Stator structure, motor and air conditioner

Abstract

The invention provides a stator structure, a motor and an air conditioner, the stator structure comprises a stator, the stator is provided with a first end and a second end, the first end is a shaft output end of the stator, and the outer diameter of the stator is gradually increased along the direction from the first end to the second end. According to the air conditioner, the technical problem that in the prior art, water in the air conditioner can enter the motor along the waterproof cover through the surface of the motor along the motor cover closing position, and consequently the motor is damaged can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a stator structure, a motor and an air conditioner. Background Art

[0002] In the current industry, motors for cabinet-type indoor units of air conditioners generally use a vertically upward installation structure with the shaft extending in the direction of the shaft. During long-term use of the air conditioner, condensed water is prone to flow along the rotor shaft into the interior of the motor. At the same time, when the user cleans the fan blades of the cabinet-type indoor unit of the air conditioner, the cleaning water flows along the fan blades to the rotor shaft, and then flows along the rotor shaft into the interior of the motor, causing the bearings to rust and the motor's electronic components to malfunction, which in turn leads to abnormal conditions such as loud noises during operation of the air conditioner and inability to operate, thereby reducing the service life of the air conditioner.

[0003] In order to solve the problem of water ingress during the use and cleaning of the motor for the indoor unit of the cabinet air conditioner, most manufacturers in the industry adopt the solution of adding a waterproof cover to the outer rotor shaft end. This solution will solve the problem of clean water and condensed water entering the motor along the rotor shaft, but at the same time it will cause water to enter the inside of the motor along the waterproof cover through the motor surface along the motor cover and the outlet, and it cannot completely solve the problem of water ingress in the motor installed vertically with the shaft extending in the upward direction.

[0004] Since water in the air conditioner in the prior art can enter the inside of the motor along the waterproof cover through the motor surface and along the motor cover, causing technical problems such as motor damage, the present invention studies and designs a stator structure, a motor, and an air conditioner. Summary of the invention

[0005] Therefore, the present invention provides a stator structure, a motor, and an air conditioner, which can solve the technical problem in the prior art that water in the air conditioner can enter the interior of the motor along the waterproof cover through the motor surface and along the motor cover, causing damage to the motor.

[0006] In order to solve the above problems, the present invention provides a stator structure, including: a stator, wherein the stator has a first end and a second end, the first end is the shaft outlet end of the stator, and the outer diameter of the stator gradually increases along the direction from the first end to the second end.

[0007] In some embodiments, an end cap is disposed on the second end, and an outer diameter of the end cap is smaller than an outer diameter of the second end.

[0008] In some embodiments, a first groove is provided on the outer peripheral wall of the stator, the first groove extends along the circumference of the stator, and one side of the first groove passes through the second end, and a first protrusion is provided on the other side of the first groove.

[0009] In some embodiments, a distance between a bottom of the first groove and the stator is greater than an outer diameter of the end cover.

[0010] In some embodiments, a wire outlet clamp is disposed at the bottom of the first groove, and the outer diameter of the wire outlet clamp is smaller than the outer diameter of the second end.

[0011] In some embodiments, the first protrusion is arranged close to the outer peripheral wall of the stator, the wire outlet clamp is located between the first protrusion and the groove bottom of the first groove, and there is a gap between the first protrusion and the wire outlet clamp.

[0012] In some embodiments, a second groove is provided on a side of the outlet clamp facing away from the groove bottom of the first groove, and the groove bottom of the second groove has an outlet hole.

[0013] The present invention also provides a motor, comprising the above-mentioned stator structure.

[0014] In some embodiments, the motor includes a rotating shaft extending out of the first end, a vibration damper is disposed on the first end, a cover is disposed on the portion of the rotating shaft extending out of the stator, the vibration dampers are arranged in sequence along the direction from the second end to the first end, and the opening end of the cover faces the vibration damper.

[0015] In some embodiments, a second protrusion is provided on the vibration damping member, and the second protrusion at least partially extends into the cover body. There is a minimum distance ≥a between the second protrusion and the rotating shaft, and there is a minimum distance ≥b between the second protrusion and the inner wall of the cover body, wherein a ≥1.5 mm, and b ≥1.5 mm.

