WO2009000162A1 - A refrigerant compressor - Google Patents

A refrigerant compressor Download PDF

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Publication number
WO2009000162A1
WO2009000162A1 PCT/CN2008/001234 CN2008001234W WO2009000162A1 WO 2009000162 A1 WO2009000162 A1 WO 2009000162A1 CN 2008001234 W CN2008001234 W CN 2008001234W WO 2009000162 A1 WO2009000162 A1 WO 2009000162A1
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WO
WIPO (PCT)
Prior art keywords
rotor
motor
rotating body
metal conductive
compressor according
Prior art date
Application number
PCT/CN2008/001234
Other languages
French (fr)
Chinese (zh)
Inventor
Shizheng He
Tianfa Song
Manyau Cheung
Original Assignee
Shizheng He
Tianfa Song
Manyau Cheung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shizheng He, Tianfa Song, Manyau Cheung filed Critical Shizheng He
Publication of WO2009000162A1 publication Critical patent/WO2009000162A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/04—Balancing means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H02K1/246—Variable reluctance rotors

Definitions

  • the present invention is a compression device, particularly a compressor for a refrigeration device such as a refrigerator, a cold storage or an air conditioner. Background technique
  • the technical problem to be solved by the present invention is to provide a refrigeration compressor which is simple in structure, high in energy efficiency and energy-saving.
  • the technical solution to solve the above problem is (see the embodiment diagram):
  • the present invention is provided with a motor (1), a compression pump (2) connected to the motor drive shaft (7), and a gas-liquid separator connected to the compression pump. (12)
  • the motor and the compression pump are sealed in the casing (14), wherein: the motor (1) is a switched reluctance motor, and the stator (3) has a coil (5) on the salient pole thereof.
  • the rotor (6) is an outer salient pole structure, and the rotor is provided with a rotor phase sensor (8, 9) made of a high temperature resistant high pressure material, and the rotor phase sensor is connected to the main control driving circuit.
  • the material for making the rotor phase sensor is resistant to high temperature and high pressure, and is capable of withstanding a working pressure of 18 to 30 atmospheres in a pressure vessel of a conventional refrigeration compressor, and an operating temperature of 90 to 120 ° C.
  • the rotor phase sensor has the following structure: a phase signal rotating body (8) fixed to the motor drive shaft (7), and the rotating surface of the rotating body is provided with the same number of salient poles as the rotor And the metal conductive region (10) uniformly distributed in the circumferential direction, between the adjacent metal conductive regions is absolutely
  • the edge material region (11) is provided with an electrode holder (9), and the electrode holder is provided with a carbon brush electrode which can slidably touch the rotating surface of the phase signal rotating body.
  • a balance block (13) made of a non-conductive, non-magnetic material is embedded between the circumferential convex poles of the rotor (6), so that the convex pole rotor (6) It has a cylindrical shape.
  • the invention adopts an advanced switched reluctance motor as a driving device of the refrigeration compressor, and has the advantages of simple and compact structure, high efficiency and energy saving.
  • the rotor phase sensor adopted by the further solution can overcome the shortcomings of the commonly used photoelectric sensors such as photoelectric, optical fiber and Hall, which cannot withstand the high temperature and high pressure working conditions in the high pressure container, and is in the range of 18-30 atmospheres and 90°-120°C. Under working conditions.
  • the metal conductive area on the rotating body and the carbon brush electrode of the touch rotating body can maintain normal operation.
  • the rotor adopts a cylindrical structure, which can overcome the problem that the rotor salient pole rotates in the high pressure container to generate a large resistance, and improves the balance of the rotation of the rotor.
  • Figure 1 is a schematic view showing the structure of an embodiment of the present invention
  • Figure 2 shows the D-D structure
  • FIG. 3 is a schematic diagram showing the E-direction structure of the phase signal rotating body 8 of the embodiment of FIG.
  • FIG. 4 Schematic diagram of the structure of the compressor of the present invention using a two-phase switched reluctance motor
  • Figure 5 is a schematic view showing the structure of a four-phase switched reluctance motor of the compressor of the present invention
  • the refrigeration compressor of this example uses a permanent magnet type switched reluctance motor as a driving device.
  • the specific structure is as follows:
  • the casing 14 is a cylindrical pressure vessel made of A3 steel plate, and a lower portion of the inner cavity of the cylindrical casing is provided with a compression pump 2, and the compression pump is connected to the main shaft 7 of the motor mounted at the upper portion thereof, and is externally connected with the gas.
