CN103090504B - Air conditioner, and method and device for detecting air conditioner - Google Patents
Air conditioner, and method and device for detecting air conditioner Download PDFInfo
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- CN103090504B CN103090504B CN201110346559.6A CN201110346559A CN103090504B CN 103090504 B CN103090504 B CN 103090504B CN 201110346559 A CN201110346559 A CN 201110346559A CN 103090504 B CN103090504 B CN 103090504B
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- 238000001514 detection method Methods 0.000 claims description 65
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- 230000000694 effects Effects 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
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- 230000008020 evaporation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses an air conditioner, and a method and a device for detecting the air conditioner. The method for detecting the air conditioner includes the steps: detecting whether a compressor is started or not; judging whether the operating time of the compressor reaches the first preset time or not when starting and operating of the compressor are detected; detecting the temperature of an inner coil pipe and the indoor environmental temperature to obtain a difference value between the temperature of the inner coil pipe and the indoor environmental temperature when determining that the operating time of the compressor reaches the first preset time; detecting the temperature of an exhaust port of the compressor if the difference value is smaller than or equal to a preset temperature value; and judging whether the air conditioner fails or not according to the temperature of the exhaust port of the compressor. The abnormal condition of the air conditioner can be more accurately judged by the aid of the method.
Description
Technical field
The present invention relates to air-conditioner field, in particular to a kind of air-conditioner and detection method thereof and device.
Background technology
In the use procedure of air-conditioner, owing to not having urgent, pipeline vibration for a long time that weld can be caused to occur the reason such as micro-leakage or the micro-leakage in air-conditioner two organ pipe road itself between tube connector and valve, air-conditioner system generation secondary refrigerant leakage all can be caused further; If when refrigerant water content is too much, can there is the situation that ice is stifled in air-conditioner system in heating operations; If to forget in device process and open large minor valve or long-time use all can cause impurity in air-conditioner system to increase installing an air-conditioner, and then cause air-conditioner system dirty stifled.The situation of these air-conditioner system exceptions all can cause that complete machine freezes, heating effect is poor, and compressor also can be in the higher running status of temperature for a long time, reduces its electrical machine insulation and reliability, shortening motor service life, even damages compressor time serious.Air-conditioner of the prior art does not detect defencive function automatically, often judges whether air-conditioner system exists exception by user by artificial feel, and this determination methods exists erroneous judgement to a great extent.
For in correlation technique, not accurate enough problem is judged to air-conditioner abnormal conditions, not yet propose effective solution at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of air-conditioner and detection method thereof and device, judges not accurate enough problem to solve in correlation technique to air-conditioner abnormal conditions.
To achieve these goals, according to an aspect of the present invention, provide a kind of detection method of air-conditioner, comprising: detect compressor and whether start; When detecting that compressor start runs, judge whether the time of compressor operating reaches the first Preset Time; When determining that the time of compressor operating reaches the first Preset Time, detecting inner coil pipe temperature and indoor environment temperature, obtaining the difference of inner coil pipe temperature and indoor environment temperature; If difference is less than or equal to preset temperature value, then detect the temperature of the exhaust outlet of compressor; And judge whether air-conditioner exists fault according to the temperature of the exhaust outlet of compressor.
Further, the temperature detecting the exhaust outlet of compressor comprises: when determining that the time of compressor operating reaches the first Preset Time, the temperature of the exhaust outlet of continuous detection compressor, obtain the rate of temperature change of the exhaust outlet of compressor, judge whether air-conditioner exists fault and comprise according to the temperature of the exhaust outlet of compressor: the rate of temperature change of the exhaust outlet of compressor and default rate of change are contrasted to judge whether air-conditioner exists fault.
Further, when determining that the time of compressor operating reaches the first Preset Time, the temperature of the exhaust outlet of continuous detection compressor, the rate of temperature change obtaining the exhaust outlet of compressor comprises: continuous several times detects the temperature of exhaust outlet of compressor, obtains not temperature T in the same time
row 1, T
row 2and T
row 3, and by following formula determination rate of temperature change k:
Wherein, the time interval that continuous several times detects is the second Preset Time, the rate of temperature change of the exhaust outlet of compressor and default rate of change are contrasted judge whether air-conditioner exists fault and comprise: if rate of temperature change k is less than or equal to default rate of change, then determine that air-conditioner exists fault, wherein, when determining that air-conditioner exists fault, control air-conditioner out of service.
