CN116294062A - Detection method and detection device for air conditioner refrigerant leakage and air conditioner - Google Patents
Detection method and detection device for air conditioner refrigerant leakage and air conditioner Download PDFInfo
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- CN116294062A CN116294062A CN202310263414.2A CN202310263414A CN116294062A CN 116294062 A CN116294062 A CN 116294062A CN 202310263414 A CN202310263414 A CN 202310263414A CN 116294062 A CN116294062 A CN 116294062A
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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
- F24F11/62—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
- F24F11/88—Electrical aspects, e.g. 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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
Abstract
The invention belongs to the technical field of air conditioners, and particularly relates to a detection method and a detection device for air conditioner refrigerant leakage and an air conditioner, wherein the air conditioner comprises: the sensor is connected with the control board and is used for feeding back pulse signals for identifying the flow characteristics of the refrigerant to the control board; the method comprises the following steps: acquiring a pulse signal fed back by the sensor; generating a control strategy for adjusting the operation of the compressor according to the pulse signal; controlling operation of the compressor according to the control strategy; the detection device includes: the signal acquisition module is used for acquiring a pulse signal fed back by the sensor; the strategy generation module is used for generating a control strategy for regulating the operation of the compressor according to the pulse signals; and the control operation module is used for controlling the operation of the compressor according to the control strategy. According to the detection method and the detection device for the leakage of the refrigerant of the air conditioner and the air conditioner, whether the refrigerant leaks or not is judged according to the pulse signal, and a control strategy is correspondingly generated.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a detection method and device for air conditioner refrigerant leakage and an air conditioner.
Background
The refrigerant is the 'blood' of the air conditioner, and the filling quantity of the refrigerant can influence the running condition of the air conditioner; when the refrigerant is insufficient, the air conditioner cannot exert its capability. Therefore, the proper refrigerant is filled in the machine before the air conditioner leaves the factory, but the condition of insufficient refrigerant or leakage occurs with the increase of service life or other reasons.
The existing refrigerants are colorless and odorless gases, so that leakage problems are not easy to find, once the leakage of the refrigerants occurs, the refrigerating and heating efficiency of the air conditioner becomes low, meanwhile, if the time is found later, the maintenance cost is increased, and the safety problem exists.
Disclosure of Invention
In order to be found in time when refrigerant leaks, and avoid a series of problems such as low operation efficiency, high subsequent maintenance cost, potential safety hazard and the like caused by refrigerant leakage, the invention provides a detection method for detecting the refrigerant leakage of an air conditioner, wherein the air conditioner comprises the following steps: the sensor is connected with the control board and is used for feeding back pulse signals for identifying the flow characteristics of the refrigerant to the control board;
the method comprises the following steps:
acquiring a pulse signal fed back by the sensor;
generating a control strategy for adjusting the operation of the compressor according to the pulse signal;
and controlling the operation of the compressor according to the control strategy.
According to the method for detecting air conditioner refrigerant leakage provided by the invention, the step of generating the control strategy for adjusting the operation of the compressor according to the pulse signal specifically comprises the following steps:
determining that the refrigerant flowing characteristic of the pulse signal identifier is refrigerant leakage, and acquiring a suspected refrigerant type of the leaked refrigerant;
and generating a control strategy for adjusting the operation of the compressor according to the suspected refrigerant type.
According to the method for detecting leakage of air-conditioning refrigerant provided by the invention, the step of obtaining the suspected refrigerant type of the leaked refrigerant specifically comprises the following steps:
acquiring type code information of a stored refrigerant type;
determining a comparison result according to the type code information and the suspected refrigerant type;
and determining that the suspected refrigerant type is a first refrigerant type or a second refrigerant type according to the comparison result.
According to the method for detecting leakage of air-conditioning refrigerant provided by the invention, the step of controlling the operation of the compressor according to the control strategy specifically comprises the following steps:
determining the suspected refrigerant type as a first refrigerant type, and reducing the instant operation frequency of the compressor to a first preset frequency, wherein the first preset frequency is the operation frequency of the compressor corresponding to the refrigerant when leakage is slowed down;
determining the suspected refrigerant type as a second refrigerant type, and increasing the instant operation frequency of the compressor to a second preset frequency, wherein the second preset frequency is the operation frequency of the compressor corresponding to the refrigerant when leakage is slowed down.
