CN109737572A - A kind of expansion valve control method and air conditioner - Google Patents
A kind of expansion valve control method and air conditioner Download PDFInfo
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- CN109737572A CN109737572A CN201910041258.9A CN201910041258A CN109737572A CN 109737572 A CN109737572 A CN 109737572A CN 201910041258 A CN201910041258 A CN 201910041258A CN 109737572 A CN109737572 A CN 109737572A
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Abstract
The present invention provides a kind of expansion valve control method and air conditioners, are related to air-conditioning technical field.Wherein, the expansion valve control method includes: to acquire indoor environment temperature and inner coil pipe temperature according to the preset time interval；When the indoor environment temperature of acquisition and inner coil pipe temperature meet preset over-voltage decision condition, control expansion valve, which executes, suddenly opens strategy.By indoor environment temperature and inner coil pipe temperature evaluation air conditioner whether over-voltage, and then expansion valve is suddenly opened, while ensuring air conditioner comfort, the overvoltage condition for improving air-conditioning continues, and avoids operating under long-term excess pressure load and damages to air-conditioning.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of expansion valve control method and air conditioner.
Background technique
Expansion valve is common restricting element in air-conditioning, and the stability of comfort and operation of air conditioner to air-conditioning all plays
Very important effect.
In air conditioner operational process, in order to ensure its comfort and operation stability, the aperture of meeting real-time monitoring expansion valve.
Currently, main adjusting foundation is the return-air degree of superheat or target exhaust when the aperture to expansion valve regulates and controls.Specifically
Ground controls expansion valve based on the return-air degree of superheat, refers to through variable expansion valve aperture, so that suction temperature and evaporator outlet temperature
Difference between degree is close to preset target difference, to ensure the comfort of air-conditioning；Expansion valve is controlled based on target exhaust, is referred to
By variable expansion valve aperture, so that delivery temperature optimal target exhaust temperature close under current working in real time.
Although being however, above two regulative mode may insure the comfort of air-conditioning in usual cases
It is poor to the real-time of feedback loading in the biggish situation of load of uniting, it also will increase system pressure to a certain extent.
Summary of the invention
Problems solved by the invention is in the biggish situation of system loading, and the adjustment process of expansion valve cannot be considered in terms of to being
The adjusting for pressure of uniting.
To solve the above problems, being applied to air conditioner, the expansion valve the present invention provides a kind of expansion valve control method
Control method includes: to acquire indoor environment temperature and inner coil pipe temperature according to the preset time interval；When the interior of acquisition
When environment temperature and inner coil pipe temperature meet preset over-voltage decision condition, control expansion valve, which executes, suddenly opens strategy.Pass through interior
Environment temperature and inner coil pipe temperature evaluation air conditioner whether over-voltage, and then expansion valve is suddenly opened, is ensuring air conditioner comfort
Meanwhile the overvoltage condition for improving air-conditioning continues, and operating under long-term excess pressure, high load capacity is avoided to damage air-conditioning.
Further, the over-voltage decision condition includes following combination at least between two: the indoor environment temperature
More than preset inner ring temperature threshold；The inner coil pipe temperature is more than preset inner tube temperature threshold value；Or current time interval
Temperature gap in the inner coil pipe temperature and an adjacent upper time interval inside obtained between collected inner coil pipe temperature is more than
Preset temperature change threshold value.It is thus possible to be accurately to identify whether air conditioner enters overvoltage condition.
Further, the control expansion valve execute the anxious step for opening strategy include: within each preset time cycle,
According to preset aperture step value, increase the aperture of the expansion valve, until the aperture variable quantity of the expansion valve is not less than
Default aperture threshold value.It is opened by anxious, reduces system pressure, and limit the aperture variable quantity of expansion valve, it is stable to ensure
Property.
Further, after the control expansion valve executes and suddenly opens strategy, the expansion valve control method further include: extensive
Second mining expansion valve described in conventional control policy control carries out aperture regulation, after realizing that system pressure reduces, can take into account air-conditioning
The temperature control effect and operation stability of device.
