CN104034998B - Diagnostic method and diagnostic system for mistaken line connection of indoor and outdoor units of fixed frequency air conditioners - Google Patents
Diagnostic method and diagnostic system for mistaken line connection of indoor and outdoor units of fixed frequency air conditioners Download PDFInfo
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- CN104034998B CN104034998B CN201410280402.1A CN201410280402A CN104034998B CN 104034998 B CN104034998 B CN 104034998B CN 201410280402 A CN201410280402 A CN 201410280402A CN 104034998 B CN104034998 B CN 104034998B
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Abstract
The invention provides a diagnostic method and a diagnostic system for mistaken line connection of indoor and outdoor units of fixed frequency air conditioners. The method comprises the steps of: detecting the temperature difference value of an indoor pipe before and behind entering each operation mode for a preset time period, when the fixed frequency air conditioner is in a cooling mode, a heating mode or an external fan operating mode, comparing the temperature difference values with preset temperature difference values to determine whether signal lines are mistakenly connected, and meanwhile diagnosing the mistakenly connected signal line; and therefore, a user is convenient to reconnect the line, the fixed frequency air conditioner is ensured to operate in a normal state, and quality and after-sale problems caused by mistaken connection of the signal lines can be avoided.
Description
Technical field
The present invention relates to fixed frequency air conditioner technical field, more particularly, it relates to a kind of fixed frequency air conditioner internal-external machine connecting line connects
Wrong diagnostic method and diagnostic system.
Background technology
Fixed frequency air conditioner internal-external machine connecting line is divided into power line (live wire and zero line) and holding wire (compressor line, cross valve line
With outer blower fan line), through the situation of wrong line often occurs after fixed frequency air conditioner is on sale, wherein, power line and holding wire wrong, fixed frequency is empty
After electricity on tune, interior machine controller is reactionless, and therefore this wrong line situation is easier to be diagnosed to be；And between holding wire during wrong,
Often fixed frequency air conditioner can also run, thus it is not easy to be diagnosed to be.And, once the situation of wrong line in holding wire, can be by
Lead to the generation of much unexpected problems in the confusion that air conditioning system is run, for example, when cross valve is reversed with outer blower fan, in system
When heat pattern enters high temperature-proof protection, cross valve can be treated as outer blower fan and directly be cut off, now, due to system pressure also not
Balance will lead to cross valve abnormal sound even to damage.Therefore, how to provide a kind of diagnosis of fixed frequency air conditioner internal-external machine connecting line wrong
Method and diagnostic system, are those skilled in the art's skills urgently to be resolved hurrily with the situation being diagnosed to be internal-external machine connecting line wrong in time
Art problem.
Content of the invention
In view of this, the present invention provides a kind of diagnostic method of fixed frequency air conditioner internal-external machine connecting line wrong and diagnostic system,
To solve the problems, such as that prior art cannot find holding wire wrong in time, thus ensureing operation of constant-frequency air conditioner in normal state
When, prevent the quality problems that cause because of holding wire wiring error and problem after sale.
A kind of diagnostic method of fixed frequency air conditioner internal-external machine connecting line wrong, comprising:
In test/trial running mode, acquisition fixed frequency air conditioner is compared after entering refrigeration mode first preset time period and is had just enter into this
First temperature approach of indoor pipe during refrigeration mode；
If described first temperature approach is more than the first fiducial temperature value, it is diagnosed to be the connecting line of outer blower fan and the company of cross valve
Wiring is reversed；
In test/trial running mode, obtain described fixed frequency air conditioner and compare this refrigeration mode of entrance the when having just enter into refrigeration mode
Second temperature approach of described indoor pipe after two preset time period；
If described second temperature approach is less than the second fiducial temperature value, described fixed frequency air conditioner is changed by current refrigeration mode
For heating mode；
Obtain described fixed frequency air conditioner enter heating mode the 3rd preset time period after compare have just enter into this heating mode when
3rd temperature approach of described indoor pipe；
If described 3rd temperature approach is less than the 3rd fiducial temperature value, it is diagnosed to be the connecting line of compressor and the company of cross valve
Wiring is reversed；
In test/trial running mode, entrance compared by the described fixed frequency air conditioner of acquisition when having just enter into only outer blower fan operational mode, and this is outer
4th temperature approach of described indoor pipe after fan operation pattern the 4th preset time period；
If described 4th temperature approach is more than the 4th fiducial temperature value, it is diagnosed to be the connecting line of compressor and the company of outer blower fan
Wiring is reversed.
Preferably, reversed with the connecting line of cross valve in the connecting line being diagnosed to be outer blower fan, or the connecting line of compressor with
After the connecting line of cross valve is reversed, or the connecting line of compressor is reversed with the connecting line of outer blower fan, also include:
Control all loads of described fixed frequency air conditioner out of service.
Preferably, also include:
The display controlling described fixed frequency air conditioner shows corresponding failure code according to diagnostic result.
Preferably, described first preset time period, described second preset time period, described 3rd preset time period and described
4th preset time period differs entirely.
Preferably, described first temperature approach, described second temperature approach, described 3rd temperature approach and described 4th temperature approach are complete
Differ.
A kind of diagnostic system of fixed frequency air conditioner internal-external machine connecting line wrong, comprising:
First acquisition unit, in test/trial running mode, obtaining fixed frequency air conditioner when entrance refrigeration mode first is preset
Between compare the first temperature approach of indoor pipe when having just enter into this refrigeration mode after section；
Whether the first judging unit, for judging described first temperature approach more than the first fiducial temperature value；
First diagnosis unit, if exceeding described first fiducial temperature value for described first temperature approach, is diagnosed to be exogenous wind
The connecting line of machine is reversed with the connecting line of cross valve；
Second acquisition unit, if be not above described first fiducial temperature value for described first temperature approach, in test run
In row mode, after this refrigeration mode second preset time period of entrance compared by the described fixed frequency air conditioner of acquisition when having just enter into refrigeration mode
Second temperature approach of described indoor pipe；
Converting unit, if be less than the second fiducial temperature value for described second temperature approach, by described fixed frequency air conditioner by current
Refrigeration mode be converted to heating mode；
3rd acquiring unit, compares just after entering heating mode the 3rd preset time period for obtaining described fixed frequency air conditioner
Enter the 3rd temperature approach of described indoor pipe during this heating mode；
Second judging unit, for judging whether described 3rd temperature approach is less than the 3rd fiducial temperature value；
Second opinion unit, if being less than described 3rd fiducial temperature value for described 3rd temperature approach, is diagnosed to be compression
The connecting line of machine is reversed with the connecting line of cross valve；
4th acquiring unit, if be not less than described 3rd fiducial temperature value for described 3rd temperature approach, in trial operation
In pattern, obtain described fixed frequency air conditioner and compare this outer blower fan operational mode the 4th of entrance when having just enter into only outer blower fan operational mode
4th temperature approach of described indoor pipe after preset time period；
Whether the 3rd judging unit, for judging described 4th temperature approach more than the 4th fiducial temperature value；
3rd diagnosis unit, if exceeding described 4th fiducial temperature value for described 4th temperature approach, is diagnosed to be compression
The connecting line of machine is reversed with the connecting line of outer blower fan；
Returning unit, if being not above described 4th fiducial temperature value for described 4th temperature approach, returns described
One acquiring unit.
Preferably, also include:
First control unit, for being diagnosed to be the connecting line of outer blower fan and the connection of cross valve in described first diagnosis unit
Line is reversed, or described second opinion unit diagnosis go out compressor connecting line reversed with the connecting line of cross valve, or the described 3rd
Diagnosis unit be diagnosed to be the connecting line of compressor reversed with the connecting line of outer blower fan after, control all negative of described fixed frequency air conditioner
Carry out of service.
Preferably, also include:
Second control unit, the display for controlling described fixed frequency air conditioner shows corresponding fault generation according to diagnostic result
Code.
Preferably, described first preset time period, described second preset time period, described 3rd preset time period and described
4th preset time period differs entirely.
Preferably, described first temperature approach, described second temperature approach, described 3rd temperature approach and described 4th temperature approach are complete
Differ.
It can be seen from above-mentioned technical scheme that, the invention provides the examining of a kind of fixed frequency air conditioner internal-external machine connecting line wrong
Disconnected method and diagnostic system, by detecting fixed frequency air conditioner in refrigeration mode, heating mode or outer blower fan operational mode, indoor pipe
Temperature approach before and after entering every kind of operational mode preset time period, and this temperature approach compares knot with the size of fiducial temperature value
Fruit, to determine holding wire whether wrong, can also be diagnosed to be the holding wire of wrong simultaneously, such that it is able to facilitate user to reconnect,
Ensure operation of constant-frequency air conditioner in normal condition, prevent the quality problems that cause because of holding wire wiring error and problem after sale.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of diagnostic method flow chart of fixed frequency air conditioner internal-external machine connecting line wrong disclosed in the embodiment of the present invention；
Fig. 2 shows for a kind of structure of the diagnostic system of fixed frequency air conditioner internal-external machine connecting line wrong disclosed in the embodiment of the present invention
It is intended to；
Fig. 3 shows for a kind of structure of the diagnostic system of fixed frequency air conditioner internal-external machine connecting line wrong disclosed in the embodiment of the present invention
It is intended to；
Fig. 4 shows for a kind of structure of the diagnostic system of fixed frequency air conditioner internal-external machine connecting line wrong disclosed in the embodiment of the present invention
It is intended to.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the invention discloses a kind of diagnostic method of fixed frequency air conditioner internal-external machine connecting line wrong and diagnostic system, with
Solve the problems, such as that prior art cannot find holding wire wrong in time, thus ensureing operation of constant-frequency air conditioner in normal state,
Prevent the quality problems that cause because of holding wire wiring error and problem after sale.
Referring to Fig. 1, a kind of diagnostic method flow process of fixed frequency air conditioner internal-external machine connecting line wrong disclosed in the embodiment of the present invention
Figure, including step:
S11, in test/trial running mode, obtain fixed frequency air conditioner enter refrigeration mode first preset time period after compare just to enter
First temperature approach of indoor pipe when entering this refrigeration mode；
Specifically, first, obtain the first initial temperature value t that air-conditioner with fixed frequency has just enter into indoor pipe during refrigeration mode10℃；
Secondly, obtain air-conditioner with fixed frequency in the first preset time period t1First temperature value t of this indoor pipe after min11℃；Finally, by
One temperature value t11DEG C deduct the first initial temperature value t10DEG C, obtain the first temperature approach.
If described first temperature approach of s12, more than the first fiducial temperature value, is diagnosed to be connecting line and the cross valve of outer blower fan
Connecting line reversed；
Wherein, the first fiducial temperature value t1DEG C size according to depending on practical situation, here of the present invention does not limit.
It will be appreciated by persons skilled in the art that when fixed frequency air conditioner is in refrigeration mode, under normal circumstances, indoor pipe
Temperature should be gradually lowered, the first temperature approach be less than zero, if judging the first temperature approach more than the first fiducial temperature value (first
Fiducial temperature value is positive integer), then show the holding wire wrong of fixed frequency air conditioner, the connecting line of specially outer blower fan and cross valve
Connecting line is reversed.
S13, in test/trial running mode, obtain described fixed frequency air conditioner compare when having just enter into refrigeration mode entrance this refrigeration mould
Second temperature approach of described indoor pipe after formula second preset time period；
Specifically, first, obtain the second initial temperature value t that air-conditioner with fixed frequency has just enter into indoor pipe during refrigeration mode22℃；
Secondly, obtain air-conditioner with fixed frequency in the second preset time period t20Second temperature value t of this indoor pipe after min23℃；Finally, by
Two initial temperature value t22DEG C deduct second temperature value t23DEG C, obtain the second temperature approach.
If described second temperature approach of s14 is less than the second fiducial temperature value, by described fixed frequency air conditioner by current refrigeration mode
Be converted to heating mode；
Wherein, the second fiducial temperature value t20DEG C size according to depending on practical situation, here of the present invention does not limit.
S15, obtain described fixed frequency air conditioner and compare after entering heating mode the 3rd preset time period and have just enter into this and heat mould
3rd temperature approach of described indoor pipe during formula；
Specifically, first, obtain the 3rd initial temperature value t that air-conditioner with fixed frequency has just enter into indoor pipe during heating mode24℃；
Secondly, obtain air-conditioner with fixed frequency in the 3rd preset time period t213rd temperature value t of this indoor pipe after min25℃；Finally, by
Three temperature value t25DEG C deduct the 3rd initial temperature value t24DEG C, obtain the 3rd temperature approach.
If described 3rd temperature approach of s16 is less than the 3rd fiducial temperature value, it is diagnosed to be connecting line and the cross valve of compressor
Connecting line reversed；
Wherein, the 3rd fiducial temperature value t21DEG C size according to depending on practical situation, here of the present invention does not limit.
It should be noted that cross valve is a kind of switching air conditioner refrigerating and the device heating, cross valve is in off-position
When, air-conditioning is in refrigerating state；When cross valve is in "on" position, air-conditioning is in the state of heating.Therefore, when air-conditioning enters refrigeration
During pattern, if detecting, range of decrease degree at a temperature of indoor pipe (i.e. second temperature approach) is less than the second fiducial temperature value, does not reach
During to default temperature drop amplitude, then tentatively judge that the connecting line of cross valve is reversed；Then, by fixed frequency air conditioner by current system
Chill formula is converted to heating mode, if detecting, the temperature ascensional range (i.e. the 3rd temperature approach) of indoor pipe is less than the 3rd default temperature
Difference, that is, when being not reaching to default temperature elevation amplitude, then the connecting line of the connecting line and compressor that are diagnosed to be cross valve connects
Instead.
S17, in test/trial running mode, obtain described fixed frequency air conditioner compare entrance when having just enter into only outer blower fan operational mode
4th temperature approach of described indoor pipe after this outer blower fan operational mode the 4th preset time period；
Specifically, first, obtain the 4th initial temperature of indoor pipe when air-conditioner with fixed frequency has just enter into only outer blower fan operational mode
Angle value t30℃；Secondly, obtain air-conditioner with fixed frequency in the 4th preset time period t34th temperature value t of this indoor pipe after min31℃；
Finally, by the 4th initial temperature value t30DEG C deduct the 4th temperature value t31DEG C, obtain the 4th temperature approach.
Wherein, when the 4th temperature approach is more than zero, show the temperature drop of indoor pipe, conversely, when the 4th temperature approach is less than
When zero, show that the temperature of indoor pipe rises.
If described 4th temperature approach of s18, more than the 4th fiducial temperature value, is diagnosed to be the connecting line of compressor and outer blower fan
Connecting line reversed.
Wherein, the 4th fiducial temperature value t3DEG C size according to depending on practical situation, here of the present invention does not limit.
It will be appreciated by persons skilled in the art that when fixed frequency air conditioner enters only outer blower fan operational mode, normal condition
Under, the temperature of indoor pipe only has micro change, if detecting the range of temperature (i.e. the 4th temperature approach) of indoor pipe more than the
Four preset temperature value, then show that the connecting line of compressor is reversed with the connecting line of outer blower fan.
In summary it can be seen, the present invention passes through to detect fixed frequency air conditioner in refrigeration mode, heating mode or outer fan operation mould
During formula, temperature approach before and after entering every kind of operational mode preset time period for the indoor pipe, and this temperature approach and fiducial temperature value
Size comparative result to determine holding wire whether wrong, the holding wire of wrong can also be diagnosed to be, such that it is able to convenient simultaneously
User reconnects it is ensured that operation of constant-frequency air conditioner is in normal condition, prevents the quality causing because of holding wire wiring error from asking
Topic and after sale problem.
It should be noted is that, in the present embodiment, judge whether the connecting line of outer blower fan is connect with the connecting line of cross valve
Anti- process, judges the connecting line of the compressor process whether reversed with the connecting line of cross valve, and the company judging compressor
The wiring process whether reversed with the connecting line of outer blower fan, in practical implementation, does not have sequencing, that is, is not limited to this
Execution sequence disclosed in embodiment.
It is understood that for avoiding leading to operation of constant-frequency air conditioner chaotic due to holding wire wrong, so being diagnosed to be letter
After number line goes wrong, the loaded operation of institute need to be stopped, to facilitate user to reconnect.
Therefore, after execution of step s12 or execution of step s16 or execution of step s18, can also include walking
Suddenly；
Control all loads of described fixed frequency air conditioner out of service.
It will be appreciated by persons skilled in the art that quick failure judgement type for the convenience of the user, step can also be included:
The display controlling described fixed frequency air conditioner shows corresponding failure code according to diagnostic result.
Wherein, the wrong situation for unlike signal line adopts different failure codes, to remind user's line sequence wrong
Holding wire, thus correct the holding wire of line sequence wrong in time.
Preferably, failure code can for English alphabet and English alphabet combine or English alphabet with digital
Combination, here of the present invention do not limit.
It should be noted that the first preset time period in above-described embodiment, the second preset time period, the 3rd Preset Time
Section can differ it is also possible to partly identical entirely with the 4th time period, and the concrete value of each time period is depending on practical situation.
When different operational modes are in due to fixed frequency air conditioner, also difference is required to the amplitude of variation of temperature, therefore, above-mentioned
In embodiment, the first temperature approach, the second temperature approach, the 3rd temperature approach and the 4th temperature approach differ entirely.Certainly, some specific
In the case of, also it is not excluded for there are part identical feelings in the first temperature approach, the second temperature approach, the 3rd temperature approach and the 4th temperature approach
Condition.
Corresponding with said method embodiment, the invention also discloses the examining of a kind of fixed frequency air conditioner internal-external machine connecting line wrong
Disconnected system.
Referring to Fig. 2, a kind of knot of the diagnostic system of fixed frequency air conditioner internal-external machine connecting line wrong disclosed in the embodiment of the present invention
Structure schematic diagram, comprising:
First acquisition unit 21, presets in entrance refrigeration mode first in test/trial running mode, obtaining fixed frequency air conditioner
The first temperature approach of indoor pipe when having just enter into this refrigeration mode is compared after time period；
First diagnosis unit 22, if for described first temperature approach more than the first fiducial temperature value, be diagnosed to be outer blower fan
Connecting line reversed with the connecting line of cross valve；
Wherein, the first fiducial temperature value t1DEG C size according to depending on practical situation, here of the present invention does not limit.
It will be appreciated by persons skilled in the art that when fixed frequency air conditioner is in refrigeration mode, under normal circumstances, indoor pipe
Temperature should be gradually lowered, the first temperature approach be less than zero, if judging the first temperature approach more than the first fiducial temperature value (first
Fiducial temperature value is positive integer), then show the holding wire wrong of fixed frequency air conditioner, the connecting line of specially outer blower fan and cross valve
Connecting line is reversed.
Second acquisition unit 23, in test/trial running mode, obtaining described fixed frequency air conditioner when having just enter into refrigeration mode
Compare enter this refrigeration mode second preset time period after described indoor pipe the second temperature approach；
Converting unit 24, if for described second temperature approach be less than the second fiducial temperature value, by described fixed frequency air conditioner by work as
Front refrigeration mode is converted to heating mode；
Wherein, the second fiducial temperature value t20DEG C size according to depending on practical situation, here of the present invention does not limit.
3rd acquiring unit 25, compares after entering heating mode the 3rd preset time period for obtaining described fixed frequency air conditioner
Have just enter into the 3rd temperature approach of described indoor pipe during this heating mode；
Second opinion unit 26, if being less than the 3rd fiducial temperature value for described 3rd temperature approach, is diagnosed to be compressor
Connecting line reversed with the connecting line of cross valve；
Wherein, the 3rd fiducial temperature value t21DEG C size according to depending on practical situation, here of the present invention does not limit.
It should be noted that cross valve is a kind of switching air conditioner refrigerating and the device heating, cross valve is in off-position
When, air-conditioning is in refrigerating state；When cross valve is in "on" position, air-conditioning is in the state of heating.Therefore, when air-conditioning enters refrigeration
During pattern, if detecting, range of decrease degree at a temperature of indoor pipe (i.e. second temperature approach) is less than the second fiducial temperature value, does not reach
During to default temperature drop amplitude, then tentatively judge that the connecting line of cross valve is reversed；Then, by fixed frequency air conditioner by current system
Chill formula is converted to heating mode, if detecting, the temperature ascensional range (i.e. the 3rd temperature approach) of indoor pipe is less than the 3rd default temperature
Difference, that is, when being not reaching to default temperature elevation amplitude, then the connecting line of the connecting line and compressor that are diagnosed to be cross valve connects
Instead.
4th acquiring unit 27, is having just enter into only outer blower fan fortune in test/trial running mode, obtaining described fixed frequency air conditioner
Compare during row mode enter this outer blower fan operational mode the 4th preset time period after described indoor pipe the 4th temperature approach；
3rd diagnosis unit 28, if for described 4th temperature approach more than the 4th fiducial temperature value, be diagnosed to be compressor
Connecting line reversed with the connecting line of outer blower fan.
Wherein, the 4th fiducial temperature value t3DEG C size according to depending on practical situation, here of the present invention does not limit.
It will be appreciated by persons skilled in the art that when fixed frequency air conditioner enters only outer blower fan operational mode, normal condition
Under, the temperature of indoor pipe only has micro change, if detecting the range of temperature (i.e. the 4th temperature approach) of indoor pipe more than the
Four preset temperature value, then show that the connecting line of compressor is reversed with the connecting line of outer blower fan.
In summary it can be seen, the present invention passes through to detect fixed frequency air conditioner in refrigeration mode, heating mode or outer fan operation mould
During formula, temperature approach before and after entering every kind of operational mode preset time period for the indoor pipe, and this temperature approach and fiducial temperature value
Size comparative result to determine holding wire whether wrong, the holding wire of wrong can also be diagnosed to be, such that it is able to convenient simultaneously
User reconnects it is ensured that operation of constant-frequency air conditioner is in normal condition, prevents the quality causing because of holding wire wiring error from asking
Topic and after sale problem.
It should be noted is that, in the present embodiment, judge whether the connecting line of outer blower fan is connect with the connecting line of cross valve
Anti- process (i.e. first acquisition unit 21 and the first diagnosis unit 22), judges the connecting line of compressor and the connecting line of cross valve
Whether reversed process (i.e. second acquisition unit 23, converting unit 24, the 3rd acquiring unit 25 and second opinion unit 26), with
And (the 4th acquiring unit 27 and the 3rd diagnosis are single to judge the connecting line of the compressor process whether reversed with the connecting line of outer blower fan
Unit 28), in practical implementation, there is no sequencing, that is, be not limited to execution sequence disclosed in the present embodiment.
For optimizing above-described embodiment further, referring to Fig. 3, inside and outside a kind of fixed frequency air conditioner disclosed in another embodiment of the present invention
The structural representation of the diagnostic system of machine connecting line wrong, in conjunction with Fig. 2 and Fig. 3, also includes:
First control unit 29, for being diagnosed to be the connecting line of outer blower fan and the connection of cross valve in the first diagnosis unit 22
Line is reversed, or second opinion unit 26 be diagnosed to be compressor connecting line reversed with the connecting line of cross valve, or the 3rd diagnosis is single
After the connecting line of first 28 connecting lines being diagnosed to be compressor and outer blower fan is reversed, all loads of described fixed frequency air conditioner are controlled to stop
Only run.
It is understood that for avoiding leading to operation of constant-frequency air conditioner chaotic due to holding wire wrong, so being diagnosed to be letter
After number line goes wrong, the loaded operation of institute need to be stopped, to facilitate user to reconnect.
For optimizing above-described embodiment further, referring to Fig. 4, inside and outside a kind of fixed frequency air conditioner disclosed in another embodiment of the present invention
The structural representation of the diagnostic system of machine connecting line wrong, in conjunction with Fig. 3 and Fig. 4, also includes:
Second control unit 30, the display for controlling described fixed frequency air conditioner shows corresponding fault according to diagnostic result
Code.
Wherein, the wrong situation for unlike signal line adopts different failure codes, to remind user's line sequence wrong
Holding wire, thus correct the holding wire of line sequence wrong in time.
Preferably, failure code can for English alphabet and English alphabet combine or English alphabet with digital
Combination, here of the present invention do not limit.
It should be noted that the first preset time period in above-described embodiment, the second preset time period, the 3rd Preset Time
Section can differ it is also possible to partly identical entirely with the 4th time period, and the concrete value of each time period is depending on practical situation.
When different operational modes are in due to fixed frequency air conditioner, also difference is required to the amplitude of variation of temperature, therefore, above-mentioned
In embodiment, the first temperature approach, the second temperature approach, the 3rd temperature approach and the 4th temperature approach differ entirely.Certainly, some specific
In the case of, also it is not excluded for there are part identical feelings in the first temperature approach, the second temperature approach, the 3rd temperature approach and the 4th temperature approach
Condition.
It should be noted that the same embodiment of the method for the concrete operating principle of each ingredient in system embodiment, herein not
Limit.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (10)
1. a kind of diagnostic method of fixed frequency air conditioner internal-external machine connecting line wrong is it is characterised in that include:
In test/trial running mode, acquisition fixed frequency air conditioner is compared after entering refrigeration mode first preset time period and is had just enter into this refrigeration
First temperature approach of indoor pipe during pattern；
If described first temperature approach is positive integer, the connecting line being diagnosed to be outer blower fan is reversed with the connecting line of cross valve；
In test/trial running mode, it is pre- that this refrigeration mode second of entrance compared by the described fixed frequency air conditioner of acquisition when having just enter into refrigeration mode
If the second temperature approach of described indoor pipe after the time period；
If described second temperature approach is less than the second fiducial temperature value, described fixed frequency air conditioner is converted to system by current refrigeration mode
Heat pattern；
Obtain described fixed frequency air conditioner to compare described in when having just enter into this heating mode after entering heating mode the 3rd preset time period
3rd temperature approach of indoor pipe；
If described 3rd temperature approach is less than the 3rd fiducial temperature value, it is diagnosed to be the connecting line of compressor and the connecting line of cross valve
Reversed；
In test/trial running mode, obtain described fixed frequency air conditioner and compare this outer blower fan of entrance when having just enter into only outer blower fan operational mode
4th temperature approach of described indoor pipe after operational mode the 4th preset time period；
If described 4th temperature approach is more than the 4th fiducial temperature value, it is diagnosed to be the connecting line of compressor and the connecting line of outer blower fan
Reversed.
2. diagnostic method according to claim 1 is it is characterised in that be diagnosed to be the connecting line of outer blower fan and cross valve
Connecting line is reversed, or the connecting line of compressor is reversed with the connecting line of cross valve, or the company of the connecting line of compressor and outer blower fan
After wiring is reversed, also include:
Control all loads of described fixed frequency air conditioner out of service.
3. diagnostic method according to claim 1 is it is characterised in that also include:
The display controlling described fixed frequency air conditioner shows corresponding failure code according to diagnostic result.
4. diagnostic method according to claim 1 it is characterised in that described first preset time period, described second preset
Time period, described 3rd preset time period and described 4th preset time period differ entirely.
5. diagnostic method according to claim 1 is it is characterised in that described first temperature approach, described second temperature approach, institute
State the 3rd temperature approach and described 4th temperature approach differs entirely.
6. a kind of diagnostic system of fixed frequency air conditioner internal-external machine connecting line wrong is it is characterised in that include:
First acquisition unit, is entering refrigeration mode first preset time period in test/trial running mode, obtaining fixed frequency air conditioner
Compare the first temperature approach of indoor pipe when having just enter into this refrigeration mode afterwards；
Whether the first judging unit, for judging described first temperature approach more than the first fiducial temperature value；
First diagnosis unit, if exceeding described first fiducial temperature value for described first temperature approach, is diagnosed to be outer blower fan
Connecting line is reversed with the connecting line of cross valve；
Second acquisition unit, if be not above described first fiducial temperature value for described first temperature approach, in trial operation mould
In formula, obtain described fixed frequency air conditioner compare when having just enter into refrigeration mode entrance this refrigeration mode second preset time period after described
Second temperature approach of indoor pipe；
Converting unit, if be less than the second fiducial temperature value for described second temperature approach, by described fixed frequency air conditioner by current system
Chill formula is converted to heating mode；
3rd acquiring unit, compares and has just enter into after entering heating mode the 3rd preset time period for obtaining described fixed frequency air conditioner
3rd temperature approach of described indoor pipe during this heating mode；
Second judging unit, for judging whether described 3rd temperature approach is less than the 3rd fiducial temperature value；
Second opinion unit, if being less than described 3rd fiducial temperature value for described 3rd temperature approach, is diagnosed to be compressor
Connecting line is reversed with the connecting line of cross valve；
4th acquiring unit, if be not less than described 3rd fiducial temperature value for described 3rd temperature approach, in test/trial running mode
In, the described fixed frequency air conditioner of acquisition is compared this outer blower fan operational mode the 4th of entrance and is preset when having just enter into only outer blower fan operational mode
4th temperature approach of described indoor pipe after time period；
Whether the 3rd judging unit, for judging described 4th temperature approach more than the 4th fiducial temperature value；
3rd diagnosis unit, if exceeding described 4th fiducial temperature value for described 4th temperature approach, is diagnosed to be compressor
Connecting line is reversed with the connecting line of outer blower fan；
Returning unit, if being not above described 4th fiducial temperature value for described 4th temperature approach, returning described first and obtaining
Take unit.
7. diagnostic system according to claim 6 is it is characterised in that also include:
First control unit, the connecting line of connecting line and cross valve for being diagnosed to be outer blower fan in described first diagnosis unit connects
Instead, or described second opinion unit diagnosis go out compressor connecting line reversed with the connecting line of cross valve, or described 3rd diagnosis
Unit diagnosis go out the connecting line of compressor reversed with the connecting line of outer blower fan after, control all loads of described fixed frequency air conditioner to stop
Only run.
8. diagnostic system according to claim 6 is it is characterised in that also include:
Second control unit, the display for controlling described fixed frequency air conditioner shows corresponding failure code according to diagnostic result.
9. diagnostic system according to claim 6 it is characterised in that described first preset time period, described second preset
Time period, described 3rd preset time period and described 4th preset time period differ entirely.
10. diagnostic system according to claim 6 it is characterised in that described first temperature approach, described second temperature approach,
Described 3rd temperature approach and described 4th temperature approach differ entirely.
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| CN105605734B (en) * | 2015-12-23 | 2018-12-25 | 珠海格力电器股份有限公司 | Determine the method and apparatus whether blower motor of air-conditioning inverts |
| CN105974263B (en) * | 2016-06-06 | 2019-07-30 | 珠海格力电器股份有限公司 | A kind of motor wrong line detector and method |
| CN106124915B (en) * | 2016-06-22 | 2019-01-22 | 珠海格力电器股份有限公司 | A kind of detection device and method of communication line misconnection |
| CN106556109B (en) * | 2016-11-11 | 2019-11-22 | 广东美的暖通设备有限公司 | The wireline inspection method of air-conditioning system and air-conditioning system |
| CN107576024A (en) * | 2017-09-27 | 2018-01-12 | 广东美的暖通设备有限公司 | Fault detection method, the apparatus and system of multi-online air-conditioning system |
| CN108397855B (en) * | 2018-03-20 | 2020-05-05 | 广东美的制冷设备有限公司 | Air conditioner fault detection method and device, air conditioner and storage medium |
| CN108828375B (en) * | 2018-08-17 | 2020-08-14 | 国网江苏省电力有限公司电力科学研究院 | Air conditioner electric monitoring system and method based on double-loop intelligent electric energy meter |
| CN109239521A (en) * | 2018-09-05 | 2019-01-18 | 格力电器（武汉）有限公司 | Wiring detection method and device |
| CN112798983B (en) * | 2020-12-30 | 2022-03-01 | 珠海格力电器股份有限公司 | Method and device for detecting connecting line of internal and external machines |
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