CN107702283B - Self-cleaning control method for air conditioner - Google Patents
Self-cleaning control method for air conditioner Download PDFInfo
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- CN107702283B CN107702283B CN201710898878.5A CN201710898878A CN107702283B CN 107702283 B CN107702283 B CN 107702283B CN 201710898878 A CN201710898878 A CN 201710898878A CN 107702283 B CN107702283 B CN 107702283B
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- air conditioner
- expansion valve
- electronic expansion
- self
- opening
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- 238000004140 cleaning Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000013507 mapping Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 abstract description 23
- 238000009825 accumulation Methods 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
- F24F2221/225—Cleaning ducts or apparatus using a liquid
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- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of air conditioners, and particularly relates to a self-cleaning control method of an air conditioner. In order to solve the problem that the working efficiency of the air conditioner is influenced by the accumulation of dust and dirt in the air conditioner caused by neglecting the self-cleaning function of the air conditioner by a user, the method comprises the following steps: acquiring the opening degree of an electronic expansion valve of the air conditioner in the refrigerating operation process of the air conditioner; comparing the opening degree of the electronic expansion valve with the opening degree of a standard electronic expansion valve; judging whether to control the air conditioner to enter a self-cleaning mode or not according to the comparison result; and the standard opening degree of the electronic expansion valve is measured when the indoor unit is in a clean state. The method of the invention can lead the air conditioner to automatically judge whether the indoor machine has dust and dirt, and further determine whether the air conditioner enters the self-cleaning mode, and does not need a user to manually control the air conditioner to enter the self-cleaning mode, thus leading the air conditioner to be more intelligent.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a self-cleaning control method of an air conditioner.
Background
After the air conditioner is placed or used for a long time, a large amount of dust and dirt exists in the air conditioner. The dust and dirt are attached to a heat exchanger of the indoor unit, so that on one hand, the heat exchange performance of the heat exchanger is reduced, and the performance of the air conditioner is reduced; on the other hand, the dust and dirt are easy to be attached to breed bacteria and form mildew, and the bacteria and the mildew can generate peculiar smell in the unit, if the peculiar smell is not cleaned in time, the health of the air conditioner user is seriously threatened.
The self-cleaning of the air conditioner is mainly a control method for utilizing the heat exchanger to condense frost and then melt and wash the heat exchanger, and at present, the self-cleaning of the air conditioner is mainly manually entered in a remote controller or a wire controller mode. On the one hand, the above-mentioned way of entering self-cleaning is not intelligent enough; on the other hand, most users often ignore the self-cleaning function of the air conditioner, so that the self-cleaning function of the air conditioner is in an unused state for a long time, and the phenomenon that more dust and dirt are accumulated in the air conditioner is caused, thereby influencing the working efficiency of the air conditioner and reducing the use experience of the users.
Therefore, the present invention needs a new method to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the working efficiency of the air conditioner is affected by the accumulation of the dirt in the air conditioner caused by the user neglecting the self-cleaning function of the air conditioner, the present invention provides a self-cleaning control method of the air conditioner, which comprises the following steps: acquiring the opening degree of an electronic expansion valve of the air conditioner in the refrigerating operation process of the air conditioner; comparing the opening degree of the electronic expansion valve with the opening degree of a standard electronic expansion valve; and judging whether to control the air conditioner to enter a self-cleaning mode or not according to the comparison result.
In a preferred embodiment of the above method, the step of "acquiring an opening degree of an electronic expansion valve of an air conditioner" specifically includes: and acquiring the opening of the electronic expansion valve of the air conditioner at preset intervals.
In a preferred embodiment of the above method, the step of "comparing the electronic expansion valve opening degree with a standard electronic expansion valve opening degree" specifically includes: calculating the difference value between the opening of the electronic expansion valve obtained at preset time intervals and the opening of a standard electronic expansion valve; the step of determining whether to control the air conditioner to enter the self-cleaning mode according to the comparison result includes: judging whether the difference value is smaller than a set threshold value or not; and if the difference value is smaller than the set threshold value and occurs n times continuously, controlling the air conditioner to enter a self-cleaning mode.
