WO2014101766A1

WO2014101766A1 - Washing machine and method for driving washing machine

Info

Publication number: WO2014101766A1
Application number: PCT/CN2013/090422
Authority: WO
Inventors: 尹翔; 劳春峰
Original assignee: 海尔集团技术研发中心; 海尔集团公司
Priority date: 2012-12-29
Filing date: 2013-12-25
Publication date: 2014-07-03
Also published as: CN103911816B; CN103911814A; CN103911816A; WO2014101829A1; CN103911814B

Abstract

The present invention provides a washing machine and a method for driving the washing machine. The washing machine comprises an inner drum and an outer drum. A primary coil is disposed in the circumference of the outer drum, and correspondingly, a secondary induction portion is disposed at the inner drum. When the primary coil is powered on, the primary coil drives the inner drum to rotate. The outer drum is equivalent to a primary coil of an induction motor. The inner drum is equivalent to the secondary induction portion of the induction motor. When the primary coil is powered on, an induced magnetic field is generated around the primary coil, and generates a magnetic acting force in collaboration with the secondary induction portion to drive the inner drum to rotate, and therefore, it is unnecessary to dispose a transmission belt and a clutch, thereby effectively reducing the electric energy and space.

Description

Washing machine and washing machine driving method

Technical field

The invention relates to a washing machine and a washing machine driving method. Background technique

The motor in the conventional washing machine transmits power to the inner cylinder through the clutch and the transmission belt to rotate the inner cylinder, and the transmission belt and the clutch consume a lot of electric energy; on the other hand, the internal space of the washing machine is limited, and the transmission belt and the clutch need to occupy a part. The space makes the washing machine as large as a whole. In addition, since the motor is placed at the bottom, the top of the inner cylinder is more severe during the high-speed drying process. Summary of the invention

In order to solve the above problems, the present invention provides a washing machine and a washing machine driving method, which can effectively save energy and save space. A washing machine includes an inner cylinder and an outer cylinder, a primary coil is disposed along a circumferential direction of the outer cylinder, and the inner cylinder is correspondingly provided with a secondary sensing portion, and the primary coil is electrically connected to the secondary sensing portion A magnetic force is generated to drive the inner cylinder to rotate. A washing machine driving method as described above, comprising:

The inner cylinder is driven to rotate by a magnetic force generated between the primary coil disposed circumferentially of the outer cylinder and the secondary sensing portion provided on the inner cylinder.

The washing machine and the washing machine driving method provided by the invention provide a primary coil in the outer cylinder, and a secondary sensing portion corresponding to the inner cylinder, so that the outer cylinder corresponds to the primary coil of the induction motor, and the inner cylinder corresponds to the secondary sensing portion of the induction motor, and is energized. In the case where the primary coil and the secondary sensing portion generate a magnetic force to drive the inner cylinder to rotate, there is no need to provide a transmission belt and a clutch, thereby effectively saving power and space. DRAWINGS

FIG. 1 is a schematic structural view of an embodiment of a washing machine provided by the present invention.

Figure 2 is a cross-sectional view taken along line A-A of Figure 1. 3 is a schematic structural view of an embodiment of a primary coil in a washing machine provided by the present invention.

4 is a schematic structural view of a first embodiment of a toroidal magnetic conductive portion in a washing machine provided by the present invention. FIG. 5 is a schematic structural view of a second embodiment of a toroidal magnetic conductive portion in a washing machine provided by the present invention.

6 is a schematic structural view of a third embodiment of a toroidal magnetic conductive portion in a washing machine provided by the present invention. FIG. 7 is a schematic structural view of a second embodiment of a primary coil in a washing machine provided by the present invention. FIG. 8 is a schematic structural view of a second embodiment of a washing machine provided by the present invention. detailed description

Embodiments of the present invention will now be described with reference to the accompanying drawings. Elements and features described in one of the figures or an embodiment of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. It should be noted that, for the sake of clarity, the representations and descriptions of the components and processes known to those of ordinary skill in the art that are not related to the present invention are omitted from the drawings and the description. Washing Machine Embodiment 1 The washing machine provided in this embodiment is a pulsator washing machine.

As shown in FIG. 1 and FIG. 2, a washing machine includes an outer cylinder 1 and an inner cylinder 2, and a primary coil is disposed along the circumferential direction of the outer cylinder 1, and the inner cylinder 2 is correspondingly provided with a secondary sensing portion, and the primary coil is energized. A magnetic force is generated with the secondary sensing portion to drive the inner cylinder 2 to rotate.

