CN109297136A - A kind of expansion valve blocking determination method and air conditioner - Google Patents
A kind of expansion valve blocking determination method and air conditioner Download PDFInfo
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- CN109297136A CN109297136A CN201811355722.3A CN201811355722A CN109297136A CN 109297136 A CN109297136 A CN 109297136A CN 201811355722 A CN201811355722 A CN 201811355722A CN 109297136 A CN109297136 A CN 109297136A
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- expansion valve
- indoor unit
- temperature
- air conditioner
- blocking
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
-
- 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
Abstract
The present invention provides a kind of expansion valve blocking determination method and air conditioners.Wherein, expansion valve blocking determination method includes: liquid pipe temperature, tracheae temperature and the environment temperature that indoor unit is specified in the air conditioner for obtain refrigerating operaton；According to the liquid pipe temperature, tracheae temperature and environment temperature, in conjunction with the opening information of the expansion valve of the specified indoor unit, judge that expansion valve belonging to the expansion valve of the specified indoor unit blocks type；The expansion valve blocking type is shown, to overhaul.Expansion valve blocking determination method and air conditioner of the present invention can carry out the judgement of expansion valve blocking according to the operating parameter of air conditioner and block the classification of type, it is reported for repairment convenient for user, effective maintenance direction information can also be provided to maintenance people, avoid it is unnecessary tear machine open, improve maintenance efficiency.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of expansion valve blocking determination method and air conditioner.
Background technique
Expansion valve is the common restricting element of temperature regulation system.Especially exist, with the development of expansion valve technology, control
The electric expansion valve that precision processed is high, performance is stable is widely used in air conditioner indoor unit in recent years.
However, air-conditioning is since its project installation environment is bad, pipeline welds the factors such as oxide skin, cleanliness is difficult to ensure in air-conditioning
Card, inevitably, can exist in the pipeline of air-conditioning in fine impurity.And it subtle in these miscellaneous is easy to make in air conditioner chamber
The electric expansion valve (or valve front filter) of machine is blocked.It can be carried out problem investigation at this time, it may be necessary to carry out tearing machine open, still, when
Preceding air conditioner indoor unit is installed in furred ceiling layer more, it is cumbersome to be torn machine open, and doubtful expansion valve once occur, is not distinguished severity
It just carries out tearing machine investigation open.
Summary of the invention
In view of this, the present invention is directed to propose a kind of expansion valve blocks determination method, to improve the above problem.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of expansion valve blocking determination method is applied to air conditioner, and the expansion valve blocking determination method includes: to obtain system
Liquid pipe temperature, tracheae temperature and the environment temperature of indoor unit are specified in the air conditioner of cold operation；According to the liquid pipe temperature,
Tracheae temperature and environment temperature judge the specified indoor unit in conjunction with the opening information of the expansion valve of the specified indoor unit
Expansion valve belonging to expansion valve blocks type；The expansion valve blocking type is shown, to overhaul.
Further, described according to the liquid pipe temperature, tracheae temperature and environment temperature, in conjunction with the specified indoor unit
The opening information of expansion valve judges that the step of expansion valve belonging to the expansion valve blocks type includes: according to liquid pipe temperature, gas
Tube temperature degree and environment temperature judge whether blocking type belonging to the expansion valve of the specified indoor unit is to block entirely；Described
When the opening information of the expansion valve of specified indoor unit is not less than the described first default aperture threshold value, using based on the liquid pipe temperature
Degree, the obtained degree of superheat of tracheae temperature, judge expansion valve belonging to the expansion valve of the specified indoor unit block type whether be
Half blocks.
Further, described according to liquid pipe temperature, tracheae temperature and environment temperature, judge the expansion valve institute of specified indoor unit
It includes: to meet when between the liquid pipe temperature and the tracheae temperature that whether the blocking type of category, which is the mode blocked entirely, | Te1-
Te2|≤a, and meet between the liquid pipe temperature, tracheae temperature, environment temperature | (Te1+Te2)/2-Tao | when≤a, determine institute
Stating blocking type belonging to the expansion valve of specified indoor unit is full blocking；In, Te1Represent the liquid pipe temperature, Te2Described in representative
Tracheae temperature, Tao represent the environment temperature, and a represents preset first threshold.