  • the liquid separator 12 is connected.
  • the motor 1 is a three-phase permanent magnet switched reluctance motor, see Fig. 2, the stator 3 is laminated with ordinary silicon steel sheets, and has six inner salient poles, and the salient poles are all equipped with an enameled wire wound drive. Winding 5, connected by A-A', B-B', CC, symmetrical connection, series or parallel, the stator is equipped with two high magnetic energy products of linear demagnetization curve made of rare earth neodymium NdFeB permanent magnet material. Permanent magnet, two permanent magnets 4 are symmetrically mounted 180 degrees apart on the stator.
  • the purpose of installing the permanent magnet 4 is: From the viewpoint of energy conversion, the conventional switched reluctance motor can only achieve half of the utilization rate, because the direction of the electromagnetic torque is determined by the rate of change of the winding inductance with the rotation angle, irrespective of the current.
  • the forward driving torque is generated when the current is applied during the rising period of the inductor; the braking torque is generated when the current is passed during the falling period of the inductor, so that at least one half cycle is utilized in one switching cycle of the stator winding, in order to avoid
  • the braking torque is generated in the falling region of the inductor, and the turning angle of the winding current has to be advanced more than the maximum inductance position, and half of the cycle is not fully utilized, thereby causing the problem of commutation and low relative material utilization.
  • a permanent magnetic material is pre-generated in the stator of the motor to establish a magnetic field.
  • the magnetic field generated by the permanent magnet interacts with the magnetic field generated by the winding current, so that the positive inductance region can also be generated.
  • the torque is applied, thereby greatly improving the performance of the permanent magnet switched reluctance motor.
  • the rotor 6 is laminated with a silicon steel sheet into a 4 salient pole structure, and a rotor balance block 13 made of a non-conductive, non-magnetic, bakelite or epoxy board is embedded between the four salient poles in the circumferential direction.
  • the rotor 6 is formed in a cylindrical shape, so that the rotor is rotated more balanced and smooth, and the resistance of the rotor when rotating in the pressure vessel is reduced.
  • the driving of the switched reluctance motor requires a control signal command, and the control signal command is mainly issued according to the phase signal of the rotor. Therefore, the switched reluctance motor is provided with a phase signal sensor for detecting the rotation angle of the rotor, such as photoelectric, optical fiber, and Hall.
  • the invented switched reluctance motor is used in a high temperature pressure vessel, wherein the working pressure can reach 18-30 atmospheres, and the working temperature can reach 90° - 120 ° C, so the aforementioned sensor cannot guarantee the reliability of the work.
  • the phase signal sensor structure for detecting the rotation angle of the rotor in this example is as follows:
  • the phase signal on the shaft turns the rotating body 8, and the rotating surface of the rotating body is provided with a metal conductive region 10 having the same number of salient poles as the rotor and uniformly distributed in the circumferential direction, and an insulating material region 11 between adjacent metal conducting regions, the shell
  • the electrode holder 9 is arranged in the body, and the electrode holder is provided with a carbon brush electrode which can slidably touch the rotating surface of the phase signal rotating body.
  • the phase signal rotating body 8 has a disk shape, and the metal conductive region 10 which is uniformly distributed in the circumferential direction is provided on the disk surface of the disk made of an insulating material.
  • the metal conductive regions respectively have a sector of 360 degrees/2 ⁇ angle
  • the disc-shaped rotating body 8 is mounted on the upper part of the motor main shaft
  • the brush provided on the electrode holder 9 is slidingly matched with the disc surface provided with the metal conductive area. Touch the brush connection.
  • the rotor 6 is provided with four salient poles, so that the sector-shaped metal conductive region on the disk surface of the phase signal rotating body 8 is at an angle of 45 degrees, and the disc-shaped rotating body is made of electric wood, and the sector-shaped metal conductive region on the disk surface Made of copper plate.
  • the switched reluctance drive motor used in the compressor of the invention is a three-phase motor, and two-phase, four-phase and more different phase numbers of motors can also be used.
  • FIG. 4 is a two-phase switched reluctance drive motor which can be used in the present invention.
  • 5 is a four-phase switched reluctance drive motor that can be used in the present invention.
  • the drive system power converter is the energy supplier of the permanent magnet switched reluctance motor.
  • the main circuit adopts a split-phase electronic drive circuit, which is powered by a symmetrical power supply, has no impact on the power grid, and is energy efficient.
  • the refrigeration compressor using the switched reluctance motor has the advantages of simple structure, reliable operation, energy saving, and high efficiency in the speed regulation range.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

A refrigerant compressor is provided with an electric motor (1), a compression pump (2) operatively connecting with a driving shaft (7) of the electric motor, and a gas-liquid separator (12) communicating with the compression pump (2). Said electric motor (1) and said compression pump (2) are sealed in a casing (14). Said electric motor (1) is a switched reluctance motor, whose stator (3) is equipped with coils (5) on its salient poles and whose rotor (6) is an outer salient pole structure. A rotor phase sensor (8, 9) which is made of a resistant high-temperature and high-pressure material is provided in said casing (14) and connects with a main control drive circuit.

Description

一种制冷压缩机 技术领域  Refrigeration compressor
本发明属一种压缩装置， 特别是用于冰箱、 冷库或空调等制冷装置的压 縮机。 背景技术  The present invention is a compression device, particularly a compressor for a refrigeration device such as a refrigerator, a cold storage or an air conditioner. Background technique
现有空调、 冰箱、 冷库存之类的制冷装置多采用常规的单相、 三相电动 机或直流电动机作为压力容器的驱动装置。 这类电动机存在启动电流大， 对 电网冲击力大， 起动困难， 启动力矩不理想， 功率因素低和调速困难等缺点， 其启动电流约为额定电流的 5-6倍。 发明内容  Existing refrigeration devices such as air conditioners, refrigerators, and cold storages often use conventional single-phase, three-phase motors or DC motors as the driving device for the pressure vessel. Such motors have the disadvantages of large starting current, large impact on the power grid, difficulty in starting, unsatisfactory starting torque, low power factor and difficulty in speed regulation. The starting current is about 5-6 times of the rated current. Summary of the invention
本发明要解决的技术问题是提供一种结构简单、高效节能的制冷压缩机。 解决上述问题的技术方案是（参见实施例图）： 本发明设有电机（1 )， 与 电机驱动轴（7)传动连接的压縮泵（2)， 与压縮泵连通的气液分离器（12)， 所述的电机和压缩泵密封在机壳（14) 内， 其特征在于： 所述的电机（1 ) 是 开关磁阻电机， 其定子 （3 ) 凸极上装有线圈 （5 )、 其转子 （6) 为外凸极结 构， 所述的机壳内设有由耐高温高压材料制成的转子相位传感器（8， 9)， 转 子相位传感器与主控驱动电路连接。  The technical problem to be solved by the present invention is to provide a refrigeration compressor which is simple in structure, high in energy efficiency and energy-saving. The technical solution to solve the above problem is (see the embodiment diagram): The present invention is provided with a motor (1), a compression pump (2) connected to the motor drive shaft (7), and a gas-liquid separator connected to the compression pump. (12) The motor and the compression pump are sealed in the casing (14), wherein: the motor (1) is a switched reluctance motor, and the stator (3) has a coil (5) on the salient pole thereof. The rotor (6) is an outer salient pole structure, and the rotor is provided with a rotor phase sensor (8, 9) made of a high temperature resistant high pressure material, and the rotor phase sensor is connected to the main control driving circuit.
上述制成转子相位传感器的材料耐高温、 高压是指能够承受通常制冷压 缩机压力容器内的工作压力 18— 30个大气压， 工作温度 90° — 120° C。 本发明的进一步方案是： 所述的转子相位传感器结构为： 设有固定在电 机驱动轴（7)上的相位信号转动体（8)， 转动体的转动面上设有与转子凸极 数量相同、 且圆周向均匀分布的金属导电区（10)， 相邻金属导电区之间是绝 缘材料区 （11 )， 壳体内装有电极架（9)， 电极架上设有可滑动触刷相位信号 转动体上转动面的碳刷电极。 本发明进一步的又一方案是： 所述转子（6) 圆周向的外凸极之间嵌有非 导电、 非导磁材料制成的平衡块 （13 )， 使外凸极式转子 （6) 呈圆柱体形。 本发明采用先进的开关磁阻电机作为制冷压缩机的驱动装置， 具有结构 简单紧凑、 高效节能的优点。 The material for making the rotor phase sensor is resistant to high temperature and high pressure, and is capable of withstanding a working pressure of 18 to 30 atmospheres in a pressure vessel of a conventional refrigeration compressor, and an operating temperature of 90 to 120 ° C. According to a further aspect of the present invention, the rotor phase sensor has the following structure: a phase signal rotating body (8) fixed to the motor drive shaft (7), and the rotating surface of the rotating body is provided with the same number of salient poles as the rotor And the metal conductive region (10) uniformly distributed in the circumferential direction, between the adjacent metal conductive regions is absolutely The edge material region (11) is provided with an electrode holder (9), and the electrode holder is provided with a carbon brush electrode which can slidably touch the rotating surface of the phase signal rotating body. According to still another aspect of the present invention, a balance block (13) made of a non-conductive, non-magnetic material is embedded between the circumferential convex poles of the rotor (6), so that the convex pole rotor (6) It has a cylindrical shape. The invention adopts an advanced switched reluctance motor as a driving device of the refrigeration compressor, and has the advantages of simple and compact structure, high efficiency and energy saving.