Specifically, the inner cylinder 2 is rotatably coupled to the outer cylinder 1 via a bearing, and the outer cylinder 1 is fixedly coupled to the outer casing. The primary coil includes a separate first primary coil 3 and a second primary coil 9, the first primary coil 3 and the second primary coil 9 being disposed symmetrically about the axis of the outer cylinder 1 on the outer cylinder wall, preferably, the first primary coil 3 and The second primary coil 9 is disposed on the inner wall of the outer cylinder 1.

The secondary sensing portion is preferably a toroidal magnetically conductive portion 4.

The arcs of the first primary coil 3 and the second primary coil 9 coincide with the arc of the inner wall of the outer cylinder 1, and are fixedly disposed on the inner wall of the outer cylinder 1, and the first primary coil 3 and the second primary coil 9 each include a plurality of outer cylinders 1 a yoke portion that is convex in the radial direction, and a coil is wound around the periphery of the yoke portion. Taking the first primary coil 3 as an example, as shown in FIG. 3, the first primary coil 3 includes a plurality of protrusions along the radial direction of the outer cylinder 1. The yoke portion 31 has a coil 32 wound around the periphery of the yoke portion 31, and the second primary coil 9 has the same structure as the first primary coil 3. As an alternative embodiment, the outer layer of the coil is provided with a waterproof layer to prevent the washing water from wetting the coil during the washing process. The primary coil itself is not magnetic, so it does not generate an induced magnetic field in the event of a power failure. When the coil is energized, an induced magnetic field is generated around it.

The annular magnetically permeable portion 4 provided on the inner cylinder 2 is itself made of a magnetic material, such as a permanent magnet material, so that a magnetic field is generated around it, and in the case where the coil is energized, the first primary coil 3 and the second primary coil 9 are generated. The induced magnetic field interacts with the magnetic field generated by the annular magnetically permeable portion 4 to generate a magnetic force to drive the inner cylinder to rotate.

The magnetic force is an attractive or repulsive force between the first primary coil 3 and the second primary coil 9 and the annular magnetic conductive portion 4, and the inner cylinder is rotated by the attraction or repulsive force. Using the frequency converter to supply power to the coil, changing the direction of the energizing current can change the direction of the induced magnetic field, thereby controlling the first An attractive or repulsive force is generated between the primary coil 3 and the second primary coil 9 and the annular magnetically permeable portion 4, so that the rotational speed of the inner cylinder can be varied over a wide range from tens of revolutions per minute to thousands of revolutions.

When starting, the frequency converter supplies power to the coil 32, and a repulsive force is generated between the first primary coil 3 and the second primary coil 9 and the annular magnetic conductive portion 4 to drive the inner cylinder 2 to rotate. When braking, the frequency converter changes the current direction, first The force between the primary coil 3 and the second primary coil 9 and the annular magnetic conductive portion 4 becomes attractive, causing the inner cylinder 2 to stop rotating; conversely, it can also generate an attractive force at the time of starting, and becomes a repulsive force upon braking. As a preferred embodiment, the inner wall of the outer cylinder 1 is provided with a guiding coil 8 in a direction parallel to its axis, and the guiding coil 8 is used for maintaining the concentricity of the inner cylinder 2 and the outer cylinder 1 because the guiding coil is energized and A magnetic induction force is also generated between the secondary sensing portions; on the other hand, it is also used to ensure an air gap between the primary coil and the annular magnetically permeable portion 4. The annular magnetic conductive portion 4 can also be made of a magnetically permeable material, preferably made of a composite material of a back iron and aluminum. The magnetic force of the magnetic field generated by the energization of the stator drives the inner cylinder to rotate, which can effectively improve the magnetic circuit and reduce energy. loss.

The primary coil and the annular magnetic conductive portion 4 may be disposed at any position of the outer cylinder 1 and the inner cylinder 2, and are preferably disposed at the middle and the upper portion. As a preferred embodiment, the primary coil and the annular magnetic conductive portion 4 are respectively disposed correspondingly. At the open ends of the outer cylinder 1 and the inner cylinder 2.

The primary coil and the annular magnetic conductive portion 4 are respectively disposed on the tops of the outer cylinder 1 and the inner cylinder 2, on the one hand, because the top is in contact with water less, the annular magnetic conductive portion 4 is effectively protected, and on the other hand, the conventional pulsator The inner cylinder of the washing machine is driven by the motor at the bottom. During the high-speed drying process, the top of the inner cylinder is shaken more seriously, and the driving source is set at the top, which can solve this problem well.