According to the method for detecting air conditioner refrigerant leakage provided by the invention, the step of generating the control strategy for adjusting the operation of the compressor according to the pulse signal further comprises the following steps:
and determining that the refrigerant identified by the pulse signal leaks, and controlling an alarm system to give an alarm by the control panel.
According to the method for detecting air conditioner refrigerant leakage provided by the invention, the step of generating the control strategy for adjusting the operation of the compressor according to the pulse signal specifically comprises the following steps:
the pulse signal is the duration of high level and low level in one period;
acquiring a comparison result of high-level duration and low-level duration of the pulse signal in a previous period;
and determining the refrigerant flow characteristics of the pulse signal mark according to the comparison result.
According to the method for detecting air conditioner refrigerant leakage provided by the invention, the step of determining the refrigerant flow characteristics of the pulse signal identifier according to the comparison result specifically comprises the following steps:
determining that the high-level duration time of the pulse signal is increased to be a first preset time and the low-level duration time of the pulse signal is shortened to be a second preset time in comparison with the high-level duration time in the previous period, wherein the refrigerant flow characteristic of the pulse signal mark is refrigerant leakage;
the first preset time is a high-level duration corresponding to refrigerant leakage, and the second preset time is a low-level duration corresponding to refrigerant leakage.
According to the method for detecting air conditioner refrigerant leakage provided by the invention, in the step of determining the refrigerant flow characteristics of the pulse signal identifier according to the comparison result, the method further comprises the following steps:
determining that the high-level duration time of the pulse signal is increased to be third preset time and the low-level duration time of the pulse signal is shortened to be fourth preset time in comparison with the high-level duration time in the previous period, wherein the refrigerant flow characteristic of the pulse signal mark is the sensor fault;
the third preset time is a high-level duration corresponding to the sensor fault, and the fourth preset time is a low-level duration corresponding to the sensor fault.
The invention also provides a device for detecting leakage of the air conditioner refrigerant, which comprises:
the signal acquisition module is used for acquiring a pulse signal fed back by the sensor;
the strategy generation module is used for generating a control strategy for regulating the operation of the compressor according to the pulse signals;
and the control operation module is used for controlling the operation of the compressor according to the control strategy.
The invention also provides an air conditioner, comprising: a sensor and a control board;
the sensor is connected with the control board and is used for feeding back pulse signals for identifying the flow characteristics of the refrigerant to the control board;
the control board acquires a pulse signal fed back by the sensor; generating a control strategy for adjusting the operation of the compressor according to the pulse signal; and controlling operation of the compressor according to the control strategy.
The invention has the beneficial effects that:
according to the detection method and the detection device for the leakage of the air conditioner refrigerant, and the air conditioner, provided by the invention, the pulse signal for identifying the flow characteristic of the refrigerant is monitored and fed back in real time through the sensor, whether the refrigerant leaks or not is judged according to the pulse signal, and a control strategy is correspondingly generated, so that the operation of the compressor is regulated, namely, when the refrigerant leaks, the operation frequency of the compressor is regulated to slow down the leakage speed of the refrigerant, the loss of a user is reduced, and the safety of the user is protected.
The detection method, the detection device and the air conditioner for detecting the leakage of the refrigerant of the air conditioner can accurately detect whether the refrigerant leaks in real time, are high in sensitivity and practicability, and timely adjust the operation of the compressor when the refrigerant leakage is detected, so that the refrigerant leakage speed is slowed down, and a series of problems such as low operation efficiency of the air conditioner, high subsequent maintenance cost, potential safety hazards easily caused and the like are avoided.