Further, the air conditioner include by multiple indoor units at multi-gang air-conditioner, the air conditioner it is each
The corresponding expansion valve of a indoor unit, it is default not less than described first in the opening information of the expansion valve of the specified indoor unit
It is described using the degree of superheat obtained based on the liquid pipe temperature, tracheae temperature when aperture threshold value, judge the specified indoor unit
The step of whether the blocking type of expansion valve belonging to expansion valve is half blocking includes: according to the swollen of each of the acquisition indoor unit
The opening information of swollen valve calculates average opening value；When the average opening value not higher than the preset second default aperture threshold value and
The not low preset second threshold of the degree of superheat judges that the blocking of expansion valve belonging to the expansion valve of specified indoor unit type is
Half blocks.
Further, the step of expansion valve blocking type belonging to the expansion valve of the judgement specified indoor unit is also wrapped
It includes: when the opening information of the expansion valve of the specified indoor unit is not less than the described first default aperture threshold value, according to what is obtained
The tracheae temperature of each indoor unit calculates average air tube temperature degree；When the average opening value is default not higher than described second
Aperture threshold value, the degree of superheat meet 2 < D≤c and the tracheae temperature of the specified indoor unit and the average air tube temperature degree it
Between meetWhen, judge that the blocking type of expansion valve belonging to the expansion valve of the specified indoor unit blocks to be slight,
Wherein, D represents the degree of superheat, and c represents the second threshold, Te2The tracheae temperature is represented,Represent the average tracheae
Temperature, d represent preset third threshold value.
Further, the blocking type of the expansion valve belonging to the expansion valve for judging the specified indoor unit is slight blocking
Afterwards, the expansion valve blocks determination method further include: it is out of service to control the air conditioner；The specified indoor unit is controlled to force
Heating mode is switched to, the refrigerant in the air conditioner is made to flow counterflow through the corresponding expansion valve.
Further, the value range of the described second default aperture threshold value is between 250Pls to 400Pls；Described
The value range of two threshold values is between 4 DEG C to 10 DEG C；The value range of the third threshold value is between 2 DEG C to 6 DEG C.
Compared with the existing technology, expansion valve blocking determination method of the present invention has the advantage that
Expansion valve blocking determination method of the present invention specifies indoor unit pair by acquisition air conditioner in use
Liquid pipe temperature, tracheae temperature and the environment temperature answered, and the opening information of the expansion valve of specified indoor unit is combined, distinguish specified room
Expansion valve belonging to the expansion valve of interior machine blocks type, and shows to user.The judgement of the blocking to expansion valve in this way
And the classification of stopping state, it is reported for repairment convenient for user, effective maintenance direction information can also be provided to maintenance people, avoided not
It is necessary to tear machine open, improve maintenance efficiency.
Another object of the present invention is to propose a kind of air conditioner, to improve the above problem.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of air conditioner, the air conditioner include: acquisition unit, are specified in the air conditioner for obtaining refrigerating operaton
Liquid pipe temperature, tracheae temperature and the environment temperature of indoor unit；Processing unit, according to the liquid pipe temperature, tracheae temperature and environment
Temperature judges swollen belonging to the expansion valve of the specified indoor unit in conjunction with the opening information of the expansion valve of the specified indoor unit
Swollen valve plug plug type；Display unit shows the expansion valve blocking type, to overhaul.
Further, the processing unit is specifically used for: according to liquid pipe temperature, tracheae temperature and environment temperature, judging institute
State whether blocking type belonging to the expansion valve of specified indoor unit is to block entirely；In the aperture of the expansion valve of the specified indoor unit
When information is not less than the described first default aperture threshold value, using the degree of superheat obtained based on the liquid pipe temperature, tracheae temperature, sentence
The expansion valve belonging to the expansion valve of the specified indoor unit that breaks blocks whether type is half blocking.
Further, the air conditioner include by multiple indoor units at multi-gang air-conditioner, the air conditioner it is each
The corresponding expansion valve of a indoor unit, it is default not less than described first in the opening information of the expansion valve of the specified indoor unit
When aperture threshold value, the processing unit is specifically also used to: the opening information of each of foundation the obtains expansion valve of the indoor unit,
Calculate average opening value；When the average opening value not higher than the preset second default aperture threshold value and the degree of superheat it is not low pre-
If second threshold, judge that the blocking type of expansion valve belonging to the expansion valve of the specified indoor unit is half blocking.
