WO2019134374A1

WO2019134374A1 - Compressor and refrigeration apparatus

Info

Publication number: WO2019134374A1
Application number: PCT/CN2018/102030
Authority: WO
Inventors: 乔正忠; 邱小华; 毛临书; 徐飞; 王玉龙
Original assignee: 广东美芝制冷设备有限公司
Priority date: 2018-01-03
Filing date: 2018-08-23
Publication date: 2019-07-11
Also published as: JP2021508232A; US20200332787A1; CN207761947U

Abstract

Disclosed are a compressor and a refrigeration apparatus, wherein the compressor comprises: a housing (1) provided with a first wiring terminal (12) and a second wiring terminal (14); and an electric motor (2) arranged inside the housing (1), the electric motor (2) comprising a stator (202), a first wire set and a second wire set, the first wire set comprising a plurality of first lead wires (204), the second wire set comprising a plurality of second lead wires (206), the first wire set being led out from a first position of an end face of the stator (202) and being connected to the first wiring terminal (12), and the second wire set being led out from a second position of the end face of the stator (202) and being connected to the second wiring terminal (14), wherein the midpoint of a connecting line between the first position and the second position is a middle point (C), a plane passing through the middle point (C) and the axis of an output shaft of the electric motor (2) is denoted as a middle plane (M), the first wiring terminal (12) and the first position are located on one side of the middle plane (M), and the second wiring terminal (14) and the second position are located on the other side of the middle plane (M). This type of compressor arrangement prevents the first wire set and the second wire set from intersecting, and eliminates the safety hazard caused by the intersection of the lead wires.

Description

Compressor and refrigeration equipment

The present application claims priority to Chinese Patent Application No. 20182000, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of compressor technology, and in particular to a compressor and a refrigeration device.

Background technique

In order to achieve efficient operation of the full frequency range of the compressor, winding switching technology has been a hot spot in the industry in recent years.

In the connection relationship between the terminal of the compressor and the motor circuit, the position of the motor lead wire of the general purpose and the position of the motor lead wire of the winding switching use are usually different. If only the conventional connection mode is used, as shown in FIG. It will form problems such as staggered winding, winding, or positional conflict between the line and the component, which affects the performance of the compressor and also poses a safety hazard. Therefore, the terminal structure and position of the winding switching application need to be optimized with the compressor motor. design.

Summary of the invention

In order to solve at least one of the above technical problems, the embodiment of the first aspect of the invention proposes a compressor.

In a second aspect of the invention, a refrigeration apparatus is also proposed.

In view of this, according to an embodiment of the first aspect of the present invention, the present invention provides a compressor including: a housing having a first terminal and a second terminal disposed thereon; and a motor disposed in the housing The electric machine includes a stator, a first wire group and a second wire group, the first wire group includes a plurality of first lead wires, and the second wire group includes a plurality of second lead wires, the first wire group is led out from the first position of the end face of the stator And connected to the first terminal, the second wire group is led out from the second position of the end surface of the stator and connected to the second terminal; wherein the midpoint of the line connecting the first position and the second position is an intermediate point The plane of the intermediate point and the axis of the output shaft of the motor is referred to as the intermediate plane, the first terminal and the first position are located on one side of the intermediate plane, and the second terminal and the second position are located on the other side of the intermediate plane.

According to the present invention, the first wiring terminal and the first wire group are disposed on one side of the intermediate plane, and the second terminal and the second wire group are disposed on the other side of the intermediate plane, thereby avoiding the first wire group and The intersection or winding of the second wire group ensures that the safety distance between the lead wire and the lead wire, the lead wire and other conductive components is sufficient, the reliability is high, the safety hazard caused by the staggered wire lead is eliminated, and the previous design structure Compared with the number of terminals, the mounting structure is simplified, the manufacturing and installation are easy, the assembly and manufacturing of the lead wires and the terminals are improved, and the manufacturing efficiency of the product is improved, and the motor in the compressor is also Winding switching is easier to achieve.

In addition, the compressor in the above embodiment provided by the present invention may further have the following additional technical features:

In the above technical solution, preferably, the first terminal includes a plurality of first terminals, the plurality of first lead wires are respectively connected to the plurality of first terminals; the second terminal includes a plurality of second terminals, A plurality of second lead wires are respectively connected to the plurality of second terminals.