[0016] In some embodiments, a plurality of guide holes are provided on the vibration damper, one opening of the guide holes faces the cover body, one opening of the guide holes is located on the outer peripheral wall of the vibration damper, and one opening of the guide holes is arranged opposite to the outer wall of the opening end of the cover body.

[0017] The present invention also provides an air conditioner, comprising the above-mentioned motor.

[0018] The stator structure, motor and air conditioner provided by the present invention have the following beneficial effects:

[0019] The first end is the shaft outlet end of the stator, and the outer diameter of the stator gradually increases along the direction from the first end to the second end, so that the outer surface of the stator forms a certain slope in the axial direction, which is convenient for guiding the water flow, and can effectively drain and block various unnecessary water droplets and water flows such as clean water and condensed water generated during the use of the air conditioner, thereby solving the problem of water ingress into the motor of the cabinet indoor unit of the air conditioner in the industry, ensuring that the motor runs more stably and reliably, and extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] Figure 1 The structure of the stator structure of the present invention is schematically shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the stator structure of the present invention is schematically shown in FIG. Figure 2 ;

[0023] Figure 3 yes Figure 2 A partial enlarged view of

[0024] Figure 4 It is a structural schematic diagram of a wire outlet clamp in a stator structure of the present invention;

[0025] Figure 5 The structure of the stator structure of the present invention is schematically shown in FIG. Figure 3 ;

[0026] Figure 6 It is a structural schematic diagram of the vibration damping component in the stator structure of the present invention;.

[0027] The accompanying drawings are marked as follows:

[0028] 1. stator; 2. first end; 3. second end; 4. end cover; 5. wire outlet clamp; 6. first protrusion; 7. second groove; 8. second protrusion; 9. cover body; 10. vibration damping member; 11. guide hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0031] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0032] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0033] See also Figure 1-6 As shown, according to an embodiment of the present invention, a stator structure is provided, including: a stator 1, wherein the stator 1 has a first end 2 and a second end 3, wherein the first end 2 is the shaft outlet end of the stator 1, and the outer diameter of the stator 1 gradually increases along the direction from the first end 2 to the second end 3. In this technical solution, the first end 2 is the shaft outlet end of the stator 1, and the outer diameter of the stator 1 gradually increases along the direction from the first end 2 to the second end 3, so that the outer surface of the stator forms a certain slope in the axial direction, which is convenient for guiding the water flow, and effectively drains and blocks various types of unnecessary water droplets and water flows such as clean water and condensed water generated during the use of the air conditioner, thereby solving the problem of water ingress into the motor of the cabinet-type indoor unit of the air conditioner in the industry, ensuring that the motor runs more stably and reliably, and extending the service life of the motor. The shaft outlet end of the stator 1 is the end face of the rotating shaft extending out of the stator 1.

[0034] In the stator structure of the present invention, the stator 1 is an injection molded stator, and the outer circumference of the stator is set to be trumpet-shaped, the shaft end is a small diameter, and the non-shaft end is a large diameter, that is, the outer diameter of the shaft end is A<Outer diameter of non-exiting shaft end B. The outer surface of the stator forms a certain slope in the axial direction, which is conducive to the drainage of water flow.

[0035] In some embodiments, an end cover 4 is provided on the second end 3, and the outer diameter of the end cover 4 is smaller than the outer diameter of the second end 3. In this technical solution, the outer diameter of the end cover 4 is smaller than the outer diameter of the second end 3, so that a step-like structure is formed between the end cover 4 and the second end, thereby preventing the water flow on the outer peripheral wall of the stator 1 from flowing into the motor from the connection between the end cover 4 and the second end 3.

[0036] In the stator structure of the present invention, the outer circumference of the stator and the outer circumference of the end cover at the place where the stator 1 and the end cover 4 are matched form a position difference in the radial direction and the axial direction, that is, the outer diameter of the end cover C<Outer diameter of non-exiting shaft end B. Under the action of gravity, the water flows vertically downward, avoiding the water flow along the stator surface from contacting the joint cover, and preventing the water flow from directly contacting the joint between the end cover and the stator.

