CN113465119A - Fire detection control method for air conditioner - Google Patents
Fire detection control method for air conditioner Download PDFInfo
- Publication number
- CN113465119A CN113465119A CN202110732609.8A CN202110732609A CN113465119A CN 113465119 A CN113465119 A CN 113465119A CN 202110732609 A CN202110732609 A CN 202110732609A CN 113465119 A CN113465119 A CN 113465119A
- Authority
- CN
- China
- Prior art keywords
- set value
- compressor
- fire
- temperature
- current time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and particularly provides a fire detection control method of an air conditioner, aiming at solving the problems that once an existing air conditioner fires, countermeasures cannot be taken timely, and a user may find that serious consequences are prone to occurring in time, so that the safety requirement of the user cannot be met. To this end, the fire detection control method of the present invention includes: in the running process of the air conditioner, acquiring the exhaust temperature of a compressor, the coil temperature of an indoor unit, the coil temperature of an outdoor unit, the running frequency of the compressor and the outdoor environment temperature in real time; judging whether the air conditioner is on fire or not according to the exhaust temperature of the compressor, the coil temperature of the indoor unit, the coil temperature of the outdoor unit, the running frequency of the compressor and the outdoor environment temperature; and under the condition that the air conditioner is judged to be on fire, stopping the compressor after the set time and giving a fire alarm. The invention can inform the user in time when the air conditioner is on fire, thereby improving the safety of the air conditioner and meeting the safety requirement of the user.
Description
Technical Field
The invention relates to the technical field of air conditioners, and particularly provides a fire detection control method of an air conditioner.
Background
The air conditioner is a device capable of adjusting an indoor ambient temperature, and can reduce the indoor ambient temperature by cooling and raise the indoor ambient temperature by heating, thereby improving a user's comfort.
The air conditioner is used as electric equipment, the condition of fire may occur in the using process, once the air conditioner is on fire, because an indoor unit and an outdoor unit of the air conditioner are connected through a connecting pipe, the fire can quickly spread the whole indoor and outdoor units, inestimable loss is caused, personal safety is seriously threatened, if the fire begins to occur on one side of the outdoor unit, a user is more difficult to perceive, and when the user finds that the air conditioner is on fire, the user may not take countermeasures in time, and the fire easily threatens other user families.
In the prior art, research is generally carried out on the aspect of fire prevention of the air conditioner, namely, the fire is prevented by monitoring the operation states of the compressor and the outdoor fan, for example, the operation frequency of the compressor is adjusted at any time, the rotating speed of the outdoor fan is adjusted, and the like.
Therefore, there is a need in the art for a new fire detection control method of an air conditioner to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the technical problems that once the existing air conditioner is on fire, the existing air conditioner cannot take countermeasures in time, and a user may find that the existing air conditioner is not timely and is easy to have serious consequences, so that the safety requirement of the user cannot be met.
The invention provides a fire detection control method of an air conditioner, which comprises the following steps:
in the running process of the air conditioner, acquiring the exhaust temperature of a compressor, the coil temperature of an indoor unit, the coil temperature of an outdoor unit, the running frequency of the compressor and the outdoor environment temperature in real time;
judging whether the air conditioner is on fire or not according to the exhaust temperature of the compressor, the coil temperature of the indoor unit, the coil temperature of the outdoor unit, the running frequency of the compressor and the outdoor environment temperature;
and under the condition that the air conditioner is judged to be on fire, stopping the compressor after the set time and sending a fire alarm.
In a preferred embodiment of the above fire detection control method, the step of "determining whether the air conditioner is on fire based on the discharge temperature of the compressor, the coil temperature of the indoor unit, the coil temperature of the outdoor unit, the operating frequency of the compressor, and the outdoor environment temperature" includes:
judging whether the difference between the exhaust temperature of the compressor before the first preset time and the exhaust temperature of the compressor at the current time is greater than or equal to a first set value, judging whether the difference between the coil temperature of the indoor unit before the first preset time and the coil temperature of the indoor unit at the current time is greater than or equal to a second set value, judging whether the difference between the operating frequency of the compressor before the first preset time and the operating frequency of the compressor at the current time is less than or equal to a third set value, judging whether the absolute value of the difference between the outdoor environment temperature before the first preset time and the outdoor environment temperature at the current time is less than a fourth set value, judging whether the difference between the exhaust temperature of the compressor at the current time and the coil temperature of the indoor unit at the current time is greater than a fifth set value and lasts for the second preset time, judging whether the coil temperature of the indoor unit at the current time is greater than or equal to a sixth set value or whether the coil temperature of the outdoor unit at the current time is greater than or equal to a seventh set value;
and judging whether the air conditioner is on fire or not according to the judgment result.