In the technical solution, the first terminal includes a plurality of first terminals, and the plurality of first lead wires are sequentially connected to the plurality of first terminals to realize the connection between the lead wires and the terminals, and may also be The specific design requirements select a suitable connection sequence to avoid the intersection or entanglement between the plurality of first lead wires. Similarly, the second terminal and the second lead are also connected in sequence.

In any of the above technical solutions, preferably, the number of the first lead wires is three, and the number of the second lead wires is three; the number of the first binding posts is three, and the number of the second binding posts is three. .

In the technical solution, the number of the first lead wires is three, and the number of the second lead wires is three, which can be applied to a three-phase motor, and the compressor with the three-phase motor has a simple structure and reliable operation stability. Strong versatility.

In any of the above technical solutions, preferably, the three first terminals are two-two parallel and the distance between each two first terminals is equal; the three second terminals are two-two parallel and each two second wires The distance between the columns is equal.

In the technical solution, the three first terminals are parallel and the distance between each two first terminals is equal, which is equivalent to forming a line between the three first terminals on the same plane. The side triangles are beneficial to increase the structural strength of the first terminal and also facilitate the wiring of the terminals. The second terminal is also in the same arrangement as the first terminal.

In any of the above technical solutions, preferably, the number of the first lead lines is equal to the number of the second lead lines.

In the technical solution, the number of the first lead wire and the second lead wire are equal in the motor, and the first lead wire and the second lead wire are respectively located on both sides of the motor, so as to avoid connecting the lead wires after connecting the lead wires and the connecting terminals. Interlaced or entangled.

In any one of the above aspects, preferably, the method further includes: a first socket, the first wire group is connected to the first socket, the first socket is inserted on the plurality of first terminals; the second socket, the second wire group Connected to the second socket, the second socket is inserted on the plurality of second terminals.

In the technical solution, the first wire group is first connected to the first socket, and then the first socket is inserted into the first terminal, so that the first wire group and the first terminal can achieve a stable and reliable connection, and at the same time It also simplifies the process of assembling the compressor, and directly inserts the socket into the terminal block to realize the connection between the first wire group and the first terminal block, thereby improving the manufacturing efficiency of the compressor and facilitating the later disassembly and maintenance.

In any of the above aspects, preferably, the motor is a permanent magnet motor.

In the technical solution, the motor used in the compressor is a permanent magnet motor, and the permanent magnet motor has a simple structure and stable operation, and is suitable for most compressors. At the same time, the permanent magnet motor with the above structure is convenient for winding switching, which is beneficial for compression. Efficient operation of the entire frequency band of the machine.

In any of the above aspects, preferably, the motor further includes a rotor disposed in the stator; wherein the permanent magnet of the rotor is a rare earth permanent magnet or a ferrite permanent magnet, and the permanent magnet is a plate permanent magnet or a tile permanent magnet .

In this technical solution, the motor further includes a rotor, wherein the permanent magnet of the rotor can be selected from a rare earth permanent magnet or a ferrite permanent magnet, and the permanent magnet has a plate-like structure or a tile-shaped structure to facilitate the arrangement and assembly of the permanent magnet, and at the same time It is also beneficial to increase the magnetic properties of the permanent magnet and the working efficiency of the compressor.

A refrigeration apparatus according to an embodiment of the second aspect of the present invention includes the compressor of the first aspect.

The refrigeration equipment provided by the invention avoids the intersection or winding of the lead wires in the compressor by adopting the above-mentioned compressor, thereby ensuring a sufficient safety distance between the lead wires and the lead wires, the lead wires and other conductive members, and high reliability. It eliminates the safety hazard caused by the staggered lead wires, and reduces the number of terminals compared with the previous design structure, simplifies the mounting structure, is easy to manufacture and install, and improves the assembly manufacturability of the lead wires and the terminal blocks. And it is beneficial to improve the manufacturing efficiency of the compressor, and at the same time make the winding switching of the motor in the compressor easier to realize.

In the above technical solution, preferably, the refrigeration device is a refrigerator or an air conditioner.

In the technical solution, the refrigeration device is a refrigerator or an air conditioner, and the refrigerator or the air conditioner can adopt the above-mentioned compressor, thereby reducing the safety hazard caused by the interlacing of the lines in the compressor, and also improving the production efficiency of the product.

