CN104896669A - Air conditioner and method for protecting and controlling same - Google Patents
Air conditioner and method for protecting and controlling same Download PDFInfo
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- CN104896669A CN104896669A CN201510304874.0A CN201510304874A CN104896669A CN 104896669 A CN104896669 A CN 104896669A CN 201510304874 A CN201510304874 A CN 201510304874A CN 104896669 A CN104896669 A CN 104896669A
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- conditioner
- temperature
- air
- heat exchanger
- described air
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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
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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
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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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
- F24F11/65—Electronic processing for selecting an operating mode
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a method for protecting and controlling the same. The method for protecting and controlling the air conditioner includes steps of detecting the exhaust temperature T<p> of a compressor of the air conditioner; judging the air conditioner according to the exhaust temperature T<p> and determining that an exhaust temperature sensor of the air conditioner is loosened when the air conditioner meets preset conditions; protecting and controlling the air conditioner according to the exhaust temperature T<p> and current running modes of the air conditioner when the judged exhaust temperature sensor is loosened. The exhaust temperature sensor is used for detecting the exhaust temperature T<p>. The air conditioner and the method have the advantages that whether the exhaust temperature sensor is loosened or not can be accurately judged by the aid of the method, the air conditioner can be protected and controlled when the judged exhaust temperature sensor is loosened, and accordingly reliable running of the air conditioner can be guaranteed.
Description
Technical field
The present invention relates to air-conditioner technical field, particularly a kind of protecting control method of air-conditioner and a kind of air-conditioner.
Background technology
Temperature sensor is prerequisite and the guarantee, particularly exhaust gas temperature sensor that air-conditioner realizes intelligent operation, and its delivery temperature detected directly affects the accurate control of electric expansion valve in air-conditioner.If exhaust sensor occurs getting loose when transporting or air-conditioner manufactures, then can cause air-conditioner operation exception.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is that proposing one accurately can judge whether exhaust gas temperature sensor gets loose, and when judging that exhaust gas temperature sensor gets loose, air-conditioner is carried out to the protecting control method of the air-conditioner of protecting control.
Another object of the present invention is to propose a kind of air-conditioner.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of protecting control method of air-conditioner, comprises the following steps: the delivery temperature Tp detecting compressor in described air-conditioner; When judging that described air-conditioner meets pre-conditioned according to described delivery temperature Tp, judge that the exhaust gas temperature sensor detecting described delivery temperature Tp in described air-conditioner gets loose; When judging that described exhaust gas temperature sensor gets loose, according to described delivery temperature Tp and described air-conditioner current residing operational mode, protecting control is carried out to described air-conditioner.
According to the protecting control method of the air-conditioner of the embodiment of the present invention; the delivery temperature Tp of compressor in real-time detection air-conditioner; judge whether air-conditioner meets according to delivery temperature Tp pre-conditioned; if air-conditioner meets pre-conditioned; then judge that the exhaust gas temperature sensor detecting delivery temperature Tp in air-conditioner gets loose; and when judging that exhaust gas temperature sensor gets loose, according to delivery temperature Tp and air-conditioner current residing operational mode, protecting control is carried out to air-conditioner.Therefore; the protecting control method of the air-conditioner of the embodiment of the present invention accurately can judge whether exhaust gas temperature sensor gets loose; and when judging that exhaust gas temperature sensor gets loose, protecting control is carried out to air-conditioner; effectively prevent air-conditioner from causing because exhaust gas temperature sensor gets loose operation not normal, thus ensure air-conditioner reliability service.
According to one embodiment of present invention, when described delivery temperature Tp meets the following conditions, judge that described air-conditioner meets described pre-conditioned: after (1) described compressor normally runs the first Preset Time, described delivery temperature Tp is less than or equal to outdoor environment temperature T4 and the first temperature threshold sum; (2) when described air-conditioner runs in a chiller mode, described delivery temperature Tp is less than or equal to the medium temperature T3 of outdoor heat exchanger; (3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
According to another embodiment of the invention, when described delivery temperature Tp meets the following conditions, judge that described air-conditioner meets described pre-conditioned: after (1) described compressor normally runs the first Preset Time, described delivery temperature Tp is less than or equal to outdoor environment temperature T4 and the first temperature threshold sum; (2) when described air-conditioner runs with heating mode, described delivery temperature Tp is less than or equal to the medium temperature T2 of indoor heat exchanger; (3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
According to one embodiment of present invention, when judging that described exhaust gas temperature sensor gets loose, the fault type of described air-conditioner is also shown.
