WO2015172643A1

WO2015172643A1 - Drum-type clothes washing machine

Info

Publication number: WO2015172643A1
Application number: PCT/CN2015/077582
Authority: WO
Inventors: 康菲; 吴刚; 殷培杰
Original assignee: 无锡小天鹅股份有限公司
Priority date: 2014-05-16
Filing date: 2015-04-27
Publication date: 2015-11-19

Abstract

A drum-type clothes washing machine (1000), comprising: a housing (1), a washer tub (2), dampers (3), a photoelectric sensor (4), and a control device. The washer tub (2) is rotatably disposed within the housing (1). The two ends of the dampers (3) are connected to the external wall of the washer tub (2) and to the internal wall of the housing (1), respectively. The photoelectric sensor (4) is connected to a damper (3), and is configured to output an electrical signal when there is a change in the position of the washer tub (2). The photoelectric sensor (4) comprises an elastic member. The control device is connected to the sensor (4) so as to receive electrical signals outputted by same.

Description

Drum washing machine

Technical field

The invention relates to the field of laundry, and in particular to a drum washing machine.

Background technique

In the process of using the drum washing machine, different water intake and different washing amount will cause the weight of the drum washing machine to be different, and the drum washing machine will also have the weight of the drum washing machine during the washing process, the rinsing stage and the dehydration drying stage. There has been a change in the drum washing machine of the related art, and the weight of the drum washing machine has not been detected in real time, so that the operation of the drum washing machine cannot be controlled and judged according to the weight change of the drum washing machine.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, it is an object of the present invention to provide a drum washing machine that accurately monitors the weight change of the washing tub in real time.

A drum washing machine according to an embodiment of the present invention includes: a box; a washing tub, the washing tub is rotatably disposed in the box; and a shock absorber, the two ends of the shock absorber are respectively associated with the washing tub An outer wall is coupled to an inner wall of the case; a photosensor, the photosensor being coupled to the damper, the photosensor being configured to output an electrical signal when the position of the wash tub changes, wherein The photosensor includes an elastic member; a control device coupled to the photosensor to receive an electrical signal transmitted by the photosensor.

According to the drum washing machine of the embodiment of the invention, by connecting the photosensor to the damper, the photosensor is configured to output an electric signal when the position of the washing tub changes, and the control device can judge the weight change of the washing tub based on the electric signal, thereby The change in weight of the washing tub can be monitored more accurately in real time to control the drum washing machine to operate more smoothly.

Further, the drum washing machine according to the above embodiment of the present invention may further have the following additional technical features:

In a specific embodiment of the present invention, the damper includes a friction rod and a damper cylinder, the damper cylinder is sleeved outside the friction rod and slidable relative to the friction rod, and one end of the damper cylinder Connected to the outer wall of the washing tub, one end of the friction rod is connected to the inner wall of the tank. Thereby the structure of the shock absorber is simple.

According to some embodiments of the present invention, the photosensor includes: an upper case and a lower case, the upper case and the lower case being connected by an elastic member such that the upper case and the lower case The housings are movable up and down relative to each other, and the upper housing and the lower housing are respectively connected to the damper barrel and the friction rod; a light emitting end and a light receiving end, the light emitting end and the light a receiving end is disposed on one of the upper casing and the lower casing; a light reflecting surface, the light reflecting surface is disposed on the other of the upper casing and the lower casing to be Light emitted by the light emitting end is reflected back to the Light receiving end. Thereby, the structure of the photoelectric sensor is simple and can be accurately detected.

Specifically, both ends of the elastic member respectively abut against the lower surface of the upper casing and the upper surface of the light reflecting surface.

Preferably, the elastic member is a spring.

In some examples of the invention, the bottom end of the upper housing is open, the top end of the lower housing is open, and the upper housing outer cover is on the lower housing. Thereby, the structure of the photoelectric sensor is simple.

Further, the photosensor further includes a photosensor wire connected to the control device.

In some embodiments of the invention, the drum washing machine further includes a suspension spring, the two ends of which are respectively connected to an upper portion of the inner wall of the casing and an outer wall of the washing tub.

In some embodiments of the present invention, the photosensor includes: an upper case and a lower case, the upper case and the lower case being connected by an elastic member such that the upper case and the The lower casings are movable relative to each other; the light emitting end and the light receiving end, the light emitting end and the light receiving end are disposed on one of the upper casing and the lower casing; a light reflecting surface, The light reflecting surface is disposed on the other of the upper case and the lower case to reflect light emitted from the light emitting end back to the light receiving end.

DRAWINGS

1 is a schematic view of a drum washing machine in accordance with an embodiment of the present invention;

Figure 2 is an enlarged schematic view of a portion A of Figure 1;

3 is a schematic diagram of a photosensor in accordance with an embodiment of the present invention.

Reference mark:

Drum washing machine 1000,

Box 1, body 10, upper cover 11,

Washing bucket 2

The damper 3, the friction lever 30, the damper cylinder 31, the first rod 310, the second rod 311, the third rod 301, the fourth rod 302,

Photoelectric sensor 4, light emitting end 41, light receiving end 42, elastic member 43, light reflecting surface 44, lower case 45, upper case 46,

Suspension spring 5,

Foot 6

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings in which the same Or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship of the indications of "post", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential", etc. is based on the drawing The orientation or positional relationship shown is for the purpose of describing the present invention and the simplified description, and is not intended to indicate or imply that the device or component referred to has a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as a limits.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

A drum washing machine 1000 according to an embodiment of the present invention will be described below with reference to Figs.

As shown in FIG. 1, a drum washing machine 1000 according to an embodiment of the present invention includes a cabinet 1, a washing tub 2, a damper 3, a photoelectric sensor 4, and a control device (not shown). The front side of the cabinet 1 is provided with a storage opening (not shown) for holding and taking up the laundry. The washing tub 2 is rotatably disposed in the casing 1 , and the washing tub 2 can swing in a small amount in the casing 1 , and the washing tub 2 contains laundry and water. When the weight of the laundry and the water changes, the washing tub 2 The location will change.

The two ends of the damper 3 are respectively connected to the outer wall of the washing tub 2 and the inner wall of the casing 1. The damper 3 has a buffering effect on the movement of the washing tub 2, that is, the damper 3 functions as a shock absorbing function to ensure The washing tub 2 can run smoothly. In the example of FIG. 1, the damper 3 is located at a lower portion of the casing 1, and the upper portion of the casing 1 is further provided with a suspension spring 5, and both ends of the suspension spring 5 are respectively opposed to the upper portion of the inner wall of the casing 1 and the washing tub 2 The outer walls are connected. Therefore, the suspension spring 5 cooperates with the damper 3 to buffer the movement of the washing tub 1, that is, the suspension spring 5 and the damper 3 together act as a shock absorber to further ensure smooth running of the whole machine.

In some embodiments of the present invention, the photosensor includes an upper case and a lower case, and the upper case and the lower case are connected by an elastic member such that the upper case and the upper case The lower casings are movable relative to each other; the light emitting end and the light receiving end, the light emitting end and the light receiving end are disposed on one of the upper casing and the lower casing; a light reflecting surface, The light reflecting surface is disposed on the other of the upper case and the lower case to reflect light emitted from the light emitting end back to the light receiving end.

The photosensor 4 is connected to the damper 3, which is configured to output an electrical signal when the position of the washing tub 2 changes, wherein the photosensor includes an elastic member. It should be noted here that the photosensor 4 comprises an elastic member, that is to say, the photosensor 4 is provided with an elastic member.

The control device is coupled to the photosensor 4 to receive an electrical signal from the photosensor 4. Specifically, the electrical signal can Therefore, voltage, current, frequency, PWM (pulse width) and the like. In some examples of the invention, photosensor 4 further includes a photosensor wire (not shown) that is coupled to the control device. Thereby, the photosensor 4 is connected to the control device. It should be noted that other structures such as a drive motor are also provided in the casing 1. The washing principle of the drum washing machine 1000 and the like are well known to those skilled in the art and will not be described in detail herein.