Additional aspects and advantages of the invention will be apparent from the description of the invention.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic view showing the connection of an upper casing assembly of a compressor and a motor lead wire in the related art;

2 is a schematic structural view of an embodiment of the present invention;

Figure 3 is a schematic view showing the assembly of the structure shown in Figure 2;

Figure 4 is a schematic view showing the structure of the motor in the structure shown in Figure 2

Figure 5 is a plan view of the structure shown in Figure 2;

Figure 6 is a partial cross-sectional view showing an embodiment of the present invention;

Figure 7 is a schematic structural view of a rotor according to an embodiment of the present invention;

Figure 8 is a schematic structural view of a rotor according to an embodiment of the present invention;

Figure 9 is a schematic view showing the connection of a compressor in an embodiment of the present invention.

Wherein, the correspondence between the reference numerals and the component names in FIGS. 1 to 9 is:

1 housing, 12 first terminal, 122 first terminal, 14 second terminal, 142 second terminal, 2 motor, 202 stator, 204 first lead, 206 second lead, 208 rotor, 2082 Permanent magnet, 302 first socket, 304 second socket, 402 crankshaft, 404 main bearing, 406 cylinder, 408 piston, 410 auxiliary bearing, 412 exhaust pipe.

Detailed ways

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

A compressor and a refrigerating apparatus according to some embodiments of the present invention are described below with reference to FIGS. 2 through 9.

As shown in FIG. 2 to FIG. 6 , the present invention provides a compressor including: a housing 1 on which a first terminal 12 and a second terminal 14 are disposed; and a motor 2 disposed in the housing 1 The motor 2 includes a stator 202, a first line group and a second line group. The first line group includes a plurality of first lead lines 204, and the second line group includes a plurality of second lead lines 206. The first line group is composed of the stator 202. The first position of the end face is led out and connected to the first terminal 12, and the second wire group is led out from the second position of the end face of the stator 202 and connected to the second terminal 14; wherein the first position is connected to the second position The midpoint of the line is the intermediate point, and the plane passing through the intermediate point and the axis of the output shaft of the motor 2 is referred to as the intermediate plane, the first terminal 12 and the first position are located on one side of the intermediate plane, and the second terminal 14 and the second The position is on the other side of the midplane.

According to the present invention, the first terminal 12 and the first wire group are disposed on one side of the intermediate plane, and the second terminal 14 and the second wire group are disposed on the other side of the intermediate plane, thereby avoiding the first line. The intersection or winding of the group and the second wire group ensures that the safety distance between the lead wire and the lead wire, the lead wire and other conductive components is sufficient, the reliability is high, and the safety hazard caused by the staggered wire lead is eliminated, and the conventional Compared with the design structure, the number of terminals is reduced, the mounting structure is simplified, the manufacturing and installation are easy, the assembly manufacturing property of the lead wires and the terminal blocks is improved, and the manufacturing efficiency of the product is improved, and the compressor is also in the compressor. The winding switching of the motor 2 is easier to implement.

In this embodiment, specifically, as shown in FIG. 4, the first wire group is led out from the first position of the end surface of the stator 202, and the second wire group is taken out from the second position of the end surface of the stator 202, and the first position is provided with a point. A, point B is provided at the second position, and the midpoint of the line connecting A and B is point C, and a plane M is determined through the point C and the rotation axis of the compressor and the motor 2 thereof, thereby the first line group and the second line The group and the first terminal 12 and the second terminal 14 are respectively disposed on both sides of the plane M to avoid line crossing, and it is also convenient to implement the star-delta switching for the motor 2 subsequently. Wherein, the point A may be any point in the first position range, and the point B may be any point in the second position range; the metal piece may be connected to the terminal on the joint of the wire group, or the joint connection of the winding may be taken out. The wire assembly is connected to the terminal through the lead wire assembly.

In a compressor of the related art shown in FIG. 1, the two terminals are on the same side and the distance is too close, wherein two sets of lead wires intersect and a set of lead wires cross the exhaust pipe, which may cause electrical The insufficient distance also causes difficulty in the manufacturing process; and the compressor provided by the present invention, as shown in FIG. 3, can avoid the intersection between the lead wires and the intersection of the lead wires and the exhaust pipe 412, thereby avoiding different lead-outs. The winding between the wires ensures the safety distance between the components in the compressor, making the wiring inside the compressor safer and more reasonable. Here, the exhaust pipe and the casing located outside the motor are not shown in FIG.

