CN106765973B - Control method for fluorine deficiency detection of air conditioner and air conditioner - Google Patents
Control method for fluorine deficiency detection of air conditioner and air conditioner Download PDFInfo
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- CN106765973B CN106765973B CN201710002114.3A CN201710002114A CN106765973B CN 106765973 B CN106765973 B CN 106765973B CN 201710002114 A CN201710002114 A CN 201710002114A CN 106765973 B CN106765973 B CN 106765973B
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 146
- 239000011737 fluorine Substances 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 title claims abstract description 62
- 230000007812 deficiency Effects 0.000 title claims abstract description 59
- 238000001514 detection method Methods 0.000 title claims description 9
- 230000008569 process Effects 0.000 claims description 23
- 230000002950 deficient Effects 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
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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
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
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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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses a control method for detecting fluorine deficiency of an air conditioner and the air conditioner, and belongs to the technical field of air conditioners. The control method comprises the following steps: detecting the suction temperature of a compressor of an air conditioner; detecting the temperature of a coil pipe of an indoor unit of an air conditioner; calculating and determining the superheat degree of the air conditioner, wherein the superheat degree is the difference between the suction temperature of the compressor and the temperature of a coil pipe of the indoor unit; determining a temperature interval in which the superheat degree difference is positioned and the fluorine lack amount of the corresponding temperature interval according to the superheat degree difference of the superheat degree and a preset target superheat degree; and controlling the air conditioner to operate in a preset protection mode according to the fluorine shortage of the air conditioner. The control method of the invention judges whether the air conditioning system lacks fluorine according to the superheat degree of the air conditioner, calculates the actual superheat degree by detecting the difference value between the suction temperature of the compressor and the temperature of the coil pipe of the indoor unit, and judges the fluorine deficiency range of the air conditioner according to the difference value between the actual superheat degree and the target superheat degree so as to remind a user to add fluorine or forcibly shut down the protection compressor, thereby effectively ensuring the safe operation of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method for fluorine deficiency detection of an air conditioner and the air conditioner.
Background
Freon is a refrigerant medium commonly used in a household or commercial air conditioner refrigerating system, and because Freon completes the state conversion of vaporization and liquefaction in a closed circulating system of an air conditioner, the common air conditioner does not need to be added with fluorine at least within 5 years even when the air conditioner is used to be scrapped. In the existing air conditioner product, due to the influence of factors such as the installation mode of the air conditioner, the welding quality of an air conditioner pipeline and the like, the problem of refrigerant leakage of the air conditioner can occur in the process, and if the air conditioner is lack of fluorine, the problems of reduction of the refrigerating and heating effects, protective shutdown, water leakage of an indoor unit, icing of an indoor evaporator and the like of the air conditioner can be caused, so that the normal use of the air conditioner is influenced.
Therefore, how to detect the fluorine content of the air conditioner to timely supplement the fluorine content when the air conditioner has a fluorine shortage problem is an important issue in the research and development of air conditioner products.
Disclosure of Invention
The embodiment of the invention provides a control method for detecting fluorine deficiency of an air conditioner and the air conditioner. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of the present invention, there is provided a control method for detecting fluorine deficiency in an air conditioner, the control method comprising: detecting the suction temperature of a compressor of an air conditioner; detecting the temperature of a coil pipe of an indoor unit of an air conditioner; calculating and determining the superheat degree of the air conditioner, wherein the superheat degree is the difference between the suction temperature of the compressor and the temperature of a coil pipe of the indoor unit; determining a temperature interval in which the superheat degree difference is positioned and the fluorine lack amount of the corresponding temperature interval according to the superheat degree difference of the superheat degree and a preset target superheat degree; and controlling the air conditioner to operate in a preset protection mode according to the fluorine shortage of the air conditioner.
Further, the control method further comprises: presetting a target superheat degree of an air conditioner and an incidence relation between outdoor environment temperature and the target superheat degree; detecting the current outdoor temperature of a space where an air conditioner is located; and determining the target superheat degree corresponding to the current outdoor temperature according to the association relation.
Further, according to the superheat degree difference value of the superheat degree and the preset target superheat degree, the temperature interval in which the superheat degree difference value is located and the fluorine lack amount of the corresponding temperature interval are determined, the process comprises the step of enabling the fluorine amount of the air conditioner to be normal when △ SH is smaller than or equal to SH1, wherein △ SH is the superheat degree difference value of the superheat degree and the preset target superheat degree.
Further, the preset protection mode of the air conditioner operation is controlled according to the fluorine deficiency of the air conditioner, and the process comprises the step of controlling and maintaining the air conditioner operation when △ SH is less than or equal to SH 1.
Further, according to the superheat degree difference value of the superheat degree and a preset target superheat degree, the temperature interval in which the superheat degree difference value is located and the fluorine lack amount of the corresponding temperature interval are determined, and the process comprises the step of determining the fluorine lack amount R of the air conditioner to be less than or equal to 30% when SH1 is more than △ and SH2 is less than or equal to SH, wherein △ SH is the superheat degree difference value of the superheat degree and the preset target superheat degree, and the fluorine lack amount R is the percentage of the fluorine lack amount of the air conditioner to the rated fluorine amount.
Further, according to the fluorine deficiency amount of the air conditioner, the preset protection mode of the air conditioner operation is controlled, and the process comprises the following steps: when the fluorine deficiency R of the air conditioner is less than or equal to 30%, controlling and maintaining the operation of the air conditioner, and pushing fluorine deficiency early warning information to a user; and if the fluorine amount of the air conditioner does not reach the rated fluorine amount after the time period t, controlling the air conditioner to stop running.
Further, according to the superheat degree difference value of the superheat degree and a preset target superheat degree, the temperature interval in which the superheat degree difference value is located and the fluorine lack amount of the corresponding temperature interval are determined, and the process comprises the step of determining the fluorine lack amount R of the air conditioner to be less than or equal to 50% when △ SH is greater than SH2, wherein △ SH is the superheat degree difference value of the superheat degree and the preset target superheat degree, and the fluorine lack amount R is the percentage of the fluorine lack amount of the air conditioner to the rated fluorine amount.
Further, according to the fluorine deficiency amount of the air conditioner, the preset protection mode of the air conditioner operation is controlled, and the process comprises the following steps: and when the fluorine lack amount R of the air conditioner is less than or equal to 50%, controlling the air conditioner to stop running, and pushing fluorine lack early warning information to a user.
Further, the lack of fluorine early warning information of propelling movement to the user, the process includes: controlling the air conditioner to send the fluorine-lack early warning information to the associated mobile terminal and pushing the information to a user; the fluorine deficiency early warning information comprises: fluorine deficiency state information of the air conditioner and fluorine adding amount information corresponding to the fluorine deficiency amount; the fluorine-deficient status information includes at least moderate fluorine deficiency and severe fluorine deficiency.
According to a second aspect of the present invention, there is also provided an air conditioner applying the control method, the air conditioner including an indoor unit and an outdoor unit, wherein the indoor unit includes a coil, the outdoor unit includes a compressor, the air conditioner further includes a first sensor for detecting a suction temperature, a second sensor for detecting a coil temperature, and a third sensor for detecting an outdoor temperature, wherein the first sensor is disposed on a suction port of the compressor, the second sensor is disposed on the coil of the indoor unit, and the third sensor is disposed on the outdoor unit.
The control method of the invention judges whether the air conditioning system lacks fluorine according to the superheat degree of the air conditioner, calculates the actual superheat degree by detecting the difference value between the suction temperature of the compressor and the temperature of the coil pipe of the indoor unit, and judges the fluorine deficiency range of the air conditioner according to the difference value between the actual superheat degree and the target superheat degree so as to remind a user to add fluorine or forcibly shut down the protection compressor, thereby effectively ensuring the safe operation of the air conditioner.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart one illustrating a control method of the present invention according to an exemplary embodiment;
fig. 2 is a flow chart diagram ii illustrating a control method of the present invention according to an exemplary embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the methods, products and the like disclosed by the embodiments, the description is simple because the methods correspond to the method parts disclosed by the embodiments, and the related parts can be referred to the method parts for description.
As shown in fig. 1 and fig. 2, the present invention provides a control method for detecting fluorine deficiency in an air conditioner, which mainly comprises the following steps:
s101, detecting the air suction temperature of a compressor of an air conditioner;
in an embodiment, the suction temperature is detected by a first sensor arranged at the suction port of the compressor;
s102, detecting the temperature of a coil pipe of an indoor unit of an air conditioner;
in the embodiment, the coil temperature is detected by a second sensor arranged at the coil of the indoor unit of the air conditioner, in order to improve the temperature detection precision, the air suction temperature and the coil temperature are detected after the compressor stably operates for a period of time, so that the problems of measurement errors and the like caused by sudden start of the compressor and large temperature change amplitude are solved;
s103, calculating and determining the superheat degree of the air conditioner, wherein the superheat degree is the difference between the suction temperature of the compressor and the temperature of a coil pipe of the indoor unit;
in the embodiment, the suction temperature of the compressor is Ts, the coil temperature of the indoor unit is Tc, and the superheat △ SH of the air conditioner is Ts-Tc;
s104, determining a temperature interval in which the superheat degree difference is positioned and the fluorine lack amount of the corresponding temperature interval according to the superheat degree difference of the superheat degree and a preset target superheat degree; the temperature interval and the fluorine lack amount corresponding to the temperature interval are determined in advance through experiments, and can be properly adjusted according to different air conditioner types;
and S105, controlling the air conditioner to operate in a preset protection mode according to the fluorine shortage of the air conditioner.
Different fluorine deficiency conditions of the air conditioner have different degrees of influence on the operation of the air conditioner, so that in order to improve the safety of the air conditioner in the operation process, different protection modes need to be started according to the specific fluorine deficiency amount of the air conditioner, and the problems of overheating of a compressor, melting of groove insulation, high-temperature burning of a coil and the like caused by the fluorine deficiency operation of the air conditioner can be further avoided.
In addition, in order to further improve the detection accuracy of the temperature parameters related to step S101 and step S102, the detection process of the suction temperature and the coil temperature continues for a set time length, for example, the suction temperature and the coil temperature are continuously detected within 5min, and the continuous detection of the related temperature data can reduce the interference influence caused by the instantaneous or short-time temperature jump, and reduce the measurement error caused by the temperature change; and calculating the average value of the suction temperature and the average value of the coil temperature within 5min, and taking the two average values as temperature parameters according to the subsequent superheat degree calculation step.
In the step S104, the preset target superheat degree is a superheat degree that needs to be reached when the air conditioner normally operates at the rated fluorine content, and since the outdoor environment temperature affects the heat exchange efficiency between the condenser and the external environment, and further affects the superheat degree that can be reached in the heat exchange process of the heat exchanger of the indoor unit, the control method of the present invention further includes:
presetting a target superheat degree of the air conditioner and an association relation between the outdoor environment temperature and the target superheat degree, wherein the association relation is the superheat degree which can be reached by normal operation of the air conditioner at rated fluorine amount under different outdoor environment temperature conditions;
detecting the current outdoor temperature of a space where an air conditioner is located; in an embodiment, the current outdoor temperature is detected by a third sensor arranged on the outdoor unit;
and after the current outdoor temperature is obtained, searching and determining a target superheat degree corresponding to the current outdoor temperature according to the association relation.
The following describes specific procedures for determining the fluorine deficiency and operating the corresponding protection mode according to the control method of the present invention with reference to some embodiments.
In the embodiment (one) of the present invention, the temperature interval in which the superheat degree difference is located and the fluorine deficiency amount of the corresponding temperature interval are determined according to the superheat degree difference between the superheat degree and the preset target superheat degree, and the process comprises:
when △ SH is less than or equal to SH1, the fluorine content of the air conditioner is normal, wherein △ SH is the difference value of the superheat degree and the preset target superheat degree, and SH1 is the set temperature interval threshold.
Meanwhile, when △ SH is less than or equal to SH1, the air conditioner can be judged to be in a normal fluorine amount state, and the influence of fluorine amount change on the normal operation of the air conditioner is small, so that the operation of the air conditioner can be controlled and maintained.
In this embodiment, the temperature interval threshold SH1 is set to 2 ℃.
In the embodiment (two) of the present invention, in the present invention, the temperature interval in which the superheat degree difference is located and the fluorine deficiency amount of the corresponding temperature interval are determined according to the superheat degree difference between the superheat degree and the preset target superheat degree, the process includes:
when SH1 is more than △ SH and less than or equal to SH2, the fluorine lack quantity R of the air conditioner is less than or equal to 30 percent, wherein △ SH is the difference value of the superheat degree and the preset target superheat degree, and the fluorine lack quantity R is the percentage of the fluorine lack quantity of the air conditioner and the rated fluorine quantity, namely in the second embodiment, when the difference value of the superheat degree is between SH1 and SH2, the fluorine lack quantity of the air conditioner is within 30 percent of the rated fluorine quantity required by the normal operation of the air conditioner.
Meanwhile, when the fluorine deficiency R of the air conditioner is less than or equal to 30 percent, the air conditioner can judge that the air conditioner is in a moderate fluorine deficiency state, and the influence of fluorine content change on the operation of the air conditioner in a short time is limited, so that the operation of the air conditioner can be controlled and maintained; in addition, the air conditioner can also send a yellow early warning signal to a user through an early warning indicator lamp arranged on the indoor unit to remind the user of timely fluorinating;
if the user does not complement the refrigerant lacking in the air conditioner after the time t, and the fluorine content of the air conditioner cannot meet the rated fluorine content requirement of the normal operation of the air conditioner, controlling the air conditioner to stop operating; after the user fills fluorine, the suction temperature of the compressor and the coil temperature of the indoor unit are detected again when the air conditioner is operated, and the long-time operation of the air conditioner can be kept after the fluorine amount of the air conditioner is judged to reach the rated fluorine amount.
In this example, the threshold temperature intervals SH1 are 2 ℃ and SH2 is 5 ℃.
In the embodiment (three) of the present invention, the temperature interval in which the superheat degree difference is located and the fluorine deficiency amount of the corresponding temperature interval are determined according to the superheat degree difference between the superheat degree and the preset target superheat degree, and the process includes:
when △ SH is more than SH2, the fluorine deficiency R of the air conditioner is less than or equal to 50 percent, wherein △ SH is the superheat degree difference between the superheat degree and the preset target superheat degree, and the fluorine deficiency R is the percentage of the fluorine deficiency of the air conditioner to the rated fluorine, namely in the third embodiment, when the superheat degree difference is more than SH2, the fluorine deficiency of the air conditioner accounts for more than 50 percent of the rated fluorine required by the normal operation of the air conditioner.
Meanwhile, when the fluorine deficiency R of the air conditioner is less than or equal to 50%, the air conditioner can be judged to be in a severe fluorine deficiency state, and the fluorine deficiency operation has a large influence on the safety of the air conditioner, so that the air conditioner needs to be controlled to stop operating; in addition, the air conditioner can also send a red early warning signal to a user through an early warning indicator lamp arranged on the indoor unit to remind the user of timely fluorinating; after the user fills fluorine, the suction temperature of the compressor and the coil temperature of the indoor unit are detected again when the air conditioner is operated, and the long-time operation of the air conditioner can be kept under the condition that the fluorine amount of the air conditioner reaches the rated fluorine amount.
In some embodiments of the invention, besides sending an early warning signal to a user through an early warning indicator lamp on an air conditioner body, the control method of the invention can also control the air conditioner to send the fluorine-lacking early warning information to a related mobile terminal, such as a mobile phone, a tablet personal computer and the like, and push the fluorine-lacking early warning information to the user through an installed app application program; optionally, the fluorine-lacking warning information includes: the information of the fluorine-deficient state of the air conditioner and the information of the fluorine-adding amount corresponding to the fluorine-deficient amount of the air conditioner correspond to the fluorine-deficient state indicated by the early warning indicator lamp, the information of the fluorine-deficient state pushed to the user through app at least comprises moderate fluorine-deficient state and severe fluorine-deficient state, so that the user can know the information of the fluorine-deficient state of the air conditioner and the like in time when the user is far away from the space where the air conditioner is located outdoors and the like.
In the control method of the present invention, the above-mentioned processes of measuring the relevant temperature parameter, determining the fluorine deficiency amount, operating the protection mode, etc. are performed in a set time period, for example, each time the air conditioner restarts to operate for a new time period, or performing fluorine amount detection in a set time period of 24 hours; the control method further comprises the following steps: the fluorine volume change in the adjacent one or several time periods of contrast, when the fluorine volume change volume exceeded preset threshold value, then to the user propelling movement air conditioner trouble early warning information, for example, in two adjacent time periods, the scarce fluorine volume of air conditioner improved to 50% by 20%, then can judge that the air conditioner appears the refrigerant and leak the problem in a large number, consequently can in time remind the user to overhaul the maintenance to the air conditioner through air conditioner trouble early warning.
The invention also provides an air conditioner applying the control method disclosed by the embodiment, the air conditioner comprises an indoor unit and an outdoor unit, wherein the indoor unit comprises a coil pipe, the outdoor unit comprises a compressor, the air conditioner also comprises a first sensor for detecting the suction temperature, a second sensor for detecting the temperature of the coil pipe and a third sensor for detecting the outdoor temperature, the first sensor is arranged on the suction port of the compressor, the second sensor is arranged on the coil pipe of the indoor unit, and the third sensor is arranged on the outdoor unit; (ii) a This air conditioner still includes the controller, and the controller mainly includes:
the acquisition unit is used for acquiring the air suction temperature of the air conditioner compressor detected by the first unit and the coil temperature of the indoor unit detected by the second unit;
the main control unit is used for calculating and determining the superheat degree of the air conditioner, wherein the superheat degree is the difference between the suction temperature of the compressor and the temperature of a coil pipe of the indoor unit; determining a temperature interval in which the superheat degree difference is positioned and the fluorine lack amount of the corresponding temperature interval according to the superheat degree difference of the superheat degree and a preset target superheat degree; and controlling the air conditioner to operate in a preset protection mode according to the fluorine shortage of the air conditioner.
Other parts and structures such as the first heat exchanger, the second heat exchanger and the throttle valve of the air conditioner are not related to the innovation point of the invention, so the details are not described.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (9)
1. A control method for detecting fluorine deficiency of an air conditioner is characterized by comprising the following steps:
presetting a target superheat degree of the air conditioner and an incidence relation between the outdoor environment temperature and the target superheat degree; detecting the current outdoor temperature of the space where the air conditioner is located; determining a target superheat degree corresponding to the current outdoor temperature according to the incidence relation; the preset target superheat degree is the superheat degree required to be achieved when the air conditioner normally operates at the rated fluorine amount;
detecting the suction temperature of a compressor of the air conditioner;
detecting the temperature of a coil pipe of an indoor unit of the air conditioner;
calculating and determining the superheat degree of the air conditioner, wherein the superheat degree is the difference between the suction temperature of the compressor and the coil temperature of the indoor unit;
determining a temperature interval in which the superheat degree difference value is positioned and a fluorine lack amount corresponding to the temperature interval according to the superheat degree difference value of the superheat degree and the preset target superheat degree;
and controlling the air conditioner to operate in a preset protection mode according to the fluorine shortage of the air conditioner.
2. A control method for detecting fluorine deficiency in an air conditioner in accordance with claim 1, wherein a temperature interval in which said difference in superheat degree is located and a fluorine deficiency amount corresponding to said temperature interval are determined based on a difference in superheat degree between said superheat degree and a preset target superheat degree, comprising the steps of:
when △ SH is less than or equal to SH1, the fluorine content of the air conditioner is normal,
wherein the △ SH is a superheat difference value of the superheat degree and a preset target superheat degree.
3. The control method for detecting the fluorine deficiency of the air conditioner as claimed in claim 2, wherein the preset protection mode of the air conditioner operation is controlled according to the fluorine deficiency of the air conditioner, and the process comprises:
controlling and maintaining the air conditioner to operate when △ SH is less than or equal to SH 1.
4. A control method for detecting fluorine deficiency in an air conditioner in accordance with claim 1, wherein a temperature interval in which said difference in superheat degree is located and a fluorine deficiency amount corresponding to said temperature interval are determined based on a difference in superheat degree between said superheat degree and a preset target superheat degree, comprising the steps of:
when SH1 is more than △ and SH is less than or equal to SH2, the fluorine-deficient quantity R of the air conditioner is less than or equal to 30 percent,
wherein the △ SH is the difference value of the superheat degree and the preset target superheat degree, and the fluorine lack quantity R is the percentage of the fluorine quantity lacking in the air conditioner to the rated fluorine quantity.
5. The control method for detecting the fluorine deficiency of the air conditioner as claimed in claim 4, wherein the preset protection mode of the air conditioner operation is controlled according to the fluorine deficiency of the air conditioner, and the process comprises:
when the fluorine deficiency R of the air conditioner is less than or equal to 30%, controlling to maintain the operation of the air conditioner, and pushing fluorine deficiency early warning information to a user;
and if the fluorine content of the air conditioner does not reach the rated fluorine content after the time period t, controlling the air conditioner to stop running.
6. A control method for detecting fluorine deficiency in an air conditioner in accordance with claim 1, wherein a temperature interval in which said difference in superheat degree is located and a fluorine deficiency amount corresponding to said temperature interval are determined based on a difference in superheat degree between said superheat degree and a preset target superheat degree, comprising the steps of:
when △ SH is more than SH2, the fluorine deficiency R of the air conditioner is less than or equal to 50 percent,
wherein the △ SH is the difference value of the superheat degree and the preset target superheat degree, and the fluorine lack quantity R is the percentage of the fluorine quantity lacking in the air conditioner to the rated fluorine quantity.
7. The control method for detecting the fluorine deficiency of the air conditioner as claimed in claim 6, wherein the preset protection mode of the air conditioner operation is controlled according to the fluorine deficiency of the air conditioner, and the process comprises:
and when the fluorine lack amount R of the air conditioner is less than or equal to 50%, controlling the air conditioner to stop running, and pushing fluorine lack early warning information to a user.
8. The control method for detecting the fluorine deficiency of the air conditioner according to claim 3, 5 or 7, wherein the process of pushing the fluorine deficiency early warning information to the user comprises the following steps: controlling an air conditioner to send the fluorine-lacking early warning information to a related mobile terminal and pushing the information to a user;
the fluorine-lacking early warning information comprises: fluorine deficiency state information of the air conditioner and fluorine adding amount information corresponding to the fluorine deficiency amount;
the fluorine-deficient state information at least comprises moderate fluorine deficiency and severe fluorine deficiency.
9. An air conditioner to which the method for controlling fluorine deficiency detection of the air conditioner according to any one of claims 1 to 8 is applied, the air conditioner comprising an indoor unit and an outdoor unit, wherein the indoor unit includes a coil, and the outdoor unit includes a compressor, wherein the air conditioner further comprises a first sensor for detecting the suction temperature, a second sensor for detecting the temperature of the coil, and a third sensor for detecting the outdoor temperature, wherein the first sensor is disposed on a suction port of the compressor, the second sensor is disposed on the coil of the indoor unit, and the third sensor is disposed on the outdoor unit.
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| CN108763721B (en) * | 2018-05-23 | 2022-09-30 | 特灵空调系统(中国)有限公司 | Simulation method for air conditioning system charging amount |
| CN110906506B (en) * | 2019-11-20 | 2021-04-13 | 珠海格力电器股份有限公司 | Refrigerant quantity detection method and device for air conditioner, storage medium and electronic equipment |
| CN111397088B (en) * | 2020-03-30 | 2022-01-25 | 广东美的制冷设备有限公司 | Refrigerant detection method, air conditioner and storage medium |
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Effective date of registration: 20201104 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |