Motor, compressor and air conditioner

Abstract

The utility model provides a motor, a compressor and an air conditioner, the motor comprises a stator and a terminal, the stator comprises a stator core and a winding, an extension wire is led out from the winding, and the extension wire comprises a first extension wire and a second extension wire; the motor further comprises a first insulation framework and a second insulation framework, the first insulation framework is located at the axial lower end of the stator, the second insulation framework is located at the axial upper end of the stator, the first extension wire is led out from the first insulation framework, and the first extension wire is gathered on the first insulation framework according to all phases and then extends to the second insulation framework again to be fixed. The second extension line is led out from the second insulating framework and is connected with the terminal to form a neutral point for conducting the second extension line and the terminal; the stator is located above the compressor oil pool, and the second extension line and the neutral point are both fixed to the second insulation framework. According to the compressor, the problem that leakage current exceeds the standard due to the fact that the internal liquid level of an existing compressor is high and makes contact with a neutral point of a motor can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely relates to a kind of motor, compressor and air conditioner. BACKGROUND

[0002] Patent No. CN105553156A discloses a "Y" type wiring parallel concentrated winding compressor motor, which forms a neutral point with equal potential by connecting the neutral point extension lines two by two. The patent technology ensures the short circuit problem between the charged neutral point and the winding body and the insulation withstand voltage problem with the shell by placing the terminal on the first wall of the insulation framework, away from the winding body and the easily accessible conductive shell. However, since the neutral point is a bare conductive terminal and the number is large, the exposed area of the charged neutral point is large, and when the compressor is used in the air conditioning system, the internal liquid level is too high to contact the motor in some application scenarios. The motor neutral point of the patent solution is the lowest position of the motor live body, which is easily connected with the liquid with strong conductivity (the mixture of compressor refrigeration oil and refrigerant), thereby causing the leakage current to exceed the standard.

[0003] Therefore, the utility model researches and designs a kind of motor, compressor and air conditioner to overcome the technical problems of the compressor in the prior art, such as high internal liquid level contacting the motor neutral point, resulting in excessive leakage current. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model solves the technical problems of the compressor in the prior art, such as high internal liquid level contacting the motor neutral point, resulting in excessive leakage current, and provides a kind of motor, compressor and air conditioner.

[0005] To solve the above problems, the utility model provides a kind of motor, which comprises:

[0006] It comprises a stator and a terminal, the stator comprises a stator core and a winding, an extension line is led out from the winding, the extension line comprises a first extension line and a second extension line;

[0007] It further comprises a first insulation framework and a second insulation framework, the first insulation framework is located at the axial lower end of the stator, the second insulation framework is located at the axial upper end of the stator, the first extension line is led out from the first insulation framework, and the first extension line is extended to the second insulation framework again and fixed after being gathered by each phase on the first insulation framework, the second extension line is led out from the second insulation framework and connected with the terminal to form a neutral point for conducting between them; the stator is located above the compressor oil pool, and the second extension line and the neutral point are fixed on the second insulation framework.

[0008] In some embodiments,

[0009] Further comprising a lead assembly, the first extension wire forms a lead wire for conducting the winding by connecting with the terminal or connecting with the lead assembly, the second extension wire forms the neutral point for conducting both by riveting with the terminal.

[0010] In some embodiments,

[0011] Further comprising a rotor and a lead wire fixing structure, the rotor cooperates with the stator to be driven to rotate by the stator, the lead wire fixing structure is arranged on the second insulation frame to fix the lead wire assembly to the second insulation frame through the lead wire fixing structure.

[0012] In some embodiments,

[0013] The first extension wire has the following characteristics: each winding of each phase of the motor has one first extension wire, a plurality of first extension wires extend at intervals from each other on the outer peripheral wall of the first insulation frame and are gathered into lead wires of each phase, and are fixed in respective fixed positions, the interval size x has the following range: when the maximum no-load back electromotive force of the motor is not greater than 150V, x < 1.5mm, and when the maximum no-load back electromotive force of the motor is greater than 150V, x ≥ 1.5mm.

[0014] In some embodiments,

[0015] The first extension wire further has the following characteristics: the first extension wire in the section between the fixed position where the first extension wire is connected with the first insulation frame and the terminal connected with the first extension wire further has an insulation layer, and the insulation layer insulates the first extension wires of each phase after gathering according to each phase.

[0016] In some embodiments,

[0017] The neutral point is only one, and the second extension wire of each winding is conducted with at least one terminal and at most two terminals.

[0018] In some embodiments,

[0019] The terminal has a first gap with the second insulation frame, a second gap with the stator core, and a third gap with the shell of the motor, wherein the second gap and the third gap are both greater than 1.5mm, and the first gap is greater than 2mm.

[0020] In some embodiments,

[0021] The stator core comprises stator teeth, the windings are arranged on the stator teeth, the number of turns of the windings on two adjacent stator teeth is consistent, and in the two windings of the same phase, at most two winding coils have the same winding direction.

[0022] The utility model also provides a kind of compressor, it includes the motor of preceding.

[0023] The utility model also provides a kind of air conditioner, it includes the compressor of preceding.

[0024] The utility model provides a kind of motor, compressor and air conditioner have following beneficial effects:

[0025] The utility model discloses a second insulation framework is arranged in the axial upper end of the stator, the first extension line that is led out from the first insulation framework is extended to the second insulation framework and is fixed on the second insulation framework after each item is summarized on the first insulation framework, can effectively prevent the first extension line from being infiltrated by the liquid level (preferably oil) of compressor housing lower part and lead to the condition of electric leakage, simultaneously, the second extension line is led out from the second insulation framework of upper end and is connected with terminal and forms neutral point, so that neutral point is located at higher position, also can avoid neutral point from being infiltrated by the liquid of compressor housing lower part and lead to the condition of electric leakage, effectively solve the problem that the existing compressor has higher internal liquid level and contacts motor neutral point, leads to leakage current overproof, effectively improve safety performance. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the front structure diagram of motor stator in prior art;

[0027] Figure 2 It is the internal structure diagram of compressor in prior art;

[0028] Figure 3 It is the front structure diagram of motor stator of the utility model;

[0029] Figure 4 It is the internal structure diagram of compressor of the utility model;

[0030] Figure 5 It is the structure schematic diagram of first insulation framework of the utility model;

[0031] Figure 6 It is the structure schematic diagram of second insulation framework of the utility model;

[0032] Figure 7 It is the schematic diagram of two riveting conduction of second extension line of the utility model (the number 1-9 in the drawing is the first to ninth teeth on second insulation framework, respectively with the first stator tooth to ninth stator tooth on stator relative cooperation);

[0033] Figure 8 is the first extension line on the first insulation framework, and the fixed structure diagram (the numbers 1-9 in the diagram are the first to ninth teeth on the first insulation framework, which are matched with the first to ninth stator teeth on the stator respectively).

[0034] The reference signs are represented as:

[0035] 1, rotor; 2, stator; 3, stator core; 3, stator core; 4, winding; 5, extension line; 6, first extension line; 7, second extension line; 8, first insulation framework; 9, second insulation framework; 10, neutral point; 11, lead-out line assembly; 12, shell; 13, lead-out line fixed structure; 14, first extension line fixed structure; 15, terminal placing groove. DETAILED DESCRIPTION

[0036] 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. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. 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 the present application.

[0037] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0038] Unless otherwise specifically stated, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The technology, methods and devices known to those skilled in the art may not be discussed in detail, but under appropriate circumstances, the technology, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0039] In the description of the utility model, it needs to be understood that the orientation words such as '' front, back, up, down, left, right '', '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or positional relationship generally based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, in the absence of the opposite statement, these orientation words do not indicate and imply the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore can not be understood as the restriction of the protection scope of the utility model, the orientation words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0040] For the convenience of description, spatial relative terms can be used here, such as '' above '', '' above '', '' upper surface '', '' upper '' and the like, to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the example term '' above '' can include both '' above '' and '' below '' orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0041] In addition, it needs to be explained that the use of '' first '', '' second '' and the like to limit parts only for the convenience of distinguishing the corresponding parts, such as no further declaration, the above words have no special meaning, therefore can not be understood as the restriction of the protection scope of the utility model.

[0042] Patent No. CN105553156A discloses a Y-type concentrated winding parallel motor stator structure, and the technical scheme of the stator includes a stator core composed of non-oriented silicon steel punching sheet, a slot insulation composed of polyester film in the stator slot, a first insulation skeleton, a second insulation skeleton, and a winding and an additional structure of the winding. In the technical scheme, the first extension line and the second extension line are extended from the body of each phase winding, the first extension line is collected on the first insulation skeleton, the collected extension line groups are wrapped with an insulation sleeve on the outside, so as to prevent short circuit and other problems caused by possible damage of the surface insulation of the extension line conductor, and the lead-out terminal pierces and conducts, and is included in the insulation plastic shell with three mutually independent terminal wrapping cavities, so as to become a lead-out assembly. The lead-out assembly is located on the first insulation skeleton side of the stator assembly, and is fixed on the first insulation skeleton fixing structure at the collection position of the first extension line of each phase, so as to ensure that the lead-out assembly has no displacement in the operation process of the motor and the compressor, and to prevent possible scratching and other damage of the lead-out line.

[0043] The neutral point of Patent No. CN105553156A is composed of the second extension line through the terminal piercing and conducting. The second extension line is extended from the winding of each phase, and is pre-tightened on the first outer wall of the second insulation skeleton and the buckle structure of the extension line slot, so as to ensure that the adjacent second extension lines of each phase are close to each other. A larger groove for avoiding the terminal is also pre-set on the first wall of the second insulation skeleton, and the terminal pierces and conducts the second extension lines two by two at the groove position, so as to form a neutral point with equal potential.

[0044] Through the above technical scheme measures, the parallel concentrated winding stator and the motor thereof described in Patent No. CN105553156A are formed. After the motor is assembled into the compressor, the neutral point is below and the lead-out line is above. When the position of the liquid (including refrigeration oil, liquid refrigerant and other impurities soluble with the liquid refrigerant) in the compressor is high, the neutral point below the motor is easy to contact the liquid and generate excessive leakage current due to the certain polarity and conductivity of the molecular physical structure of the liquid.

[0045] As shown in Figures 3-8 The utility model provides a motor, which comprises:

[0046] The motor comprises a stator 2 and a terminal, the stator 2 comprises a stator core 3 and a winding 4, an extension line 5 is led out from the winding 4, and the extension line 5 comprises a first extension line 6 and a second extension line 7;

[0047] Further comprise first insulation skeleton 8 and second insulation skeleton 9, first insulation skeleton 8 is located at the axial lower end of the stator 2, second insulation skeleton 9 is located at the axial upper end of the stator 2, the first extension line 6 is drawn from the first insulation skeleton 8, and the first extension line 6 is extended to the second insulation skeleton 9 again after being summarized on the first insulation skeleton 8 and fixed, the second extension line 7 is drawn from the second insulation skeleton 9 and connected with the terminal, forming the neutral point 10 for the second extension line 7 and the terminal conduction;The stator 2 is located above the compressor oil pool, and the second extension line 7 and the neutral point 10 are fixed on the second insulation skeleton 9.

[0048] The utility model discloses a second insulation skeleton is set to the axial upper end of the stator, and the first extension line is drawn from the first insulation skeleton, and the first extension line is extended to the second insulation skeleton after being summarized on the first insulation skeleton and is fixed on the second insulation skeleton, can effectively prevent the first extension line from being immersed by the liquid level (preferably oil) of the lower part of the compressor shell and causes the situation of electric leakage, simultaneously, the second extension line is drawn from the second insulation skeleton of upper end and is connected with the terminal and forms the neutral point, so that the neutral point is located at the higher position, also can avoid the neutral point from being immersed by the liquid of the lower part of the compressor shell and causes the situation of electric leakage, effectively solve the problem that the internal liquid level of existing compressor is higher and contacts the neutral point of motor, causes the problem of leakage current overproof, effectively improve the safety performance.