In a preferred embodiment of the above fire detection control method, "determining whether the air conditioner is on fire according to the determination result" includes:
if the difference between the exhaust temperature of the compressor before the first preset time and the exhaust temperature of the compressor at the current time is judged to be greater than or equal to the first set value, the difference between the coil temperature of the indoor unit before the first preset time and the coil temperature of the indoor unit at the current time is judged to be greater than or equal to the second set value, the difference between the operating frequency of the compressor before the first preset time and the operating frequency of the compressor at the current time is judged to be less than or equal to the third set value, the absolute value of the difference between the outdoor environment temperature before the first preset time and the outdoor environment temperature at the current time is judged to be less than the fourth set value, the difference between the exhaust temperature of the compressor at the current time and the coil temperature of the indoor unit at the current time is judged to be greater than the fifth set value and continues for the second preset time, and judging that the coil temperature of the indoor unit at the current time is greater than or equal to the sixth set value or the coil temperature of the outdoor unit at the current time is greater than or equal to the seventh set value, and judging that the air conditioner is on fire.
In a preferred embodiment of the fire detection control method, if it is determined that a difference between an exhaust temperature of the compressor before a first preset time and an exhaust temperature of the compressor at a current time is greater than or equal to the first set value, a difference between a coil temperature of the indoor unit before the first preset time and a coil temperature of the indoor unit at the current time is greater than or equal to the second set value, a difference between an operating frequency of the compressor before the first preset time and an operating frequency of the compressor at the current time is less than or equal to the third set value, an absolute value of a difference between an outdoor environment temperature of the compressor before the first preset time and an outdoor environment temperature of the compressor at the current time is less than the fourth set value, a difference between the exhaust temperature of the compressor at the current time and the coil temperature of the indoor unit at the current time is greater than the fifth set value, and the second preset time is continued And if it is determined that the coil temperature of the indoor unit at the current time is greater than or equal to the sixth set value or the coil temperature of the outdoor unit at the current time is greater than or equal to the seventh set value, it is determined that the air conditioner is on fire, including:
if the difference between the exhaust temperature of the compressor before the first preset time and the exhaust temperature of the compressor at the current time is judged to be greater than or equal to the first set value, the difference between the coil temperature of the indoor unit before the first preset time and the coil temperature of the indoor unit at the current time is judged to be greater than or equal to the second set value, the difference between the operating frequency of the compressor before the first preset time and the operating frequency of the compressor at the current time is judged to be less than or equal to the third set value, the absolute value of the difference between the outdoor environment temperature before the first preset time and the outdoor environment temperature at the current time is judged to be less than the fourth set value, the difference between the exhaust temperature of the compressor at the current time and the coil temperature of the indoor unit at the current time is judged to be greater than the fifth set value and the second preset time is continued within a third preset time, and judging that the coil temperature of the indoor unit at the current time is greater than or equal to the sixth set value or the coil temperature of the outdoor unit at the current time is greater than or equal to the seventh set value, and judging that the air conditioner is on fire.
In a preferred embodiment of the above fire detection control method, when it is determined that the air conditioner is on fire, the fire detection control method further includes:
further determining the fire position of the air conditioner.
In a preferred embodiment of the above fire detection control method, the step of "determining a fire location of the air conditioner" specifically includes:
if the coil temperature of the indoor unit at the current time is greater than or equal to the sixth set value, the indoor unit fires;
and if the coil temperature of the outdoor unit at the current time is greater than or equal to the seventh set value, the outdoor unit is on fire.
In the preferred technical solution of the above fire detection control method, the first preset time and the second preset time are both 5 minutes, the first set value is 10 degrees celsius, the second set value is-5 degrees celsius, the third set value is 5HZ, the fourth set value is 2 degrees celsius, the fifth set value is 58 degrees celsius, and the sixth set value and the seventh set value are both 100 degrees celsius.
In a preferred embodiment of the fire detection control method, the third preset time is 1 minute.
In a preferred embodiment of the fire detection control method, the step of "issuing a fire indication" includes:
and the indoor unit buzzes and gives an alarm.
In the preferred technical solution of the above fire detection control method, the step of communicating the controller of the air conditioner with the user terminal and "issuing a fire prompt" includes:
and sending prompt information to the user terminal.
Under the condition of adopting the technical scheme, the invention can accurately judge whether the air conditioner is on fire or not through the real-time acquired exhaust temperature of the compressor, the coil temperature of the indoor unit, the coil temperature of the outdoor unit, the running frequency of the compressor and the outdoor environment temperature, can not generate misjudgment, can stop the compressor under a stable state after the fire is on fire so as to avoid the situation that the air conditioner is in an unstable state and aggravates the fire due to immediate stop, can prompt a user in time while the compressor stops, is convenient for the user to know the on fire of the air conditioner in time, so that the user can take corresponding measures in time, such as timely informing firefighters or escaping and the like, and avoid the situation that the user does not know the on fire in time and does not take the corresponding measures in time, and can also provide enough time for escaping for the user under the serious fire situation so as to improve the safety of the air conditioner, the safety requirement of the user is met, and the user experience is improved.