发明进一步方案采用的转子相位传感器可以克服通常采用的光电、光纤、 霍耳等相位传感器不能耐受高压容器内高温高压工作条件的不足， 在 18— 30 个大气压和 90° -120° C以上的工作条件下。 转动体上的金属导电区和触刷 转动体的碳刷电极均能保持正常的工作。  The rotor phase sensor adopted by the further solution can overcome the shortcomings of the commonly used photoelectric sensors such as photoelectric, optical fiber and Hall, which cannot withstand the high temperature and high pressure working conditions in the high pressure container, and is in the range of 18-30 atmospheres and 90°-120°C. Under working conditions. The metal conductive area on the rotating body and the carbon brush electrode of the touch rotating body can maintain normal operation.
本发明进一步的又一方案转子采用圆柱体形结构， 可以克服转子凸极在 高压容器里转动产生阻力大的问题， 并提高转子转动的平衡度。 附图说明  According to still another aspect of the present invention, the rotor adopts a cylindrical structure, which can overcome the problem that the rotor salient pole rotates in the high pressure container to generate a large resistance, and improves the balance of the rotation of the rotor. DRAWINGS
图 1、 本发明实施例结构示意图 Figure 1 is a schematic view showing the structure of an embodiment of the present invention
图 2、 图 1的 D-D向结构示意图 Figure 2, Figure 1 shows the D-D structure
图 3、 图 1实施例相位信号转动体 8的 E向结构示意图 FIG. 3 is a schematic diagram showing the E-direction structure of the phase signal rotating body 8 of the embodiment of FIG.
图 4、 本发明压縮机采用二相开关磁阻电机的结构示意图 Figure 4. Schematic diagram of the structure of the compressor of the present invention using a two-phase switched reluctance motor
图 5、 本发明压缩机采用四相开关磁阻电机的结构示意图 Figure 5 is a schematic view showing the structure of a four-phase switched reluctance motor of the compressor of the present invention
1- 电机 2-压缩泵 3-定子 4-永磁体 5-驱动绕组 6-转子 7-主轴  1- Motor 2-Compression pump 3-stator 4- permanent magnet 5-drive winding 6-rotor 7-spindle
8-相位信号转动体 9-电极架 10-导电区 11-绝缘材料电区 12-气液分离器 8-phase signal rotating body 9-electrode holder 10-conducting area 11-insulating material electric area 12-gas-liquid separator
13-转子平衡块 14-机壳 具体实施方案 13-rotor balance block 14-case concrete implementation
本例制冷压縮机采用永磁式开关磁阻调速电动机作为驱动装置。 具体结 构如下： 机壳 14是用 A3钢板制成的圆筒形压力容器， 圆筒形机壳内腔下部装有 压缩泵 2， 压缩泵与装在其上部的电机的主轴 7传动连接， 并与外部的气液 分离器 12连接。 The refrigeration compressor of this example uses a permanent magnet type switched reluctance motor as a driving device. The specific structure is as follows: The casing 14 is a cylindrical pressure vessel made of A3 steel plate, and a lower portion of the inner cavity of the cylindrical casing is provided with a compression pump 2, and the compression pump is connected to the main shaft 7 of the motor mounted at the upper portion thereof, and is externally connected with the gas. The liquid separator 12 is connected.