[0037] In some embodiments, a first groove is provided on the outer peripheral wall of the stator 1, and the first groove extends along the circumference of the stator 1, and one side of the first groove penetrates the second end 3, and the other side of the first groove is provided with a first protrusion 6. In this technical solution, the water flow guided downward by the outer peripheral wall of the stator 1 is further diverted by the first protrusion 6, so that the water flow drips along the end of the first protrusion 6 facing away from the second end 3, and the water flow on the outer peripheral wall of the stator 1 is prevented from flowing to the end surface of the second end 3 and flowing into the motor from the connection between the end cover 4 and the second end 3.

[0038] In some embodiments, the distance between the bottom of the first groove and the stator 1 is greater than the outer diameter of the end cover 4. In this technical solution, the distance between the bottom of the first groove and the stator 1 is greater than the outer diameter of the end cover 4. A multi-step structure is formed between the other end face 3 of the first groove and the end cover 4 to prevent water flow on the outer peripheral wall of the stator 1 from flowing into the motor from the connection between the end cover 4 and the second end 3.

[0039] In some embodiments, a wire outlet clamp 5 is provided at the bottom of the first groove, and the outer diameter of the wire outlet clamp 5 is smaller than the outer diameter of the second end 3. In this technical solution, the lead wire of the stator winding is led out through the wire outlet clamp 5, and the outer diameter of the wire outlet clamp 5 is smaller than the outer diameter of the second end 3. Since the first protrusion 6 is provided on the other side of a groove, the water flow on the outer peripheral wall of the stator is prevented from contacting the wire outlet clamp 5 to cause a circuit fault.

[0040] In some embodiments, the first protrusion 6 is arranged close to the outer peripheral wall of the stator 1, the outlet clamp 5 is located between the first protrusion 6 and the bottom of the first groove, and there is a gap between the first protrusion 6 and the outlet clamp 5. In this technical solution, the first protrusion 6 is arranged close to the outer peripheral wall of the stator 1, the outlet clamp 5 is located between the first protrusion 6 and the bottom of the first groove, and there is a gap between the first protrusion 6 and the outlet clamp 5. This ensures that the water flowing down from the first protrusion 6 will not contact the outlet clamp 5, causing circuit failure.

[0041] In some embodiments, the outlet clamp 5 is provided with a second groove 7 on the side facing away from the bottom of the first groove, and the bottom of the second groove 7 has an outlet hole. In this technical solution, the second groove 7 forms a groove space, and after the upper and lower outlet clamps are matched, a certain groove space is provided between the lead wires to form a lead wire protection groove to prevent water from flowing into the motor along the lead wires. The lead wires should be well matched with the outlet clamps, and the lead wires should not be loose.

[0042] In the stator structure of the present invention, the stator 1 is provided with a first groove at the outlet, and the first groove cooperates with the outlet clamp 5. The outer circumference diameter of the outlet clamp 5 should be smaller than the outer circumference of the stator at the cooperation position, that is, the outer diameter of the outlet clamp 5 is E<Injection molded stator outer diameter D, in order to avoid direct contact between the water flow and the wire clamp, and a first boss 6 is provided on the wire clamp mating surface of the injection-molded stator to prevent water from flowing back and contacting the wire clamp.

[0043] The present invention also provides a motor, comprising the above-mentioned stator structure.

[0044] In some embodiments, the motor includes a rotating shaft, the rotating shaft extends out of the first end 2, a vibration damper 10 is provided on the first end 2, a cover 9 is provided on the portion of the rotating shaft extending out of the stator 1, and the vibration dampers 10 are arranged in sequence along the direction from the second end 3 toward the first end 2, and the open end of the cover 9 faces the vibration damper 10. In this technical solution, the water flow from the top of the motor is guided by the cover 9, so that the water flows from the cover 9 to the outer peripheral wall of the stator 1, and the outer surface of the stator 1 forms a certain slope in the axial direction, which is convenient for guiding the water flow, and effectively drains and blocks various types of unnecessary water droplets and water flow such as clean water and condensed water generated during the use of the air conditioner, solves the problem of water ingress into the motor of the cabinet-type indoor unit of the air conditioner in the industry, ensures that the motor runs more stably and reliably, and prolongs the service life of the motor. The vibration damper 10 is a shock-absorbing rubber ring.