According to one embodiment of present invention, according to described delivery temperature Tp and described air-conditioner current residing operational mode, protecting control is carried out to described air-conditioner, specifically comprise: when the current residing operational mode of described air-conditioner be refrigeration mode or dehumidification mode time, wherein, if the medium temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature, then the electric expansion valve controlled in described air-conditioner runs with the first aperture; If the medium temperature T3 of outdoor heat exchanger is greater than described first preset temperature and is less than the second preset temperature, then the electric expansion valve controlled in described air-conditioner runs with the second aperture, and described second aperture is greater than described first aperture; If the medium temperature T3 of outdoor heat exchanger is more than or equal to described second preset temperature, then the electric expansion valve controlled in described air-conditioner runs with maximum opening.
According to another embodiment of the invention, according to described delivery temperature Tp and described air-conditioner current residing operational mode, protecting control is carried out to described air-conditioner, specifically comprise: when the current residing operational mode of described air-conditioner is heating mode, wherein, if the medium temperature T2 of indoor heat exchanger is less than or equal to the 3rd preset temperature, then the electric expansion valve controlled in described air-conditioner runs with the 3rd aperture; If the medium temperature T2 of indoor heat exchanger is greater than described 3rd preset temperature and is less than the 4th preset temperature, then the electric expansion valve controlled in described air-conditioner runs with the 4th aperture, and described 4th aperture is greater than described 3rd aperture; If the medium temperature T2 of indoor heat exchanger is more than or equal to described 4th preset temperature, then the electric expansion valve controlled in described air-conditioner runs with maximum opening.
According to one embodiment of present invention, when described air-conditioner meet below arbitrary condition time, described air-conditioner exits protecting control: (1) described air-conditioner in a chiller mode or dehumidification mode run, and described delivery temperature Tp is more than or equal to medium temperature T3 and the second temperature threshold sum of outdoor heat exchanger; (2) described air-conditioner runs with heating mode, and described delivery temperature Tp is more than or equal to medium temperature T2 and the 3rd temperature threshold sum of indoor heat exchanger; (3) described delivery temperature Tp is more than or equal to default temperature protection threshold value.
For achieving the above object, the present invention on the other hand embodiment proposes a kind of air-conditioner, comprising: compressor; Outdoor heat exchanger; Indoor heat exchanger; Exhaust gas temperature sensor, for detecting the delivery temperature Tp of described compressor; First temperature sensor, for detecting outdoor environment temperature T4; Second temperature sensor, for detecting the medium temperature T3 of described outdoor heat exchanger; Three-temperature sensor, for detecting the medium temperature T2 of described indoor heat exchanger; Control module; during for judging that described air-conditioner meets pre-conditioned according to described delivery temperature Tp; judge that described exhaust gas temperature sensor gets loose; and when judging that described exhaust gas temperature sensor gets loose, described control module carries out protecting control according to described delivery temperature Tp and the current residing operational mode of described air-conditioner to described air-conditioner.
According to the air-conditioner of the embodiment of the present invention; when control module judges that air-conditioner meets pre-conditioned according to delivery temperature Tp; judge that exhaust gas temperature sensor gets loose; and when judging that exhaust gas temperature sensor gets loose, control module carries out protecting control according to delivery temperature Tp and the current residing operational mode of air-conditioner to air-conditioner.Therefore; the air-conditioner of the embodiment of the present invention accurately can judge whether exhaust gas temperature sensor gets loose; and automatically carry out protecting control when judging that exhaust gas temperature sensor gets loose, effectively prevent from causing because exhaust gas temperature sensor gets loose operation not normal, thus ensure reliability service.
According to one embodiment of present invention, when described delivery temperature Tp meets the following conditions, it is described pre-conditioned that described control module judges that described air-conditioner meets: after (1) described compressor normally runs the first Preset Time, described delivery temperature Tp is less than or equal to outdoor environment temperature T4 and the first temperature threshold sum; (2) when described air-conditioner runs in a chiller mode, described delivery temperature Tp is less than or equal to the medium temperature T3 of outdoor heat exchanger; (3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
According to another embodiment of the invention, when described delivery temperature Tp meets the following conditions, it is described pre-conditioned that described control module judges that described air-conditioner meets: after (1) described compressor normally runs the first Preset Time, described delivery temperature Tp is less than or equal to outdoor environment temperature T4 and the first temperature threshold sum; (2) when described air-conditioner runs with heating mode, described delivery temperature Tp is less than or equal to the medium temperature T2 of indoor heat exchanger; (3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
According to one embodiment of present invention, above-mentioned air-conditioner also comprises display module, and described display module is used for judging that described exhaust gas temperature sensor shows the fault type of described air-conditioner when getting loose in described control module.