Further, described the step of acquiring indoor environment temperature and inner coil pipe temperature according to the preset time interval, wraps
It includes: the multiple indoor temperature values of continuous acquisition and multiple inner disc temperature values；Respectively to collected the multiple indoor temperature value and
Multiple inner disc temperature values are filtered；The indoor environment temperature is determined according to the indoor temperature value obtained after filtering
Degree；The inner coil pipe temperature is determined according to the inner disc temperature value obtained after filtering.Improve the accuracy of collected data.
Further, the step of being filtered to collected the multiple indoor temperature value includes: according to acquisition
Time sequencing, successively compare each described indoor temperature value and adjacent indoor temperature value；If the multiple room temperature
It include the indoor temperature value of the variable quantity between the adjacent indoor temperature value more than preset temperature threshold in value, then
Screen out the multiple indoor temperature value；It repeats the multiple indoor temperature values of continuous acquisition to be filtered, described in obtaining
It does not include institute of the variable quantity between the adjacent indoor temperature value more than preset temperature threshold in multiple indoor temperature values
State indoor temperature value.Avoid abnormal data influence caused by analysis result.
Further, the step of being filtered to collected the multiple inner disc temperature value includes: according to acquisition
Time sequencing, successively compare each described inner disc temperature value and adjacent inner disc temperature value；If the multiple inner disc temperature
Include inner disc temperature value of the variable quantity between the adjacent inner disc temperature value more than preset temperature threshold in value, then screens out
The multiple inner disc temperature value；The multiple inner disc temperature values of continuous acquisition are repeated to be filtered, it is the multiple until what is obtained
It does not include inner disc temperature of the variable quantity between the adjacent inner disc temperature value more than preset temperature threshold in inner disc temperature value
Angle value.Avoid abnormal data influence caused by analysis result.
To solve the above problems, the air conditioner includes acquisition unit and control the present invention also provides a kind of air conditioner
Unit, the acquisition unit and control unit are electrically connected, and described control unit also electrically connects with the expansion valve of the air conditioner
It connects；The acquisition unit acquires indoor environment temperature and inner coil pipe temperature according to the preset time interval, and is sent to the control
Unit processed；When the indoor environment temperature and inner coil pipe temperature of described control unit acquisition meet preset over-voltage decision condition
When, control expansion valve, which executes, suddenly opens strategy.By indoor environment temperature and inner coil pipe temperature evaluation air conditioner whether over-voltage, in turn
Expansion valve is suddenly opened, while ensuring air conditioner comfort, the overvoltage condition for improving air-conditioning continues, and avoids long-term excess pressure
The operating of load damages air-conditioning.
Further, the over-voltage decision condition includes following combination at least between two: the indoor environment temperature
More than preset inner ring temperature threshold；The inner coil pipe temperature is more than preset inner tube temperature threshold value；Or current time interval
Temperature gap in the inner coil pipe temperature and an adjacent upper time interval inside obtained between collected inner coil pipe temperature is more than
Preset temperature change threshold value.It is thus possible to be accurately to identify whether air conditioner enters overvoltage condition.
Further, described control unit is specifically used for: within each preset time cycle, according to preset aperture
Step value increases the aperture of the expansion valve, until the aperture variable quantity of the expansion valve is not less than default aperture threshold value, stops
It executes the urgency and opens strategy；And restore to carry out aperture regulation using expansion valve described in conventional control policy control.It is opened, is dropped by anxious
Low system pressure can take into account the temperature control effect and operation stability of air conditioner after realizing that system pressure reduces.
Detailed description of the invention
Fig. 1 is a kind of step flow chart of expansion valve control method provided in an embodiment of the present invention；
Fig. 2 is a seed step flow chart of step S101 in Fig. 1；
Fig. 3 is another seed step flow chart of step S101 in Fig. 1；
Fig. 4 is the structural schematic diagram of air conditioner provided in an embodiment of the present invention.
Description of symbols:
100- air conditioner；10- control unit；20- acquisition unit；30- expansion valve.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
First embodiment
Referring to FIG. 1, Fig. 1 shows a kind of expansion valve control method provided in an embodiment of the present invention, above-mentioned expansion valve control
Method processed can be applied to air conditioner 100 shown in Fig. 4.As shown in Figure 1, the step of above-mentioned expansion valve control method, includes:
Step S101 acquires indoor environment temperature and inner coil pipe temperature according to the preset time interval.
