Compressors and refrigeration equipment

Abstract

The present invention provides a compressor and a refrigeration device, wherein the compressor includes: a motor, the motor includes a multi-phase winding, the winding includes a first lead wire and a second lead wire; a first terminal, a plurality of first terminals are arranged on the first terminal; a second terminal, a plurality of second terminals are arranged on the second terminal, and the distribution position of the second terminals on the second terminal is the same as the distribution position of the first terminals on the first terminal; wherein the first lead wire of the multi-phase winding is respectively connected to the plurality of first terminals according to a first connection sequence, and the second lead wire of the multi-phase winding is respectively connected to the plurality of second terminals according to a second connection sequence. In the compressor provided by the present invention, the terminal corresponds reliably to the motor phase sequence, so that the motor and the compressor have the advantage of high fault tolerance.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor and a refrigeration device. Background Art

[0002] As the requirements for energy efficiency of household appliances become higher and higher, the high energy efficiency of compressors in the full frequency band has become the focus of industry research in recent years. Variable frequency compressors are generally driven by permanent magnet motors. The expected parameters of permanent magnet variable frequency motors at low speeds and at high speeds are contradictory. Therefore, the comprehensive performance of traditional permanent magnet motors with fixed windings and fixed parameters in the full frequency band is limited.

[0003] In order to solve the above problems, switchable winding technology has become a hot topic in industry research in recent years.

[0004] However, the current permanent magnet motor with switchable windings adopts a winding series-parallel switching structure, has many terminals, and a relatively complex structure, and has limitations in application. Summary of the invention

[0005] In order to solve at least one of the above technical problems, an embodiment of a first aspect of the present invention provides a compressor.

[0006] A second embodiment of the present invention further provides a refrigeration device.

[0007] In view of this, according to an embodiment of the first aspect of the present invention, the present invention proposes a compressor, comprising: a motor, the motor comprising a multi-phase winding, the winding comprising a first lead wire and a second lead wire; a first terminal, a plurality of first terminals are arranged on the first terminal; a second terminal, a plurality of second terminals are arranged on the second terminal, and the distribution position of the second terminals on the second terminal is the same as the distribution position of the first terminals on the first terminal; wherein the first lead wires of the multi-phase winding are respectively connected to the plurality of first terminals according to a first connection sequence, and the second lead wires of the multi-phase winding are respectively connected to the plurality of second terminals according to a second connection sequence.

[0008] The compressor provided by the present invention connects the first lead wire and the second lead wire of the multi-phase winding to the multiple first connecting posts and the second connecting posts respectively according to a preset wiring sequence, so that the wiring terminals and the motor phase sequence can reliably correspond, thereby making the motor and the compressor have the advantage of high fault tolerance; in addition, the wiring method of the compressor has a simple structure, which is convenient for line connection, and is also conducive to winding switching of multi-phase motors with various slot-pole combinations, and is particularly suitable for permanent magnet motors.

[0009] In addition, the compressor in the above embodiment provided by the present invention may also have the following additional technical features:

[0010] In the above technical solution, preferably, the first wiring sequence is the same as or opposite to the second wiring sequence.

[0011] In this technical solution, when the first wiring sequence is the same as or opposite to the second wiring sequence, relevant personnel can understand the corresponding relationship between the second wiring terminal and the motor phase sequence after understanding the corresponding relationship between the first wiring terminal and the motor phase sequence, which is convenient for assemblers or maintenance personnel to assemble or disassemble the compressor, and can also play a certain anti-mistake effect.

[0012] In any of the above technical solutions, preferably, the number of the first binding posts is equal to the number of the second binding posts.

[0013] In this technical solution, the number of the first terminals is equal to the number of the second terminals, so that the first terminals and the second terminals can respectively realize the same or opposite phase sequence correspondence with the motor.

[0014] In any of the above technical solutions, preferably, the number of first terminals is equal to the number of phases of the winding.

[0015] In this technical solution, the number of the first terminals is equal to the number of phases of the winding, so that the winding and the first terminals can achieve a one-to-one phase sequence correspondence.

[0016] In any of the above technical solutions, preferably, the number of the first binding posts is three, and the number of the second binding posts is three; or the number of the first binding posts is four, and the number of the second binding posts is four.