According to one embodiment of present invention, when the current residing operational mode of described air-conditioner be refrigeration mode or dehumidification mode time, wherein, if the medium temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with the first aperture; If the medium temperature T3 of outdoor heat exchanger is greater than described first preset temperature and is less than the second preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with the second aperture, and described second aperture is greater than described first aperture; If the medium temperature T3 of outdoor heat exchanger is more than or equal to described second preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with maximum opening.
According to another embodiment of the invention, when the current residing operational mode of described air-conditioner is heating mode, wherein, if the medium temperature T2 of indoor heat exchanger is less than or equal to the 3rd preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with the 3rd aperture; If the medium temperature T2 of indoor heat exchanger is greater than described 3rd preset temperature and is less than the 4th preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with the 4th aperture, and described 4th aperture is greater than described 3rd aperture; If the medium temperature T2 of indoor heat exchanger is more than or equal to described 4th preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with maximum opening.
According to one embodiment of present invention, when described air-conditioner meet below arbitrary condition time, described air-conditioner exits protecting control: (1) described air-conditioner in a chiller mode or dehumidification mode run, and described delivery temperature Tp is more than or equal to medium temperature T3 and the second temperature threshold sum of outdoor heat exchanger; (2) described air-conditioner runs with heating mode, and described delivery temperature Tp is more than or equal to medium temperature T2 and the 3rd temperature threshold sum of indoor heat exchanger; (3) described delivery temperature Tp is more than or equal to default temperature protection threshold value.
Accompanying drawing explanation
Fig. 1 is the flow chart of protecting control method of the air-conditioner proposed according to the embodiment of the present invention.
Fig. 2 is the block diagram of the air-conditioner according to the embodiment of the present invention.
Reference numeral: compressor 10, outdoor heat exchanger 20, indoor heat exchanger 30, exhaust gas temperature sensor 40, first temperature sensor 50, second temperature sensor 60, three-temperature sensor 70, control module 80 and display module 90.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Protecting control method and the air-conditioner of the air-conditioner proposed according to the embodiment of the present invention are described with reference to the accompanying drawings.
Fig. 1 is the flow chart of protecting control method of the air-conditioner proposed according to the embodiment of the present invention.As shown in Figure 1, the protecting control method of this air-conditioner comprises the following steps:
S1, detects the delivery temperature Tp of compressor in air-conditioner.
Such as, the delivery temperature Tp of compressor can be detected by exhaust gas temperature sensor.
S2, when judging that air-conditioner meets pre-conditioned according to delivery temperature Tp, judges that the exhaust gas temperature sensor detecting delivery temperature Tp in air-conditioner gets loose.
According to one embodiment of present invention, when delivery temperature Tp meets the following conditions, judge that air-conditioner meets pre-conditioned: (1) compressor normally runs the first Preset Time final vacuum temperature Tp and is less than or equal to outdoor environment temperature T4 and the first temperature threshold sum; (2) when air-conditioner runs in a chiller mode, delivery temperature Tp is less than or equal to the medium temperature T3 of outdoor heat exchanger; (3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
Wherein, the first Preset Time, the second Preset Time and the first temperature threshold can be demarcated according to actual conditions, and such as, the first Preset Time can be 10min, and the second Preset Time can be 5min, and the first temperature threshold can be 2 DEG C.
According to another embodiment of the invention, when delivery temperature Tp meets the following conditions, judge that air-conditioner meets pre-conditioned: (1) compressor normally runs the first Preset Time final vacuum temperature Tp and is less than or equal to outdoor environment temperature T4 and the first temperature threshold sum; (2) when air-conditioner runs with heating mode, delivery temperature Tp is less than or equal to the medium temperature T2 of indoor heat exchanger; (3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
Briefly, when delivery temperature Tp simultaneously meet below three conditions time, can judge that the exhaust gas temperature sensor detecting delivery temperature Tp in air-conditioner gets loose.
Condition one, at compressor normal boot-strap and run the first Preset Time as 10min after, the delivery temperature Tp≤T4+2 DEG C of compressor in the air-conditioner of detection.
