CN114182486A

CN114182486A - Fault detection method, device and equipment of clothes treatment equipment

Info

Publication number: CN114182486A
Application number: CN202111367766.XA
Authority: CN
Inventors: 颜灵智; 王开明; 谢红伟
Original assignee: Shanghai Haier Washing Electric Appliance Co ltd; Haier Smart Home Co Ltd
Current assignee: Shanghai Haier Washing Electric Appliance Co ltd; Haier Smart Home Co Ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-03-15

Abstract

The application belongs to the technical field of household appliances, and particularly relates to a method, a device and equipment for detecting faults of clothes treatment equipment. The problem that drain pump fault detection accuracy is poor among the prior art is aimed at solving to this application. The application provides a method, a device and equipment for detecting faults of clothes treatment equipment. The drainage pump can monitor the fault state of the drainage pump and the fault state of the filter element at the same time, has a simple structure, and does not need to be provided with a detection device respectively; the detection time is short, the accuracy is high, the fault state of the drainage pump and the fault state of the filter element in the current drainage process of the user can be timely prompted, the user can be facilitated to timely perform treatment, and then the working efficiency of the clothes treatment equipment is improved.

Description

Fault detection method, device and equipment of clothes treatment equipment

Technical Field

The application relates to the technical field of household appliances, in particular to a method, a device and equipment for detecting faults of clothes treatment equipment.

Background

With the development of household appliance technology, clothes treatment equipment, such as washing machines, washing and drying integrated machines and the like, is more and more intelligent, and the judgment and prompt of faults are continuously upgraded. Generally, a laundry treating apparatus is provided with a drain pump, and a filter is provided upstream of the drain pump to filter drain water, so that a trouble caused by foreign substances such as lint being entangled in the drain pump is prevented, and thus the filter needs to be periodically cleaned.

Generally, the laundry treating apparatus is provided with a malfunction detecting device only at the drain pump to detect whether the drain pump malfunctions. Specifically, whether the drainage pump has a fault is determined according to comprehensive calculation of drainage time, drainage flow and other factors, so that the detection time is long, and the timeliness is poor; and the accuracy is poor. The filter is easily ignored and cleaned when being shielded by the filter cabin door or the machine shell, and the filter can be cleaned after the drainage pump is in failure, so that the normal operation of the clothes treatment equipment is influenced.

Disclosure of Invention

The embodiment of the application provides a method, a device and equipment for detecting faults of clothes treatment equipment, and is used for solving the technical problem that in the prior art, the accuracy of detecting the faults of a drainage pump is poor.

In a first aspect, an embodiment of the present application provides a method for detecting a malfunction of a laundry treatment apparatus, the laundry treatment apparatus including a drain filter device, the drain filter device including a housing, a drain pump, and a filter element, the housing having a filter chamber, a drain chamber, and a transition chamber communicating the filter chamber and the drain chamber, the filter element being installed in the filter chamber, and at least a portion of the drain pump being installed in the drain chamber; the laundry treating apparatus further includes a prompter; the method comprises the following steps:

acquiring a pressure value of the transition cavity;

determining the fault state of the drainage pump and the fault state of the filter element according to the pressure value and a preset target threshold value set; the target threshold set comprises a plurality of target thresholds;

and controlling the prompter to send a prompt signal according to the fault state of the drainage pump and the fault state of the filter element.

In a possible embodiment, said determining the fault status of the drain pump and the fault status of the filter cartridge according to the pressure values and a preset target threshold set comprises:

determining a fault state of the drain pump according to the pressure value and the target threshold set when the pressure value is greater than or equal to a first target threshold; the first target threshold belongs to the set of target thresholds and the first target threshold is less than zero;

and when the pressure value is smaller than the first target threshold value, determining the fault state of the filter element according to the pressure value and the target threshold value set.

In a possible embodiment, the determining the fault state of the drain pump according to the pressure value and the target threshold value set when the pressure value is greater than or equal to a first target threshold value includes:

when the pressure value is greater than or equal to the first target threshold value and is less than zero, determining that the fault state of the drainage pump is a primary fault state;

and when the pressure value is greater than or equal to zero, determining that the fault state of the drainage pump is a secondary fault state.

In one possible embodiment, the annunciator includes a first light set including a first indicator light and a second indicator light;

the controlling the prompter to send out a prompt signal according to the fault state comprises:

when the fault state of the drainage pump is determined to be a primary fault state, controlling the first indicator lamp to emit first color light;

and when the fault state of the drainage pump is determined to be a secondary fault state, controlling the second indicator lamp to emit light of a second color.

In a possible embodiment, the determining the fault state of the filter element according to the pressure value and the target threshold value set when the pressure value is smaller than the first target threshold value includes:

when the pressure value is greater than or equal to a second target threshold and smaller than the first target threshold, determining that the fault state of the filter element is a primary blockage state;

when the pressure value is greater than or equal to a third target threshold and smaller than the second target threshold, determining that the fault state of the filter element is a secondary blockage state;

when the pressure value is smaller than the third target threshold value, determining that the fault state of the filter element is a three-stage blockage state;

wherein the second target threshold and the third target threshold both belong to the set of target thresholds, and the second target threshold is smaller than the first target threshold, and the third target threshold is smaller than the second target threshold.