[0017] In this technical solution, when the number of the first terminals is three and the number of the second terminals is three, the corresponding connected motor is a three-phase motor, and when the number of the first terminals is four and the number of the second terminals is four, the corresponding connected motor is a four-phase motor. Generally, the number of terminals on the terminal corresponds to the number of phases of the motor. Furthermore, the number of terminals can also be two, five, six or more.

[0018] In any of the above technical solutions, preferably, the winding includes: a plurality of coils connected in parallel, the coil including a first connector and a second connector; wherein the plurality of first connectors of the winding are connected to the first lead wire, and the plurality of second connectors of the winding are connected to the second lead wire.

[0019] In this technical solution, generally, the winding may include a single coil, multiple coils connected in series, or multiple coils connected in parallel. When the winding includes multiple coils connected in parallel, each coil includes a first connector and a second connector. The first connector of each coil in the same winding is connected to the first lead wire, and the second connector is connected to the second lead wire, thereby realizing the connection of multiple parallel coils in the winding to the terminal.

[0020] In any of the above technical solutions, preferably, the number of coils connected in parallel in the winding is an odd number.

[0021] In this technical solution, the number of coils connected in parallel in the winding is an odd number. By connecting multiple coils in parallel in the same winding in the above-mentioned manner, each coil is connected to the terminal, thereby realizing winding switching for a motor with an odd number of coils in each phase winding.

[0022] In any of the above technical solutions, preferably, the motor is a permanent magnet motor.

[0023] In this technical solution, the motor in the compressor is a permanent magnet motor. By adopting the above-mentioned connection method, it is easy to realize the winding switching of the permanent magnet motor. At the same time, the above-mentioned connection method is applicable to all slot-pole matching motors and has good versatility.

[0024] In any of the above technical solutions, preferably, it also includes: a frequency converter, which is connected to the motor through a power supply circuit; and a winding switching switch, which is arranged on the power supply circuit.

[0025] In this technical solution, the frequency converter is connected to the power supply, and the frequency converter is connected to the motor through the power supply circuit and supplies power to the motor. In addition, the winding switching in the motor is realized by setting a winding switching switch, such as switching the star connection mode or the delta connection mode of the winding.

[0026] In any of the above technical solutions, preferably, it also includes: a first socket, the first lead wires of the multi-phase winding are respectively connected to the first socket, and the first socket is plugged into a plurality of first terminals; a second socket, the second lead wires of the multi-phase winding are respectively connected to the second socket, and the second socket is plugged into a plurality of second terminals.

[0027] In this technical solution, the first lead wire is first connected to the first socket, and then the first socket is inserted into the first terminal, so that the first lead wire and the first terminal can be stably and reliably connected. At the same time, the process of assembling the compressor is also simplified. The connection of multiple first lead wires and the first terminal can be achieved by directly inserting the socket into the terminal, which improves the manufacturing efficiency of the compressor and facilitates subsequent disassembly and maintenance.

[0028] The refrigeration equipment provided by the embodiment of the second aspect of the present invention includes: the compressor of the embodiment of the first aspect.

[0029] The refrigeration equipment provided by the present invention adopts the above-mentioned compressor, so that the wiring terminals and the motor phase sequence correspond reliably, thereby making the motor and the compressor have the advantage of high fault tolerance; in addition, the wiring method of the compressor has a simple structure, which is convenient for line connection, and is also conducive to winding switching of multi-phase motors with various slot-pole combinations, especially suitable for permanent magnet motors, which helps to achieve high energy efficiency of the compressor in the entire frequency band and improve the energy efficiency level of the refrigeration equipment.

[0030] The refrigeration equipment may be household appliances such as air conditioners or refrigerators.

[0031] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0033] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the present invention;

[0034] Figure 2 yes Figure 1 A schematic cross-sectional view of the motor in the structure shown;

[0035] Figure 3 yes Figure 1 Another schematic cross-sectional view of the motor in the illustrated structure;

[0036] Figure 4 is a top view of an embodiment of the present invention;

[0037] Figure 5 is a top view of another embodiment of the present invention;

[0038] Figure 6 is a connection diagram of motor windings in one embodiment of the present invention;

[0039] Figure 7 is a connection diagram of motor windings in another embodiment of the present invention;

[0040] Figure 8 is a top view of another embodiment of the present invention;

[0041] Fig. 9 It is a wiring diagram of a compressor in one embodiment of the present invention.

[0042] in, Figures 1 to 9 The corresponding relationship between the reference numerals and the component names is as follows:

[0043] 1 motor, 12 winding, 122 first lead wire, 124 second lead wire, 126 first connector, 128 second connector, 14 stator, 142 stator core, 16 rotor, 162 rotor core, 164 permanent magnet, 2 first terminal, 22 first terminal post, 3 second terminal, 32 second terminal post, 402 first socket, 404 second socket, 502 crankshaft, 504 main bearing, 506 cylinder, 508 piston, 510 secondary bearing, 512 exhaust pipe. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0046] Refer to the following Figures 1 to 9 A compressor and a refrigeration device according to some embodiments of the present invention are described.

[0047] like Figures 1 to 3 As shown, the present invention provides a compressor, including: a motor 1, the motor 1 includes a multi-phase winding 12, the winding 12 includes a first lead wire 122 and a second lead wire 124; a first terminal 2, the first terminal 2 is provided with a plurality of first terminals 22; a second terminal 3, the second terminal 3 is provided with a plurality of second terminals 32, and the distribution position of the second terminals 32 on the second terminal 3 is the same as the distribution position of the first terminals 22 on the first terminal 2; wherein the first lead wire 122 of the multi-phase winding 12 is respectively connected to the plurality of first terminals 22 according to a first connection sequence, and the second lead wire 124 of the multi-phase winding 12 is respectively connected to the plurality of second terminals 32 according to a second connection sequence.

[0048] The compressor provided by the present invention connects the first lead wire 122 and the second lead wire 124 of the multi-phase winding 12 to a plurality of first connecting posts and a second connecting post respectively according to a preset wiring sequence, so that the wiring terminals correspond reliably to the phase sequence of the motor 1, thereby making the motor 1 and the compressor have the advantage of high fault tolerance; in addition, the wiring method of the compressor has a simple structure, which is convenient for line connection, and is also conducive to winding switching of multi-phase motors with various slot-pole combinations, and is particularly suitable for permanent magnet motors.

[0049] In addition, if Figure 1As shown, the compressor also includes a compression part, which includes a crankshaft 502, a main bearing 504, a cylinder 506, a piston 508 and a secondary bearing 510, wherein the crankshaft 502 is connected to the rotor of the motor 1, and then the motor 1 rotates to drive the piston 508 to move to complete the compression of the gas. The compressor also includes an exhaust pipe 512, which can be used to discharge the gas.

[0050] like Figure 2 As shown, the motor 1 in the compressor is a three-phase motor, each phase winding 12 has two connectors, one connector in each of the three-phase windings 12 is connected to the first group of lead wires, another connector in the three-phase windings 12 is connected to the second group of lead wires, and another connector in the three-phase windings 12 is connected to the third group of lead wires. Similarly, each phase winding may include 2k (k=1, 2, 3...) connectors, which may be connected to each lead wire in the manner described in the above embodiments.

[0051] In one embodiment of the present invention, preferably, Figure 4 and Figure 5 As shown, the first wiring sequence is the same as or opposite to the second wiring sequence.

[0052] In this embodiment, when the first wiring sequence is the same as or opposite to the second wiring sequence, relevant personnel can understand the corresponding relationship between the second wiring terminal 3 and the phase sequence of the motor 1 after understanding the corresponding relationship between the first wiring terminal 2 and the phase sequence of the motor 1, which is convenient for the assemblers or maintenance personnel to assemble or disassemble the compressor, and can also play a certain fool-proofing role.

[0053] In one embodiment of the present invention, preferably, Figure 1 , Figure 4 , Figure 5 and Figure 8 As shown, the number of the first terminals 22 is equal to the number of the second terminals 32 .

[0054] In this embodiment, the number of the first terminals 22 is equal to the number of the second terminals 32 , so that the first terminals 2 and the second terminals 3 can respectively realize the same or opposite phase sequence correspondence with the motor 1 .