Possessed advantage is identical compared with the existing technology with above-mentioned expansion valve blocking determination method for the air conditioner, herein
It repeats no more.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the step flow chart that expansion valve described in the embodiment of the present invention blocks determination method；
Fig. 2 is the partial structure diagram of indoor unit described in the embodiment of the present invention；
Fig. 3 is the sub-step flow chart of step S102 in Fig. 1；
Fig. 4 is the structural schematic diagram of air conditioner described in the embodiment of the present invention.
Description of symbols:
1- liquid pipe connection, 2- expansion valve, 3- liquid pipe temperature sensing package, 4- evaporator, 5- environment temperature sensing package, 6- tracheae temperature sensing package,
7- gas-tpe fitting, 8- air conditioner, 9- acquisition unit, 10- processing unit, 11- display unit.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In addition, the multi-connected machine that the air conditioner being previously mentioned in an embodiment of the present invention can be corresponding multiple indoor units is empty
It adjusts, is also possible to the conventional air-conditioning of only one indoor unit, preferably corresponds to the multi-gang air-conditioner of multiple indoor units.In the present invention
Embodiment in the specified indoor unit that is previously mentioned refer to the indoor unit of the air conditioner when air conditioner only has an indoor unit,
When air conditioner includes more indoor units, refer to one or more that user chooses from the corresponding indoor unit of the air conditioner.At this
The expansion valve blocking type being previously mentioned in the embodiment of invention, refers to the blocking type of pre-selection setting, may include full blocking, half
Blocking and slight blocking.The full blocking being previously mentioned in an embodiment of the present invention refers to that refrigerant cannot pass through expansion valve completely
The case where.Half blocking being previously mentioned in an embodiment of the present invention refers to that current expansion valve has blocking but can still have refrigeration
Agent can pass through the expansion valve and itself can not adjust the case where eliminating in the presence of blocking by air conditioner.In implementation of the invention
The slight blocking being previously mentioned in example refers to that current expansion valve has blocking but can still have refrigerant can be by the expansion valve
And can by air conditioner itself adjust eliminate there are stopping states.
In addition, the relational terms of term first and second or the like are used merely to an entity or operation and another
Entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this actual passes
System or sequence.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
First embodiment
Referring to FIG. 1, the embodiment of the invention provides a kind of expansion valves to block determination method, air conditioner 8 can be applied to.
Preferably, above-mentioned air conditioner 8 can be multi-gang air-conditioner, it is of course possible to understanding can be with other types air-conditioning, the present invention is real
It applies in example, for convenience of explanation, is described by taking multi-gang air-conditioner as an example.Optionally, above-mentioned expansion valve blocking determination method can
With the following steps are included:
Step S101 obtains liquid pipe temperature, tracheae temperature and the environment temperature that indoor unit is specified in the air conditioner 8 of refrigerating operaton
Degree.
In embodiments of the present invention, as shown in Fig. 2, multiple temperature is disposed to pass in each indoor unit of air conditioner 8
Sensor.Optionally, multiple temperature sensors may include the liquid pipe sense being set in the liquid pipe of connection expansion valve 2 and evaporator 4
Thermometer bulb 3, the tracheae temperature sensing package 6 being set on the tracheae of connection evaporator 4 and gas-tpe fitting 7, the ring for being set to 4 outside of evaporator
Border temperature sensing package 5.Above-mentioned liquid pipe temperature sensing package 3 can be used for acquiring the liquid pipe temperature of corresponding indoor unit, above-mentioned tracheae temperature sensing package 6
It can be used for acquiring the tracheae temperature of corresponding indoor unit, above-mentioned environment temperature sensing package 5 can be used for acquiring corresponding interior
The environment temperature of machine.When starting 8 normal refrigerating operaton of air conditioner, refrigerant enters each indoor unit from outdoor pusher side, and
Liquid pipe connection 1, expansion valve 2, evaporator 4, the gas-tpe fitting 7 for passing sequentially through each indoor unit, are eventually returned to outdoor unit.Herein
In the process, after the high pressure medium temperature refrigerant obtained after being condensed by outdoor unit flows through liquid pipe connection 1, pass through from expansion valve 2, become low
The refrigerant of warm low-pressure gas-liquid mixed state simultaneously enters evaporator 4, to carry out heat absorption, and flashes to gaseous refrigerant again
Outdoor unit is returned to by gas-tpe fitting 7.Above-mentioned multiple temperature sensors can be in 8 refrigerating operaton of air conditioner, acquisition pair respectively
Liquid pipe temperature, tracheae temperature and the environment temperature for the indoor unit answered.
Further, in 8 operational process of air conditioner, when an indoor unit is chosen to be specified indoor unit, start from peace
Multiple temperature sensors on specified indoor unit obtain the specified corresponding liquid pipe temperature of indoor unit, tracheae temperature and the environment
Temperature.As an implementation, the mode that the corresponding indoor unit of air conditioner 8 is chosen to be specified indoor unit be may is that into use
Family can be by sending the instruction of 2 jam detection of expansion valve to the corresponding indoor unit of air conditioner 8, and will receive the detection instruction
Indoor unit is as specified indoor unit.It will be understood, it can also be by other means from the corresponding indoor unit of air conditioner 8
Specified indoor unit is selected, is not limited this.For example, it is also possible to be that will start the indoor unit of operation in air conditioner 8 as specified
Indoor unit.It should be noted that in embodiments of the present invention, it is understood that there may be while there is the case where multiple specified indoor units, i.e.,
Make there are multiple specified indoor units, specifies the expansion valve 2 of indoor unit with the presence or absence of blocking and corresponding blocking type each
Judgement principle it is consistent, in embodiments of the present invention, for convenience of explanation, retouched by taking a specified indoor unit as an example
It states.
It further, can also be real while the liquid pipe temperature, tracheae temperature and environment temperature for obtaining specified indoor unit
When monitor specified indoor unit expansion valve 2 aperture.Preferably, above-mentioned expansion valve 2 be electric expansion valve 2, can in real time from
Expansion valve 2 reads its opening information, to realize the real-time monitoring of the aperture to the expansion valve 2 of specified indoor unit.
Step S102 is opened in conjunction with the expansion valve 2 of specified indoor unit according to liquid pipe temperature, tracheae temperature and environment temperature
Information is spent, judges that expansion valve belonging to the expansion valve 2 of the specified indoor unit blocks type.
It should be noted that in the related technology, when poor refrigerating efficiency occurs in air conditioner 8, user will do it complaint and report for repairment, so
And when being reported for repairment, it is only capable of then needing to lead to for maintenance personal to maintenance personal's offer this information of poor refrigerating efficiency
It crosses and tears whether machine investigation is the blocking of expansion valve 2 occur open, to carry out malfunction elimination, however tear machine open for being installed on furred ceiling layer mostly
It is inconvenient for interior indoor unit.If carrying out tearing machine open for all poor refrigerating efficiencies, on the one hand not blocking is made
At effect difference for have no effect, and wasting manpower and material resources；On the other hand, for not needing to tear machine open, being adjusted and transported by air conditioner 8
The blocking that row strategy can be solved, and very wasting manpower and material resources.
Therefore, in order to provide more reliable maintenance direction information to maintenance personnel, also for the wave for avoiding manpower and material resources
Take.In embodiments of the present invention, it not only needs through liquid pipe temperature, tracheae temperature and environment temperature, it is determined whether it blocks,
Herein in connection with the opening information of the expansion valve 2 of specified indoor unit, further judge belonging to expansion valve blocking type, so as to dimension
It repairs personnel and effective maintenance direction information is provided, to improve maintenance efficiency, reduce maintenance cost.
Optionally, as shown in figure 3, it is above-mentioned according to liquid pipe temperature, tracheae temperature and environment temperature, in conjunction with specified indoor unit
The opening information of expansion valve 2 judges that the step of expansion valve belonging to the expansion valve 2 of specified indoor unit blocks type may include:
Sub-step S1021 judges 2 institute of expansion valve of specified indoor unit according to liquid pipe temperature, tracheae temperature and environment temperature
Whether the blocking type of category is to block entirely.