As shown in FIG. 4, as an optional embodiment, the inner cylinder 2 may include an annular magnetic conductive portion 4 and a non-magnetic conductive portion 5, and the annular magnetic conductive portion 4 and the non-magnetic conductive portion 5 are integrally formed. The cylinder 2 can effectively save the magnetic conductive material by adopting the structure.

As an alternative embodiment, the entire inner cylinder 2 is made of a magnetically permeable material, which saves the manufacturing process. As shown in FIG. 5, as an alternative embodiment, the annular magnetic conductive portion 4 is an annular magnetic conductive plate 6 sleeved on the outer wall of the inner cylinder 2, which is convenient for disassembly, if the annular magnetic conductive plate 6 is damaged or Degaussing can be easily replaced, and the material of the inner cylinder can be a non-magnetic material.

As shown in FIG. 6 , as an alternative embodiment, a plurality of gear teeth 7 may be disposed on the outer wall of the annular magnetic conductive plate 6 , and the plurality of gear teeth 7 and the annular magnetic conductive plate 6 are integrally formed. The annular magnetically permeable plate with gear teeth serves as the annular magnetic conductive portion of the inner cylinder 2, and is capable of reinforcing the magnetic force between the stator and the stator. As shown in FIG. 7, as an alternative embodiment, the primary coil includes: a third primary coil 10, a fourth primary coil 11, a fifth primary coil 12, and a sixth primary coil 13, a third primary coil 10, The four primary coils 11, the fifth primary coil 12, and the sixth primary coil 13 are disposed on the inner wall of the outer cylinder 1 at equal intervals in the circumferential direction of the outer cylinder 1.

The third primary coil 10, the fourth primary coil 11, the fifth primary coil 12, and the sixth primary coil 13 are energized at the coil In the case, the induced magnetic fields generated by the third primary coil 10, the fourth primary coil 11, the fifth primary coil 12, and the sixth primary coil 13 interact with the magnetic field generated by the secondary sensing portion of the inner cylinder 2 to generate magnetic force. The barrel 2 is rotated, and at this time, it is not necessary to provide a guide coil. In addition, the pulsator of the washing machine can be controlled by a separate motor without the need to set the drive belt and clutch.

The washing machine provided by the invention provides a primary coil on the inner wall of the outer cylinder, a secondary sensing portion corresponding to the inner cylinder, an outer cylinder corresponding to the primary coil of the induction motor, and an inner cylinder corresponding to the secondary sensing portion of the induction motor, and the primary coil in the case of energization The induced magnetic field is generated around, and the magnetic force is generated by the secondary sensing portion to drive the inner cylinder to rotate, and the transmission belt and the clutch are not required to save energy and space. In addition, the primary coil and the secondary sensing portion are respectively disposed in the outer cylinder and the inner cylinder. The top of the tube can effectively reduce the shaking of the inner cylinder. The washing machine provided by the invention has an inner cylinder (including a secondary sensing portion disposed thereon) as a secondary sensing portion of the induction motor, and a linear induction motor is formed with the primary coil fixed on the outer cylinder, and the motor is powered by a frequency converter. The inner cylinder rotation speed is varied over a wide range (from tens of revolutions per minute to thousands of revolutions).

Washing machine embodiment 2:

The washing machine provided in this embodiment is a drum washing machine.

As shown in FIG. 8, the washing machine provided in this embodiment includes:

The inner cylinder 201 and the outer cylinder 202 are provided with a primary coil in the circumferential direction of the outer cylinder 202, and the inner cylinder 201 is provided with a secondary sensing portion correspondingly, and the primary coil drives the inner cylinder 201 to rotate when energized. The primary coil includes a first primary coil 203 and a second primary coil 204, and the first primary coil 203 and the second primary coil 204 are symmetrically disposed on the inner wall of the outer cylinder 202. The secondary sensing portion is preferably an annular magnetically conductive portion 205.

The arcs of the first primary coil 203 and the second primary coil 204 coincide with the arc of the inner wall of the outer cylinder 202, and are fixedly disposed on the inner wall of the outer cylinder 202. The first primary coil 203 and the second primary coil 204 each include a plurality of outer cylinders. A yoke portion that is convex in the radial direction of the 202, and a coil is wound around the periphery of the yoke portion. As an alternative embodiment, the outer layer of the coil is provided with a waterproof layer to prevent the washing water from wetting the coil during the washing process. The primary coil itself is not magnetic, so it does not generate an induced magnetic field in the event of a power failure. When the coil is energized, an induced magnetic field is generated around it.