Furthermore, except for adopting the parameters of the air conditioner to judge, namely the previous exhaust temperature and the current exhaust temperature of the compressor, the previous coil temperature and the current coil temperature of the indoor unit, the previous operation frequency and the current operation frequency of the compressor, the current exhaust temperature of the compressor and the current coil temperature of the indoor unit, besides the current coil temperature of the indoor unit and the current coil temperature of the outdoor unit, the parameters of the non-air conditioner are also adopted, namely the previous outdoor environment temperature and the current outdoor environment temperature, thereby eliminating the influence on the air conditioner caused by the change of the outdoor environment temperature, reducing the probability of misjudgment due to non-air conditioner parameters, improving the accuracy of judging the ignition of the air conditioner, the compressor can adopt a coping strategy to remind a user at the same time under the condition that the air conditioner is on fire, and the user experience is further improved.
Further, through making clear the position that the air conditioner was on fire, can be convenient for the user adopt different reply processing tactics, for example when the outdoor side of air conditioner was on fire but the indoor side was not on fire, the user can in time inform the fire fighter in the room or adopt corresponding solution by oneself, when the indoor side of air conditioner was on fire, the user can flee earlier, avoids influencing self life safety.
Furthermore, the user can be reminded of emergently evacuating by the buzzing alarm of the indoor unit, and the influence on the life safety of the user is avoided.
Further, the situation that the user cannot know timely due to the fact that the user is not at home but the air conditioner is on fire can be avoided by sending the prompt information to the user terminal, the user can be conveniently and timely informed to fire fighters and other family members to take countermeasures when the air conditioner is on fire when the user is not at home, and user experience is further improved.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a flowchart of a fire detection control method of an air conditioner of the present invention;
fig. 2 is a flowchart of an embodiment of a fire detection control method of an air conditioner according to the present invention.
Detailed Description
It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
It should be noted that in the description of the present invention, although the steps of the control method of the present invention are described in a specific order in the present application, the order is not limited, and those skilled in the art can perform the steps in a different order without departing from the basic principle of the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," "sixth," and "seventh" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention provides an ignition detection control method of an air conditioner, aiming at accurately judging whether the air conditioner is on fire or not, and informing a user in time when the air conditioner is on fire, so that the safety of the air conditioner is improved, the safety requirement of the user is met, and the user experience is improved.
It should be noted that, aiming at the fire condition of the air conditioner, the inventor has made an intensive study, when the influence of the fire of the air conditioner is explored, the advantages and disadvantages of the parameters of the air conditioner are compared, and the exhaust temperature of the compressor, the coil temperature of the indoor unit, the coil temperature of the outdoor unit and the operation frequency of the compressor are selected from a plurality of air conditioner parameters to be used as the relevant parameters of the air conditioner for comprehensively judging the fire of the air conditioner. In other words, when the influence of the fire of the air conditioner is explored, the inventor finds that the fire has great influence on the compressor, the coil of the outdoor unit and the coil of the indoor unit, and is more beneficial to combined judgment, and for the fan rotating speed of the indoor unit and the fan rotating speed of the outdoor unit, the influence of the dirt degree on the fan, frosting or condensed water and the like can influence the accuracy of the judgment of the fire of the air conditioner on the contrary, and the accurate judgment of the fire of the air conditioner is not beneficial. Meanwhile, besides the parameters of the air conditioner, the outdoor environment temperature is selected as the parameters of the non-air conditioner, so that the influence of the outdoor environment temperature is eliminated, and the influence of the temperature change of the outdoor environment on the judgment of the fire ignition accuracy is avoided.
To this end, as shown in fig. 1, the fire detection control method of the present invention includes:
in the running process of the air conditioner, acquiring the exhaust temperature TD of a compressor, the coil temperature TM of an indoor unit, the coil temperature TC of an outdoor unit, the running frequency F of the compressor and the outdoor environment temperature TAI in real time;
judging whether the air conditioner is on fire or not according to the exhaust temperature TD of the compressor, the coil temperature TM of the indoor unit, the coil temperature TC of the outdoor unit, the running frequency F of the compressor and the outdoor environment temperature TAI;
and under the condition that the air conditioner is judged to be on fire, stopping the compressor after the set time and giving a fire alarm.
In the above, the setting time preferably ranges from 5 to 15 seconds, and more preferably ranges from 10 seconds, and those skilled in the art can flexibly set the setting time in practical applications. Through repeated research of the inventor, the inventor finds that when the air conditioner is on fire, unless the compressor is forced to stop due to the fire, if the air conditioner actively and immediately controls the compressor to stop under the condition that the fire just happens to the air conditioner, the whole air conditioner is in a serious unstable state, if the fire happens due to the running problem of the air conditioner, the fire is aggravated at this time, the invention stops the air conditioner in a relative stable state by stopping the compressor after the set time when the fire happens to the air conditioner, so that the fire is aggravated, and the stop mode of the compressor preferably adopts uniform speed reduction stop or stepped speed reduction stop, for example, the stop is completed within 10 to 15 seconds, which is higher than the stop speed under the normal running state of the air conditioner.
Preferably, the step of "determining whether the air conditioner is on fire according to the discharge temperature TD of the compressor, the coil temperature TM of the indoor unit, the coil temperature TC of the outdoor unit, the operating frequency F of the compressor, and the outdoor environment temperature TAI" includes:
judging whether the difference delta TD between the exhaust temperature TD1 before the first preset time T1 of the compressor and the exhaust temperature TD2 at the current time of the compressor is greater than or equal to a first set value T1, judging whether the difference delta TM between the coil temperature TM1 before the first preset time T1 of the indoor unit and the coil temperature TM2 at the current time of the indoor unit is greater than or equal to a second set value T2, judging whether the difference delta F between the operating frequency F1 before the first preset time T1 of the compressor and the operating frequency F2 at the current time of the compressor is less than or equal to a third set value F3, judging whether the absolute value delta TAI of the difference between the outdoor environment temperature TAI1 before the first preset time T1 and the outdoor environment temperature TAI2 at the current time of the compressor is less than a fourth set value T4, judging whether the difference TD2-TM 5 between the exhaust temperature TD2 at the current time of the compressor and the coil temperature TM2 at the current time of the indoor unit is greater than a fifth set value T57324 and the second set value T2, judging whether the coil temperature TM2 of the indoor unit at the current time is greater than or equal to a sixth set value T6 or whether the coil temperature TC2 of the outdoor unit at the current time is greater than or equal to a seventh set value T7;
and judging whether the air conditioner is on fire according to the judgment result.
It should be noted that, among the above-mentioned parameters of the air conditioner itself (i.e. the discharge temperature TD of the compressor, the coil temperature TM of the indoor unit, the coil temperature TC of the outdoor unit, and the operating frequency F of the compressor), in addition to calculating the difference between the discharge temperature and the operating frequency of the compressor at the previous time and the current time, and directly comparing the coil temperature of the indoor unit and the coil temperature of the outdoor unit with the sixth setting value and the seventh setting value, the comparison and determination between the difference TD2-TM2 between the discharge temperature TD2 at the current time of the compressor and the coil temperature TM2 at the current time of the indoor unit and the fifth setting value T5 are also designed, so as to avoid the misjudgment caused by the inaccurate detection of the coil temperature sensor of the indoor unit and the coil temperature sensor of the outdoor unit, that in an extreme case, the abnormality of the compressor may occur to cause the discharge temperature and the operating frequency of the compressor at the previous time and the current time The invention can eliminate the misjudgment of the air conditioner fire to the maximum extent and ensure the detection accuracy of the air conditioner fire through the logic design on the basis that the detection abnormality is possibly caused by the coil temperature of the indoor unit and the coil temperature of the outdoor unit due to the self reason, but the probability of meeting the comparison condition of TD2-TM2 and T5 is basically zero.
In a specific case, if it is determined that a difference Δ TD between an exhaust temperature TD1 before a first preset time T1 of the compressor and an exhaust temperature TD2 at a current time of the compressor is greater than or equal to a first set value T1, and a difference Δ TM between a coil temperature TM1 before a first preset time T1 of the indoor unit and a coil temperature TM2 at a current time of the indoor unit is greater than or equal to a second set value T2, and a difference Δ F between an operating frequency F1 before a first preset time T1 of the compressor and an operating frequency F2 at a current time of the compressor is less than or equal to a third set value F3, and an absolute value Δ TAI of a difference between an outdoor ambient temperature TAI1 before a first preset time T1 and an outdoor ambient temperature TAI2 at a current time is less than a fourth set value T4, and a difference Δ TD2-TM 585 between an exhaust temperature TD2 at a current time of the compressor and an indoor unit is greater than a fifth set value T2 and 5857324, and judging that the coil temperature TM2 of the indoor unit at the current time is greater than or equal to a sixth set value T6 or the coil temperature TC2 of the outdoor unit at the current time is greater than or equal to a seventh set value T7, judging that the air conditioner is on fire.
In addition to the requirement that the time duration of the time duration T2 is simultaneously satisfied when the time duration of the time duration Δ TD ≧ T1, the time duration Δ TM ≧ T2, the time duration Δ F ≦ F3, the time duration Δ TAI < T4, and the time duration TD2-TM2 > T5, the time duration TM2 ≧ T6 and the time duration TC2 ≧ T7 are only one of the requirements, and the air conditioner is determined to be on fire. When the air conditioner is on fire, whether the indoor unit is on fire or the outdoor unit is on fire can be judged according to the comparison results of TM2 and T6 and TC2 and T7, and the fire position of the air conditioner is further determined. If the coil temperature TM2 of the indoor unit at the current time is greater than or equal to the sixth set value T6, the indoor unit is judged to be on fire, if the coil temperature TC2 of the outdoor unit at the current time is greater than or equal to the seventh set value T7, the outdoor unit is judged to be on fire, and if the two conditions are simultaneously met, the indoor unit and the outdoor unit are both judged to be on fire.