Further, said method also comprises: judge whether the time of compressor operating reaches the 3rd Preset Time, the 3rd Preset Time is greater than the first Preset Time; After determining that the time of compressor operating reaches the 3rd Preset Time, continuous several times detects inner coil pipe temperature and indoor environment temperature, obtains the difference of inner coil pipe temperature and indoor environment temperature; Difference and preset temperature value are carried out contrast to judge whether air-conditioner exists fault.
Further, after determining that the time of compressor operating reaches the 3rd Preset Time, continuous several times detects inner coil pipe temperature and indoor environment temperature, the difference obtaining inner coil pipe temperature and indoor environment temperature comprises: each detection in detecting for continuous several times, all by the difference T of following formula determination inner coil pipe temperature and indoor environment temperature:
T=|T
pipe-T
ring|
Wherein, T
pipefor inner coil pipe temperature, T
ringfor indoor environment temperature, the time interval that continuous several times detects is the second Preset Time, difference and preset temperature value are carried out contrast to judge whether air-conditioner exists fault and comprise: if difference T is all less than or equal to preset temperature value, then detect the temperature of the exhaust outlet of compressor; And judge whether air-conditioner exists fault according to the temperature of the exhaust outlet of compressor.
Further, if difference T is all less than or equal to preset temperature value, then the temperature detecting the exhaust outlet of compressor comprises: if difference T is all less than or equal to preset temperature value, then preserve the last detection time of inner coil pipe temperature and indoor environment temperature; And with last detection time for starting point, the temperature of the exhaust outlet of continuous detection compressor, obtain the rate of temperature change of the exhaust outlet of compressor, judge whether air-conditioner exists fault and comprise according to the temperature of the exhaust outlet of compressor: the rate of temperature change of the exhaust outlet of compressor and default rate of change are contrasted to judge whether air-conditioner exists fault.
Further, with last detection time for starting point, detect the temperature of the exhaust outlet of compressor continuously, the rate of temperature change obtaining the exhaust outlet of compressor comprises: with last detection time for starting point, continuous several times detects the temperature of exhaust outlet of compressor, obtains not detected temperatures T in the same time
row 1, T
row 2and T
row 3, and by following formula determination rate of temperature change k:
Wherein, the time interval of continuous detection is the second Preset Time, the rate of temperature change of the exhaust outlet of compressor and default rate of change are contrasted judge whether air-conditioner exists fault and comprise: if rate of temperature change k is less than or equal to default rate of change, then determine that air-conditioner exists fault, wherein, when determining that air-conditioner exists fault, control air-conditioner out of service.
To achieve these goals, according to a further aspect in the invention, providing a kind of checkout gear of air-conditioner, comprising: first detection module, whether starting for detecting compressor; First judge module, for when detecting that compressor start runs, judges whether the time of compressor operating reaches the first Preset Time; Second detection module, for when determining that the time of compressor operating reaches the first Preset Time, detecting inner coil pipe temperature and indoor environment temperature, obtaining the difference of inner coil pipe temperature and indoor environment temperature; Whether the first comparison module, be less than or equal to preset temperature for comparing difference; 3rd detection module, for when difference is less than or equal to preset temperature value, detects the temperature of the exhaust outlet of compressor; And second judge module, the temperature for the exhaust outlet according to compressor judges whether air-conditioner exists fault.
Further, 3rd detection module is used for when determining that the time of compressor operating reaches the first Preset Time, the temperature of the exhaust outlet of continuous detection compressor, obtain the rate of temperature change of the exhaust outlet of compressor, the second judge module is used for the rate of temperature change of the exhaust outlet of compressor and default rate of change to contrast to judge whether air-conditioner exists fault.
Further, first judge module is for judging whether the time of compressor operating reaches the 3rd Preset Time, 3rd Preset Time is greater than the first Preset Time, second detection module is used for after determining that the time of compressor operating reaches the 3rd Preset Time, continuous several times detects inner coil pipe temperature and indoor environment temperature, obtain the difference of inner coil pipe temperature and indoor environment temperature, the first comparison module is used for difference and preset temperature value to carry out contrasting to judge whether air-conditioner exists fault.