[0055] In one embodiment of the present invention, preferably, the number of the first terminals 22 is equal to the number of phases of the winding 12 .

[0056] In this embodiment, the number of the first terminals 22 is equal to the number of phases of the winding 12 , so that the winding 12 and the first terminals 22 can achieve a one-to-one phase sequence correspondence.

[0057] In one embodiment of the present invention, preferably, Figure 4 and Figure 5As shown, the number of the first terminals 22 is three, and the number of the second terminals 32 is three; or Figure 8 As shown, the number of the first connecting posts 22 is four, and the number of the second connecting posts 32 is four.

[0058] In this embodiment, when the number of the first terminals 22 is three and the number of the second terminals 32 is three, the corresponding connected motor 1 is a three-phase motor, and when the number of the first terminals 22 is four and the number of the second terminals 32 is four, the corresponding connected motor 1 is a four-phase motor. Generally, the number of terminals on the terminal corresponds to the number of phases of the motor. Furthermore, the number of terminals can also be two, five, six or more.

[0059] Among them, Figure 1 , Figure 2 , Figure 4 and Figure 5 In the structure shown, each terminal has three terminals, and the corresponding motor is a three-phase motor; Figure 8 In the structure shown, each terminal has four terminals, and the corresponding motor is a four-phase motor. Similarly, motors with different numbers of phases can be selected by adjusting the number of terminals.

[0060] In one embodiment of the present invention, preferably, Figure 2 As shown, the winding 12 includes: a plurality of coils connected in parallel, the coils include a first connector 126 and a second connector 128; wherein the plurality of first connectors 126 of the winding 12 are connected to the first lead wire 122, and the plurality of second connectors 128 of the winding 12 are connected to the second lead wire 124. Figure 2 Only the first connection 126 and the second connection 128 of one coil in each winding are shown.

[0061] In this embodiment, generally, the winding 12 may include a single coil, multiple coils connected in series, or multiple coils connected in parallel. When the winding 12 includes multiple coils connected in parallel, each coil includes a first connector 126 and a second connector 128. The first connector 126 of each coil in the same winding is connected to the first lead wire 122, and the second connector 128 is connected to the second lead wire 124, thereby achieving connection of multiple parallel coils in the winding to the terminal.

[0062] In one embodiment of the present invention, preferably, the number of coils connected in parallel in the winding is an odd number.

[0063] In this embodiment, the number of coils connected in parallel in the winding is an odd number. By connecting multiple coils in parallel in the same winding in the above-mentioned manner, each coil is connected to the terminal, thereby realizing winding switching for a motor with an odd number of coils in each phase winding.

[0064] In one embodiment of the present invention, preferably, the motor has m-phase windings (m≥2), each phase winding has 2k connectors (k=1, 2, 3...), and is divided into two groups. The k connectors of the first phase winding are connected to the first lead wire, and the other k connectors are connected to the second lead wire; the k connectors of the second phase winding are connected to the third lead wire, and the other k connectors are connected to the fourth lead wire; and so on, the k connectors of the m-th phase winding are connected to the 2m-1th lead wire, and the other k winding connectors are connected to the m-th lead wire. The compressor includes two terminals, each terminal having m terminals. Among them, the 1st lead wire connected to the first phase, the 3rd lead wire connected to the second phase..., up to the 2m-1th lead wire connected to the mth phase, are respectively connected to the m terminals of the first terminal, and the positions of the terminals are arranged according to the first phase sequence of the winding; the 2nd lead wire connected to the first phase, the 4th lead wire connected to the second phase..., up to the 2mth lead wire connected to the mth phase, are respectively connected to the m terminals of the second terminal, and the positions of the terminals are arranged according to the second phase sequence of the winding.

[0065] In this embodiment, the wiring structure is simple, and the winding switching of the drive motor is easy to realize, and it is applicable to all slot-pole matching motors, and has a wide range of applicability. Further, in this embodiment, the positions of the terminal are arranged in a certain phase sequence, so that the compressor has high reliability from manufacturing to use.