Above-mentioned indoor environment temperature is the temperature of the indoor unit local environment of air conditioner 100 in the current time interval of characterization
Information can be the temperature information that the temperature value based on real-time collected indoor unit local environment obtains.It should be understood that
Indoor temperature value is referred to as in order to facilitate the following temperature value by real-time collected indoor unit local environment of description.
Above-mentioned inner coil pipe temperature is the temperature information of the indoor heat exchanger of air conditioner 100 in the current time interval of characterization,
The temperature information that its coil temperature value that can be the indoor heat exchanger based on real-time collected air conditioner 100 obtains.It can be with
Understand, the coil temperature value for describing following collected indoor heat exchanger in real time for convenience is referred to as inner disc temperature value.
The interval duration of above-mentioned time interval can be preset, for example, a length of 60s when presetting interval, then from finger
Fix time and a little start, every 60s be a time interval.
In embodiments of the present invention, air conditioner 100 in each time interval respectively obtain indoor environment temperature and
Inner coil pipe temperature.Optionally, it is specified that above-mentioned time interval, which can be with the time point of the compressor starting operation of air conditioner 100,
The time interval at time point.It is, triggering collection unit 20 divides in each time interval after compressor start operation
Multiple indoor temperature values and multiple inner disc temperature values are not acquired.Again by the control unit 10 of air conditioner 100 be based on each when
Between be spaced in collected multiple indoor temperature values and multiple inner disc temperature values, determine corresponding indoor environment temperature and inner coil pipe
Temperature.
It is to be appreciated that acquisition unit 20 may include temperature sensor.Specifically, acquisition unit 20 may include being used for
The temperature sensor (hereinafter referred to as inner ring temperature sensor) for acquiring indoor temperature value, can also include for acquiring inner disc temperature
The temperature sensor (hereinafter referred to as inner disc temperature sensor) of value.As an implementation, for acquiring indoor temperature value
The shell in indoor unit can be set in temperature sensor, and the temperature sensor for acquiring inner disc temperature value can be set in interior
On the coil pipe of heat exchanger, for example, can be located at coil pipe middle position or 2/3 position of indoor heat exchanger.
It should be understood that the accuracy of indoor environment temperature and inner coil pipe temperature in order to improve, improves temperature and passes
Sensor collects influence of the abnormal data to entirely analyzing, can using any one following mode carry out indoor environment temperature and
The acquisition of inner coil pipe temperature.
As an implementation, as shown in Fig. 2, above-mentioned steps S101 may include following sub-step:
Sub-step S1011, the multiple indoor temperature values of continuous acquisition and multiple inner disc temperature values.
In embodiments of the present invention, in each postrun time interval of compressor start, by inner ring temperature sensing
Device is carried out continuously the acquisition of multiple temperature value, using as indoor temperature value；Multiple temperature value is carried out continuously by inner disc temperature sensor
Acquisition, using as inner disc temperature value.
Sub-step S1012 is respectively filtered collected multiple indoor temperature values and multiple inner disc temperature values.
In embodiments of the present invention, acquisition unit 20 has executed multiple room temperatures of one-time continuous in a time interval
After the acquisition of value and multiple inner disc temperature values, collected multiple indoor temperature values and multiple inner disc temperature values can be sent to
Control unit 10, control unit 10 are filtered the multiple indoor temperature values and multiple inner disc temperature values that receive, screen out
Abnormal data.
Sub-step S1013 determines the indoor environment temperature and according to filter according to the indoor temperature value obtained after filtering
The inner disc temperature value obtained after wave determines the inner coil pipe temperature.
In embodiments of the present invention, it can be and the indoor temperature value obtained after filtering be subjected to average value processing, to obtain room
Interior environment temperature.Specifically, indoor temperature value first can be subjected to A/D conversion, then averaged.
In embodiments of the present invention, it can be the inner coil pipe temperature that will be obtained after filtering and carry out average value processing, to obtain room
Interior environment temperature.Specifically, inner coil pipe temperature value first can be subjected to A/D conversion, then averaged.