More preferably, a time limit is added to the conditions of the delta TD ≧ T1, the delta TM ≧ T2, the delta F ≦ F3, the delta TAI < T4, the TD2-TM2 > T5, and the TM2 ≧ T6 or the TC2 ≧ T7, that is, the condition is satisfied within the time limit, and the air conditioner is determined to be on fire, so that the detection accuracy is further improved. That is, if it is determined that the difference Δ TD between the discharge temperature TD1 before the first preset time T1 of the compressor and the discharge temperature TD2 at the current time of the compressor is greater than or equal to the first set value T1, and the difference Δ TM between the coil temperature TM1 before the first preset time T1 of the indoor unit and the coil temperature TM2 at the current time of the indoor unit is greater than or equal to the second set value T2, and the difference Δ F between the operating frequency F1 before the first preset time T1 of the compressor and the operating frequency F2 at the current time of the compressor is determined to be less than or equal to the third set value F3, and the absolute value Δ TAI of the difference between the outdoor ambient temperature TAI1 before the first preset time T1 and the outdoor ambient temperature TAI2 at the current time is determined to be less than the fourth set value F3, and the difference Δ TAI 6342 between the discharge temperature TD2 at the current time of the compressor and the discharge temperature TD2 at the current time of the indoor unit is determined to be greater than the fifth set value T599 and the coil temperature TD 599, and the coil temperature TM2 of the indoor unit at the current time is judged to be greater than or equal to the sixth set value T6 or the coil temperature TC2 of the outdoor unit at the current time is judged to be greater than or equal to the seventh set value T7, and then the air conditioner is judged to be on fire.
Those skilled in the art can flexibly set specific values of the first preset time T1, the second preset time T2, the third preset time T3, the first set value T1, the second set value T2, the third set value F3, the fourth set value T4, the fifth set value T5, the sixth set value T6 and the seventh set value T7 in practical application, for example: the first preset time T1 and the second preset time T2 are both 5 minutes, the third preset time T3 is 1 minute, the first set value T1 is 10 degrees celsius, the second set value T2 is-5 degrees celsius, the third set value F3 is 5HZ, the fourth set value T4 is 2 degrees celsius, the fifth set value T5 is 58 degrees celsius, and the sixth set value T6 and the seventh set value T7 are both 100 degrees celsius.
When the third preset time T3 is less than the second preset time T2, it is indicated that TD2-TM2 > T5 needs to satisfy the condition that the second preset time T2 continues for the determination time of the third preset time T3, and once the condition of the second preset time T2 is not satisfied, the air conditioner is not determined to be on fire, and if TD2-TM2 > T5 is just satisfied and the second preset time T2 continues, the air conditioner is not determined to be on fire if one of Δ TD ≧ T1, Δ TM ≧ T2, Δ F ≦ F3, and Δ TAI < T4 is not satisfied, or TM2 ≧ T6 and TC2 ≧t7 are not satisfied.
Further, in the above, if Δ TD < T1, Δ TM < T2, Δ F > F3, Δ TAI ≧ T4, TD2-TM2 ≦ T5, TD2-TM2 > T5 but does not continue for the second preset time T2, or TM2 < T6 and TC2 < T7, it is determined that the air conditioner is not on fire.
Preferably, in the present invention, the step of "issuing a fire alarm" includes: the indoor unit is buzzed to alarm. Specifically, a buzzer communicated with a controller of the air conditioner may be disposed on a casing of the indoor unit, and when the air conditioner is on fire, the buzzer is controlled by the controller to buzz to prompt a user indoors.
Preferably, in the present invention, the controller of the air conditioner communicates with a user terminal (e.g., a mobile phone, a tablet, a smart band/watch, etc.), "issuing a fire alarm" includes: and sending prompt information to the user terminal. Specifically, a short message or an automatic phone call pushing prompt may be sent to the user terminal, a voice prompt may be sent to the user terminal, or an APP of the user terminal may pop up a prompt message automatically.
In the above, it is preferable that the indoor unit buzzing alarm and the sending of the prompt message to the user terminal are both performed, the indoor user can be prompted in time by the indoor unit buzzing alarm, and the situation that the air conditioner is on fire and cannot respond in time when the user is not at home can be avoided by sending the prompt message to the user terminal.
The solution according to the invention is elucidated below with reference to a specific embodiment.
As shown in fig. 2, in the operation process of the air conditioner, the discharge temperature TD of the compressor, the coil temperature TM of the indoor unit, the coil temperature TC of the outdoor unit, the operation frequency F of the compressor, and the outdoor environment temperature TAI are obtained in real time;
judging whether the difference delta TD between the compressor exhaust temperature before 5 minutes and the current exhaust temperature is more than or equal to 10 ℃ or not, whether the difference delta TM between the indoor unit coil temperature before 5 minutes and the current coil temperature is more than or equal to-5 ℃ or not, whether the difference delta F between the compressor operation frequency before 5 minutes and the current operation frequency is less than or equal to 5HZ or not, whether the absolute value delta TAI of the difference between the outdoor environment temperature before 5 minutes and the current outdoor environment temperature is less than 2 ℃ (eliminating the influence of the outdoor environment temperature on ignition judgment), whether the difference TD2-TM2 between the current compressor exhaust temperature and the coil temperature of the indoor unit is more than 58 ℃ and lasts for 5 minutes, and whether TM2 is more than or equal to 100 ℃ or whether TC2 is more than or equal to 100 ℃ or not within 1 minute;
if the difference delta TD between the compressor exhaust temperature before 5 minutes and the current exhaust temperature is more than or equal to 10 ℃, the difference delta TM between the indoor unit coil temperature before 5 minutes and the current coil temperature is more than or equal to-5 ℃, the difference delta F between the compressor operation frequency before 5 minutes and the current operation frequency is less than or equal to 5HZ, the absolute value delta TAI between the outdoor environment temperature before 5 minutes and the current outdoor environment temperature is less than or equal to 2 ℃, the difference TD2-TM2 between the current compressor exhaust temperature and the indoor unit coil temperature is more than or equal to 58 ℃ and lasts for 5 minutes, and the TM2 is more than or equal to 100 ℃ or the TC2 is more than or equal to 100 ℃, if the air conditioner is not on fire, after the air conditioner is judged to be on fire, the compressor is stopped, the indoor unit is warned, and warning information is sent to a user after 10 s.