电机 1为三相永磁式开关磁阻调速电动机， 参见图 2， 其定子 3用普通 硅钢片叠压而成， 设有 6个内凸极， 凸极上均装有漆包线绕成的驱动绕组 5， 接法为 A-A'、 B-B'、 C-C， 对称联接、 串联或并联， 定子中装有两块用稀土 钕铁硼永磁材料制成的线性去磁曲线的高磁能积永磁体， 两块永磁体 4在定 子上相隔 180度对称安装，  The motor 1 is a three-phase permanent magnet switched reluctance motor, see Fig. 2, the stator 3 is laminated with ordinary silicon steel sheets, and has six inner salient poles, and the salient poles are all equipped with an enameled wire wound drive. Winding 5, connected by A-A', B-B', CC, symmetrical connection, series or parallel, the stator is equipped with two high magnetic energy products of linear demagnetization curve made of rare earth neodymium NdFeB permanent magnet material. Permanent magnet, two permanent magnets 4 are symmetrically mounted 180 degrees apart on the stator.
安装永磁体 4的目的是： 从能量转换的观点看， 常规的开关磁阻电动机 仅能获得一半的利用率， 因为电磁转矩的方向是由绕组电感随转角的变化率 决定， 与电流无关， 故在电感上升期通以电流时产生正向驱动转矩； 在电感 下降期通以电流时产生制动转矩， 这样在定子绕组的一个开关周期中， 最多 只有半个周期得到利用， 为避免在电感下降区产生制动转矩、 绕组电流的关 断角不得不较多地提前于最大电感位置， 半个周期都未得到充分利用， 由此 产生了换流问题和相对材料利用率低问题， 本例在电机定子中用永磁材料预 生建立一个磁场， 通过控制定子绕组电流方向， 使永磁体产生的磁场和绕组 电流产生的磁场相互作用， 就能实现在电感下降区也能产生正向转矩， 从而 大大提高了永磁式开关磁阻电动机的性能。  The purpose of installing the permanent magnet 4 is: From the viewpoint of energy conversion, the conventional switched reluctance motor can only achieve half of the utilization rate, because the direction of the electromagnetic torque is determined by the rate of change of the winding inductance with the rotation angle, irrespective of the current. Therefore, the forward driving torque is generated when the current is applied during the rising period of the inductor; the braking torque is generated when the current is passed during the falling period of the inductor, so that at least one half cycle is utilized in one switching cycle of the stator winding, in order to avoid The braking torque is generated in the falling region of the inductor, and the turning angle of the winding current has to be advanced more than the maximum inductance position, and half of the cycle is not fully utilized, thereby causing the problem of commutation and low relative material utilization. In this example, a permanent magnetic material is pre-generated in the stator of the motor to establish a magnetic field. By controlling the direction of the stator winding current, the magnetic field generated by the permanent magnet interacts with the magnetic field generated by the winding current, so that the positive inductance region can also be generated. The torque is applied, thereby greatly improving the performance of the permanent magnet switched reluctance motor.
参见图 2， 转子 6用硅钢片叠压成 4凸极结构， 圆周向的 4个凸极之间 嵌有用不导电， 也不导磁的电木或环氧板制成的转子平衡块 13， 使转子 6呈 圆柱体形， 从而使转子转动起来更加平衡、 平滑， 降低转子在压力容器中转 动时受到的阻力。  Referring to Fig. 2, the rotor 6 is laminated with a silicon steel sheet into a 4 salient pole structure, and a rotor balance block 13 made of a non-conductive, non-magnetic, bakelite or epoxy board is embedded between the four salient poles in the circumferential direction. The rotor 6 is formed in a cylindrical shape, so that the rotor is rotated more balanced and smooth, and the resistance of the rotor when rotating in the pressure vessel is reduced.
开关磁阻电动机的驱动需要有控制信号指令， 控制信号指令主要根据转 子的相位信号发出， 所以开关磁阻电动机均设有用于检测转子旋转角度的光 电、 光纤、 霍耳等相位信号传感器， 由于本发明的开关磁阻电机是用在高温 压力容器里， 其中的工作压力可达 18— 30个大气压， 工作温度可达 90° - 120° C, 因此前述的传感器不能保证工作的可靠性。  The driving of the switched reluctance motor requires a control signal command, and the control signal command is mainly issued according to the phase signal of the rotor. Therefore, the switched reluctance motor is provided with a phase signal sensor for detecting the rotation angle of the rotor, such as photoelectric, optical fiber, and Hall. The invented switched reluctance motor is used in a high temperature pressure vessel, wherein the working pressure can reach 18-30 atmospheres, and the working temperature can reach 90° - 120 ° C, so the aforementioned sensor cannot guarantee the reliability of the work.