[0049] The utility model discloses a stator preferably includes the stator core that is made of the non-oriented silicon steel punching piece layer, the slot insulation that is made of the polyester film and is inlaid in the slot of the stator core, the first insulation skeleton and the second insulation skeleton that are placed in the both ends of the stator assembly, the winding on each stator tooth, and the lead-out wire assembly and the neutral point that are made of the winding first extension line, the second extension line and its additional parts.

[0050] The utility model discloses a guarantee motor stator neutral point bare conductor is far away from the liquid level in the compressor, above-mentioned motor stator is when compressor assembly, be located above the compressor oil pool, and the assembly direction of stator is that the second insulation framework is located above the stator. Through above-mentioned technical scheme, parallel concentrated winding compressor motor neutral point is reversed to the upper end of motor, realize bare terminal far away from the liquid level in the compressor, the technical scheme of the utility model even if extreme case, liquid level submerges motor winding, because the neutral point is at the first wall of the second insulation framework, position is higher than winding and does not contact with the first extension line outer other structure, will not because capillary phenomenon or exhaust liquid accumulation and lead to neutral point in liquid environment, further realize the problem of preventing leakage current from being too high because of neutral point contact compressor internal liquid. Meanwhile this technical scheme whole production procedure is same with prior art scheme, only need to reverse the first extension line group that constitutes the lead-out wire to the second insulation framework, and the existing structure of second insulation framework can be directly used or slightly adjusted and used, need not add new tooling, mould and other additional investment, and the production investment of leakage current improvement scheme is less and the efficiency is high.

[0051] In some embodiments,

[0052] Still include lead-out wire assembly 11, the first extension line 6 is through with the terminal connection or with lead-out wire assembly 11 connection forms the lead-out wire that the winding 4 is conducted through, and the second extension line 7 is through with the terminal riveting and forms the neutral point 10 that both are conducted through.

[0053] This is the preferred connection mode of the first extension line and the second extension line of the utility model, the first extension line is connected or connected with the external lead-out wire assembly through the terminal to form the lead-out wire that the winding is conducted through, and the connection of the first extension line is preferably realized through the external lead-out wire assembly, and the second extension line is preferably connected and fixed with the terminal through the riveting mode, to form the center point.

[0054] The utility model each phase summary fixed first extension line group end each other connection lead-out wire terminal, and the terminal is placed in the independent interval insulation plastic shell with each phase, forms the lead-out wire assembly of motor;Because the upper cover of compressor to motor body generally has far distance, the length of first extension line group is also longer, in order to guarantee that the lead-out wire each phase wire bundle is tightly and not loose, to avoid the possible lead-out wire scratch and other damage problems, the first extension wire bundle group after the fixed point of second insulation framework lead-out wire needs to be further fastened, if the conductor wire diameter is thin, can select each phase extension wire bundle group and twist knot and form and fasten, if the conductor wire diameter is thick, and the twisting force is big, possibly will pull the terminal or cause the damage of conductor surface insulation layer, then select an insulation sleeve fixed in its outer layer.

[0055] In some embodiments,

[0056] Further comprising a rotor 1 cooperating with the stator 2 to be driven to rotate by the stator 2, and a lead-out wire fixing structure 13 arranged on the second insulation frame 9 to fix the lead-out wire assembly 11 to the second insulation frame 9 through the lead-out wire fixing structure 13.

[0057] The utility model further further through lead-out wire fixing structure, can fix the lead-out wire assembly of external connection to second insulation frame, thereby effectively fix the first extension line on the first insulation frame of lower extreme through lead-out wire assembly to the second insulation frame of upper extreme, thereby guaranteed the effect and effect of preventing liquid infiltration to the first extension line, further improved safety performance.

[0058] In some embodiments,

[0059] The first extension line 6 has the following characteristics: each winding of each phase of the motor has one first extension line 6, and a plurality of first extension lines 6 extend apart from each other on the outer peripheral wall of the first insulation frame 8 and are gathered into phase lead wires and are fixed in respective fixed positions, and the size x of the interval has the following range: x < 1.5 mm when the maximum no-load back electromotive force of the motor is not greater than 150 V, and x >= 1.5 mm when the maximum no-load back electromotive force of the motor is greater than 150 V.