The annular magnetically permeable portion 205 provided on the inner cylinder 202 is itself made of a magnetic material, such as a permanent magnet material, so that a magnetic field is generated around it, and in the case where the coil is energized, the first primary coil 203 and the second primary coil 204 are generated. The induced magnetic field interacts with the magnetic field generated by the annular magnetically permeable portion 205 to generate a magnetic force to drive the inner cylinder to rotate. The primary coil and the secondary sensing portion are correspondingly disposed at the open ends of the outer cylinder and the inner cylinder. The working principle of the drum washing machine provided in this embodiment is the same as that of the pulsator washing machine. For details, please refer to the drum washing machine provided in this embodiment of the washing machine. The primary coil is disposed on the inner wall of the outer cylinder, and the inner cylinder is correspondingly provided with a secondary sensing portion, and the outer cylinder is equivalent. In the primary coil of the induction motor, the inner cylinder is equivalent to the secondary sensing portion of the induction motor. When the power is applied, an induced magnetic field is generated around the primary coil, and the secondary sensing portion generates a magnetic force to drive the inner cylinder to rotate, and the inner cylinder (including The secondary sensing portion thereon acts as a secondary sensing portion of the induction motor, and forms a linear induction motor with the primary coil fixed on the outer cylinder. The motor is powered by the inverter, and the inner cylinder rotation speed can be varied within a wide range (from Dozens of turns per minute to thousands of turns).

Embodiment of the washing machine driving method: The washing machine driving method provided by the embodiment includes: driving the inner cylinder to rotate by a magnetic force generated between a primary coil disposed circumferentially along the outer cylinder and a corresponding secondary sensing portion on the inner cylinder. The inner cylinder and the primary coil fixed to the outer cylinder constitute a linear induction motor.

The primary coil includes a first primary coil and a second primary coil, and the axes of the first primary coil and the second primary coil outer cylinder are symmetrically disposed on the inner wall of the outer cylinder.

A plurality of yoke portions are provided in the primary coil in the radial direction of the outer cylinder, and the coil is wound around the periphery of the yoke portion. A ring-shaped magnetic guide is used as the secondary sensing portion.

The primary coil is energized by a frequency converter to cause a magnetic force between the primary coil and the secondary sensing portion to drive the inner cylinder to rotate.

The annular magnetic conductive portion is used as the secondary sensing portion, and the annular magnetic conductive portion and the non-magnetic conductive portion are integrally formed to form an inner cylinder. Preferably, a toroidal magnetically permeable plate is used as the annular magnetically permeable portion.

A plurality of gears are disposed on the outer wall of the annular magnetic conductive plate, and a plurality of gears are integrally formed with the annular magnetic conductive plate. With this structure, the magnetic circuit can be effectively improved.

In addition, the inner cylinder can be made of a magnetically permeable material, that is, the entire inner cylinder is used as a secondary sensing portion, which simplifies the process flow. As an optional implementation manner, the primary coil includes a third primary coil, a fourth primary coil, a fifth primary coil, and a sixth primary coil, and the third primary coil, the fourth primary coil, the fifth primary coil, and the sixth The primary coils are disposed at equal intervals in the circumferential direction of the outer cylinder on the inner wall of the outer cylinder. As an alternative embodiment, the primary coil and the secondary sensing portion are correspondingly disposed at the open ends of the outer cylinder and the inner cylinder. Further, a guide coil for maintaining the concentricity of the inner cylinder and the outer cylinder is provided in the inner wall of the outer cylinder in a direction parallel to the axis thereof. The specific working principle can refer to the first embodiment of the washing machine. In the washing machine driving method provided in this embodiment, a primary coil is disposed on an inner wall of the outer cylinder, and a secondary sensing portion is disposed corresponding to the inner cylinder, the outer cylinder is equivalent to a primary coil of the induction motor, and the inner cylinder is equivalent to a secondary sensing portion of the induction motor, and the power is applied. An induced magnetic field is generated around the lower primary coil, and a magnetic force is generated by the secondary sensing portion to drive the inner cylinder to rotate, thereby eliminating the need to provide a transmission belt and a clutch, thereby effectively saving power and space. In addition, the primary coil and the secondary sensing portion are respectively disposed in the outer cylinder. And the top of the inner cylinder can effectively reduce the shaking of the inner cylinder.