Drawings
In order to more clearly illustrate the invention or the technical solutions in the related art, the drawings used in the description of the embodiments or the related art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for detecting leakage of an air conditioner refrigerant;
FIG. 2 is a schematic diagram of an exemplary embodiment of a method for detecting leakage of an air conditioner coolant according to the present invention;
FIG. 3 is a state diagram of pulse signals in the method for detecting air conditioner refrigerant leakage provided by the invention;
fig. 4 is a schematic structural diagram of a detecting device for detecting leakage of an air conditioner refrigerant according to the present invention;
fig. 5 is a schematic structural view of an air conditioner provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "vertical," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The invention provides a detection method and a detection device for air conditioner refrigerant leakage and an air conditioner.
As shown in fig. 1, a flow chart of a method for detecting leakage of an air-conditioning refrigerant is provided, and it can be intuitively known from the chart that when detecting whether leakage occurs in the air-conditioning refrigerant, a pulse signal which is fed back by a sensor and identifies the flow characteristics of the refrigerant is firstly obtained, then a control strategy for adjusting the operation of a compressor is generated according to the pulse signal, and the operation of the compressor is controlled according to the control strategy. For example, if the pulse signal feedback refrigerant does not have abnormal leakage, the compressor normally operates; if the pulse signal feeds back abnormal leakage of the refrigerant, the operation frequency of the compressor is controlled to be increased or decreased, so that the leakage speed of the refrigerant is slowed down, the loss of a user is reduced, and the safety of the user is ensured.
As shown in fig. 2, a specific embodiment of a method for detecting leakage of an air-conditioning refrigerant is provided, and it can be intuitively known from the figure that the control board can control and adjust the operation frequency of the air-conditioning compressor according to the type of the leaked refrigerant, and since the refrigerant can only exist in one type in one machine and cannot be changed, taking the types of R290, R32 and R410A refrigerants as examples, if the type of the leaked refrigerant is the R290 refrigerant, the control board controls the compressor to reduce the operation frequency, and if the type of the leaked refrigerant is the R32 or R410A refrigerant, the control board controls the compressor to raise the operation frequency, so that the leakage speed of the refrigerant is reduced.
As shown in fig. 3, a state diagram of a pulse signal in a method for detecting leakage of an air conditioner refrigerant is provided, and it can be intuitively known from the state diagram that according to duration of a high level and a low level of the pulse signal identifying a flowing characteristic of the refrigerant in one period, the pulse signal is divided into four states, namely a preheating state, a working state, an alarm state and a fault state, wherein the preheating state and the working state represent normal operation states of the air conditioner, namely the refrigerant is not leaked in the preheating state and the working state, the alarm state represents abnormal operation states of the air conditioner, namely the refrigerant is leaked in the alarm state, and the fault state represents abnormal states of a sensor, namely the sensor is damaged or fails in the fault state.
Further, the pulse signal lasts 375ms in one period; in the preheating state, the duration of the high level is 75ms, and the duration of the low level is 300ms; in the working state, the duration of the high level is 75ms, and the duration of the low level is 300ms; in the alarm state, the duration of the high level is 225ms, and the duration of the low level is 150ms; in the fault state, the high level lasts 300ms, and the low level lasts 75ms.
As shown in fig. 4, a schematic structural diagram of a detecting device for detecting leakage of an air conditioner refrigerant is provided, and as can be seen from the figure, the detecting device includes: the system comprises a signal acquisition module, a strategy generation module and a control operation module; the signal acquisition module is used for acquiring a pulse signal fed back by the sensor; the strategy generation module is used for generating a control strategy for regulating the operation of the compressor according to the pulse signals; the control operation module is used for controlling the operation of the compressor according to the control strategy. The method for detecting the leakage of the air conditioner refrigerant is realized.
As shown in fig. 5, there is provided a schematic structural diagram of an air conditioner, which can be intuitively known from the figure, the air conditioner includes: the sensor is used for feeding back pulse signals for identifying the flow characteristics of the refrigerant to the control board; the control board acquires a pulse signal fed back by the sensor, generates a control strategy for adjusting the operation of the air conditioner compressor according to the pulse signal, and controls the operation of the air conditioner compressor according to the control strategy. The method for detecting the leakage of the air conditioner refrigerant is realized.
In order to better understand the above technical solution, the following describes in detail a detection method and a detection device for detecting leakage of refrigerant of an air conditioner and each specific embodiment of the air conditioner.