In an embodiment of the present invention, preferably, as shown in FIG. 2, FIG. 3, FIG. 5 and FIG. 6, the first terminal 12 includes a plurality of first terminals 122, and the plurality of first lead lines 204 are respectively The plurality of first terminals 122 are connected; the second terminal 14 includes a plurality of second terminals 142, and the plurality of second leads 206 are respectively connected to the plurality of second terminals 142.

In this embodiment, the first terminal 12 includes a plurality of first terminals 122, and the plurality of first lead wires 204 are sequentially connected to the plurality of first terminals 122 to realize the connection between the lead wires and the terminals. At the same time, a suitable connection sequence can be selected according to specific design requirements to avoid the intersection or winding between the plurality of first lead wires 204. Similarly, the second terminal 14 and the second lead 206 are also connected in sequence. The number of the first terminal 122 and the second terminal 142 may be designed according to actual needs, such as two, three, four or more.

In an embodiment of the present invention, preferably, as shown in FIG. 2, FIG. 3 and FIG. 5, the number of the first lead wires 204 is three, and the number of the second lead wires 206 is three; the first binding post The number of 122 is three, and the number of second terminals 142 is three.

In this embodiment, the number of the first lead wires 204 is three, and the number of the second lead wires 206 is three, which is applicable to the three-phase motor 2, and the compressor of the three-phase motor 2 has a simple structure and stable operation. Reliable and highly versatile.

In an embodiment of the present invention, preferably, as shown in FIG. 2, FIG. 3 and FIG. 5, the three first terminals 122 are two and two parallel and the distance between each two first terminals 122 is equal; The second terminals 142 are two parallel and the distance between each two second terminals 142 is equal.

In this embodiment, the three first terminals 122 are parallel to each other and the distance between each two first terminals 122 is equal, which is equivalent to the formation of a line between the three first terminals 122 on the same plane. An equilateral triangle is used to improve the structural strength of the first terminal 12 and also facilitate the wiring of the terminal. The second terminal 142 also adopts the same arrangement as the first terminal 122.

In one embodiment of the invention, preferably, the number of first lead lines 204 is equal to the number of second lead lines 206.

In this embodiment, the number of the first lead wires 204 and the second lead wires 206 are equal in the motor 2, and the first lead wires 204 and the second lead wires 206 are respectively located on both sides of the motor 2 to avoid the lead wires and the terminal blocks. Interlacing or winding between the individual lead wires after the connection.

In an embodiment of the present invention, preferably, as shown in FIG. 4, the method further includes: a first socket 302, the first wire group is connected to the first socket 302, and the first socket 302 is inserted in the plurality of first wires. The second socket 304 is connected to the second socket 304, and the second socket 304 is inserted on the plurality of second terminals 142.

In this embodiment, the first wire group is first connected to the first socket 302, and the first socket 302 is inserted into the first terminal 12, so that the first wire group and the first terminal 12 can be stable and reliable. The connection also simplifies the process of assembling the compressor, and directly inserts the socket into the terminal to realize the connection between the first wire group and the first terminal 12, thereby improving the manufacturing efficiency of the compressor and facilitating the later disassembly. And maintenance.

In an embodiment of the invention, preferably the motor 2 is a permanent magnet motor.

In this embodiment, the motor 2 used in the compressor is a permanent magnet motor, and the permanent magnet motor has a simple structure and stable operation, and is suitable for most compressors. At the same time, the permanent magnet motor with the above structure is convenient for winding switching, which is beneficial to realize Efficient operation of the full frequency range of the compressor.

In one embodiment of the invention, preferably, as shown in Figures 4, 7, and 8, the motor 2 further includes a rotor 208 disposed within the stator 202; wherein the permanent magnets 2082 of the rotor 208 are rare earth permanent A magnet or a ferrite permanent magnet, and the permanent magnet 2082 is a plate-shaped permanent magnet or a tile-shaped permanent magnet.

In this embodiment, the motor 2 further includes a rotor 208, wherein the permanent magnet 2082 of the rotor 208 can be selected from a rare earth permanent magnet or a ferrite permanent magnet, and the permanent magnet 2082 has a plate-like structure (as shown in FIG. 7) or a tile shape. The structure (shown in Figure 8) facilitates the placement and assembly of the permanent magnets 2082, while also facilitating the magnetic properties of the permanent magnets 2082 and the efficiency of operation of the compressor. The permanent magnets 2082 can be installed in the iron core slots provided in the rotor 208. Correspondingly, the windings of the stator 202 can be disposed on the iron core of the stator 202.