[0066] If the first phase sequence arrangement is the same as the second phase sequence arrangement, the following can be formed: Figure 4 The structure shown. Figure 4 In the structure shown, the two terminals each have three terminals, and the phase sequence of the lead wires connected to the terminals of the first terminal is the same as that of the second terminal. The terminals on the first terminal are connected to the first lead wire (A1) of the motor phase A, the first lead wire (B1) of the motor phase B, and the first lead wire (C1) of the motor phase C in a counterclockwise direction; the terminals on the second terminal are connected to the second lead wire (A2) of the motor phase A, the second lead wire (B2) of the motor phase B, and the second lead wire (C2) of the motor phase C in a counterclockwise direction. Similarly, the terminals of the above two groups of terminals can also be connected to each phase winding in sequence in a clockwise direction.

[0067] If the first phase sequence arrangement is opposite to the second phase sequence arrangement, the following can be formed: Figure 5 The structure shown. Figure 5In the structure shown, the two terminals each have three terminals, and the phase sequence of the lead wires connected to the terminals of the first terminal is different (opposite) from that of the second terminal. The terminals on the first terminal are connected to the first lead wire (A1) of the motor phase A, the first lead wire (B1) of the motor phase B, and the first lead wire (C1) of the motor phase C in a counterclockwise direction. The terminals on the second terminal are connected to the second lead wire (A2) of the motor phase A, the second lead wire (B2) of the motor phase B, and the second lead wire (C2) of the motor phase C in a clockwise direction. Similarly, the order of the two groups of terminals can also be set in the opposite direction.

[0068] In one embodiment of the present invention, preferably, Figure 3 As shown, the motor 1 is a permanent magnet motor, and the motor 1 includes a stator 14 and a rotor 16. The stator 14 has a stator core 142 and a winding 12. The winding 12 has a connector (such as a first connector 126) for connecting with a lead wire. The rotor 16 has a rotor core 162 and a permanent magnet 164. The permanent magnet 164 is arranged in a permanent magnet slot on the rotor core 162. Figure 3 In the structure shown, the permanent magnet motor adopts a 9-slot 6-pole structure, each phase has 3 coils, and the 3 coils of each phase winding are connected in series. Thus, each phase winding 12 has two connectors, which are connected to the corresponding lead wires. For full explanation, further, assuming that the 3 coils of each phase winding of the 9-slot 6-pole motor are arranged in parallel, each phase winding will have 6 connectors, divided into two groups, of which 3 connectors (equivalent to the first connector) are connected to a lead wire, and the other 3 connectors (equivalent to the second connector) are connected to another lead wire, and then the lead wire is connected to the terminal, so that the above-mentioned connection method can be applied to the permanent magnet motor with an odd number of coils connected in parallel in each phase winding, so as to realize the wider application of the connection method in the above-mentioned embodiment, and further prove the applicability and rationality of the technical solution of the present invention.

[0069] In one embodiment of the present invention, Figure 6 As shown, in a three-phase motor, under low speed conditions, the motor winding 12 adopts a star connection mode, wherein each coil of each phase winding 12 is connected in series; under high speed conditions, such as Figure 7 As shown, the winding 12 of the motor adopts a triangle connection mode, wherein each coil of each phase winding 12 is connected in series. The switching between the star connection and the triangle connection can be realized by an external switching switch.

[0070] In one embodiment of the present invention, preferably, the motor 1 is a permanent magnet motor.

[0071] In this embodiment, the motor 1 in the compressor is a permanent magnet motor. By adopting the above-mentioned connection method, it is easy to realize the winding switching of the permanent magnet motor. At the same time, the above-mentioned connection method is applicable to all slot-pole matching motors and has good versatility.

[0072] In one embodiment of the present invention, preferably, Fig. 9 As shown, it also includes: a frequency converter, which is connected to the motor through a power supply circuit; and a winding switching switch, which is arranged on the power supply circuit.

[0073] In this embodiment, the frequency converter is connected to the power supply, and the frequency converter is connected to the motor through the power supply circuit and supplies power to the motor. In addition, the winding switching in the motor is realized by setting a winding switching switch, such as switching the star connection mode or the delta connection mode of the winding.

