CN113465116A - Explosion-proof control method and device of air conditioner and air conditioner - Google Patents
Explosion-proof control method and device of air conditioner and air conditioner Download PDFInfo
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- CN113465116A CN113465116A CN202110599086.4A CN202110599086A CN113465116A CN 113465116 A CN113465116 A CN 113465116A CN 202110599086 A CN202110599086 A CN 202110599086A CN 113465116 A CN113465116 A CN 113465116A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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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
- F24F11/70—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses an explosion-proof control method and device of an air conditioner and the air conditioner, wherein the explosion-proof control method of the air conditioner comprises the following steps: monitoring the running state information of a target air conditioner; the running state information comprises power supply current and inner disc temperature; judging whether the target air conditioner has refrigerant leakage or not based on the running state information; if so, controlling the compressor of the target air conditioner to stop running and controlling the fresh air module to be started. According to the invention, the compressor is controlled to stop and the fresh air module is controlled to open, so that the refrigerant can be prevented from further leaking, and meanwhile, outdoor fresh air can be input indoors, so that the explosion risk caused by high gas concentration of the indoor refrigerant is reduced, and the safety of the air conditioner is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an explosion-proof control method and device of an air conditioner and the air conditioner.
Background
In order to improve the environmental protection of the air conditioner, various environmental protection refrigerant air conditioners have been researched at present, however, some environmental protection refrigerant gases have flammability, when the flammable refrigerant air conditioner leaks, the flammable refrigerant gas is easy to explode due to high concentration of the flammable refrigerant gas, so that the flammable refrigerant air conditioner has high explosion risk and low safety.
Disclosure of Invention
In order to solve the problems, the invention provides an explosion-proof control method and device for an air conditioner and the air conditioner, which reduce the risk of explosion due to high concentration of indoor refrigerant gas and improve the safety of a combustible refrigerant air conditioner.
According to an embodiment of the present invention, in one aspect, an explosion-proof control method for an air conditioner is provided, which is applied to a target air conditioner, in which an indoor unit of the target air conditioner is provided with a fresh air module, and the method includes: monitoring the running state information of a target air conditioner; the running state information comprises power supply current and inner disc temperature; judging whether the target air conditioner has refrigerant leakage or not based on the running state information; if so, controlling the compressor of the target air conditioner to stop running, and controlling the fresh air module to be started.
Through adopting above-mentioned technical scheme, when taking place the refrigerant and revealing, the control compressor is shut down and control new trend module and open, can avoid the refrigerant further to take place to reveal, can be with outdoor new trend input indoor simultaneously, has reduced the higher risk of exploding that takes place of indoor refrigerant gas concentration, has promoted the security of air conditioner.
Preferably, the operation state information includes an outer tray temperature and an operation frequency of a compressor, and the step of determining whether the target air conditioner leaks the refrigerant based on the operation state information includes: judging whether the operating frequency meets a preset frequency condition or not, and judging whether the inner disc temperature meets a preset temperature condition or not; and when the operating frequency meets the preset frequency condition and the inner disc temperature meets the preset temperature condition, judging whether the target air conditioner has refrigerant leakage or not according to the power current and/or the outer disc temperature.
By adopting the technical scheme, whether the running frequency and the inner disc temperature of the compressor meet the preset frequency condition and the preset temperature condition or not is sequentially judged, whether the running frequency and the inner disc temperature of the target air conditioner run abnormally or not can be judged, when the running states of the compressor and the inner disc temperature are abnormal, the judgment is further carried out according to the power supply current and/or the outer disc temperature, the actual running load condition of the target air conditioner can be comprehensively obtained, and the accuracy of judging the leakage of the refrigerant is improved.
Preferably, the step of judging whether the operating frequency meets a preset frequency condition includes: when the running time of a compressor of the target air conditioner reaches a first preset time length, taking the current running frequency as a target frequency; and when the target frequency is greater than or equal to a preset frequency, determining that the operating frequency meets the preset frequency condition.