Further, as another embodiment, above-mentioned steps S101 can be as shown in figure 3, include following sub-step
It is rapid:
Sub-step S1014, the multiple indoor temperature values of continuous acquisition and multiple inner disc temperature values.
In embodiments of the present invention, in each postrun time interval of compressor start, by inner ring temperature sensing
Device is carried out continuously the acquisition of multiple temperature value, using as indoor temperature value；Multiple temperature value is carried out continuously by inner disc temperature sensor
Acquisition, using as inner disc temperature value.
Sub-step S1015 successively compares each described indoor temperature value and adjacent room according to the time sequencing of acquisition
Interior temperature value.
In embodiments of the present invention, acquisition unit 20 has executed multiple room temperatures of one-time continuous in a time interval
After the acquisition of value, collected multiple indoor temperature values can be sent to control unit 10.By control unit 10 according to interior
The acquisition time sequence of temperature value, is ranked up the indoor temperature value received.And successively by each indoor temperature value with
Its adjacent indoor temperature value is compared.It is to be appreciated that adjacent indoor temperature value, which can be, is arranged in adjacent upper one
Indoor temperature value, be also possible to be arranged in the indoor temperature value of adjacent next bit.
Optionally, the above-mentioned manner of comparison to each indoor temperature value and adjacent indoor temperature value may is that calculating
Variable quantity between indoor temperature value and indoor temperature value adjacent thereto.For example, acquisition unit 20 is continuous in a time interval
Collected indoor temperature value is 26 DEG C, 25 DEG C, 27 DEG C and 25.5 DEG C respectively, then with 26 DEG C of adjacent Indoor Temperatures of indoor temperature value
Angle value is 25 DEG C, and 26 DEG C of the indoor temperature value variable quantities between adjacent indoor temperature value are 1 DEG C, is used as Indoor Temperature for 1 DEG C
26 DEG C of the angle value comparison results between adjacent indoor temperature value.Similarly, 25 DEG C of indoor temperature value and adjacent room temperature
Comparison result between value is 1 DEG C or 2 DEG C；27 DEG C of the indoor temperature value comparison results between adjacent indoor temperature value are
2 DEG C or 1.5 DEG C.25.5 DEG C of the indoor temperature value comparison results between adjacent indoor temperature value are 1.5 DEG C.
Sub-step S1016, if including that the variable quantity between adjacent indoor temperature value is more than in multiple indoor temperature values
The indoor temperature value of preset temperature threshold then screens out the multiple indoor temperature value.
In embodiments of the present invention, a temperature threshold can be preset, by the corresponding change of each indoor temperature value
Change amount is compared with the temperature threshold.It is more than temperature threshold if there is the corresponding variable quantity of at least one indoor temperature value,
Multiple indoor temperature values of above-mentioned acquisition are then abandoned, to realize the filtering processing to obtained indoor temperature value.
Meanwhile process returns to S1014, and the multiple indoor temperature values of continuous acquisition are repeated in same time interval and are filtered
Processing, until not including that the variable quantity between the adjacent indoor temperature value surpasses in obtained the multiple indoor temperature value
The indoor temperature value for crossing preset temperature threshold, then complete to filter, meanwhile, process enters S1019.It is to be appreciated that temperature
Quickly, the continuous temperature value acquisition of more wheels may be implemented in the acquisition speed of sensor for temperature value in same time interval.No
With the filtering depth in situation can speed control according to actual needs determine.
Example is connected, preset temperature threshold is 1.5 DEG C, the room temperature that acquisition unit 20 is arrived in a time interval continuous acquisition
Value is 26 DEG C, 25 DEG C, 27 DEG C and 25.5 DEG C respectively, and 25 DEG C of corresponding variable quantities of indoor temperature value include 2 DEG C, that is, is greater than temperature threshold
1.5 DEG C of value.Then by indoor temperature value: 26 DEG C, 25 DEG C, 27 DEG C and 25.5 DEG C discardings, triggering collection unit 20 is again current
It is acquired in time interval, it is, executing primary multiple continuous indoor temperature value acquisitions again in same time interval.