To achieve these goals, according to a further aspect in the invention, provide a kind of air-conditioner, this air-conditioner comprises the checkout gear of any one air-conditioner provided by the invention.
By the present invention, detection compressor is adopted whether to start; When detecting that compressor start runs, judge whether the time of compressor operating reaches the first Preset Time; When determining that the time of compressor operating reaches the first Preset Time, detecting inner coil pipe temperature and indoor environment temperature, obtaining the difference of inner coil pipe temperature and indoor environment temperature; If difference is less than or equal to preset temperature value, then detect the temperature of the exhaust outlet of compressor; And judge whether air-conditioner exists fault according to the temperature of the exhaust outlet of compressor, solve in correlation technique and not accurate enough problem is judged to air-conditioner abnormal conditions, and then reach the effect more accurately judging air-conditioner abnormal conditions.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the detection method flow chart according to the embodiment of the present invention;
Fig. 2 is the detection method flow chart according to first preferred embodiment of the invention;
Fig. 3 is the detection method flow chart according to second preferred embodiment of the invention; And
Fig. 4 is the checkout gear schematic diagram according to the embodiment of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 1 is the detection method flow chart according to the embodiment of the present invention, and as shown in Figure 1, the method comprises following step:
S102: detect compressor and whether start;
S104: when detecting that compressor start runs, judges whether the time of compressor operating reaches the first Preset Time;
S106: when determining that the time of compressor operating reaches the first Preset Time, detects inner coil pipe temperature and indoor environment temperature, obtains the difference of inner coil pipe temperature and indoor environment temperature;
S108: if difference is less than or equal to preset temperature value, then detect the temperature of the exhaust outlet of compressor;
S110: judge whether air-conditioner exists fault according to the temperature of the exhaust outlet of compressor.
From above description, can find out, in the embodiment of the present invention when whether there are abnormal conditions to air-conditioner start operation and judging, adopt and judge whether air-conditioner exists exception by the difference comparing inner coil pipe temperature and indoor environment temperature, and confirm whether air-conditioner exists exception by the temperature being vented the exhaust outlet of compressor that temperature-sensitive bag detects, achieve and accurately judge that air-conditioner start runs the effect that whether there are abnormal conditions.
Preferably, the temperature detecting the exhaust outlet of compressor comprises: when determining that the time of compressor operating reaches the first Preset Time, the temperature of the exhaust outlet of continuous detection compressor, obtain the rate of temperature change of the exhaust outlet of compressor, judge whether air-conditioner exists fault and comprise according to the temperature of the exhaust outlet of compressor: the rate of temperature change of the exhaust outlet of compressor and default rate of change are contrasted to judge whether air-conditioner exists fault.
When determining that the time of compressor operating reaches the first Preset Time, detect continuously the temperature of the exhaust outlet of compressor, the rate of temperature change obtaining the exhaust outlet of compressor comprises: continuous several times detects the temperature of exhaust outlet of compressor, obtains not temperature T in the same time
row 1, T
row 2and T
row 3, and by following formula determination rate of temperature change k:
Wherein, the time interval that continuous several times detects is the second Preset Time, the rate of temperature change of the exhaust outlet of compressor and default rate of change are contrasted judge whether air-conditioner exists fault and comprise: if rate of temperature change k is less than or equal to default rate of change, then determine that air-conditioner exists fault, wherein, when determining that air-conditioner exists fault, control air-conditioner out of service.
By detecting the temperature of the exhaust outlet of compressor continuously, the rate of temperature change of exhaust outlet of compressor is obtained with this, and the rate of temperature change of the exhaust outlet of compressor and default rate of change are carried out contrast and run whether there is fault to judge that air-conditioner is started shooting, make that the judgement that whether there are abnormal conditions is run to air-conditioner start more accurate.
Preferably, judge whether the time of compressor operating reaches the 3rd Preset Time, the 3rd Preset Time is greater than the first Preset Time; After determining that the time of compressor operating reaches the 3rd Preset Time, continuous several times detects inner coil pipe temperature and indoor environment temperature, obtains the difference of inner coil pipe temperature and indoor environment temperature; Difference and preset temperature value are carried out contrast to judge whether air-conditioner exists fault.