Specifically, when the weight of the washing tub 2 changes, the washing tub 2 moves, for example, when the weight of the laundry and the water in the washing tub 2 increases, the washing tub 2 sinks, and at this time, the bottom wall of the washing tub 2 and the box The distance between the inner bottom walls of the body 2 becomes small. Since the damper 3 acts as a buffer for the movement of the washing tub 2, the movement of the washing tub 2 directly acts on the damper 3, and at the same time, since the photosensor 4 is connected to the damper 3, the movement of the washing tub 2 It also acts directly on the photosensor 4, so the photosensor 4 can output an electrical signal according to the position change of the washing tub 2 in real time, the electric signal can accurately reflect the weight change of the washing tub 2, and the control device receives the electric power transmitted from the photosensor 4. The signal judges whether or not the weight of the washing tub 2 has changed. For example, in particular, the control device can perform functions such as accurate weighing of the laundry on the drum washing machine 1000 in accordance with the received electric signal.

For example, the control device can perform the following determination according to the electrical signal output by the photoelectric sensor 4: after the washing is completed, when the drain valve is opened, as the water in the washing tub 2 is discharged, the weight of the washing tub 2 is reduced, and the washing tub 2 moves upward due to drainage. The valve drainage flow rate does not change much, and the value output by the photoelectric sensor 4 is also a downward linear curve; when the water in the washing tub 2 is drained, the weight of the washing tub 2 does not change, and the position of the washing tub 2 does not change at this time. The photosensor 4 outputs a straight line close to the horizontal. When the data value collected by the controller no longer changes or changes very little, that is, it is judged that the drum washing machine is drained, the dehydration action can be started immediately. This method of judging is more accurate than the existing water level photoelectric sensor judging method. The water in the washing tub 2 can be immediately sensed after being discharged, and dehydration can be started immediately, which can reduce the washing time. It is of course to be understood that the control device can also judge other operations of the washing tub 2 according to the collected weight change of the washing tub 2, which will not be described in detail herein.

According to the drum washing machine 1000 of the embodiment of the present invention, by connecting the photosensor 4 to the damper 3, the photosensor 4 is configured to output an electric signal when the position of the washing tub 2 changes, and the control device can judge the washing tub based on the electric signal The weight change of 2 allows the weight change of the washing tub 2 to be monitored more accurately in real time to control the drum washing machine 1000 to operate more smoothly.

A drum washing machine 1000 according to an embodiment of the present invention will now be described with reference to Figs.

As shown in FIG. 1, the drum washing machine 1000 includes a cabinet 1, a washing tub 2, a damper 3, a photoelectric sensor 4, a suspension spring 5, and a control device.

The case 1 includes a body 10 and an upper cover 11 with the top of the body 10 open, and the upper cover 11 cooperates with the top of the body 10 to define a space for holding the washing tub 2 with the body 10. The receiving opening is provided on the front side of the body 10. The body 10 is further provided with a cover plate (not shown) for opening or closing the receiving opening. A foot 6 is provided at each corner of the bottom wall of the body 10.

The washing tub 2 includes a tub (not shown) and a dewatering tub (not shown), and the dewatering tub is rotatably provided in the tub. The water tub is connected to the inner wall of the casing 1 through the suspension spring 5 and the damper 3. The two ends of the suspension spring 5 are respectively connected with the upper portion of the inner wall of the casing 1 and the outer wall of the tub, and the two ends of the damper 3 are respectively The bottom wall of the box body 1 is connected to the outer wall of the water tub, and the suspension spring 5 and the damper 3 respectively have a certain buffer absorption effect on the movement energy of the washing tub 2, which can ensure the smooth running of the whole machine.

The damper 3 includes a friction rod 30 and a damper cylinder 31. The damper cylinder 31 is jacketed outside the friction rod 30 and slidable relative to the friction rod 30. One end of the damper cylinder 31 is connected to the outer wall of the washing tub 2, and the friction rod 30 is One end is connected to the inner wall of the casing 1. Specifically, when the weight of the washing tub 2 changes and moves, the damper cylinder 31 can slide on the friction lever 30 to act as a buffer for the movement of the washing tub 2 under the action of the washing tub 2.

