CN109114747B - Air conditioner fluorine deficiency detection method and system and air conditioner - Google Patents
Air conditioner fluorine deficiency detection method and system and air conditioner Download PDFInfo
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- CN109114747B CN109114747B CN201810880236.7A CN201810880236A CN109114747B CN 109114747 B CN109114747 B CN 109114747B CN 201810880236 A CN201810880236 A CN 201810880236A CN 109114747 B CN109114747 B CN 109114747B
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
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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
- F24F11/50—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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention provides a fluorine deficiency detection method for an air conditioner, which judges whether the air conditioner lacks fluorine or not by detecting the air outlet temperature of the air conditioner in real time and comparing the air outlet temperature with a corresponding compensation temperature constant. Compared with the prior art, the invention has the advantages that: the air conditioner fluorine deficiency method can detect the operation effect of the air conditioner in real time only by detecting the air outlet temperature, so that whether the air conditioner is fluorine deficient can be judged more accurately; the detection condition is simple, and the method is suitable for a refrigeration or heating mode and has good universality. The invention also relates to a detection system applying the air conditioner fluorine deficiency detection method, and in addition, the invention also relates to an air conditioner applying the detection system.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a fluorine deficiency detection method and system for an air conditioner and the air conditioner.
Background
The air conditioner is increasingly popular among people as a household appliance for regulating indoor temperature. After the air conditioner lacks fluorine, can bring refrigeration or heat the effect loss to the problem that the indoor temperature drop can not come or rise and can not go appears, and then influence user's experience, simultaneously, the air conditioner lacks fluorine and can lead to compressor motor stator coil and lubricating oil cooling badly, causes the acutely wearing and tearing of compression part and motor bearing, can cause the damage of compressor.
In order to solve the technical problems, a method for detecting the fluorine deficiency of the air conditioner is provided at present, for example, at present, the air conditioner sends out corresponding reminding information of the lack of refrigerant by detecting the air outlet temperature Tc of the air conditioner, comparing the detected air outlet temperature Tc with the set air outlet temperature Tcm of the current operation mode and judging whether the absolute value of the difference between the two temperatures is greater than or equal to a preset value so as to determine whether the refrigerant is leaked at the current situation of the air conditioner, the method realizes the detection of the fluorine deficiency of the air conditioner, but the detection of the fluorine deficiency of the air conditioner needs to set the air outlet temperature, the judgment of the refrigerant deficiency needs to judge according to the set air outlet temperature, and the judgment result is influenced by the set air outlet temperature, so that the detection accuracy is influenced.
Therefore, further improvement of the existing fluorine deficiency detection method and system for the air conditioner is needed.
Disclosure of Invention
In view of the above, the present invention is directed to a method for detecting fluorine deficiency in an air conditioner, which can determine the fluorine deficiency only by detecting the outlet air temperature and the determination is accurate.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a fluorine deficiency detection method for an air conditioner comprises a compressor and a filter screen, and comprises the following steps:
step one, electrifying the air conditioner, and waiting for the compressor to operate for the first time M1After the time, detecting and recording the current air-out temperature T of the air conditionerc1Wherein M is1Starting the compressor for the first time, timing and continuously operating, and executing the step two;
step two, starting timing when the compressor is restarted and detecting continuous operation M in real timeiAir outlet temperature T after timeciWherein i is not less than 2, TciThe air outlet temperature M of the compressor during the ith starting operationiStarting timing for the ith time of starting the compressor and continuously operating, detecting the filth blockage condition of the filter screen, judging the grade of the filth blockage of the filter screen, acquiring a corresponding compensation temperature constant delta T, and executing the third step;
step three, the absolute value delta T of the difference value of the air outlet temperatureci＝|Tc1-TciIf Δ T, comparing with the corresponding compensation temperature constant Δ Tci>Delta T, the air conditioner is lack of fluorine; otherwise, if Δ TciIf the delta T is less than or equal to delta T, the air conditioner does not lack fluorine.
Preferably, the filth blockage grade of the filter screen is divided into three grades, namely a first grade, a second grade and a third grade, wherein the first grade and the second grade are respectivelyThe filth blockage of the second grade and the third grade are serious in sequence, and the corresponding compensation temperature constants are delta T respectively1、ΔT2And Δ T3Wherein, Δ T1＜ΔT2＜ΔT3。
Preferably, the dirty blocking level is determined according to a voltage V applied when a motor of the air conditioner reaches a predetermined rotation speed t, and if the dirty blocking level is a first level, the voltage V to be applied is V when the rotation speed of the motor is t1(ii) a If the filth blockage grade is the second grade, the voltage required to be applied is V when the rotating speed of the motor is t2(ii) a If the filth blockage grade is the third grade, the voltage required to be applied is V when the rotating speed of the motor is t3Wherein V is1>V2>V3。
Preferably, the dirty blocking grade is determined according to a current I required by a motor of the air conditioner when the motor reaches a preset rotating speed t, and if the dirty blocking grade is the first grade, the required current is I when the rotating speed of the motor is t1(ii) a If the filth blockage grade is the second grade, the required current is I when the rotating speed of the motor is t2(ii) a If the filth blockage grade is the third grade, the required current is I when the rotating speed of the motor is t3Wherein, I1>I2>I3。
Preferably, the filth blockage grade is judged according to the layer number of the filter screen, and when the filth blockage grade is a first grade, the layer number of the corresponding filter screen is d1When the filth blockage grade is a second grade, the number of the corresponding filter screen layers is d2When the filth blockage grade is a third grade, the number of the corresponding filter screen layers is d3Wherein d is1＜d2＜d3。
Compared with the prior art, the air conditioner fluorine deficiency detection method has the following advantages:
the air conditioner fluorine deficiency detection method can detect the operation effect of the air conditioner in real time only by detecting the air outlet temperature, so that whether the air conditioner is fluorine deficient can be judged more accurately; the detection condition is simple, the method is suitable for a refrigeration or heating mode, and the universality is good.
Another objective of the present invention is to provide a fluorine deficiency detection system for an air conditioner, which can determine the fluorine deficiency only by detecting the outlet air temperature and the determination is accurate.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a detection system applying the air conditioner fluorine deficiency detection method comprises a first detection module used for detecting the air outlet temperature, a control module electrically connected with the first detection module, a second detection module used for detecting the filth blockage condition of a filter screen, a memory storage module used for storing the air outlet temperature, the air conditioner running time and the compressor starting times, a timing module used for calculating the compressor running time and a display module used for displaying the fluorine deficiency state, wherein the second detection module and the timing module are both connected with the signal input end of the control module, and the signal output end of the control module is connected with the signal input end of the display module.
One of the preferred modes of the memory storage module is as follows: the memory storage module is an external storage chip, and the external storage chip is connected with the signal input end of the control module and can be used for storing the data information received by the control module.
The second preferred mode of the memory storage module is as follows: the memory storage module is a storage piece arranged in a main chip in the control module.
In order to more conveniently detect the temperature at the air outlet of the air conditioner, preferably, the first detection module is a temperature bulb arranged at the air outlet of the air conditioner.
Compared with the prior art, the detection system has the following advantages:
the first detection module of the detection system provided by the invention is convenient to detect the air outlet temperature of the air conditioner, the air outlet temperature is recorded by the memory storage module, and whether the air conditioner lacks fluorine is judged according to the air outlet temperature, so that the fluorine deficiency state of the air conditioner can be displayed by the display module, and the detection system is simpler and more reasonable.
Another objective of the present invention is to provide an air conditioner with the above detection system, wherein the air conditioner is a constant frequency air conditioner.
The detection system has the same advantages as the air conditioner compared with the prior art, and is not described in detail herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a fluorine deficiency detection method for an air conditioner according to an embodiment of the present invention;
FIG. 2 is a table showing the plugging levels of the filter screen and the corresponding compensation temperature constants according to the embodiment of the present invention;
fig. 3 is a block diagram of a detection system according to an embodiment of the present invention.
Description of the reference numerals:
1-a detection system, 10-a control module, 11-a first detection module, 12-a second detection module, 13-a memory storage module, 14-a timing module and 15-a display module.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In addition, the air conditioner mentioned in the embodiment of the present invention mainly refers to a fixed frequency air conditioner with fixed frequency, so that the outlet air temperature is not affected by the frequency of the compressor.
As shown in fig. 1 to 3, a preferred embodiment of the present invention. In this embodiment, as shown in fig. 1, the method for detecting fluorine deficiency in an air conditioner includes the following steps:
step one, electrifying the air conditioner, and waiting for the compressor to operate for the first time M1After the time, detecting and recording the current air-out temperature T of the air conditionerc1Wherein M is1Starting the compressor for the first time, timing and continuously operating, and executing the step two; in the first step, the filth blockage condition of the filter screen is detected, and the filth blockage grade of the filter screen is defaulted to be the firstAnd (4) grading.
Step two, starting timing when the compressor is restarted and detecting continuous operation M in real timeiAir outlet temperature T after timeciWherein i is not less than 2, TciThe outlet air temperature M of the compressor at the i-th starting operationiStarting timing for the ith time of starting the compressor and continuously operating, detecting the filth blockage condition of the filter screen, judging the grade of the filth blockage of the filter screen, acquiring a corresponding compensation temperature constant delta T, and executing the third step;
step three, the absolute value delta T of the difference value of the air outlet temperatureci＝|Tc1-TciIf Δ T, comparing with the corresponding compensation temperature constant Δ Tci>Delta T, the air conditioner is lack of fluorine; otherwise, if Δ TciIf the delta T is less than or equal to delta T, the air conditioner does not lack fluorine.
In this embodiment, as shown in fig. 2, according to the dirty blockage condition of the filter screen, the dirty blockage level of the filter screen is divided into three levels, which are a first level, a second level and a third level, respectively, where the dirty blockage conditions of the first level, the second level and the third level are sequentially serious, and compensation temperature constants corresponding to the first level, the second level and the third level are Δ T constants respectively1、ΔT2And Δ T3Wherein, Δ T1＜ΔT2＜ΔT3. In the present embodiment, the dirty level is determined according to a voltage V that needs to be applied when a motor of the air conditioner reaches a predetermined rotation speed t, and if the dirty level is the first level, the voltage V that needs to be applied when the rotation speed of the motor is t is V1(ii) a If the filth blockage grade is the second grade, the applied voltage is V when the rotating speed of the motor is t2(ii) a If the filth blockage grade is the third grade, the applied voltage is V when the rotating speed of the motor is t3Wherein V is1>V2>V3. That is, when the voltage to be applied is relatively large under the condition of reaching the same rotating speed of the motor, the dirty blockage condition is relatively less serious. The filth blockage grade can be judged according to the current I required by the motor of the air conditioner when the motor reaches the preset rotating speed t, and if the filth blockage grade is the first gradeWhen the rotating speed of the motor is t, the required current is I1(ii) a If the filth blockage grade is the second grade, the required current is I when the rotating speed of the motor is t2(ii) a If the filth blockage grade is the third grade, the required current is I when the rotating speed of the motor is t3Wherein, I1>I2>I3。
The filth blockage grade can be judged according to the layer number of the filter screen, and when the filth blockage grade is a first grade, the layer number of the corresponding filter screen is d1When the filth blockage grade is a second grade, the number of the corresponding filter screen layers is d2When the filth blockage grade is a third grade, the number of the corresponding filter screen layers is d3Wherein d is1＜d2＜d3. For example: if d is11, that is, only one layer of filter screen is needed, the filth blockage grade of the filter screen is the first grade, and if d2If 5, 5 layers of filter screens are needed, the filth blockage grade of the filter screen is the second grade, and if d is the second grade1If 10, 10 layers of filter screens are needed, and the dirty grade of the filter screens is the third grade.
Because the frequency of the compressor of the fixed-frequency air conditioner is fixed, the air outlet temperature is not influenced by the frequency of the compressor, and therefore, the air conditioner fluorine deficiency state can be judged only by detecting the air outlet temperature. In addition, in the present embodiment, M1And MjThe values of the units are different, and the values are different and mainly determined by the units.
As shown in fig. 3, the detection system 1 of this embodiment includes a first detection module 11, a control module 10, a second detection module 12, a memory storage module 13, a timing module 14, and a display module 15, where the first detection module 11 is configured to detect an air outlet temperature of an air conditioner, the control module 10 is electrically connected to the first detection module 11, the second detection module 12 is configured to detect a filth blockage condition of a filter screen, the memory storage module 13 is configured to store the air outlet temperature, an air conditioner operation time, and an air conditioner start frequency, the timing module 14 is configured to calculate an operation time of a compressor, the display module 15 is configured to display a fluorine deficiency state of the air conditioner, in addition, both the second detection module 12 and the timing module 14 are connected to a signal input end of the control module 10, and a signal output end of the control module 10 is connected to a signal input end of the display module 15; the memory storage module 13 is an external storage chip, and the external storage chip is connected with the signal input end of the control module 10 and can be used for storing data information received by the control module 10; the first detection module 11 is a temperature bulb arranged at an air outlet of the air conditioner; the display module 15 is an LED liquid crystal display, the LED liquid crystal display further includes a backlight source, the backlight source is controlled by the control module 10, and the control module 10 controls the backlight source to light, so that the display module 15 can be used to clearly display data information when receiving the data information.
The second detection module 12 can detect the plugging condition of the filter screen and the evaporator of the air conditioner at the same time. The memory storage module 13 may also be a memory component provided in the main chip of the control module 10.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (9)
1. The fluorine deficiency detection method for the air conditioner comprises the following steps:
step one, electrifying the air conditioner, and waiting for the compressor to operate for the first time M1After the time, detecting and recording the current air-out temperature T of the air conditionerc1Wherein, M is1Starting the compressor for the first time, timing and continuously operating, and executing the step two;
step two, after the compressor is restarted and the continuous operation M is detected in real timeiAir outlet temperature T after timeciWherein i is not less than 2, TciThe air outlet temperature M of the compressor during the ith starting operationiStarting timing for the ith time of starting the compressor and continuously operating, detecting the filth blockage condition of the filter screen, judging the grade of the filth blockage of the filter screen, acquiring a corresponding compensation temperature constant delta T, and executing the third step;
step three, getThe absolute value Delta T of the difference value of the appearing outlet air temperatureci＝|Tc1-TciIf Δ T, compare with the corresponding compensated temperature constant Δ Tci>Delta T, the air conditioner is lack of fluorine; otherwise, if Δ TciIf the delta T is less than or equal to delta T, the air conditioner does not lack fluorine.
2. The air conditioner fluorine deficiency detection method according to claim 1, characterized in that: dividing the filth blockage grade of the filter screen into three grades, namely a first grade, a second grade and a third grade, wherein the filth blockage conditions of the first grade, the second grade and the third grade are serious in sequence, and compensating temperature constants corresponding to the three grades are delta T respectively1、ΔT2And Δ T3Wherein, Δ T1＜ΔT2＜ΔT3。
3. The air conditioner fluorine deficiency detection method according to claim 2, characterized in that: the filth blockage grade is judged according to the voltage V which needs to be applied when the motor of the air conditioner reaches a preset rotating speed t, and if the filth blockage grade is the first grade, the voltage which needs to be applied is V when the rotating speed of the motor is t1If the filth blockage grade is the second grade, the voltage required to be applied is V when the rotating speed of the motor is t2If the filth blockage grade is a third grade, the applied voltage is V when the rotating speed of the motor is t3Wherein, V1>V2>V3。
4. The air conditioner fluorine deficiency detection method according to claim 2, characterized in that: the filth blockage grade is judged according to the current I required by the motor of the air conditioner when the motor reaches a preset rotating speed t, and if the filth blockage grade is the first grade, the required current is I when the rotating speed of the motor is t1If the filth blockage grade is the second grade, the required current is I when the rotating speed of the motor is t2If the filth blockage grade is the third grade, the required current is I when the rotating speed of the motor is t3Wherein, I1>I2>I3。
5. The air conditioner fluorine deficiency detection method according to claim 2, characterized in that: the filth blockage grade is judged according to the layer number of the filter screen, and when the filth blockage grade is a first grade, the layer number of the corresponding filter screen is d1When the filth blockage grade is a second grade, the number of the corresponding filter screen layers is d2When the filth blockage grade is a third grade, the number of the corresponding filter screen layers is d3Wherein d is1＜d2＜d3。
6. A detection system applying the air conditioner fluorine deficiency detection method as claimed in any one of the claims 1 to 5, comprising a first detection module for detecting the temperature of the outlet air and a control module electrically connected with the first detection module, wherein: the device is characterized by further comprising a second detection module for detecting the filth blockage condition of the filter screen, a memory storage module for storing the air outlet temperature, the air conditioner running time and the compressor starting times, a timing module for calculating the running time of the compressor and a display module for displaying the fluorine lack state, wherein the second detection module and the timing module are connected with the signal input end of the control module, and the signal output end of the control module is connected with the signal input end of the display module.
7. The detection system of claim 6, wherein: the memory storage module is an external storage chip, and the external storage chip is connected with the signal input end of the control module and can be used for storing the data information received by the control module.
8. The detection system of claim 6, wherein: the memory storage module is a storage piece arranged in a main chip of the control module and used for storing air conditioner operation data.
9. The detection system of claim 6, wherein: the first detection module is a temperature bulb arranged at an air outlet of the air conditioner.
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| CN110594956B (en) * | 2019-09-30 | 2021-07-06 | 宁波奥克斯电气股份有限公司 | Filter screen filth blockage detection method and device and air conditioner |
| CN110645673B (en) * | 2019-10-16 | 2021-03-16 | 南京天加环境科技有限公司 | Refrigerant shortage protection method for fixed-frequency air conditioner |
| CN111121223B (en) * | 2019-12-31 | 2022-03-11 | Tcl空调器(中山)有限公司 | Fluorine-lacking protection method of air conditioner, air conditioner and storage medium |
| CN111692704B (en) * | 2020-07-16 | 2021-08-10 | 湖北威鸿机房工程有限公司 | Air conditioner maintenance fault detection device |
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