CN104990204A - Variable-frequency air conditioner and pressure detection method and device thereof - Google Patents
Variable-frequency air conditioner and pressure detection method and device thereof Download PDFInfo
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- CN104990204A CN104990204A CN201510304754.0A CN201510304754A CN104990204A CN 104990204 A CN104990204 A CN 104990204A CN 201510304754 A CN201510304754 A CN 201510304754A CN 104990204 A CN104990204 A CN 104990204A
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- air conditioning
- transducer air
- pressure
- system pressure
- user instruction
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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
- F24F11/62—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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
Abstract
The invention discloses a pressure detection method of a variable-frequency air conditioner. The pressure detection method includes the following steps of receiving a user instruction, controlling the variable-frequency air conditioner to enter the pressure detection mode according to the user instruction, making the variable-frequency air conditioner run according to preset control parameters after the variable-frequency air conditioner enters the pressure detection mode, detecting the current indoor and outdoor environment temperature, detecting the system pressure value of the variable-frequency air conditioner, obtaining the current running mode of the variable-frequency air conditioner according to the user instruction, obtaining the system pressure threshold value of the variable-frequency air conditioner according to the current indoor and outdoor environment temperature and the current running mode of the variable-frequency air conditioner, and judging whether the system pressure of the variable-frequency air conditioner is in the normal state or not according to the system pressure threshold value and the system pressure value. By means of the pressure detection method, whether the system pressure of the variable-frequency air conditioner is in the normal state or not can be accurately judged, and the method is simple and reliable. The invention further discloses a pressure detection device of the variable-frequency air conditioner and the variable-frequency air conditioner.
Description
Technical field
The present invention relates to transducer air conditioning technical field, particularly a kind of pressure detection method of transducer air conditioning, the pressure-detecting device of transducer air conditioning and a kind of transducer air conditioning.
Background technology
At present, household inverter air conditioner when maintenance conditions, even if obtained system pressure well can not judge whether the system pressure of transducer air conditioning exists exception, its reason have following some:
1, the frequency of transducer air conditioning is change, and frequency is higher, and system pressure is larger; Otherwise it is less.Namely the running frequency of compressor determines the uncertainty of system pressure.
2, outdoor environment temperature is uncertain, causes system pressure to change.Usually, outdoor environment temperature is higher, and system pressure is larger; Otherwise it is less.Namely environment temperature determines the uncertainty of system pressure.
3, indoor fan rotating speed and outdoor fan rotating speed be change, usual indoor fan rotating speed and outdoor fan rotating speed larger, system pressure is less; Otherwise it is larger.Namely indoor fan rotating speed and outdoor fan rotating speed determine the uncertainty of system pressure.
4, in transducer air conditioning, electronic expansion valve opening is change, and usual electronic expansion valve opening is larger, and system pressure is less; Otherwise it is larger.Namely the unstability of electronic expansion valve opening determines the uncertainty of system pressure.
Above 4 system pressures determining transducer air conditioning are uncertain, therefore, namely allow to the system pressure normally reading transducer air conditioning, whether can not be in normal condition by decision-making system pressure, make troubles to maintenance conditions.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, one object of the present invention is the pressure detection method proposing a kind of transducer air conditioning, accurately can judge whether the system pressure of transducer air conditioning is in normal condition, and method is simple and reliable.
Another object of the present invention is the pressure-detecting device proposing a kind of transducer air conditioning.Another object of the present invention is to propose a kind of transducer air conditioning.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of pressure detection method of transducer air conditioning, comprises the following steps: S1, receives user instruction, and controls described transducer air conditioning according to described user instruction and enter pressure detecting pattern; S2, after described transducer air conditioning enters described pressure detecting pattern, control described transducer air conditioning with the controling parameters preset to run, wherein, described default controling parameters comprises the aperture of the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve; S3, detects current indoor environment temperature and current outdoor environment temperature, and detects the system pressure value of described transducer air conditioning; S4, the present mode of operation of described transducer air conditioning is obtained according to described user instruction, and obtain the system pressure threshold value of described transducer air conditioning according to the present mode of operation of described current indoor environment temperature, described current outdoor environment temperature and described transducer air conditioning, and judge whether the system pressure of described transducer air conditioning is in normal condition according to the system pressure threshold value of described transducer air conditioning and the system pressure value of described transducer air conditioning.
According to the pressure detection method of the transducer air conditioning of the embodiment of the present invention, first user instruction is received, and enter pressure detecting pattern according to user instruction control transducer air conditioning, after transducer air conditioning enters pressure detecting pattern, control transducer air conditioning with the controling parameters preset to run, wherein, the controling parameters preset comprises the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and the aperture of electric expansion valve, then current indoor environment temperature and current outdoor environment temperature is detected, and detect the system pressure value of transducer air conditioning, then the present mode of operation of transducer air conditioning is obtained according to user instruction, and according to current indoor environment temperature, the present mode of operation of current outdoor environment temperature and transducer air conditioning obtains the system pressure threshold value of transducer air conditioning, and judge whether the system pressure of transducer air conditioning is in normal condition according to the system pressure threshold value of transducer air conditioning and the system pressure value of transducer air conditioning, thus the accurate judgement realized the system pressure of transducer air conditioning, avoid the frequency because of compressor, the rotating speed of indoor fan, the system pressure that the uncertainty of the rotating speed of outdoor fan and the aperture of electric expansion valve etc. causes cannot judge, and this detection method is simple and reliable, offer convenience to maintenance conditions.
According to one embodiment of present invention, control described transducer air conditioning according to described user instruction and enter pressure detecting pattern, specifically comprise: obtain setup parameter according to described user instruction, and control the startup of described transducer air conditioning according to described setup parameter; After described transducer air conditioning starts, judge whether the number of times that the programmable button of described transducer air conditioning is triggered reaches preset times according to described user instruction; If so, then control described transducer air conditioning and enter described pressure detecting pattern.
According to one embodiment of present invention, when described setup parameter be refrigeration mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and the number of times that described programmable button is triggered is when reaching described preset times, controls described transducer air conditioning and enter described pressure detecting pattern with refrigerating state; When described setup parameter be heating mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that described programmable button is triggered reaches described preset times, control described transducer air conditioning and enter described pressure detecting pattern to heat state.
According to one embodiment of present invention, described default controling parameters is specially: the frequency of described compressor is 50Hz, the rotating speed of described indoor fan is 1200rpm, the rotating speed of described outdoor fan is 800rpm, the aperture of described electric expansion valve is 200 steps.
According to one embodiment of present invention, when meet below arbitrary condition time, control described transducer air conditioning and exit described pressure detecting pattern: the time that (1) described transducer air conditioning enters described pressure detecting pattern reaches the first Preset Time; (2) described transducer air conditioning receives shutdown command; (3) described transducer air conditioning receives pattern switching command.
For achieving the above object, the present invention on the other hand embodiment proposes a kind of pressure-detecting device of transducer air conditioning, comprising: receiver module, for receiving user instruction, temperature detecting module, for detecting current indoor environment temperature and current outdoor environment temperature, pressure detecting module, for detecting the system pressure value of described transducer air conditioning, control module, pressure detecting pattern is entered for controlling described transducer air conditioning according to described user instruction, and the operation of described transducer air conditioning is controlled with the controling parameters preset after described transducer air conditioning enters described pressure detecting pattern, and the present mode of operation of described transducer air conditioning is also obtained according to described user instruction, and according to described current indoor environment temperature, the present mode of operation of described current outdoor environment temperature and described transducer air conditioning obtains the system pressure threshold value of described transducer air conditioning, and judge whether the system pressure of described transducer air conditioning is in normal condition according to the system pressure threshold value of described transducer air conditioning and the system pressure value of described transducer air conditioning, wherein, described default controling parameters comprises the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and the aperture of electric expansion valve.
According to the pressure-detecting device of the transducer air conditioning of the embodiment of the present invention, control module controls transducer air conditioning according to the user instruction that receiver module receives and enters pressure detecting pattern, and transducer air conditioning operation is controlled with the controling parameters preset after transducer air conditioning enters pressure detecting pattern, and the user instruction also received according to receiver module obtains the present mode of operation of transducer air conditioning, and according to the current indoor environment temperature that temperature detecting module detects, the present mode of operation of current outdoor environment temperature and transducer air conditioning obtains the system pressure threshold value of transducer air conditioning, and judge whether the system pressure of transducer air conditioning is in normal condition according to the system pressure value of the system pressure threshold value of transducer air conditioning and the transducer air conditioning of pressure detecting module detection, wherein, the controling parameters preset comprises the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and the aperture of electric expansion valve.Therefore, the pressure-detecting device of the transducer air conditioning of the embodiment of the present invention can realize the accurate judgement of the system pressure to transducer air conditioning, avoid the system pressure that the uncertainty because of the aperture etc. of the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve causes cannot judge, and this detection method is simple and reliable, offers convenience to maintenance conditions.
According to one embodiment of present invention, described control module obtains setup parameter according to described user instruction further, and control the startup of described transducer air conditioning according to described setup parameter, and after described transducer air conditioning starts, according to described user instruction, described control module judges whether the number of times that the programmable button of described transducer air conditioning is triggered reaches preset times, and when the number of times judging that described programmable button is triggered reaches described preset times, described control module controls described transducer air conditioning and enters described pressure detecting pattern.
According to one embodiment of present invention, when described setup parameter be refrigeration mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and the number of times that described programmable button is triggered is when reaching described preset times, controls described transducer air conditioning and enter described pressure detecting pattern with refrigerating state; When described setup parameter be heating mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that described programmable button is triggered reaches described preset times, control described transducer air conditioning and enter described pressure detecting pattern to heat state.
According to one embodiment of present invention, described default controling parameters is specially: the frequency of described compressor is 50Hz, the rotating speed of described indoor fan is 1200rpm, the rotating speed of described outdoor fan is 800rpm, the aperture of described electric expansion valve is 200 steps.
According to one embodiment of present invention, when meet below arbitrary condition time, described control module controls described transducer air conditioning and exits described pressure detecting pattern: the time that (1) described transducer air conditioning enters described pressure detecting pattern reaches the first Preset Time; (2) described receiver module receives shutdown command; (3) described receiver module receives pattern switching command.
In addition, embodiments of the invention also proposed a kind of transducer air conditioning, and it comprises above-mentioned pressure-detecting device.
This transducer air conditioning is by above-mentioned pressure-detecting device, the accurate judgement of system pressure can be realized, avoid the system pressure that the uncertainty because of the aperture etc. of the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve causes cannot judge, offer convenience to maintenance conditions.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the flow chart of the pressure detection method of transducer air conditioning according to the embodiment of the present invention.
Fig. 2 is the block diagram of the pressure-detecting device of transducer air conditioning according to the embodiment of the present invention.
Reference numeral: receiver module 10, temperature detecting module 20, pressure detecting module 30 and control module 40.
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.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The pressure detection method of transducer air conditioning, the pressure-detecting device of transducer air conditioning and transducer air conditioning that the embodiment of the present invention proposes are described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the pressure detection method of transducer air conditioning according to the embodiment of the present invention.As shown in Figure 1, the pressure detection method of this transducer air conditioning comprises the following steps:
S1, receives user instruction, and enters pressure detecting pattern according to user instruction control transducer air conditioning.
According to one embodiment of present invention, control transducer air conditioning according to user instruction and enter pressure detecting pattern, specifically comprise: obtain setup parameter according to user instruction, and control transducer air conditioning startup according to setup parameter; After transducer air conditioning starts, judge whether the number of times that the programmable button of transducer air conditioning is triggered reaches preset times according to user instruction; If so, then control transducer air conditioning and enter pressure detecting pattern.
Wherein, preset times can be demarcated according to actual conditions, and such as, preset times can be 5 times.In addition, programmable button also can set according to actual conditions, and such as, programmable button can be powerful button.
According to one embodiment of present invention, when setup parameter be refrigeration mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that programmable button is triggered reaches preset times, control transducer air conditioning and enter pressure detecting pattern with refrigerating state; When setup parameter be heating mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that programmable button is triggered reaches preset times, control transducer air conditioning and enter pressure detecting pattern to heat state.Specifically, first user selects refrigeration mode and high wind shelves, and design temperature is 25 DEG C, then presses key and opens to make transducer air conditioning, after transducer air conditioning normally starts, user makes transducer air conditioning automatically enter pressure detecting pattern with refrigerating state by 5 powerful buttons; First user selects heating mode and high wind shelves, and design temperature is 25 DEG C, then press key to open to make transducer air conditioning, after transducer air conditioning normally starts, user makes transducer air conditioning automatically enter pressure detecting pattern to heat state by 5 powerful buttons.
S2, after transducer air conditioning enters pressure detecting pattern, controls transducer air conditioning with the controling parameters preset and runs, and wherein, default controling parameters comprises the aperture of the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve.
According to one embodiment of present invention, the controling parameters preset is specially: the frequency of compressor is 50Hz, the rotating speed of indoor fan is 1200rpm, the rotating speed of outdoor fan is 800rpm, the aperture of electric expansion valve is 200 steps.
Specifically, after transducer air conditioning enters pressure detecting pattern, transducer air conditioning runs according to the aperture of the frequency of the compressor preset, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve.Usually be the intermediate frequency of transducer air conditioning compressor when normally running by the frequency setting of compressor, preferably, the frequency of compressor is about 50Hz; Indoor fan height wind tachometer value when the rotating speed of indoor fan is the operation of transducer air conditioning height wind, such as, the rotating speed of indoor fan can be 1200rpm; Outdoor fan height wind tachometer value when the rotating speed of outdoor fan is the operation of transducer air conditioning height wind, such as, the rotating speed of outdoor fan is 800rpm; The aperture of electric expansion valve is set as middle aperture, and preferably, the aperture of electric expansion valve is about 200 steps.
S3, detects current indoor environment temperature and current outdoor environment temperature, and detects the system pressure value of transducer air conditioning.
It should be noted that, the pressure detecting of convertible frequency air-conditioner of the present invention manually can be detected by user, also automatically can be detected by transducer air conditioning.Wherein, when user manually carries out pressure detecting, the system pressure value of transducer air conditioning can be obtained by the Pressure gauge on the spool of the low-pressure shutoff valve or high-pressure stop valve that are arranged on the off-premises station of transducer air conditioning; When automatically carrying out pressure detecting by transducer air conditioning, the system pressure value of transducer air conditioning can be obtained by checkout gears such as the pressure sensors on the spool of the low-pressure shutoff valve or high-pressure stop valve that are arranged on the off-premises station of transducer air conditioning.
S4, the present mode of operation of transducer air conditioning is obtained according to user instruction, and obtain the system pressure threshold value of transducer air conditioning according to the present mode of operation of current indoor environment temperature, current outdoor environment temperature and transducer air conditioning, and judge whether the system pressure of transducer air conditioning is in normal condition according to the system pressure threshold value of transducer air conditioning and the system pressure value of transducer air conditioning.
It should be noted that, the system pressure threshold value of transducer air conditioning is transducer air conditioning normal system pressure value when dispatching from the factory.In order to can better and transducer air conditioning dispatches from the factory time normal system pressure value contrast, need on the technical manual of transducer air conditioning, to provide the experimental data shown in table 1, can judge whether the system pressure of transducer air conditioning is in normal condition better when user manually carries out pressure detecting.Wherein, the system pressure threshold value shown in table 1 is determined by experiment test.
Table 1
Certainly, also can above-mentioned table 1 be set in advance in transducer air conditioning, so that when transducer air conditioning carries out pressure detecting automatically, whether transducer air conditioning can be in normal condition according to the system pressure of this table automatic decision transducer air conditioning, and shows judged result.
Particularly, when the present mode of operation of transducer air conditioning is refrigeration mode, the system pressure threshold value under transducer air conditioning refrigeration mode is obtained according to current indoor environment temperature and current outdoor environment temperature, and the system pressure threshold value of acquisition and the system pressure value of transducer air conditioning are compared, to judge whether the system pressure of transducer air conditioning is in normal condition; When the present mode of operation of transducer air conditioning is heating mode, the system pressure threshold value under transducer air conditioning heating mode is obtained according to current indoor environment temperature and current outdoor environment temperature, and the system pressure threshold value of acquisition and the system pressure value of transducer air conditioning are compared, to judge whether the system pressure of transducer air conditioning is in normal condition.
According to one embodiment of present invention, when meeting following arbitrary condition, control transducer air conditioning exits pressure detecting pattern: the time that (1) transducer air conditioning enters pressure detecting pattern reaches the first Preset Time; (2) transducer air conditioning receives shutdown command; (3) transducer air conditioning receives pattern switching command.
Wherein, the first Preset Time can be demarcated according to actual conditions, and such as, the first Preset Time can be 30min.
According to a concrete example of the present invention, the Default Value parameter of the transducer air conditioning under pressure detecting pattern is: the frequency of compressor is 50Hz, the rotating speed of indoor fan is 1200rpm, the rotating speed of outdoor fan is 800rpm, the aperture of electric expansion valve is 200 steps.Further, the technical manual of transducer air conditioning provides the experimental data shown in table 2.
Table 2
Suppose, current season is winter, and the outdoor environment temperature of detection is 4 DEG C, and indoor environment temperature is 10 DEG C.
When user manually carries out pressure detecting, Pressure gauge is arranged on low-pressure shutoff valve or the high-pressure stop valve place of off-premises station by user according to working specification, then heating mode and high wind shelves are selected, and design temperature is 25 DEG C, by key to make transducer air conditioning normal boot-strap, after compressor start, transducer air conditioning is made to enter pressure detecting pattern to heat state by 5 powerful buttons, stablize after 3-5min until transducer air conditioning, reading now manometric tabular value is 2.89MPa.
User is known by table 2, when transducer air conditioning is in heating mode and outdoor environment temperature is 5 DEG C, when indoor environment temperature is 15 DEG C, the system pressure threshold value of transducer air conditioning is 3.12MPa, the outdoor environment temperature detected due to reality is 4 DEG C, therefore, the normal system pressure value of transducer air conditioning is between 3.02-3.12MPa.And the tabular value of actual pressure table is 2.89MPa, on the low side compared with the normal system pressure value of transducer air conditioning, therefore, can judge the pressure anomaly of transducer air conditioning, snow kind of amount is on the low side.