In the invention, the sensor for detecting the outdoor environment temperature needs to ensure that the setting position of the sensor is not influenced when the air conditioner is on fire, for example, the outdoor environment temperature sensor can be arranged far away from the air conditioner, at the moment, only the outdoor environment temperature sensor needs to be communicated with the controller of the air conditioner, if the outdoor environment temperature sensor is arranged on the shell of the outdoor unit, a fireproof plate can be arranged on the shell to prevent fire from flowing to the position where the outdoor environment temperature sensor is arranged, so as to avoid influencing the detection accuracy of the outdoor environment temperature sensor, in addition, the outdoor environment temperature is preferably obtained through weather forecast, thereby avoiding the influence on the detection of the outdoor environment temperature when the air conditioner is on fire, therefore, a communication module with a fireproof protection structure can be arranged on the air conditioner, and the communication interaction between the controller and the cloud server is realized through the communication module, thereby downloading weather forecast data.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A fire detection control method of an air conditioner is characterized by comprising the following steps:
in the running process of the air conditioner, acquiring the exhaust temperature of a compressor, the coil temperature of an indoor unit, the coil temperature of an outdoor unit, the running frequency of the compressor and the outdoor environment temperature in real time;
judging whether the air conditioner is on fire or not according to the exhaust temperature of the compressor, the coil temperature of the indoor unit, the coil temperature of the outdoor unit, the running frequency of the compressor and the outdoor environment temperature;
and under the condition that the air conditioner is judged to be on fire, stopping the compressor after the set time and sending a fire alarm.
2. The fire detection control method according to claim 1, wherein the step of determining whether the air conditioner is on fire based on the discharge temperature of the compressor, the coil temperature of the indoor unit, the coil temperature of the outdoor unit, the operating frequency of the compressor, and the outdoor environment temperature specifically comprises:
judging whether the difference between the exhaust temperature of the compressor before the first preset time and the exhaust temperature of the compressor at the current time is greater than or equal to a first set value, judging whether the difference between the coil temperature of the indoor unit before the first preset time and the coil temperature of the indoor unit at the current time is greater than or equal to a second set value, judging whether the difference between the operating frequency of the compressor before the first preset time and the operating frequency of the compressor at the current time is less than or equal to a third set value, judging whether the absolute value of the difference between the outdoor environment temperature before the first preset time and the outdoor environment temperature at the current time is less than a fourth set value, judging whether the difference between the exhaust temperature of the compressor at the current time and the coil temperature of the indoor unit at the current time is greater than a fifth set value and lasts for the second preset time, judging whether the coil temperature of the indoor unit at the current time is greater than or equal to a sixth set value or whether the coil temperature of the outdoor unit at the current time is greater than or equal to a seventh set value;
and judging whether the air conditioner is on fire or not according to the judgment result.
3. The fire detection control method according to claim 2, wherein the step of determining whether the air conditioner fires according to the determination result specifically includes:
if the difference between the exhaust temperature of the compressor before the first preset time and the exhaust temperature of the compressor at the current time is judged to be greater than or equal to the first set value, the difference between the coil temperature of the indoor unit before the first preset time and the coil temperature of the indoor unit at the current time is judged to be greater than or equal to the second set value, the difference between the operating frequency of the compressor before the first preset time and the operating frequency of the compressor at the current time is judged to be less than or equal to the third set value, the absolute value of the difference between the outdoor environment temperature before the first preset time and the outdoor environment temperature at the current time is judged to be less than the fourth set value, the difference between the exhaust temperature of the compressor at the current time and the coil temperature of the indoor unit at the current time is judged to be greater than the fifth set value and continues for the second preset time, and judging that the coil temperature of the indoor unit at the current time is greater than or equal to the sixth set value or the coil temperature of the outdoor unit at the current time is greater than or equal to the seventh set value, and judging that the air conditioner is on fire.