By carrying out the detection of inner coil pipe temperature and indoor environment temperature after reach the 3rd Preset Time at compressor operating time, obtain the difference of inner coil pipe temperature and indoor environment temperature; Difference and preset temperature value are contrasted, achieves and accurately judge whether air-conditioner exists the effect of fault in air-conditioner running.
Preferably, after determining that the time of compressor operating reaches the 3rd Preset Time, continuous several times detects inner coil pipe temperature and indoor environment temperature, the difference obtaining inner coil pipe temperature and indoor environment temperature comprises: each detection in detecting for continuous several times, all by the difference T of following formula determination inner coil pipe temperature and indoor environment temperature:
T=|T
pipe-T
ring|
Wherein, T
pipefor inner coil pipe temperature, T
ringfor indoor environment temperature, the time interval that continuous several times detects is the second Preset Time, difference and preset temperature value are carried out contrast to judge whether air-conditioner exists fault and comprise: if difference T is all less than or equal to preset temperature value, then detect the temperature of the exhaust outlet of compressor; And judge whether air-conditioner exists fault according to the temperature of the exhaust outlet of compressor.
If difference T is all less than or equal to preset temperature value, then the temperature detecting the exhaust outlet of compressor comprises: if difference T is all less than or equal to preset temperature value, then preserve the last detection time of inner coil pipe temperature and indoor environment temperature; And with last detection time for starting point, the temperature of the exhaust outlet of continuous detection compressor, obtain the rate of temperature change of the exhaust outlet of compressor, judge whether air-conditioner exists fault and comprise according to the temperature of the exhaust outlet of compressor: the rate of temperature change of the exhaust outlet of compressor and default rate of change are contrasted to judge whether air-conditioner exists fault.
With last detection time for starting point, the temperature of the exhaust outlet of continuous detection compressor, the rate of temperature change obtaining the exhaust outlet of compressor comprises: with last detection time for starting point, and continuous several times detects the temperature of exhaust outlet of compressor, obtains not detected temperatures T in the same time
row 1, T
row 2and T
row 3, and by following formula determination rate of temperature change k:
Wherein, the time interval of continuous detection is the second Preset Time, the rate of temperature change of the exhaust outlet of compressor and default rate of change are contrasted judge whether air-conditioner exists fault and comprise: if rate of temperature change k is less than or equal to default rate of change, then determine that air-conditioner exists fault, wherein, when determining that air-conditioner exists fault, control air-conditioner out of service.
By detecting the temperature of the exhaust outlet of compressor continuously, the rate of temperature change of exhaust outlet of compressor is obtained with this, and the rate of temperature change of the exhaust outlet of compressor and default rate of change are carried out contrast to judge whether air-conditioner exists fault in running, make the judgement that whether there are abnormal conditions in running air-conditioner more accurate.
Fig. 2 is the detection method flow chart according to first preferred embodiment of the invention, as shown in Figure 2, system anomaly detection after start and judgement: power on and after starting shooting, select the cooling and warming pattern of air-conditioning, compressor starts is run, now single-chip microcomputer also starts timing, when single-chip microcomputer timing was to the 6th minute, if the absolute value delta T of temperature gap that the temperature that detects of inner coil pipe temperature sensor and environment temperature sensor detect
1be less than or equal to 3 DEG C, then enter system exception judgment model (otherwise air-conditioning continues to run), exhaust temperature-sensitive bag detects the temperature of the exhaust outlet of compressor, if the 6th, 7, the 8 minute exhaust temperature-sensitive bag rate of temperature change that exhaust temperature-sensitive bag temperature sensor detects
then be judged as system exception, single-chip microcomputer sends instruction makes air-conditioning out of service, wherein, and T
pipe 6, T
pipe 7, T
pipe 8represent the temperature of the compressor air-discharging temperature-sensitive bag detection collected for the 6th minute, the 7th minute, the 8th minute respectively, inner coil pipe temperature refer to after indoor machine evaporation refrigerant inflow port separatory with flow export liquid collecting before somewhere pipe temperature, the monitoring point of pipe temperature temperature sensor is generally the stage casing of refrigerant tubing.
In operation of air conditioner process, the temperature of inner coil pipe and the temperature gap of environment reflect that it freezes and heating effect, NMO (normal moveout) value is larger, only have its difference when system exception just can be very little, make its cooling or heating effect poor, system exception is owing to can be just there is exception in stopping process, boot system is in abnormal state (as secondary refrigerant leakage again, valve forget open), also can be in running, occurred that system exception is (as secondary refrigerant leakage, ice blocks up, the dirty situation such as stifled), prove that the temperature of inner coil pipe and the temperature gap of environment are 3 DEG C and judge that system exception is comparatively reasonable through experiment, and the rate of temperature change that exhaust gas temperature sensor during system exception detects proves to confirm further the state of system exception through experiment.
Fig. 3 is the detection method flow chart according to second preferred embodiment of the invention, as shown in Figure 3, system exception in running judges: the cooling and warming pattern selecting air-conditioning after the start that powers on, compressor starts is run, now single-chip microcomputer also starts timing, after single-chip microcomputer accumulation timing is more than or equal to 30, if pipe warming thermometer bulb acquisition testing is to the absolute value delta T of the difference of inner coil pipe temperature and indoor environment temperature in continuous three minutes
1≤ 3 DEG C of (Δ T
1=| T
pipe 1-T
ring temperature|), namely enter system exception judgment model, exhaust temperature-sensitive bag detects the temperature of the exhaust outlet of compressor, if be vented the rate of temperature change of the exhaust outlet of compressor that temperature-sensitive bag temperature sensor detects
then be judged as scarce fluorine, now air-conditioning is out of service, wherein, and T
pipe 1, T
ring temperaturerepresent inner coil pipe temperature and indoor environment temperature that compressor operating collects more than any n-th after 30min, n+1, n+2 for continuous 3 minutes, T
pipe 3, T
pipe 4, T
pipe 5represent n-th+2, n+3, n+4 minute inner compressor exhaust temperature-sensitive bag detects the temperature collecting the exhaust outlet of compressor.
Whether Fig. 4 is the checkout gear schematic diagram according to the embodiment of the present invention, and as shown in Figure 4, the checkout gear of the embodiment of the present invention, comprising: first detection module, start for detecting compressor; First judge module, for when detecting that compressor start runs, judges whether the time of compressor operating reaches the first Preset Time; Second detection module, for when determining that the time of compressor operating reaches the first Preset Time, detecting inner coil pipe temperature and indoor environment temperature, obtaining the difference of inner coil pipe temperature and indoor environment temperature; Whether the first comparison module, be less than or equal to preset temperature for comparing difference; 3rd detection module, for when difference is less than or equal to preset temperature value, detects the temperature of the exhaust outlet of compressor; And second judge module, the temperature for the exhaust outlet according to compressor judges whether air-conditioner exists fault.
In embodiments of the present invention, 3rd detection module is used for when determining that the time of compressor operating reaches the first Preset Time, the temperature of the exhaust outlet of continuous detection compressor, obtain the rate of temperature change of the exhaust outlet of compressor, the second judge module is used for the rate of temperature change of the exhaust outlet of compressor and default rate of change to contrast to judge whether air-conditioner exists fault.
The temperature of the exhaust outlet of compressor is detected continuously by the 3rd detection module, the rate of temperature change of exhaust outlet of compressor is obtained with this, and the rate of temperature change of the exhaust outlet of compressor and default rate of change carried out contrast by the second judge module and judge that air-conditioner is started shooting and run whether there is fault, make that the judgement that whether there are abnormal conditions is run to air-conditioner start more accurate.
Can also control module being comprised in the embodiment of the present invention, for when determining that air-conditioner exists fault, controlling air-conditioner out of service; And alarm module, for when determining that air-conditioner exists fault, carry out alarm.
When determining that air-conditioner exists fault, air-conditioner is controlled out of service by control module, reach the effect improving air-conditioner service life, and when determining that air-conditioner exists fault, carry out alarm by alarm module, reach user can accurately be learnt there is the effect of fault in air-conditioner.
Preferably, first judge module is for judging whether the time of compressor operating reaches the 3rd Preset Time, 3rd Preset Time is greater than the first Preset Time, second detection module is used for after determining that the time of compressor operating reaches the 3rd Preset Time, continuous several times detects inner coil pipe temperature and indoor environment temperature, obtain the difference of inner coil pipe temperature and indoor environment temperature, the first comparison module is used for difference and preset temperature value to carry out contrasting to judge whether air-conditioner exists fault.