本例检测转子旋转角度的相位信号传感器结构为： 设有固定在电机驱动 轴 Ί上的相位信号转动体 8， 转动体的转动面上设有与转子凸极数量相同、 且圆周向均匀分布的金属导电区 10， 相邻金属导电区之间是绝缘材料区 11， 壳体内装有电极架 9， 电极架上设有可滑动触刷相位信号转动体上转动面的 碳刷电极。 参见图 3， 所述的相位信号转动体 8呈圆盘形， 在用绝缘材料制 成的圆盘盘面上设有与转子凸极数量 Ν相同、 圆周向均匀分布的所述金属导 电区 10, 所述的金属导电区分别呈 360度 /2Ν角度的扇形区， 圆盘形转动体 8装在电机主轴上部， 电极架 9上设置的电刷与设有金属导电区的圆盘盘面 滑动配合地触刷连接。 The phase signal sensor structure for detecting the rotation angle of the rotor in this example is as follows: The phase signal on the shaft turns the rotating body 8, and the rotating surface of the rotating body is provided with a metal conductive region 10 having the same number of salient poles as the rotor and uniformly distributed in the circumferential direction, and an insulating material region 11 between adjacent metal conducting regions, the shell The electrode holder 9 is arranged in the body, and the electrode holder is provided with a carbon brush electrode which can slidably touch the rotating surface of the phase signal rotating body. Referring to FIG. 3, the phase signal rotating body 8 has a disk shape, and the metal conductive region 10 which is uniformly distributed in the circumferential direction is provided on the disk surface of the disk made of an insulating material. The metal conductive regions respectively have a sector of 360 degrees/2Ν angle, the disc-shaped rotating body 8 is mounted on the upper part of the motor main shaft, and the brush provided on the electrode holder 9 is slidingly matched with the disc surface provided with the metal conductive area. Touch the brush connection.
本例转子 6设有四个凸极， 所以相位信号转动体 8圆盘面上的扇形金属 导电区呈 45度角， 圆盘形转动体形用电木板制成， 其盘面上的扇形金属导电 区为铜板制成。  In this example, the rotor 6 is provided with four salient poles, so that the sector-shaped metal conductive region on the disk surface of the phase signal rotating body 8 is at an angle of 45 degrees, and the disc-shaped rotating body is made of electric wood, and the sector-shaped metal conductive region on the disk surface Made of copper plate.
本发明压缩机采用的开关磁阻驱动电机为三相电机， 还可以采用两相、 四相及更多不同相数的电机，图 4为本发明可采用的两相开关磁阻驱动电机， 图 5为本发明可采用的四相开关磁阻驱动电机。  The switched reluctance drive motor used in the compressor of the invention is a three-phase motor, and two-phase, four-phase and more different phase numbers of motors can also be used. FIG. 4 is a two-phase switched reluctance drive motor which can be used in the present invention. 5 is a four-phase switched reluctance drive motor that can be used in the present invention.
驱动系统功率变换器是永磁式开关磁阻电动机的能量供给者， 本例主电 路采用裂相式电子驱动电路， 以对称电源供电、 对电网无冲击力、 高效节能。  The drive system power converter is the energy supplier of the permanent magnet switched reluctance motor. In this example, the main circuit adopts a split-phase electronic drive circuit, which is powered by a symmetrical power supply, has no impact on the power grid, and is energy efficient.
本例采用开关磁阻电动机的制冷压縮机具有结构简单、工作可靠、节能、 在调速范围内具有很高效率的优点。  In this example, the refrigeration compressor using the switched reluctance motor has the advantages of simple structure, reliable operation, energy saving, and high efficiency in the speed regulation range.
以上所述， 仅是本发明的较佳实施例， 并非对本发明作任何形式上的限 制， 凡是依据本发明的技术实质对以上实施例所作的任何简单修改、 等同变 化与修饰， 均仍属本发明技术方案的保护范围。  The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still present. The scope of protection of the technical solution of the invention.