By adopting the technical scheme, the range of the operating frequency when the compressor is started to operate for the first preset time is judged, whether the target air conditioner operates abnormally can be further judged by combining the operating frequency of the compressor, and a foundation is provided for accurately judging whether refrigerant leakage occurs.
Preferably, the step of judging whether the temperature of the inner disc meets a preset temperature condition includes: acquiring a first inner disc temperature when the compressor is started to operate, and acquiring a second inner disc temperature and a target inner ring temperature when the operating time of the compressor reaches a first preset time; calculating a first temperature difference value between the target inner ring temperature and the second inner ring temperature, and calculating a second temperature difference value between the first inner ring temperature and the second inner ring temperature; and when the first temperature difference value is smaller than or equal to a first preset temperature and the second temperature difference value is smaller than or equal to a second preset temperature, determining whether the temperature of the inner disc meets a preset temperature condition.
By adopting the technical scheme, after the compressor runs for the first preset time, the relation between the inner disc temperature and the indoor environment temperature and the descending amplitude of the inner disc temperature are judged, whether the refrigeration or dehumidification running of the target air conditioner is abnormal or not can be accurately judged, and the accuracy of the refrigerant leakage judgment is further improved.
Preferably, the step of determining whether the target air conditioner has refrigerant leakage according to the power supply current includes: acquiring a target power supply current when the running time of a compressor of the target air conditioner reaches a second preset time; and when the target power supply current is less than or equal to a preset current, determining that the target air conditioner has refrigerant leakage.
By adopting the technical scheme, the magnitude of the power supply current of the target air conditioner is judged, the operation load of the target air conditioner can be indirectly judged, the judgment of whether refrigerant leakage exists or not based on the inner disc temperature of the air conditioner, the operation frequency of the compressor and the operation load is realized, and the reliability of refrigerant leakage detection is ensured.
Preferably, the step of determining whether the target air conditioner leaks the refrigerant according to the temperature of the outer disc includes: acquiring a target outer disc temperature and a target outer ring temperature when the running time of a compressor of the target air conditioner reaches the first preset time; calculating the temperature difference value between the target outer disc temperature and the target outer ring temperature; and when the temperature difference is less than or equal to a third preset temperature, determining that the target air conditioner has refrigerant leakage.
By adopting the technical scheme, the relation between the temperature of the outer disc and the temperature of the outer ring is further judged to judge whether the heat exchange of the target air conditioner is normal or not, the refrigerant leakage can be determined when the heat exchange of the target air conditioner is abnormal, and the reliability of the refrigerant leakage judgment is improved.
Preferably, the explosion-proof control method of the air conditioner further includes: controlling the target air conditioner to send out a refrigerant leakage prompt, and locking a refrigeration mode and a dehumidification mode; and when a fault recovery instruction is received, stopping sending the refrigerant leakage prompt, and unlocking the refrigeration mode and the dehumidification mode.
Through adopting above-mentioned technical scheme, take place the refrigerant at the target air conditioner and reveal the back, reveal the suggestion through sending the refrigerant to remind the user to overhaul the air conditioner, through locking refrigeration mode and dehumidification mode, can forbid target air conditioner refrigerate or dehumidify once more before the maintenance, avoid the refrigerant to reveal too much and lead to the higher emergence explosion of combustible gas concentration, promoted explosion-proof control's reliability.
According to an embodiment of the present invention, in another aspect, an explosion-proof control device for an air conditioner is provided, which is applied to a target air conditioner, wherein a fresh air module is disposed in an indoor unit of the target air conditioner, and the device includes: the monitoring module is used for monitoring the running state information of the target air conditioner; the running state information comprises power supply current and inner disc temperature; the judging module is used for judging whether the target air conditioner leaks the refrigerant or not based on the running state information; and the control module is used for controlling the compressor of the target air conditioner to stop running and controlling the fresh air module to be started when the target air conditioner generates refrigerant leakage.
According to an embodiment of the present invention, in another aspect, an air conditioner is provided, which includes a fresh air module, a computer readable storage medium storing a computer program, and a processor, wherein the computer program is read by the processor and executed to implement the method according to any one of the first aspect.
According to an embodiment of the present invention, in another aspect, a computer-readable storage medium is provided, which stores a computer program, which when read and executed by a processor, implements the method according to any one of the first aspect.
The invention has the following beneficial effects: whether the air conditioning unit has the refrigerant to reveal can be judged through monitoring the mains current and the inner disc temperature of target air conditioner, when taking place the refrigerant and revealing, shut down and control the new trend module through controlling the compressor and open, can avoid the refrigerant further to take place to reveal, can be indoor with outdoor new trend input simultaneously, reduced the higher risk of exploding that takes place of indoor refrigerant gas concentration, promoted the security of combustible refrigerant air conditioner.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a flow chart of an explosion-proof control method for an air conditioner according to the present invention;
fig. 2 is a schematic structural diagram of an explosion-proof control device of an air conditioner provided by the invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The present embodiment provides an explosion-proof control method for an air conditioner, which can be applied to a controller of a target air conditioner, referring to a flowchart of the explosion-proof control method for the air conditioner shown in fig. 1, and the method mainly includes the following steps S102 to S106:
step S102: and monitoring the running state information of the target air conditioner.
When the target air conditioner enters a cooling mode or a dehumidifying mode to operate, the operating state information of the target air conditioner is acquired in real time based on the controller. The running state information comprises power supply current and inner disc temperature (namely the coil temperature of the indoor unit), the whole machine running current of the target air conditioner is detected in real time, namely the running current of a power supply module, which is hereinafter referred to as power supply current, and the inner disc temperature is detected in real time based on a temperature sensor arranged in the middle of the coil of the indoor unit.
The target air conditioner comprises an indoor unit and an outdoor unit, wherein a fresh air module is arranged in the indoor unit, and the fresh air module is in communication connection with a controller of the indoor unit. The above-mentioned target air conditioner may be any flammable refrigerant air conditioner that requires explosion-proof control, such as an R290 air conditioner.
Step S104: and judging whether the target air conditioner has refrigerant leakage or not based on the running state information.
When the air conditioner leaks the refrigerant, the flow of the refrigerant in the pipeline is reduced, the running load of the air conditioner is reduced, and whether the target air conditioner is in a normal running state or not can be judged according to the coil temperature of the target air conditioner and the range or the change condition of the power supply current, so that whether the refrigerant leakage occurs or not is judged.
Step S106: if so, controlling the compressor of the target air conditioner to stop running and controlling the fresh air module to be started.
And when the target air conditioner is determined to have refrigerant leakage, controlling the compressor to stop, and further closing an electronic expansion valve in the target air conditioner to prevent the refrigerant from further leaking. The fresh air module in the indoor unit is controlled to start to operate so as to convey outdoor fresh air to the indoor space and reduce the refrigerant gas concentration, so that the refrigerant gas concentration is not easy to reach the explosion concentration range, and the explosion risk of the target air conditioner is reduced.
According to the explosion-proof control method of the air conditioner, whether the air conditioning unit generates the refrigerant leakage or not can be judged by monitoring the power supply current and the inner disc temperature of the target air conditioner, when the refrigerant leakage occurs, the compressor is controlled to stop and the fresh air module is controlled to be opened, the refrigerant leakage can be avoided, meanwhile, outdoor fresh air can be input indoors, the risk of explosion due to high indoor refrigerant gas concentration is reduced, and the safety of the air conditioner is improved.
In order to accurately detect whether the target air conditioner has refrigerant leakage, the present embodiment provides an implementation manner for determining whether the target air conditioner has refrigerant leakage based on the operation state information, and the following steps (1) to (2) may be specifically referred to:
step (1): and judging whether the operating frequency meets a preset frequency condition or not, and judging whether the inner disc temperature meets a preset temperature condition or not.
The running state information further comprises the temperature of an outer disc and the running frequency of the compressor, the current running frequency of the compressor is obtained in real time, the temperature of the outer disc is the coil temperature of the outdoor unit, and the temperature of the outer disc is detected in real time based on a temperature sensor arranged in the coil of the outdoor unit.
In one embodiment, when the operation time of the compressor of the target air conditioner reaches a first preset time length, the current operation frequency is taken as the target frequency; and when the target frequency is greater than or equal to the preset frequency, determining that the operating frequency meets the preset frequency condition.
The value range of the first preset time can be 5-10 min, when the target air conditioner is started in a refrigeration mode or a dehumidification mode, the compressor is started, the continuous operation time of the compressor after the start is detected, when the operation time of the compressor after the start is greater than or equal to the first preset time, the target air conditioner is determined to be in a stable refrigeration or dehumidification state, the operation frequency of the compressor during the first time is recorded as a target frequency, whether the target frequency is greater than or equal to a preset frequency m is judged, and if yes, the compressor is determined to be in stable refrigeration or dehumidification operation, namely the operation frequency of the compressor meets a preset frequency condition. The preset frequency may be in a range of 50-70 Hz.
By judging the range of the operating frequency when the compressor is started to operate for the first preset time, whether the target air conditioner operates abnormally can be further judged by combining the operating frequency of the compressor, and a foundation is provided for accurately judging whether refrigerant leakage occurs.
In another embodiment, the first inner disk temperature T is obtained when the compressor is started[ inner plate 0)]Acquiring the second inner disc temperature T when the running time of the compressor reaches a first preset time length x[ inner plate x]And target inner ring temperature T[ inner ring x](ii) a Calculating a first temperature difference value between the target inner ring temperature and the second inner disc temperature, and calculating a second temperature difference value between the first inner disc temperature and the second inner disc temperature; and when the first temperature difference is smaller than or equal to a first preset temperature A and the second temperature difference is smaller than or equal to a second preset temperature B, determining whether the temperature of the inner disc meets a preset temperature condition. In order to accurately determine whether the target air conditioner is abnormal in operation, the value range of the first preset temperature a may be 0 to 2 degrees, and the value range of the second preset temperature B may be 0 to 2 degrees.
In the refrigeration process of the air conditioner, because the air outlet can give out cold air, along with the increase of the refrigeration or dehumidification operation time of the air conditioner, the temperature of the inner disc can be reduced, and when the compressor of the target air conditioner operates for x time, if the temperature of the inner disc meets T at the same time[ inner ring x]-T[ inner plate x]A and T are not more than[ inner plate 0)]-T[ inner plate x]When the temperature of the inner disc is less than or equal to B, the temperature of the inner disc is not far lower than the indoor environment temperature, the temperature drop amplitude of the inner disc temperature is small, the running state of the target air conditioner is abnormal, and the possibility of refrigerant leakage is high.
After the compressor runs for the first preset time, the relation between the inner disc temperature and the indoor environment temperature and the descending amplitude of the inner disc temperature are judged, whether the refrigeration or dehumidification running of the target air conditioner is abnormal or not can be accurately judged, and the accuracy of judging the leakage of the refrigerant is improved.
Step (2): and when the operating frequency meets a preset frequency condition and the temperature of the inner disc meets a preset temperature condition, judging whether the target air conditioner has refrigerant leakage or not according to the power current and/or the temperature of the outer disc.
When the running frequency of the compressor of the target air conditioner is more than or equal to the preset frequency m and is withinThe temperature of the disk satisfies T[ inner ring x]-T[ inner plate x]A and T are not more than[ inner plate 0)]-T[ inner plate x]When the temperature of the inner plate is less than or equal to B, namely the temperature of the inner plate is not effectively reduced when the running frequency of the target air conditioner is higher, the refrigerating effect of the target air conditioner is poorer, the running state is abnormal, and whether refrigerant leakage exists or not is further judged according to the power current and/or the temperature of the outer plate of the target air conditioner.
Whether the running frequency and the inner disc temperature of the compressor meet the preset frequency condition and the preset temperature condition or not is judged in sequence to judge whether the running frequency and the inner disc temperature of the target air conditioner run abnormally or not, when the running states of the compressor and the inner disc temperature are abnormal, the judgment is further carried out according to the power supply current and/or the outer disc temperature, the actual running load condition of the target air conditioner can be comprehensively obtained, and the accuracy of judging the leakage of the refrigerant is improved.
In one embodiment, whether the target air conditioner has refrigerant leakage may be determined according to the power supply current: obtaining a target power supply current I when the running time of a compressor of a target air conditioner reaches a second preset time length y[ AC Current y](ii) a When the target power supply current I[ AC Current y]And when the current is less than or equal to the preset current D, determining that the refrigerant leakage occurs in the target air conditioner. The second preset time is shorter than the first preset time, the value range of the second preset time can be 1-3 min, and the preset current D can be 50-60% of rated current.
When the running time of the compressor reaches a second preset time length, the target air conditioner is in stable refrigeration or dehumidification running, the power supply current of the second preset time length is recorded as a target power supply current, if the target power supply current is smaller, the running load of the target air conditioner is over small, namely when the target air conditioner simultaneously meets the running frequency of more than or equal to m Hz and T[ inner ring x]-T[ inner plate x]≤A、T[ inner plate 0)]-T[ inner plate x]B and I are not more than[ AC Current y]And when the temperature is less than or equal to D, determining that the target air conditioner has refrigerant leakage.
In another embodiment, whether the target air conditioner has refrigerant leakage or not may be determined according to the temperature of the outer panel: acquiring a target outer disc when the running time of a compressor of a target air conditioner reaches a first preset time length xTemperature T[ outer plate x]And target outer ring temperature T[ outer Ring x](ii) a And judging the refrigerant leakage of the target air conditioner according to the target outer disc temperature and the target outer ring temperature. Recording the temperature of the outer disc when the running time of the compressor reaches a first preset time length x as a target temperature T of the outer disc[ outer plate x]Recording the outdoor environment temperature when the running time of the compressor reaches a first preset time length x as a target outer ring temperature T[ outer Ring x]。
Calculating the temperature difference between the target outer disc temperature and the target outer ring temperature; and when the temperature difference is less than or equal to a third preset temperature C, determining that the target air conditioner has refrigerant leakage. When the running time of the compressor reaches a second preset time length, the target air conditioner is in stable refrigeration or dehumidification running, the temperature of the outer disc can be gradually increased in the heat exchange process of the outdoor unit in a normal state, and when T is reached[ outer plate x]-T[ outer Ring x]And when the temperature is less than or equal to C, namely the temperature of the outer disc is lower, the heat exchange load of the outdoor unit is lower, and the refrigerant leakage of the target air conditioner is determined. Namely, when the target air conditioner simultaneously meets the requirements that the operating frequency is more than or equal to mHz and T[ inner ring x]-T[ inner plate x]≤A、T[ inner plate 0)]-T[ inner plate x]Not more than B and T[ outer plate x]-T[ outer Ring x]And when the temperature is less than or equal to C, determining that the target air conditioner has refrigerant leakage.
The relation between the temperature of the outer disc and the temperature of the outer ring is further judged to judge whether the heat exchange of the target air conditioner is normal or not, the refrigerant leakage can be determined to occur when the heat exchange of the target air conditioner is abnormal, and the reliability of the refrigerant leakage judgment is improved.
In another embodiment, whether the target air conditioner has refrigerant leakage or not may be determined according to the power supply current and the temperature of the outer panel: when the target air conditioner simultaneously meets the requirements that the operating frequency is more than or equal to mHz and T[ inner ring x]-T[ inner plate x]≤A、T[ inner plate 0)]-T[ inner plate x]≤B、I[ AC Current y]Less than or equal to D and T[ outer plate x]-T[ outer Ring x]And when the temperature is less than or equal to C, determining that the target air conditioner has refrigerant leakage.
Since the second preset time period is shorter than the first preset time period, in a possible implementation manner, the execution sequence of the explosion-proof control method may also be: when the running time of a compressor of the target air conditioner reaches a second preset time length, taking the current power supply current as the target power supply current; when the target power supply current is less than or equal to the preset current and the running time of the compressor reaches a first preset time length, judging whether the running frequency of the compressor meets a preset frequency condition or not, and judging whether the temperature of the inner disc meets a preset temperature condition or not; and when the operating frequency meets a preset frequency condition and the temperature of the inner disc meets a preset temperature condition, determining that the target air conditioner has refrigerant leakage.
In one embodiment, the method further comprises: after the fresh air control module is started, the target air conditioner is controlled to send out a refrigerant leakage prompt, a refrigeration mode and a dehumidification mode are locked, when a fault recovery instruction is received, the refrigerant leakage prompt is stopped, the refrigeration mode and the dehumidification mode are unlocked, and after the refrigeration mode and the dehumidification mode are unlocked, a refrigeration system of the target air conditioner can operate. The fault recovery command may be input by a user through a remote controller or a control panel.
The indoor unit of the target air conditioner is provided with a display, the refrigerant leakage prompt can comprise a sound prompt, a light prompt or a display prompt, a refrigerant leakage fault code is displayed through the control display to prompt a user, and the refrigerant leakage fault code can be a prompt code such as 'refrigerant leakage' or 'error'. After the refrigerant leaks at the target air conditioner, the leakage prompt of the refrigerant is sent to remind a user to overhaul the air conditioner, the target air conditioner can be forbidden to refrigerate or dehumidify again before maintenance through locking the refrigeration mode and the dehumidification mode, the phenomenon that the concentration of combustible gas is high due to excessive leakage of the refrigerant is avoided, and the reliability of explosion-proof control is improved.
According to the explosion-proof control method of the air conditioner, when the air conditioner is judged to have refrigerant leakage, the air conditioner is forbidden to operate in the refrigeration mode and the dehumidification mode, and the fresh air system is controlled to be started to prevent explosion, so that the explosion probability of the flammable refrigerant air conditioner can be effectively reduced, and the safety of the flammable refrigerant air conditioner is improved.
Corresponding to the explosion-proof control method of the air conditioner provided in the first embodiment, an embodiment of the present invention provides an example of performing explosion-proof control on an R290 air conditioner by using the explosion-proof control method of the air conditioner, and the following steps 1 to 3 may be specifically referred to for execution:
step 1: during the cooling mode or the dehumidification mode, the outdoor unit controller continuously detects whether there is a refrigerant shortage.
When the compressor is started and continuously operates for x time, judging whether the R290 air conditioner simultaneously meets the following conditions I to III:
the first condition is as follows: t is[ inner ring x]-T[ inner plate x]≤A；
And a second condition: t is[ inner plate 0)]-T[ inner plate x]≤B；
And (3) carrying out a third condition: the current operating frequency of the compressor is more than or equal to m Hz
On the basis that the R290 air conditioner simultaneously satisfies the conditions I to III, when the following condition IV or condition V is satisfied, the air conditioner is judged to lack the refrigerant, and the air conditioner generates refrigerant leakage.
And a fourth condition: t is[ outer plate x]-T[ outer Ring x]≤C；
And a fifth condition: i is[ AC Current y]≤D(I[ AC Current y]Power supply current for y time of continuous operation after the compressor is turned on).
Step 2: when the refrigerant is determined to be lacking, the whole refrigerating system is closed, the fresh air module is forcibly opened to convey fresh air from the outside to the inside, and the refrigerant leakage fault code is displayed through the display.
And step 3: when a fault recovery instruction input by a user from a remote controller is received, the refrigerant leakage fault code display is cancelled, and the refrigeration system can operate.
Corresponding to the explosion-proof control method of the air conditioner provided in the first embodiment, an embodiment of the present invention provides an explosion-proof control device of an air conditioner, which can be applied to a target air conditioner, wherein an indoor unit of the target air conditioner is provided with a fresh air module, as shown in a schematic structural diagram of the explosion-proof control device of the air conditioner in fig. 2, the device includes the following modules:
the monitoring module 21 is used for monitoring the running state information of the target air conditioner; the operation state information includes power supply current and inner disc temperature.
And the judging module 22 is configured to judge whether the target air conditioner has refrigerant leakage based on the operation state information.
And the control module 23 is used for controlling the compressor of the target air conditioner to stop running and controlling the fresh air module to be started when the target air conditioner generates refrigerant leakage.
The explosion-proof control device of above-mentioned air conditioner that this embodiment provided, supply current and inner disc temperature through monitoring target air conditioner can judge whether air conditioning unit takes place the refrigerant and reveals, when taking place the refrigerant and reveals, shuts down and controls the new trend module through control compressor and open, can avoid the refrigerant further to take place to reveal, can be indoor with outdoor new trend input simultaneously, has reduced the higher risk of exploding of indoor refrigerant gas concentration, has promoted the security of air conditioner.
In an embodiment, the operation status information includes an outer disc temperature and an operation frequency of the compressor, and the determining module 22 is further configured to determine whether the operation frequency meets a preset frequency condition, and determine whether the inner disc temperature meets a preset temperature condition; and when the operating frequency meets a preset frequency condition and the temperature of the inner disc meets a preset temperature condition, judging whether the target air conditioner has refrigerant leakage or not according to the power current and/or the temperature of the outer disc.
In an embodiment, the determining module 22 is further configured to take the current operating frequency as the target frequency when the operating time of the compressor of the target air conditioner reaches a first preset time length; and when the target frequency is greater than or equal to the preset frequency, determining that the operating frequency meets the preset frequency condition.
In an embodiment, the determining module 22 is further configured to obtain a first inner disc temperature when the compressor starts to operate, and obtain a second inner disc temperature and a target inner ring temperature when the operation time of the compressor reaches a first preset time; calculating a first temperature difference value between the target inner ring temperature and the second inner disc temperature, and calculating a second temperature difference value between the first inner disc temperature and the second inner disc temperature; and when the first temperature difference value is smaller than or equal to a first preset temperature and the second temperature difference value is smaller than or equal to a second preset temperature, determining whether the temperature of the inner disc meets a preset temperature condition.
In an embodiment, the determining module 22 is further configured to obtain a target power current when the operation time of the compressor of the target air conditioner reaches a second preset time; and when the target power supply current is less than or equal to the preset current, determining that the target air conditioner has refrigerant leakage.
In an embodiment, the determining module 22 is further configured to obtain a target outer disc temperature and a target outer ring temperature when the operation time of the compressor of the target air conditioner reaches a first preset time; calculating the temperature difference between the target outer disc temperature and the target outer ring temperature; and when the temperature difference is less than or equal to a third preset temperature, determining that the target air conditioner has refrigerant leakage.
In one embodiment, the above apparatus further comprises:
and the locking module is used for controlling the target air conditioner to send out a refrigerant leakage prompt and locking the refrigeration mode and the dehumidification mode.
And the unlocking module is used for stopping sending the refrigerant leakage prompt and unlocking the refrigeration mode and the dehumidification mode when receiving the fault recovery instruction.
The explosion-proof control device of above-mentioned air conditioner that this embodiment provided is through when judging that the air conditioner takes place the refrigerant and reveals, forbids air conditioner operation refrigeration mode and dehumidification mode to control the new trend system and open and prevent the explosion, can effectively reduce the explosion probability of flammable refrigerant air conditioner, promoted the security of flammable refrigerant air conditioner.
Corresponding to the explosion-proof control method of the air conditioner provided by the first embodiment, the present embodiment provides an air conditioner, where the air conditioner includes a fresh air module, a computer-readable storage medium storing a computer program, and a processor, and when the computer program is read by the processor and runs, the explosion-proof control method of the air conditioner provided by the first embodiment is implemented.
The present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the embodiment of the explosion-proof control method for an air conditioner, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The explosion-proof control device of the air conditioner and the air conditioner disclosed by the embodiment correspond to the explosion-proof control method of the air conditioner disclosed by the embodiment, so that the description is relatively simple, and relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An explosion-proof control method of an air conditioner is characterized in that the method is applied to a target air conditioner, a fresh air module is arranged in an indoor unit of the target air conditioner, and the method comprises the following steps:
monitoring the running state information of a target air conditioner; the running state information comprises power supply current and inner disc temperature;
judging whether the target air conditioner has refrigerant leakage or not based on the running state information;
if so, controlling the compressor of the target air conditioner to stop running, and controlling the fresh air module to be started.
2. The explosion-proof control method of an air conditioner according to claim 1, wherein the operation state information includes an outer panel temperature and an operation frequency of a compressor, and the step of determining whether the target air conditioner has refrigerant leakage based on the operation state information includes:
judging whether the operating frequency meets a preset frequency condition or not, and judging whether the inner disc temperature meets a preset temperature condition or not;
and when the operating frequency meets the preset frequency condition and the inner disc temperature meets the preset temperature condition, judging whether the target air conditioner has refrigerant leakage or not according to the power current and/or the outer disc temperature.
3. The explosion-proof control method of an air conditioner according to claim 2, wherein the step of judging whether the operation frequency satisfies a preset frequency condition includes:
when the running time of a compressor of the target air conditioner reaches a first preset time length, taking the current running frequency as a target frequency;
and when the target frequency is greater than or equal to a preset frequency, determining that the operating frequency meets the preset frequency condition.
4. The explosion-proof control method of an air conditioner according to claim 2, wherein the step of judging whether the temperature of the inner panel satisfies a preset temperature condition includes:
acquiring a first inner disc temperature when the compressor is started to operate, and acquiring a second inner disc temperature and a target inner ring temperature when the operating time of the compressor reaches a first preset time;
calculating a first temperature difference value between the target inner ring temperature and the second inner ring temperature, and calculating a second temperature difference value between the first inner ring temperature and the second inner ring temperature;
and when the first temperature difference value is smaller than or equal to a first preset temperature and the second temperature difference value is smaller than or equal to a second preset temperature, determining whether the temperature of the inner disc meets a preset temperature condition.
5. The explosion-proof control method of an air conditioner according to claim 2, wherein the step of determining whether the target air conditioner has refrigerant leakage according to the power current includes:
acquiring a target power supply current when the running time of a compressor of the target air conditioner reaches a second preset time;
and when the target power supply current is less than or equal to a preset current, determining that the target air conditioner has refrigerant leakage.
6. The explosion-proof control method of an air conditioner according to claim 4, wherein the step of judging whether the target air conditioner has refrigerant leakage according to the temperature of the outer panel includes:
acquiring a target outer disc temperature and a target outer ring temperature when the running time of a compressor of the target air conditioner reaches the first preset time;
calculating the temperature difference value between the target outer disc temperature and the target outer ring temperature;
and when the temperature difference is less than or equal to a third preset temperature, determining that the target air conditioner has refrigerant leakage.
7. An explosion-proof control method of an air conditioner according to any one of claims 1 to 6, further comprising:
controlling the target air conditioner to send out a refrigerant leakage prompt, and locking a refrigeration mode and a dehumidification mode;
and when a fault recovery instruction is received, stopping sending the refrigerant leakage prompt, and unlocking the refrigeration mode and the dehumidification mode.
8. The utility model provides an explosion-proof controlling means of air conditioner which characterized in that is applied to the target air conditioner, be provided with the new trend module in the indoor set of target air conditioner, the device includes:
the monitoring module is used for monitoring the running state information of the target air conditioner; the running state information comprises power supply current and inner disc temperature;
the judging module is used for judging whether the target air conditioner leaks the refrigerant or not based on the running state information;
and the control module is used for controlling the compressor of the target air conditioner to stop running and controlling the fresh air module to be started when the target air conditioner generates refrigerant leakage.
9. An air conditioner comprising a fresh air module, a computer readable storage medium storing a computer program and a processor, the computer program when read and executed by the processor implementing the method of any one of claims 1-7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method according to any one of claims 1-7.
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Effective date of registration: 20230510 Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Applicant after: NINGBO AUX ELECTRIC Co.,Ltd. Address before: 1001-1005, building 3, Tsinghua Science and Technology Park (Zhuhai) phase II scientific research incubation building, 101 University Road, Tangjiawan Town, high tech Zone, Zhuhai City, Guangdong Province, 519080 Applicant before: ZHUHAI TUOXIN TECHNOLOGY Co.,Ltd. Applicant before: NINGBO AUX ELECTRIC Co.,Ltd. |
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