AC permanent magnet synchronous motor

Abstract

The utility model discloses an alternating current permanent magnet synchronous motor, which comprises a support, a motor structure and a shell, the motor structure and the shell are fixed on the support, and the motor structure comprises a motor shell, a stator silicon steel sheet arranged in the motor shell and a rotor silicon steel sheet arranged in the stator silicon steel sheet; permanent magnets are arranged between the stator silicon steel sheets and the rotor silicon steel sheets; the center of the rotor silicon steel sheet is connected with a shaft rod through a bearing. Two ends of the motor housing are provided with a motor end cover and a positioning card. A motor driving circuit board is arranged between the shell and the motor shell, and three coding switches are fixed on the side part of the motor driving circuit board; the coding switch is a nine-gear coding switch. The fan coil control device is reasonable in structural arrangement, 27-gear adjustment can be achieved through cooperation of the three nine-gear coding switches, the fan coil control device can be matched with more types of fan coils for use, the application range of the fan coil control device is more convenient to improve, the surge attenuator is further arranged, surge can be effectively restrained, and the service life of the fan coil control device matched with a temperature controller can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to an AC permanent magnet synchronous motor. Background Art

[0002] The existing AC asynchronous motors used in fan coil units have low efficiency, small torque, low speed and only three gears of speed regulation, which makes it difficult to match different fan coil units. In addition, although the existing AC permanent magnet synchronous motors on the market can be adjusted, they mostly only have three gears of adjustment: low speed, medium speed and high speed. Their adjustment functions are very limited, their scope of application is restricted, and their energy-saving effects are very limited, making it difficult to meet market demand. Summary of the invention

[0003] The utility model aims to provide an AC permanent magnet synchronous motor which has a reasonable structure and is conducive to improving the application range.

[0004] The technical solution to achieve the purpose of the utility model is an AC permanent magnet synchronous motor, comprising a bracket, a motor structure and a housing fixed on the bracket, wherein the motor structure comprises a motor housing, a stator silicon steel sheet arranged in the motor housing, and a rotor silicon steel sheet arranged in the stator silicon steel sheet;

[0005] A permanent magnet is arranged between the stator silicon steel sheet and the rotor silicon steel sheet;

[0006] A shaft connected to the rotor silicon steel sheet is disposed at the center thereof through a bearing, and motor end covers and positioning cards are disposed at both ends of the motor housing;

[0007] The shaft rod is arranged through the motor end cover and the positioning card;

[0008] A motor drive circuit board is arranged between the housing and the motor casing, and three coding switches are fixed on the side of the motor drive circuit board;

[0009] The coding switch is a nine-gear coding switch.

[0010] Further preferably, a surge attenuator is provided on the motor drive circuit board.

[0011] Further preferably, a threading hole is provided on the top of the motor housing, and a wire outlet rubber ring is provided at the threading hole;

[0012] The motor drive circuit board is connected to the wires of the motor structure through the wire threading holes.

[0013] Further preferably, a metal hose is fixed to the side of the shell.

[0014] Further preferably, a paper gasket is provided between the motor housing and the motor end cover.

[0015] More preferably, the permanent magnet is a neodymium iron boron magnet.

[0016] The utility model has positive effects: the structure of the utility model is reasonable, and it can achieve 27 gear adjustments through the cooperation of three nine-gear coding switches, which can match more types of fan coil units, which is beneficial to improving its application range, and it is also provided with a surge attenuator, which can effectively suppress the surge current, which is beneficial to improving the service life of the matched thermostat, and has strong applicability and good practicality;

[0017] At the same time, the motor drive circuit board is equipped with a power factor adjustment circuit that can reach 99%, thereby increasing its scope of application and international market, meeting the use requirements in different situations, and its wide operating voltage range is conducive to improving the efficiency of the entire machine, and it is equipped with static electricity elimination technology, which can effectively protect the bearing life and thus increase the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the nine-gear coding switch in the utility model.

[0021] Figure numerals: bracket 1, motor structure 2, motor housing 21, stator silicon steel sheet 22, rotor silicon steel sheet 23, permanent magnet 24, housing 3, bearing 4, shaft 5, motor end cover 6, positioning card 7, motor drive circuit board 8, coding switch 9, threading hole 10, metal hose 11, paper gasket 12. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0023] See Figure 1 to Figure 2As shown, an AC permanent magnet synchronous motor includes a bracket 1, a motor structure 2 fixed on the bracket and a housing 3. In this embodiment, the bracket and the housing are conventional structures in the prior art, and the housing is mainly used to protect the motor drive circuit board, and the motor drive circuit board is connected to the motor structure.

[0024] In actual application, the motor structure includes a motor housing 21, a stator silicon steel sheet 22 disposed in the motor housing, and a rotor silicon steel sheet 23 disposed in the stator silicon steel sheet; a permanent magnet 24 is disposed between the stator silicon steel sheet and the rotor silicon steel sheet; in this embodiment, the permanent magnet is a neodymium iron boron magnet. Thus, a strong magnetic field is generated without the need for additional energy, the efficiency of the entire motor is improved, the practicability is strong, and it is also conducive to saving energy.

[0025] In actual application, a shaft rod 5 connected by a bearing 4 is arranged at the center of the rotor silicon steel sheet, and motor end covers 6 and positioning cards 7 are arranged at both ends of the motor housing; the shaft rod is passed through the motor end covers and the positioning cards; in this embodiment, the motor end covers and the positioning cards are conventional structures of the prior art and are simply applied.

[0026] Meanwhile, a motor drive circuit board 8 is arranged between the housing and the motor housing, and three coding switches 9 are fixed on the side of the motor drive circuit board; the coding switch is a nine-speed coding switch. The nine-speed coding switch is connected to a chip arranged inside. In this embodiment, by setting three nine-speed coding switches, a total of 27 gear adjustments can be achieved, which can match more types of fan coil units and improve the range.

[0027] At the same time, in this embodiment, a surge attenuator is provided on the motor drive circuit board, which can control the surge of the whole machine to below 1.5A, which is beneficial to prolonging the service life of the matching thermostat, and has strong applicability and good practicality.

[0028] In actual application, a threading hole 10 is provided on the top of the motor housing, and a wire outlet rubber ring is provided at the threading hole; the motor drive circuit board and the wires of the motor structure are connected through the threading hole, which can improve the effectiveness and convenience of the connection and has strong practicality.

[0029] In actual application, a metal hose 11 is fixed to the side of the housing. A paper gasket 12 is arranged between the motor housing and the motor end cover. This is beneficial to improving the static electricity removal performance, thereby improving the stability and reliability of the shaft and bearing.

[0030] The utility model has positive effects: the structure of the utility model is reasonable, and it can achieve 27 gear adjustments through the cooperation of three nine-gear coding switches, which can match more types of fan coil units, which is beneficial to improving its application range, and it is also provided with a surge attenuator, which can effectively suppress the surge current, which is beneficial to improving the service life of the matched thermostat, and has strong applicability and good practicality;

[0031] At the same time, the motor drive circuit board is equipped with a power factor adjustment circuit that can reach 99%, thereby increasing its scope of application and international market, meeting the use requirements in different situations, and its wide operating voltage range is conducive to improving the efficiency of the entire machine, and it is equipped with static electricity elimination technology, which can effectively protect the bearing life and thus increase the service life of the motor.

[0032] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification can also be directly processed according to existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims

1. An AC permanent magnet synchronous motor, comprising a bracket, a motor structure fixed on the bracket and a housing, characterized in that: The motor structure comprises a motor housing, a stator silicon steel sheet arranged in the motor housing, and a rotor silicon steel sheet arranged in the stator silicon steel sheet; A permanent magnet is arranged between the stator silicon steel sheet and the rotor silicon steel sheet; A shaft connected to the rotor silicon steel sheet is disposed at the center thereof through a bearing, and motor end covers and positioning cards are disposed at both ends of the motor housing; The shaft rod is arranged through the motor end cover and the positioning card; A motor drive circuit board is arranged between the housing and the motor casing, and three coding switches are fixed on the side of the motor drive circuit board; The coding switch is a nine-gear coding switch.

2. The AC permanent magnet synchronous motor according to claim 1, characterized in that: A surge attenuator is arranged on the motor drive circuit board.

3. The AC permanent magnet synchronous motor according to claim 2, characterized in that: A threading hole is provided on the top of the motor housing, and a wire outlet rubber ring is provided at the threading hole; The motor drive circuit board is connected to the wires of the motor structure through the wire threading holes.

4. The AC permanent magnet synchronous motor according to claim 3, characterized in that: A metal hose is fixed on the side of the shell.

5. The AC permanent magnet synchronous motor according to claim 1, characterized in that: A paper gasket is arranged between the motor housing and the motor end cover.

6. The AC permanent magnet synchronous motor according to claim 1, characterized in that: The permanent magnet is neodymium iron boron magnetic steel.

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