According to an embodiment of the first aspect provided by the present invention, referring to fig. 1 to 3, there is provided a method for detecting leakage of refrigerant of an air conditioner, wherein,
the air conditioner comprises: the sensor is connected with the control board and is used for feeding back pulse signals for identifying the flow characteristics of the refrigerant to the control board;
the detection method comprises the following steps:
acquiring a pulse signal fed back by a sensor;
generating a control strategy for adjusting the operation of the compressor according to the pulse signals;
and controlling the operation of the compressor according to the control strategy.
The refrigerant is 'blood' of the air conditioner, the existing refrigerant is colorless and odorless gas, the leakage problem is not easy to find, once the refrigerant leakage occurs, the refrigerating and heating efficiency of the air conditioner is lowered, meanwhile, if the time is found later, the maintenance cost is raised, the safety problem exists, and although the refrigerant of the existing air conditioner has the characteristics of no toxicity and low ignition point, part of the refrigerant also has the defects, and the refrigerant can explode when encountering open fire.
In order to solve the above problems, it can timely find out leakage of the refrigerant, avoiding a series of problems such as reduced operation efficiency of the air conditioner, high subsequent maintenance cost, easy potential safety hazard and the like caused by leakage of the refrigerant, the embodiment monitors and feeds back a pulse signal for identifying the flow characteristics of the refrigerant in real time through a sensor (specifically, a refrigerant sensor), judges whether the refrigerant leaks according to the pulse signal, correspondingly generates a control strategy, adjusts the operation of the compressor, namely, when the refrigerant leaks, reduces the loss of a user by adjusting the operation frequency of the compressor to slow down the leakage speed of the refrigerant, and protects the safety of the user.
According to the method for detecting air conditioner refrigerant leakage provided by the embodiment, in the step of generating a control strategy for adjusting the operation of the compressor according to the pulse signal, the method specifically comprises the following steps:
determining that the refrigerant flow characteristic of the pulse signal identifier is refrigerant leakage, and acquiring a suspected refrigerant type of the leaked refrigerant;
and generating a control strategy for regulating the operation of the compressor according to the suspected refrigerant type.
Because the types of the refrigerants are more than one, when different types of refrigerants leak, the compressor is controlled to correspondingly execute different control strategies according to the types of the leaked refrigerants, and because the refrigerants only exist one type on one machine and cannot change the types, the types of the leaked suspected refrigerants are conveniently detected, and after the types of the refrigerants are determined, the operation frequency of the compressor is correspondingly controlled to be increased or decreased so as to slow down the leakage speed of the refrigerants.
By adopting the mode, the range of refrigerant leakage detection is increased, so that the refrigerant leakage detection is not limited to detection of a refrigerant, and an accurate and effective control strategy can be made according to the refrigerant type detection result.
According to the method for detecting leakage of air-conditioning refrigerant provided in this embodiment, in the step of obtaining the suspected refrigerant type of the leaked refrigerant, the method specifically includes:
acquiring type code information of a stored refrigerant type;
determining a comparison result according to the type code information and the suspected refrigerant type;
and determining that the suspected refrigerant type is the first refrigerant type or the second refrigerant type according to the comparison result.
The refrigerant types may be defined in advance in the control program, and different refrigerant types are corresponding to different type code information, for example, the following definitions are made: 01-R32, 02-R410A,03-R290, wherein 01, 02, 03 respectively represent different codes, R32, R410A, R290 respectively represent different types of refrigerants, and different codes represent different refrigerants, so that the type code information is conveniently called when the refrigerants leak, and the type of the refrigerants is identified.
In addition, the refrigerant may be classified into a first refrigerant type and a second refrigerant type according to the property of the refrigerant, for example, the refrigerant may be classified according to the operation result of the control compressor.