4. The fire detection control method according to claim 3, wherein if it is determined that the difference between the discharge temperature of the compressor before the first preset time and the discharge temperature of the compressor at the current time is greater than or equal to the first set value, and it is determined that the difference between the coil temperature of the indoor unit before the first preset time and the coil temperature of the indoor unit at the current time is greater than or equal to the second set value, and it is determined that the difference between the operation frequency of the compressor before the first preset time and the operation frequency of the compressor at the current time is less than or equal to the third set value, and it is determined that the absolute value of the difference between the outdoor environment temperature before the first preset time and the outdoor environment temperature at the current time is less than the fourth set value, and it is determined that the difference between the discharge temperature of the compressor at the current time and the coil temperature of the indoor unit at the current time is greater than the fifth set value, and it is continued And if the second preset time and the coil temperature at the current time of the indoor unit is greater than or equal to the sixth set value or the coil temperature at the current time of the outdoor unit is greater than or equal to the seventh set value, determining that the air conditioner is on fire, wherein the step of determining that the air conditioner is on fire comprises the following steps:
if the difference between the exhaust temperature of the compressor before the first preset time and the exhaust temperature of the compressor at the current time is judged to be greater than or equal to the first set value, the difference between the coil temperature of the indoor unit before the first preset time and the coil temperature of the indoor unit at the current time is judged to be greater than or equal to the second set value, the difference between the operating frequency of the compressor before the first preset time and the operating frequency of the compressor at the current time is judged to be less than or equal to the third set value, the absolute value of the difference between the outdoor environment temperature before the first preset time and the outdoor environment temperature at the current time is judged to be less than the fourth set value, the difference between the exhaust temperature of the compressor at the current time and the coil temperature of the indoor unit at the current time is judged to be greater than the fifth set value and the second preset time is continued within a third preset time, and judging that the coil temperature of the indoor unit at the current time is greater than or equal to the sixth set value or the coil temperature of the outdoor unit at the current time is greater than or equal to the seventh set value, and judging that the air conditioner is on fire.
5. The fire detection control method according to any one of claims 2 to 4, wherein in the case where it is determined that the air conditioner is on fire, the fire detection control method further includes:
further determining the fire position of the air conditioner.
6. The fire detection control method according to claim 5, wherein the step of "determining the fire location of the air conditioner" specifically includes:
if the coil temperature of the indoor unit at the current time is greater than or equal to the sixth set value, the indoor unit fires;
and if the coil temperature of the outdoor unit at the current time is greater than or equal to the seventh set value, the outdoor unit is on fire.
7. The fire detection control method according to any one of claims 2 to 4, wherein the first preset time and the second preset time are both 5 minutes, the first set value is 10 degrees Celsius, the second set value is-5 degrees Celsius, the third set value is 5HZ, the fourth set value is 2 degrees Celsius, the fifth set value is 58 degrees Celsius, and the sixth set value and the seventh set value are both 100 degrees Celsius.
8. The fire detection control method according to claim 4, wherein the third preset time is 1 minute.
9. The fire detection control method according to any one of claims 2 to 4, wherein the step of "issuing a fire indication" includes:
and the indoor unit buzzes and gives an alarm.
10. The fire detection control method according to any one of claims 2 to 4, wherein the controller of the air conditioner communicates with a user terminal, and the step of "issuing a fire notification" includes:
and sending prompt information to the user terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732609.8A CN113465119B (en) | 2021-06-30 | 2021-06-30 | Fire detection control method for air conditioner |
| PCT/CN2022/101906 WO2023274228A1 (en) | 2021-06-30 | 2022-06-28 | Fire detection and control method for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732609.8A CN113465119B (en) | 2021-06-30 | 2021-06-30 | Fire detection control method for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113465119A true CN113465119A (en) | 2021-10-01 |
| CN113465119B CN113465119B (en) | 2023-05-26 |
Family
ID=77874071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110732609.8A Active CN113465119B (en) | 2021-06-30 | 2021-06-30 | Fire detection control method for air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113465119B (en) |
| WO (1) | WO2023274228A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183899A (en) * | 2021-12-09 | 2022-03-15 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium, processor and air conditioner |