Condition two, when air-conditioner is in refrigeration mode, the delivery temperature Tp≤T3 of compressor in the air-conditioner of detection; And when air-conditioner is in heating mode, the delivery temperature Tp≤T2 of compressor in the air-conditioner of detection.
Condition three, satisfy condition one and condition two simultaneously, and continue more than 5min.
S3, when judging that exhaust gas temperature sensor gets loose, carries out protecting control according to delivery temperature Tp and the current residing operational mode of air-conditioner to air-conditioner.
According to one embodiment of present invention, when judging that exhaust gas temperature sensor gets loose, the fault type of air-conditioner is also shown.Such as, fault type can represent with " EE ".
According to one embodiment of present invention, according to delivery temperature Tp and air-conditioner current residing operational mode, protecting control is carried out to air-conditioner, specifically comprise: when the current residing operational mode of air-conditioner be refrigeration mode or dehumidification mode time, wherein, if the medium temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature, then the electric expansion valve controlled in air-conditioner runs with the first aperture; If the medium temperature T3 of outdoor heat exchanger is greater than the first preset temperature and be less than the second preset temperature, then the electric expansion valve controlled in air-conditioner runs with the second aperture, and the second aperture is greater than the first aperture; If the medium temperature T3 of outdoor heat exchanger is more than or equal to the second preset temperature, then the electric expansion valve controlled in air-conditioner runs with maximum opening.
Wherein, first preset temperature, the second preset temperature, the first aperture and the second aperture can be demarcated according to actual conditions, such as, first preset temperature can be 45 DEG C, second preset temperature can be 50 DEG C, first aperture can be able to be PDC+100 for PDC (the basic valve that freezes step) the+50, the second aperture.
According to another embodiment of the invention, according to delivery temperature Tp and air-conditioner current residing operational mode, protecting control is carried out to air-conditioner, specifically comprise: when the current residing operational mode of air-conditioner is heating mode, wherein, if the medium temperature T2 of indoor heat exchanger is less than or equal to the 3rd preset temperature, then the electric expansion valve controlled in air-conditioner runs with the 3rd aperture; If the medium temperature T2 of indoor heat exchanger is greater than the 3rd preset temperature and be less than the 4th preset temperature, then the electric expansion valve controlled in air-conditioner runs with the 4th aperture, and the 4th aperture is greater than the 3rd aperture; If the medium temperature T2 of indoor heat exchanger is more than or equal to the 4th preset temperature, then the electric expansion valve controlled in air-conditioner runs with maximum opening.
Wherein, 3rd preset temperature, the 4th preset temperature, the 3rd aperture and the 4th aperture can be demarcated according to actual conditions, such as, 3rd preset temperature can be 40 DEG C, 4th preset temperature can be 50 DEG C, 3rd aperture can be able to be PDH for PDH (heating basic valve step) the-50, four aperture.
Specifically, when judging that exhaust gas temperature sensor gets loose, indoor set shows fault type " EE ", to remind user by display module.Meanwhile, air conditioner without shutting runs, and namely carries out protecting control according to the medium temperature T3 of outdoor heat exchanger or the medium temperature T2 of indoor heat exchanger and air-conditioner current residing operational mode such as refrigeration mode, heating mode and dehumidification mode to air-conditioner.
When air-conditioner is in refrigeration mode or dehumidification mode, if T3≤45 DEG C, then the electric expansion valve controlled in air-conditioner runs with the first aperture such as PDC+50; If 45 DEG C of < T3≤50 DEG C, then the electric expansion valve controlled in air-conditioner runs with the second aperture such as PDC+100; If T3 > 50 DEG C, then the electric expansion valve controlled in air-conditioner runs with maximum opening.
When air-conditioner is in heating mode, if T2≤40 DEG C, then the electric expansion valve controlled in air-conditioner runs with the 3rd aperture such as PDH-50; If 40 DEG C of < T2≤50 DEG C, then the electric expansion valve controlled in air-conditioner runs with the 4th aperture such as PDH; If T2 > 50 DEG C, then the electric expansion valve controlled in air-conditioner runs with maximum opening.
According to one embodiment of present invention, when air-conditioner meet below arbitrary condition time, air-conditioner exits protecting control: (1) air-conditioner in a chiller mode or dehumidification mode run, and delivery temperature Tp is more than or equal to medium temperature T3 and the second temperature threshold sum of outdoor heat exchanger; (2) air-conditioner runs with heating mode, and delivery temperature Tp is more than or equal to medium temperature T2 and the 3rd temperature threshold sum of indoor heat exchanger; (3) delivery temperature Tp is more than or equal to default temperature protection threshold value.
Wherein, the second temperature threshold, the 3rd temperature threshold and temperature protection threshold value can be demarcated according to actual conditions, and such as, the second temperature threshold can be 20 DEG C, and the 3rd temperature threshold can be 15 DEG C.
That is, when air-conditioner is in refrigeration mode or dehumidification mode, if delivery temperature Tp >=T3+20 DEG C, then air-conditioner exits protecting control; Or when air-conditioner is in heating mode, if delivery temperature Tp >=T2+15 DEG C, then air-conditioner exits protecting control; Or the temperature protection threshold value of delivery temperature Tp >=default, when namely an excessive discharge temperature protection appears in air-conditioner, air-conditioner exits protecting control.
In sum; according to the protecting control method of the air-conditioner of the embodiment of the present invention; the delivery temperature Tp of compressor in real-time detection air-conditioner; judge whether air-conditioner meets according to delivery temperature Tp pre-conditioned; if air-conditioner meets pre-conditioned; then judge that the exhaust gas temperature sensor detecting delivery temperature Tp in air-conditioner gets loose, and when judging that exhaust gas temperature sensor gets loose, according to delivery temperature Tp and air-conditioner current residing operational mode, protecting control is carried out to air-conditioner.Therefore; the protecting control method of the air-conditioner of the embodiment of the present invention accurately can judge whether exhaust gas temperature sensor gets loose; and when judging that exhaust gas temperature sensor gets loose, protecting control is carried out to air-conditioner; effectively prevent air-conditioner from causing because exhaust gas temperature sensor gets loose operation not normal, thus ensure air-conditioner reliability service.
Fig. 2 is the block diagram of the air-conditioner according to the embodiment of the present invention.As shown in Figure 2, this air-conditioner comprises compressor 10, outdoor heat exchanger 20, indoor heat exchanger 30, exhaust gas temperature sensor 40, first temperature sensor 50, second temperature sensor 60, three-temperature sensor 70 and control module 80.
Wherein, exhaust gas temperature sensor 40 is for detecting the delivery temperature Tp of compressor 10, first temperature sensor 50 is for detecting outdoor environment temperature T4, second temperature sensor 60 is for the medium temperature T3 of sensing chamber's external heat exchanger 20, three-temperature sensor 70 is for detecting the medium temperature T2 of indoor heat exchanger 30, when control module 80 is for judging that air-conditioner meets pre-conditioned according to delivery temperature Tp, judge that exhaust gas temperature sensor 40 gets loose, and when judging that exhaust gas temperature sensor 40 gets loose, control module 80 carries out protecting control according to delivery temperature Tp and the current residing operational mode of air-conditioner to air-conditioner.
According to one embodiment of present invention, when delivery temperature Tp meets the following conditions, it is pre-conditioned that control module 80 judges that air-conditioner meets: (1) compressor 10 normally runs the first Preset Time final vacuum temperature Tp and is less than or equal to outdoor environment temperature T4 and the first temperature threshold sum; (2) when air-conditioner runs in a chiller mode, delivery temperature Tp is less than or equal to the medium temperature T3 of outdoor heat exchanger 20; (3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
Wherein, the first Preset Time can be 10min, and the second Preset Time can be 5min, and the first temperature threshold can be 2 DEG C.
According to another embodiment of the invention, when delivery temperature Tp meets the following conditions, it is pre-conditioned that control module 80 judges that air-conditioner meets: (1) compressor 10 normally runs the first Preset Time final vacuum temperature Tp and is less than or equal to outdoor environment temperature T4 and the first temperature threshold sum; (2) when air-conditioner runs with heating mode, delivery temperature Tp is less than or equal to the medium temperature T2 of indoor heat exchanger 30; (3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
Briefly, when delivery temperature Tp simultaneously meet below three conditions time, control module 80 can judge that the exhaust gas temperature sensor 40 detecting delivery temperature Tp in air-conditioner gets loose.
Condition one, at compressor 10 normal boot-strap and run the first Preset Time as 10min after, the delivery temperature Tp≤T4+2 DEG C of compressor in the air-conditioner that exhaust gas temperature sensor 40 detects.
