CN109945395B - Detection method, air conditioning system and medium - Google Patents
Detection method, air conditioning system and medium Download PDFInfo
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- CN109945395B CN109945395B CN201910217046.1A CN201910217046A CN109945395B CN 109945395 B CN109945395 B CN 109945395B CN 201910217046 A CN201910217046 A CN 201910217046A CN 109945395 B CN109945395 B CN 109945395B
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Abstract
The application provides a detection method and an air conditioning system. The detection method comprises the following steps: under the condition that the air-conditioning system operates in a preset mode, acquiring the current temperature of an intelligent power module of the air-conditioning system, the rising rate of the temperature of an outdoor heat exchanger of the air-conditioning system and the rising rate of the temperature of an exhaust port of a compressor; judging whether the current temperature of the intelligent power module is greater than a first threshold value; judging whether the rising rate of the temperature of the outdoor heat exchanger is greater than a second threshold value or not; judging whether the rising rate of the temperature of the exhaust port of the compressor is greater than a third threshold value; and determining that the fan of the air conditioning system is abnormal under the conditions that the current temperature of the intelligent power module is greater than a first threshold value, the rising rate of the temperature of the outdoor heat exchanger is greater than a second threshold value, and the rising rate of the temperature of the air outlet is greater than a third threshold value. According to the detection method, the air conditioning system and the medium, the condition that the fan of the air conditioning system is abnormal can be accurately judged.
Description
Technical Field
The application relates to the technical field of refrigeration, in particular to a detection method, an air conditioning system and a medium.
Background
An air conditioning system generally includes an indoor unit and an outdoor unit, and the indoor unit is connected to a liquid pipe through an air pipe to form a circulation loop. During the refrigeration operation of the air conditioning system, the outdoor fan enables the condenser and air to generate strong convection heat exchange, so that the heat exchange capacity of the outdoor heat exchanger is greatly enhanced.
Generally, the outdoor fan includes an ac fan and a dc fan, however, the ac fan has no feedback signal, and cannot detect a fan fault, and cannot generate an abnormal feedback signal, and although the dc fan has feedback information, if conditions such as reverse installation of a wind wheel or breakage of a fan blade occur, although the outdoor fan is still operating, it is difficult to detect fault information. The above-mentioned fault condition may result in the entire air conditioning system not having the outdoor fan to do heat exchange. When the outdoor fan is abnormal, the compressor is continuously operated, which may cause damage to the compressor or malfunction of the air conditioning system.
Disclosure of Invention
In view of the above, the present application provides a detection method and an air conditioning system.
The detection method of the embodiment of the application is used for the air conditioning system, and comprises the following steps:
under the condition that the air-conditioning system operates in a preset mode, acquiring the current temperature of an intelligent power module of the air-conditioning system, the rising rate of the temperature of an outdoor heat exchanger of the air-conditioning system and the rising rate of the temperature of an exhaust port of a compressor;
judging whether the current temperature of the intelligent power module is greater than a first threshold value;
judging whether the rising rate of the temperature of the outdoor heat exchanger is greater than a second threshold value or not;
judging whether the rising rate of the temperature of the exhaust port of the compressor is greater than a third threshold value; and
determining that a fan of the air conditioning system is abnormal if the current temperature of the smart power module is greater than the first threshold, the rate of rise of the temperature of the outdoor heat exchanger is greater than the second threshold, and the rate of rise of the temperature of the exhaust port is greater than a third threshold.
The air conditioning system of the embodiment of the present application includes:
the outdoor unit comprises a shell, and an outdoor fan and an outdoor heat exchanger which are arranged in the shell;
a smart power module disposed within the housing; and
the control device is connected with the intelligent power module and used for acquiring the current temperature of the intelligent power module of the air conditioning system, the rising rate of the temperature of the outdoor heat exchanger of the air conditioning system and the rising rate of the temperature of the exhaust port of the compressor under the condition that the air conditioning system operates in a preset mode; the intelligent power module is used for judging whether the current temperature of the intelligent power module is greater than a first threshold value, judging whether the rising rate of the temperature of the outdoor heat exchanger is greater than a second threshold value, and judging whether the rising rate of the temperature of the exhaust port of the compressor is greater than a third threshold value; and the intelligent power module is used for determining that the outdoor fan is abnormal under the conditions that the current temperature of the intelligent power module is greater than the first threshold value, the rising rate of the temperature of the outdoor heat exchanger is greater than the second threshold value and the rising rate of the temperature of the exhaust opening is greater than a third threshold value.
One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the detection methods described above.
In the detection method, the air conditioning system and the medium of the embodiment of the application, when the current temperature of the intelligent power module is greater than the first threshold value, the rising rate of the temperature of the outdoor heat exchanger is greater than the second threshold value and the rising rate of the temperature of the exhaust port is greater than the third threshold value, the outdoor fan is determined to be abnormal, and the abnormal condition of the fan of the air conditioning system can be accurately judged, so that the fan fault information can be effectively detected, and the follow-up maintenance and other work can be facilitated.
Advantages of additional aspects of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an air conditioning system according to an embodiment of the present application;
fig. 2 is a schematic cross-sectional view of an indoor unit according to an embodiment of the present application;
fig. 3 is a schematic structural view of an outdoor unit according to an embodiment of the present invention;
fig. 4-7 are schematic flow charts of the detection method according to the embodiment of the present application.
Description of the main elements of the drawings:
the air conditioner comprises an air conditioning system 1000, an indoor unit 100, a shell 10, an air duct 12, an air inlet 14, an air outlet 16, a filter screen 20, an air deflector 30, an indoor fan 40 and an indoor heat exchanger 50;
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the embodiments of the present application, and are not to be construed as limiting the embodiments of the present application.
In the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, an embodiment of the present application discloses an air conditioning system 1000, where the air conditioning system 1000 includes an indoor unit 100 and an outdoor unit 200. It is understood that the indoor unit 100 is intended to be installed indoors. The outdoor unit 200 is installed outdoors. The indoor unit 100 may be connected to the outdoor unit 200 by cables, refrigerant pipes, or the like. The indoor unit 100 may be a cabinet or an on-hook. The present application will be further described with the indoor unit 100 as an on-hook example.
Referring to fig. 2, the indoor unit 100 includes a casing 10, a filter screen 20, an air deflector 30, an indoor fan 40, and an indoor heat exchanger 50. The filter screen 20 and the air deflector 30 are both connected to the housing 10. The indoor fan 40 is disposed inside the casing 10.
Specifically, the housing 10 is formed with a duct 12. The air duct 12 includes an inlet 14 and an outlet 16 communicating with the inlet 14.
A screen 20 is disposed within the air chute 12. Specifically, the screen 20 is disposed at the intake port 14 or the exhaust port 16. In this embodiment, the filter screen 20 is disposed at the air inlet 14.
The screen 20 is used to screen out contaminants from at least a portion of the airflow passing through the duct 12. Contaminants are for example gases and/or solids. Gaseous pollutants are for example sulphur dioxide, nitrogen oxides etc. solid pollutants are for example dust, inhalable particles, hair etc.
The air deflector 30 is mounted at the air outlet 16. The air deflector 30 can adjust the air outlet angle of the air outlet 16, so that the indoor unit 100 can deliver the air to different indoor positions, and the air delivery range of the indoor unit 100 can be adjusted.
The indoor fan 40 is disposed in the duct 12. When the indoor fan 40 rotates, air may be sucked from the air inlet 14, compressed to form an air flow, and then sent to the indoor through the air outlet 16. Therefore, the indoor fan 40 may accelerate the heat exchange rate of the indoor heat exchanger 50, thereby improving the heat exchange efficiency of the indoor heat exchanger 50.
Referring to fig. 3, the outdoor unit 200 includes a casing 210, an outdoor fan 220, an outdoor heat exchanger 230, a control device 240, an Intelligent Power Module 250 (IPM), a radiator 260, and a compressor 270. The outdoor fan 220, the outdoor heat exchanger 230, the control device 240, the smart power module 250, the radiator 260, and the compressor 270 are all disposed within the case 210.
The outdoor fan 220 is disposed at one side of the outdoor heat exchanger 230, and the outdoor fan 220 is used for rapidly dissipating heat of the outdoor heat exchanger 230 during operation to increase a heat exchange rate of the outdoor heat exchanger 230 with the surrounding environment, thereby increasing heat exchange efficiency of the outdoor heat exchanger 230.
The outdoor fan 220 may be a variable frequency fan. Or, the motor of the outdoor fan 220 is a variable frequency motor. Of course, the outdoor fan 220 may also be a fixed frequency fan.
The outdoor heat exchanger 230 may be a plate type heat exchanger. The outdoor heat exchanger 230 may be made of various materials such as copper and aluminum. It can be understood that after the refrigerant passes through the outdoor heat exchanger 230, the refrigerant exchanges heat with the surrounding environment through the outdoor heat exchanger 230.
The control device 240 may be provided at the heat sink 260. For example, the control device 240 may be connected to the heat sink 260 by welding. The control device 240 is used to control the operation of the air conditioning system 1000. For example, the control device 240 may control an operation time, an operation current, and the like of the compressor 270. For another example, the control device 240 may control the rotation speed of the outdoor fan 220 by controlling the current of the outdoor fan 220.
The Control device 240 includes a Control circuit board, and it is understood that the Control circuit board includes a controller, for example, a Micro Control Unit (MCU), and the controller can issue instructions for controlling operations of the compressor 270, the indoor fan 40, the outdoor fan 220, and other components.
In other embodiments, the control device 240 may be provided in the indoor unit 100.
The smart power module 250 may be disposed at the heat sink 260. For example, the smart power module 250 may be connected to the heat sink 260 by means of soldering.
The smart power module 250 is a power driver that integrates power electronics discrete devices and integrated circuit technology, and the smart power module 250 includes a power switching device and a high voltage driving circuit, and is provided with fault detection circuits for overvoltage, overcurrent, and overheat.
The intelligent power module 250 has a logic input terminal receiving the control signal from the control device 240 and an output terminal driving the compressor 270 or subsequent circuits to operate and sending the detected system status signal back to the control device 240. Compared with the traditional discrete scheme, the intelligent power module 250 has the advantages of high integration level, high reliability, self-checking, circuit protection and the like, is particularly suitable for a frequency converter of a driving motor and various inverter power supplies, and is an ideal power electronic device for variable-frequency speed regulation, metallurgical machinery, electric traction, servo driving and variable-frequency household appliances.
The heat sink 260 may dissipate heat for the control device 240 and the smart power module 250 to prevent the control device 240 and the smart power module 240 from being too hot to operate properly. The heat sink 260 may be made of a metal material having high thermal conductivity such as aluminum and copper, or may be made of a non-metal material.
Referring to fig. 4, an embodiment of the present application further discloses a detection method, where the detection method is used in an air conditioning system 1000, and the detection method includes:
step S10, acquiring a current temperature of the smart power module 250 of the air conditioning system 1000, an increasing rate H1 of the temperature of the outdoor heat exchanger 230 of the air conditioning system 1000, and an increasing rate H2 of the temperature of the discharge port of the compressor 270, when the air conditioning system 1000 operates in the preset mode;
step S20, determining whether the current temperature of the smart power module 250 is greater than a first threshold;
step S30, determining whether the rate of increase H1 of the temperature of the outdoor heat exchanger 230 is greater than a second threshold;
step S40, determining whether the rising rate H2 of the discharge port temperature of the compressor 270 is greater than a third threshold; and
in step S50, it is determined that the fan of the air conditioning system 1000 is abnormal in the case where the current temperature of the smart power module 250 is greater than the first threshold, the rate of increase H1 of the temperature of the outdoor heat exchanger 230 is greater than the second threshold, and the rate of increase H2 of the temperature of the air outlet is greater than the third threshold.
The detection method may be implemented by the air conditioning system according to the above-described embodiment of the present invention, and specifically, the air conditioning system includes a control device 240, where the control device 240 is configured to obtain a current temperature of the smart power module 250 of the air conditioning system 1000, an increase rate H1 of a temperature of the outdoor heat exchanger 230 of the air conditioning system 1000, and an increase rate H2 of a temperature of an exhaust port of the compressor 270, when the air conditioning system 1000 operates in a preset mode; and for determining whether the current temperature of the smart power module 250 is greater than a first threshold.
The control device 240 is further configured to determine whether a rising rate H1 of the temperature of the outdoor heat exchanger 230 is greater than a second threshold, and determine whether a rising rate H2 of the temperature of the discharge port of the compressor 270 is greater than a third threshold; and for determining that the outdoor fan 220 is abnormal in case that the current temperature of the smart power module 250 is greater than the first threshold, the rising rate H1 of the temperature of the outdoor heat exchanger 230 is greater than the second threshold, and the rising rate H2 of the outlet temperature is greater than the third threshold.
In an embodiment of the present invention, the control device 240 includes a control circuit board. In other embodiments, the control device 240 may be another circuit board, a main control board, a computer board, etc. of the air conditioning system 1000, which may be in wired or wireless communication with the control device 240.
It is understood that after the air conditioning system 1000 is operated, components on the control device 240 generate heat, for example, a controller on the control device 240 generates a large amount of heat. The control device 240 may generate the heat that can be dissipated through the heat sink 260, and the outdoor fan 220 may dissipate the heat at the heat sink 260 speed to prevent the heat sink 260 from being overheated.
Therefore, if the outdoor fan 220 is abnormal and the compressor 270 continues to operate during the operation of the air conditioning system 1000, the heat sink 260 does not have air flow, and the heat dissipation effect is greatly reduced. At this time, the temperature of the smart power module 250 connected to the heat sink 260 is increased, so that it is determined that the outdoor fan 220 is abnormal by detecting a high temperature state of the smart power module 250.
However, if the heat sink 260 and the smart power module 250 are in poor contact, even if the outdoor fan 220 is normal, the temperature of the smart power module 250 may be too high, and at this time, whether the heat sink 260 and the smart power module 250 are in poor contact or the outdoor fan 220 is abnormal may be determined by detecting whether the temperature of the outdoor heat exchanger 230 and the temperature of the exhaust port of the compressor 270 are normal.
After the air conditioning system 1000 is operated, when the outdoor fan 220 is normal, the temperature of the outdoor heat exchanger 230 and the temperature of the discharge port of the compressor 270 only slowly rise, but not quickly rise. Therefore, it is determined that the outdoor fan 220 is abnormal as long as the temperature of the outdoor heat exchanger 230 and the temperature of the discharge port of the compressor 270 are rapidly increased and the smart power module 250 exceeds the protection value in the case where the air conditioning system 1000 is operated.
Therefore, in the detection method and the air conditioning system 1000 according to the embodiment of the present application, when the current temperature of the intelligent power module 250 is greater than the first threshold, the rising rate of the temperature of the heat sink 260 is greater than the second threshold, and the rising rate H2 of the temperature of the air outlet is greater than the third threshold, it is determined that the outdoor fan 220 is abnormal, and the condition that the outdoor fan 220 of the air conditioning system 1000 is abnormal can be accurately determined, so that the fault information of the outdoor fan 220 can be effectively detected, and the work such as subsequent maintenance is facilitated.
