阅读说明：本技术 离心分离机构、甩干机及洗衣机 (Centrifugal separation mechanism, drying machine and washing machine ) 是由 李海军 武凤玲 滕东晖 王书春 于 2018-08-17 设计创作，主要内容包括：本发明提供了一种离心分离机构,包括：分离腔体,用于装载待甩干物,形成有竖直布置的转轴,具有绕转轴沿单一方向转动的转动状态；以及抬升部,设置于分离腔体的外表面,抬升部配置成在分离腔体的转动状态下随分离腔体转动时受到周围空气产生的向上的升力,以使得在分离腔体的转动状态下向上抬升分离腔体。由于在分离腔体的外表面上设置有抬升部,抬升部随分离腔体一起沿单一方向旋转时,受到周围空气产生的向上的升力,使得分离腔体在持续转动时其整体的等效重力减小。当分离腔体整体的等效重力减小时,其转动时的重心更加不容易偏离转动中心,故可以减少分离腔体转动时产生的震动,进而降低离心分离机构整体的噪音。(The present invention provides a centrifugal separation mechanism, comprising: the separation cavity is used for loading the object to be dried, is provided with a vertically arranged rotating shaft and has a rotating state of rotating around the rotating shaft along a single direction; and the lifting part is arranged on the outer surface of the separation cavity and is configured to receive an upward lifting force generated by the surrounding air when the lifting part rotates along with the separation cavity in the rotating state of the separation cavity, so that the separation cavity is lifted upwards in the rotating state of the separation cavity. Because the lifting part is arranged on the outer surface of the separation cavity, when the lifting part rotates along with the separation cavity along a single direction, the lifting part receives upward lifting force generated by surrounding air, so that the integral equivalent gravity of the separation cavity is reduced when the separation cavity continuously rotates. When the integral equivalent gravity of the separation cavity is reduced, the gravity center of the separation cavity is not easy to deviate from the rotation center during rotation, so that the vibration generated during rotation of the separation cavity can be reduced, and the integral noise of the centrifugal separation mechanism is further reduced.)

1. A centrifugal separation mechanism comprising:

the separation cavity is used for loading objects to be separated and has a rotating state of rotating around a vertically arranged rotating shaft along a single direction; and

the lifting part is arranged on the outer surface of the separation cavity, is configured to receive an upward lifting force generated by surrounding air when rotating along with the separation cavity in the rotating state of the separation cavity, and transmits the lifting force to the separation cavity.

2. The centrifugal separation mechanism of claim 1,

the lifting portion includes a helical flange coiled around an outer surface of the separation chamber, the helical flange being helically disposed around the shaft.

3. The centrifugal separation mechanism of claim 2,

the lifting part comprises one spiral flange which is coiled at least one circle around the outer surface of the separation cavity.

4. The centrifugal separation mechanism of claim 1,

the lifting part comprises an airfoil extending from the outer surface of the separation cavity to a direction away from the rotating shaft, and the airfoil is configured such that the air flow rate below the airfoil is smaller than the air flow rate above the airfoil when the airfoil rotates with the separation cavity in the rotating state of the separation cavity.

5. The centrifugal separation mechanism of claim 4,

the lower surface wall of the airfoil is planar, and the upper surface wall of the airfoil is curved and protrudes upwards.

6. The centrifugal separation mechanism of claim 4,

the lifting part comprises two or more than two airfoils, and the airfoils are uniformly distributed in the same horizontal plane.

7. The centrifugal separation mechanism of claim 6,

each of the airfoils are arranged in a circular array about the axis of rotation.

8. The centrifugal separation mechanism of claim 1,

the separation cavity is a barrel and comprises a circumferential wall and a bottom wall connected to the lower end of the circumferential wall, and the lifting part is arranged on the outer surface of the circumferential wall.

9. A spin dryer comprising:

a centrifugal separation mechanism as claimed in any one of claims 1 to 8.

10. A washing machine comprising:

a centrifugal separation mechanism as claimed in any one of claims 1 to 8.

Technical Field

The invention relates to a rotating mechanism, in particular to a centrifugal separation mechanism, a drying machine and a washing machine.

Background

The centrifugal separation mechanism separates a plurality of substances in the object to be separated by centrifugal force, for example, a plurality of elements in a certain reagent, moisture in laundry, and the like. The centrifugal separation mechanism generally has a separation chamber and a drive mechanism for driving the separation chamber to rotate. The separation chamber is generally vertically arranged for loading the objects to be separated. When the driving device drives the separation cavity to rotate continuously along a single direction around the vertically arranged rotating shaft, the objects to be separated in the separation cavity are separated due to the action of centrifugal force.