| WO2023274228A1 (en) * | 2021-06-30 | 2023-01-05 | 青岛海尔空调电子有限公司 | Fire detection and control method for air conditioner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2888817B1 (en) * | 1998-02-26 | 1999-05-10 | 松下電器産業株式会社 | Refrigerant recovery control method in air conditioning system |
| JP2009257611A (en) * | 2008-04-11 | 2009-11-05 | Daikin Ind Ltd | Air conditioner |
| CN104075420A (en) * | 2014-07-02 | 2014-10-01 | 珠海格力电器股份有限公司 | Flammable refrigerant air-conditioner fire protection system and application method thereof as well as air-conditioner |
| JP2017166737A (en) * | 2016-03-15 | 2017-09-21 | 株式会社ミナミテクノ | Fire inside exhaust duct detection system and alarm device |
| CN109282419A (en) * | 2018-09-12 | 2019-01-29 | 珠海格力电器股份有限公司 | Air-conditioning system, its prevent fires method for early warning, computer equipment and storage medium |
| KR20190118441A (en) * | 2018-04-10 | 2019-10-18 | 주식회사 경동전자 | Air conditioner system and control method thereof |
| CN110887165A (en) * | 2018-09-10 | 2020-03-17 | 奥克斯空调股份有限公司 | Refrigerant leakage detection method and device and air conditioner |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001324191A (en) * | 2000-05-18 | 2001-11-22 | Daikin Ind Ltd | Air-conditioning device |
| JP2010231752A (en) * | 2009-03-28 | 2010-10-14 | Toshitaka Kobayashi | Fire alarm with other power supply control |
| CN107062521A (en) * | 2017-01-25 | 2017-08-18 | 青岛海尔空调器有限总公司 | Convertible frequency air-conditioner fire prevention control method |
| CN107610402A (en) * | 2017-08-14 | 2018-01-19 | 青岛海尔空调器有限总公司 | Fire alarm method and system based on air conditioner |
| CN109631229B (en) * | 2019-01-31 | 2020-10-09 | 四川长虹空调有限公司 | Method for judging rapid leakage of refrigerant of refrigeration system |
| CN112728719A (en) * | 2021-01-26 | 2021-04-30 | 青岛海尔空调器有限总公司 | Fire disaster reminding method and device based on air conditioner indoor unit |
| CN113465119B (en) * | 2021-06-30 | 2023-05-26 | 青岛海尔空调电子有限公司 | Fire detection control method for air conditioner |
-
2021
- 2021-06-30 CN CN202110732609.8A patent/CN113465119B/en active Active
-
2022
- 2022-06-28 WO PCT/CN2022/101906 patent/WO2023274228A1/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2888817B1 (en) * | 1998-02-26 | 1999-05-10 | 松下電器産業株式会社 | Refrigerant recovery control method in air conditioning system |
| JP2009257611A (en) * | 2008-04-11 | 2009-11-05 | Daikin Ind Ltd | Air conditioner |
| CN104075420A (en) * | 2014-07-02 | 2014-10-01 | 珠海格力电器股份有限公司 | Flammable refrigerant air-conditioner fire protection system and application method thereof as well as air-conditioner |
| JP2017166737A (en) * | 2016-03-15 | 2017-09-21 | 株式会社ミナミテクノ | Fire inside exhaust duct detection system and alarm device |
| KR20190118441A (en) * | 2018-04-10 | 2019-10-18 | 주식회사 경동전자 | Air conditioner system and control method thereof |
| CN110887165A (en) * | 2018-09-10 | 2020-03-17 | 奥克斯空调股份有限公司 | Refrigerant leakage detection method and device and air conditioner |
| CN109282419A (en) * | 2018-09-12 | 2019-01-29 | 珠海格力电器股份有限公司 | Air-conditioning system, its prevent fires method for early warning, computer equipment and storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023274228A1 (en) * | 2021-06-30 | 2023-01-05 | 青岛海尔空调电子有限公司 | Fire detection and control method for air conditioner |
| CN114183899A (en) * | 2021-12-09 | 2022-03-15 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium, processor and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113465119B (en) | 2023-05-26 |
| WO2023274228A1 (en) | 2023-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113465119A (en) | Fire detection control method for air conditioner | |
| CN111006355B (en) | Air conditioning unit and running state monitoring method and device thereof | |
| CN105115111A (en) | Air conditioner indoor unit and detection method for temperature sensing bulb of air conditioner indoor unit | |
| CN104266307B (en) | The guard method of air-conditioning and the protection device of air-conditioning | |
| CN107421151B (en) | Air conditioner and refrigerant leakage detection method and device thereof | |
| CN112116775A (en) | Fire detection method of multi-split air-conditioning equipment and multi-split air-conditioning system | |
| CN113112729B (en) | Air conditioner with fire monitoring function and fire monitoring method | |
| CN107957122B (en) | Air conditioning system abnormity judgment method and device | |
| US20190293313A1 (en) | System of hvac fault detection using thermostat data | |
| CN112747433A (en) | Control method, storage medium and control device of air conditioner | |
| CN113639402B (en) | Refrigerant leakage detection and discharge method for air conditioner | |
| CN111237977A (en) | Refrigerant fluorine-deficient state self-checking method and air conditioner | |
| US20230235907A1 (en) | Leakage detection and mitigation system | |
| CN115638523A (en) | Air conditioner refrigerant leakage detection method and device and air conditioner | |
| CN110762806B (en) | Computer lab environmental control system | |
| WO2023020078A1 (en) | Control method and device for air conditioner, and server | |
| AU2018423601A1 (en) | Failure diagnosis system | |
| CN111023437A (en) | Refrigerant leakage detection method of air conditioner and air conditioner | |
| CN106839334B (en) | A kind of air conditioner self-protecting device and the air conditioner with the self-protecting device | |
| CN207196814U (en) | Air conditioner | |
| CN212901929U (en) | Air conditioner indoor unit | |
| WO2017149709A1 (en) | Air conditioner, and monitoring method for abnormalities in air conditioner | |
| CN106679120A (en) | Method and device for detecting fault of air conditioning compressor | |
| CN113685966B (en) | Air conditioner control method and device and air conditioner | |
| CN106403189A (en) | Detection method for refrigerant leakage of air conditioner and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |