CN111397135A - Fluorine-lack detection control method of air conditioner and air conditioner - Google Patents
Fluorine-lack detection control method of air conditioner and air conditioner Download PDFInfo
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- CN111397135A CN111397135A CN202010255708.7A CN202010255708A CN111397135A CN 111397135 A CN111397135 A CN 111397135A CN 202010255708 A CN202010255708 A CN 202010255708A CN 111397135 A CN111397135 A CN 111397135A
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- air conditioner
- compressor
- fluorine
- fluorine deficiency
- control method
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- 238000000034 method Methods 0.000 title claims description 39
- 238000001514 detection method Methods 0.000 title claims description 37
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 104
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 104
- 239000011737 fluorine Substances 0.000 claims abstract description 104
- 230000007812 deficiency Effects 0.000 claims abstract description 86
- 239000003507 refrigerant Substances 0.000 claims abstract description 25
- 230000002950 deficient Effects 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The invention belongs to the technical field of air conditioners, and aims to solve the problem that the actual fluorine deficiency condition of an air conditioner cannot be accurately reflected by determining the fluorine deficiency amount by adopting the difference value between the exhaust temperature of a compressor and the outer surface temperature of a compressor body of the existing air conditioner. Acquiring the working current of a compressor; judging whether the working current of the compressor is within a preset current interval or not; if the working current of the compressor is not in the preset current interval, further acquiring the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit; calculating the difference between the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit; and determining the fluorine deficiency amount of the air conditioner according to the difference value. The invention can reflect the parameters of the real running condition of the air conditioner, thereby greatly improving the accuracy of detecting the fluorine lack condition of the air conditioner and improving the user experience.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides a fluorine deficiency detection control method of an air conditioner and the air conditioner.
Background
An air conditioner is a device capable of adjusting the temperature of an indoor environment, and can cool, heat, dehumidify, etc. an indoor space.
The content of the Freon in the existing air conditioner is gradually reduced due to leakage along with the time lapse in the operation process, so that the system of the air conditioner lacks of the Freon, and the heat exchange effect of the air conditioner is worsened due to the lack of the Freon, so that the air conditioner needs to be supplemented with the Freon in time. Therefore, some technical solutions for automatically detecting whether the air conditioner is lack of fluorine by the air conditioner have appeared in the prior art, for example, patent document No. 201710002111.X discloses a control method for detecting fluorine lack of the air conditioner and the air conditioner, which determines the fluorine lack amount by the difference between the exhaust temperature of the compressor and the outer surface temperature of the compressor body, and this method has disadvantages that the outer surface temperature of the compressor body is affected by the ambient temperature, the compressor is located outdoors, the outer surface temperature of the compressor body is low in winter, and the outer surface temperature of the compressor body is high in summer, so that the fluorine lack condition of the air conditioner cannot be accurately reflected.
Therefore, there is a need in the art for a new fluorine deficiency detection control method for an air conditioner and a corresponding air conditioner 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 fluorine deficiency amount determined by the difference between the discharge temperature of the compressor and the outer surface temperature of the compressor body of the existing air conditioner cannot accurately reflect the real fluorine deficiency condition of the air conditioner, the invention provides a fluorine deficiency detection control method of the air conditioner, wherein the air conditioner comprises the compressor and an outdoor unit, and the fluorine deficiency detection control method comprises the following steps: acquiring the working current of a compressor; judging whether the working current of the compressor is within a preset current interval or not; if the working current of the compressor is not in the preset current interval, further acquiring the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit; calculating the difference between the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit; and determining the fluorine deficiency amount of the air conditioner according to the difference value.
In the preferable technical scheme of the fluorine deficiency detection control method, the difference value is in direct proportion to the fluorine deficiency.
In a preferred embodiment of the above fluorine deficiency detection control method, the step of "determining the fluorine deficiency of the air conditioner according to the difference" specifically includes: if the difference is smaller than the first preset value, the fluorine deficiency is less than 20%; if the difference is greater than or equal to the first preset value and less than or equal to the second preset value, the fluorine deficiency is 20-50%; if the difference is larger than the second preset value, the fluorine deficiency is more than 50%.
In the above preferred technical solution of the fluorine deficiency detection control method, "obtaining the operating current of the compressor" specifically includes: enabling the air conditioner to run in a refrigerating mode, enabling the compressor to run at a fixed frequency, enabling a fan of an outdoor unit to rotate at a first set rotating speed, enabling a fan of an indoor unit of the air conditioner to rotate at a second set rotating speed and enabling an electronic expansion valve of the air conditioner to keep a set opening degree; the working current of the compressor is obtained after the set time.
In a preferred embodiment of the fluorine deficiency detection control method, the fluorine deficiency detection control method further includes, in addition to the step of "operating the compressor at a constant frequency": the air deflector of the indoor unit is adjusted to the maximum opening degree.
In a preferred embodiment of the fluorine deficiency detection control method, the fluorine deficiency detection control method further includes, at the same time as or after the step of "determining the amount of fluorine deficiency of the air conditioner": and displaying the fluorine deficiency amount of the air conditioner.
In a preferred technical solution of the above fluorine deficiency detection control method, the step of "displaying the fluorine deficiency amount of the air conditioner" specifically includes: the remote controller of the air conditioner displays the fluorine lack amount of the air conditioner.
In a preferred technical solution of the above fluorine deficiency detection control method, the step of "displaying the fluorine deficiency amount of the air conditioner" specifically includes: the display panel of the air conditioner displays the fluorine deficiency of the air conditioner.
In the preferred technical solution of the above fluorine deficiency detection control method, the step of communicating the air conditioner with the user terminal and "displaying the fluorine deficiency of the air conditioner" specifically includes: sending fluorine deficiency information to a user terminal; and displaying the fluorine lack amount of the air conditioner by the user terminal.
In another aspect, the present invention also provides an air conditioner including a controller configured to be able to execute the above-described fluorine deficiency detection control method.
The technical scheme includes that whether the air conditioner is lack of fluorine or not can be judged by obtaining the working current of the compressor and based on the working current, and then the fluorine lack amount of the air conditioner is determined based on the difference value between the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit.
Further, the air conditioner is enabled to run in a refrigerating mode, the compressor is enabled to run at a fixed frequency, the fan of the outdoor unit is enabled to rotate at a first set rotating speed, the fan of the indoor unit of the air conditioner is enabled to rotate at a second set rotating speed, and the electronic expansion valve of the air conditioner is enabled to keep a set opening degree; the working current of the compressor is obtained after the set time. By the control mode, the working current of the compressor is acquired only when the air conditioner is in a steady state, so that the accuracy of judging the lack of fluorine in the air conditioner is further improved.
Drawings
Fig. 1 is a flow chart of a fluorine deficiency detection 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.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "middle", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention provides a fluorine-deficient detection control method of an air conditioner and the air conditioner, aiming at accurately reflecting the real fluorine-deficient condition of the air conditioner, wherein the exhaust temperature of a compressor and the outlet refrigerant temperature of an outdoor unit are both the temperatures of refrigerants and cannot be influenced by environmental factors, but can reflect the parameters of the real running condition of the air conditioner, thereby greatly improving the accuracy of the air conditioner in detecting the fluorine-deficient condition and improving the user experience.
Specifically, the air conditioner comprises an indoor unit, an outdoor unit, a compressor, an electronic expansion valve and a four-way valve, wherein the indoor unit, the outdoor unit, the compressor and the electronic expansion valve form a refrigerant circulation loop, and the four-way valve is used for switching the air conditioner between a cooling mode and a heating mode. The indoor unit is located indoors, the outdoor unit and the compressor are located outdoors, and in addition, the indoor unit and the outdoor unit respectively comprise components such as a fan and the like. Further, the air conditioner of the present invention further includes a controller configured to be able to execute the fluorine deficiency detection control method of the present invention. As shown in fig. 1, the fluorine deficiency detection control method of the present invention includes: acquiring the working current of a compressor; judging whether the working current of the compressor is within a preset current interval or not; if the working current of the compressor is not in the preset current interval, further acquiring the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit; calculating the difference between the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit; and determining the fluorine deficiency amount of the air conditioner according to the difference value. The specific range of the preset current interval can be flexibly set by a person skilled in the art according to the number of the air conditioners, for example, the preset current interval can be set to 3-4A for 1 p air conditioners, to 3.5-4.5A for 1.25 p air conditioners, and to 4-5A for 1.5 p air conditioners, and of course, the above-mentioned example preset current interval is only exemplary and does not constitute any limitation to the present invention. Further, a discharge temperature sensor may be provided at a discharge port of the compressor to detect a discharge temperature of the compressor, and an outlet refrigerant temperature sensor may be provided at a pipe outlet of the outdoor unit to detect an outlet refrigerant temperature of the outdoor unit. The exhaust temperature sensor and the outlet refrigerant temperature sensor are both connected with the controller to feed back temperature information to the controller. In the present invention, it is preferable to obtain the operating current of the compressor in real time, and obtain the discharge temperature of the compressor and the outlet refrigerant temperature of the outdoor unit in real time, that is, to obtain and judge in real time, so as to determine the fluorine deficiency condition of the air conditioner in time.