Disclosure of Invention

An object of the present invention is to provide a centrifugal separating mechanism, a spin dryer, and a washing machine with small vibration and noise.

In particular, the present invention provides a centrifugal separation mechanism comprising:

the separation cavity is used for loading objects to be separated and has a rotating state of rotating around a vertically arranged rotating shaft along a single direction; and

and the lifting part is arranged on the outer surface of the separation cavity, is configured to receive upward lifting force generated by surrounding air when rotating along with the separation cavity in the rotating state of the separation cavity, and transmits the lifting force to the separation cavity.

Further, the lifting portion includes a spiral flange wound around an outer surface of the separation chamber, the spiral flange being spirally arranged around the rotation shaft.

Further, the lifting portion comprises a helical flange which is wound at least one turn around the outer surface of the separation chamber.

Further, the lifting portion comprises an airfoil extending from the outer surface of the separation cavity in a direction away from the rotation axis, and the airfoil is configured such that the air flow velocity below the airfoil is smaller than the air flow velocity above the airfoil when the airfoil rotates with the separation cavity in a rotating state of the separation cavity.

Further, the lower surface wall of the airfoil is planar, and the upper surface wall of the airfoil is curved and convex upward.

Further, the lifting part comprises two or more than two airfoils, and all the airfoils are uniformly distributed in the same horizontal plane.

Further, each airfoil is arranged in a circular array about the axis of rotation.

Further, the separation cavity is a barrel and comprises a circumferential wall and a bottom wall connected to the lower end of the circumferential wall, and the lifting part is arranged on the outer surface of the circumferential wall.

The second aspect of the present invention also provides a spin dryer comprising:

the centrifugal separation mechanism according to any one of the above.

The third aspect of the present invention also provides a washing machine comprising:

the centrifugal separation mechanism according to any one of the above.

According to the centrifugal separation mechanism, the lifting part is arranged on the outer surface of the separation cavity, and when the lifting part rotates along with the separation cavity along a single direction, the lifting part receives upward lifting force generated by surrounding air, and the lifting force is transmitted to the separation cavity by the lifting part, so that the integral equivalent gravity of the separation cavity is reduced when the separation cavity continuously rotates. When the integral equivalent gravity of the separation cavity is reduced, the gravity center of the separation cavity is not easy to deviate from the rotation center during rotation, so that the vibration generated during rotation of the separation cavity can be reduced, and the integral noise of the centrifugal separation mechanism is further reduced.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic perspective view of a centrifugal separation mechanism according to one embodiment of the present invention;

FIG. 2 is a schematic perspective view of a centrifugal separation mechanism according to yet another embodiment of the present invention;

FIG. 3 is a schematic front view of the centrifugal separation mechanism of FIG. 2;

fig. 4 is a schematic structural view of a washing machine according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The centrifugal separation mechanism is a mechanism for substantially separating each substance in the object to be separated by using centrifugal force. The device can be used in some equipment needing reagent separation, and can also be used in a drying machine and a washing machine. It can separate only some substances in the mixture, or can separate and remove some substances (such as separating and removing water in clothes). The substance to be separated may be any mixture, and the substance to be separated may be various, for convenience, the following description will be given by taking an example of a centrifugal separation mechanism for separating moisture from laundry, and it should be noted that the following does not suggest that the centrifugal separation mechanism is only used for spin-drying laundry.

The centrifugal separation mechanism includes a separation chamber 10 and a lift portion. The separation chamber 10 is vertically arranged for loading the laundry to be spin-dried. The separation chamber 10 is driven by a driving device that forms the separation chamber 10 into a rotation state that continuously rotates in a single direction around a vertically arranged rotation shaft (the rotation shaft is not necessarily a central shaft, that is, the separation chamber 10 is not necessarily a rotation body) (for convenience of description, a rotation direction of the separation chamber 10 in the above rotation state is hereinafter referred to as a first direction). It should be noted that the above does not imply that the separation chamber 10 only has the above-mentioned rotation state, that is, in addition to the above-mentioned rotation state, the separation chamber 10 may rotate around the above-mentioned rotation axis in the direction opposite to the first direction, and the separation chamber 10 may rotate continuously or intermittently. When the separation chamber 10 is in a rotating state, the clothes in the separation chamber 10 are thrown to the inner wall surface closely attached to the separation chamber 10 by centrifugal force, and the water in the clothes is thrown out by water permeable holes (not shown in the drawings) on the surface wall of the separation chamber 10 (the water permeable holes are only structures that the centrifugal separation mechanism may have when being used for spin-drying the clothes, and when the centrifugal separation mechanism is used for separating reagents, the water permeable holes are not needed), so that the water in the clothes is basically separated.