Above-mentioned pressure detection method is applicable to non-setting pressure checkout gear as the transducer air conditioning of pressure sensor, and when transducer air conditioning have pressure-detecting device as pressure sensor to detect the system pressure value of transducer air conditioning time, automatically pressure detecting can be carried out by transducer air conditioning, now, the experimental data shown in table 2 has been set in advance in transducer air conditioning.
Specifically, first user selects heating mode and high wind shelves, and design temperature is 25 DEG C, by key to make transducer air conditioning normal boot-strap, after compressor start, then makes transducer air conditioning enter pressure detecting pattern to heat state by 5 powerful buttons.After transducer air conditioning enters pressure detecting pattern, transducer air conditioning starts timing, and after timing time reaches 3-5min, the system pressure value being obtained current transducer air conditioning by pressure sensor is 2.89MPa.Simultaneously, it is 4 DEG C that transducer air conditioning obtains current outdoor environment temperature, indoor environment temperature is 10 DEG C, then the system pressure threshold value obtaining current transducer air conditioning by tabling look-up is 3.02-3.12MPa, and compares with the system pressure value 2.89MPa of current transducer air conditioning, judges that the system pressure value 2.89MPa of current transducer air conditioning is on the low side, now, transducer air conditioning is on the low side by display module display pressure, and snow kind of amount is on the low side, to remind user.
The time entering pressure detecting pattern when transducer air conditioning reaches the first Preset Time as 30min; Or transducer air conditioning receives shutdown command; Or transducer air conditioning receives pattern switching command, control transducer air conditioning and exit pressure detecting pattern.
It should be noted that; when obtaining the system pressure value of transducer air conditioning; because the temperature in the outdoor environment temperature that obtains and indoor environment temperature and the experimental data as shown in table 2 that provides has certain deviation; therefore, when judging whether system pressure is in normal, usually certain deviation range can be left; such as; deviation range can be ± 0.2Mpa, and in this deviation range, it is qualified that the system pressure of transducer air conditioning is.
In sum, according to the pressure detection method of the transducer air conditioning of the embodiment of the present invention, first user instruction is received, and enter pressure detecting pattern according to user instruction control transducer air conditioning, after transducer air conditioning enters pressure detecting pattern, control transducer air conditioning with the controling parameters preset to run, wherein, the controling parameters preset comprises the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and the aperture of electric expansion valve, then current indoor environment temperature and current outdoor environment temperature is detected, and detect the system pressure value of transducer air conditioning, then the present mode of operation of transducer air conditioning is obtained according to user instruction, and according to current indoor environment temperature, the present mode of operation of current outdoor environment temperature and transducer air conditioning obtains the system pressure threshold value of transducer air conditioning, and judge whether the system pressure of transducer air conditioning is in normal condition according to the system pressure threshold value of transducer air conditioning and the system pressure value of transducer air conditioning, thus the accurate judgement realized the system pressure of transducer air conditioning, avoid the frequency because of compressor, the rotating speed of indoor fan, the system pressure that the uncertainty of the rotating speed of outdoor fan and the aperture of electric expansion valve etc. causes cannot judge, and this detection method is simple and reliable, offer convenience to maintenance conditions.
Fig. 2 is the block diagram of the pressure-detecting device of transducer air conditioning according to the embodiment of the present invention.As shown in Figure 2, the pressure-detecting device of this transducer air conditioning comprises receiver module 10, temperature detecting module 20, pressure detecting module 30 and control module 40.
Wherein, receiver module 10 is for receiving user instruction, temperature detecting module 20 is for detecting current indoor environment temperature and current outdoor environment temperature, pressure detecting module 30 is for detecting the system pressure value of transducer air conditioning, control module 40 enters pressure detecting pattern for controlling transducer air conditioning according to user instruction, and transducer air conditioning operation is controlled with the controling parameters preset after transducer air conditioning enters pressure detecting pattern, and the present mode of operation of transducer air conditioning is also obtained according to user instruction, and according to current indoor environment temperature, the present mode of operation of current outdoor environment temperature and transducer air conditioning obtains the system pressure threshold value of transducer air conditioning, and judge whether the system pressure of transducer air conditioning is in normal condition according to the system pressure threshold value of transducer air conditioning and the system pressure value of transducer air conditioning, wherein, the controling parameters preset comprises the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and the aperture of electric expansion valve.
It should be noted that, pressure detecting module 30 can be pressure sensor, and pressure detecting module 30 can be arranged on the low-pressure shutoff valve of the off-premises station of transducer air conditioning or the spool of high-pressure stop valve to detect the system pressure value of transducer air conditioning.
In addition, the system pressure threshold value of transducer air conditioning is transducer air conditioning normal system pressure value when dispatching from the factory.In order to can better and transducer air conditioning dispatches from the factory time normal system pressure value contrast, above-mentioned table 1 is set in advance in control module 40, so that pressure-detecting device is when carrying out pressure detecting, can judge whether the system pressure of transducer air conditioning is in normal condition according to this table, and judged result is shown.
Specifically, user enters pressure detecting pattern by controlling transducer air conditioning to make transducer air conditioning, after transducer air conditioning enters pressure detecting pattern, control module 40 controls transducer air conditioning according to the controling parameters preset and runs, then the present mode of operation of the current indoor environment temperature that detects according to temperature detecting module 20 of control module 40 and current outdoor environment temperature and transducer air conditioning obtains the system pressure threshold value of transducer air conditioning from the table 1 pre-set, and the system pressure value of the transducer air conditioning obtained with pressure detecting module 30 compares to judge whether the system pressure of transducer air conditioning is in normal condition.
According to one embodiment of present invention, control module 40 obtains setup parameter according to user instruction further, and control transducer air conditioning startup according to setup parameter, and after transducer air conditioning starts, according to user instruction, control module 40 judges whether the number of times that the programmable button of transducer air conditioning is triggered reaches preset times, and when the number of times judging that programmable button is triggered reaches preset times, control module 40 controls transducer air conditioning and enters pressure detecting pattern.
Wherein, preset times can be 5 times, and programmable button can be powerful button.
According to one embodiment of present invention, when setup parameter be refrigeration mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that programmable button is triggered reaches preset times, control transducer air conditioning and enter pressure detecting pattern with refrigerating state; When setup parameter be heating mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that programmable button is triggered reaches preset times, control transducer air conditioning and enter pressure detecting pattern to heat state.
Specifically, first user selects refrigeration mode and high wind shelves, and design temperature is 25 DEG C, then presses key and opens to make transducer air conditioning, after transducer air conditioning normally starts, user enters pressure detecting pattern by 5 powerful buttons automatically to make transducer air conditioning; First user selects heating mode and high wind shelves, and design temperature is 25 DEG C, then presses key and opens to make transducer air conditioning, and after transducer air conditioning normally starts, user enters pressure detecting pattern by 5 powerful buttons automatically to make transducer air conditioning.
According to one embodiment of present invention, the controling parameters preset is specially: the frequency of compressor is 50Hz, the rotating speed of indoor fan is 1200rpm, the rotating speed of outdoor fan is 800rpm, the aperture of electric expansion valve is 200 steps.
Specifically, after transducer air conditioning enters pressure detecting pattern, control module 40 is run according to the aperture of the frequency of the compressor preset, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve.Usually be the intermediate frequency of transducer air conditioning compressor when normally running by the frequency setting of compressor, preferably, the frequency of compressor is about 50Hz; Indoor fan height wind tachometer value when the rotating speed of indoor fan is the operation of transducer air conditioning height wind, such as, the rotating speed of indoor fan can be 1200rpm; Outdoor fan height wind tachometer value when the rotating speed of outdoor fan is the operation of transducer air conditioning height wind, such as, the rotating speed of outdoor fan is 800rpm; The aperture of electric expansion valve is set as middle aperture, and preferably, the aperture of electric expansion valve is about 200 steps.
According to one embodiment of present invention, when meet below arbitrary condition time, control module 40 controls transducer air conditioning and exits pressure detecting pattern: the time that (1) transducer air conditioning enters pressure detecting pattern reaches the first Preset Time; (2) receiver module 10 receives shutdown command; (3) receiver module 10 receives pattern switching command.
Wherein, the first Preset Time can be 30min.
Particularly, when the present mode of operation of the transducer air conditioning that control module 40 obtains is refrigeration mode, control module 40 obtains the system pressure threshold value under transducer air conditioning refrigeration mode according to current indoor environment temperature and current outdoor environment temperature, and the system pressure threshold value of acquisition and the system pressure value of transducer air conditioning are compared, to judge whether the system pressure of transducer air conditioning is in normal condition; When the present mode of operation of the transducer air conditioning that control module 40 obtains is heating mode, control module 40 obtains the system pressure threshold value under transducer air conditioning heating mode according to current indoor environment temperature and current outdoor environment temperature, and the system pressure threshold value of acquisition and the system pressure value of transducer air conditioning are compared, to judge whether the system pressure of transducer air conditioning is in normal condition.
According to a concrete example of the present invention, the Default Value parameter of the transducer air conditioning under pressure detecting pattern is: the frequency of compressor is 50Hz, the rotating speed of indoor fan is 1200rpm, the rotating speed of outdoor fan is 800rpm, the aperture of electric expansion valve is 200 steps, further, the experimental data shown in table 2 has been set in advance in control module 40.
Suppose that current season is winter, then when user starts to carry out pressure detecting, first user selects heating mode and high wind shelves, and design temperature is 25 DEG C, by key to make transducer air conditioning normal boot-strap, after compressor start, then transducer air conditioning is made to enter pressure detecting pattern to heat state by 5 powerful buttons.After transducer air conditioning enters pressure detecting pattern, transducer air conditioning starts timing, after timing time reaches 3-5min, the system pressure value of pressure detecting module 30 current transducer air conditioning as pressure sensor obtains is 2.89MPa, simultaneously, it is 4 DEG C that temperature detecting module 20 obtains current outdoor environment temperature, indoor environment temperature is 10 DEG C, then the system pressure threshold value that control module 40 obtains current transducer air conditioning by look-up table 2 is 3.02-3.12MPa, and compare with the system pressure value 2.89MPa of current transducer air conditioning, judge that the system pressure value 2.89MPa of current transducer air conditioning is on the low side, now, transducer air conditioning is on the low side by display module display pressure, snow kind of amount is on the low side, to remind user.
The time entering pressure detecting pattern when transducer air conditioning reaches the first Preset Time as 30min; Or receiver module 10 receives shutdown command; Or receiver module 10 receives pattern switching command, control module 40 controls transducer air conditioning and exits pressure detecting pattern.
It should be noted that; when pressure detecting module 30 obtains the system pressure value of transducer air conditioning; temperature in the outdoor environment temperature obtained due to temperature detecting module 20 and indoor environment temperature and the experimental data as shown in table 2 that provides has certain deviation; therefore, when judging whether system pressure is in normal, usually certain deviation range can be left; such as; deviation range can be ± 0.2Mpa, and in this deviation range, it is qualified that the system pressure of transducer air conditioning is.
According to the pressure-detecting device of the transducer air conditioning of the embodiment of the present invention, control module controls transducer air conditioning according to the user instruction that receiver module receives and enters pressure detecting pattern, and transducer air conditioning operation is controlled with the controling parameters preset after transducer air conditioning enters pressure detecting pattern, and the user instruction also received according to receiver module obtains the present mode of operation of transducer air conditioning, and according to the current indoor environment temperature that temperature detecting module detects, the present mode of operation of current outdoor environment temperature and transducer air conditioning obtains the system pressure threshold value of transducer air conditioning, and judge whether the system pressure of transducer air conditioning is in normal condition according to the system pressure value of the system pressure threshold value of transducer air conditioning and the transducer air conditioning of pressure detecting module detection, wherein, the controling parameters preset comprises the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and the aperture of electric expansion valve.Therefore, the pressure-detecting device of the transducer air conditioning of the embodiment of the present invention can realize the accurate judgement of the system pressure to transducer air conditioning, avoid the system pressure that the uncertainty because of the aperture etc. of the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve causes cannot judge, and this detection method is simple and reliable, offers convenience to maintenance conditions.
In addition, embodiments of the invention also proposed a kind of transducer air conditioning, and it comprises above-mentioned pressure-detecting device.
This transducer air conditioning is by above-mentioned pressure-detecting device, the accurate judgement of system pressure can be realized, avoid the system pressure that the uncertainty because of the aperture etc. of the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve causes cannot judge, offer convenience to maintenance conditions.
Describe and can be understood in flow chart or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this description, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read-only storage (ROM), erasablely edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanner to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only storage, disk or CD etc.
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, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (11)
1. a pressure detection method for transducer air conditioning, is characterized in that, comprises the following steps:
S1, receives user instruction, and controls described transducer air conditioning according to described user instruction and enter pressure detecting pattern;
S2, after described transducer air conditioning enters described pressure detecting pattern, control described transducer air conditioning with the controling parameters preset to run, wherein, described default controling parameters comprises the aperture of the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and electric expansion valve;
S3, detects current indoor environment temperature and current outdoor environment temperature, and detects the system pressure value of described transducer air conditioning;
S4, the present mode of operation of described transducer air conditioning is obtained according to described user instruction, and obtain the system pressure threshold value of described transducer air conditioning according to the present mode of operation of described current indoor environment temperature, described current outdoor environment temperature and described transducer air conditioning, and judge whether the system pressure of described transducer air conditioning is in normal condition according to the system pressure threshold value of described transducer air conditioning and the system pressure value of described transducer air conditioning.
2. the pressure detection method of transducer air conditioning as claimed in claim 1, is characterized in that, control described transducer air conditioning and enter pressure detecting pattern, specifically comprise according to described user instruction:
Obtain setup parameter according to described user instruction, and control the startup of described transducer air conditioning according to described setup parameter;
After described transducer air conditioning starts, judge whether the number of times that the programmable button of described transducer air conditioning is triggered reaches preset times according to described user instruction;
If so, then control described transducer air conditioning and enter described pressure detecting pattern.
3. the pressure detection method of transducer air conditioning as claimed in claim 2, is characterized in that,
When described setup parameter be refrigeration mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that described programmable button is triggered reaches described preset times, control described transducer air conditioning and enter described pressure detecting pattern with refrigerating state;
When described setup parameter be heating mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that described programmable button is triggered reaches described preset times, control described transducer air conditioning and enter described pressure detecting pattern to heat state.
4. the pressure detection method of transducer air conditioning as claimed in claim 1, it is characterized in that, described default controling parameters is specially: the frequency of described compressor is 50Hz, the rotating speed of described indoor fan is 1200rpm, the rotating speed of described outdoor fan is 800rpm, the aperture of described electric expansion valve is 200 steps.
5. the pressure detection method of transducer air conditioning as claimed in claim 1, is characterized in that, when below meeting during arbitrary condition, controls described transducer air conditioning and exits described pressure detecting pattern:
(1) time that described transducer air conditioning enters described pressure detecting pattern reaches the first Preset Time;
(2) described transducer air conditioning receives shutdown command;
(3) described transducer air conditioning receives pattern switching command.
6. a pressure-detecting device for transducer air conditioning, is characterized in that, comprising:
Receiver module, for receiving user instruction;
Temperature detecting module, for detecting current indoor environment temperature and current outdoor environment temperature;
Pressure detecting module, for detecting the system pressure value of described transducer air conditioning;
Control module, pressure detecting pattern is entered for controlling described transducer air conditioning according to described user instruction, and the operation of described transducer air conditioning is controlled with the controling parameters preset after described transducer air conditioning enters described pressure detecting pattern, and the present mode of operation of described transducer air conditioning is also obtained according to described user instruction, and according to described current indoor environment temperature, the present mode of operation of described current outdoor environment temperature and described transducer air conditioning obtains the system pressure threshold value of described transducer air conditioning, and judge whether the system pressure of described transducer air conditioning is in normal condition according to the system pressure threshold value of described transducer air conditioning and the system pressure value of described transducer air conditioning, wherein, described default controling parameters comprises the frequency of compressor, the rotating speed of indoor fan, the rotating speed of outdoor fan and the aperture of electric expansion valve.
7. the pressure-detecting device of transducer air conditioning as claimed in claim 6, it is characterized in that, described control module obtains setup parameter according to described user instruction further, and control the startup of described transducer air conditioning according to described setup parameter, and after described transducer air conditioning starts, according to described user instruction, described control module judges whether the number of times that the programmable button of described transducer air conditioning is triggered reaches preset times, and when the number of times judging that described programmable button is triggered reaches described preset times, described control module controls described transducer air conditioning and enters described pressure detecting pattern.
8. the pressure-detecting device of transducer air conditioning as claimed in claim 7, it is characterized in that, when described setup parameter be refrigeration mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and the number of times that described programmable button is triggered is when reaching described preset times, controls described transducer air conditioning and enter described pressure detecting pattern with refrigerating state;
When described setup parameter be heating mode parameter, high wind shelves parameter, design temperature be 25 DEG C, and when the number of times that described programmable button is triggered reaches described preset times, control described transducer air conditioning and enter described pressure detecting pattern to heat state.
9. the pressure-detecting device of transducer air conditioning as claimed in claim 6, it is characterized in that, described default controling parameters is specially: the frequency of described compressor is 50Hz, the rotating speed of described indoor fan is 1200rpm, the rotating speed of described outdoor fan is 800rpm, the aperture of described electric expansion valve is 200 steps.
10. the pressure-detecting device of transducer air conditioning as claimed in claim 6, is characterized in that, when below meeting during arbitrary condition, described control module controls described transducer air conditioning and exits described pressure detecting pattern:
(1) time that described transducer air conditioning enters described pressure detecting pattern reaches the first Preset Time;
(2) described receiver module receives shutdown command;
(3) described receiver module receives pattern switching command.
11. 1 kinds of transducer air conditionings, is characterized in that, comprise the pressure-detecting device according to any one of claim 6-10.
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