In a preferred embodiment of the above method, the step of "controlling the air conditioner to enter the self-cleaning mode" specifically includes: detecting whether the air conditioner receives a shutdown signal; if not, the air conditioner is enabled to continuously maintain the current working condition; if yes, the air conditioner is controlled to enter a self-cleaning mode.
In a preferred embodiment of the foregoing method, the step of "calculating a difference between the opening of the electronic expansion valve obtained at preset time intervals and a standard opening of the electronic expansion valve" specifically includes: acquiring the air inlet temperature and the outdoor environment temperature of an indoor unit of an air conditioner at each preset time; acquiring the opening degree of a standard electronic expansion valve matched with the air inlet temperature of the indoor unit of the air conditioner and the outdoor environment temperature; and calculating the difference value of the opening of the electronic expansion valve and the opening of the standard electronic expansion valve.
In a preferred embodiment of the above method, the step of "obtaining an opening of the standard electronic expansion valve matching with the intake air temperature of the indoor unit of the air conditioner and the outdoor environment temperature" specifically includes: and inquiring the opening degree of the standard electronic expansion valve from a pre-stored mapping table of the inlet air temperature, the outdoor environment temperature and the opening degree of the standard electronic expansion valve according to the inlet air temperature and the outdoor environment temperature of the indoor unit of the air conditioner.
In a preferred embodiment of the above process, said n is 3; and/or the preset time is 4 hours.
In a preferred embodiment of the above method, the method further comprises: detecting the times of the air conditioner continuously entering a self-cleaning mode; and judging whether to remind a user to clean the indoor unit or not according to the frequency of the air conditioner continuously entering the self-cleaning mode.
In a preferred embodiment of the above method, the step of determining whether to remind a user to clean the indoor unit according to the number of times that the air conditioner continuously enters the self-cleaning mode specifically includes: and when the number of times that the air conditioner continuously enters the self-cleaning mode is more than or equal to m, reminding a user of cleaning the indoor unit.
In a preferred embodiment of the above method, said m is 3.
By the technical scheme of the invention, the air conditioner can automatically judge whether the indoor unit has dust and dirt, and further determine whether to control the air conditioner to enter the self-cleaning mode, and a user does not need to manually control the air conditioner to enter the self-cleaning mode, so that the air conditioner is more intelligent. The method effectively avoids the situation and eliminates the influence of the air conditioner on the health of a human body in the using process because the user often ignores the self-cleaning function of the air conditioner, so that the indoor unit runs under the condition of dust and dirt for a long time and the health of the user is influenced. In a preferred embodiment, when the indoor unit of the air conditioner is judged to be attached with dust and dirt, the air conditioner is controlled to automatically enter a self-cleaning mode, so that the indoor unit of the air conditioner is cleaned in time. And because the self-cleaning mode is entered after the stop signal is detected, the normal use of the air conditioner is not influenced, and the use experience of a user is greatly improved. In addition, the method can remind the user of cleaning the indoor unit in time under the condition that the dust and dirt of the indoor unit are accumulated excessively.
Drawings
FIG. 1 is a schematic diagram illustrating the main steps of a self-cleaning control method of an air conditioner according to the present invention;
fig. 2 is a detailed flowchart illustrating a self-cleaning control method of an air conditioner according to the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the steps of the method of the present invention are described herein in a particular order, these orders are not limiting, and one skilled in the art may perform the steps in a different order without departing from the underlying principles of the invention.
As shown in fig. 1, the self-cleaning control method of the air conditioner of the present invention includes the following steps: s110, acquiring the opening of an electronic expansion valve of the air conditioner in the refrigerating operation process of the air conditioner; s120, comparing the opening of the electronic expansion valve with the opening of a standard electronic expansion valve; and S130, judging whether the air conditioner is controlled to enter a self-cleaning mode or not according to the comparison result. The standard electronic expansion valve opening is the electronic expansion valve opening measured when the indoor unit is in a clean state.
