WO2010054539A1

WO2010054539A1 - Air conditioner

Info

Publication number: WO2010054539A1
Application number: PCT/CN2009/070459
Authority: WO
Inventors: 徐继鸿; 吴金华; 赵少俊
Original assignee: 鹤山市鹤龙机电有限公司
Priority date: 2008-11-17
Filing date: 2009-02-18
Publication date: 2010-05-20
Also published as: CN101403514A

Abstract

An air conditioner includes an electric control system (1), a refrigeration system (2) and an air supply system (3). The air supply system (3) is disposed with an air blower (4), in which there are disposed a drive motor (5) and air supply blades (6). The air conditioner is characterized in that the drive motor (5) is a permanent magnet brushless DC motor with few slots and few poles, and the mounting structure of the motor is provided with 9 slots of stator and 10 poles of rotor.

Description

[1] Technical field

[2] The present invention relates to an air conditioning system, and more particularly to an improved air conditioning system involving a blower.

[3] Background Art

[4] With the diminishing energy resources, energy conservation and emission reduction have become the trend of the times. Many products have been upgraded with high efficiency and low energy consumption. Among them, the air conditioning system with a large amount has become an improvement object.

[5] As a necessary and frequently operated mechanism, air-supply motors in air-conditioning systems are the research direction of developers to reduce their production costs and improve their work efficiency. At present, the drive motor of the blower is generally a multi-slot multi-pole structure, which has a complicated structure and a large volume, and the manufacturing cost cannot be effectively reduced, and the use efficiency cannot be effectively improved.

[6] In addition, the relatively simple structure of the small slot and the low pole has been used only in small and micro motors with a power of less than 500W, as published in December 2006, Vol. 26, No. 24, "China Motors" In the Journal of Engineering, in the article "Study on Vibration and Noise of Small Brushless DC Motors", the design of a small brushless DC motor is described. The stator is often used with a 9-slot structure. The number of poles of a permanent magnet rotor can be considered. Pole, 8-pole, 10-pole, 12-pole structure. In the article, Tongfang pointed out that the motor with less slot and less pole structure has the disadvantage of large radial electromagnetic force, resulting in large vibration and high noise. It is generally considered that if the structure is used on a high-power motor, the disadvantage is more obvious. As can be seen from the above, the high-power motor is usually a multi-slot multi-pole structure with relatively complicated structure, and the structure with relatively simple structure is generally only used on small and micro motors, and is not used and tried on high-power motors. .

[7] Due to the above-mentioned technical prejudice, until now, the small-slot and low-pole structure has not appeared in the design and manufacture of a large-power permanent magnet motor, and has not been used in a blower for an air-conditioning system.

[8] Summary of the invention

[9] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide an air conditioning system which has a reasonable structure, can effectively reduce manufacturing costs, is energy-saving and consumes, and has a good use effect.

[10] The technical solution adopted by the present invention to solve the technical problems thereof is: [11] The air conditioning system comprises an electric control system, a refrigeration system and a supply air system, and the air supply system has a blower, and the blower is provided with a drive motor and a supply fan, wherein the drive motor is a permanent magnet brushless DC The motor, the permanent magnet brushless DC motor has a small groove and a small pole structure, and the mounting structure of the motor is an outer rotor or an inner rotor.

[12] Further, as a preferred embodiment, the motor structure is a stator 9 slot and a rotor 8 pole.

[13] Further, the motor structure may also be a stator 9 slot and a rotor 10 pole.

[14] Further, the stator straight grooves have the same groove shape and are evenly distributed; the rotor magnets are embedded in the rotor, arranged radially or tangentially. Further, the rotor permanent magnet is rectangular. Further, the two-way air gap between the stator and the rotor is 1.2 to 2.2 mm.

[15] The beneficial effects of the present invention are: The driving motor of the air blower of the air conditioning system is a permanent magnet brushless DC motor, and the permanent magnet brushless DC motor has a small groove and a small pole structure, due to the use of an innovative motor structure and magnetic The road structure overcomes the existing technical defects, has the characteristics of high power density, simple structure and small volume, and has stable operation, small vibration and low noise, thereby effectively reducing the production cost and the use cost of the air conditioning system, and adapting to the energy saving of today's society. Demand for emission reduction.

[16] BRIEF DESCRIPTION OF THE DRAWINGS

[17] The invention will now be further described with reference to the drawings and embodiments.

1 is a schematic structural view of a system of the present invention;

2 is a schematic structural view of a 9-slot 8-pole structure of a driving motor of the air conditioning system of the present invention;

[20] FIG. 3 is a schematic structural view of a 9-slot 10-pole structure of a driving motor of the air conditioning system of the present invention;

Figure 4 is a winding diagram of the stator winding of the present invention.

[22] Specific implementation

[23] Referring to Fig. 1, an air conditioning system of the present invention includes an electronic control system 1, a refrigeration system 2, and a blower system 3, and a blower 4 is provided on the air supply system 3, and a drive motor 5 and a blower blade 6 are disposed in the blower 4. As shown in FIG. 2 and FIG. 3, the driving motor 5 is a permanent magnet brushless DC motor, and the permanent magnet brushless DC motor has a small slot and a small pole structure, and the mounting structure of the motor is an outer rotor or an inner rotor. The utility model has the advantages of simple structure, low manufacturing cost, high power density, obvious energy saving and small volume.

[24] Specifically, the stator 51 shown in FIG. 2 has 9 slots, and the rotor 52 has an 8-pole drive motor. Alternatively, the stator 51 shown in FIG. 3 has 9 slots, and the rotor 52 is 10-pole drive motor structure, the above junction The constructed motors all have good electromagnetic torque characteristics.

[25] Further, as a preferred embodiment, the stator straight grooves have the same groove shape and are uniformly distributed; the rotor magnets 53 are embedded in the rotor, arranged radially or tangentially.

[26] Further, referring to Fig. 4, the stator windings are three-phase, three-phase three-group windings 120. arrangement.

[27] Further, the two-way air gap between the stator and the rotor is 1.2 to 2.2 mm.

[28] As a preferred embodiment, the number of turns of the stator turns is determined in accordance with the actual operating speed and torque, and the back EMF voltage that is compatible with the external controller voltage of the motor.

[29] The invention is characterized in that the driving motor of the air blower of the air conditioning system uses a permanent magnet brushless DC high torque motor, which has the advantages of a small groove and a small pole structure, and has outstanding advantages such as high power density and large torque, and The simple structure, the weight and volume of the whole machine, the low energy consumption and the high efficiency make the air conditioning system using the motor have the advantages of energy saving, high efficiency, high reliability, and effective cost reduction.

[30] Of course, in addition to the above embodiments, the present invention should also be within the scope of its protection.

Claims

Claim

[1] The air conditioning system includes an electronic control system, a refrigeration system and a supply air system, and a blower is provided on the air supply system, and the drive motor and the air supply blade are provided in the blower, wherein the drive motor is a permanent magnet brushless DC The motor, the permanent magnet brushless DC motor has a small groove and a small pole structure, and the mounting structure of the motor is an outer rotor or an inner rotor.

[2] The air conditioning system according to claim 1, wherein: the motor structure is a stator 9 slot and a rotor 8 pole.

[3] The air conditioning system according to claim 1, wherein the motor structure is a stator 9 slot and a rotor 10 pole.

[4] The air conditioning system according to claim 1, 2 or 3, characterized in that:

The stator straight groove has the same groove shape and is evenly distributed;

The rotor magnets are embedded in the rotor and arranged radially or tangentially.

[5] The air conditioning system according to claim 1, 2 or 3, wherein: said permanent magnet of said rotor is rectangular.

[6] The air conditioning system according to claim 1, 2 or 3, characterized in that: said stator winding is a three-phase, three-phase three-group winding 120. arrangement.

[7] The air conditioning system according to claim 1, 2 or 3, characterized in that: the bidirectional air gap between the stator and the rotor is 1.2 to 2.2 mm.

[8] The air conditioning system according to claim 1, 2 or 3, characterized in that: the stator winding is determined according to the actual working speed and torque, and the back EMF voltage adapted to the external controller voltage of the motor. number.