CN117685630A - Drainage blockage detection method and device and air conditioner - Google Patents

Abstract

The invention discloses a drain blockage detection method, a drain blockage detection device and an air conditioner, wherein the method comprises the steps of obtaining a first real-time temperature value at a first threshold water level of a water receiving disc; meanwhile, an indoor environment temperature value is also obtained; and determining whether the water receiving disc is blocked by water drainage according to the temperature difference value between the first real-time temperature value and the indoor environment temperature value at the same time. According to the invention, according to the first real-time temperature value and the indoor environment temperature value detected at the same moment, and the temperature difference value of the first real-time temperature value and the indoor environment temperature value is calculated, whether the water receiving tray is blocked is judged, data support is provided for starting the anti-blocking cleaning device or removing the blocking reason by a user, and the problem that after-sales water overflow phenomenon is caused because the water receiving tray is not effectively treated when water is full is avoided.

Description

Drainage blockage detection method and device and air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to a drain blockage detection method and device and an air conditioner.

Background

Installing air conditioners in high-dust bacteria, high-humidity and hot environment areas, and the like, wherein the air conditioners have the problem of poor environmental adaptability, so that the problems of unsmooth water leakage, water overflow and the like caused by blockage and drainage are caused, the use of the air conditioners has the problem, the customer experience is poor, and complaints are increased; in the after-sale water leakage problem, the water leakage proportion is more than 80% due to the dirty blockage of the water outlet of the bottom shell and the water drain pipe. The reason for the occurrence of the above problems is that: the air conditioner is high or low due to installation reasons, dust in air is collected by the air conditioner, and as condensate water enters the water receiving disc, substances such as dust, fibers and the like are deposited to a certain degree to block the water outlet hole of the water receiving disc and the bending part of the drain pipe, so that the condensate water is accumulated in the water receiving disc, more and more condensate water is accumulated, and water leakage complaints from the lower side gradually occur.

In view of this, it is necessary to provide a drainage blockage detection method for the problem of water leakage complaints of a water receiving tray of an air conditioner, so as to detect whether the water leakage blockage occurs in the air conditioner and cause overflow, so as to start an anti-blockage cleaning device or provide data support for a user to remove the blockage reason, avoid the situation that the water overflow occurs in the air conditioner without providing a corresponding cleaning prompt for the user, or not know when to start the anti-blockage cleaning device and cause more serious overflow.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present invention is directed to a drain blockage detection method, a device and an air conditioner. The problem of in the use of air conditioner, substances such as dust, fibre get into the water collector along with the comdenstion water in, deposit to the part of bending of certain degree jam water collector apopore, drain pipe, the water collector jam not obtained effective treatment and lead to appearing the overflow phenomenon, arouse the after-market complaint is solved.

The technical scheme adopted for solving the technical problems is as follows: a drain blockage detection method, a device and an air conditioner are provided, wherein the method comprises the steps of obtaining a first real-time temperature value at a first threshold water level of a water receiving disc; meanwhile, an indoor environment temperature value is also obtained; and determining whether the water receiving disc is blocked by water drainage according to the temperature difference value between the first real-time temperature value and the indoor environment temperature value at the same time.

As a further improvement of the invention: according to the temperature difference value between the first real-time temperature value and the indoor environment temperature value at the same time, determining whether the water receiving disc is blocked by water drainage specifically comprises:

judging whether the temperature difference value between the first real-time temperature value and the indoor environment temperature value is larger than or equal to a preset temperature value;

if yes, determining that the drain of the water receiving disc is blocked;

if not, determining that the water receiving disc is not blocked by water drainage.

As a further improvement of the invention: and acquiring the first real-time temperature value and the indoor environment temperature value every interval detection period.

As a further improvement of the invention: after determining whether the water pan is blocked, the method comprises the following steps:

if the drain blockage of the water receiving disc is determined, controlling a compressor of the air conditioner to stop, and operating an anti-blockage cleaning device in the water receiving disc until the temperature difference value between the first real-time temperature value and the indoor environment temperature value is smaller than a preset temperature value and the preset time is maintained;

and if the water receiving disc is not blocked by water drainage, controlling the air conditioner to normally operate.