If the indoor temperature value resurveyed: 26 DEG C, 25 DEG C, 26 DEG C and 27 DEG C, the corresponding variable quantity of above-mentioned indoor temperature value is not
More than preset temperature threshold, then by indoor temperature value: 26 DEG C, 25 DEG C, 26 DEG C and 27 DEG C as the Indoor Temperature obtained after filtering
Angle value, meanwhile, process enters step S1019.
Sub-step S1017, according to the time sequencing of acquisition, successively compare each described inner disc temperature value with it is adjacent interior
Disk temperature value.
In embodiments of the present invention, acquisition unit 20 has executed multiple inner disc temperature of one-time continuous in a time interval
After the acquisition of value, collected multiple inner disc temperature values can be sent to control unit 10.By control unit 10 according to inner disc
The acquisition time sequence of temperature value, is ranked up the inner disc temperature value received.And successively by each inner disc temperature value with
Its adjacent inner disc temperature value is compared.It is to be appreciated that adjacent inner disc temperature value, which can be, is arranged in adjacent upper one
Inner disc temperature value, be also possible to be arranged in the inner disc temperature value of adjacent next bit.
Sub-step S1018, if in multiple inner disc temperature values including the variable quantity between the adjacent inner disc temperature value
More than the inner disc temperature value of preset temperature threshold, then the multiple inner disc temperature value is screened out.
In embodiments of the present invention, each corresponding variable quantity of inner disc temperature value is compared with the temperature threshold.
It is more than temperature threshold if there is at least one corresponding variable quantity of inner disc temperature value, then abandons multiple inner disc temperature of above-mentioned acquisition
Angle value, to realize the filtering processing to inner disc temperature value.Meanwhile process returns to S1014, the company of repetition in same time interval
The continuous multiple inner disc temperature values of acquisition are filtered, until not including and the phase in obtained the multiple inner disc temperature value
Variable quantity between adjacent inner disc temperature value is more than the inner disc temperature value of preset temperature threshold, is completed to inner disc temperature value
Filtering, process enter S1019.
Sub-step S1019 determines the indoor environment temperature and according to filter according to the indoor temperature value obtained after filtering
The inner disc temperature value obtained after wave determines inner coil pipe temperature.
In embodiments of the present invention, it can be and the indoor temperature value obtained after filtering be subjected to average value processing, to obtain room
Interior environment temperature.Specifically, indoor temperature value first can be subjected to A/D conversion, then averaged, using obtained mean value as
The corresponding indoor environment temperature of current time interval.
In embodiments of the present invention, it can be the inner coil pipe temperature that will be obtained after filtering and carry out average value processing, to obtain room
Interior environment temperature.Specifically, inner coil pipe temperature value first can be subjected to A/D conversion, then averaged, obtained mean value is made
For the corresponding inner coil pipe temperature of current time interval.
Step S102, when the indoor environment temperature of acquisition and inner coil pipe temperature meet preset over-voltage decision condition, control
Expansion valve 30 processed, which executes, suddenly opens strategy.
In embodiments of the present invention, it is described in case where air conditioner 100 heats.Specifically, according to acquisition
Indoor environment temperature and inner coil pipe temperature judge whether air conditioner 100 has entered higher load operation in current time interval
State.It is alternatively possible to by judging that indoor environment temperature and inner coil pipe temperature meet preset over-voltage decision condition.Further
Ground, the mode for meeting preset over-voltage decision condition includes following combination at least between two:
(1) indoor environment temperature is more than preset inner ring temperature threshold.It is to be appreciated that in environment temperature is greater than indoors
When ring temperature threshold, the system situation excessive there may be pressure can be determined.
(2) the inner coil pipe temperature is more than preset inner tube temperature threshold value.It is to be appreciated that being greater than in interior coil temperature interior
When pipe temperature threshold, the system that can determine is also likely to be present the excessive situation of pressure.
(3) collected inner coil pipe in the inner coil pipe temperature and an adjacent upper time interval obtained in current time interval
Temperature gap between temperature is more than preset temperature change threshold value.It is to be appreciated that when inner coil pipe temperature is with adjacent upper one
Between be spaced in temperature gap between collected inner coil pipe temperature when being more than preset temperature change threshold value, can determine system
Load variations are larger.