According to the method for detecting leakage of air-conditioning refrigerant provided in this embodiment, in the step of controlling operation of the compressor according to the control strategy, the method specifically includes:
determining the suspected refrigerant type as a first refrigerant type, and reducing the instant operation frequency of the compressor to a first preset frequency, wherein the first preset frequency is the operation frequency of the compressor corresponding to the refrigerant when leakage is slowed down;
determining the suspected refrigerant type as a second refrigerant type, and increasing the instant operation frequency of the compressor to a second preset frequency, wherein the second preset frequency is the operation frequency of the compressor corresponding to the refrigerant when leakage is slowed down.
The classification of the first refrigerant type and the second refrigerant type can be performed according to an adjustment strategy for controlling the operation of the compressor when the refrigerant leaks, for example, the refrigerant type for controlling the operation frequency of the compressor to be reduced when the refrigerant leaks is classified into the first refrigerant type, and similarly, the refrigerant type for controlling the operation frequency of the compressor to be increased when the refrigerant leaks is classified into the second refrigerant type, wherein the first refrigerant type comprises an R290 refrigerant, and the second refrigerant type comprises an R32 refrigerant and an R410A refrigerant.
According to the method for detecting air conditioner refrigerant leakage provided by the embodiment, in the step of generating the control strategy for adjusting the operation of the compressor according to the pulse signal, the method further comprises the following steps:
and determining that the refrigerant identified by the pulse signal leaks, and controlling an alarm system to give an alarm by the control panel.
When determining that the refrigerant leaks, on the one hand, the operation frequency of the compressor is controlled to reduce the refrigerant leakage speed, and on the other hand, the alarm system is controlled to give an alarm to remind a user that the refrigerant leaks, so that the user is reminded to timely make effective measures for preventing the refrigerant from leaking, and the safety risk and the cost loss caused by the refrigerant leakage are reduced.
The alarm system can adopt a voice broadcasting system to circularly broadcast voice until a user takes effective measures so that the refrigerant is not leaked any more; the alarm system can also adopt an alarm, pull out alarm sounds until the user adopts effective measures, so that the refrigerant is not leaked any more.
According to the method for detecting leakage of air-conditioning refrigerant provided in this embodiment, referring to fig. 3, in the step of generating a control strategy for adjusting operation of a compressor according to a pulse signal, the method specifically includes:
the pulse signal is the duration of high level and low level in one period;
acquiring a comparison result of high-level duration and low-level duration of the pulse signal in a previous period;
and determining the refrigerant flow characteristics of the pulse signal mark according to the comparison result.
The embodiment provides a method for determining whether leakage occurs to a refrigerant according to a pulse signal, namely judging through duration time of high and low levels of the pulse signal in one period, specifically, acquiring duration time of the high and low levels of the pulse signal in the period, comparing the pulse signal with the pulse signal in the previous period, if the duration time of the high and low levels changes, the air conditioner is abnormal in operation, and at the moment, the reason corresponding to the abnormality can be obtained according to the comparison result.
According to the method for detecting air conditioner refrigerant leakage provided by the embodiment, in the step of determining the refrigerant flow characteristics of the pulse signal mark according to the comparison result, the method specifically comprises the following steps:
determining that the high-level duration time of the pulse signal is increased to be a first preset time and the low-level duration time of the pulse signal is shortened to be a second preset time in comparison with the high-level duration time in the previous period, wherein the refrigerant flowing characteristic of the pulse signal mark is refrigerant leakage;
the first preset time is a high-level duration corresponding to refrigerant leakage, and the second preset time is a low-level duration corresponding to refrigerant leakage.
Referring to fig. 3, when the air conditioner is operating normally, the high level duration of the pulse signal in one period is 75ms, the low level duration is 300ms, and if the high level duration of the pulse signal in the current period is detected to change to 225ms (i.e. the first preset time), and the low level duration is 150ms (i.e. the second preset time), the refrigerant leakage is determined.
According to the method for detecting air conditioner refrigerant leakage provided by the embodiment, in the step of determining the refrigerant flow characteristics of the pulse signal mark according to the comparison result, the method further comprises the following steps:
determining that the high-level duration time of the pulse signal is increased to be third preset time and the low-level duration time of the pulse signal is shortened to be fourth preset time in comparison with the high-level duration time in the previous period, wherein the refrigerant flow characteristic of the pulse signal mark is a sensor fault;
the third preset time is a high-level duration corresponding to the sensor fault, and the fourth preset time is a low-level duration corresponding to the sensor fault.