Condition two, when air-conditioner is in refrigeration mode, the delivery temperature Tp≤T3 of compressor in the air-conditioner that exhaust gas temperature sensor 40 detects; And when air-conditioner is in heating mode, the delivery temperature Tp≤T2 of compressor in the air-conditioner that exhaust gas temperature sensor 40 detects.
Condition three, satisfy condition one and condition two simultaneously, and continue more than 5min.
According to one embodiment of present invention, as shown in Figure 2, above-mentioned air-conditioner also comprises display module 90, and display module 90 is for judging that in control module 80 exhaust gas temperature sensor 40 shows the fault type of air-conditioner when getting loose.
According to one embodiment of present invention, when the current residing operational mode of air-conditioner be refrigeration mode or dehumidification mode time, wherein, if the medium temperature T3 of outdoor heat exchanger 20 is less than or equal to the first preset temperature, the electric expansion valve that control module 80 controls in air-conditioner runs with the first aperture; If the medium temperature T3 of outdoor heat exchanger 20 is greater than the first preset temperature and be less than the second preset temperature, the electric expansion valve that control module 80 controls in air-conditioner runs with the second aperture, and the second aperture is greater than the first aperture; If the medium temperature T3 of outdoor heat exchanger 20 is more than or equal to the second preset temperature, the electric expansion valve that control module 80 controls in air-conditioner runs with maximum opening.
Wherein, the first preset temperature can be 45 DEG C, and the second preset temperature can be 50 DEG C, and the first aperture can be PDC+50, and the second aperture can be PDC+100.
According to another embodiment of the invention, when the current residing operational mode of air-conditioner is heating mode, wherein, if the medium temperature T2 of indoor heat exchanger 30 is less than or equal to the 3rd preset temperature, the electric expansion valve that control module 80 controls in air-conditioner runs with the 3rd aperture; If the medium temperature T2 of indoor heat exchanger 30 is greater than the 3rd preset temperature and be less than the 4th preset temperature, the electric expansion valve that control module 80 controls in air-conditioner runs with the 4th aperture, and the 4th aperture is greater than the 3rd aperture; If the medium temperature T2 of indoor heat exchanger 30 is more than or equal to the 4th preset temperature, the electric expansion valve that control module 80 controls in air-conditioner runs with maximum opening.
Wherein, the 3rd preset temperature can be 40 DEG C, and the 4th preset temperature can be 50 DEG C, and the 3rd aperture can be PDH-50, and the 4th aperture can be PDH.
Specifically, when control module 80 judges that exhaust gas temperature sensor 40 gets loose, indoor set shows fault type " EE ", to remind user by display module 90.Meanwhile, air conditioner without shutting runs, and namely carries out protecting control according to the medium temperature T3 of the outdoor heat exchanger 20 or medium temperature T2 of indoor heat exchanger 30 and air-conditioner current residing operational mode such as refrigeration mode, heating mode and dehumidification mode to air-conditioner.
When air-conditioner is in refrigeration mode or dehumidification mode, if T3≤45 DEG C, then the electric expansion valve that control module 80 controls in air-conditioner runs with the first aperture such as PDC+50; If 45 DEG C of < T3≤50 DEG C, then the electric expansion valve that control module 80 controls in air-conditioner runs with the second aperture such as PDC+100; If T3 > 50 DEG C, then the electric expansion valve that control module 80 controls in air-conditioner runs with maximum opening.
When air-conditioner is in heating mode, if T2≤40 DEG C, then the electric expansion valve that control module 80 controls in air-conditioner runs with the 3rd aperture such as PDH-50; If 40 DEG C of < T2≤50 DEG C, then the electric expansion valve that control module 80 controls in air-conditioner runs with the 4th aperture such as PDH; If T2 > 50 DEG C, then the electric expansion valve that control module 80 controls in air-conditioner runs with maximum opening.
According to one embodiment of present invention, when air-conditioner meet below arbitrary condition time, air-conditioner exits protecting control: (1) air-conditioner in a chiller mode or dehumidification mode run, and delivery temperature Tp is more than or equal to medium temperature T3 and the second temperature threshold sum of outdoor heat exchanger 20; (2) air-conditioner runs with heating mode, and delivery temperature Tp is more than or equal to medium temperature T2 and the 3rd temperature threshold sum of indoor heat exchanger 30; (3) delivery temperature Tp is more than or equal to default temperature protection threshold value.
Wherein, the second temperature threshold can be 20 DEG C, and the 3rd temperature threshold can be 15 DEG C.