The photosensor 4 includes an upper casing 46, a lower casing 45, a light emitting end 41, a light receiving end 42, and a light reflecting surface 44, wherein the bottom end of the upper casing 46 is open, and the top end of the lower casing 45 is open, the upper casing The body 46 is housed on the lower housing 45.

The upper housing 46 and the lower housing 45 are connected by a spring 43 such that the upper housing 46 and the lower housing 45 can move up and down relatively, that is, the upper housing 46 can move up and down relative to the lower housing 45. The lower housing 45 is movable up and down relative to the upper housing 46. The upper casing 46 is connected to the damper cylinder 31, and the lower casing 45 is connected to the friction rod 30. When the damper cylinder 31 slides on the friction rod 30, the shape of the spring 43 changes, and the upper casing 46 can be opposite to the lower casing. The body 45 moves.

As shown in FIG. 1 and FIG. 2, in order to ensure the connection between the damper 3 and the photosensor 4 on the premise of ensuring the damper action of the damper 3, the damper cylinder 31 includes the first rod 310 and the The two rods 311, the friction rod 30 includes a third rod 301 and a fourth rod 302, the first rod 310 is jacketed on the third rod 301 to slide on the third rod 301, and the second rod 311 is from the outer peripheral wall of the first rod 310 Extending outwardly, the second rod 311 is formed in a generally "L" shape, and the free end of the second rod 311 is coupled to the top wall of the upper casing 46. The fourth rod 302 extends outward from the outer peripheral wall of the third rod 301, and the fourth rod 302 is formed in a substantially "L" shape, and the free end of the fourth rod 302 is connected to the bottom wall of the lower casing 45. It is of course to be understood that the damper 3 and the photosensor 4 can be connected in any manner as long as the shock absorbing effect of the damper 3 is ensured and the photoelectric sensor 4 can transmit an electrical signal when the position of the washing tub 2 changes. can.

The spring 43 is a linear spring having a spring constant. Both ends of the spring 43 are respectively abutted against the lower surface of the upper casing 46 and the upper surface of the light reflecting surface 44. It should be understood that the upper casing 46 and the lower casing 45 may be connected by other elastic members, and the elastic members may also be connected to the upper casing 46 and the lower casing 45 by other means, the upper casing 46 and The shape of the lower case 45, the fitting relationship between the upper case 46 and the lower case 45 are not limited thereto as long as the upper case 46 and the lower case 45 are relatively movable.

The light emitting end 41 and the light receiving end 42 are provided on the upper casing 46. The light reflecting surface 44 is provided on the lower casing 45 to reflect the light emitted from the light emitting end 41 back to the light receiving end 42. It is of course understood that the light emitting end 41 and the light receiving end 42 may also be disposed on the lower casing 45, and the light reflecting surface 44 is disposed on the upper casing 46 to reflect light, that is, the light emitting end 41 and the light receiving end 42. Provided on one of the upper casing 46 and the lower casing 45, the light reflecting surface 44 is provided on the upper casing 46. The other side of the lower casing 45 reflects the light emitted from the light emitting end 41 back to the light receiving end 42. It is to be understood that the photoelectric sensor 4 is further provided with a control component such as a control panel connected to the light receiving end 42 , and the control component can convert the optical signal received from the light receiving end 42 into an electrical signal, the electrical signal and the light reflecting surface. The distance d between the 44 and the light emitting end 41 (light receiving end 42) is in a corresponding relationship, preferably a linear correspondence.

Specifically, the light emitted from the light emitting end 41 is reflected back to the light receiving end 42 by the light reflecting surface 44. When the weight of the clothes and water in the drum washing machine 1000 is changed, the weight of the washing tub 2 changes, and the damper cylinder 31 is The friction rod 30 slides, the deformation of the spring 43 changes at the same time, the upper casing 46 moves relative to the lower casing 45, and the distance d between the light reflecting surface 44 and the light emitting end 41 and the light receiving end 42 changes, that is, the light is changed. The optical signal reflected by the reflecting surface 44 to the light receiving end 42 is changed, so that the electrical signal transmitted from the photosensor 4 is changed, so that the electrical signal can accurately reflect the change in the weight of the drum washing machine 1000.