In a possible implementation, the prompter further comprises a second lamp set, wherein the second lamp set comprises a third indicator lamp, a fourth indicator lamp and a fifth indicator lamp;

when the filter element is blocked at the first stage, controlling the third indicator lamp to emit light of a third color;

when the filter element is blocked in the second stage, the fourth indicator lamp is controlled to emit light of a fourth color;

and when the filter element is blocked in three stages, controlling the fifth indicator light to emit light of a fifth color.

In a possible embodiment, the obtaining the pressure value of the transition chamber includes:

when the drainage pump is started for a preset time and the difference value between the input voltage and the rated voltage of the drainage pump is within a preset range, acquiring the pressure value of the transition cavity;

alternatively, the first and second electrodes may be,

and when the difference value between the current power of the drainage pump and the rated power of the drainage pump is determined to be within a preset range, and the difference value between the input voltage of the drainage pump and the rated voltage is determined to be within the preset range, acquiring the pressure value of the transition cavity.

In a second aspect, an embodiment of the present application provides a fault detection device for a laundry treatment apparatus, the laundry treatment apparatus including a drain filtering device, the drain filtering device including a housing, a drain pump, and a filter element, the housing being provided with a filter chamber, a drain chamber, and a transition chamber communicating the filter chamber and the drain chamber, the filter element being installed in the filter chamber, and at least a portion of the drain pump being installed in the drain chamber; the laundry treating apparatus further includes a prompter; the failure detection device of the clothes treatment equipment comprises an acquisition module, a determination module and a control module, wherein:

the acquisition module is used for acquiring the pressure value of the transition cavity;

the determining module is used for determining the fault state of the drainage pump and the fault state of the filter element according to the pressure value and a preset target threshold value set; the target threshold set comprises a plurality of target thresholds;

the control module is used for controlling the prompter to send out a prompt signal according to the fault state of the drainage pump and the fault state of the filter element.

In some possible implementations, the determining module is specifically configured to,

In some possible implementations, the prompter includes a first light group including a first indicator light and a second indicator light;

the control module is specifically configured to control the first indicator light to emit a first color light when it is determined that the fault state of the drain pump is a primary fault state; and when the fault state of the drainage pump is determined to be a secondary fault state, controlling the second indicator lamp to emit light of a second color.

In some possible implementations, the determining module is specifically configured to determine that the fault state of the filter element is a primary clogging state when the pressure value is greater than or equal to a second target threshold and smaller than the first target threshold;

In some possible implementations, the prompter further includes a second light group, the second light group including a third indicator light, a fourth indicator light, and a fifth indicator light; the control module is specifically used for controlling the third indicator light to emit light of a third color when the filter element is blocked at a first level; when the filter element is blocked in the second stage, the fourth indicator lamp is controlled to emit light of a fourth color; and when the filter element is blocked in three stages, controlling the fifth indicator light to emit light of a fifth color.

In some possible implementations, the obtaining module is specifically configured to obtain the pressure value of the transition cavity when the drain pump is turned on for a preset time and a difference value between an input voltage of the drain pump and a rated voltage is within a preset range; or when the difference value between the current power of the drainage pump and the rated power of the drainage pump is determined to be within a preset range and the difference value between the input voltage of the drainage pump and the rated voltage is determined to be within the preset range, acquiring the pressure value of the transition cavity.

In a third aspect, an embodiment of the present application provides a laundry treating apparatus, including: a processor, a memory;

the memory stores a computer program;

the processor executes the computer program stored in the memory to realize the fault detection method of the clothes treatment device according to any one of the first aspect.

In a fourth aspect, embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium has stored thereon computer-executable instructions; the computer executed instructions are used for realizing the fault detection method of the clothes treatment equipment according to any embodiment.

In a fifth aspect, the present application further provides a computer program product, which includes a computer program that, when executed by a processor, implements the method for detecting a fault of a laundry treatment apparatus according to any of the above embodiments.

The method for detecting the fault state of the clothes treatment equipment comprises a drainage filtering device, wherein the drainage filtering device comprises a shell, a drainage pump and a filter element, the shell is provided with a filter cavity, a drainage cavity and a transition cavity communicated with the filter cavity and the drainage cavity, the filter element is installed in the filter cavity, and at least part of the drainage pump is installed in the drainage cavity; the laundry treating apparatus further includes a prompter. According to the fault state detection method of the clothes treatment equipment, the fault state of the drainage pump and the fault state of the filter element are determined through the pressure value of the transition cavity and the preset target threshold value set, and the prompting device is controlled to send out the prompting signal according to the fault state of the drainage pump and the fault state of the filter element, so that a user can timely make treatment. The drainage pump fault state monitoring device can monitor the fault state of the drainage pump, the fault state and the fault grade of the filter element at the same time, is simple in structure, and does not need to be provided with a detection device respectively; the detection time is short, the accuracy is high, the fault state of the drainage pump and the fault state of the filter element in the current drainage process of the user can be timely prompted, the user can be facilitated to timely perform treatment, and then the working efficiency of the clothes treatment equipment is improved.

Drawings

Fig. 1 is a sectional view of a drain water filtering device of a laundry treating apparatus according to an embodiment of the present application;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a method for detecting a malfunction of a laundry treating apparatus according to an embodiment of the present application;

fig. 4 is a method for detecting a malfunction of a clothes treating apparatus according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a prompter provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a fault detection device of a clothes treating apparatus according to an embodiment of the present application;

fig. 7 is a schematic diagram of a hardware structure of a clothes treatment apparatus according to an embodiment of the present application.

Description of reference numerals:

101: a housing; 102: draining pump; 1021: an impeller; 103: a filter element; 104: a filter chamber; 1041: a water inlet; 105: a drainage cavity; 1051: a water outlet; 106: a transition chamber; 107: an air pressure sensor.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, the same numbers in different drawings represent the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the related art, a drain pump and a filter of a laundry treating apparatus are generally provided together to facilitate filtering of drain water, and to prevent impurities such as lint from being entangled with the drain pump to cause malfunction. The filter is shielded by the cartridge door or cabinet and is easily ignored by most users without cleaning. The user knows that the filter needs to be cleaned only after the fault of the drainage pump is detected by the fault detection device of the drainage pump. Before the drainage pump fails, the accumulated thread scraps in the filter are increased along with the increase of washing periods, in particular to a washing and drying integrated machine. Most of the drum washing machines adopt an upper drainage structure, impurities such as thread scraps, dust and the like are easily mildewed, deteriorated and blackened after being soaked in water for a long time, and are mixed with washing water to wash clothes during next washing, so that the sanitation and health of the clothes are affected. When the filter clogging does not cause the drain pump malfunction, the drain time of the drain pump is prolonged, resulting in a prolonged washing time. It is therefore necessary to clean the filter in a timely manner.

Some users know that the filter needs to be cleaned, but cannot determine when the filter needs to be cleaned, particularly for a drum washing machine, the installation position of the filter is complicated, and the user finds that the filter does not need to be cleaned after opening, which wastes time and energy. Sometimes, after the drainage becomes slow or the drainage is not performed, whether the filter is blocked or the drainage pump is in fault cannot be determined, and if the user opens the filter to find that the drainage pump is in fault, the filter cannot be processed; if the filter is found to be blocked after sale, not only is maintenance resources wasted, but also the use is influenced.

Some fault detection devices of the drainage pump comprehensively calculate according to factors such as drainage time, drainage flow and the like to determine whether the drainage pump has a fault, so that the detection time is long, and the timeliness is poor; and the accuracy is poor.

In view of this, the clothes treatment apparatus provided by the embodiment of the present application includes a drainage filtering device, the drainage filtering device includes a housing, a drainage pump and a filter element, the housing is provided with a filter cavity, a drainage cavity and a transition cavity communicating the filter cavity and the drainage cavity, the filter element is installed in the filter cavity, at least a part of the drainage pump is installed in the drainage cavity, and an air pressure sensor is installed in the transition cavity; and detecting the pressure value of the transition cavity through the air pressure sensor, and determining the fault state of the filter element and the fault state of the drainage pump according to the relation between the pressure value and the target threshold value.

Specifically, when the pressure value is greater than or equal to zero, the fault state of the drainage pump is determined to be a secondary fault state, and the second indicator lamp is controlled to emit second color light to prompt a user that the drainage pump needs to be maintained; when the pressure value is greater than or equal to the first target threshold value and the pressure value is less than zero, the fault state of the drainage pump is determined to be a primary fault state, the first indicator lamp is controlled to emit first color light, and a user is prompted that the drainage pump has slight fault, and the drainage pump can be maintained or not maintained temporarily. The first target threshold is negative pressure, and the first target threshold is smaller than zero.

When the pressure value is greater than or equal to the second target threshold value and the pressure value is smaller than the first target threshold value, the fault state of the filter element is determined to be a first-stage blocking state, the third indicator lamp is controlled to emit third color light, the user is prompted that the filter element is slightly blocked, and the filter element is not required to be cleaned. Wherein the second target threshold is less than the first target threshold.

When the pressure value is greater than or equal to the third target threshold value and the pressure value is less than the second target threshold value, the fault state of the filter element is determined to be a second-stage blocking state, the fourth indicator lamp is controlled to emit fourth color light, the filter element is prompted to be moderately blocked, the filter element can be cleaned, and the filter element can not be cleaned at the moment, so that the drainage speed can only be influenced. Wherein the third target threshold is less than the second target threshold.

When the pressure value is smaller than the third target threshold value, the fault state of the filter element is determined to be a three-stage blocking state, the fifth indicator lamp is controlled to emit fifth color light, the user is prompted that the filter element is seriously blocked, and the filter element needs to be cleaned.

In the process, the pressure of the transition cavity is detected by the air pressure sensor, so that the fault states of the drainage pump and the filter element can be monitored simultaneously, the structure is simple, and detection devices do not need to be arranged respectively; the detection time is short, the accuracy is high, the states of the drainage pump and the filter element in the current drainage process of the user can be timely prompted, the user can conveniently and timely perform treatment, and the working efficiency of the clothes treatment equipment is improved.

Next, with reference to fig. 1 and 2, a drain water filtering device of a laundry treating apparatus according to an embodiment of the present application will be described. Fig. 1 is a sectional view of a drain water filtering device of a laundry treating apparatus according to an embodiment of the present application; fig. 2 is a sectional view taken along line a-a of fig. 1.

Referring to fig. 1 and 2, the laundry treating apparatus includes a drain filter device including a case 101, a drain pump 102, and a filter cartridge 103, the case 101 is provided with a filter chamber 104, a drain chamber 105, and a transition chamber 106 communicating the filter chamber 104 and the drain chamber 105, the filter cartridge 103 is installed in the filter chamber 104, the filter cartridge 103 forms a filter with the case forming the filter chamber 106, and at least a portion of the drain pump 102 is installed in the drain chamber 105.

The housing 101 may include a tube and an end cap, which are hermetically connected, and form a filter chamber 104, a drain chamber 105, and a transition chamber 106, so as to facilitate installation of the drain pump 102 and the filter cartridge 103.

In the embodiment of the present application, a drainage port 1051 is disposed on a sidewall of the drainage cavity 105, the drainage pump 102 includes a motor and an impeller 1021, the impeller 1021 is installed in the drainage cavity 105, and the motor is connected to the impeller 1021 through an output shaft, so as to drive the pressing wheel 1021 to rotate, thereby driving water in the drainage cavity 105 to be drained through the drainage port 1051.

With continued reference to fig. 1 and 2, a water inlet 1041 is provided on a side wall of the filter cavity 104, and water in the drum of the clothes treatment apparatus enters the filter cavity 104 through the pipe and the water inlet 1041, and after impurities such as thread scraps are filtered by the filter element 103, the water enters the drainage cavity 105 through the transition cavity 106.

The diameter of the transition chamber 106 is smaller than the diameter of the filter chamber 104 in order to accommodate the filter cartridge 103 for filtering lint and other contaminants.

A mounting hole is provided in a side wall of the transition chamber 106 for mounting an air pressure sensor 107 to detect the air pressure of the transition chamber 106.

When the drainage pump 102 is working normally and the filter element 103 is not in a blocked state, after water entering the water inlet 1041 is filtered by the filter element 103, under the actions of resistance, inner wall friction and the like of the filter element 103, the instantaneous drainage quantity of the drainage outlet 1051 is larger than the instantaneous water inflow quantity of the water inlet 1041, so that the transition cavity 106 generates negative pressure, and the negative pressure at this time is defined as a standard negative pressure value.

As the washing cycle of the clothes treatment equipment is increased, the thread scraps filtered by the filter element 103 are accumulated continuously, the resistance is increased, and the negative pressure of the transition cavity 106 is increased; the state of clogging of the filter insert 103 can thus be determined from the amount of negative pressure in the transition chamber 106 which is increased relative to the standard negative pressure.

When the motor of the drainage pump 102 fails, the rotation speed of the impeller 1021 is reduced, the instantaneous water discharge amount of the water discharge opening 1051 is smaller than the instantaneous water inlet amount of the water inlet 1041, so that the negative pressure of the transition cavity 106 is reduced, even the positive pressure occurs in the transition cavity 106, and the fault state of the drainage pump 102 is determined according to the negative pressure amount of the standard negative pressure value reduction.

In the process, the pressure sensor 107 is used for detecting the pressure of the transition cavity 106, so that the fault states of the drainage pump 102 and the filter element can be monitored simultaneously, the structure is simple, and detection devices do not need to be arranged respectively; the detection time is short, the accuracy is high, the states of the drainage pump and the filter element in the current drainage process of the user can be timely prompted, the user can conveniently and timely perform treatment, and the working efficiency of the clothes treatment equipment is improved.

The technical means shown in the present application will be described in detail below with reference to specific examples. It should be noted that the following embodiments may exist alone or in combination with each other, and description of the same or similar contents is not repeated in different embodiments.

Fig. 3 is a schematic flowchart of a method for detecting a failure of a laundry processing apparatus according to an embodiment of the present application. Referring to fig. 3, the method may include:

s301, obtaining the pressure value of the transition cavity.

The execution main body of the embodiment of the application can be a clothes treatment device, and can also be a control device of the clothes treatment device arranged in the clothes treatment device. Alternatively, the control device of the laundry treating apparatus may be implemented by software, or may be implemented by a combination of software and hardware.

With reference to fig. 1 and fig. 2, in the embodiment of the present application, the pressure value of the transition chamber 106 is obtained by installing an air pressure sensor 107 on the sidewall of the transition chamber 106.

In some implementations, the pressure value of the transition chamber 106 detected by the air pressure sensor 107 is obtained when the drain pump 102 is turned on for a preset time and the difference between the input voltage of the drain pump 102 and the rated voltage is within a preset range. This is because the pressure value of the transition chamber 106 detected by the air pressure sensor 107 is positive pressure when the wash water is already filled in the filter chamber 104, the transition chamber 106, and the drain chamber 105 before the drain pump 102 is turned on, which is likely to cause erroneous detection. After the drainage pump is started for the preset time, the drainage state of the drainage pump 102 is stable, so that the accuracy of pressure value detection can be improved, and further, the detection of the fault state of the drainage pump 102 and the fault state of the filter element is improved.

In other implementations, the pressure value of the transition chamber 106 detected by the air pressure sensor 107 is obtained when it is determined that the difference between the current power of the drain pump 102 and the rated power of the drain pump 102 is within a preset range and the difference between the input voltage of the drain pump 102 and the rated voltage is within the preset range. When the current power of the drain pump 102 reaches the rated power, the working state of the drain pump 102 is relatively stable, and the accuracy of detecting the pressure value can be improved, so that the accuracy of detecting the fault state of the drain pump 102 and the fault state of the filter element 103 is improved.

During the latter stage of the drainage, the water level in the transition chamber 106 drops seriously, the resistance of the drainage pump 102 decreases and the power decreases, where the air is communicated with the outside, and the pressure value detected by the air pressure sensor 107 approaches zero; at the end of the draining by the draining pump 102, for the clothes treating apparatus with upper draining, part of the water in the draining pipe will flow back again to submerge the air pressure sensor 107, and the pressure value detected by the air pressure sensor 107 is positive pressure, i.e. greater than zero. Both of the two situations can cause the erroneous judgment of the fault state, and therefore, the pressure value of the transition cavity 106 detected by the air pressure sensor 107 is obtained when the difference value between the current power and the rated power of the drain pump 102 is within the preset range after the drainage is started, which is beneficial to improving the accuracy of the fault state detection.

Under normal conditions, the input voltage of the drain pump 102 is a nominal voltage 220V, i.e. the mains voltage. However, the utility power may be unstable or the input voltage of the drain pump 102 may be affected by a user's large-power electric appliance. Therefore, in the two manners of obtaining the transition cavity pressure value in the embodiment of the present application, the input voltage of the drain pump 102 is determined to be stable by determining that the difference between the input voltage of the drain pump 102 and the rated voltage is within the preset range, so as to improve the accuracy of pressure detection and avoid misjudgment caused by the instability of the input voltage of the drain pump 102.

S302, determining the fault state of the drainage pump and the fault state of the filter element according to the pressure value and a preset target threshold value set.

Wherein the target threshold set comprises a plurality of target thresholds, for example, the target threshold set comprises four target thresholds, namely zero, a first target threshold, a second target threshold and a third target threshold. The number of target thresholds in the target threshold set is not limited in the embodiments of the present application.

It should be noted here that the fault state of the drain pump can be divided into three stages, for example: a no fault condition, a primary fault condition, and a critical fault condition; the sump pump fault condition may also be divided into two stages, such as a primary fault condition and a catastrophic fault condition. The fault condition of the filter element can be classified into three stages, for example, a primary plugging condition, a secondary plugging condition, and a tertiary plugging condition. The number of levels of fault conditions is not limited by the present application.

For example, a fault condition of the drain pump and a fault condition of the filter element are determined based on a relationship of the pressure value to a target threshold value of a set of target threshold values. For example, according to the mapping relation between the pressure value and a target threshold value in the target threshold value set, the fault state of the drainage pump and the fault state of the filter element are determined.

And S303, controlling the prompter to send a prompt signal according to the fault state of the drainage pump and the fault state of the filter element.

The clothes treatment equipment of the embodiment of the application further comprises a prompter, and the prompter is controlled to send out a prompt signal according to the fault state of the drainage pump and the fault state of the filter element so as to remind a user of carrying out corresponding treatment.

The indicator may be a display, for example, a display screen of the laundry processing apparatus, and the fault state of the drain pump and the fault state of the filter element are represented by displaying patterns, characters, light, or the like on the display screen.

The prompter can also be the lamp area, for example, sets up the lamp area at clothes treatment facility's control panel, lights the lamp pearl of different quantity through control lamp area, the fault condition of sign drain pump and the fault condition of filter core.

The prompter can also be a loudspeaker or a voice module, and the alarm can control the loudspeaker or the voice module to send out different sound signals to represent the fault state of the drainage pump and the fault state of the filter element.

Of course, the prompter may also include a light prompter and a sound prompter at the same time, and the prompt signal at this time includes a light signal and a sound signal at the same time.

It can be understood that, in general, the possibility of the malfunction of the drain pump is small for a preset usage time of the newly purchased laundry treating apparatus, for example, five years, and the malfunction state of the filter cartridge is determined mainly according to the pressure value and the target threshold value set.

The method for detecting the fault state of the clothes treatment equipment comprises a drainage filtering device, wherein the drainage filtering device comprises a shell, a drainage pump and a filter element, the shell is provided with a filter cavity, a drainage cavity and a transition cavity communicated with the filter cavity and the drainage cavity, the filter element is installed in the filter cavity, and at least part of the drainage pump is installed in the drainage cavity; the laundry treating apparatus further includes a prompter. According to the method for detecting the fault state of the clothes treatment equipment, the fault state of the drainage pump and the fault state of the filter element are determined through the pressure value of the transition cavity and the preset target threshold value set, and the prompting device is controlled to send out the prompting signal according to the fault state of the drainage pump and the fault state of the filter element, so that a user can timely perform treatment. The drainage pump fault state monitoring device can monitor the fault state of the drainage pump and the fault state of the filter element at the same time, is simple in structure, and does not need to be provided with a detection device respectively; the detection time is short, the accuracy is high, the fault state of the drainage pump and the fault state of the filter element in the current drainage process of the user can be timely prompted, the user can be facilitated to timely perform treatment, and then the working efficiency of the clothes treatment equipment is improved.

Based on the embodiment shown in fig. 3, the following describes the method for detecting the malfunction of the laundry machine in detail with reference to fig. 4.

Fig. 4 is a schematic view illustrating a fault detection method of another clothes treatment apparatus according to an embodiment of the present application. Referring to fig. 4, the method includes:

s401, obtaining the pressure value of the transition cavity

It should be noted that the execution process of step S401 may refer to the execution process of step S301, and is not described herein again.

S402, judging whether the pressure value is smaller than a first target threshold value.

Wherein the first target threshold belongs to a set of target thresholds, the first target threshold being a negative pressure, i.e. the first target threshold is smaller than zero. The first target threshold is greater than or equal to a standard negative pressure value, wherein the standard negative pressure value is a pressure value of the transition cavity when the drainage pump 102 works normally and the filter element 103 is not in a blocked state. For example, the first target threshold is-5 and the standard negative pressure value is-10. The specific numerical value of the first target threshold is not limited in the embodiment of the present application.

When the pressure value of the transition cavity is larger than the first target threshold value, namely step S402 is no, step S403 is executed, namely the fault state of the drainage pump is determined according to the pressure value and the target threshold value set, and at the moment, the filter element has no fault.

When the pressure value of the transition cavity is smaller than the first target threshold value, namely step S402 is 'yes', step S404 is executed, namely the fault state of the filter element is determined according to the pressure value and the target threshold value set, and the drainage pump does not have faults.

And S403, judging whether the pressure value is less than zero.

It should be noted that zero is also a target threshold, which belongs to the target threshold set. When the pressure value of the transition cavity is greater than or equal to zero, namely step S403 is 'no', step S405 is executed; when the pressure value of the transition chamber is less than zero, i.e., "yes" in step S403, step S407 is performed.

This step can be understood as the classification of the malfunctioning state of the drain pump according to a target threshold "zero".

S404, judging whether the pressure value is smaller than a second target threshold value.

Wherein the second target threshold belongs to a set of target thresholds, the second target threshold is a negative pressure, the second target threshold is smaller than the first target threshold, for example, the second target threshold is-15.

When the pressure value of the transition cavity is greater than or equal to the second target threshold value, namely step S404 is no, step S409 is executed; when the pressure value of the transition chamber is smaller than the second target threshold value, i.e., "yes" in step S404, step S411 is performed.

This step can be understood as the ranking of the fault status of the filter element according to a second target threshold.

S405, determining that the fault state of the drainage pump is a secondary fault state.

This step can be understood as determining that the fault state of the drain pump is a secondary fault state when the pressure value of the transition chamber is greater than zero, which indicates that the power of the drain pump is seriously degraded and needs to be maintained.

And S406, controlling the second indicator lamp to emit light with a second color.

And when the fault state of the drainage pump is determined to be a secondary fault state, controlling the prompter to send out a prompt signal according to the secondary fault state of the drainage pump, such as sending out a light signal, a sound signal and the like. In some implementations, with reference to fig. 5, fig. 5 is a schematic structural diagram of a prompter provided in an embodiment of the present application. The annunciator includes a first light set including a first indicator light 501 and a second indicator light 502. According to the second grade fault state control prompting device of drain pump sends the cue signal, specifically include: the second indicator light 502 is controlled to emit a second color light, such as red. Illustratively, the second indicator light 502 is a red LED light, and the control power supply powers the second indicator light 502 to turn on the second indicator light 502, thereby emitting a red light. The color of the second color light is not limited in the embodiment of the application.

Alternatively, the second light set includes a first signal light that is controlled to emit a second color light upon determining that the drain pump fault condition is a secondary fault condition.

S407, determining that the fault state of the drainage pump is a primary fault state.

The step can be understood as that, when the pressure value of the transition cavity is greater than or equal to the first target threshold value and the pressure value of the transition cavity is less than zero, the fault state of the drain pump is determined to be a primary fault state, which indicates that the power of the drain pump is reduced at the moment, the drain pump is in fault, the drain speed is reduced, and a user can maintain the drain pump or not maintain the drain pump temporarily.

And S408, controlling the first indicator lamp to emit first color light.

And when the fault state of the drainage pump is determined to be a primary fault state, controlling the prompter to send out a prompt signal according to the primary fault state of the drainage pump, such as sending out a light signal, a sound signal and the like. In some implementations, with reference to fig. 5, the controlling the indicator to send the indication signal according to the primary fault state of the drain pump specifically includes: the first indicator light 501 is controlled to emit a first color light, such as yellow. Illustratively, the first indicator light 502 is a yellow LED light, and the control power supply supplies power to the first indicator light 501 to turn on the first indicator light 501, so as to emit yellow light. The embodiment of the application does not limit the color of the first color light. The first color light and the second color light are different in color.

Alternatively, the second light set includes a first signal light that is controlled to emit a first color light upon determining that the drain pump is in the secondary fault condition. At this time, the first color light and the second color light have different colors.

It can be understood that when the fault state of the drain pump is a primary fault state and a secondary fault state, the filter element is not in fault; when the fault state of the filter element is a primary blockage state, a secondary blockage state and a tertiary blockage state, the drainage pump has no fault.

And S409, determining that the fault state of the filter element is a primary blocking state.

The step can be understood as determining that the fault state of the filter element is a first-stage blockage state when the pressure value of the transition cavity is greater than or equal to the second target threshold value and the pressure value of the transition cavity is less than the first target threshold value, which indicates that the filter element is slightly blocked, can be ignored and is not processed temporarily.

And S410, controlling the third indicator lamp to emit light of a third color.

And when the fault state of the filter element is determined to be a primary blocking state, controlling the prompter to send out a prompt signal according to the primary blocking state of the filter element, such as sending out a light signal, a sound signal and the like. In some implementations, in conjunction with fig. 5, the prompter further includes a second light group including a third indicator light 503, a fourth indicator light 504, and a fifth indicator light 505. In the embodiment of the present application, the third indicator light 503, the fourth indicator light 504, and the fifth indicator light 505 are all rectangular lights, and the first indicator light 501 and the second indicator light 502 are all circular lights.

According to the one-level jam state control prompting device of filter core and send cue signal, specifically include: the third indicator light 503 is controlled to emit a third color light, for example, green. Illustratively, the third indicator light 503 is a green LED light, and the control power supply supplies power to the third indicator light 503 to turn on the third indicator light 503, so as to emit a green light. The embodiment of the application does not limit the color of the third color light. The third color light may be different from both the first color light and the second color light.

Alternatively, the second lamp set includes a second signal lamp that is controlled to emit a third color light upon determining that the fault condition of the filter element is a primary plugging condition.

S411, judging whether the pressure value is smaller than a third target threshold value.

Wherein the third target threshold belongs to the set of target thresholds, the third target threshold is a negative pressure, the third target threshold is smaller than the second target threshold, for example, the third target threshold is-20.

When the pressure value of the transition cavity is greater than or equal to the third target threshold value, namely step S411 is 'no', step S412 is executed; when the pressure value of the transition chamber is smaller than the third target threshold value, i.e., "yes" in step S411, step S414 is performed.

This step may be understood as further ranking the fault status of the filter element according to a third target threshold.

And S412, determining that the fault state of the filter element is a secondary blockage state.

The step can be understood as determining that the fault state of the filter element is a secondary blockage state when the pressure value of the transition cavity is greater than or equal to the third target threshold value and the pressure value of the transition cavity is less than the second target threshold value, which indicates that the filter element is blocked but not serious at the moment, and the filter element can be cleaned, and the temporary non-treatment can be ignored.

And S413, controlling the fourth indicator lamp to emit fourth color light.

And when the fault state of the filter element is determined to be a secondary blockage state, controlling the prompter to send out a prompt signal according to the secondary blockage state of the filter element, such as sending out a light signal, a sound signal and the like. In some implementations, with reference to fig. 5, the controlling the indicator to send the indication signal according to the secondary clogging state of the filter element specifically includes: the fourth indicator light 504 is controlled to emit a fourth color light, such as yellow. Illustratively, the fourth indicator light 504 is a yellow LED light, and the control power supply supplies power to the fourth indicator light 504 to turn on the fourth indicator light 504, so as to emit yellow light.

Since the fourth indicator light 504 and the first indicator light 501 have different shapes, even if the fourth indicator light 504 and the first indicator light 501 both emit yellow light, distinction can be made. Of course, the fourth color light may be a different color than the other colors of light.

Alternatively, the second lamp set includes a second signal lamp that is controlled to emit a fourth color light upon determining that the fault condition of the filter cartridge is a secondary plugging condition. At this time, the fourth color light and the third color light are different in color.

And S414, determining that the fault state of the filter element is a three-stage blockage state.

The step can be understood as that when the pressure value of the transition cavity is smaller than the third target threshold value, the fault state of the filter element is determined to be a three-stage blockage state, which indicates that the filter element is seriously blocked and must be cleaned, otherwise, the filter element is completely blocked.

And S415, controlling the fifth indicator lamp to emit fifth color light.

And when the fault state of the filter element is determined to be the third-stage blockage state, controlling the prompter to send out a prompt signal according to the third-stage blockage state of the filter element, such as sending out a light signal, a sound signal and the like. In some implementations, with reference to fig. 5, the controlling the prompting device to send a prompting signal according to the three-stage blockage state of the filter element specifically includes: the fifth indicator light 505 is controlled to emit a fifth color light, for example, red. Illustratively, the fifth indicator light 505 is a red LED light, and the control power supply supplies power to the fifth indicator light 505 to turn on the fifth indicator light 505, so as to emit a red light.

Since the fifth indicator light 505 and the second indicator light 502 have different shapes, even if the fifth indicator light 505 and the second indicator light 502 both emit red light, a distinction can be made. Of course, the fifth color light may be a different color than the other colors of light.

Alternatively, the second lamp set includes a second signal lamp that is controlled to emit a fifth color light when the fault condition of the filter element is determined to be the three-stage clogging condition. At this time, the colors of the fifth color light, the third color light and the fourth color light are different.

According to the fault detection method of the clothes treatment equipment, the fault state of the drainage pump and the fault state of the filter element are classified by comparing the pressure value with the first target threshold, zero, the second target threshold and the third target threshold, different indicating lamps are controlled to emit light with colors according to different grades of the fault state of the drainage pump and the fault state of the filter element, so that a user can visually determine the fault state of the drainage pump and the fault state of the filter element according to the positions of the indicating lamps and/or the colors of the light, the states of the drainage pump and the filter element are accurately and reliably prompted, and the accuracy of fault detection is improved.

Fig. 6 is a schematic structural diagram of a fault detection device of a clothes treatment apparatus according to an embodiment of the present application. The malfunction detecting device 600 of the laundry treating apparatus may be provided in the laundry treating apparatus; referring to fig. 1 and 2, the laundry treating apparatus includes a drain filter device including a case 101, a drain pump 102, and a filter cartridge 103, the case 101 being provided with a filter chamber 104, a drain chamber 105, and a transition chamber 106 communicating the filter chamber 104 and the drain chamber 105, the filter cartridge 103 being installed in the filter chamber 104, and at least a portion of the drain pump 102 being installed in the drain chamber 105. The laundry treating apparatus further includes a prompter.

Referring to fig. 6, the failure detection device 600 of the laundry treating apparatus may include an acquisition module 601, a determination module 602, and a control module 603, wherein:

the obtaining module 601 is configured to obtain a pressure value of the transition cavity;

the determining module 602 is configured to determine a fault state of the drain pump and a fault state of the filter element according to the pressure value and a preset target threshold value set; the target threshold set comprises a plurality of target thresholds;

the control module 603 is configured to control the indicator to send an indication signal according to the fault state of the drain pump and the fault state of the filter element.

In some possible implementations, the determining module 602 is specifically configured to,

determining a fault condition of the drain pump according to the pressure value and the target threshold set when the pressure value is greater than or equal to a first target threshold; the first target threshold belongs to the set of target thresholds and the first target threshold is less than zero;

when the pressure value is greater than or equal to the first target threshold value and is less than or equal to zero, determining that the fault state of the drainage pump is a primary fault state;

and when the pressure value is larger than zero, determining that the fault state of the drainage pump is a secondary fault state.

the control module 603 is specifically configured to control the first indicator light to emit a first color light when it is determined that the fault state of the drain pump is the primary fault state; and when the fault state of the drainage pump is determined to be a secondary fault state, controlling the second indicator lamp to emit light of a second color.

In some possible implementations, the determining module 602 is specifically configured to determine that the fault state of the filter element is a primary clogging state when the pressure value is greater than or equal to a second target threshold and smaller than the first target threshold;

In some possible implementations, the prompter further includes a second light group, the second light group including a third indicator light, a fourth indicator light, and a fifth indicator light; the control module 603 is specifically configured to control the third indicator light to emit light of a third color when the filter element is blocked at a first stage; when the filter element is blocked in the second stage, the fourth indicator lamp is controlled to emit light of a fourth color; and when the filter element is blocked in three stages, controlling the fifth indicator light to emit light of a fifth color.

In some possible implementations, the obtaining module 601 is specifically configured to obtain the pressure value of the transition cavity after the drain pump is started for a preset time; or when the difference value between the current power of the drainage pump and the rated power of the drainage pump is determined to be within a preset range, acquiring the pressure value of the transition cavity.

The fault detection device of the clothes processing equipment provided by the embodiment of the application can execute the technical scheme shown in the method embodiment, the principle and the beneficial effect are similar, and the details are not repeated here.

Fig. 7 is a schematic diagram of a hardware structure of a clothes treatment apparatus according to an embodiment of the present application. Referring to fig. 7, the laundry treating apparatus 700 may include: a processor 701 and a memory 702, wherein the processor 701 and the memory 702 may communicate; illustratively, the processor 701 and the memory 702 are in communication via a communication bus 703, the memory 702 is used for storing a computer program, and the processor 701 is used for calling the computer program in the memory 702 to execute the fault detection method of the clothes treatment apparatus shown in any of the above-mentioned method embodiments.

Optionally, the laundry treating apparatus 700 may further include a communication interface, which may include a transmitter and/or a receiver.

Optionally, the Processor may be a Central Processing Unit (CPU), or may be another general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

The embodiment of the application provides a computer readable storage medium, wherein computer execution instructions are stored on the readable storage medium; the computer executed instructions are used for realizing the fault detection method of the clothes treatment equipment according to any embodiment.

The present application provides a computer program product comprising a computer program which, when executed by a processor, implements the method of fault detection for a laundry treatment apparatus as described in any of the above embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for detecting a malfunction of a laundry treatment apparatus, the laundry treatment apparatus comprising a drain filter device including a housing, a drain pump, and a filter element, the housing having a filter chamber, a drain chamber, and a transition chamber communicating the filter chamber and the drain chamber, the filter element being installed in the filter chamber, and at least a portion of the drain pump being installed in the drain chamber; the laundry treating apparatus further includes a prompter;

the method comprises the following steps:

acquiring a pressure value of the transition cavity;

2. The method of claim 1, wherein determining the fault condition of the drain pump and the fault condition of the filter element based on the pressure values and a preset target threshold set comprises:

3. The method of claim 2, wherein determining the fault condition of the drain pump from the pressure value and the target threshold set when the pressure value is greater than or equal to a first target threshold comprises:

4. The method of claim 3, wherein the annunciator comprises a first light set comprising a first indicator light and a second indicator light;

5. The method of claim 2, wherein determining the fault condition of the filter element from the pressure value and the target threshold set when the pressure value is less than the first target threshold comprises:

6. The method of claim 5, wherein the annunciator further comprises a second set of lights comprising a third indicator light, a fourth indicator light, and a fifth indicator light;

7. The method of any of claims 1-6, wherein said obtaining a pressure value for the transition chamber comprises:

alternatively, the first and second electrodes may be,

8. The fault judgment device of the clothes treatment equipment is characterized by comprising a drainage filtering device, wherein the drainage filtering device comprises a shell, a drainage pump and a filter element, the shell is provided with a filtering cavity, a drainage cavity and a transition cavity communicated with the filtering cavity and the drainage cavity, the filter element is installed in the filtering cavity, and at least part of the drainage pump is installed in the drainage cavity; the laundry treating apparatus further includes a prompter; the device comprises: the device comprises an acquisition module, a determination module and a control module;

9. A laundry treating apparatus, comprising: a processor and a memory;

the memory is used for storing a computer program;

the processor is configured to execute the computer program stored in the memory to implement the fault detection method of the laundry treatment apparatus according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored therein computer-executable instructions for implementing the fault detection method of a laundry treatment apparatus of any one of claims 1 to 7 when executed by a processor.

11. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements a method of fault detection of a laundry treatment apparatus as claimed in any one of claims 1 to 7.