As shown in FIGS. 3, 5, and 6, the compressor further includes an exhaust pipe 412 and a compression portion. The exhaust pipe 412 is used for exhausting, and the first wire group and the second wire group are not intersected with the exhaust pipe 412, thereby leaving a sufficient safety distance; the compression portion specifically includes the crankshaft 402, the main bearing 404, and the cylinder. 406, the piston 408, the auxiliary bearing 410 and the like, the crankshaft 402 is connected to the rotor 208, and the piston 408 in the compression portion is moved to compress the gas. In addition, the housing 1 can also be specifically divided into an upper housing, a lower housing and a main housing, and a sealed cavity of the compressor is formed by a sealing fit of the upper housing, the lower housing and the main housing.

The present invention also provides a refrigeration apparatus comprising: the compressor of the first aspect.

In an embodiment of the invention, preferably, the refrigeration device is a refrigerator or an air conditioner.

In this embodiment, the refrigeration device is a refrigerator or an air conditioner, and the refrigerator or the air conditioner can adopt the above-mentioned compressor to reduce the safety hazard caused by the interlacing of the wires in the compressor, and at the same time, can improve the production efficiency of the product.

In an embodiment of the present invention, preferably, as shown in FIG. 9, the frequency converter is connected to the power source, and the frequency converter is further connected to the compressor and supplies power to the compressor, and the circuit is connected to the compressor and the compressor. The switch is used to switch the winding connection mode of the motor 2 in the compressor, for example, to realize the conversion of the star connection and the delta connection. By adopting the above compressor, the arrangement of the switch is facilitated, thereby facilitating the winding switching of the motor.

In the present invention, the term "plurality" means two or more, unless specifically defined otherwise. The terms "installation", "connected", "connected", "fixed" and the like should be understood broadly. For example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "connected" may They are directly connected or indirectly connected through an intermediary. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in the present invention. At least one embodiment or example. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A compressor, comprising:

a housing on which the first terminal and the second terminal are disposed;

a motor disposed in the housing, the motor including a stator, a first wire group, and a second wire group, the first wire group including a plurality of first lead wires, and the second wire group including a plurality of second lead wires The first wire group is led out from a first position of an end surface of the stator and connected to the first terminal, and the second wire group is led out from a second position of an end surface of the stator and The two terminals are connected;

Wherein the midpoint of the line connecting the first position and the second position is an intermediate point, and a plane passing through the intermediate point and an axis of the output shaft of the motor is recorded as an intermediate plane, the first terminal And the first position is located on one side of the intermediate plane, and the second terminal and the second position are located on the other side of the intermediate plane.
The compressor according to claim 1, wherein

The first terminal includes a plurality of first terminals, and the plurality of first leads are respectively connected to the plurality of first terminals;

The second terminal includes a plurality of second terminals, and the plurality of second leads are respectively connected to the plurality of the second posts.
The compressor according to claim 2, wherein

The number of the first lead lines is three, and the number of the second lead lines is three;

The number of the first terminals is three, and the number of the second terminals is three.
The compressor according to claim 3, wherein

The three first terminals are two-two parallel and the distance between each two of the first terminals is equal;

The three second terminals are two-two parallel and the distance between each two of the second terminals is equal.
A compressor according to any one of claims 1 to 4, characterized in that

The number of the first lead lines is equal to the number of the second lead lines.
The compressor according to any one of claims 2 to 4, further comprising:

a first socket, the first wire group is connected to the first socket, and the first socket is inserted on a plurality of the first terminals;

a second socket, the second wire set is connected to the second socket, and the second socket is inserted on a plurality of the second terminals.
A compressor according to any one of claims 1 to 4, characterized in that

The motor is a permanent magnet motor.
A compressor according to any one of claims 1 to 4, characterized in that

The motor further includes a rotor disposed within the stator;

The permanent magnet of the rotor is a rare earth permanent magnet or a ferrite permanent magnet, and the permanent magnet is a plate-shaped permanent magnet or a tile-shaped permanent magnet.
A refrigeration device, comprising:

A compressor according to any one of claims 1 to 8.
A refrigeration apparatus according to claim 9, wherein

The refrigeration device is a refrigerator or an air conditioner.