That is, when air-conditioner is in refrigeration mode or dehumidification mode, if delivery temperature Tp >=T3+20 DEG C, then air-conditioner exits protecting control; Or when air-conditioner is in heating mode, if delivery temperature Tp >=T2+15 DEG C, then air-conditioner exits protecting control; Or the temperature protection threshold value of delivery temperature Tp >=default, when namely an excessive discharge temperature protection appears in air-conditioner, air-conditioner exits protecting control.
According to the air-conditioner of the embodiment of the present invention; when control module judges that air-conditioner meets pre-conditioned according to delivery temperature Tp; judge that exhaust gas temperature sensor gets loose; and when judging that exhaust gas temperature sensor gets loose, control module carries out protecting control according to delivery temperature Tp and the current residing operational mode of air-conditioner to air-conditioner.Therefore; the air-conditioner of the embodiment of the present invention accurately can judge whether exhaust gas temperature sensor gets loose; and automatically carry out protecting control when judging that exhaust gas temperature sensor gets loose, effectively prevent from causing because exhaust gas temperature sensor gets loose operation not normal, thus ensure reliability service.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (14)
1. a protecting control method for air-conditioner, is characterized in that, comprise the following steps:
Detect the delivery temperature Tp of compressor in described air-conditioner;
When judging that described air-conditioner meets pre-conditioned according to described delivery temperature Tp, judge that the exhaust gas temperature sensor detecting described delivery temperature Tp in described air-conditioner gets loose;
When judging that described exhaust gas temperature sensor gets loose, according to described delivery temperature Tp and described air-conditioner current residing operational mode, protecting control is carried out to described air-conditioner.
2. the protecting control method of air-conditioner according to claim 1, is characterized in that, when described delivery temperature Tp meets the following conditions, judges that described air-conditioner meets described pre-conditioned:
(1) described compressor after normally running the first Preset Time described delivery temperature Tp be less than or equal to outdoor environment temperature T4 and the first temperature threshold sum;
(2) when described air-conditioner runs in a chiller mode, described delivery temperature Tp is less than or equal to the medium temperature T3 of outdoor heat exchanger;
(3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
3. the protecting control method of air-conditioner according to claim 1, is characterized in that, when described delivery temperature Tp meets the following conditions, judges that described air-conditioner meets described pre-conditioned:
(1) described compressor after normally running the first Preset Time described delivery temperature Tp be less than or equal to outdoor environment temperature T4 and the first temperature threshold sum;
(2) when described air-conditioner runs with heating mode, described delivery temperature Tp is less than or equal to the medium temperature T2 of indoor heat exchanger;
(3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
4. the protecting control method of the air-conditioner according to any one of claim 1-3, is characterized in that, when judging that described exhaust gas temperature sensor gets loose, also shows the fault type of described air-conditioner.
5. the protecting control method of the air-conditioner according to any one of claim 1-3, is characterized in that, carries out protecting control, specifically comprise according to described delivery temperature Tp and the current residing operational mode of described air-conditioner to described air-conditioner:
When the current residing operational mode of described air-conditioner be refrigeration mode or dehumidification mode time, wherein,
If the medium temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature, then the electric expansion valve controlled in described air-conditioner runs with the first aperture;
If the medium temperature T3 of outdoor heat exchanger is greater than described first preset temperature and is less than the second preset temperature, then the electric expansion valve controlled in described air-conditioner runs with the second aperture, and described second aperture is greater than described first aperture;
If the medium temperature T3 of outdoor heat exchanger is more than or equal to described second preset temperature, then the electric expansion valve controlled in described air-conditioner runs with maximum opening.
6. the protecting control method of the air-conditioner according to any one of claim 1-3, is characterized in that, carries out protecting control, specifically comprise according to described delivery temperature Tp and the current residing operational mode of described air-conditioner to described air-conditioner:
When the current residing operational mode of described air-conditioner is heating mode, wherein,
If the medium temperature T2 of indoor heat exchanger is less than or equal to the 3rd preset temperature, then the electric expansion valve controlled in described air-conditioner runs with the 3rd aperture;
If the medium temperature T2 of indoor heat exchanger is greater than described 3rd preset temperature and is less than the 4th preset temperature, then the electric expansion valve controlled in described air-conditioner runs with the 4th aperture, and described 4th aperture is greater than described 3rd aperture;
If the medium temperature T2 of indoor heat exchanger is more than or equal to described 4th preset temperature, then the electric expansion valve controlled in described air-conditioner runs with maximum opening.