As a further improvement of the invention: after controlling the compressor to stop and operate the anti-blocking cleaning device, the method further comprises the following steps:

acquiring the shutdown times of the compressor in a set period;

judging whether the shutdown times of the compressor are more than or equal to set times;

if yes, displaying a water full protection fault code, and controlling the air conditioner to stop integrally;

if not, controlling the whole air conditioner to restart.

As a further improvement of the invention: and a first temperature sensor is arranged on the first threshold water level of the water receiving disc and is used for detecting a first real-time temperature.

As a further improvement of the invention: and a first temperature sensor is arranged at the same height position of the first threshold water level of the water receiving disc.

As a further improvement of the invention: the indoor environment temperature is the temperature of an air inlet of the air conditioner.

Based on the same inventive concept, the present invention also provides a drain blockage detection apparatus, comprising:

the first acquisition module is used for acquiring a first real-time temperature value at a first threshold water level of the water pan;

the second acquisition module is used for acquiring an indoor environment temperature value of the first real-time temperature corresponding to the acquisition time;

the determining module is used for determining whether the drain of the water receiving disc is blocked or not according to whether the temperature difference value between the first real-time temperature value and the indoor environment temperature value at the same moment is larger than or equal to a preset temperature value, and if so, determining that the drain of the water receiving disc is blocked; if not, determining that the water receiving disc is not blocked by water drainage.

Based on the same inventive concept, the invention also provides a drain blockage detection method

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, by detecting the first real-time temperature value at the height of the first threshold water level of the water receiving disc, the temperature difference value between the first real-time temperature value and the indoor environment temperature value is calculated, so that whether the water receiving disc is blocked by water drainage is determined, the situation that whether the water receiving disc is full of water and is not drained is reflected, the phenomenon that the condensed water level in the water receiving disc exceeds the first threshold water level and is not drained in time is avoided, and the air conditioner continues to operate to generate water overflow phenomenon, so that after-sales complaints are caused.

Drawings

Fig. 1 is a control logic diagram of a drain plug detection method according to the present invention.

Fig. 2 is a flow chart of a drain blockage detection method according to the present invention.

Fig. 3 is a schematic view of the structure of the first temperature sensor according to the present invention.

Reference numerals: 1. the control mainboard, 2, first temperature sensor, 3, water collector.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. 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 application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In order to solve the technical problems that in the using process of an air conditioner in the prior art, as dust, fiber and other substances enter a water receiving disc along with condensed water, the water receiving disc is easy to block at a bending position of a water outlet hole and a water discharge pipe to a certain extent, and overflow phenomenon occurs due to the fact that the water receiving disc is not effectively treated after being blocked, after-sales complaints are caused, and meanwhile, the using experience of a user is influenced, the invention is further described by combining the description of the drawings and the embodiment:

as shown in fig. 1 to 3, the present invention discloses a drain blockage detection method for detecting whether a drain pan 3 of an air conditioner is blocked or not, and respectively making corresponding measures according to the drain blockage situation and the drain unblocked situation to prevent the overflow situation of the drain pan 3 under the drain blockage situation, wherein the detection method specifically comprises:

s1: acquiring a first real-time temperature value at the first threshold water level on the water pan 3;

in a specific example, a first temperature sensor 2 is provided, the installation height of the first temperature sensor 2 is consistent with the first threshold water level of the water pan 3, and the first real-time temperature value is detected by the first temperature sensor 2.

It should be noted that, the water pan 3 is provided with a first threshold level in advance, and the first threshold level is located at the top end close to the edge of the water pan 3, but does not exceed the top edge of the water pan 3, and is used for representing the maximum water level height of the water pan 3. When the drainage system is smooth, condensed water generated by normal refrigeration operation of the air conditioner can be smoothly drained through the water channel of the water receiving disc 3, accumulated water cannot be generated in the water receiving disc 3, the water level is low, and the condensed water cannot be in contact with the first temperature sensor 2. When the condensate in the drip tray 3 exceeds the first threshold level, this means that the drip tray 3 continues to flow in condensate without the risk of water overflow occurring when the water level drops.

Therefore, the first threshold water level is the upper limit safety water level of the water receiving tray 3, in order to avoid the water leakage phenomenon of the water receiving tray 3, the condensed water level in the water receiving tray 3 needs to be kept below the first threshold water level, and similarly, when the condensed water level reaches or exceeds the first threshold water level, the water needs to be drained as soon as possible.

When the condensed water in the water receiving disc 3 does not reach the first threshold water level, at this time, the first temperature sensor 2 is not contacted with the condensed water, and the first real-time temperature value detected by the first temperature sensor 2 reflects the air temperature above the water receiving disc 3, and at this time, the situation that the condensed water in the water receiving disc 3 is normally drained and no blockage occurs can be reflected; when the condensed water in the water receiving disc 3 reaches the first threshold water level, the first temperature sensor 2 is in direct contact with the condensed water at the moment, and then the first real-time temperature value detected by the first temperature sensor 2 reflects the temperature of the condensed water above the water receiving disc 3, and at the moment, the situation that the condensed water in the water receiving disc 3 is not timely discharged and blocked can be reflected, the condensed water continuously flows into the water receiving disc 3, and the water level does not fall below the first threshold water level, so that the overflow problem can occur.

In some embodiments, the first temperature sensor 2 is mounted on the drip tray 3, i.e. the first temperature sensor 2 is mounted at a first threshold level of the drip tray 3. The first temperature sensor 2 is directly fixedly connected with the water receiving disc 3, the structure or the device for fixing the first temperature sensor 2 is not additionally arranged, and the material cost is saved.

In an alternative embodiment, the first temperature sensor 2 is not necessarily installed on the water pan 3, that is, the first temperature sensor 2 is not in a mechanical connection with the water pan 3, that is, the first temperature sensor 2 may be installed in the water pan 3 in a suspended manner, but the installation height of the first temperature sensor 2 is consistent with the first threshold water level of the first water pan 3, where the first temperature sensor 2 needs to be additionally provided with a fixing structure or a device for being installed in a suspended manner at the first threshold water level of the water pan 3.

S2: acquiring an indoor environment temperature value in real time; the indoor environment temperature value is used for representing the indoor space temperature where the air conditioner is located, the indoor environment temperature value is changed in real time, meanwhile, the indoor environment temperature value and the first real-time temperature value are detected at the same time, and then the indoor environment temperature value and the first real-time temperature value are in one-to-one correspondence.

In some embodiments, the indoor environment temperature value is an environment temperature detected at an air inlet of the air conditioner, and an environment temperature sensing bulb is usually arranged at the air inlet of the air conditioner, so that an extra second temperature sensor is not required to be additionally arranged in an indoor space.

In an alternative embodiment, the indoor environment temperature value is not necessarily detected from an environment temperature sensing bulb at an air inlet of the air conditioner, the second temperature sensor may be independently arranged in an indoor space where the air conditioner is located, and the second temperature sensor may be linked with other household appliances, such as an air purifier, a humidifier, etc., to obtain the indoor environment temperature value of the indoor space where the air conditioner is located from the other household appliances, where the other household appliances and the air conditioner are located in the same indoor space. In this regard, the detection method and structure of the indoor environmental temperature value are not particularly limited.

S3: and determining whether the water receiving disc 3 is blocked by water drainage according to the temperature difference value between the first real-time temperature value and the indoor environment temperature value at the same time. Here, whether the drain plug of the water receiving tray 3 is determined according to the temperature difference is defined by the user, which may be understood as whether the water receiving tray 3 is full according to the temperature difference.

Because the temperature difference between the indoor environment temperature value and the air temperature above the water pan 3 is in the set temperature range fluctuation under normal conditions or is regarded as a fixed value in the operation process of the air conditioner, when the condensed water level in the water pan 3 does not reach the first threshold water level, the first real-time temperature value detected by the temperature sensor is A, and the temperature difference between the first real-time temperature value and the indoor environment temperature value is in the set temperature range.

Then, when the water level of the condensed water is greater than or equal to the first threshold level of the water-receiving disc 3, the first temperature sensor 2 contacts with the condensed water, the first real-time temperature value detected by the first temperature sensor 2 is B, at this time, the detected temperature B is the water temperature above the water-receiving disc 3, because the specific heat capacity of water is different from the specific heat capacity of air and has a larger difference, the specific heat capacity of water is typically 4.2 kJ/(kg×k), the specific heat capacity of air is about 1.4 kJ/(kg×k), that is, the heat absorbed or released by the water at every time when the water is raised or lowered at normal temperature is about three times that of the air, so that there is a clear difference between the air temperature a and the water temperature B, which results in that the first real-time temperature value detected when the water-receiving disc 3 is full of water is displayed is different from the temperature difference between the first real-time temperature value detected when the water-receiving disc 3 is not full of water and the indoor environment temperature value, and whether the water-receiving disc 3 is blocked is determined by using the principle.

In some embodiments, whether the drain pan 3 is blocked is determined according to whether the temperature difference between the first real-time temperature value and the indoor environment temperature value is greater than or equal to a preset temperature value. Specifically, when the detected temperature difference between the first real-time temperature value and the indoor environment temperature value is greater than or equal to the preset temperature value, it also indicates that the water receiving tray 3 is full of water, and the first real-time temperature value detected by the first temperature sensor 2 is the condensed water temperature at the first threshold water level of the water receiving tray 3, that is, the first temperature sensor 2 has contacted the condensed water, the condensed water level in the water receiving tray 3 reaches or exceeds the first threshold water level of the water receiving tray 3, thereby determining that the water receiving tray 3 is blocked.

When the detected temperature difference between the first real-time temperature value and the indoor environment temperature value is smaller than the preset temperature value, it is also indicated that the water receiving disc 3 is not full of water, the first real-time temperature value detected by the first temperature sensor 2 is the air temperature at the first threshold water level of the water receiving disc 3, and the condensed water temperature is not detected, namely the first temperature sensor 2 is not contacted with condensed water, the condensed water level is lower than the first threshold water level, and the condensed water temperature near the first threshold water level is lower than the air temperature at the first threshold water level at the same time/moment, so that it is determined that the water receiving disc 3 is not blocked by water drainage.

In some embodiments, a detection period Δt″ is set in the indoor unit control main board 1 of the air conditioner in advance, the first real-time temperature value and the indoor environment temperature value are obtained every time the detection period Δt″ is set, a plurality of times of temperatures are collected for a plurality of detection periods Δt″ in succession, for example, the first real-time temperature and the indoor environment temperature corresponding to the time t1, t1+ [ delta ] t ", t1+2 [ delta ] t", t1+3 [ delta ] t "… … t1+n [ delta ] t" are obtained, then a temperature difference value between the first real-time temperature value at the first preset time and the indoor environment temperature value is calculated, the indoor environment temperature value is dynamically updated, and when the water-blocking prevention detection logic is executed, the indoor environment temperature at the same time is obtained at the same time when the control main board 1 of the air conditioner obtains the first real-time temperature.

The water-proof blocking detection is started after the air conditioner is operated in the refrigeration mode, the setting time for starting the detection logic is set according to the sizes of different models, the setting time is set for ensuring that the water pan 3 is operated without overflowing when full water is filled, and the setting time is generally 1-5 minutes.

In some embodiments, after determining whether the water receiving tray 3 is blocked by water discharge, performing a corresponding operation on the water receiving tray 3 according to the determination result to prevent the water receiving tray 3 from overflowing fully. Specifically, after the drain blockage of the water receiving disc 3 is determined, controlling a compressor of the air conditioner to stop so as to prevent overflow, and operating the blockage-preventing cleaning device in the water receiving disc 3 until the temperature difference between the first real-time temperature value and the indoor environment temperature value is smaller than a preset temperature value and the preset time is maintained; when it is determined that the drain pan 3 is not blocked, the air conditioner is controlled to operate normally without taking excessive measures.

The anti-blocking cleaning device is used for cleaning substances such as dust and fibers deposited at the water outlet hole of the water receiving disc 3 and the bending position of the drain pipe in the prior art.

In some embodiments, further, after detecting that the water receiving disc 3 is determined to be blocked, controlling the compressor to stop, controlling the water receiving disc 3 of the air conditioner to enlarge the water discharge, continuously detecting whether the water level of the condensed water falls below the first threshold level by using a water level monitor or a first temperature sensor 2 in the water receiving disc 3, and if the water level of the condensed water in the water receiving disc 3 does not fall below the first threshold level, operating the anti-blocking cleaning device to drain the water receiving disc 3.

In a specific example, in the air conditioner refrigeration operation mode, a first real-time temperature value T1 is obtained at a first preset time T1, an indoor environment temperature value at the first preset time T1 is obtained at the same time, a first real-time temperature value T2 is obtained at a second preset time T2, an indoor environment temperature value at the second preset time T2 is obtained at the same time, and a time difference between the first preset time T1 and the second preset time T2 is a detection period Δt).

Calculating to obtain DeltaT1= -T2|, deltaT2= -T1|, wherein T represents the indoor environment temperature value, tn represents the first real-time temperature value corresponding to the time Tn, and by way of example, T3 represents the first real-time temperature value at the time T3, T dynamically changes, T in each temperature difference is the same as the time Tn is acquired, and then specific judgment logic for detecting the drain blockage is operated:

when Δt1 is smaller than a and Δt2 is smaller than a, the a is a preset temperature value, which indicates that the temperature difference between the first real-time temperature at the first threshold water level of the water receiving tray 3 and the indoor environment temperature is smaller at the moment, that is, the condensed water does not contact the first temperature sensor 2, the condensed water level in the water receiving tray 3 does not reach the first threshold water level, and at the moment, the control main board 1 does not act, and the whole air conditioner operates normally.

When DeltaT 1 is more than or equal to a or DeltaT 2 is more than or equal to a, the temperature difference between the first real-time temperature at the first threshold water level of the water receiving disc 3 and the indoor environment temperature is larger, namely that condensed water is contacted with the first temperature sensor 2, the water receiving disc 3 is full (the water level of the condensed water reaches or exceeds the first threshold water level), and water leakage can occur after the water receiving disc is operated for a period of time. At this time, the control main board 1 will send out a compressor stop signal to stop the compressor, and the fan of the air conditioner operates normally. And meanwhile, the main board 1 is controlled to output signals, and the anti-blocking cleaning device is controlled to operate.

When DeltaT 1 is more than or equal to a and DeltaT 2 is less than a, the condition shows that the drain hole and the drain pipe of the water receiving disc 3 are dredged, the condensed water is successfully discharged, and the anti-blockage cleaning device continuously operates at the moment, so that the dredging effect is ensured. The anti-blocking cleaning device is operated and simultaneously detects whether the drain pan 3 is blocked or not, if DeltaT 1 is smaller than a and DeltaT 2 is smaller than a, the control main board 1 controls the anti-blocking cleaning device to keep not to act, and the whole air conditioner operates in a normal refrigeration mode.

When DeltaT 1 is less than a and DeltaT 2 is more than or equal to a, the condition is shown that the drain hole and the drain pipe of the water receiving disc 3 are blocked, and the condensed water just floods the first temperature sensor 2 at the first threshold water level on the water receiving disc 3. At this time, the anti-blocking cleaning device starts to operate and is continuously dredged. The anti-blocking cleaning device is always detected while running, and if DeltaT 1 is smaller than a and DeltaT 2 is smaller than a, the control main board 1 controls the anti-blocking cleaning device to keep not to act, and the whole air conditioner runs normally in a refrigerating mode.

In some embodiments, after performing the compressor shutdown, operating the anti-clogging cleaning device further comprises:

s4: recording the shutdown times of the compressor in a set period;

judging whether the shutdown times of the compressor are more than or equal to set times;

if yes, displaying a water full protection fault code, and controlling the air conditioner to stop integrally; here, the user is shown a water full protection fault code, and the anti-blockage cleaning device cannot clean the drain hole and drain pipe blockage substances of the water receiving disc 3, so that professional maintenance personnel are required to examine and repair.

If not, controlling the whole air conditioner to restart. And at this time, after the air conditioner is restarted and operated as a whole, the steps S1-S3 are re-executed, namely, after the air conditioner is restarted and operated for a set time, a first real-time temperature value and an indoor environment temperature value at the same moment are circularly acquired at each interval of detection period again, a temperature difference value between the first real-time temperature value and the indoor environment temperature value at the same moment is calculated, whether the water receiving disc 3 is blocked by water drainage is judged, and the air conditioner is further controlled to execute corresponding operation according to a judgment result.

In a specific example, after the flow of the anti-blocking cleaning device for running the air conditioner is finished, the number of times n of shutdown in a set period delta t is detected, and in an example, when n is less than 3, the whole machine is restarted to run, the compressor is restarted to run, the anti-blocking detection logic is automatically started, the temperature is acquired and the cycle is calculated in the period of the detection period delta t', and meanwhile, the main board 1 is controlled to record the number of times n of shutdown of the compressor in the delta t time. The compressor can be operated again only by restarting the whole machine after power is cut off.

In a specific example, when n is more than or equal to 3, the compressor continuously detects the shutdown for 3 times in the set period delta t, the control main board 1 receives a signal to control the display to display the water full protection fault code, and meanwhile, the compressor is shut down, the water full protection fault code is displayed, and the fan operates normally.

The specific adjustment is made according to the actual running condition of different air conditioners to the number of times that the compressor is stopped in the set period delta t, the preset value of the number of times is not limited to 3 in the internal machine control main board 1, and when the number of times that the compressor is stopped in the set period delta t reaches or exceeds the set number of times, a voice reminding function can be added to remind a user to report after-sales maintenance through the water receiving disc 3.

When the situation of full water is not detected, that is, the temperature difference between the first real-time temperature value and the indoor environment temperature value is smaller than the preset temperature value in the running process of the air conditioner, the water level of the condensed water in the water receiving disc 3 does not reach the first threshold water level all the time, the first temperature sensor 2 does not contact the condensed water, further, the accumulated running time of the whole machine refrigerating mode is recorded, and when the accumulated running time exceeds the set threshold value, the flow of the anti-blockage cleaning device is operated.

The detection method for preventing and blocking the water drain is applied to detection of blocking the water drain of the water receiving disc 3 of the air conditioner, can also be applied to other water drain devices, and is used for detecting whether the water drain device blocks a water drain opening due to deposition of substances such as dust, fibers and the like.

In some embodiments, the present invention also provides a drain plug detection device, including:

a first obtaining module, configured to obtain a first real-time temperature value at a first threshold water level of the water pan 3;

the second acquisition module is used for acquiring an indoor environment temperature value of the first real-time temperature corresponding to the acquisition time;

the determining module is used for determining whether the water receiving disc 3 is blocked by water drainage according to whether the difference value between the first real-time temperature value and the indoor environment temperature value at the same moment is larger than or equal to a preset temperature value, and if so, determining that the water receiving disc 3 is blocked by water drainage; if not, determining that the water receiving disc 3 is not blocked by water discharge.

In a specific example, a first temperature sensor 2 is disposed at a first threshold water level of the water pan 3, the first temperature sensor 2 is configured to detect a first real-time temperature value at the first threshold water level of the water pan 3, the first temperature sensor 2 is in signal connection with the internal control main board 1, and the detected temperature signal is transmitted to the control main board 1.

In a specific example, the first obtaining module obtains the first real-time temperature value every interval of detection and weekly measurement, and correspondingly, the second obtaining module sends the indoor environment temperature value every interval of detection and weekly measurement.

In a specific example, the indoor environment temperature is directly read by the indoor unit control main board 1, and when the first temperature sensor 2 detects the first real-time temperature value in the interval detection period and sends the first real-time temperature value to the control main board 1, the control main board 1 simultaneously obtains the indoor environment temperature value at the same moment.

When the air conditioner is unbalanced in installation or the drainage structure is blocked, the condensed water cannot be rapidly drained, the longer the air conditioner is in operation, the more accumulated condensed water is, the higher the condensed water level in the water receiving disc 3 is, until the condensed water is in contact with the first temperature sensor 2, the first real-time temperature value detected by the first temperature sensor 2 is transmitted to the internal control main board 1 of the air conditioner through a signal line, and as the condensed water temperature at the evaporator is lower than the indoor environment temperature value (indoor air temperature), the temperature difference exists between the first real-time temperature value corresponding to the condensed water at the first threshold water level and the indoor environment temperature value, the temperature difference also exists between the first real-time temperature value corresponding to the air at the first threshold water level and the indoor environment temperature value, and the condensed water temperature and the air temperature at the same height in the water receiving disc 3 are also different at the same moment/time, so that whether the water receiving disc 3 is blocked or not is judged according to the principle, namely whether the water receiving disc 3 is full of water (the condensed water level reaches or exceeds the first threshold), so that the air conditioner or the user is blocked or the water is full, and the problem of the air conditioner is avoided from running down.

In some embodiments, the present invention further provides an air conditioner, including using the above-mentioned method for detecting drain blockage or the above-mentioned device for detecting drain blockage.

The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software that is executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated in one processing unit, each unit may exist alone physically, or two or more units may be integrated in one unit.

In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A drain plug detection method, comprising:

acquiring a first real-time temperature value at a first threshold water level of the water pan;

meanwhile, an indoor environment temperature value is also obtained;

and determining whether the water receiving disc is blocked by water drainage according to the temperature difference value between the first real-time temperature value and the indoor environment temperature value at the same time.

2. The method according to claim 1, wherein determining whether the drain pan is clogged with water is performed based on a temperature difference between the first real-time temperature value and an indoor environment temperature value at the same time, specifically comprising:

judging whether the temperature difference value between the first real-time temperature value and the indoor environment temperature value is larger than or equal to a preset temperature value;

if yes, determining that the drain of the water receiving disc is blocked;

if not, determining that the water receiving disc is not blocked by water drainage.

3. The drain plug detection method according to claim 1, wherein the first real-time temperature value and the indoor environmental temperature value are acquired every interval of detection period.

4. The drain plug detection method according to claim 2, wherein determining whether the water pan is plugged includes:

if the drain blockage of the water receiving disc is determined, controlling a compressor of the air conditioner to stop, and operating an anti-blockage cleaning device in the water receiving disc until the temperature difference value between the first real-time temperature value and the indoor environment temperature value is smaller than a preset temperature value and the preset time is maintained;

and if the water receiving disc is not blocked by water drainage, controlling the air conditioner to normally operate.

5. The method of detecting clogging of a drain as set forth in claim 4, further comprising, after controlling said compressor to stop, operating an anti-clogging cleaning device:

acquiring the shutdown times of the compressor in a set period;

judging whether the shutdown times of the compressor are more than or equal to set times;

if yes, displaying a water full protection fault code, and controlling the air conditioner to stop integrally;

if not, controlling the whole air conditioner to restart.

6. The drain plug detection method of claim 1, wherein a first temperature sensor is mounted on a first threshold level of the drip tray, the first temperature sensor being configured to detect a first real-time temperature.

7. The method of claim 1, wherein the first temperature sensor is installed at the same height as the first threshold water level of the water receiving tray.

8. The method of claim 1, wherein the indoor ambient temperature is an air inlet temperature of an air conditioner.

9. A drain plug detection device, comprising:

the first acquisition module is used for acquiring a first real-time temperature value at a first threshold water level of the water pan;

the second acquisition module is used for acquiring an indoor environment temperature value of the first real-time temperature corresponding to the acquisition time;

the determining module is used for determining whether the drain of the water receiving disc is blocked or not according to whether the temperature difference value between the first real-time temperature value and the indoor environment temperature value at the same moment is larger than or equal to a preset temperature value, and if so, determining that the drain of the water receiving disc is blocked; if not, determining that the water receiving disc is not blocked by water drainage.

10. An air conditioner comprising a drain blockage detection method as claimed in any one of claims 1 to 8.