Specifically, the electronic expansion valve is mainly applied to an inverter air conditioning system to realize automatic adjustment of refrigerant flow. In the process of refrigerating operation of the air conditioner, if the indoor evaporator is in a clean state (namely, dust and dirt are not attached to the indoor evaporator), the opening degree of the electronic expansion valve is the opening degree of the standard electronic expansion valve, and after the dust and dirt are attached to the indoor evaporator, the heat exchange of the indoor evaporator is inevitably influenced, so that the capacity of the refrigerant of the indoor evaporator for absorbing external heat is reduced, the amount of vaporized liquid refrigerant in the evaporator is reduced, and the superheat degree is reduced. At this time, the air conditioner adjusts the opening degree of the electronic expansion valve (reduces the opening degree of the electronic expansion valve) to reduce the amount of the liquid refrigerant entering the indoor evaporator, thereby ensuring the degree of superheat of the air conditioner. Based on this, through will acquire the electronic expansion valve opening with standard electronic expansion valve opening carry out the comparison, can accurately judge whether indoor evaporimeter adheres to there is the dirt, and then decide whether control air conditioner enters the automatically cleaning mode.
Therefore, through the steps S110 to S130, the air conditioner determines whether to control the air conditioner to enter the self-cleaning mode by automatically judging whether the indoor unit has dust or dirt, and does not need to manually control the air conditioner to enter the self-cleaning mode by a user, so that the air conditioner is more intelligent, and the use experience of the user is greatly improved. In addition, because users often ignore the self-cleaning function of the air conditioner, the indoor unit runs for a long time under the condition of dust and dirt, and the health of the users is influenced.
An embodiment of the present invention is described in detail below with reference to fig. 2.
Fig. 2 is a detailed flowchart illustrating a self-cleaning control method of an air conditioner according to the present invention. As shown in fig. 2, step S210 is first executed to obtain the opening a of the electronic expansion valve of the air conditioner every 4 hours (preset time) during the cooling operation of the air conditioner. In the step, the air inlet temperature and the outdoor environment temperature of the indoor unit of the air conditioner are obtained at the same time, before or after the opening degree A of the electronic expansion valve is obtained. Then, the method proceeds to step S220, where the opening A of the electronic expansion valve and the standard electronic expansion are calculatedOpening degree A of expansion valve0Wherein Δ a ═ a-a0. In this step, the standard electronic expansion valve opening degree A0Opening degree A of the standard electronic expansion valve matched with the inlet air temperature and the outdoor environment temperature of the indoor unit of the air conditioner obtained in the step S2100. Specifically, a mapping table of the inlet air temperature and the outdoor environment temperature with the opening degree of the standard electronic expansion valve is established in advance, and the mapping table is stored in advance in the air conditioner. In step S210, when the opening of the electronic expansion valve is obtained, the intake air temperature and the outdoor environment temperature are obtained together, so that the standard opening a of the electronic expansion valve corresponding to the intake air temperature and the outdoor environment temperature can be found based on the pre-stored mapping table0. Thus, A and A are compared under the same conditions (same intake air temperature and outdoor ambient temperature)0The difference value can more accurately judge whether the indoor unit of the air conditioner is attached with dust and dirt, and the misjudgment risk is reduced.
Step S230 is carried out, and whether the difference value delta A is smaller than a set threshold value is judged; if the difference value delta A is smaller than the set threshold value and appears for 3(n) times continuously, the situation that the indoor unit is attached with dust and dirt already influences the normal operation of the air conditioner and has certain influence on human health is shown, and then the step S240 is carried out, and whether the air conditioner receives a stop signal is detected. If the air conditioner does not receive the stop signal, controlling the air conditioner to continuously maintain the current working condition; if the air conditioner receives the stop signal, the method goes to step S250, and the air conditioner is controlled to enter the self-cleaning mode. If the difference value delta A is not smaller than the set threshold value, or the situation that the difference value delta A is smaller than the set threshold value is not related to the occurrence of 3 times, it is indicated that the indoor unit does not adhere to the dust or the attached dust has little influence on the operation of the air conditioner and the human health, and a strategy is not needed to be adopted temporarily.
In the above embodiment, the set threshold may be designed by a person skilled in the art according to the air conditioner and the actual application scenario thereof, and specifically, the person skilled in the art may select a suitable value as the set threshold through a test. In addition, the "preset time" and the "continuous occurrence number n" in the above are exemplary illustrations, and those skilled in the art can select an appropriate value of the preset time and n according to the actual application scenario of the air conditioner.
As described above, the method of the invention can accurately judge whether the indoor unit is attached with the dust and dirt, and control the air conditioner to automatically enter the self-cleaning mode under the condition that the indoor unit is attached with the dust and dirt, thereby timely cleaning the indoor unit of the air conditioner. And, because the self-cleaning mode is entered after the stop signal is detected, the normal use of the air conditioner is not influenced, and the use experience of a user is greatly improved.
Preferably, the method of the present invention further comprises: step one, detecting the times of the air conditioner entering a self-cleaning mode; step two: and judging whether to remind a user to clean the indoor unit or not according to the frequency of the air conditioner entering the self-cleaning mode. For example, when the air conditioner continuously enters the self-cleaning mode 3(m) times, the user is reminded to clean the indoor unit.
Through the steps, the degree of dust and dirt attached to the indoor unit is judged by detecting the times of the air conditioner entering the self-cleaning mode. In other words, if the air conditioner continuously enters the self-cleaning mode for 3 times, which indicates that the indoor unit is attached with more dust and dirt, the indoor unit cannot be thoroughly cleaned depending on the self-cleaning mode, and then the user can be reminded to clean the indoor unit by the user, so as to ensure that the air conditioner stably operates and prevent the influence on human health due to excessive dust and dirt accumulation.
The above m value is merely exemplary, and those skilled in the art can select other suitable m values according to the practical application scenario of the air conditioner. It should be noted that the self-cleaning mode of the air conditioner may be any known manner, such as a control method of condensing frost on the indoor evaporator and then melting and washing the evaporator, and the specific self-cleaning mode will not be described herein.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A self-cleaning control method of an air conditioner is characterized by comprising the following steps:
acquiring the opening degree of an electronic expansion valve of the air conditioner in the refrigerating operation process of the air conditioner;
comparing the opening degree of the electronic expansion valve with the opening degree of a standard electronic expansion valve;
judging whether to control the air conditioner to enter a self-cleaning mode according to the comparison result, wherein the step specifically comprises the following steps:
judging whether the difference value of the opening of the electronic expansion valve and the opening of a standard electronic expansion valve is smaller than a set threshold value or not;
and if the difference value is smaller than the set threshold value and occurs n times continuously, controlling the air conditioner to enter a self-cleaning mode.
2. The method according to claim 1, wherein the step of obtaining the opening of the electronic expansion valve of the air conditioner specifically comprises:
and acquiring the opening of the electronic expansion valve of the air conditioner at preset intervals.
3. The method according to claim 2, wherein the step of comparing the electronic expansion valve opening with a standard electronic expansion valve opening comprises:
and calculating the difference value between the opening of the electronic expansion valve obtained at preset intervals and the opening of a standard electronic expansion valve.
4. The method as claimed in claim 3, wherein the step of controlling the air conditioner to enter the self-cleaning mode specifically comprises:
detecting whether the air conditioner receives a shutdown signal;
if not, controlling the air conditioner to continuously maintain the current working condition; if yes, the air conditioner is controlled to enter a self-cleaning mode.
5. The method according to claim 3, wherein the step of calculating the difference between the electronic expansion valve opening obtained at preset time intervals and a standard electronic expansion valve opening specifically comprises:
acquiring the air inlet temperature and the outdoor environment temperature of an indoor unit of an air conditioner at preset intervals;
acquiring the opening degree of a standard electronic expansion valve matched with the air inlet temperature of the indoor unit of the air conditioner and the outdoor environment temperature;
and calculating the difference value of the opening of the electronic expansion valve and the opening of the standard electronic expansion valve.
6. The method according to claim 5, wherein the step of obtaining the opening degree of the standard electronic expansion valve matched with the inlet air temperature and the outdoor environment temperature of the indoor unit of the air conditioner specifically comprises the following steps:
and inquiring the opening degree of the standard electronic expansion valve from a pre-stored mapping table of the inlet air temperature, the outdoor environment temperature and the opening degree of the standard electronic expansion valve according to the inlet air temperature and the outdoor environment temperature of the indoor unit of the air conditioner.
7. The method of claim 3, wherein n is 3; and/or the preset time is 4 hours.
8. The method according to any one of claims 1 to 7, further comprising:
detecting the times of the air conditioner continuously entering a self-cleaning mode;
and judging whether to remind a user to clean the indoor unit or not according to the frequency of the air conditioner continuously entering the self-cleaning mode.
9. The method as claimed in claim 8, wherein the step of determining whether to remind the user to clean the indoor unit according to the number of times the air conditioner continuously enters the self-cleaning mode specifically comprises:
and when the number of times that the air conditioner continuously enters the self-cleaning mode is more than or equal to m, reminding a user of cleaning the indoor unit.
10. The method of claim 9, wherein m is 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710898878.5A CN107702283B (en) | 2017-09-28 | 2017-09-28 | Self-cleaning control method for air conditioner |
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| CN201710898878.5A CN107702283B (en) | 2017-09-28 | 2017-09-28 | Self-cleaning control method for air conditioner |
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| CN107702283B true CN107702283B (en) | 2020-11-20 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547799A (en) * | 2018-03-16 | 2018-09-18 | 青岛海尔空调器有限总公司 | Self cleaning method and air regulator for air-supply arrangement |
| CN110469946B (en) * | 2019-08-16 | 2022-01-21 | 青岛海尔空调器有限总公司 | Air conditioner self-cleaning method and device and air conditioner |
| CN110469945B (en) * | 2019-08-16 | 2021-12-21 | 重庆海尔空调器有限公司 | Air conditioner self-cleaning method and device and air conditioner |
| CN113531780B (en) * | 2021-07-09 | 2023-03-21 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
| CN113531845B (en) * | 2021-07-09 | 2023-03-24 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in indoor heat exchanger |
| CN113654192B (en) * | 2021-07-15 | 2023-04-18 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
| CN113654197B (en) * | 2021-07-15 | 2023-05-02 | 青岛海尔空调器有限总公司 | In-tube self-cleaning control method of indoor heat exchanger |
| CN113959051B (en) * | 2021-10-08 | 2023-08-15 | 青岛海尔空调电子有限公司 | Control method for air conditioner and air conditioner |
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| CN104949413A (en) * | 2015-07-07 | 2015-09-30 | 珠海格力电器股份有限公司 | Method and device for acquiring initial opening degree of electronic expansion valve |
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| CN106895621A (en) * | 2017-02-09 | 2017-06-27 | 青岛海尔空调器有限总公司 | Air-conditioning and its control method |
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2017
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| JP2004353916A (en) * | 2003-05-28 | 2004-12-16 | Takasago Thermal Eng Co Ltd | Temperature controlling method and air conditioner |
| CN104949413A (en) * | 2015-07-07 | 2015-09-30 | 珠海格力电器股份有限公司 | Method and device for acquiring initial opening degree of electronic expansion valve |
| CN106322658A (en) * | 2016-08-23 | 2017-01-11 | 广东美的制冷设备有限公司 | Cleaning control method and device for heat exchanger of air conditioner |
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