The embodiment of the present invention additionally provides a kind of air-conditioner, and this air-conditioner comprises the checkout gear of any one air-conditioner that the embodiment of the present invention provides.
By carrying out the detection of inner coil pipe temperature and indoor environment temperature after reach the 3rd Preset Time at compressor operating time, obtain the difference of inner coil pipe temperature and indoor environment temperature; Difference and preset temperature value are contrasted, achieves and accurately judge whether air-conditioner exists the effect of fault in air-conditioner running.
As can be seen from the above description, when stifled, the dirty abnormal conditions such as stifled of system secondary refrigerant leakage and ice, air-conditioner is controlled by control module out of service; And alarm module carries out alarm, automatically prompting user, avoids user's erroneous judgement to cause the long-time hot operation of air-conditioning to reduce its service life, reaches and accurately judge air-conditioner abnormal conditions, improves the effect in air-conditioner service life.
In checkout gear of the present invention; there are the sensor detecting inner coil pipe temperature, the sensor detecting environment temperature, detect the temperature sensor at compressor exhaust pipe place; each temperature sensor is connected with the I/O mouth of single-chip microcomputer; temperature sensor is made up of a thermistor and a conventional, electric-resistance; the magnitude of voltage being changed input single-chip microcomputer by the change in resistance of thermistor carries out temperature survey; warning device is also connected with the I/O mouth of single-chip microcomputer; make buzzer work by sending the signal of telecommunication, this just achieves the action of system exception defencive function at hardware aspect.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a detection method for air-conditioner, is characterized in that, comprising:
Detect compressor whether to start;
When detecting that described compressor start runs, judge whether the time of described compressor operating reaches the first Preset Time;
When determining that the time of described compressor operating reaches described first Preset Time, detecting inner coil pipe temperature and indoor environment temperature, obtaining the difference of described inner coil pipe temperature and described indoor environment temperature;
If described difference is less than or equal to preset temperature value, then detect the temperature of the exhaust outlet of described compressor; And
Judge whether described air-conditioner exists fault according to the temperature of the exhaust outlet of described compressor,
The temperature detecting the exhaust outlet of described compressor comprises: when determining that the time of described compressor operating reaches described first Preset Time, detects the temperature of the exhaust outlet of described compressor continuously, obtains the rate of temperature change of the exhaust outlet of described compressor,
Judge whether described air-conditioner exists fault and comprise according to the temperature of the exhaust outlet of described compressor: the rate of temperature change of the exhaust outlet of described compressor and default rate of change are contrasted to judge whether described air-conditioner exists fault,
When determining that the time of described compressor operating reaches described first Preset Time, the temperature of the exhaust outlet of the described compressor of continuous detection, the rate of temperature change obtaining the exhaust outlet of described compressor comprises: continuous several times detects the temperature of described exhaust outlet of compressor, obtains not temperature T in the same time
row 1, T
row 2and T
row 3, and determine described rate of temperature change k by following formula:
Wherein, the time interval that described continuous several times detects is the second Preset Time,
The rate of temperature change of the exhaust outlet of described compressor and default rate of change are contrasted judge whether described air-conditioner exists fault and comprise: if described rate of temperature change k is less than or equal to described default rate of change, then determine that described air-conditioner exists fault,
Wherein, when determining that described air-conditioner exists fault, control described air-conditioner out of service.
2. detection method according to claim 1, is characterized in that, described method also comprises:
Judge whether the time of described compressor operating reaches the 3rd Preset Time, described 3rd Preset Time is greater than described first Preset Time;
After determining that the time of described compressor operating reaches described 3rd Preset Time, continuous several times detects described inner coil pipe temperature and described indoor environment temperature, obtains the difference of described inner coil pipe temperature and described indoor environment temperature;
Described difference and described preset temperature value are carried out contrast to judge whether described air-conditioner exists fault.