In embodiments of the present invention, it can use and judge whether approach between liquid pipe temperature, tracheae temperature and environment temperature,
Determine expansion valve 2 whether in full blocking.When being in full blocking using expansion valve 2, tracheae, liquid pipe and the evaporator of indoor unit
Refrigerant is not had in 4 to pass through, corresponding indoor unit there will not be the principle of any refrigeration effect.As an implementation,
Meet between the liquid pipe temperature, tracheae temperature and environment temperature of acquisition it is preset close to condition, then it is believed that liquid pipe temperature, gas
It is approached between tube temperature degree and environment temperature.Therefore, if meeting between the liquid pipe temperature obtained, tracheae temperature and environment temperature default
Close to condition, then judge expansion valve belonging to the expansion valve 2 of the specified indoor unit blocking type be entirely block.
Further, it is determined that the mode of satisfaction close to condition can between above-mentioned liquid pipe temperature, tracheae temperature and environment temperature
To be:
Meet when between liquid pipe temperature and tracheae temperature | Te1-Te2|≤a, and liquid pipe temperature, tracheae temperature, environment temperature
Between meet | (Te1+Te2)/2-Tao | when≤a, determines and meet described approach between liquid pipe temperature, tracheae temperature and environment temperature
Condition.It should be noted that above-mentioned Te1Represent the liquid pipe temperature, Te2The tracheae temperature is represented, Tao represents the environment
Temperature, a represent preset first threshold.Optionally, above-mentioned first threshold is between 0 and 4, for example, first threshold can
To be chosen to be 2.
It will be understood, in other embodiments, can also judge liquid pipe temperature, tracheae temperature by other means
Whether approached between environment temperature.
It should be noted that process is directly entered step S103 after determination belongs to full blocking.As an implementation,
It is not belonging to block entirely by sub-step S1021 determination, then process enters sub-step S1022.
Sub-step S1022, when the opening information of the expansion valve 2 of specified indoor unit is not less than the first default aperture threshold value,
Using the degree of superheat obtained based on liquid pipe temperature, tracheae temperature, expansion valve belonging to the expansion valve 2 of the specified indoor unit is judged
Block whether type is half blocking.
In embodiments of the present invention, the above-mentioned first default aperture threshold value can be set as being more than the normal aperture model of expansion valve 2
Any one opening value enclosed.It is in normal open range it should be noted that stablizing in expansion valve 2, indoor unit can provide
Customer satisfaction system refrigeration effect.Preferably, it can be set to the maximum opening of expansion valve 2, for example, expansion valve 2 is just normally opened
Degree range is 100~300Pls, then the first default aperture threshold value can be set to 480Pls.
Further, since the expansion valve 2 in half blocking is in 8 course of work of air conditioner, with unplugged expansion valve 2
In comparison, smaller by its flow under same aperture, the degree of superheat is also bigger, simultaneously as air conditioner 8 can be based on overheat
The aperture of expansion valve 2 is adjusted in degree.Therefore, it is required to meet refrigeration, the aperture of the expansion valve 2 in half obstruction can be held
It is continuous to open big, to be expected that by more refrigerants, the degree of superheat is reduced, even if phenomenon can behave as electric expansion valve 2 and open to the maximum at this time
State, the degree of superheat are still very big.
Therefore, in embodiments of the present invention, if monitoring, expansion valve 2 reaches the first default aperture threshold value, is based on liquid pipe
Temperature, the corresponding degree of superheat of tracheae temperature computation, to judge whether to block in half according to the degree of superheat.Specifically, it calculated
The mode of temperature can be the difference between tracheae temperature and liquid pipe temperature to specify indoor unit as the corresponding degree of superheat.
Further, in order to exclude due to the refrigerant shortage in air conditioner 8 and the influence of double of judgment of clogging accuracy,
In embodiments of the present invention, based on the obtained corresponding degree of superheat, judge whether that the concrete mode in half blocking may include:
Obtain each current opening information of indoor unit expansion valve 2, and the expansion valve 2 of each indoor unit according to acquisition
Current opening information calculates average opening value.When average opening value not higher than the second default aperture threshold value and the degree of superheat it is not low
Preset second threshold judges that the blocking type of expansion valve belonging to the expansion valve 2 of the specified indoor unit blocks for half.It needs
Bright, the value range of the second default aperture threshold value is between 250Pls to 400Pls, for example, the second default aperture threshold value
It can be set to 300Pls, the value range of second threshold is between 4 DEG C to 10 DEG C, for example, second threshold can be set
It is set to 7 DEG C.It should be noted that process enters step S103 after judging to belong to half blocking.As an implementation,
After judging to be not belonging to half blocking, process can enter step S1023.
It should be noted that judging to belong to half blocking, and when the degree of superheat is exactly equal to second threshold, process can be with
Into sub-step S1023 to exclude the possibility whether slightly blocked, if not being slightly to block by sub-step S1023 judgement,
Then determine that corresponding blocking type is half obstruction.
Sub-step S1023, according to the corresponding multiple tracheae temperature of air conditioner 8, the overheat of average opening value, specified indoor unit
The opening information of degree and specified indoor unit, judges whether specified indoor unit belongs to slight blocking.
In embodiments of the present invention, it is not less than the first default aperture threshold in the opening information of the expansion valve 2 of specified indoor unit
When value, according to the tracheae temperature of each indoor unit obtained, average air tube temperature degree is calculated.When average opening value is pre- not higher than second
If aperture threshold value, the degree of superheat 2 < D≤c of satisfaction and the tracheae temperature of the specified indoor unit and the average air being calculated
Meet between tube temperature degreeWhen, judge that the blocking of expansion valve belonging to the expansion valve 2 of specified indoor unit type is
Slight blocking.Conversely, being confirmed as being not belonging to slightly blocking.
It should be noted that above-mentioned D represents the degree of superheat, c represents aforementioned second threshold, Te2Represent specified indoor unit
Tracheae temperature,The above-mentioned average air tube temperature degree being calculated is represented, d represents preset third threshold value.Optionally, third threshold value
Value range can be between 2 DEG C and 6 DEG C, for example, third threshold value can be set to 4 DEG C.
It should be noted that in other embodiments, can not have between above-mentioned sub-step S1021, S1022 and S1023
Inevitable sequencing.After belonging to slight blocking by sub-step S1023 determination, process enters step S103.
Further, when judging the specified corresponding blocking type of indoor unit slightly to block, above-mentioned expansion valve blocking is sentenced
The method of determining can also include: that first to control the air conditioner 8 out of service, then controls specified indoor unit pressure and switch to heating mould
Formula makes the refrigerant in air conditioner 8 flow counterflow through the corresponding expansion valve 2, i.e., refrigerant is entered expansion from outdoor pusher side
The mode of valve 2 becomes entering 2 mode of expansion valve from 4 side of evaporator.By the reverse flow of refrigerant, blocking impurity is rinsed.
Step S103 shows that expansion valve blocks type, to overhaul.
It, can after judging that the expansion valve 2 of specified indoor unit has blocking and determines blocking type in inventive embodiments
It is shown so that the blocking type judged is sent on the display terminal that user specifies by air conditioner 8.Above-mentioned display terminal
It can be the display screen being set on specified indoor unit, mobile terminal can also be bound with air conditioner 8 in advance.In this way to specified
Indoor unit expansion valve 2 can also be carried out with the presence or absence of blocking and affiliated blocking type without tearing machine open automatically.It can be intelligentized
Maintenance direction information is provided to maintenance personal, avoids executing unwanted maintenance operation, convenient for providing efficient maintenance service, is increased
Strong user experience.
Second embodiment
Referring to FIG. 4, the embodiment of the invention also provides a kind of air conditioners 8.Optionally, above-mentioned air conditioner 8 may include
Acquisition unit 9, processing unit 10 and display unit 11.Above-mentioned acquisition unit 9 is electrically connected with processing unit 10.Above-mentioned displaying list
It is connected between member 11 and processing unit 10, specifically, the connection between display unit 11 and processing unit 10, which can be, electrically to be connected
It connects, is also possible to communicate to connect.It should be noted that above-mentioned electric connection, which refers to, establishes display unit 11 and place by dielectric
The transmission channels between unit 10 are managed, to carry out signal transmitting between display unit 11 and processing unit 10.Above-mentioned communication link
Connecing can be through communication module, wirelessly establish signal transmission channels, so as to display unit 11 and processing unit
Signal transmitting is carried out between 10.
As an implementation, the corresponding acquisition unit 9 of each indoor unit, above-mentioned acquisition unit 9 may include
Multiple temperature sensors may include the liquid being set in the liquid pipe of connection expansion valve 2 and evaporator 4 in multiple temperature sensors
Pipe temperature sensing package 3, the tracheae temperature sensing package 6 being set on the tracheae of connection evaporator 4 and gas-tpe fitting 7 are set to 4 outside of evaporator
Environment temperature sensing package 5.Above-mentioned liquid pipe temperature sensing package 3 can be used for acquiring the liquid pipe temperature of corresponding indoor unit, above-mentioned tracheae sense
Thermometer bulb 6 can be used for acquiring the tracheae temperature of corresponding indoor unit, and above-mentioned environment temperature sensing package 5 can be used for acquiring corresponding
The environment temperature of indoor unit.
As an implementation, display unit 11 can be the display screen being arranged on the outside of indoor unit, be also possible in advance
Binding intelligent terminal (for example, mobile phone) is carried out with air conditioner 8.
As an implementation, processing unit 10 can be the CPU of air conditioner 8, with certain data processing energy
Power is convenient for analyzing and determining.
Further, in the embodiment of the present invention, above-mentioned acquisition unit 9, in the air conditioner 8 for obtaining refrigerating operaton
Liquid pipe temperature, tracheae temperature and the environment temperature of specified indoor unit.
Above-mentioned processing unit 10, according to the liquid pipe temperature, tracheae temperature and environment temperature, in conjunction with the specified indoor unit
Expansion valve 2 opening information, judge expansion valve belonging to the expansion valve 2 of the specified indoor unit block type.
Above-mentioned display unit 11 shows the expansion valve blocking type, to overhaul.
It is apparent to those skilled in the art that for convenience and simplicity of description, the air-conditioning of foregoing description
The specific work process of device 8, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In conclusion a kind of expansion valve blocking determination method provided in an embodiment of the present invention and air conditioner.Wherein, above-mentioned swollen
Swollen valve plug plug determination method is applied to air conditioner.Expansion valve blocking determination method includes: the air conditioner for obtaining refrigerating operaton
In specify indoor unit liquid pipe temperature, tracheae temperature and environment temperature；According to the liquid pipe temperature, tracheae temperature and environment temperature
Degree, in conjunction with the opening information of the expansion valve of the specified indoor unit, judges expansion belonging to the expansion valve of the specified indoor unit
Valve plug plug type；The expansion valve blocking type is shown, to overhaul.The judgement of the blocking to expansion valve in this way and stifled
The classification for filling in situation, is reported for repairment convenient for user, can also provide effective maintenance direction information to maintenance people, it is unnecessary to avoid
Tear machine open, improve maintenance efficiency.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of expansion valve blocks determination method, it is applied to air conditioner (8), which is characterized in that the expansion valve blocks judgement side
Method includes:
Obtain liquid pipe temperature, tracheae temperature and the environment temperature that indoor unit is specified in the air conditioner (8) of refrigerating operaton；
According to the liquid pipe temperature, tracheae temperature and environment temperature, in conjunction with the aperture letter of the expansion valve (2) of the specified indoor unit
Breath judges that expansion valve belonging to the expansion valve (2) of the specified indoor unit blocks type；
The expansion valve blocking type is shown, to overhaul.
2. expansion valve according to claim 1 blocks determination method, which is characterized in that it is described according to the liquid pipe temperature,
Tracheae temperature and environment temperature judge the expansion valve (2) in conjunction with the opening information of the expansion valve (2) of the specified indoor unit
Affiliated expansion valve blocks the step of type and includes:
According to liquid pipe temperature, tracheae temperature and environment temperature, blocking class belonging to the expansion valve (2) of the specified indoor unit is judged
Whether type is to block entirely；
When the opening information of the expansion valve (2) of the specified indoor unit is not less than the preset first default aperture threshold value, utilize
Based on the degree of superheat that the liquid pipe temperature, tracheae temperature obtain, expansion belonging to the expansion valve (2) of the specified indoor unit is judged
Whether valve plug plug type is half blocking.
3. expansion valve according to claim 2 blocks determination method, which is characterized in that described according to liquid pipe temperature, tracheae
Temperature and environment temperature judge whether blocking type belonging to the expansion valve (2) of specified indoor unit is that the mode blocked entirely includes:
Meet when between the liquid pipe temperature and the tracheae temperature | Te1-Te2|≤a, and the liquid pipe temperature, tracheae temperature,
Meet between environment temperature | (Te1+Te2)/2-Tao | when≤a, determine blocking belonging to the expansion valve (2) of the specified indoor unit
Type is full blocking；Wherein, Te1Represent the liquid pipe temperature, Te2The tracheae temperature is represented, Tao represents the environment temperature,
A represents preset first threshold.
4. expansion valve according to claim 2 blocks determination method, which is characterized in that the air conditioner (8) includes by more
A indoor units at multi-gang air-conditioner, the corresponding expansion valve (2) of each indoor unit of the air conditioner (8), in institute
It is described using based on institute when stating the opening information of the expansion valve (2) of specified indoor unit not less than the described first default aperture threshold value
It states liquid pipe temperature, the degree of superheat that tracheae temperature obtains, judges that expansion valve belonging to the expansion valve (2) of the specified indoor unit blocks
The step of whether type is half blocking include:
According to the opening information of each of the acquisition expansion valve (2) of the indoor unit, average opening value is calculated；
When the average opening value is not higher than the preset second default aperture threshold value and not low preset second threshold of the degree of superheat
Value judges that the blocking type of expansion valve belonging to the expansion valve (2) of the specified indoor unit blocks for half.
5. expansion valve according to claim 4 blocks determination method, which is characterized in that the judgement specified indoor unit
Expansion valve (2) belonging to expansion valve blocking type the step of further include:
When the opening information of the expansion valve (2) of the specified indoor unit is not less than the described first default aperture threshold value, foundation is obtained
Each of the indoor unit tracheae temperature, calculate average air tube temperature degree；
When the average opening value meets 2 < D≤c and the finger not higher than the described second default aperture threshold value, the degree of superheat
Determine to meet between the tracheae temperature of indoor unit and the average air tube temperature degreeWhen, judge the specified indoor unit
It is slight blocking that expansion valve belonging to expansion valve (2), which blocks type, wherein D represents the degree of superheat, and c represents second threshold
Value, Te2The tracheae temperature is represented,The average air tube temperature degree is represented, d represents preset third threshold value.
6. expansion valve according to claim 5 blocks determination method, which is characterized in that judging the specified indoor unit
It is the expansion valve blocking determination method after slight blocking that expansion valve belonging to expansion valve (2), which blocks type, further include:
It is out of service to control the air conditioner (8)；
It controls the specified indoor unit pressure and switches to heating mode, flow counterflow through the refrigerant in the air conditioner (8) pair
The expansion valve (2) answered.
7. expansion valve according to claim 6 blocks determination method, which is characterized in that the second default aperture threshold value
Value range is between 250Pls to 400Pls；The value range of the second threshold is between 4 DEG C to 10 DEG C；Described
The value range of three threshold values is between 2 DEG C to 6 DEG C.
8. a kind of air conditioner, which is characterized in that the air conditioner (8) includes:
Acquisition unit (9) specifies liquid pipe temperature, the tracheae temperature of indoor unit in the air conditioner (8) for obtaining refrigerating operaton
Degree and environment temperature；
Processing unit (10) is used for according to the liquid pipe temperature, tracheae temperature and environment temperature, in conjunction with the specified indoor unit
The opening information of expansion valve (2) judges that expansion valve belonging to the expansion valve (2) of the specified indoor unit blocks type；
Display unit (11), for showing the expansion valve blocking type, to overhaul.
9. air conditioner according to claim 8, which is characterized in that the processing unit (10) is specifically used for:
According to liquid pipe temperature, tracheae temperature and environment temperature, blocking class belonging to the expansion valve (2) of the specified indoor unit is judged
Whether type is to block entirely；
When the opening information of the expansion valve (2) of the specified indoor unit is not less than the first default aperture threshold value, using based on institute
It states liquid pipe temperature, the degree of superheat that tracheae temperature obtains, judges that expansion valve belonging to the expansion valve (2) of the specified indoor unit blocks
Whether type is half blocking.
10. air conditioner according to claim 9, which is characterized in that the air conditioner (8) include by multiple indoor units at
Multi-gang air-conditioner, the corresponding expansion valve (2) of each indoor unit of the air conditioner (8), in the specified indoor unit
Expansion valve (2) opening information be not less than the described first default aperture threshold value when, the processing unit (10) is specifically also used to:
According to the opening information of each of the acquisition expansion valve (2) of the indoor unit, average opening value is calculated；
When the average opening value is not higher than the preset second default aperture threshold value and not low preset second threshold of the degree of superheat
Value judges that the blocking type of expansion valve belonging to the expansion valve (2) of the specified indoor unit blocks for half.
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