[0060] The utility model discloses a first extension line for each winding of each phase of the motor, and each first extension line extends apart from each other on the outer side of the first wall of the first insulation frame and is gathered into phase lead wires and is fixed in respective fixed positions, and the interval x has the following range: x < 1.5 mm when the maximum no-load back electromotive force of the motor is not greater than 150 V, and x >= 1.5 mm when the maximum no-load back electromotive force of the motor is greater than 150 V, which can ensure that there is sufficient electrical clearance between live conductors and ensure insulation effect.

[0061] In order to prevent the first extension wires of each phase from being too close to each other during the grouping and gathering outside the first wall of the first insulation frame, and to prevent the possible wire damage from causing the short circuit or sparking of the extension wires of different phases, the technical scheme of the utility model sets the buckle (i.e. the first extension wire fixing structure 14) for assisting the layering of the extension wires near the notch corresponding to each extension wire slot of the first wall of the first insulation frame, and the buckle is radially protruded outside the first wall of the first insulation frame and is distributed at multiple positions between the extension wires of each phase from the extension position of the winding body to the gathering fixing point of the first extension wires of each phase; viewed from the rotating shaft of the motor, the extension wires of each phase form the wire passing channel which is independently layered according to each phase outside the first wall of the first insulation frame, and the minimum gap between the two extension wires between adjacent channels is x, when the maximum counter electromotive force of the motor is less than 150V, x is less than or equal to 1.5mm, when the maximum counter electromotive force of the motor is less than 50V, x is less than or equal to 0.5mm, and when the maximum counter electromotive force of the motor is greater than or equal to 150V, x is greater than 1.5mm. If there is an additional insulation outside the conductor surface of the first extension wire, such as an additional insulation sleeve, the above-mentioned spacing x can be 0mm.

[0062] In some embodiments,

[0063] The first extension wire 6 further has the following characteristics: between the fixed position where the first extension wire 6 is connected with the first insulation frame 8 and the terminal connected with the first extension wire 6, the first extension wire 6 further has an insulation layer, and the insulation layer separately insulates the first extension wires 6 of each phase after gathering.

[0064] The above-mentioned features can effectively prevent the poor interphase insulation caused by the possible damage such as the scratch of the paint film of the conductor of the first extension wire.

[0065] The first extension wire is gathered at the first extension wire fixing point of each phase pre-set on the first insulation frame, and an additional insulation layer is applied outside the gathered first extension wire bundle of each phase, such as an additional insulation sleeve, so as to ensure that the extension wires of different phases will not be short-circuited or sparked due to the possible damage of the conductor surface insulation. The first extension wire bundle of each phase with the additional insulation is extended through the gap between the windings to the second insulation frame end, and is gathered and fixed at the pre-set lead-out wire assembly fixing point of the second insulation frame.

[0066] In some embodiments,

[0067] The neutral point 10 is only one, and the second extension wire 7 of each winding is at least conducted with one terminal and at most conducted with two terminals to form the neutral point 10.

[0068] The above-mentioned structure can make the neutral point of the parallel frame structure have multiple riveting modes, i.e. the second extension wires of each winding are conducted two by two or multiple second extension wires are simultaneously conducted, and multiple schemes.

[0069] In an alternative embodiment, all the second extension wires are gathered together on the second insulation framework, and are connected to the neutral point by riveting the terminals, while the first extension wires are fixed after being gathered together on the first insulation framework, and are extended to the second insulation framework again.

[0070] In an alternative embodiment, the second extension wires are fixed after being gathered together on the second insulation framework, and are extended to the first insulation framework again along the winding gap, and are connected to the neutral point by riveting, and are additionally insulated to prevent the problem of sparking and short circuit between different phase windings caused by possible wire damage of the second extension wires.

[0071] In some embodiments,

[0072] The terminal has a first gap with the second insulation framework 9, a second gap with the stator core 3, and a third gap with the housing 12 of the motor, wherein the second gap and the third gap are both greater than 1.5 mm, and the first gap is greater than 2 mm.

[0073] The purpose of the above gaps is to ensure the electrical clearance and the safe operation distance of the terminal riveting; wherein the gaps (the second and third gaps) between the terminal and the housing, the core and the live conductor have the following relationship with the maximum back electromotive force E0 of the motor, i.e. when 150V < E0, the second and third gaps are both greater than 1.5 mm, when 50V < E0 < 150V, the second and third gaps are both between 0.5 mm and 1.5 mm, and when E0 ≤ 50V, the second and third gaps are both not greater than 0.5 mm.

[0074] The second extension wires of each phase are extended from the corresponding second extension wire notches to the outside of the first wall of the second insulation framework and fixed on the corresponding buckles (first extension wire fixing structures 14) pre-set on the first wall of the second insulation framework, so that each second extension wire is tensioned and close to each other under the action of the pre-tightening force, and the terminal pierces the above-mentioned second extension wire, the terminal has a plurality of, and the extension wire of each winding is communicated with at least one terminal piercing, so that the above-mentioned second extension wire is pierced two by two. After the terminal is assembled, the terminal is located in the terminal avoiding groove (terminal placing groove 15) on the first wall of the second insulation framework, and the terminal is not in contact with other structures except for being in contact with the riveted and pierced conductor, further, the terminal has a gap y from the compressor shell and the winding body, when the maximum counter electromotive force of the motor is less than 150V, y is less than or equal to 1.5mm, when the maximum counter electromotive force of the motor is less than 50V, y is less than or equal to 0.5mm, when the maximum counter electromotive force of the motor is greater than or equal to 150V, y is greater than 1.5mm, and the above-mentioned gap y ensures that the terminal position does not have insulation withstand voltage failure problem when the motor normally works. The terminal has a distance from the framework body, and the minimum value is 2mm, so as to ensure that the riveting process of the terminal does not hurt the framework.

[0075] In some embodiments,

[0076] The stator core 3 comprises stator teeth, the winding 4 is wound on the stator teeth, the number of turns of the winding on two adjacent stator teeth is consistent, and in the most adjacent two windings of the same phase, at most two winding coils have consistent winding directions.

[0077] The above-mentioned number of turns can protect two winding modes of the utility model, i.e., a mode in which the winding rotation directions of each winding are consistent and a mode in which the winding rotation directions are alternately positive and negative.

[0078] For example, Figures 7-8, in order to improve the efficiency and reduce the terminal riveting quantity, and to reduce the risk of piercing and electrical safety risk, at least one of the second extension lines of the adjacent three windings is pierced by two terminals at the same time, thereby reducing the number of terminal riveting, improving production efficiency and stator reliability. Specifically, taking a 9-slot stator as an example, the first tooth of the stator starting winding is numbered 1, and the remaining teeth are numbered 2-9 in the direction of rotation of the motor; the winding tooth numbers of the first to third phases of the stator are 1, 4, 7, 2, 5, 8, and 3, 6, 9, respectively, wherein the first group of teeth of each phase winding, i.e. 1, 2, 3, the winding direction of the winding of the second group of teeth, i.e. 4, 5, 6, is counterclockwise, and the winding direction of the winding of the third group of teeth, i.e. 7, 8, 9, is clockwise; wherein the starting line of each positive winding extends along the first extension line slot of the first insulation skeleton, which is the first extension line of each winding, and the extension line at the end of the positive winding extends along the second extension line slot of the second insulation skeleton, which is the second extension line of each winding; the starting line of each negative winding (i.e. the winding of the fourth, fifth and sixth teeth) is extended from the second extension line of the winding of the previous group of teeth, and the extension line at the end of the winding extends along the first extension line slot of the first insulation skeleton, which is the first extension line of the winding of the second group of teeth; the winding mode of the winding of the third group of teeth is the same as that of the winding of the first group of teeth, and the extension line after the winding extends along the corresponding second extension line slot of the second insulation skeleton, and coincides with the aforementioned second extension line along the outer side of the first wall of the second insulation skeleton. The terminal pierces the two second extension lines to form a neutral point. Because the windings on the first and second groups of teeth are positive and negative, the second extension lines of the adjacent windings of each phase are connected by the above winding action, and no additional riveting terminal is needed, thereby reducing the number of parallel common end riveting terminals, improving the production efficiency of the stator and the reliability of the motor.

[0079] The utility model also provides a kind of compressor, it includes the motor of preceding.

[0080] The utility model has the advantages of:

[0081] Without changing the existing production tooling equipment and without adding related molds of motor parts, the utility model reverses the neutral point of terminal exposure to the upper part of motor, and simultaneously places the lead-out wire and the neutral point on the upper end of motor, thereby avoiding the problem of leakage current caused by the exposure of stator neutral point to liquid when the liquid level of compressor is high.

[0082] The utility model also provides a kind of air conditioner, it includes the compressor of preceding.

[0083] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electric motor, characterized in that: include: Stator (2) and terminals, the stator (2) including stator core (3) and winding (4), with extension lines (5) extending from the winding (4), the extension lines (5) including a first extension line (6) and a second extension line (7); It also includes a first insulating frame (8) and a second insulating frame (9). The first insulating frame (8) is located at the lower axial end of the stator (2), and the second insulating frame (9) is located at the upper axial end of the stator (2). The first extension line (6) is led out from the first insulating frame (8), and the first extension line (6) extends again to the second insulating frame (9) after being summarized on the first insulating frame (8) according to each phase and is fixed. The second extension line (7) is led out from the second insulating frame (9) and connected to the terminal to form a neutral point (10) that conducts to the second extension line (7) and the terminal. The stator (2) is located above the compressor oil sump, and the second extension line (7) and the neutral point (10) are both fixed on the second insulating frame (9).

2. The motor according to claim 1, characterized in that: It also includes a lead wire assembly (11), wherein the first extension wire (6) forms a lead wire that conducts the winding (4) by connecting to the terminal or to the lead wire assembly (11), and the second extension wire (7) forms the neutral point (10) that conducts to both by riveting to the terminal.

3. The motor according to claim 2, characterized in that: It also includes a rotor (1) and a lead wire fixing structure (13), wherein the rotor (1) cooperates with the stator (2) to be driven to rotate by the stator (2), and the lead wire fixing structure (13) is disposed on the second insulating frame (9) to fix the lead wire assembly (11) to the second insulating frame (9) through the lead wire fixing structure (13).

4. The motor according to claim 1, characterized in that: The first extension line (6) has the following characteristics: each winding of each phase of the motor has a first extension line (6), and multiple first extension lines (6) extend from each other at intervals through the outer peripheral wall of the first insulating frame (8) and converge to form the lead of each phase, and are fixed in their respective fixed positions. The size x of the interval has the following range: when the maximum no-load back EMF of the motor is not greater than 150V, x < 1.5mm; when the maximum no-load back EMF of the motor is greater than 150V, x ≥ 1.5mm.

5. The motor according to claim 1, characterized in that: The first extension line (6) also has the following features: between the fixed position where the first extension line (6) is connected to the first insulating frame (8) and the terminal connected to the first extension line (6), the first extension line (6) of this segment also has an insulating layer, which isolates each phase of the combined first extension line (6) according to phase.

6. The motor according to claim 1, characterized in that: There is only one neutral point (10), and the second extension line (7) of each winding is connected to at least one terminal and at most two terminals to form the neutral point (10).

7. The motor according to claim 1, characterized in that: There is a first gap between the terminal and the second insulating frame (9), a second gap between the terminal and the stator core (3), and a third gap between the terminal and the motor housing (12), wherein the second gap and the third gap are both greater than 1.5 mm, and the first gap is greater than 2 mm.

8. The motor according to claim 1, characterized in that: The stator core (3) includes stator teeth, and the winding (4) is wound on the stator teeth. The number of turns of the winding on two adjacent stator teeth is the same, and in the two nearest windings of the same phase, at most two winding coils have the same winding direction.

9. A compressor, characterized in that: The motor included in any one of claims 1-8.

10. An air conditioner, characterized in that: Includes the compressor described in claim 9.

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