Claims

权利要求书 Claim
1、 一种制冷压缩机， 设有电机 （1 )、 与电机驱动轴 （7 ) 传动连接的压 缩泵（2)、 与压缩泵连通的气液分离器（12)， 所述的电机和压缩泵密封在机 壳 （14) 内， 其特征在于： 所述的电机 （1 ) 是开关磁阻电机， 其定子 （3 ) 凸极上装有线圈 （5 )， 其转子（6)为外凸极结构， 所述的机壳内设有由耐高 温高压材料制成的转子相位传感器（8， 9)， 转子相位传感器与主控驱动电路 连接。 1. A refrigeration compressor comprising a motor (1), a compression pump (2) coupled to a motor drive shaft (7), a gas-liquid separator (12) in communication with the compression pump, said motor and compression The pump is sealed in the casing (14), characterized in that: the motor (1) is a switched reluctance motor, and the stator (3) has a coil (5) on its salient pole, and the rotor (6) is an external salient pole. Structure, the casing is provided with a rotor phase sensor (8, 9) made of high temperature resistant high pressure material, and the rotor phase sensor is connected with the main control driving circuit.
2、 根据权利要求 1所述的制冷压縮机， 其特征在于： 所述的转子相位传 感器结构为： 设有固定在电机驱动轴（7)上的相位信号转动体（8)， 转动体 的转动面上设有与转子凸极数量相同、且圆周向均匀分布的金属导电区（10)， 相邻金属导电区之间是绝缘材料区（11 )， 壳体内装有电极架 （9)， 电极架上 设有可滑动触刷相位信号转动体上转动面的碳刷电极。 2. The refrigerant compressor according to claim 1, wherein: said rotor phase sensor has: a phase signal rotating body (8) fixed to a motor drive shaft (7), and a rotating body The rotating surface is provided with a metal conductive region (10) having the same number of salient poles as the rotor and uniformly distributed in the circumferential direction, and an insulating material region (11) is arranged between the adjacent metal conductive regions, and an electrode holder (9) is arranged in the housing. The electrode holder is provided with a carbon brush electrode that slidably touches the rotating surface of the phase signal rotating body.
3、 根据权利要求 2所述的制冷压縮机， 其特征在于： 所述的相位信号转 动体（8)呈圆盘形， 在用绝缘材料制成的圆盘盘面上设有与转子凸极数量 N 相同、 圆周向均匀分布的所述金属导电区 （10)， 所述的金属导电区分别呈 360度 /2N角度的扇形区， 圆盘形转动体（8)装在电机主轴上部， 电极架（9) 上设置的电刷与设有金属导电区的圆盘盘面滑动配合地触刷连接。 3. The refrigerant compressor according to claim 2, wherein: said phase signal rotating body (8) has a disk shape, and is provided with a salient pole of the rotor on a disk surface made of an insulating material. The metal conductive region (10) having the same number N and uniformly distributed in the circumferential direction, wherein the metal conductive regions are respectively in a sector of 360 degrees/2N angle, and the disc-shaped rotating body (8) is mounted on the upper part of the motor spindle, the electrode The brush provided on the frame (9) is in sliding contact with the disk surface provided with the metal conductive area.
4、 根据权利要求 1-3任一权利要求所述的制冷压缩机， 其特征在于： 所 述转子（6)圆周向的外凸极之间嵌有非导电、非导磁材料制成的平衡块（ 13 )， 使外凸极式转子 （6) 呈圆柱体形。 The refrigeration compressor according to any one of claims 1 to 3, characterized in that: the outer circumference of the rotor (6) is embedded with a balance made of a non-conductive, non-magnetic material. The block (13) has a convex cylindrical rotor (6) in a cylindrical shape.
5、 根据权利要求 1-3任一权利要求所述的制冷压缩机， 其特征在于： 所 述的定子 （3 ) 中装有两块相隔 180度对称安装的永磁体 （4)。 The refrigerant compressor according to any one of claims 1 to 3, characterized in that: the stator (3) is provided with two permanent magnets (4) symmetrically mounted 180 degrees apart.
6、 根据权利要求 4所述的制冷压缩机， 其特征在于： 所述的定子 (3 ) 中设有两块相隔 180度对称安装的永磁体 （4)。 The refrigerant compressor according to claim 4, characterized in that: the stator (3) is provided with two permanent magnets (4) symmetrically mounted 180 degrees apart.
PCT/CN2008/001234 2007-06-27 2008-06-26 A refrigerant compressor WO2009000162A1 (en)

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CN100472071C (en) * 2007-06-27 2009-03-25 何世政 Refrigeration compressor
CN105978275B (en) * 2016-01-28 2018-07-27 冯西川 Circumferential direction superposition Magnetic circuit switch magnetic resistance dc motor

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