Specifically, in step S10, the preset mode includes a cooling mode. In the cooling mode, the indoor heat exchanger 50 of the air conditioning system 1000 cools, and the outdoor heat exchanger 230 of the air conditioning system 1000 heats. At this time, the outdoor heat exchanger 230 is gradually raised while the air conditioning system 1000 is operated until heat generation and heat dissipation of the outdoor heat exchanger 230 are substantially balanced.
In the present embodiment, the cooling mode includes all cases where the indoor heat exchanger 50 cools and the outdoor heat exchanger 230 heats.
The temperature of the smart power module 250 may be acquired by a temperature sensor provided on the smart power module 250. The temperature of the outdoor heat exchanger 230 may be acquired by a temperature sensor provided on the outdoor heat exchanger 230. The temperature sensor on the outdoor heat exchanger 230 is, for example, a bulb. The bulb may be disposed at a refrigerant inlet of the outdoor heat exchanger 230.
The discharge port temperature of the compressor 270 may be obtained by a temperature sensor provided at the discharge port of the compressor 270. For example, a temperature sensor is installed on the discharge pipe of the compressor 270, and the temperature information obtained by the temperature sensor may represent the discharge port temperature of the compressor 270.
In step S50, in one example, the first threshold is greater than or equal to 70 degrees (° c), e.g., the first threshold is 70 degrees, 71 degrees, 72 degrees, etc. Under normal conditions, the temperature of the smart power module 250 is less than 70 degrees via the heat dissipation effect of the heat sink 260.
If the smart power module 250 is in poor contact with the heat sink 260 or the heat dissipation of the heat sink 260 is poor, the temperature of the smart power module is greater than 70 degrees, and therefore, by setting the first threshold to be greater than or equal to 70 degrees, the poor contact between the smart power module and the heat sink 260 or the poor heat dissipation of the heat sink 260 can be effectively detected.
The second threshold value is, for example, 20 degrees/minute (. degree.C./min), and the third threshold value is, for example, 20 degrees/minute (. degree.C./min). As above, if the outdoor fan 220 malfunctions, the temperature of the discharge port of the compressor 270 and the temperature of the outdoor heat exchanger 230 may increase too fast.
Accordingly, in one example, when the current temperature of the smart power module 250 is greater than 70 degrees, the rising rate H1 of the temperature of the outdoor heat exchanger 230 is greater than 20 degrees/min, and the rising rate H2 of the discharge outlet temperature of the compressor 270 is greater than 20 degrees/min, then it is determined that the outdoor fan 220 is abnormal.
It should be noted that, in the embodiment of the present application, the steps S20, S30 and S40 are performed in sequence, and in other embodiments, the order of performing the steps S20, S30 and S40 may be adjusted as needed.
For example, S40 may be performed first, then S20 may be performed, and finally S30 may be performed. Of course, steps S20, S30, and S40 may be performed in synchronization. Or any two of the steps S20, S30, and S40 are performed synchronously before another step is performed.
Referring to fig. 5, in some embodiments, the rate of rise H1 of the temperature of the outdoor heat exchanger 230 is obtained according to the following steps:
a step S11 of acquiring the temperature of the outdoor heat exchanger 230 as a first temperature Te1 in a case where the air conditioning system 1000 is stopped;
a step S12 of acquiring the current temperature of the outdoor heat exchanger 230 as a second temperature Te2 in a case where the air conditioning system 1000 is operated;
in step S13, a rising rate H1 of the temperature of the outdoor heat exchanger 230 is determined according to a ratio of a difference between the first temperature Te1 and the second temperature Te2 to the on-time period t of the air conditioning system 1000 (H1 — Te1-Te 2/t).
In certain embodiments, steps S11-S13 may be performed by the control device 240. In other words, the control device 240 is configured to obtain the temperature of the outdoor heat exchanger 230 as the first temperature Te1 in the case where the air conditioning system 1000 is stopped; and for acquiring the current temperature of the outdoor heat exchanger 230 as the second temperature Te2 in the case where the air conditioning system 1000 is operating; and a rate H1 for determining the rising rate of the temperature of the outdoor heat exchanger 230 according to the ratio of the difference between the first temperature Te1 and the second temperature Te2 to the on-time period t of the air conditioning system 1000.
In step S11, in the case where the air conditioning system 1000 is stopped, the compressor 270 is stopped, the temperature of the outdoor heat exchanger 230 may be acquired once every predetermined time, and then the temperature acquired closest to the time of starting may be taken as the first temperature Te 1.
In step S12, in the case where the air conditioning system 1000 is operated, the compressor 270 is operated, and the temperature of the outdoor heat exchanger 230 may be acquired as the second temperature Te2 once every predetermined time, it being understood that the second temperature Te2 is greater than the first temperature Te1(Te2 > Te 1).
In step S13, a rate H1 of increase in the temperature of the outdoor heat exchanger 230 may be calculated according to a formula.
It should be noted that the starting time t of the air conditioning system 1000 is a time period during which the air conditioning system 1000 starts to operate when the air conditioning system 1000 starts to time.
Referring to fig. 6, in some embodiments, the rate of rise H2 in the discharge temperature of the compressor 270 is obtained according to the following steps:
step S14, acquiring the discharge port temperature of the compressor 270 as a third temperature Te3 in case the air conditioning system 1000 is stopped;
step S15, acquiring the current discharge port temperature of the compressor 270 as a fourth temperature Te4 in the case where the air conditioning system 1000 is operating;
in step S16, the rising rate H2 of the exhaust port temperature is determined according to the ratio of the difference between the third temperature Te3 and the fourth temperature Te4 to the on-time t of the air conditioning system 1000 (H2 is Te3-Te 4/t).
In certain embodiments, steps S14-S16 may be performed by the control device 240. Alternatively, the control device 240 is configured to obtain the discharge port temperature of the compressor 270 in the case where the air conditioning system 1000 is stopped as the third temperature Te 3; and a fourth temperature Te4 for acquiring the current discharge port temperature of the compressor 270 in the case where the air conditioning system 1000 is operating; and determining the rising rate H2 of the temperature of the air outlet according to the ratio of the difference value of the third temperature Te3 and the fourth temperature Te4 to the starting-up time t of the air conditioning system 1000.
In this manner, the rate of rise H2 in the discharge port temperature of the compressor 270 can be effectively obtained.
Specifically, in step S14, in the case where the air conditioning system 1000 is stopped, the compressor 270 is stopped, the temperature of the exhaust port of the compressor 270 may be acquired once every predetermined time, and then the temperature acquired closest to the time of starting may be taken as the third temperature Te 3.
In step S15, in the case where the air conditioning system 1000 is operated, the compressor 270 starts to operate, and the discharge port temperature of the compressor 270 may be acquired as the fourth temperature Te4 once every predetermined time, it being understood that the fourth temperature Te4 is greater than the third temperature Te3(Te4 > Te 3).
In step S16, the rising rate H2 of the discharge port temperature of the compressor 270 may be calculated according to the formula.
Referring to fig. 7, in some embodiments, after step S50, the detecting method further includes:
step S60, controlling the air conditioning system 1000 to stop; and/or
And step S70, controlling the air conditioning system 1000 to send alarm information.
That is, after determining that the outdoor fan 220 of the air conditioning system 1000 is abnormal, the air conditioning system 1000 may be controlled to stop, or an alarm message may be sent, or the air conditioning system 1000 may be controlled to stop and send an alarm message at the same time.
In certain embodiments, step 60 and step S80 may be performed by control device 240. Alternatively, the control device 240 is used to control the air conditioning system 1000 to stop and/or control the air conditioning system 1000 to send alarm information.
Thus, the air conditioning system 1000 is controlled in time when the outdoor fan 220 is abnormal, and the damage of the refrigeration system of the air conditioning system 1000 can be avoided. It should be noted that, when both the step S60 and the step S70 are executed, the step S60 and the step S70 may be executed successively or simultaneously. For example, step S60 is executed first, and then step S70 is executed; for another example, step S70 is executed first, and then step S60 is executed.
Specifically, the alarm information may be sound information or light information. For example, when the outdoor fan 220 is abnormal, a buzzer of the air conditioning system 1000 makes a "buzzing" sound. For another example, after the outdoor fan 220 is abnormal, the display screen of the indoor unit 100 displays a fault code, so that the maintenance personnel can accurately and timely remove the fault.
The present application also provides a computer-readable storage medium. The computer readable storage medium includes a computer program for use in conjunction with an air supply system. The computer program can be executed by a processor to implement the air blowing method of any one of the above embodiments.
For example, the computer program may be executable by a processor to perform the steps of:
under the condition that the air-conditioning system operates in a preset mode, acquiring the current temperature of an intelligent power module of the air-conditioning system, the rising rate of the temperature of an outdoor heat exchanger of the air-conditioning system and the rising rate of the temperature of an exhaust port of a compressor;
judging whether the current temperature of the intelligent power module is greater than a first threshold value;
judging whether the rising rate of the temperature of the outdoor heat exchanger is greater than a second threshold value or not;
judging whether the rising rate of the temperature of the exhaust port of the compressor is greater than a third threshold value; and
and determining that the outdoor fan of the air conditioning system is abnormal under the conditions that the current temperature of the intelligent power module is greater than a first threshold value, the rising rate H1 of the temperature of the outdoor heat exchanger is greater than a second threshold value and the rising rate of the temperature of the exhaust port is greater than a third threshold value.
In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. A detection method for an air conditioning system is characterized by comprising the following steps:
under the condition that the air-conditioning system operates in a preset mode, acquiring the current temperature of an intelligent power module of the air-conditioning system, the rising rate of the temperature of an outdoor heat exchanger of the air-conditioning system and the rising rate of the temperature of an exhaust port of a compressor;
judging whether the current temperature of the intelligent power module is greater than a first threshold value;
judging whether the rising rate of the temperature of the outdoor heat exchanger is greater than a second threshold value or not;
judging whether the rising rate of the temperature of the exhaust port of the compressor is greater than a third threshold value; and
determining that an outdoor fan of the air conditioning system is abnormal if the current temperature of the smart power module is greater than the first threshold, the rate of rise of the temperature of the outdoor heat exchanger is greater than the second threshold, and the rate of rise of the temperature of the exhaust port is greater than the third threshold.
2. The detection method as set forth in claim 1, wherein the rate of rise of the temperature of the outdoor heat exchanger is obtained according to the steps of:
acquiring the temperature of the outdoor heat exchanger as a first temperature under the condition that the air conditioning system is stopped;
acquiring the current temperature of the outdoor heat exchanger as a second temperature under the condition that the air conditioning system is operated;
and determining the rising rate of the temperature of the outdoor heat exchanger according to the ratio of the difference value of the first temperature and the second temperature to the starting-up time of the air conditioning system.
3. The method of claim 1, wherein the rate of rise of the temperature of the discharge port of the compressor is obtained according to the steps of:
acquiring a discharge port temperature of the compressor as a third temperature in a case where the air conditioning system is stopped;
acquiring the current exhaust port temperature of the compressor as a fourth temperature under the condition that the air conditioning system is operated;
and determining the rising rate of the temperature of the exhaust port according to the ratio of the difference value of the third temperature and the fourth temperature to the starting-up time of the air conditioning system.
4. The detection method of claim 1, wherein the predetermined mode comprises a cooling mode.
5. The detection method according to claim 1, wherein in case of abnormality of an outdoor fan of the air conditioning system, the detection method further comprises:
controlling the air conditioning system to stop; and/or
And controlling the air conditioning system to send alarm information.
6. An air conditioning system, comprising:
the outdoor unit comprises a shell, and an outdoor fan, an outdoor heat exchanger and an intelligent power module which are all arranged in the shell; and
the control device is connected with the intelligent power module and used for acquiring the current temperature of the intelligent power module of the air conditioning system, the rising rate of the temperature of the outdoor heat exchanger of the air conditioning system and the rising rate of the temperature of the exhaust port of the compressor under the condition that the air conditioning system operates in a preset mode; the intelligent power module is used for judging whether the current temperature of the intelligent power module is greater than a first threshold value, judging whether the rising rate of the temperature of the outdoor heat exchanger is greater than a second threshold value, and judging whether the rising rate of the temperature of the exhaust port of the compressor is greater than a third threshold value; and the intelligent power module is used for determining that the outdoor fan is abnormal under the conditions that the current temperature of the intelligent power module is greater than the first threshold value, the rising rate of the temperature of the outdoor heat exchanger is greater than the second threshold value and the rising rate of the temperature of the exhaust opening is greater than a third threshold value.
7. The air conditioning system of claim 6, wherein the outdoor unit further comprises a heat sink disposed in the casing, and the smart power module is disposed at the heat sink.
8. The air conditioning system as claimed in claim 6, wherein the control means is configured to acquire the temperature of the outdoor heat exchanger as the first temperature in a case where the air conditioning system is stopped; the air conditioner is used for acquiring the current temperature of the outdoor heat exchanger as a second temperature under the condition that the air conditioning system is operated; and the temperature rise rate of the outdoor heat exchanger is determined according to the ratio of the difference value of the first temperature and the second temperature to the starting-up time of the air conditioning system.
9. The air conditioning system as claimed in claim 6, wherein the control means is configured to acquire a discharge port temperature of the compressor as a third temperature in a case where the air conditioning system is stopped; the air conditioner is used for acquiring the current air outlet temperature of the compressor as a fourth temperature under the condition that the air conditioning system is operated; and the temperature rise rate of the air outlet is determined according to the ratio of the difference value of the third temperature and the fourth temperature to the starting-up time of the air conditioning system.
10. The air conditioning system as claimed in claim 6, wherein the control means is for controlling the air conditioning system to be stopped in case of abnormality of an outdoor fan of the air conditioning system; and/or controlling the air conditioning system to send alarm information.
11. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the detection method of any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN112306583B (en) * | 2019-08-20 | 2023-08-22 | 无锡小天鹅电器有限公司 | Method and device for detecting air duct filter screen of drying device |
| CN110425711B (en) * | 2019-09-05 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Temperature control method and device of intelligent power module and air conditioner |
| CN111059697B (en) * | 2019-12-31 | 2021-09-03 | 海信（山东）空调有限公司 | Filter screen filth blockage detection method and device and air conditioner |
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| CN112782219A (en) * | 2020-12-29 | 2021-05-11 | 广东普门生物医疗科技有限公司 | Method and device for detecting ventilation performance of ventilation pipe, storage medium and warming blanket |
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| JP5452342B2 (en) * | 2010-04-26 | 2014-03-26 | 日立アプライアンス株式会社 | Outdoor unit, indoor unit and air conditioner |
| CN202883418U (en) * | 2012-09-24 | 2013-04-17 | 宁波奥克斯空调有限公司 | Failure detection device for outdoor fan of air conditioner |
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| CN107957117B (en) * | 2017-10-31 | 2020-04-14 | 青岛海尔空调器有限总公司 | Method and device for controlling rotating speed of outdoor fan of air conditioner |
| CN107990485B (en) * | 2017-11-29 | 2020-01-07 | 珠海格力电器股份有限公司 | Air conditioner fault identification method, device and system |
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