For example, when the weight of the laundry and the water in the washing machine increases, the weight of the washing tub 2 increases, the washing tub 2 sinks, the relative position between the damper cylinder 31 and the friction lever 30 changes, and the spring 43 in the photosensor 4 is driven. The shape variable is then reduced. The reduction in the shape of the spring 43 causes the distance d between the light reflecting surface 44 and the light emitting end 41 and the light receiving end 42 to decrease.

The drum washing machine 1000 according to an embodiment of the present invention has the following advantages:

1. By setting the photoelectric sensor 4, the control device can instantly sense the weight of the washing tub 2, and instantly determine whether the working state of the drum washing machine 1000 is normal;

2. It can directly sense the completion of drainage, start drainage immediately, and save the time of the whole washing process;

3. The dehydration imbalance can be more accurately perceived (for example, a photoelectric sensor 4 is provided on each shock absorber 3 to detect the position change of different parts of the washing tub 2), and the control device can adjust according to the sensed value;

4. It is possible to sense the weight of the clothes and achieve different amounts of clothing into different amounts of water;

5. It can sense the moisture content of the dewatering of the clothes, realize the dehydration of the moisture content of the clothes, and it is more intelligent than the existing fixed time dehydration, and can ensure that the moisture content of the clothes reaches the user's requirements after the dehydration is completed.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the above terms It is not necessary to be directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A drum washing machine, comprising:

Box

a washing tub, the washing tub being rotatably disposed in the box;

a shock absorber, the two ends of the shock absorber are respectively connected to an outer wall of the washing tub and an inner wall of the tank;

a photosensor, the photosensor being coupled to the damper, the photosensor being configured to output an electrical signal when a change in position of the wash tub, wherein the photosensor comprises an elastic member;

And a control device coupled to the photosensor to receive an electrical signal transmitted by the photosensor.
The drum washing machine according to claim 1, wherein the damper includes a friction lever and a damper cylinder, the damper cylinder being jacketed outside the friction lever and slidable relative to the friction lever, One end of the damper cylinder is connected to an outer wall of the washing tub, and one end of the friction rod is connected to an inner wall of the tank.
The drum washing machine according to claim 2, wherein the photoelectric sensor comprises:

An upper casing and a lower casing, wherein the upper casing and the lower casing are connected by an elastic member such that the upper casing and the lower casing are relatively movable up and down, the upper casing And the lower casing is respectively connected to the damper cylinder and the friction rod;

a light emitting end and a light receiving end, wherein the light emitting end and the light receiving end are disposed on one of the upper case and the lower case;

a light reflecting surface provided on the other of the upper casing and the lower casing to reflect light emitted from the light emitting end back to the light receiving end.
The drum washing machine according to claim 3, wherein both ends of the elastic member are respectively abutted against a lower surface of the upper casing and an upper surface of the light reflecting surface.
The drum washing machine according to claim 3, wherein the elastic member is a spring.
A drum washing machine according to claim 3, wherein a bottom end of said upper casing is open, a top end of said lower casing is open, and said upper casing outer casing is on said lower casing.
A drum washing machine according to claim 1, wherein said photoelectric sensor further comprises a photosensor wire connected to said control means.
A drum washing machine according to claim 1, further comprising a suspension spring, both ends of which are respectively connected to an upper portion of the inner wall of the casing and an outer wall of the washing tub.
A drum washing machine according to claim 1, wherein said photoelectric sensor comprises:

An upper casing and a lower casing, wherein the upper casing and the lower casing are connected by an elastic member such that the upper casing and the lower casing can move relatively up and down;

a light emitting end and a light receiving end, wherein the light emitting end and the light receiving end are provided in the upper case and the lower case One of them;

a light reflecting surface provided on the other of the upper casing and the lower casing to reflect light emitted from the light emitting end back to the light receiving end.