Referring to fig. 3, when the air conditioner is operating normally, the high level duration of the pulse signal in one period is 75ms, the low level duration is 300ms, if the high level duration of the pulse signal in the current period is detected to change to 300ms (i.e. the third preset time), and the low level duration is 75ms (i.e. the fourth preset time), the sensor is determined to have a damage fault.
According to the detection method for air conditioner refrigerant leakage, the sensor is connected to the control board of the air conditioner, and is specifically connected to the main chip to form the refrigerant leakage detection circuit, the pulse signal for identifying the flow characteristic of the refrigerant is fed back to the main chip by utilizing the characteristics of the sensor, the main chip monitors the duration time of the high level and the low level of the pulse signal in real time, when the main chip detects that the pulse signal is kept high level for 225ms and kept low level for 150ms, the refrigerant leakage is determined, the operation frequency of the compressor is started to be controlled, the refrigerant leakage speed is reduced, and meanwhile, the machine gives out an alarm.
According to the embodiment, whether the refrigerant leaks or not is judged through the pulse signals sent to the main chip by the sensor, meanwhile, the operation of the compressor is controlled, the loss of a user is reduced, the user can be timely notified of faults, the user is reminded of dangers, and the safety of the user is protected.
According to an embodiment of the second aspect of the present invention, referring to fig. 4, there is provided a detection apparatus for detecting leakage of an air conditioner refrigerant, including:
the signal acquisition module is used for acquiring a pulse signal fed back by the sensor;
the strategy generation module is used for generating a control strategy for regulating the operation of the compressor according to the pulse signals;
and the control operation module is used for controlling the operation of the compressor according to the control strategy.
The detection device that the air conditioner refrigerant was revealed that provides through this embodiment can accurately detect in real time whether the refrigerant takes place to reveal, and its sensitivity is high, and the practicality is strong to in time adjust the operation of compressor when finding that the refrigerant is revealed, thereby make refrigerant leak the speed slowing down, avoid causing a series of problems such as air conditioner operating efficiency reduces, follow-up cost of maintenance is high, easily bring potential safety hazard etc..
According to an embodiment of a third aspect of the present invention, referring to fig. 5, there is provided an air conditioner including: a sensor and a control board;
the sensor is connected with the control board and is used for feeding back pulse signals for identifying the flow characteristics of the refrigerant to the control board;
the control board acquires a pulse signal fed back by the sensor; generating a control strategy for adjusting the operation of the compressor according to the pulse signals; and controlling operation of the compressor according to the control strategy.
Through the air conditioner that this embodiment provided, whether can accurately detect the refrigerant in real time take place to reveal, its sensitivity is high, and the practicality is strong to in time adjust the operation of compressor when finding that the refrigerant reveals, thereby make refrigerant reveal the speed slowing, avoid causing a series of problems such as air conditioner operating efficiency reduces, follow-up cost of maintenance is high, easily bring potential safety hazard etc..
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The method for detecting leakage of the refrigerant of the air conditioner is characterized by comprising the following steps of: the sensor is connected with the control board and is used for feeding back pulse signals for identifying the flow characteristics of the refrigerant to the control board;
the method comprises the following steps:
acquiring a pulse signal fed back by the sensor;
generating a control strategy for adjusting the operation of the compressor according to the pulse signal;
and controlling the operation of the compressor according to the control strategy.
2. The method for detecting leakage of air-conditioning refrigerant according to claim 1, wherein the step of generating a control strategy for adjusting operation of the compressor according to the pulse signal comprises:
determining that the refrigerant flowing characteristic of the pulse signal identifier is refrigerant leakage, and acquiring a suspected refrigerant type of the leaked refrigerant;
and generating a control strategy for adjusting the operation of the compressor according to the suspected refrigerant type.
3. The method for detecting leakage of air-conditioning refrigerant according to claim 2, wherein the step of obtaining the suspected refrigerant type of the leaked refrigerant specifically comprises:
acquiring type code information of a stored refrigerant type;
determining a comparison result according to the type code information and the suspected refrigerant type;
and determining that the suspected refrigerant type is a first refrigerant type or a second refrigerant type according to the comparison result.