[0045] In some embodiments, the vibration damper 10 is provided with a second protrusion 8, the second protrusion 8 at least partially extends into the cover 9, the second protrusion 8 and the rotating shaft have a minimum spacing ≥ a, the second protrusion 8 and the inner wall of the cover 9 have a minimum spacing ≥ b, a ≥ 1.5 mm, and b ≥ 1.5 mm. In this technical solution, in order to further improve the waterproof ability of the motor, the vibration damper 10 is provided with a second protrusion 8, and the second protrusion 8 cooperates with the cover 9 to ensure that the second protrusion 8 and the cover 9 overlap, ensuring that water does not flow into the motor along the rotor shaft.

[0046] The single-side spacing between the inner circle of the cover body 9 and the outer circle of the second protrusion 8 is ≥a, and the single-side spacing between the inner circle of the second protrusion 8 and the rotating shaft is ≥b, a and b are ≥1.5mm, to ensure that the inner circle of the boss will not rub against the rotor shaft, and the inner circle of the waterproof cover will not rub against the outer circle of the boss during the operation of the motor.

[0047] In some embodiments, the vibration damper 10 is provided with a plurality of guide holes 11, one opening of the guide hole 11 faces the cover 9, one opening of the guide hole 11 is located on the outer peripheral wall of the vibration damper 10, and one opening of the guide hole 11 is arranged opposite to the outer wall of the opening end of the cover 9. Figure 5 As shown, the guide hole 11 is arranged in an L shape, and one opening of the guide hole 11 is arranged opposite to the outer wall of the opening end of the cover body 9. A part of the water on the cover body 9 will be thrown out of the cover body 9 under the action of the centrifugal force of the rotating shaft, so that the water flow of the other part of the outer wall of the cover body 9 can quickly flow into the guide hole 11, and the water is transported to the end surface of the first end 2 of the stator 1 through the guide hole 11, so as to prevent water from flowing into the motor. The vibration damping member 10 adopts a shock-absorbing rubber ring. In order to ensure the shock-absorbing ability of the shock-absorbing rubber ring, the water-conducting through holes should not be too many, and an even number of water-conducting through holes should be evenly distributed.

[0048] In the motor of the present invention, the outlet clamp 5 and the outer circle of the injection-molded stator 1 should be designed to be tightly fitted, which further improves the waterproof ability and stability of the structure.

[0049] The specific implementation steps are:

[0050] Step 1: Injection mold the upper and lower wire clamps, shock-absorbing rubber rings, and waterproof covers through an injection mold;

[0051] Step 2: Inject the wound stator into an injection molded stator through an injection mold;

[0052] Step 3: Assemble the upper and lower wire clamps, injection molded stator and end cover into one piece by using a servo press;

[0053] Step 4: Assemble the shock-absorbing rubber ring and the injection-molded stator into one;

[0054] Step 5: Assemble the waterproof cover into the corresponding groove of the rotor shaft.

[0055] The motor of the present invention effectively solves the problem of water ingress into the motor when the shaft is installed vertically upward through the combined design of the stator, the end cover and the outlet clamp; optimizes the matching structure and improves the protection capability of the motor.

[0056] The motor of the present invention, through the stator and end cover matching structure, is compatible with the protection of water-prone locations such as the rotor shaft, the cover closing location, and the line outlet location. Through the matching of the waterproof cover, the shock-absorbing rubber ring, the stator, and the end cover, various types of unnecessary water droplets and water flows such as clean water and condensed water generated during the use of the air conditioner can be effectively drained and blocked, thereby solving the problem of water ingress into the motor of the cabinet-type indoor unit of the air conditioner in the industry, ensuring that the motor runs more stably and reliably, and extending the service life of the motor.

[0057] The motor of the present invention has a stator composed of an injection-molded stator and an end cover. The stator is an injection-molded stator, and the outer circumference of the stator is set to be trumpet-shaped, the shaft end is a small diameter, the non-shaft end is a large diameter, and the outer surface of the stator forms a certain slope in the axial direction; the outer circumference of the stator and the outer circumference of the end cover at the matching point of the stator and the end cover form a position difference in the radial direction and the axial direction; the stator is provided with a first groove at the outlet of the wire, which is matched with the outlet clamp, and the outer circumference diameter of the outlet clamp should be smaller than the outer circumference of the stator at the matching point to prevent water from flowing to the matching point between the outlet clamp and the stator; after the outlet clamp is matched, a second groove is provided between the lead wires to form a certain groove space to form a lead wire protection The protective groove prevents water from flowing into the motor along the lead wire; in order to further improve the waterproof ability of the motor, the vibration damping part is provided with a second protrusion and evenly distributed water-conducting through holes, and the second protrusion cooperates with the cover body; the single-side spacing between the inner circle of the cover body and the outer circle of the second protrusion is ≥a, and the single-side spacing between the inner circle of the second protrusion and the rotor shaft is ≥b, and a and b are preferably ≥1.5mm to ensure that there is no friction between the rotor shaft and the cover body during the operation of the motor; in order to ensure the shock-absorbing ability of the shock-absorbing rubber ring, there should not be too many water-conducting through holes, and an even number of water-conducting through holes should be evenly distributed; further, the wire outlet clamp and the outer circle of the injection-molded stator should be designed to be a tight fit, which further improves the waterproof ability and stability of the structure.

[0058] The present invention also provides an air conditioner, comprising the above-mentioned motor.

[0059] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A stator structure, characterized in that: include: A stator (1), the stator (1) having a first end (2) and a second end (3), the first end (2) being an axial end of the stator (1), and the outer diameter of the stator (1) gradually increasing along the direction from the first end (2) to the second end (3).

2. The stator structure according to claim 1, characterized in that: An end cover (4) is provided on the second end (3), and the outer diameter of the end cover (4) is smaller than the outer diameter of the second end (3).

3. The stator structure according to claim 1, characterized in that: A first groove is provided on the outer peripheral wall of the stator (1), the first groove extends along the circumference of the stator (1), one side of the first groove passes through the second end (3), and a first protrusion (6) is provided on the other side of the first groove.

4. The stator structure according to claim 3, characterized in that: The distance between the bottom of the first groove and the stator (1) is greater than the outer diameter of the end cover (4).

5. The stator structure according to claim 3, characterized in that: A wire outlet clamp (5) is provided at the bottom of the first groove, and the outer diameter of the wire outlet clamp (5) is smaller than the outer diameter of the second end (3).

6. The stator structure according to claim 5, characterized in that: The first protrusion (6) is arranged close to the outer peripheral wall of the stator (1), the wire outlet clamp (5) is located between the first protrusion (6) and the bottom of the first groove, and there is a gap between the first protrusion (6) and the wire outlet clamp (5).

7. The stator structure according to claim 5, characterized in that: A second groove (7) is provided on the side of the wire outlet clamp (5) facing away from the groove bottom of the first groove, and the groove bottom of the second groove (7) has a wire outlet hole.

8. A motor, characterized in that: The invention comprises the stator structure according to any one of claims 1 to 7.

9. The motor according to claim 8, characterized in that: The motor comprises a rotating shaft, the rotating shaft protruding from the first end (2), a vibration damping member (10) being arranged on the first end (2), a cover body (9) being arranged on the portion of the rotating shaft protruding from the stator (1), the vibration damping members (10) being arranged in sequence along the direction from the second end (3) toward the first end (2), and an opening end of the cover body (9) facing the vibration damping member (10).

10. The motor according to claim 9, characterized in that: The vibration damping member (10) is provided with a second protrusion (8), the second protrusion (8) at least partially extends into the cover body (9), the second protrusion (8) and the rotating shaft have a minimum spacing ≥ a, and the second protrusion (8) and the inner wall of the cover body (9) have a minimum spacing ≥ b, wherein a ≥ 1.5 mm, and b ≥ 1.5 mm.

11. The motor according to claim 9, characterized in that: A plurality of guide holes (11) are provided on the vibration damping member (10), one opening of the guide hole (11) faces the cover body (9), one opening of the guide hole (11) is located on the outer peripheral wall of the vibration damping member (10), and one opening of the guide hole (11) is arranged opposite to the outer wall of the opening end of the cover body (9).

12. An air conditioner, characterized in that: A motor comprising the motor according to any one of claims 8 to 11.

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