CN116770553A - Water level detection device for pulsator washing machine and pulsator washing machine - Google Patents

Abstract

The invention relates to the technical field of washing machines, and particularly discloses a water level detection device for a pulsator washing machine and the pulsator washing machine. The water level detection device for the pulsator washing machine provided by the invention has the advantages that the insulating body is arranged on the outer side wall of the inner barrel of the washing machine, the water level detection device is convenient to install, the insulating body is provided with the plurality of conductive holes, the conductive connecting pieces are arranged between the adjacent conductive holes, and as the washing water which is usually placed in the washing machine is a conductor, when the water level reaches the installation position of the insulating body, the conductive holes are filled with liquid, the plurality of conductive holes are connected in series, so that the whole detection circuit is closed and conducted, digital signals are generated, namely, the water level is judged through high and low levels, the water level information is timely acquired, the accuracy and the stability of water level detection are improved, and the digital signals are directly generated and transmitted to the controller for judgment, so that the detection efficiency is improved.

Description

Water level detection device for pulsator washing machine and pulsator washing machine

Technical Field

The invention relates to the technical field of washing machines, in particular to a water level detection device for a pulsator washing machine and the pulsator washing machine.

Background

The pulsator washing machine comprises a machine body, a door body, an outer barrel, an inner barrel, a driving system, a control system and the like, wherein the door body of the pulsator washing machine is positioned at the top of the machine body to open or close a clothes throwing opening, the outer barrel is suspended and fixed in the machine body, the inner barrel is arranged in the outer barrel, the bottom of the inner barrel is provided with a pulsator, the driving system drives the pulsator to stir clothes, and the control system controls the whole washing process of the pulsator washing machine.

Currently, the washing machine is generally controlled fully automatically, and a user only needs to put the clothes to be washed into the washing machine, select a washing mode, press a start button and start automatic washing.

In the automatic washing process, washing water needs to be injected into the inner barrel firstly, the quantity of the injected washing water is determined according to the quantity of the clothes to be washed, the corresponding water level is usually set according to the quantity of the clothes to be washed with different gears, and waste caused by excessive injection of the washing water or reduction of the cleanliness of the clothes due to the fact that the injection of the washing water is too small is avoided.

However, in the prior art, the water level detection part in the pulsator washing machine generally performs water level judgment according to the air pressure in the water pressure air pipe connected with the inside of the inner tub, and the air pressure in the water pressure air pipe is different due to different water levels, so that the purpose of judging the water level is achieved, but the detection mode is easily interfered by external factors such as temperature, sealing performance and the like, and the accuracy and stability can be affected. In order to solve the problems, in the prior art, a plurality of hall sensors are arranged on the outer wall of an outer barrel from bottom to top, a magnetic buoyancy member capable of lifting along with the water level in a washing machine is arranged on the inner wall of the outer barrel, the hall sensors and the magnetic buoyancy member are conducted at corresponding positions, and the detection mode improves accuracy and stability, but needs to carry out analog-to-digital conversion on detected data, so that control logic is complex, and detection efficiency is low.

Therefore, it is desirable to provide a water level detection device for pulsator washing machine to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a water level detection device for a pulsator washing machine and the pulsator washing machine, which have the advantages of high detection accuracy and stability, simple control logic and improved detection efficiency.

To achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a water level detection device for pulsator washing machine, sets up on the lateral wall of washing machine inner barrel, includes:

the insulation body is connected with the outer side wall of the inner barrel of the washing machine, a plurality of conductive holes are formed in the insulation body, and two of the conductive holes are connected with signal wires for connecting with other components;

the conductive connecting piece is connected with two adjacent conductive holes, one of the conductive holes is connected with the signal wire, the other conductive hole is connected with the signal wire, the conductive connecting piece is sequentially connected with the conductive holes, and when the conductive holes are filled with liquid, the conductive holes are connected in series.

As an alternative technical scheme of the water level detection device for the pulsator washing machine, the insulating body is circumferentially arranged around the outer side wall of the inner barrel of the washing machine.

As an alternative technical scheme of the water level detection device for the pulsator washing machine, a plurality of conductive holes are formed at intervals along the length direction of the insulating body.

As an alternative technical scheme of the water level detection device for the pulsator washing machine, the conducting holes at two ends of the insulating body are connected with the signal wires.

As an alternative technical scheme of the water level detection device for the pulsator washing machine, the insulating body is arranged on the inner barrel of the washing machine, and the conductive holes are correspondingly arranged with the water throwing holes on the inner barrel of the washing machine.

As an alternative technical scheme of the water level detection device for the pulsator washing machine, the conductive connecting piece is arranged on the inner side of the insulating body, and two ends of the conductive connecting piece are exposed out of the hole wall of the conductive hole.

As an alternative technical scheme of the water level detection device for the pulsator washing machine, the conductive connecting piece comprises a conductive circuit made of conductive ink, and the end part of the conductive circuit is arranged on the wall of the conductive hole.

As the optional technical scheme of the water level detection device for the pulsator washing machine, one side of the insulating body is provided with the accommodating groove, the conductive connecting piece is arranged in the accommodating groove, the portion of the conductive connecting piece in the accommodating groove is insulated from the outside, and two ends of the conductive connecting piece are exposed out of the hole wall of the conductive hole.

As an alternative technical scheme of the water level detection device for the pulsator washing machine, the walls of the conductive holes are provided with conductive layers.

A pulsator washing machine comprising the water level detection device for a pulsator washing machine as claimed in any one of the above.

The invention has the beneficial effects that:

the water level detection device for the pulsator washing machine provided by the invention has the advantages that the insulating body is arranged on the outer side wall of the inner barrel of the washing machine, the water level detection device is convenient to install, the insulating body is provided with the plurality of conductive holes, the conductive connecting pieces are arranged between the adjacent conductive holes, and as the washing water which is usually placed in the washing machine is a conductor, when the water level reaches the installation position of the insulating body, the conductive holes are filled with liquid, the plurality of conductive holes are connected in series, so that the whole detection circuit is closed and conducted, digital signals are generated, namely, the water level is judged through high and low levels, the water level information is timely acquired, the accuracy and the stability of water level detection are improved, and the digital signals are directly generated and transmitted to the controller for judgment, so that the detection efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of a drum-mounted water level detection device in a pulsator washing machine according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a water level detection apparatus according to an embodiment of the present invention;

fig. 3 is an enlarged schematic view of a portion of fig. 2.

In the figure:

100. an inner tub of the washing machine; 101. a water throwing hole;

1. an insulating body; 2. a conductive hole; 3. a conductive connection; 4. and a signal line.

Detailed Description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Aiming at the problems that in the prior art, the water level is judged according to the air pressure in a water pressure air pipe connected with the inside of an inner barrel, and the accuracy and the stability are easily interfered by the outside; or the Hall sensor and the magnetic buoyancy member are conducted at the corresponding position to judge the water level, so that the problems of complex control logic and low detection efficiency exist in the need of carrying out analog-to-digital conversion on detected data. In order to solve the above problems, the present embodiment provides a water level detection device for pulsator washing machine and pulsator washing machine to solve the above problems.

Currently, the commonly used full-automatic washing machines mainly comprise two types, namely a pulsator washing machine and a drum washing machine. The pulsator washing machine is characterized in that an inner drum capable of rotating around the central axis of the drum is arranged in a washing drum (hereinafter, the washing drum is called an outer drum), a disc pulsator capable of coaxially rotating with the inner drum is arranged at the bottom of the inner drum, the rotating shafts of the inner drum and the disc pulsator are perpendicular to the ground, and the disc pulsator is provided with protruding ribs. In the washing process, the water flow is driven to rotate mainly by the rotation of the pulsator, and the water flow in the barrel forms vortex which is timely right-handed and timely left-handed and drives the fabric to rotate and roll, so that dirty objects on clothes can be removed.

Fig. 1 is a schematic view of a drum-mounted water level detecting device in a pulsator washing machine according to the present embodiment;

fig. 2 is a schematic structural view of the water level detecting apparatus provided in the present embodiment; fig. 3 is a partially enlarged schematic view of the water level detecting apparatus provided in the present embodiment.

As shown in fig. 1 to 3, the pulsator washing machine provided in this embodiment includes an outer tub mounted in a casing of the pulsator washing machine, an inner tub 100 of the washing machine is coaxially disposed in the outer tub, and a plurality of water throwing holes 101 are formed in the inner tub 100 of the washing machine, so that the inner tub 100 of the washing machine is communicated with the outer tub, so that washing water circulates in the inner tub 100 of the washing machine or the washing machine performs a dehydration operation. The pulsator is provided at the bottom of the inner tub 100 of the washing machine, and is driven to rotate by a driving motor.

When a user uses the full-automatic pulsator washing machine, after a corresponding washing program is selected according to clothes to be washed, the washing machine generally judges the quantity of the clothes to be washed, judges the quantity of washing water required according to the quantity of the clothes to be washed, injects the washing water into the inner barrel 100 of the washing machine after determining the quantity of the washing water required, stops injecting the water into the inner barrel 100 of the washing machine after detecting that the washing water is injected to a preset position, avoids waste caused by excessive washing water or influences the washing effect due to the too little washing water, and then starts executing the washing program.

How to determine whether the washing water injected into the tub 100 of the washing machine reaches a preset position as described above generally requires detection using a device for detecting a liquid level. In the present embodiment, a water level detecting means for detecting the water level of the washing water is provided on the outer sidewall of the inner tub 100 of the washing machine.

When the inner tub 100 and the outer tub of the washing machine are assembled, a gap is usually formed between the inner tub 100 and the outer tub of the washing machine, so that the water level detection device provided by the embodiment is installed on the outer side wall of the inner tub 100 of the washing machine, does not occupy the inner space of the inner tub 100 of the washing machine, does not affect the rotation of the inner tub 100 of the washing machine relative to the outer tub, and can accurately and stably detect the water level signal.

Specifically, the water level detection device for the pulsator washing machine provided by the embodiment comprises an insulating body 1, wherein the insulating body 1 is connected with the outer side wall of the inner barrel 100 of the washing machine, the insulating body 1 is made of insulating materials and can be directly installed on the inner barrel 100 of the washing machine, the insulating body 1 is convenient to install and is arranged in an insulating mode with the inner barrel 100 of the washing machine, and a part for fixing the insulating body 1 is not required to be additionally arranged, so that production cost is reduced.

The insulating body 1 is provided with a plurality of conductive holes 2, wherein, two conductive holes 2 are connected with a signal wire 4, and the signal wire 4 is used for being connected with other parts of a control circuit so as to form a control loop. The conductive connecting piece 3 is connected between two adjacent conductive holes 2, and one conductive hole 2 connected with the signal wire 4 in the plurality of conductive holes 2 is connected with the other conductive hole 2 connected with the signal wire 4 in sequence by the conductive connecting piece 3, and as the washing water usually placed in the washing machine is a conductor, when the plurality of conductive holes 2 are filled with liquid, the plurality of conductive holes 2 are connected in series, so that the whole detection circuit is closed, and signals are generated to the controller. The generated signals are digital signals, namely, the water level is judged through the high and low levels, the water level information is timely obtained, the accuracy and stability of water level detection are improved, the digital signals are directly generated and transmitted to the controller for the controller to judge, and the detection efficiency is improved.

The material of the insulating body 1 can be plastic, silica gel, rubber and the like, so the insulating body 1 has certain toughness, can adapt to the radian of the inner barrel 100 of the washing machine to generate deformation during installation, and enables the water level detection device to have applicability and be installed on the inner barrel 100 of the washing machine with different sizes. Or the insulator 1 is formed as a part matching the surface curvature of the tub 100 in the washing machine so as to mount the insulator 1.

The amount of the washing water required is different for different washing modes or different laundry amounts, and thus, a plurality of water level detecting devices are required to be provided at intervals from bottom to top along the axial direction of the inner tub 100 of the washing machine to satisfy different use demands. Specifically, the number of water level detecting devices and the installation positions are set according to actual use requirements, and are not particularly limited herein.

In order to improve the accuracy of water level detection, the insulating body 1 is circumferentially disposed around the outer sidewall of the inner tub 100 of the washing machine.

Since laundry is piled up at one side of the inner tub 100 of the washing machine, the inner tub 100 of the washing machine is inclined toward the piled up side, if the insulating body 1 is partially provided at the inner tub 100 of the washing machine when washing water is injected into the inner tub 100 of the washing machine, there are cases where the injected washing water is too much or overflows even when the washing water reaches the amount of the desired washing water but the water level detecting means has detected a signal, and thus the injected washing water is too little to affect the washing effect, and thus the insulating body 1 is circumferentially provided around the outer sidewall of the inner tub 100 of the washing machine.

In another embodiment, a plurality of insulating bodies 1 can be arranged at the same height of the outer side wall of the inner tub 100 of the washing machine at intervals along the circumferential direction of the inner tub 100 of the washing machine, and the inner tub 100 of the washing machine can also timely detect a water level signal when toppling over, so that excessive or insufficient injected washing water is avoided. Meanwhile, the multi-layer insulation body 1 is arranged along the axial direction of the inner tub 100 of the washing machine, so as to be suitable for detecting the requirements of different washing water amounts required by different washing modes or different amounts of clothes to be washed.

In order to facilitate processing of the conductive holes and to improve the accuracy of water level detection, it is preferable that the plurality of conductive holes 2 are arranged at intervals along the length direction of the insulating body 1, and when the water level is over the plurality of conductive holes 2 on the same horizontal line, a water level detection signal is generated, and the water level detection accuracy is high.

Preferably, the signal wires 4 are connected to the conductive holes 2 at two ends of the insulator body 1, the conductive holes 2 at one end are sequentially connected to the conductive holes 2 at the other end by the conductive connecting pieces 3, the connection structure of the conductive connecting pieces 3 is simplified, and the conductive connecting pieces for connecting two adjacent conductive holes 2 are sequentially arranged from one end of the insulator body 1 to the other end, so that the arrangement of the conductive connecting pieces 3 is facilitated.

When the insulating body 1 is installed on the outer side wall of the inner tub 100 of the washing machine, a guide groove is formed in one side, close to the outer side wall of the inner tub 100 of the washing machine, of the insulating body 1, the signal wire 4 penetrates through the guide groove to extend to the bottom of the inner tub 100 of the washing machine so as to be connected with other parts, an installation mode is provided for the signal wire 4, and the signal wire 4 is prevented from being messy so as to influence the installation and the work of the inner tub 100 of the washing machine.

In this embodiment, the conductive connecting piece 3 is disposed inside the insulating body 1, and two ends of the conductive connecting piece 3 are exposed from the wall of the conductive hole 2. The conductive connecting member 3 has conductive performance, so in order to avoid conductive connection of the conductive connecting member 3 with other components, the conductive connecting member 3 is disposed inside the insulating body 1, and the insulating body 1 plays an insulating role.

In production, the insulating body 1 may be configured as a two-layer structure, at least one conductive connecting member 3 is processed on one insulating body 1, and then the two insulating bodies 1 are connected together, and may be connected in a suitable manner according to the specific material of the insulating body 1, which is not particularly limited herein. After the two layers of insulating bodies 1 are connected, the conductive holes 2 are processed on the insulating bodies 1, meanwhile, the conductive connecting piece 3 is segmented into a plurality of sections of conductive connecting pieces 3, namely, the conductive connecting pieces 3 are connected with two adjacent conductive holes 2, and two ends of each segmented conductive connecting piece 3 are exposed at the hole wall of each conductive hole 2 so as to contact liquid entering the conductive holes 2, so that conductive communication is realized.

Optionally, the conductive connecting piece 3 comprises a conductive line made of conductive ink, and the end of the conductive line is placed on the wall of the conductive hole 2, so that the processing technology is simple and easy to implement.

In another embodiment, the conductive connecting member 3 includes a metal wire, a groove is formed in one of the insulating bodies 1 of the two-layer structure, the metal wire is placed in the groove, or the metal wire may be directly placed between the two insulating bodies 1, and then the two insulating bodies 1 are connected together. After the two layers of insulating bodies 1 are connected, the conducting holes 2 are processed on the insulating bodies 1, meanwhile, the metal wires are segmented into a plurality of sections of metal wires, the metal wires are connected with two adjacent conducting holes 2, the end parts of the segmented metal wires are exposed out of the hole walls of the conducting holes 2, and when the conducting holes 2 are filled with liquid, conducting communication is realized.

In other embodiments, a receiving groove is formed on one side of the insulating body 1, the conductive connecting piece 3 is disposed in the receiving groove, and the portion of the conductive connecting piece 3 disposed in the receiving groove is insulated from the outside, and both ends of the conductive connecting piece 3 are exposed from the wall of the conductive hole 2. The arrangement mode of the conductive connecting piece 3 provided by the embodiment can enable the insulating body 1 to be of an integrated structure, and the processing technology of the insulating body 1 is simplified. In order to avoid the conductive connection of the conductive connection member 3 with other components and to influence the detection effect, the portion of the conductive connection member 3 exposed to the outside is insulated from the outside.

The conductive connecting piece 3 comprises a wire, the wire comprises a metal wire core and an insulating sheath wrapped outside the metal wire core, the part of the wire placed in the accommodating groove is provided with the insulating sheath, the end part of the wire protrudes out of the hole wall of the conductive hole 2 or is flush with the hole wall of the conductive hole 2, and the conductive end part exposes the metal wire core so as to realize conductive connection.

The insulating body 1 can be fixed on the outer side wall of the inner tub 100 of the washing machine by means of bonding, and the connection mode is simple and easy to implement. Of course, the insulating body 1 may be connected to the inner tub 100 of the washing machine in other ways, which is not particularly limited herein.

The insulating body 1 is installed on the inner tub 100 of the washing machine, preferably, the conductive hole 2 on the insulating body 1 is correspondingly arranged with the water throwing hole 101 on the inner tub 100 of the washing machine, so that when the water level in the inner tub 100 of the washing machine reaches a preset water level, washing water flows out of the inner tub 100 of the washing machine through the water throwing hole 101, and the conductive hole 2 is filled with the washing water in time, so that the detection efficiency of the water level detection device is improved.

Of course, the conductive hole 2 on the insulating body 1 may not be provided corresponding to the water throwing hole 101, and the water level detection device may also detect the water level.

In order to improve the detection efficiency and the detection precision, the hole walls of the conductive holes 2 are provided with conductive layers. The conducting layer is connected with the conducting connecting piece 3 in a conducting manner, when the conducting layer of each conducting hole 2 contacts with liquid, the conduction of the whole detection circuit can be realized, the controller receives the water level signal detected by the water level detection device, water injection into the washing machine is stopped, the reaction rate and the control precision are improved, and excessive injected water is avoided.

The conductive layer may be a conductive ink layer, a metal layer, or the like, and may have a conductive property, and is not particularly limited herein.

The pulsator washing machine provided by the embodiment further comprises an alarm assembly, the alarm assembly is electrically connected with a controller of the washing machine, if excessive or insufficient water injected into the inner tub 100 of the washing machine is detected, the pulsator washing machine is stopped in an emergency and alarms through the alarm assembly, information is fed back to a user in time, and the user acquires overflow or water shortage information in the shortest time and relieves faults.

The water level detection device provided by the embodiment is applied to the pulsator washing machine, and can be used for rapidly and accurately detecting the water level, so that the washing time is shortened, the use cost is reduced, and the use satisfaction of users is improved.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a water level detection device for pulsator washing machine, sets up on the lateral wall of washing machine inner tub (100), its characterized in that includes:

the washing machine comprises an insulating body (1) connected with the outer side wall of an inner barrel (100) of the washing machine, wherein a plurality of conductive holes (2) are formed in the insulating body (1), and two conductive holes (2) are connected with signal wires (4) used for being connected with other components;

the conductive connecting piece (3) is connected with two adjacent conductive holes (2), one of the conductive holes (2) is connected with the signal wire (4), the other conductive hole (2) connected with the signal wire (4) is sequentially connected with the conductive connecting piece (3), and when the conductive holes (2) are filled with liquid, the conductive holes (2) are connected in series.

2. The water level detection device for pulsator washing machine according to claim 1, wherein the insulating body (1) is circumferentially arranged around an outer side wall of the inner tub (100) of the washing machine.

3. The water level detection device for pulsator washing machine according to claim 1, wherein the plurality of conductive holes (2) are provided at intervals along the longitudinal direction of the insulating body (1).

4. A water level detection device for pulsator washing machine according to claim 3, characterized in that the conductive holes (2) at both ends of the insulating body (1) are connected with the signal line (4).

5. The water level detection device for pulsator washing machine according to any one of claims 1 to 4, wherein the insulating body (1) is provided on the washing machine inner tub (100), and the conductive hole (2) is provided corresponding to a water throwing hole (101) on the washing machine inner tub (100).

6. The water level detection device for the pulsator washing machine according to claim 1, wherein the conductive connecting piece (3) is arranged on the inner side of the insulating body (1), and two ends of the conductive connecting piece (3) are exposed out of the hole wall of the conductive hole (2).

7. The water level detection device for pulsator washing machine according to claim 6, characterized in that the conductive connection piece (3) comprises a conductive line made of conductive ink, the end of which is placed on the wall of the conductive hole (2).

8. The water level detection device for the pulsator washing machine according to claim 1, wherein a containing groove is formed in one side of the insulating body (1), the conductive connecting piece (3) is arranged in the containing groove, a portion, placed in the containing groove, of the conductive connecting piece (3) is insulated from the outside, and two ends of the conductive connecting piece (3) are exposed out of the wall of the conductive hole (2).

9. The water level detection device for pulsator washing machine according to any one of claims 6 to 8, wherein the walls of the conductive holes (2) are provided with conductive layers.

10. A pulsator washing machine, characterized by comprising the water level detecting device for pulsator washing machine as claimed in any one of claims 1 to 9.