The washing machine driving method provided by the present invention, the inner cylinder (including the secondary sensing portion disposed thereon) is used as a secondary sensing portion of the induction motor, and a primary induction coil fixed on the outer cylinder forms a linear induction motor, and the motor is powered by a frequency converter. , the inner cylinder rotation speed can be varied within a wide range (from tens of turns to thousands of revolutions per minute).

Having described the invention and its advantages, it is understood that various changes, substitutions and alterations may be made without departing from the spirit and scope of the invention as defined by the appended claims. Further, the scope of the present application is not limited to the specific embodiments of the processes, apparatuses, means, methods and steps described in the specification. It will be readily apparent to those skilled in the art from this disclosure that the present invention can be used in accordance with the present invention to perform substantially the same functions as the corresponding embodiments described herein or to obtain substantially the same results as present and future The process, equipment, means, method or step being developed. Therefore, the appended claims are intended to cover such a process, apparatus, means, methods, or steps.

Claims

Claim

A washing machine, comprising an inner cylinder and an outer cylinder, wherein a primary coil is disposed along a circumferential direction of the outer cylinder, and the inner cylinder is correspondingly provided with a secondary sensing portion, and the primary coil is energized The secondary sensing portion generates a magnetic force to drive the inner cylinder to rotate.

2. The washing machine according to claim 1, wherein the primary coil includes a first primary coil and a second primary coil, and the axes of the first primary coil and the second primary coil are symmetrically disposed on the outer cylinder wall.

The washing machine according to claim 1, wherein the primary coil includes a plurality of yoke portions that are convex in a radial direction of the outer cylinder, and a coil is wound around a periphery of the yoke portion.

The washing machine according to claim 3, wherein a waterproof layer is provided outside the coil.

The washing machine according to claim 3, characterized in that the washing machine further comprises a frequency converter for supplying power to the coil.

The washing machine according to claim 1, wherein the secondary sensing portion is an annular magnetic conductive portion.

The washing machine according to claim 6, wherein the inner cylinder includes a non-magnetic conductive portion, and the annular magnetic conductive portion is integrally formed with the non-magnetic conductive portion.

The washing machine according to claim 6, wherein the annular magnetic conductive portion is an annular magnetic conductive plate that is sleeved on an outer wall of the inner cylinder.

The washing machine according to claim 8, wherein the outer wall of the annular magnetic conductive plate is provided with a plurality of gear teeth, and the plurality of gear teeth are integrally formed with the annular magnetic conductive plate.

The washing machine according to claim 1, wherein the inner cylinder is made of a magnetically permeable material.

The washing machine according to claim 1, wherein the primary coil includes a third primary coil, a fourth primary coil, a fifth primary coil, and a sixth primary coil, the third primary coil, and a fourth primary The coil, the fifth primary coil, and the sixth primary coil are disposed at equal intervals in the circumferential direction of the outer cylinder to the inner wall of the outer cylinder.

The washing machine according to any one of claims 1 to 10, characterized in that the primary coil and the secondary sensing portion are respectively disposed at the open ends of the outer cylinder and the inner cylinder.

The washing machine according to any one of claims 1 to 10, characterized in that the inner wall of the outer cylinder is provided with a guide coil for maintaining the concentricity of the inner cylinder and the outer cylinder in a direction parallel to the axis thereof.

The washing machine according to any one of claims 1 to 10, wherein the secondary sensing portion is made of a composite material of a back iron and aluminum.

The washing machine according to any one of claims 1 to 10, wherein the secondary sensing portion is made of a permanent magnet material.

The washing machine according to any one of claims 1 to 10, wherein the inner cylinder is fixed to the outer cylinder The primary coil constitutes a linear induction motor.

The washing machine according to any one of claims 1 to 10, wherein the washing machine is a pulsator washing machine or a drum washing machine.

18. A washing machine driving method, comprising: driving an inner cylinder to rotate by a magnetic force generated between a primary coil disposed circumferentially of the outer cylinder and a corresponding secondary sensing portion on the inner cylinder.

The washing machine driving method according to claim 18, wherein the primary coil comprises a first primary coil and a second primary coil, and the first primary coil and the second primary coil are disposed symmetrically about the outer cylinder wall.

The washing machine driving method according to claim 18, wherein the primary coil and the secondary sensing portion are respectively disposed at the open ends of the outer cylinder and the inner cylinder.

A washing machine driving method according to claim 18, wherein a guide coil for maintaining the concentricity of the inner cylinder and the outer cylinder is provided in a direction parallel to the axis of the outer cylinder inner wall.