It is, as an implementation, can be and successively judge whether indoor environment temperature is more than preset inner ring
Whether temperature threshold, inner coil pipe temperature are more than the inner disc tube temperature obtained in preset inner tube temperature threshold value and current time interval
Whether the temperature gap in degree and an adjacent upper time interval between collected inner coil pipe temperature is more than that preset temperature becomes
Change threshold value.If determining above, result is to be more than, and determines that indoor environment temperature and inner coil pipe temperature meet preset over-voltage and sentence
Fixed condition.For example, inner ring temperature threshold is set as 20 DEG C, inner tube temperature threshold value is 57 DEG C and temperature change threshold value is 8 DEG C, currently
29 DEG C of indoor environment temperature, the inner coil pipe temperature 60 C that time interval obtains, the inner coil pipe that an adjacent upper time interval obtains
Temperature is 50 DEG C, then can be determined that the corresponding indoor environment temperature of current time interval and inner coil pipe temperature meet preset over-voltage
Decision condition.
It is to be appreciated that can determine that there may be pressure for system when indoor environment temperature is greater than inner ring temperature threshold
Excessive situation；Further, at this point, in inner coil pipe temperature and an adjacent upper time interval collected inner coil pipe temperature it
Between temperature gap also greater than temperature change threshold value, then judge that system loading changes greatly.Further, in conjunction with inner disc tube temperature
Degree illustrates that system at this time is in high pressure and the larger situation of load variations, needs to carry out swollen if it is greater than inner tube temperature threshold value
Swollen valve suddenly opens control, is otherwise maintained at current this high pressure and the biggish operating status of load variations will cause air conditioner 100
It influences.
As another embodiment, it can be and successively judge whether indoor environment temperature is more than preset inner ring temperature threshold
Whether value, inner coil pipe temperature are more than preset inner tube temperature threshold value.If determining above, result is to be more than, and determines indoor environment
Temperature and inner coil pipe temperature meet preset over-voltage decision condition.
In other possible embodiments, it can also be and successively judge whether inner coil pipe temperature is more than preset internal pipe temperature
Collected inner coil pipe temperature in the inner coil pipe temperature and an adjacent upper time interval obtained in degree threshold value, current time interval
Between temperature gap whether be more than preset temperature change threshold value.If determining above, result is to be more than, and determines to meet pre-
If over-voltage decision condition.
In other possible embodiments, it can also be and successively judge whether indoor environment temperature is more than preset inner ring
Collected inner disc in the inner coil pipe temperature and an adjacent upper time interval obtained in temperature threshold and current time interval
Whether the temperature gap between tube temperature degree is more than preset temperature change threshold value.If determining above, result is to be more than, and is determined
Indoor environment temperature and inner coil pipe temperature meet preset over-voltage decision condition.
It is to be appreciated that the embodiment of the present invention is to the combination of decision condition and without limitation.
Further, when environment temperature and inner coil pipe temperature meet preset over-voltage decision condition indoors, control expansion
Valve 30 executes the anxious mode for opening strategy and may is that within each preset time cycle, according to preset aperture step value, increases
The aperture of the big expansion valve 30.It optionally, can be swollen in order to maintain the heating effect and operation stability of air conditioner 100
The aperture variable quantity of swollen valve 30 is not less than default aperture threshold value.It is to be appreciated that i.e. after entering execution and suddenly opening strategy, each
The aperture of expansion valve 30 is increased with aperture step value in time cycle.For example, aperture step value is 15 steps, the time cycle
Length is 60s, and presetting aperture threshold value is 60 steps.After suddenly opening strategy into execution, the step number of expansion valve 30 is increased 15 every 60s
Step, after 4 time cycles, the aperture variable quantity of expansion valve 30 reaches 60 steps, then the 5th time cycle does not continue to out greatly
The aperture of expansion valve 30.Stop control expansion valve 30 to continue out greatly, to exit execution and suddenly open strategy.
Further, after the control expansion valve 30 executes and suddenly opens strategy, the expansion valve control method further include:
Restore to carry out aperture regulation using expansion valve 30 described in conventional control policy control.It is to be appreciated that conventional control strategy can be with
Be according to the aperture state for being the return-air degree of superheat or target exhaust variable expansion valve 30, improve 100 operational effect of air conditioner and
Operation stability.It is to be appreciated that sensitive can both be perceived in conjunction with the expansion valve control method that conventional control strategy obtains
System pressure and load variations situation, and can ensure that the operational effect and operation stability of air conditioner 100.
Second embodiment
Referring to FIG. 4, Fig. 4 shows a kind of air conditioner 100 provided in an embodiment of the present invention.As shown in figure 4, above-mentioned air-conditioning
Device 100 includes: acquisition unit 20 and control unit 10.
In embodiments of the present invention, acquisition unit 20 and control unit 10 are electrically connected, control unit 10 also with the sky
The expansion valve 30 of device 100 is adjusted to be electrically connected.Optionally, the expansion valve 30 of above-mentioned air conditioner 100 can be electric expansion valve.
In embodiments of the present invention, the acquisition unit 20 acquires indoor environment temperature and interior according to the preset time interval
Coil temperature, and it is sent to described control unit 10.
In embodiments of the present invention, when the indoor environment temperature and inner coil pipe temperature of the acquisition of described control unit 10 are full
When the preset over-voltage decision condition of foot, control expansion valve 30, which executes, suddenly opens strategy.Optionally, the over-voltage decision condition include with
Under combination at least between two: the indoor environment temperature is more than preset inner ring temperature threshold；The inner coil pipe temperature is super
Cross preset inner tube temperature threshold value；Or in the inner coil pipe temperature obtained in current time interval and an adjacent upper time interval
Temperature gap between collected inner coil pipe temperature is more than preset temperature change threshold value.Optionally, described control unit 10
It is specifically used for: within each preset time cycle, according to preset aperture step value, increases opening for the expansion valve 30
Degree, until the aperture variable quantity of the expansion valve 30 is not less than default aperture threshold value, stopping executes the urgency and opens strategy；And restore
Aperture regulation is carried out using expansion valve 30 described in conventional control policy control.
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 100, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In conclusion the embodiment of the invention provides a kind of expansion valve control method and air conditioners, wherein the expansion valve
Control method includes: to acquire indoor environment temperature and inner coil pipe temperature according to the preset time interval；When the interior of acquisition
When environment temperature and inner coil pipe temperature meet preset over-voltage decision condition, control expansion valve, which executes, suddenly opens strategy.Pass through interior
Environment temperature and inner coil pipe temperature evaluation air conditioner whether over-voltage, and then expansion valve is suddenly opened, is ensuring air conditioner comfort
Meanwhile the overvoltage condition for improving air-conditioning continues, and the operating of long-term excess pressure, high load capacity is avoided to damage air-conditioning.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and block diagram in attached drawing
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part of the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that function marked in the box can also be to be different from some implementations as replacement
The sequence marked in attached drawing occurs.For example, two continuous boxes can actually be basically executed in parallel, they are sometimes
It can execute in the opposite order, this depends on the function involved.It is also noted that every in block diagram and or flow chart
The combination of box in a box and block diagram and or flow chart can use the dedicated base for executing defined function or movement
It realizes, or can realize using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.It needs
Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with
Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities
The relationship or sequence on border.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of expansion valve control method, it is applied to air conditioner (100), which is characterized in that the expansion valve control method includes:
Indoor environment temperature and inner coil pipe temperature are acquired according to the preset time interval；
When the indoor environment temperature of acquisition and inner coil pipe temperature meet preset over-voltage decision condition, expansion valve is controlled
(30) it executes and suddenly opens strategy.
2. expansion valve control method as described in claim 1, which is characterized in that the over-voltage decision condition include it is following at least
Combination between two:
The indoor environment temperature is more than preset inner ring temperature threshold；
The inner coil pipe temperature is more than preset inner tube temperature threshold value；Or
In the inner coil pipe temperature that is obtained in current time interval and an adjacent upper time interval collected inner coil pipe temperature it
Between temperature gap be more than preset temperature change threshold value.
3. expansion valve control method as described in claim 1, which is characterized in that the control expansion valve (30), which executes, suddenly opens plan
Slightly the step of include:
Within each preset time cycle, according to preset aperture step value, increase the aperture of the expansion valve (30), directly
Aperture variable quantity to the expansion valve (30) is not less than default aperture threshold value.
4. expansion valve control method as claimed in claim 3, which is characterized in that execute anxious open in the control expansion valve (30)
After strategy, the expansion valve control method further include: restore to carry out using expansion valve (30) described in conventional control policy control
Aperture regulation.
5. expansion valve control method as described in claim 1, which is characterized in that the collection room according to the preset time interval
The step of interior environment temperature and inner coil pipe temperature includes:
The multiple indoor temperature values of continuous acquisition and multiple inner disc temperature values；
Collected the multiple indoor temperature value and multiple inner disc temperature values are filtered respectively；
The indoor environment temperature is determined according to the indoor temperature value obtained after filtering；
The inner coil pipe temperature is determined according to the inner disc temperature value obtained after filtering.
6. expansion valve control method as claimed in claim 5, which is characterized in that collected the multiple indoor temperature value
The step of being filtered include:
According to the time sequencing of acquisition, successively compare each described indoor temperature value and adjacent indoor temperature value；
If including the variable quantity between the adjacent indoor temperature value in the multiple indoor temperature value is more than preset temperature
The indoor temperature value of threshold value then screens out the multiple indoor temperature value；
It repeats the multiple indoor temperature values of continuous acquisition to be filtered, not wrapped until in obtained the multiple indoor temperature value
Include the indoor temperature value that the variable quantity between the adjacent indoor temperature value is more than preset temperature threshold.
7. expansion valve control method as claimed in claim 5, which is characterized in that collected the multiple inner disc temperature value
The step of being filtered include:
According to the time sequencing of acquisition, successively compare each described inner disc temperature value and adjacent inner disc temperature value；
If including the variable quantity between the adjacent inner disc temperature value in the multiple inner disc temperature value is more than preset temperature
The inner disc temperature value of threshold value then screens out the multiple inner disc temperature value；
It repeats the multiple inner disc temperature values of continuous acquisition to be filtered, not wrapped until in obtained the multiple inner disc temperature value
Include the inner disc temperature value that the variable quantity between the adjacent inner disc temperature value is more than preset temperature threshold.
8. a kind of air conditioner, which is characterized in that the air conditioner (100) includes acquisition unit (20) and control unit (10), institute
It states acquisition unit (20) and control unit (10) to be electrically connected, described control unit (10) is also swollen with the air conditioner (100)
Swollen valve (30) is electrically connected；
The acquisition unit (20) acquires indoor environment temperature and inner coil pipe temperature according to the preset time interval, and is sent to institute
State control unit (10)；
Item is determined when the indoor environment temperature and inner coil pipe temperature of described control unit (10) acquisition meet preset over-voltage
When part, control expansion valve (30), which executes, suddenly opens strategy.
9. air conditioner as claimed in claim 8, which is characterized in that the over-voltage decision condition includes following at least between two
Combination:
The indoor environment temperature is more than preset inner ring temperature threshold；
The inner coil pipe temperature is more than preset inner tube temperature threshold value；Or
In the inner coil pipe temperature that is obtained in current time interval and an adjacent upper time interval collected inner coil pipe temperature it
Between temperature gap be more than preset temperature change threshold value.
10. air conditioner as claimed in claim 8, which is characterized in that described control unit (10) is specifically used for:
Within each preset time cycle, according to preset aperture step value, increase the aperture of the expansion valve (30), directly
Aperture variable quantity to the expansion valve (30) is not less than default aperture threshold value, stops the execution urgency and opens strategy；And restore to adopt
The expansion valve described in conventional control policy control (30) carries out aperture regulation.
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| CN201910041258.9A CN109737572A (en) | 2019-01-16 | 2019-01-16 | A kind of expansion valve control method and air conditioner |
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| CN112944585A (en) * | 2021-02-20 | 2021-06-11 | 格力电器（合肥）有限公司 | Air conditioning equipment control method and device, air conditioning equipment and storage medium |
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Application publication date: 20190510 |