Through repeated experiments, analysis and comparison of the inventor, the fluorine deficiency condition of the air conditioner can be reflected most accurately by obtaining the refrigerant temperature of two different positions, the refrigerant temperature and the fluorine deficiency quantity are directly related through measurement and calculation of experimental data, compared with the prior art that the fluorine deficiency quantity of the air conditioner is determined by adopting the difference value of the exhaust temperature of the compressor and the outer surface temperature of the machine body of the compressor, the invention can greatly improve the accuracy of the fluorine deficiency quantity of the air conditioner, firstly, the working current of the compressor is obtained, whether the air conditioner is deficient or not is judged based on the working current of the compressor, then, the fluorine deficiency quantity of the air conditioner can be determined through the difference value of the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit, and the fluorine deficiency of the air conditioner can be further determined, namely, the fluorine deficiency of the air conditioner is determined through the working current of the compressor and the difference value of the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit, the situation that misjudgment can occur due to the adoption of a single parameter is avoided. It should be noted that the working current of the compressor may fluctuate when the air conditioner is in an unstable state, and the detection of the discharge temperature of the compressor and the outlet refrigerant temperature of the outdoor unit is also prone to deviation, but the probability that the working current of the compressor, the discharge temperature of the compressor and the outlet refrigerant temperature of the outdoor unit are all deviated is very low, so that the air conditioner performs initial judgment by the working current of the compressor, and then performs judgment again by the discharge temperature of the compressor and the outlet refrigerant temperature of the outdoor unit, thereby avoiding the occurrence of erroneous judgment of the air conditioner, and accurately determining the fluorine deficiency of the air conditioner according to the difference between the discharge temperature of the compressor and the outlet refrigerant temperature of the outdoor unit, so that maintenance personnel can accurately determine the amount of Freon to be supplemented.
Preferably, the difference between the discharge temperature of the compressor and the outlet refrigerant temperature of the outdoor unit is proportional to the fluorine deficiency of the air conditioner, and of course, the difference and the fluorine deficiency may have other proportional relations. In one possible case, the step of "determining the fluorine deficiency of the air conditioner according to the difference" specifically comprises: if the difference is less than the first preset value, the fluorine deficiency is less than 20% (namely less than 20%); if the difference is greater than or equal to the first preset value and less than or equal to the second preset value, the fluorine deficiency is 20% to 50% (i.e., greater than or equal to 20% and less than or equal to 50%); if the difference is greater than the second preset value, the fluorine deficiency is more than 50% (i.e., greater than 50%). The first preset value may be 2 ℃, the second preset value may be 5 ℃, and of course, the first preset value and the second preset value are only exemplary, and those skilled in the art may flexibly set the specific proportional corresponding relationship in practical application.
Preferably, the step of "obtaining the operating current of the compressor" specifically includes: enabling the air conditioner to run in a refrigerating mode, enabling the compressor to run at a fixed frequency, enabling a fan of an outdoor unit to rotate at a first set rotating speed, enabling a fan of an indoor unit of the air conditioner to rotate at a second set rotating speed and enabling an electronic expansion valve of the air conditioner to keep a set opening degree; the working current of the compressor is obtained after the set time. Through such control mode for the air conditioner refrigeration operation a period, the air conditioner is in relatively stable state this time, just acquires the operating current of compressor this moment, can greatly avoid the compressor the undulant condition of electric current to further improve the accuracy that detects. It should be noted that, the difference between the starting current of the compressor and the normal operating current is relatively large, and the starting current of the general compressor is 5 times of the normal operating current, so that the compressor is operated at a fixed frequency, the fan of the outdoor unit rotates at a first set rotating speed, the fan of the indoor unit of the air conditioner rotates at a second set rotating speed, and the electronic expansion valve of the air conditioner keeps a set opening degree, so that the air conditioner keeps a steady state, the operating current of the compressor is the normal operating current, the fluctuation is extremely small, and the accuracy of judging the operating current of the compressor is improved. The setting time may be 5 minutes or 10 minutes, and the specific value of the preset time is only exemplary, and a person skilled in the art may set the setting time flexibly in practical applications, and such adjustment and change of the specific value of the setting time do not limit the present invention, and should be limited within the protection scope of the present invention. Further preferably, the method for controlling fluorine deficiency detection according to the present invention further includes, at the same time as the step of "operating the compressor at a constant frequency": the air deflector of the indoor unit is adjusted to the maximum opening degree.
Preferably, simultaneously with or after the step of "determining the fluorine deficiency amount of the air conditioner", the fluorine deficiency detection control method of the present invention further comprises: and displaying the fluorine deficiency amount of the air conditioner. The specific way of displaying the fluorine deficiency of the air conditioner can be that a remote controller of the air conditioner displays the fluorine deficiency of the air conditioner; or the display panel of the air conditioner displays the fluorine lack quantity of the air conditioner; or the air conditioner is communicated with a user terminal (such as a mobile phone, a flat panel and the like), the fluorine deficiency information is sent to the user terminal, and then the user terminal displays the fluorine deficiency of the air conditioner. The specific way of displaying the fluorine deficiency of the air conditioner can be flexibly set by a person skilled in the art in practical application, and the adjustment and the change of the fluorine deficiency of the air conditioner do not limit the invention and are all limited within the protection scope of the invention.
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 fluorine deficiency detection control method of an air conditioner is characterized in that the air conditioner comprises a compressor and an outdoor unit, and the fluorine deficiency detection control method comprises the following steps:
acquiring the working current of the compressor;
judging whether the working current of the compressor is within a preset current interval or not;
if the working current of the compressor is not in the preset current interval, further acquiring the exhaust temperature of the compressor and the outlet refrigerant temperature of the outdoor unit;
calculating a difference value between the discharge temperature of the compressor and the outlet refrigerant temperature of the outdoor unit;
and determining the fluorine lack amount of the air conditioner according to the difference value.
2. The fluorine deficiency detection control method according to claim 1, wherein the difference is proportional to the fluorine deficiency amount.
3. The fluorine deficiency detection control method according to claim 2, wherein the step of determining the fluorine deficiency of the air conditioner based on the difference specifically comprises:
if the difference is smaller than a first preset value, the fluorine deficiency is less than 20%;
if the difference value is greater than or equal to the first preset value and less than or equal to a second preset value, the fluorine deficiency is 20-50%;
and if the difference is larger than the second preset value, the fluorine deficiency is more than 50%.
4. The fluorine deficiency detection control method according to claim 1, wherein the step of "obtaining the operating current of the compressor" specifically comprises:
enabling the air conditioner to run in a refrigerating mode, enabling the compressor to run at a fixed frequency, enabling a fan of the outdoor unit to rotate at a first set rotating speed, enabling a fan of an indoor unit of the air conditioner to rotate at a second set rotating speed, and enabling an electronic expansion valve of the air conditioner to keep a set opening degree;
and obtaining the working current of the compressor after a set time.
5. The fluorine deficiency detection control method according to claim 4, wherein the fluorine deficiency detection control method further comprises, simultaneously with the step of "operating the compressor at a constant frequency":
and adjusting the air deflector of the indoor unit to the maximum opening degree.
6. The fluorine deficiency detection control method according to claim 1, wherein, at the same time as or after the step of "determining the amount of fluorine deficiency of the air conditioner", the fluorine deficiency detection control method further comprises:
and displaying the fluorine deficiency amount of the air conditioner.
7. The fluorine deficiency detection control method according to claim 6, wherein the step of displaying the fluorine deficiency amount of the air conditioner specifically comprises:
and displaying the fluorine lack amount of the air conditioner by using a remote controller of the air conditioner.
8. The fluorine deficiency detection control method according to claim 6, wherein the step of displaying the fluorine deficiency amount of the air conditioner specifically comprises:
and displaying the fluorine lack amount of the air conditioner on a display panel of the air conditioner.
9. The fluorine deficiency detection control method according to claim 6, wherein the step of communicating the air conditioner with a user terminal to "display the fluorine deficiency amount of the air conditioner" specifically comprises:
sending fluorine deficiency information to the user terminal;
and displaying the fluorine lack amount of the air conditioner by the user terminal.
10. An air conditioner characterized by comprising a controller configured to be able to execute the fluorine deficiency detection control method of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255708.7A CN111397135A (en) | 2020-04-02 | 2020-04-02 | Fluorine-lack detection control method of air conditioner and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010255708.7A CN111397135A (en) | 2020-04-02 | 2020-04-02 | Fluorine-lack detection control method of air conditioner and air conditioner |
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| CN111397135A true CN111397135A (en) | 2020-07-10 |
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| CN202010255708.7A Pending CN111397135A (en) | 2020-04-02 | 2020-04-02 | Fluorine-lack detection control method of air conditioner and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556093A (en) * | 2020-12-04 | 2021-03-26 | 广东积微科技有限公司 | Method and device for calculating heating running time of fixed-frequency air conditioner and computer equipment |
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| JPH08128765A (en) * | 1994-10-31 | 1996-05-21 | Matsushita Electric Ind Co Ltd | Compressor protective controller for air conditioner |
| JP2008267761A (en) * | 2007-04-25 | 2008-11-06 | Matsushita Electric Ind Co Ltd | Refrigerating cycle device |
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Application publication date: 20200710 |