7. the protecting control method of air-conditioner according to claim 1, is characterized in that, when described air-conditioner meet below arbitrary condition time, described air-conditioner exits protecting control:
(1) described air-conditioner in a chiller mode or dehumidification mode run, and described delivery temperature Tp is more than or equal to medium temperature T3 and the second temperature threshold sum of outdoor heat exchanger;
(2) described air-conditioner runs with heating mode, and described delivery temperature Tp is more than or equal to medium temperature T2 and the 3rd temperature threshold sum of indoor heat exchanger;
(3) described delivery temperature Tp is more than or equal to default temperature protection threshold value.
8. an air-conditioner, is characterized in that, comprising:
Compressor;
Outdoor heat exchanger;
Indoor heat exchanger;
Exhaust gas temperature sensor, for detecting the delivery temperature Tp of described compressor;
First temperature sensor, for detecting outdoor environment temperature T4;
Second temperature sensor, for detecting the medium temperature T3 of described outdoor heat exchanger;
Three-temperature sensor, for detecting the medium temperature T2 of described indoor heat exchanger;
Control module; during for judging that described air-conditioner meets pre-conditioned according to described delivery temperature Tp; judge that described exhaust gas temperature sensor gets loose; and when judging that described exhaust gas temperature sensor gets loose, described control module carries out protecting control according to described delivery temperature Tp and the current residing operational mode of described air-conditioner to described air-conditioner.
9. air-conditioner according to claim 8, is characterized in that, when described delivery temperature Tp meets the following conditions, it is described pre-conditioned that described control module judges that described air-conditioner meets:
(1) described compressor after normally running the first Preset Time described delivery temperature Tp be less than or equal to outdoor environment temperature T4 and the first temperature threshold sum;
(2) when described air-conditioner runs in a chiller mode, described delivery temperature Tp is less than or equal to the medium temperature T3 of outdoor heat exchanger;
(3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
10. air-conditioner according to claim 8, is characterized in that, when described delivery temperature Tp meets the following conditions, it is described pre-conditioned that described control module judges that described air-conditioner meets:
(1) described compressor after normally running the first Preset Time described delivery temperature Tp be less than or equal to outdoor environment temperature T4 and the first temperature threshold sum;
(2) when described air-conditioner runs with heating mode, described delivery temperature Tp is less than or equal to the medium temperature T2 of indoor heat exchanger;
(3) condition (1) and condition (2) meet simultaneously and continue the second Preset Time.
11. air-conditioners according to Claim 8 according to any one of-10, is characterized in that, also comprise display module, and described display module is used for judging that described exhaust gas temperature sensor shows the fault type of described air-conditioner when getting loose in described control module.
12. air-conditioners according to Claim 8 according to any one of-10, is characterized in that, when the current residing operational mode of described air-conditioner be refrigeration mode or dehumidification mode time, wherein,
If the medium temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with the first aperture;
If the medium temperature T3 of outdoor heat exchanger is greater than described first preset temperature and is less than the second preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with the second aperture, and described second aperture is greater than described first aperture;
If the medium temperature T3 of outdoor heat exchanger is more than or equal to described second preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with maximum opening.
13. air-conditioners according to Claim 8 according to any one of-10, is characterized in that, when the current residing operational mode of described air-conditioner is heating mode, wherein,
If the medium temperature T2 of indoor heat exchanger is less than or equal to the 3rd preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with the 3rd aperture;
If the medium temperature T2 of indoor heat exchanger is greater than described 3rd preset temperature and is less than the 4th preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with the 4th aperture, and described 4th aperture is greater than described 3rd aperture;
If the medium temperature T2 of indoor heat exchanger is more than or equal to described 4th preset temperature, the electric expansion valve that described control module then controls in described air-conditioner runs with maximum opening.
14. air-conditioners according to claim 8, is characterized in that, when described air-conditioner meet below arbitrary condition time, described air-conditioner exits protecting control:
(1) described air-conditioner in a chiller mode or dehumidification mode run, and described delivery temperature Tp is more than or equal to medium temperature T3 and the second temperature threshold sum of outdoor heat exchanger;
(2) described air-conditioner runs with heating mode, and described delivery temperature Tp is more than or equal to medium temperature T2 and the 3rd temperature threshold sum of indoor heat exchanger;
(3) described delivery temperature Tp is more than or equal to default temperature protection threshold value.
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