3. detection method according to claim 2, is characterized in that,
After determining that the time of described compressor operating reaches described 3rd Preset Time, continuous several times detects described inner coil pipe temperature and described indoor environment temperature, the difference obtaining described inner coil pipe temperature and described indoor environment temperature comprises: each detection in detecting for described continuous several times, is all determined the difference T of described inner coil pipe temperature and described indoor environment temperature by following formula:
T=|T
pipe-T
ring|
Wherein, T
pipefor described inner coil pipe temperature, T
ringfor described indoor environment temperature, the time interval that described continuous several times detects is described second Preset Time,
Described difference and described preset temperature value are carried out contrast to judge whether described air-conditioner exists fault and comprise:
If described difference T is all less than or equal to described preset temperature value, then detect the temperature of the exhaust outlet of described compressor; And
Judge whether described air-conditioner exists fault according to the temperature of the exhaust outlet of described compressor.
4. detection method according to claim 3, is characterized in that,
If described difference T is all less than or equal to described preset temperature value, then the temperature detecting the exhaust outlet of described compressor comprises:
If described difference T is all less than or equal to described preset temperature value, then preserve the last detection time of described inner coil pipe temperature and described indoor environment temperature; And
With described last detection time for starting point, detect the temperature of the exhaust outlet of compressor continuously, obtain the rate of temperature change of the exhaust outlet of described compressor,
Judge whether described air-conditioner exists fault and comprise according to the temperature of the exhaust outlet of described compressor: the rate of temperature change of the exhaust outlet of described compressor and default rate of change are contrasted to judge whether described air-conditioner exists fault.
5. detection method according to claim 4, is characterized in that
With described last detection time for starting point, the temperature of the exhaust outlet of continuous detection compressor, the rate of temperature change obtaining the exhaust outlet of described compressor comprises: with described last detection time for starting point, continuous several times detects the temperature of described exhaust outlet of compressor, obtains not detected temperatures T in the same time
row 1, T
row 2and T
row 3, and determine described rate of temperature change k by following formula:
Wherein, the time interval of described continuous detection is the second Preset Time,
The rate of temperature change of the exhaust outlet of described compressor and default rate of change are contrasted judge whether described air-conditioner exists fault and comprise: if described rate of temperature change k is less than or equal to described default rate of change, then determine that described air-conditioner exists fault,
Wherein, when determining that described air-conditioner exists fault, control described air-conditioner out of service.
6. a checkout gear for air-conditioner, is characterized in that, comprising:
Whether first detection module, start for detecting compressor;
First judge module, for when detecting that described compressor start runs, judges whether the time of described compressor operating reaches the first Preset Time;
Second detection module, for when determining that the time of described compressor operating reaches described first Preset Time, detecting inner coil pipe temperature and indoor environment temperature, obtaining the difference of described inner coil pipe temperature and described indoor environment temperature;
Whether the first comparison module, be less than or equal to preset temperature for more described difference;
3rd detection module, for when described difference is less than or equal to described preset temperature value, detects the temperature of the exhaust outlet of described compressor; And
Second judge module, the temperature for the exhaust outlet according to described compressor judges whether described air-conditioner exists fault,
Described 3rd detection module is used for when determining that the time of described compressor operating reaches described first Preset Time, the temperature of the exhaust outlet of the described compressor of continuous detection, obtain the rate of temperature change of the exhaust outlet of described compressor, comprise: continuous several times detects the temperature of described exhaust outlet of compressor, obtain not temperature T in the same time
row 1, T
row 2and T
row 3, and determine described rate of temperature change k by following formula:
Wherein, the time interval that described continuous several times detects is the second Preset Time,
Described second judge module is used for the rate of temperature change of the exhaust outlet of described compressor and default rate of change to contrast to judge whether described air-conditioner exists fault, comprise: if described rate of temperature change k is less than or equal to described default rate of change, then determine that described air-conditioner exists fault
Wherein, when determining that described air-conditioner exists fault, control described air-conditioner out of service.
7. checkout gear according to claim 6, is characterized in that,
Described first judge module is for judging whether the time of described compressor operating reaches the 3rd Preset Time, and described 3rd Preset Time is greater than described first Preset Time,
Described second detection module is used for after determining that the time of described compressor operating reaches described 3rd Preset Time, and continuous several times detects described inner coil pipe temperature and described indoor environment temperature, obtains the difference of described inner coil pipe temperature and described indoor environment temperature,
First comparison module is used for described difference and described preset temperature value to carry out contrasting to judge whether described air-conditioner exists fault.
8. an air-conditioner, is characterized in that, comprises the checkout gear described in claim 6 or 7.
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