4. The method for detecting leakage of air-conditioning refrigerant according to claim 3, wherein the step of controlling operation of the compressor according to the control strategy comprises:
determining the suspected refrigerant type as a first refrigerant type, and reducing the instant operation frequency of the compressor to a first preset frequency, wherein the first preset frequency is the operation frequency of the compressor corresponding to the refrigerant when leakage is slowed down;
determining the suspected refrigerant type as a second refrigerant type, and increasing the instant operation frequency of the compressor to a second preset frequency, wherein the second preset frequency is the operation frequency of the compressor corresponding to the refrigerant when leakage is slowed down.
5. The method for detecting leakage of air-conditioning refrigerant according to claim 1, wherein the step of generating a control strategy for adjusting operation of the compressor according to the pulse signal further comprises:
and determining that the refrigerant identified by the pulse signal leaks, and controlling an alarm system to give an alarm by the control panel.
6. The method for detecting leakage of air conditioner refrigerant according to any one of claims 1 to 5, wherein the step of generating a control strategy for adjusting operation of the compressor according to the pulse signal specifically comprises:
the pulse signal is the duration of high level and low level in one period;
acquiring a comparison result of high-level duration and low-level duration of the pulse signal in a previous period;
and determining the refrigerant flow characteristics of the pulse signal mark according to the comparison result.
7. The method for detecting air conditioner refrigerant leakage according to claim 6, wherein the step of determining the refrigerant flow characteristic of the pulse signal identifier according to the comparison result specifically comprises:
determining that the high-level duration time of the pulse signal is increased to be a first preset time and the low-level duration time of the pulse signal is shortened to be a second preset time in comparison with the high-level duration time in the previous period, wherein the refrigerant flow characteristic of the pulse signal mark is refrigerant leakage;
the first preset time is a high-level duration corresponding to refrigerant leakage, and the second preset time is a low-level duration corresponding to refrigerant leakage.
8. The method for detecting leakage of refrigerant in an air conditioner according to claim 6, wherein the step of determining the flow characteristics of the refrigerant identified by the pulse signal according to the comparison result further comprises:
determining that the high-level duration time of the pulse signal is increased to be third preset time and the low-level duration time of the pulse signal is shortened to be fourth preset time in comparison with the high-level duration time in the previous period, wherein the refrigerant flow characteristic of the pulse signal mark is the sensor fault;
the third preset time is a high-level duration corresponding to the sensor fault, and the fourth preset time is a low-level duration corresponding to the sensor fault.
9. The utility model provides a detection device that air conditioner refrigerant revealed which characterized in that includes:
the signal acquisition module is used for acquiring a pulse signal fed back by the sensor;
the strategy generation module is used for generating a control strategy for regulating the operation of the compressor according to the pulse signals;
and the control operation module is used for controlling the operation of the compressor according to the control strategy.
10. An air conditioner, comprising: a sensor and a control board;
the sensor is connected with the control board and is used for feeding back pulse signals for identifying the flow characteristics of the refrigerant to the control board;
the control board acquires a pulse signal fed back by the sensor; generating a control strategy for adjusting the operation of the compressor according to the pulse signal; and controlling operation of the compressor according to the control strategy.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11927377B2 (en) | 2014-09-26 | 2024-03-12 | Waterfurnace International, Inc. | Air conditioning system with vapor injection compressor |
| US11953239B2 (en) | 2018-08-29 | 2024-04-09 | Waterfurnace International, Inc. | Integrated demand water heating using a capacity modulated heat pump with desuperheater |
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2023
- 2023-03-17 CN CN202310263414.2A patent/CN116294062A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11927377B2 (en) | 2014-09-26 | 2024-03-12 | Waterfurnace International, Inc. | Air conditioning system with vapor injection compressor |
| US11953239B2 (en) | 2018-08-29 | 2024-04-09 | Waterfurnace International, Inc. | Integrated demand water heating using a capacity modulated heat pump with desuperheater |
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