CN105042807B - Method and device for detecting running state of variable frequency air conditioner - Google Patents
Method and device for detecting running state of variable frequency air conditioner Download PDFInfo
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- CN105042807B CN105042807B CN201510567273.9A CN201510567273A CN105042807B CN 105042807 B CN105042807 B CN 105042807B CN 201510567273 A CN201510567273 A CN 201510567273A CN 105042807 B CN105042807 B CN 105042807B
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- 238000001514 detection method Methods 0.000 claims description 25
- 238000004378 air conditioning Methods 0.000 claims description 11
- 230000006870 function Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 9
- 238000005057 refrigeration Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
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- 239000003507 refrigerant Substances 0.000 description 3
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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
- 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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Abstract
The invention discloses a method and a device for detecting the running state of a variable frequency air conditioner. Wherein, the method comprises the following steps: detecting the current operating frequency of the variable frequency air conditioner; detecting whether the current running frequency is greater than or equal to a preset frequency in real time within a first preset time; under the condition that the current operating frequency is continuously greater than or equal to the preset frequency within the first preset time, calculating the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature; when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition, determining that the variable frequency air conditioner is in an abnormal operation state; and when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a second preset condition, determining that the variable frequency air conditioner is in a high-capacity output state. The invention solves the technical problem that the running state of the variable frequency air conditioner cannot be determined under the condition that the indoor temperature of the variable frequency air conditioner cannot be adjusted normally.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a method and a device for detecting the running state of a variable frequency air conditioner.
Background
At present, the capacity output of the variable frequency air conditioner product can be adaptively adjusted according to the size of the actual load in the operation process. When the air conditioner output cannot meet the actual load demand, the self running frequency is increased to match the load demand.
In the operation of the inverter air conditioner, when the following conditions exist, even if the operation frequency of the air conditioner is adjusted to the upper limit value, the load requirement can not be met: 1. when the air conditioner is operated, users are not used properly, for example, the users forget to close doors and windows and the like, a closed space is not formed, so that the air conditioner has high operation frequency but cannot meet the requirement of adjusting the room temperature, and energy loss is caused by ineffective work of the air conditioner; 2. the load of the room is too large and exceeds the load capacity of the air conditioner, so that the temperature cannot be continuously adjusted after the air conditioner is adjusted to a certain temperature value when running; 3. the air conditioner is abnormal, so that the temperature adjusting capability is far lower than the normal output level, and the air conditioner cannot normally adjust the room temperature. Aiming at the condition that the air conditioner can not normally adjust the indoor temperature, for a user, the running state of the air conditioner can not be judged, or the indoor temperature can not be normally adjusted by the air conditioner due to any reason. When the actual load of the air conditioner exceeds the load capacity of the air conditioner, a user makes a maintenance request, which causes waste of labor cost.
Aiming at the problem that the running state of the variable frequency air conditioner cannot be determined under the condition that the indoor temperature of the variable frequency air conditioner cannot be adjusted normally, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for detecting the running state of a variable frequency air conditioner, which at least solve the technical problem that the running state of the variable frequency air conditioner cannot be determined under the condition that the indoor temperature of the variable frequency air conditioner cannot be regulated normally.
According to an aspect of an embodiment of the present invention, there is provided a method for detecting an operation state of a variable frequency air conditioner, including: detecting the current operating frequency of the variable frequency air conditioner; detecting whether the current running frequency is greater than or equal to a preset frequency in real time within a first preset time; under the condition that the current operating frequency is continuously greater than or equal to the preset frequency within the first preset time, calculating the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature; when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition, determining that the variable frequency air conditioner is in an abnormal operation state; and when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a second preset condition, determining that the variable frequency air conditioner is in a high-capacity output state.
Further, the preset frequency is an upper limit frequency of the inverter air conditioner, or the preset frequency is a high frequency value when the inverter air conditioner operates.
Further, before detecting whether the current operating frequency is greater than or equal to the preset frequency in real time within a first preset time, the method includes: detecting a first ambient temperature at an initial moment, wherein after determining that the inverter air conditioner is in a high-capacity output state, the method further comprises the following steps: detecting a second ambient temperature at the current moment; judging whether the temperature difference between the first environment temperature and the second environment temperature is within a preset temperature range or not; when the temperature difference between the first environment temperature and the second environment temperature is within a preset temperature range, determining that the variable frequency air conditioner is in a load abnormal state; and when the temperature difference between the first environment temperature and the second environment temperature is not within the preset temperature range, returning to the step of detecting the current operating frequency of the variable frequency air conditioner.
Further, when the current operating frequency of the inverter air conditioner is not continuously greater than or equal to the preset frequency within the first preset time, returning to the step of detecting the current operating frequency of the inverter air conditioner; or when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet a first preset condition, returning to the step of detecting the current operating frequency of the variable frequency air conditioner, or when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet a second preset condition, returning to the step of detecting the current operating frequency of the variable frequency air conditioner.
Further, after the inverter air conditioner is determined to be in an abnormal operation state, an alarm signal for the abnormal operation of the inverter air conditioner is sent out; or after determining that the inverter air conditioner is in the abnormal load state, sending an abnormal load alarm signal of the inverter air conditioner.
According to another aspect of the embodiments of the present invention, there is also provided an apparatus for detecting an operating state of an inverter air conditioner, including: the first detection unit is used for detecting the current operating frequency of the variable frequency air conditioner; the first detection unit is used for detecting whether the current running frequency is greater than or equal to the preset frequency in real time within first preset time; the calculating unit is used for calculating the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature under the condition that the current operating frequency continuously meets the condition that the current operating frequency is greater than or equal to the preset frequency within a first preset time; the first determining unit is used for determining that the variable frequency air conditioner is in an abnormal operation state when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition; and the second determining unit is used for determining that the variable frequency air conditioner is in a high-capacity output state when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a second preset condition.
Further, the preset frequency is an upper limit frequency of the inverter air conditioner, or the preset frequency is a high frequency value when the inverter air conditioner operates.
Further, the apparatus further comprises: a third detection unit for detecting the first ambient temperature at the initial time; the fourth detection unit is used for detecting the second ambient temperature at the current moment; the judging unit is used for judging whether the temperature difference between the first environment temperature and the second environment temperature is within a preset temperature range or not; the third determining unit is used for determining that the variable frequency air conditioner is in a load abnormal state when the temperature difference between the first environment temperature and the second environment temperature is within a preset temperature range; and the first returning unit is used for returning to execute the function of the first detection unit when the temperature difference between the first environment temperature and the second environment temperature is not within the preset temperature range.
The device further comprises a second returning unit, wherein the second returning unit is used for returning to execute the function of the first detecting unit under the condition that the current operating frequency of the variable frequency air conditioner is not continuously greater than or equal to the preset frequency within the first preset time; or, the third returning unit is used for returning to execute the function of the first detecting unit when the temperature difference between the air conditioner temperature and the current environment temperature does not meet the first preset condition; and the fourth returning unit is used for returning to execute the function of the first detection unit when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the second preset condition.
The device further comprises a first alarm unit, a second alarm unit and a control unit, wherein the first alarm unit is used for sending out an alarm signal of abnormal operation of the inverter air conditioner under the condition that the inverter air conditioner is determined to be in the abnormal operation state; or the second alarm unit is used for sending out a load abnormity alarm signal of the inverter air conditioner under the condition that the inverter air conditioner is determined to be in the load abnormity state.
In the embodiment of the invention, the current operating frequency of the variable frequency air conditioner is detected; detecting whether the current running frequency is greater than or equal to a preset frequency in real time within a first preset time; under the condition that the current operating frequency is continuously greater than or equal to the preset frequency within the first preset time, calculating the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature; when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition, determining that the variable frequency air conditioner is in an abnormal operation state; when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a second preset condition, the mode that the variable frequency air conditioner is in the high-capacity output state is determined, and the technical problem that the running state of the variable frequency air conditioner cannot be determined under the condition that the indoor temperature of the variable frequency air conditioner cannot be adjusted normally is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flowchart of a method of detecting an operation state of an inverter air conditioner according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating an alternative method for detecting an abnormal operation state of an inverter air conditioner according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating an alternative method for detecting that an inverter air conditioner is in an abnormal load state according to an embodiment of the present invention; and
fig. 4 is a schematic diagram of an apparatus for detecting an operating state of a variable frequency air conditioner according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example one
According to an embodiment of the present invention, there is provided an embodiment of a method for detecting an operating state of an inverter air conditioner, where it is noted that the steps illustrated in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be executed in an order different from that shown.
Fig. 1 is a flowchart of a method for detecting an operation state of an inverter air conditioner according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
and step S102, detecting the current operating frequency of the variable frequency air conditioner.
And step S104, detecting whether the current running frequency is greater than or equal to the preset frequency in real time within a first preset time.
Specifically, in the above steps S102 to S104, the first preset time may be preset, for example, 30 minutes. The preset frequency can be a high frequency value of the operation of the inverter air conditioner or an upper limit frequency of the operation of the inverter air conditioner.
And step S106, calculating the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature under the condition that the current operation frequency continuously meets the condition that the current operation frequency is greater than or equal to the preset frequency within the first preset time.
Specifically, in step S106, after determining that the inverter air conditioner is operated at a high frequency for a first preset time, calculating a temperature difference between the air conditioner heat exchanger and a current ambient temperature.
It should be noted that, under the condition that the inverter air conditioner normally works, after the inverter air conditioner runs for a period of time at a high frequency, the temperature difference between the temperature of the air conditioner heat exchanger and the current ambient temperature is relatively large. When the temperature difference is smaller, the output capacity of the variable frequency air conditioner is seriously lower, the variable frequency air conditioner is in an abnormal state, and the current temperature regulation capacity of the air conditioner to the room is low.
And S108, when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition, determining that the variable frequency air conditioner is in an abnormal operation state.
Specifically, in the step S108, the first preset condition may be a preset first temperature threshold, and when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature is smaller than the preset first temperature threshold, it is determined that the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature satisfies the first preset condition, and it may be determined that the inverter air conditioner is in an abnormal operation state.
It should be noted that the abnormal operation state may be caused by one or more of the following conditions: 1. the temperature adjusting capability is reduced due to the leakage of the refrigerant of the variable frequency air conditioner, so that the abnormal operation of the air conditioner is caused; 2. the problem of filth blockage in the variable frequency air conditioner causes abnormal operation of the air conditioner; 3. the abnormal condition of the parts of the inverter air conditioner causes the abnormal operation of the air conditioner, for example, the valve parts have the abnormal condition, for example: abnormal operation position of the four-way valve, abnormal operation of the throttle valve, and the like.
And step S110, when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a second preset condition, determining that the variable frequency air conditioner is in a high-capacity output state.
Specifically, in the step S110, the second preset condition may be a preset second temperature threshold, and when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature is greater than the preset second temperature threshold, it is determined that the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature satisfies the second preset condition, and it may be determined that the inverter air conditioner is in the high-capacity output state.
It should be noted that the inverter air conditioner is in a high-power output state, which indicates that the inverter air conditioner is operating normally, and the inverter air conditioner itself is not abnormal. The variable frequency air conditioner is in a high-energy output state, namely the temperature difference between the current ambient temperature and the preset temperature is large, and the variable frequency air conditioner operates at high frequency to adjust the current ambient temperature.
Through the steps S102 to S110, the current operating frequency of the variable frequency air conditioner is detected; detecting whether the current running frequency is greater than or equal to a preset frequency in real time within a first preset time; when the current operating frequency is continuously greater than or equal to the preset frequency within the first preset time, calculating the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature; when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition, determining that the variable frequency air conditioner is in an abnormal operation state; when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a second preset condition, the variable frequency air conditioner is determined to be in a high-capacity output state, and the technical problem that the running state of the variable frequency air conditioner cannot be determined under the condition that the indoor temperature of the variable frequency air conditioner cannot be adjusted normally is solved.
Optionally, the preset frequency is an upper limit frequency of the inverter air conditioner, or the preset frequency is a high frequency value when the inverter air conditioner operates.
Specifically, the preset frequency may be an upper limit frequency when the inverter air conditioner operates, or may be a high frequency value when the inverter air conditioner operates. By the method, the accuracy of the follow-up judgment of the inverter air conditioner in the abnormal operation state or the inverter air conditioner in the high-capacity output state can be ensured.
Optionally, in step S104, before detecting whether the current operating frequency is greater than or equal to the preset frequency in real time within the first preset time, the method may include: step S103, detecting a first ambient temperature at an initial time, wherein, after determining that the inverter air conditioner is in a high-capacity output state at step S110, the method may further include:
in step S112, the second ambient temperature at the current time is detected.
Specifically, a first ambient temperature before a first preset time is detected in step S103, and a second ambient temperature after the air conditioner is operated between the first preset times is detected in step S112. Through the steps S103 and S112, the temperature change of the inverter air conditioner generated in a continuous period of time is detected.
Step S114, determining whether a temperature difference between the first ambient temperature and the second ambient temperature is within a preset temperature range.
Specifically, the difference operation is performed on the first ambient temperature and the second ambient temperature to obtain a temperature difference between the first ambient temperature and the second ambient temperature. The predetermined temperature range may be predetermined, for example-1 ℃ to 1 ℃.
And step S116, when the temperature difference between the first environment temperature and the second environment temperature is within a preset temperature range, determining that the variable frequency air conditioner is in a load abnormal state.
Specifically, in the step S116, when the temperature change of the ambient temperature is small after the inverter air conditioner is in the high-power output state and continuously operated for a period of time, it indicates that the actual load of the inverter air conditioner is too large.
In an optional scenario, in the refrigeration mode, after the inverter air conditioner operates for more than 30 minutes at the upper limit of the operating frequency, the ambient temperature is only reduced by 0.5 ℃, which indicates that the current load is too large, and the refrigeration capacity of the inverter air conditioner cannot meet the current load demand.
The load abnormality may be caused by: 1. the air-conditioning operation environment is a non-closed environment; 2. the actual load of the air conditioner operation environment is not matched with the load of the variable frequency air conditioner; 3. the user sets the temperature too high or too low.
And step S118, when the temperature difference between the first environment temperature and the second environment temperature is not within the preset temperature range, returning to the step S102, and detecting the current operating frequency of the inverter air conditioner.
Specifically, in the step S118, when the variable frequency air conditioner is in the high-capacity output state and the temperature change of the ambient temperature is not within the preset range after continuously operating for a period of time, it is determined that the current load of the variable frequency air conditioner is normal. The inverter air conditioner can be in normal refrigeration operation or heating operation, the step of detecting the current operating frequency of the inverter air conditioner is executed, and the operating state of the inverter air conditioner is continuously judged.
Optionally, in step S104, after detecting whether the current operating frequency is greater than or equal to the preset frequency in real time within the first preset time, the method further includes:
and step S105, when the current operating frequency of the inverter air conditioner is not continuously greater than or equal to the preset frequency within the first preset time, returning to the step of detecting the current operating frequency of the inverter air conditioner.
Specifically, in the step S105, in a case that the current operating frequency of the inverter air conditioner does not continuously satisfy greater than or equal to the preset frequency within the first preset time, it may be determined that the current load of the inverter air conditioner is normal and the inverter air conditioner is operating normally. The inverter air conditioner can be in normal refrigeration operation or heating operation, the step of detecting the current operating frequency of the inverter air conditioner is executed, and the operating state of the inverter air conditioner is continuously judged.
Optionally, after calculating the temperature difference between the air conditioner heat exchanger temperature and the current ambient temperature in step S106, the method further includes:
and step S1091, when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the first preset condition, returning to the step of detecting the current operating frequency of the variable frequency air conditioner.
And step S1093, when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the second preset condition, returning to the step of detecting the current operating frequency of the variable frequency air conditioner.
Specifically, in the steps S1091 to S1093, specifically, when the temperature difference between the air conditioner temperature and the current environment temperature does not satisfy the first preset condition, it may be determined that the inverter air conditioner is operating normally, and the step of detecting the current operating frequency of the inverter air conditioner is executed again, and the inverter air conditioner may operate normally in a cooling operation or a heating operation, and continue to determine the operating state of the inverter air conditioner. Or when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the second preset condition, the current load of the variable frequency air conditioner can be determined to be normal, the step of detecting the current operation frequency of the variable frequency air conditioner is returned to be executed, the variable frequency air conditioner can normally operate in a cooling mode or a heating mode, and the operation state of the variable frequency air conditioner is continuously judged.
Optionally, in step S108, in the case that it is determined that the inverter air conditioner is in the abnormal operation state, the method may further include:
and step S1081, sending an abnormal operation alarm signal of the variable frequency air conditioner.
Specifically, in step S1081, after determining that the inverter air conditioner is in the abnormal operation state, an abnormal operation alarm signal of the inverter air conditioner may be sent to a user, so that the user may repair the inverter air conditioner in time. The problems that the environment temperature cannot be normally adjusted and resources are wasted due to the fact that the variable frequency air conditioner is continuously kept running at a high frequency after the variable frequency air conditioner is in an abnormal running state are solved.
Optionally, in step S110, in the case that it is determined that the inverter air conditioner is in the abnormal load state, the method may further include:
and step S1101, sending out an abnormal load alarm signal of the variable frequency air conditioner.
Specifically, in step S1101, after determining that the inverter air conditioner is in the abnormal load state, an alarm signal indicating that the inverter air conditioner is in the abnormal load state may be sent to a user, so that the user may adjust the indoor temperature or check the operating environment of the air conditioner in time, thereby avoiding the problems of abnormal environmental temperature adjustment and resource waste caused by high-frequency operation of the air conditioner.
It should be noted that the above-mentioned inverter air conditioner abnormal operation alarm signal and inverter air conditioner load abnormal alarm signal may adopt different alarm modes, and the alarm mode may be that the set temperature of the display of the inverter air conditioner is set to flash, or the inverter air conditioner is set to give out a sound prompt, etc.
With reference to the first embodiment, in an optional application scenario, a description is given of a scheme provided in the first embodiment of the present application. Fig. 2 is a flowchart of an alternative method for detecting that an inverter air conditioner is in an abnormal operation state according to an embodiment of the present invention. As shown in fig. 2, the method may include:
step a, performing refrigerating operation or heating operation of the variable frequency air conditioner.
And b, detecting the current operating frequency of the variable frequency air conditioner.
And c, judging whether the current running frequency F is more than or equal to A and the running time T is more than or equal to B. And d, when the current operating frequency F is more than or equal to A and the operating time T is more than or equal to B, executing step F, and when the current operating frequency F is more than or equal to A and the operating time T is not more than or equal to B, executing step F.
It should be noted that, in the step c, a may be a preset frequency, B may be a first preset time, and within the first preset time, whether the current operating frequency is greater than or equal to the preset frequency is detected in real time. The preset frequency a may be an upper limit frequency when the inverter air conditioner is operated, or a high frequency value during the operation of the inverter air conditioner.
Step d, determining △ T ═ TIndoor heat exchanger-TEnvironment(s)|<If C is true, when △ T ═ TIndoor heat exchanger-TEnvironment(s)|<When C is true, step e is performed, when △ T ═ TIndoor heat exchanger-TEnvironment(s)|<And if C is not satisfied, executing the step f.
Specifically, C may be a preset first temperature threshold, and when the temperature difference between the temperature of the air conditioner heat exchanger and the current ambient temperature is smaller than the preset first temperature threshold, it may be determined that the inverter air conditioner is in an abnormal operation state.
It should be noted that, under the condition that the inverter air conditioner normally works, after the inverter air conditioner runs for a period of time at a high frequency, the temperature difference between the temperature of the air conditioner heat exchanger and the current ambient temperature is relatively large. When the temperature difference is smaller, the output capacity of the variable frequency air conditioner is seriously lower, the variable frequency air conditioner is in an abnormal state, and the current temperature regulation capacity of the air conditioner to the room is low.
It should be further noted that the abnormal operation state may be caused by one or more of the following conditions: 1. the temperature adjusting capability is reduced due to the leakage of the refrigerant of the variable frequency air conditioner, so that the abnormal operation of the air conditioner is caused; 2. the problem of filth blockage in the variable frequency air conditioner causes abnormal operation of the air conditioner; 3. the abnormal condition of the parts of the inverter air conditioner causes the abnormal operation of the air conditioner, for example, the valve parts have the abnormal condition, for example: abnormal operation position of the four-way valve, abnormal operation of the throttle valve, and the like.
And e, the variable frequency air conditioner is in an abnormal operation state.
And f, operating according to normal refrigeration or heating.
Through the steps a to f, the current state of the air conditioner can be judged according to the current operating frequency state of the variable frequency air conditioner and the temperature difference value between the temperature of the heat exchanger of the air conditioner and the ambient temperature, whether the air conditioner is in an abnormal state or not and the output of the air conditioner capacity is abnormal is judged according to the detection state, and an abnormal fault is reported under the abnormal condition to remind a user of overhauling.
With reference to the first embodiment, in an optional application scenario, a description is given of a scheme provided in the first embodiment of the present application. Fig. 3 is a flowchart of an alternative method for detecting that an inverter air conditioner is in an abnormal load state according to an embodiment of the present invention. As shown in fig. 3, the method may include:
and step A, performing cooling operation on the frequency conversion air conditioner or performing heating operation on the frequency conversion air conditioner.
B, detecting the current operating frequency of the variable frequency air conditioner and recording the current ambient temperature TEnvironment 1。
And C, judging whether the current running frequency F is more than or equal to A and the running time T is more than or equal to B. And D, when the current operating frequency F is more than or equal to A and the operating time T is more than or equal to B, executing step D, and when the current operating frequency F is more than or equal to A and the operating time T is not more than or equal to B, executing step H.
Specifically, a may be a preset frequency, B may be a first preset time, and within the first preset time, it is detected whether the current operating frequency is greater than or equal to the preset frequency in real time. The preset frequency a may be an upper limit frequency when the inverter air conditioner operates, or a high frequency value during the operation of the inverter air conditioner.
Step D, determine △ T ═ TIndoor heat exchanger-TEnvironment 2|>If D is true, when △ T is | TIndoor heat exchanger-TEnvironment 2|>When D is true, step E is performed, when △ T ═ TIndoor heat exchanger-TEnvironment 2|>And if D is not satisfied, executing the step H.
Specifically, in the step D, D may be a preset second temperature threshold. When the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature is larger than a preset second temperature threshold value, the variable frequency air conditioner can be determined to be in a high-capacity output state.
Step E, detecting the current environment temperature TEnvironment 3。
Step F, determine △ T1 ═ TEnvironment 3-TEnvironment 1|<E if true, when △ T1 ═ TEnvironment 3-TEnvironment 1|<When E is true, step G is performed, when △ T1 ═ TEnvironment 3-TEnvironment 1|<And if E is not satisfied, executing the step H.
Specifically, in the above step F, TEnvironment 1May be the first ambient temperature, T, in this embodimentEnvironment 3May be the second ambient temperature in this embodiment. E may be a preset temperature threshold, for example: 1 ℃ in the presence of a catalyst. And when the change of the environmental temperature is less than E, the actual load of the variable frequency air conditioner is overlarge. When the change of the environmental temperature is larger than or equal to E, the current load of the variable frequency air conditioner can be determined to be normal, and the variable frequency air conditioner can operate normally.
And G, the variable frequency air conditioner is in an abnormal load state, and a user is reminded to check.
The load abnormality may be caused by: 1. the air-conditioning operation environment is a non-closed environment; 2. the actual load of the air conditioner operation environment is not matched with the load of the variable frequency air conditioner; 3. the user sets the temperature too high or too low.
And step H, operating according to normal refrigeration or heating.
Through the steps A to H, the current state of the air conditioner can be judged by checking the current operating frequency state of the air conditioner, the temperature difference value between the temperature of the heat exchanger of the air conditioner and the ambient temperature and the change rate of the ambient temperature, the operation of the air conditioner is adjusted according to the current state of the air conditioner to achieve the purpose of saving energy, and a user is reminded under the condition of abnormal load.
Example two
According to the embodiment of the present invention, an embodiment of a device for detecting an operating state of an inverter air conditioner is further provided, and it should be noted that the device for detecting an operating state of an inverter air conditioner may be used to implement the method for detecting an operating state of an inverter air conditioner according to the embodiment of the present invention, and the method for detecting an operating state of an inverter air conditioner according to the embodiment of the present invention may also be implemented by the device for detecting an operating state of an inverter air conditioner, which is not described again in the embodiment of the method of the present invention.
Fig. 4 is a schematic diagram of an apparatus for detecting an operating state of a variable frequency air conditioner according to an embodiment of the present invention. As shown in fig. 4, the apparatus includes:
and the first detection unit 40 is used for detecting the current operating frequency of the inverter air conditioner.
And the second detection unit 42 is configured to detect whether the current operating frequency is greater than or equal to a preset frequency in real time within a first preset time.
In particular, the first preset time may be preset, for example 30 minutes. The preset frequency can be a high frequency value of the operation of the inverter air conditioner or an upper limit frequency of the operation of the inverter air conditioner.
And the calculating unit 44 is configured to calculate a temperature difference between the temperature of the air conditioner heat exchanger and the current ambient temperature when the current operating frequency continuously meets or exceeds the preset frequency within the first preset time.
Specifically, after the variable frequency air conditioner is determined to be in high-frequency operation for a first preset time, the temperature difference between the air conditioner heat exchanger and the current ambient temperature is calculated.
It should be noted that, under the condition that the inverter air conditioner normally works, after the inverter air conditioner runs for a period of time at a high frequency, the temperature difference between the temperature of the air conditioner heat exchanger and the current ambient temperature is relatively large. When the temperature difference is smaller, the output capacity of the variable frequency air conditioner is seriously lower, the variable frequency air conditioner is in an abnormal state, and the current temperature regulation capacity of the air conditioner to the room is low.
And the first determining unit 46 is used for determining that the variable frequency air conditioner is in an abnormal operation state when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition.
Specifically, the first preset condition may be a preset first temperature threshold, and when the temperature difference between the temperature of the air-conditioning heat exchanger and the current ambient temperature is smaller than the preset first temperature threshold, it is determined that the temperature difference between the temperature of the air-conditioning heat exchanger and the current ambient temperature meets the first preset condition, and it may be determined that the inverter air conditioner is in an abnormal operation state.
It should be noted that the abnormal operation state may be caused by one or more of the following conditions: 1. the temperature adjusting capability is reduced due to the leakage of the refrigerant of the variable frequency air conditioner, so that the abnormal operation of the air conditioner is caused; 2. the problem of filth blockage in the variable frequency air conditioner causes abnormal operation of the air conditioner; 3. the abnormal condition of the parts of the inverter air conditioner causes the abnormal operation of the air conditioner, for example, the valve parts have the abnormal condition, for example: abnormal operation position of the four-way valve, abnormal operation of the throttle valve, and the like.
And a second determining unit 48, configured to determine that the variable frequency air conditioner is in the high-capacity output state when the temperature difference between the air conditioner temperature and the current ambient temperature satisfies a second preset condition.
Specifically, the second preset condition may be a preset second temperature threshold, and when the temperature difference between the temperature of the air-conditioning heat exchanger and the current ambient temperature is greater than the preset second temperature threshold, it is determined that the temperature difference between the temperature of the air-conditioning heat exchanger and the current ambient temperature meets the second preset condition, and it may be determined that the inverter air conditioner is in a high-capacity output state.
It should be noted that the inverter air conditioner is in a high-power output state, which indicates that the inverter air conditioner is operating normally, and the inverter air conditioner itself is not abnormal. The variable frequency air conditioner is in a high-energy output state, namely the temperature difference between the current ambient temperature and the preset temperature is large, and the variable frequency air conditioner operates at high frequency to adjust the current ambient temperature.
The embodiment of the application is used for detecting the current operating frequency of the variable frequency air conditioner through the first detection unit 40; the second detection unit 42 is configured to detect whether the current operating frequency is greater than or equal to a preset frequency in real time within a first preset time; the calculating unit 44 is configured to calculate a temperature difference between the temperature of the air conditioner heat exchanger and the current ambient temperature when the current operating frequency continuously meets or exceeds the preset frequency within the first preset time; the first determining unit 46 is configured to determine that the inverter air conditioner is in an abnormal operation state when the temperature difference between the air conditioner heat exchanger temperature and the current ambient temperature meets a first preset condition; and a second determining unit 48, configured to determine that the inverter air conditioner is in a high-capacity output state when the temperature difference between the air conditioner heat exchanger temperature and the current environment temperature meets a second preset condition.
Alternatively, the preset frequency in the second detection unit 42 may be an upper limit frequency of the inverter air conditioner, or the preset frequency may be a high frequency value when the inverter air conditioner is operated.
Specifically, the preset frequency may be an upper limit frequency when the inverter air conditioner operates, or may be a high frequency value when the inverter air conditioner operates. By the method, the accuracy of the follow-up judgment of the inverter air conditioner in the abnormal operation state or the inverter air conditioner in the high-capacity output state can be ensured.
Optionally, the apparatus may further include:
and the third detection unit is used for detecting the first environment temperature at the initial moment.
And the fourth detection unit is used for detecting the second ambient temperature at the current moment.
Specifically, the temperature change of the inverter air conditioner generated in a continuous period of time is detected through the third detection unit and the fourth detection unit.
And the judging unit is used for judging whether the temperature difference between the first environment temperature and the second environment temperature is within a preset temperature range.
Specifically, the difference operation is performed on the first ambient temperature and the second ambient temperature to obtain a temperature difference between the first ambient temperature and the second ambient temperature. The predetermined temperature range may be predetermined, for example-1 ℃ to 1 ℃.
And the third determining unit is used for determining that the variable frequency air conditioner is in the abnormal load state when the temperature difference between the first environment temperature and the second environment temperature is within the preset temperature range.
Specifically, when the temperature change of the ambient temperature is small after the inverter air conditioner is in a high-power output state and continuously operates for a period of time, the fact that the actual load of the inverter air conditioner is overlarge is indicated.
In an optional scenario, in the refrigeration mode, after the inverter air conditioner operates for more than 30 minutes at the upper limit of the operating frequency, the ambient temperature is only reduced by 0.5 ℃, which indicates that the current load is too large, and the refrigeration capacity of the inverter air conditioner cannot meet the current load demand.
The load abnormality may be caused by: 1. the air-conditioning operation environment is a non-closed environment; 2. the actual load of the air conditioner operation environment is not matched with the load of the variable frequency air conditioner; 3. the user sets the temperature too high or too low.
And a first returning unit for returning to perform the function of the first detecting unit 40 when the temperature difference between the first ambient temperature and the second ambient temperature is not within the preset temperature range.
Specifically, when the variable frequency air conditioner is in a high-energy output state and continuously operates for a period of time, and the temperature change of the ambient temperature is not within a preset range, it is determined that the current load of the variable frequency air conditioner is normal. The inverter air conditioner can perform normal cooling operation or heating operation, and returns to perform the function of the first detection unit 40 to continuously judge the operation state of the inverter air conditioner.
Optionally, the apparatus may further include:
and the second returning unit is used for returning to execute the function of the first detecting unit 40 when the current operating frequency of the inverter air conditioner is not continuously greater than or equal to the preset frequency within the first preset time.
Specifically, under the condition that the current operating frequency of the inverter air conditioner does not continuously meet or exceed the preset frequency within the first preset time, it may be determined that the current load of the inverter air conditioner is normal and the inverter air conditioner operates normally. The inverter air conditioner can perform normal cooling operation or heating operation, and returns to perform the function of the first detection unit 40 to continuously judge the operation state of the inverter air conditioner.
And a third returning unit, configured to return to execute the function of the first detecting unit 40 when the temperature difference between the air conditioner temperature and the current ambient temperature does not satisfy the first preset condition.
And a fourth returning unit, configured to return to execute the function of the first detecting unit 40 when the temperature difference between the air conditioner temperature and the current ambient temperature does not satisfy the second preset condition.
Specifically, when the temperature difference between the temperature of the air conditioner heat exchanger and the current ambient temperature does not satisfy the first preset condition, it may be determined that the inverter air conditioner is operating normally, and the function of the first detection unit 40 is executed in a return manner, so that the inverter air conditioner may operate normally in a cooling operation or a heating operation, and continue to determine the operating state of the inverter air conditioner. Or when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the second preset condition, the current load of the variable frequency air conditioner can be determined to be normal, the function of the first detection unit 40 is returned to be executed, the variable frequency air conditioner can be operated normally in a cooling mode or a heating mode, and the operation state of the variable frequency air conditioner is continuously judged.
Optionally, the apparatus may further include:
and the first alarm unit is used for sending an alarm signal of the abnormal operation of the inverter air conditioner under the condition that the inverter air conditioner is determined to be in the abnormal operation state.
Specifically, after the inverter air conditioner is determined to be in the abnormal operation state, an alarm signal for the abnormal operation of the inverter air conditioner can be sent to a user, so that the user can overhaul the inverter air conditioner in time. The problems that the environment temperature cannot be normally adjusted and resources are wasted due to the fact that the variable frequency air conditioner is continuously kept running at a high frequency after the variable frequency air conditioner is in an abnormal running state are solved.
And the second alarm unit is used for sending out an alarm signal of the load abnormity of the variable frequency air conditioner under the condition that the variable frequency air conditioner is determined to be in the load abnormity state.
Specifically, after the inverter air conditioner is determined to be in the abnormal load state, an alarm signal indicating that the inverter air conditioner is in the abnormal load state can be sent to a user, so that the user can adjust the indoor temperature or check the running environment of the air conditioner in time, and the problems that the environment temperature cannot be adjusted normally and resources are wasted due to high-frequency running of the air conditioner are solved.
It should be noted that the above-mentioned inverter air conditioner abnormal operation alarm signal and inverter air conditioner load abnormal alarm signal may adopt different alarm modes, and the alarm mode may be that the set temperature of the display of the inverter air conditioner is set to flash, or the inverter air conditioner is set to give out a sound prompt, etc.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for detecting the running state of a variable frequency air conditioner is characterized by comprising the following steps:
detecting the current operating frequency of the variable frequency air conditioner;
detecting whether the current running frequency is greater than or equal to a preset frequency in real time within a first preset time;
under the condition that the current operating frequency continuously meets the condition that the current operating frequency is greater than or equal to the preset frequency within the first preset time, calculating the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature;
when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition, determining that the variable frequency air conditioner is in an abnormal operation state;
when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a second preset condition, determining that the variable frequency air conditioner is in a high-capacity output state;
the first preset condition is that the temperature difference between the temperature of the air-conditioning heat exchanger and the current environment temperature is smaller than a preset first temperature threshold value, and the second preset condition is that the temperature difference between the temperature of the air-conditioning heat exchanger and the current environment temperature is larger than a preset second temperature threshold value.
2. The method according to claim 1, wherein the preset frequency is an upper limit frequency of the inverter air conditioner, or the preset frequency is a high frequency value when the inverter air conditioner is operated.
3. The method according to claim 1, wherein before detecting whether the current operating frequency is greater than or equal to the preset frequency in real time within the first preset time, the method comprises: detecting a first ambient temperature at an initial moment, wherein after determining that the inverter air conditioner is in a high-capacity output state, the method further comprises the following steps:
detecting a second ambient temperature at the current moment;
judging whether the temperature difference between the first environment temperature and the second environment temperature is within a preset temperature range or not;
when the temperature difference between the first environment temperature and the second environment temperature is within the preset temperature range, determining that the variable frequency air conditioner is in an abnormal load state;
and when the temperature difference between the first environment temperature and the second environment temperature is not within the preset temperature range, returning to execute the step of detecting the current operating frequency of the variable frequency air conditioner.
4. The method of claim 1,
when the current operating frequency of the inverter air conditioner is not continuously greater than or equal to the preset frequency within the first preset time, returning to the step of detecting the current operating frequency of the inverter air conditioner; or,
when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the first preset condition, returning to the step of detecting the current operating frequency of the variable frequency air conditioner; or,
and when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the second preset condition, returning to the step of detecting the current operating frequency of the variable frequency air conditioner.
5. The method of claim 3,
sending an abnormal operation alarm signal of the inverter air conditioner under the condition that the inverter air conditioner is determined to be in the abnormal operation state; or,
and sending out a load abnormity alarm signal of the variable frequency air conditioner under the condition that the variable frequency air conditioner is determined to be in the load abnormity state.
6. The utility model provides a detect inverter air conditioner running state's device which characterized in that includes:
the first detection unit is used for detecting the current operating frequency of the variable frequency air conditioner;
the second detection unit is used for detecting whether the current running frequency is greater than or equal to a preset frequency in real time within a first preset time;
the calculating unit is used for calculating the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature under the condition that the current operating frequency continuously meets the condition that the current operating frequency is greater than or equal to the preset frequency within the first preset time;
the first determining unit is used for determining that the variable frequency air conditioner is in an abnormal operation state when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a first preset condition;
the second determining unit is used for determining that the variable frequency air conditioner is in a high-capacity output state when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature meets a second preset condition;
the first preset condition is that the temperature difference between the temperature of the air-conditioning heat exchanger and the current environment temperature is smaller than a preset first temperature threshold value, and the second preset condition is that the temperature difference between the temperature of the air-conditioning heat exchanger and the current environment temperature is larger than a preset second temperature threshold value.
7. The apparatus of claim 6, wherein the preset frequency is an upper limit frequency of the inverter air conditioner, or the preset frequency is a high frequency value when the inverter air conditioner is operated.
8. The apparatus of claim 6, further comprising:
a third detection unit for detecting the first ambient temperature at the initial time;
the fourth detection unit is used for detecting the second ambient temperature at the current moment;
the judging unit is used for judging whether the temperature difference between the first environment temperature and the second environment temperature is within a preset temperature range or not;
the third determining unit is used for determining that the variable frequency air conditioner is in a load abnormal state when the temperature difference between the first environment temperature and the second environment temperature is within the preset temperature range;
the first returning unit is used for returning to execute the function of the first detecting unit when the temperature difference between the first environment temperature and the second environment temperature is not within the preset temperature range.
9. The apparatus of claim 6, further comprising:
the second returning unit is used for returning to execute the function of the first detecting unit under the condition that the current operating frequency of the variable frequency air conditioner is not continuously greater than or equal to the preset frequency within the first preset time;
the third returning unit is used for returning to execute the function of the first detecting unit when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the first preset condition;
and the fourth returning unit is used for returning to execute the function of the first detection unit when the temperature difference between the temperature of the air conditioner heat exchanger and the current environment temperature does not meet the second preset condition.
10. The apparatus of claim 8, further comprising:
the first alarm unit is used for sending an alarm signal of abnormal operation of the inverter air conditioner under the condition that the inverter air conditioner is determined to be in the abnormal operation state;
and the second alarm unit is used for sending out an alarm signal of the abnormal load of the inverter air conditioner under the condition that the inverter air conditioner is determined to be in the abnormal load state.
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| CN106871378B (en) * | 2017-03-29 | 2019-12-20 | 广东美的暖通设备有限公司 | Method and device for judging poor heat exchange of air conditioner |
| CN107606693A (en) * | 2017-07-26 | 2018-01-19 | 珠海格力电器股份有限公司 | Air conditioner and control method and device thereof |
| CN109539456A (en) * | 2017-09-21 | 2019-03-29 | 奥克斯空调股份有限公司 | A kind of guard method of air conditioner room unit and device |
| CN108592239B (en) * | 2018-05-16 | 2020-06-16 | 珠海格力电器股份有限公司 | Method and device for adjusting running frequency of air-conditioning compressor |
| CN108954670B (en) * | 2018-09-10 | 2020-06-02 | 奥克斯空调股份有限公司 | Fault pre-judging method and control system of air conditioner and air conditioner |
| CN110608520B (en) * | 2019-09-26 | 2021-07-16 | 广东美的制冷设备有限公司 | Air conditioner, control method thereof and readable storage medium |
| CN114251810B (en) * | 2021-12-13 | 2023-04-25 | 广东美的制冷设备有限公司 | Control method and storage medium of air conditioner, control device and air conditioner |
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