Novel stator core for compressor variable frequency motor

Abstract

The utility model discloses a novel stator core for a compressor variable frequency motor, which comprises a stator core body, the stator core body is formed by laminating a plurality of stator punching sheets A and a plurality of stator punching sheets B, the center of each stator punching sheet A is provided with a through hole for installing a motor rotor, and a plurality of stator teeth protrude towards the through hole in the circumferential direction of each stator punching sheet A; the stator teeth are distributed at equal intervals, stator grooves are formed between every two adjacent stator teeth, notches are formed in the ends, facing the through holes, of the stator grooves, the number of the stator grooves is twelve, and the included angle between the centers of every two adjacent stator grooves is 30 degrees. According to the utility model, through two kinds of stator slots of the stator punching sheet A and the stator punching sheet B, large stator slots are used at two ends of the combined stator core, and small stator slots are used in the middle, so that a plastic bracket of the stator can sink into the large stator slots at two ends, thereby reducing copper consumption, reducing copper consumption of the motor, improving stability of the motor, and improving overall efficiency of the motor; and the service life of the motor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to stator core technical field, especially be related to a new type compressor variable frequency motor with stator core. BACKGROUND

[0002] With the development of market, the air conditioner compressor motor gradually improves the requirement of high efficiency and low consumption, and the twelve slot variable frequency motor will replace the development of nine slot variable frequency motor to a great extent. Therefore, we have to consider designing a new variable frequency sheet type motor to meet the needs of the social market in the future. From the perspective of motor design, compared with the original nine slot motor, the twelve slot motor can withstand higher load, and at the same time, under high load, the twelve slot motor is more efficient, and the noise and vibration generated during operation are lower. The market demand has generally tended to the development of twelve slot motor, and in response to the policy goal of energy saving and consumption reduction called by the state, in order to seize the market opportunity, the existing part of the motor is optimized and upgraded to meet the market demand in the future. We provide a new type compressor variable frequency motor with stator core. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a new type compressor variable frequency motor with stator core, which solves the existing problems.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical scheme:

[0005] The utility model is a new type compressor variable frequency motor with stator core, which comprises a stator core body, the stator core body is formed by the common lamination of a plurality of stator punching sheets A and stator punching sheets B, a through hole for installing a motor rotor is arranged at the center of the stator punching sheet A, a plurality of stator teeth are protruded from the through hole in the circumferential direction of the stator punching sheet A, the stator teeth are distributed at equal intervals, stator slots are formed between every two adjacent stator teeth, a slot opening is arranged at one end of the stator slot facing the through hole, the stator slot is provided with twelve, and the center angle of the slot of two adjacent stator slots is 30 DEG.

[0006] In one of the embodiments, the stator core body is formed by the common lamination of a plurality of stator punching sheets A and stator punching sheets B, and the winding of the stator core body adopts star connection.

[0007] In one of the embodiments, in the stator punching sheet A, the diameter of the through hole, the slot area of the total stator slot, the spacing between the adjacent stator slots and the slot opening width are φ58.9mm, 1919.4mm, 6.9mm and 2.8mm respectively. 2

[0008] ​In one of the embodiments, in the stator lamination B, the diameter of the through hole: the slot area of the total stator slot: the spacing between adjacent stator slots: the slot opening width is φ58.9mm: 2384.7mm 2 : 5.7mm: 2.8mm.

[0009] In one of the embodiments, the stator lamination A is arranged symmetrically about the slot opening center line of the stator slot; when the stator core body height is 30mm, the number of stator lamination A: the number of stator lamination B is 43:7.

[0010] In one of the embodiments, the stator lamination A is provided with a buckle slot in the circumferential direction, the stator lamination A is provided with a heat dissipation groove, and the stator lamination A is provided with a support hole for mounting a plastic support.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses a kind of stator cores, comprising stator lamination A and stator lamination B, stator lamination A and stator lamination B are arranged symmetrically about the slot opening center line of the stator slot, and the stator lamination A is provided with the through hole in the circumferential direction.

[0013] The utility model has the advantages of simple structure, convenient processing and low cost.

[0014] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0016] Figure 1 It is a kind of new compressor variable frequency motor whole structure diagram of stator core;

[0017] Figure 2 It is Figure 1 A-A section view;

[0018] Figure 3 It is the structure diagram of stator lamination A in the utility model.

[0019] The components represented by the numbers in the drawings are listed as follows:

[0020] 1, stator core body; 2, through hole; 3, stator tooth; 4, stator slot; 5, slot opening; 6, buckle slot; 7, heat dissipation groove; 8, bracket hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] In the description of the present application, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0023] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] Please refer to Figures 1-3 As shown in the drawings, the present application is a kind of novel stator core for compressor variable frequency motor, including stator core body 1, stator core body 1 is formed by the common lamination of a plurality of stator punching A and stator punching B, the center of stator punching A is provided with the through hole 2 of installing motor rotor, stator punching A is convex in the circumferential direction to the through hole 2 a plurality of stator teeth 3, stator teeth 3 are equidistantly distributed, form stator slot 4 between every two adjacent stator teeth 3, the end of stator slot 4 towards through hole 2 is provided with slot opening 5, stator slot 4 is provided with twelve, the slot center angle of the adjacent two stator slots 4 is 30 °.

[0025] Further, a plurality of stator punching A and stator punching B are laminated to form stator core body 1, and the winding of stator core body 1 adopts star connection.

[0026] Further, in the stator lamination A, the diameter of the through hole 2: the slot area of the total stator slot 4: the spacing between adjacent stator slots 4: the width of the slot opening 5 is φ58.9mm: 1919.4mm 2 : 6.9mm: 2.8mm.

[0027] Further, in the stator lamination B, the diameter of the through hole 2: the slot area of the total stator slot 4: the spacing between adjacent stator slots 4: the width of the slot opening 5 is φ58.9mm: 2384.7mm 2 : 5.7mm: 2.8mm.

[0028] Further, the stator lamination A is arranged symmetrically with the center line of the slot opening 5 of the stator slot 4 as the axis; when the height of the stator core body 1 is 30mm, the number of the stator lamination A: the number of the stator lamination B is 43:7.

[0029] Further, the stator lamination A is provided with a buckle slot 6 in the circumferential direction, the stator lamination A is provided with a heat dissipation groove 7, and the stator lamination A is provided with a support hole 8 for mounting a plastic support.

[0030] It needs to be further explained that compared with the original nine-slot motor, the twelve-slot motor can bear higher load, and in the case of high load, the twelve-slot motor is more efficient, and the noise and vibration generated during operation are lower. At the same time, two sizes of stator slots are designed, and the combined stator core uses large stator slots at both ends and small stator slots in the middle, so that the plastic support of the stator can sink into the large stator slots at both ends, thereby reducing the amount of copper, reducing the copper consumption of the motor, improving the stability of the motor, improving the overall efficiency of the motor, reducing the heat generation of the motor, and prolonging the service life of the motor.

[0031] In the description of the present specification, the description referring to the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the specification. The specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A novel stator core for a compressor variable frequency motor, comprising a stator core body (1), wherein the stator core body (1) is formed by stacking a plurality of stator laminations A and stator laminations B, characterized in that: The stator lamination A has a through hole (2) for mounting the motor rotor at its center. Several stator teeth (3) protrude from the circumference of the stator lamination A towards the through hole (2). The stator teeth (3) are evenly spaced, and stator slots (4) are formed between pairs of adjacent stator teeth (3). The end of the stator slot (4) facing the through hole (2) has a slot opening (5). There are twelve stator slots (4), and the included angle between the centers of two adjacent stator slots (4) is 30°. The stator laminations at both ends of the stator core body (1) are stator laminations A, and the stator lamination in the middle is stator lamination B. The total area of ​​the stator slots (4) of stator lamination A is 1919.4 mm². 2 The spacing between adjacent stator slots (4) is 6.9 mm; the total area of ​​the stator slots (4) of stator lamination B is 2384.7 mm². 2 The spacing between adjacent stator slots (4) is 5.7 mm.

2. The stator core for a novel compressor variable frequency motor according to claim 1, characterized in that, The stator core body (1) is wound in a star configuration.

3. The stator core for a novel compressor variable frequency motor according to claim 1, characterized in that, The stator lamination A is symmetrically arranged with the center line of the slot (5) of the stator slot (4) as the axis; when the height of the stator core body (1) is 30mm, the ratio of the number of stator lamination A to the number of stator lamination B is 43:

7.

4. The stator core for a novel compressor variable frequency motor according to claim 1, characterized in that, The stator lamination A has a snap-fit ​​groove (6) in the circumferential direction, a heat dissipation groove (7) on the stator lamination A, and a bracket hole (8) for mounting a plastic bracket on the stator lamination A.

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