower end face and outer side face of the coil winding end 23 are all provided with a winding coating 24. The above-mentioned core coating 22 and winding coating 24 are both integrated coatings of insulating materials.

[0022] Three protrusions are arranged on the upper end surface of the core plastic coating 22, and a wire terminal insertion hole 26 is arranged in each protrusion, thereby forming a three-phase wire terminal insertion hole.

[0023] The lower end surface of the iron core plastic coating 22 is provided with a motor enameled wire transition winding stop column 25.

[0024] When working, the controller 4 is connected to the three-phase line of the stator component 2, and the rotor component is provided with magnetic poles. The controller 4 controls the three-phase electricity in the stator component 2 to form a magnetic field and the magnetic pole magnetic field of the rotor component 3, driving the rotor component 3 to rotate forward and reverse. In this way, the utility model can realize the forward and reverse rotation of the fan, which can meet the heat dissipation and cleaning requirements of the air conditioner condenser. And reduce the motor production process and plastic packaging damage.

[0025] In the utility model, the stator core adopts integrated plastic coating, and the stator core and the insulating material are processed as a whole. The plastic coating and the stator core have a high degree of fit, and it is not easy to cause plastic coating damage, thus avoiding production waste, omitting the plastic coating assembly process, and improving production efficiency.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A brushless condensing fan, characterized in that: It comprises a casing (1) and a rear cover (5) which are connected together, wherein a stator component (2), a rotor component (3) and a controller (4) are arranged in the casing (1), wherein the controller (4) is fixed in the rear cover (5); The stator component (2) is in the housing (1), and the stator component (2) comprises a stator core (21), and coil winding ends (23) are evenly distributed around the circumference of the stator core (21); the upper end surface, the lower end surface and the inner side surface of the stator core (21) are all provided with a core plastic coating (22), and the upper end surface, the lower end surface and the outer side surface of the coil winding end (23) are all provided with a winding plastic coating (24), and the core plastic coating (22) and the winding plastic coating (24) are both integrated with insulating materials; Three protrusions are arranged on the upper end surface of the iron core plastic coating (22), and a wire hanging terminal insertion hole (26) is arranged in each protrusion.

2. A brushless condensing fan according to claim 1, characterized in that: Each coil winding end portion (23) is T-shaped as a whole, and the coil winding end portion (23) comprises a winding portion (231) and an induction portion (232), wherein the winding portion (231) is columnar, a coil is wound on the winding portion (231), one end of the winding portion (231) is fixedly connected to the inner side surface of the stator core (21), and the other end is connected to the induction portion (232), the width of the induction portion (232) is greater than the width of the winding portion (231), and a protrusion (233) is provided at the top of the induction portion (232).

3. A brushless condensing fan according to claim 1, characterized in that: The lower end surface of the iron core plastic coating (22) is provided with a motor enameled wire transition winding stop column (25).

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