[0074] Specifically, the motor is powered by a frequency converter, and switches S1 to S6 are provided in the circuit. When running at low speed, S1 to S3 are turned on, connecting the three circuits of A2, B2, and C2, S4 to S6 are turned off, shutting off the three circuits of A1, B1, and C1, and the motor runs in a star connection state; when running at high speed, S1 to S3 are turned off, shutting off the three circuits of A2, B2, and C2, S4 to S6 are turned on, shutting on the three circuits of A1, B1, and C1, and the motor runs in a triangle connection state. By controlling the program instructions, the switch is turned on or off, thereby realizing the star-to-delta conversion of the motor and improving the energy efficiency level of the compressor.

[0075] In one embodiment of the present invention, preferably, Figure 1 and Figure 2 As shown, it also includes: a first socket 402, the first lead wires 122 of the multi-phase winding 12 are respectively connected to the first sockets 402, and the first sockets 402 are inserted into multiple first terminals 22; a second socket 404, the second lead wires 124 of the multi-phase winding 12 are respectively connected to the second sockets 404, and the second sockets 404 are inserted into multiple second terminals 32.

[0076] In this embodiment, the first lead wire 122 is first connected to the first socket 402, and then the first socket 402 is inserted into the first terminal 2, so that the first lead wire 122 and the first terminal 2 can be stably and reliably connected, and the process of assembling the compressor is also simplified. The connection between multiple first lead wires 122 and the first terminal 2 can be achieved by directly inserting the socket into the terminal, which improves the manufacturing efficiency of the compressor and facilitates subsequent disassembly and maintenance.

[0077] The present invention also provides a refrigeration device, comprising: a compressor according to the embodiment of the first aspect.

[0078] The refrigeration equipment provided by the present invention adopts the above-mentioned compressor, so that the wiring terminals and the motor phase sequence correspond reliably, thereby making the motor and the compressor have the advantage of high fault tolerance; in addition, the wiring method of the compressor has a simple structure, which is convenient for line connection, and is also conducive to winding switching of multi-phase motors with various slot-pole combinations, especially suitable for permanent magnet motors, which helps to achieve high energy efficiency of the compressor in the entire frequency band and improve the energy efficiency level of the refrigeration equipment.

[0079] The refrigeration equipment may be household appliances such as air conditioners or refrigerators.

[0080] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0081] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation 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.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compressor, It is characterized in that include: A motor, the motor comprising a multi-phase winding, the winding comprising a first lead wire and a second lead wire; A first wiring terminal, wherein a plurality of first wiring posts are disposed on the first wiring terminal; A second terminal, wherein a plurality of second terminals are disposed on the second terminal, and the distribution positions of the second terminals on the second terminal are the same as the distribution positions of the first terminals on the first terminal; Wherein, the first lead wires of the multi-phase windings are respectively connected to the plurality of the first terminals according to a first connection sequence, and the second lead wires of the multi-phase windings are respectively connected to the plurality of the second terminals according to a second connection sequence; The number of the first binding posts is equal to the number of the second binding posts; The number of the first terminals is equal to the number of phases of the winding, and the winding corresponds to the first terminals one by one; A first socket, to which first lead wires of the multi-phase windings are respectively connected, and the first socket is plugged into a plurality of the first binding posts; A second socket, to which the second lead wires of the multi-phase windings are respectively connected, and the second socket is plugged into a plurality of the second binding posts; The first wiring sequence is the same as or opposite to the second wiring sequence; A frequency converter, the frequency converter being connected to the motor via a power supply circuit; A winding switching switch, arranged on the power supply circuit, the winding switching switch is used to switch the connection mode of the winding, the connection mode including a star connection mode and a delta connection mode; The winding comprises: A plurality of coils connected in parallel, each coil comprising a first connection and a second connection; Wherein, a plurality of first connectors of the winding are connected to the first lead wire, and a plurality of second connectors of the winding are connected to the second lead wire.

2. The compressor according to claim 1, It is characterized in that The number of the first binding posts is three, and the number of the second binding posts is three; or The number of the first binding posts is four, and the number of the second binding posts is four.

3. The compressor according to claim 1 or 2, It is characterized in that The number of coils connected in parallel in the winding is an odd number.

4. The compressor according to claim 1 or 2, It is characterized in that The motor is a permanent magnet motor.

5. A refrigeration device, It is characterized in that include: A compressor as claimed in any one of claims 1 to 4.

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