The lifting part is arranged on the outer surface of the separation cavity 10 and can be fixedly connected with the separation cavity 10, such as welded, screwed, bonded or integrally connected. The lifting portion is configured to receive an upward lifting force (which may be a reaction force generated by air or a thrust generated by a difference in upper and lower air pressures of the lifting portion) generated by ambient air when the separation chamber 10 rotates in the rotation state of the separation chamber 10, so that the separation chamber 10 is lifted upward in the rotation state of the separation chamber 10. That is, it can be understood that when the lifting portion rotates around the rotation shaft in the first direction, the lifting portion has a tendency of lifting upward due to the action of the ambient air (the principle of the lifting portion may be similar to that of a fixed wing of an airplane, a ceiling fan or a bamboo dragonfly, etc., the ceiling fan and the bamboo dragonfly use the reaction force of the air, and the fixed wing of the airplane uses the thrust generated by the difference of the upper and lower air pressures).

The lifting part enables the separation cavity 10 to lift upwards when the separation cavity 10 is in a rotating state, and because the separation cavity 10 does not generally have a stroke in the vertical direction, and the lifting part cannot enable the separation cavity 10 to generate displacement in the vertical direction, the lifting refers to that the lifting part provides a lifting force in the vertical direction to the separation cavity 10, so that the equivalent gravity of the whole separation cavity 10 is reduced. When the overall equivalent gravity of the separation cavity 10 is reduced, the positioning of the separation cavity 10 is more stable, and the gravity center of the separation cavity 10 is closer to the rotation center when the separation cavity rotates, so that the vibration generated when the separation cavity 10 rotates can be reduced, and the overall noise of the centrifugal separation mechanism is further reduced.

The separation chamber 10 may be a cylindrical shape, and includes a vertically arranged circumferential wall 11 and a bottom wall 12 connected to a lower end of the circumferential wall 11, when the separation chamber 10 is a circular barrel, the air resistance to the rotation is smaller, and the rotation state is more stable. In particular, the raised portion may be provided on the outer surface of the circumferential wall 11 of the separation chamber 10, which may allow the raised portion to have a larger rotation radius, thereby allowing it to have a larger linear velocity, thereby enabling a larger lift force to be obtained. In a specific embodiment, the raised portion may also be disposed on bottom wall 12, such as a structure such as a helical blade of a ceiling fan disposed on a lower surface of bottom wall 12.

The elevation may comprise a helical flange 22 wound around the outer surface of the separation chamber 10, the helical flange 22 being arranged helically around the axis of rotation, the helical flange 22 pushing the surrounding air flow downwards when the helical flange 22 is rotated in a first direction, so that the surrounding air flow will give the helical flange 22 an upwards reactive force, so that the helical flange 22 has a tendency to move upwards. Specifically, the number of the spiral beads 22 may be one or more, and when the number of the spiral beads 22 is one, the spiral beads 22 may be wound at least one turn around the outer surface of the separation chamber 10, so that the force is uniformly applied all around the circumference of the separation chamber 10. When the number of the spiral flanges 22 is plural, the spiral flanges 22 may be arranged in a circular array around the rotation axis of the separation chamber 10, and preferably, any two adjacent spiral flanges 22 have a part overlapping in the vertical direction, so that the thrust of the whole spiral flanges 22 to the air can be increased.

Specifically, the spiral flange 22 may be preformed and then welded (or glued, screwed, etc.) to the outer wall of the separation chamber 10; or the spiral flange 22 can be divided into a plurality of sections, and the sections are sequentially welded on the outer wall of the separation cavity 10 and then spliced to form the spiral separation cavity; or may be integrally formed with the separation chamber 10.

The elevation may further comprise an airfoil 21 extending from the outer surface of the separation chamber 10 in a direction away from the axis of rotation, the airfoil 21 being configured such that the air flow velocity therebelow is smaller than the air flow velocity thereabove when rotating with the separation chamber 10 in a rotating state of the separation chamber 10. Specifically, the airfoil 21 may include an upper skin wall 211, a lower skin wall 212, a windward wall 213, the windward wall 213 facing forward toward the ambient airflow that is about to contact the airfoil 21 when the airfoil 21 is rotated in a first direction, and a leeward wall disposed opposite the windward wall 213, the upper ends of the windward wall 213 and the leeward wall both connecting the upper skin wall 211 and the lower end connecting the lower skin wall 212. In order to achieve the purpose that the air flow rate below the airfoil 21 is smaller than the air flow rate above the airfoil when the airfoil 21 rotates with the separation cavity 10 in the rotating state of the separation cavity 10, the distance traveled by the ambient air flow attached to the lower surface wall 212 may be shorter than the distance traveled by the ambient air flow attached to the upper surface wall 211 when the airfoil 21 rotates in the first direction, so that the air flow velocity at the lower surface wall 212 is smaller than the air flow velocity at the upper surface wall 211, and the pressure at the lower surface wall 212 is higher and the pressure at the upper surface wall 211 is lower.

The windward wall 213 may be curved and smoothly transited to the upper surface wall 211 and the lower surface wall 212, so as to effectively reduce the air resistance generated by the profile 21. Specifically, the leeward wall may be removed, and an end of the upper surface wall 211 away from the windward wall 213 may be inclined toward the lower surface wall 212 and connected to an end of the lower surface wall 212 away from the windward wall 213.

In order to enable the distance traveled by the ambient airflow when the airfoil 21 is rotated in the first direction to adhere to the lower surface wall 212 to be shorter than the distance traveled by the ambient airflow when the airfoil is adhered to the upper surface wall 211, in one embodiment, the lower surface wall 212 may be configured to be planar, and the upper surface wall 211 may be upwardly convex.

The number of airfoils 21 may be any number, and when the number of airfoils 21 is two or more, it may be provided that each airfoil 21 is arranged in a circular array about the rotational axis of the separation cavity 10. That is, when the number of the airfoils 21 is two, the two airfoils 21 are symmetrically distributed on both sides of the separation cavity 10, and when the number of the airfoils 21 is three, the three airfoils 21 are included at an angle of 120 degrees with each other two by two. In particular, each airfoil 21 may be located in a different horizontal plane, i.e., the vertical height of each airfoil 21 may be different. In order to facilitate the installation and positioning of the airfoils 21, it is preferable that each of the airfoils 21 is disposed in the same horizontal plane.

The airfoil 21 may be elongated and have equal cross-sections throughout its length, which may facilitate machining of the airfoil 21. Preferably, the cross section of the airfoil 21 is gradually decreasing in a direction away from the rotational axis of the separation chamber 10. Since the linear velocity of the airfoil 21 is greater at the position farther from the rotating shaft of the separation cavity 10, and the amount of lift generated by the ambient air is proportional to the linear velocity of the airfoil 21, the cross section of the airfoil 21 gradually decreases in the direction away from the rotating shaft of the separation cavity 10, so that the lift experienced by the airfoil 21 is more uniform at all positions.

The raised portion may comprise only the helical flange 22; it is also possible to include only the airfoil 21; or a combination of both.

In a second aspect of the present invention, a spin dryer is further provided, wherein the spin dryer has the centrifugal separation mechanism in any one of the above embodiments, and the separation chamber 10 is an inner tub of the spin dryer.

As shown in fig. 4, the third aspect of the present invention further provides a washing machine, which includes the centrifugal separation mechanism in any of the above embodiments, wherein the washing machine further includes a pulsator 40, a driving shaft 30 and an outer tub 50, the separation chamber 10 is an inner tub of the washing machine, and the separation chamber 10 can be used for spin-drying the laundry and also for washing the laundry.

When the separation chamber 10 is used in a washing machine, it may be provided that the end position of the lower surface wall 212 of the airfoil 21 is hinged with the outer wall of the separation chamber 10, and the airfoil 21 has two extreme positions, one of which is vertical and the other is horizontal, and the hinge point is located at the upper end when the airfoil 21 is vertical. The above structure makes the rotating speed of the separating cavity 10 not high when the washing machine is in the washing state, the airfoil 21 naturally droops under gravity and is in a vertical limit state, and at this time, the airfoil 21 hardly receives the lift force or pressure generated by the surrounding air, so that the airfoil 21 does not receive the thrust force periodically changed by the airfoil 21 due to the periodic change of the rotating direction of the separating cavity 10. When the washing machine is in the spin-drying mode, the rotating speed of the separating cavity 10 is high, and the airfoil 21 is thrown to the limit state of horizontal arrangement under the action of centrifugal force, so that upward lifting force can be given to the separating cavity 10.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.