CN107477925A - The apparatus and method for detecting indoor apparatus of air conditioner and outdoor unit pipeline insulation layer fails - Google Patents
The apparatus and method for detecting indoor apparatus of air conditioner and outdoor unit pipeline insulation layer fails Download PDFInfo
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- CN107477925A CN107477925A CN201710681896.8A CN201710681896A CN107477925A CN 107477925 A CN107477925 A CN 107477925A CN 201710681896 A CN201710681896 A CN 201710681896A CN 107477925 A CN107477925 A CN 107477925A
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- degree
- superheat
- temperature
- air conditioner
- expansion valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
Indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails are detected the invention discloses a kind of, core is the provision of the 3rd super heat value, and the 3rd degree of superheat is the temperature sensor of compressor inlet and the temperature gap of indoor set air outlet temperature.By the 3rd super heat value compared with the default degree of superheat, judge whether air-conditioning duct fails by fiducial value.When the 3rd degree of superheat controls operation of air conditioner, by the aperture for finely tuning and tuning up or turn down electric expansion valve, it was found that the 3rd degree of superheat does not change or changed excessive, illustrate that insulating barrier is destroyed, the invention also discloses detection indoor apparatus of air conditioner and the method for outdoor unit pipeline insulation layer fails.In the present invention, the detection method of three degrees of superheat is employed, whether the insulating barrier that can detect the pipeline of indoor set and outdoor unit in real time has damaged, and detects quick and reliable results.Energy loss can be significantly reduced, there is larger application value.
Description
Technical field
The present invention relates to a kind of air conditioning control method, and in particular to one kind using the 3rd degree of superheat regulation electric expansion valve come
The apparatus and method for detecting indoor apparatus of air conditioner and outdoor unit pipeline insulation layer fails, belong to air conditioner controlling technology field.
Background technology
Air-conditioning has become a part for people's life, really improves people as refrigeration or heating equipment
The comfortableness of life.
In air-conditioning equipment, the method regulation air-conditioning equipment internal electron of the generally use control compressor air suction degree of superheat is swollen
Swollen valve opens or closes, so that equipment can be with normal operation.
Typically when actual suction superheat is more than target suction superheat, the aperture increase of electric expansion valve；It is actual to inhale
When the gas degree of superheat is less than target suction superheat, the aperture of electric expansion valve reduces；Actual suction superheat is equal to target air-breathing
During the degree of superheat, the aperture of electric expansion valve is constant.
In order to which control is better achieved, air-conditioning needs detection temperature, the function of air-conditioning is realized by this variable of temperature.
The biography for detecting the degree of superheat and degree of supercooling is equipped with if the technical scheme that Patent No. CN200910203600.7 is provided
Sensor and the injection expansion valve that sprayed refrigerant amount can be adjusted, thus refrigerating operaton time control refrigeration condenser outlet side
Degree of supercooling, and the degree of superheat of sprayed refrigerant is controlled during heating operation, so as to be sprayed in refrigerating operaton and heating operation
Most suitable refrigerant amount, so as to can ensure that the reliability of system under any cooling and warming service condition.
Such as, the technical scheme that Patent No. CN200710112061.7 is provided is a kind of method of electric expansion valve, prison
The open degree of electric expansion valve is controlled, while the open degree by changing electric expansion valve adjusts the degree of superheat；When electric expansion valve
When open degree is by abnormal change, modification determines the open degree calculation formula of open degree size；Calculated with according to the open degree of modification
Formula, adjust the open degree of electric expansion valve.
And for example, the technical scheme that Patent No. CN200510015731.4 is provided is a kind of control of compressor exhaust temperature
Method processed, pass through the stage for perceiving exhaust outlet of compressor temperature and being judged according to sensing results and being controlled.Perceive compressor
Exhaust port temperatures and the stage judged according to sensing results, have and judge whether exhaust outlet of compressor temperature is more than design temperature
Stage, when more than when, increase stage of the aperture of linear expansion valve.The technical scheme is that indoor set is exported at existing
On the basis of refrigerant pipe temperature is controlled, the control to exhaust outlet of compressor temperature is added.That is, when in exhaust port temperatures
In the case of too high, preferentially carry out reducing the linear expansion valve control logic of exhaust port temperatures.Avoid " degree of superheat satisfaction, but
Overall aperture is too small " un-reasonable phenomenon, make air-conditioning whole system operation more rationalize.
All it is the control and regulation that air-conditioning is carried out with the degree of superheat, without as other purposes in background technology；Meanwhile
Failure for pipeline also allows for.
But the connecting tube of the outdoor unit of air-conditioning and indoor set is easily influenceed by ambient temperature, discounting for
The influence, it will the effect of fine adjusting refrigerant flow rate occur.Past use method, be using increase by one layer of heat insulation layer come
Reduce external influence.But the passage of time at any time, the effect of heat insulation layer can be gradually reduced or destroyed, once damage
It is bad, how consumer is notified, this is badly in need of the technical problem solved, otherwise will cause the waste of the energy.At present still not compared with science,
The method that quickly whether detection insulating barrier is damaged or destroys.
The content of the invention
The defects of it is an object of the invention to overcome prior art, there is provided a kind of energy quick detection indoor apparatus of air conditioner and outdoor
The device of machine pipeline insulation layer fails.
What the present invention was realized in：
It is a kind of to detect indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails, including compressor, evaporator, condensation
Device, electric expansion valve and the indoor temperature transmitter being disposed in the interior on machine, in addition, also including CPU and two mistakes
The setting device of hot value,
Wherein, the super heat value of larger difference, for quickly freezing or heating, less super heat value, for electricity
Sub- expansion valve accurate adjustment；
The super heat value of larger difference, it is the temperature gap of evaporator outlet and entrance, the super heat value of smaller difference, is
The temperature sensor of evaporator rear portion and the temperature gap of evaporator outlet；
The core of the present invention is the provision of the 3rd super heat value, and the 3rd degree of superheat is the temperature of compressor inlet
Spend the temperature gap of sensor and indoor set air outlet temperature.Compared by the 3rd super heat value with the default degree of superheat
Compared with judging whether air-conditioning duct fails by fiducial value.
When the 3rd degree of superheat controls operation of air conditioner, by finely tuning and tuning up or turning down the aperture of electric expansion valve,
It was found that the 3rd degree of superheat does not change, (1 degree or 0 degree or so) or change excessive (when turning down, more than 4 degree), illustrate insulating barrier
Destroyed.
Further scheme is：
3rd super heat value includes the 3rd degree of superheat control unit, CPU, is arranged on evaporator outlet
2 temperature sensors set with medium position, or in the entrance of condenser and 2 temperature sensors of medium position.Institute
The temperature sampling cycle for the temperature sensor stated is 0.1~10 second, and CPU is according to 2 temperature on evaporator or condenser
The temperature gap of sensor is spent, calculates the degree of superheat or degree of supercooling and rate temperature change and direction, when indoor temperature senses
When the temperature of device detection is close to design temperature, CPU carries according to result of calculation to the open degree of electric expansion valve
Preceding adjustment control, it is 0~2 DEG C to control the degree of superheat or degree of supercooling；3rd degree of superheat is the air inlet temperature and evaporator of compressor
Difference of the outlet (during refrigeration), the 3rd degree of superheat operation of air conditioner for a period of time after, the aperture of electric expansion valve is adjusted.
Further scheme is：Opening for electric expansion valve is adjusted after air-conditioning, operation 10min in 3rd degree of superheat
Degree.
Further scheme is：Temperature sensor uses temperature sensors of high precision, and measurement accuracy is 0.1 DEG C~3 DEG C.
Further scheme is：When air-conditioning is shut down, compressor Delayed shutdown.
The present invention is driven, wherein electric expansion valve when carrying out aperture control to electric expansion valve using stepping motor
Control system include controller, sensor, transmitter, executing agency, input/output interface, drive circuit and display unit；
The output of controller is added in controlled system by output interface, executing agency；The controlled volume of control system, by sensor,
Transmitter, controller is sent to by input interface；Display unit is used for showing the degree of supercooling of operation.
Further scheme is：The CPU includes control unit, sensor unit, memory cell, held
Row unit, AD conversion unit, input-output unit, drive circuit unit and display unit.The output of controller unit is passed through
Output interface, executing agency, are added in controlled system；The controlled volume of control system, by sensor unit, AD conversion unit,
Control unit is sent to by input interface, the control unit controls the aperture of electric expansion valve；Display unit is used for showing operation
Degree of supercooling.
Disclosed herein as well is detection indoor apparatus of air conditioner and the method for outdoor unit pipeline insulation layer fails, using following step
Suddenly：
Step 1: tune up or turn down the aperture of electric expansion valve；
Step 2: and compared with default super heat value；
Step 3: according to real-time 3rd degree of superheat calculated compared with the default degree of superheat, CPU sends control
System instruction carries out adjustment control in advance to the open degree of electric expansion valve；
Step 4: when the 3rd degree of superheat does not change (1 degree or 0 degree or so) or changes excessive (when turning down, more than 4
Degree)；The feedback control of the 3rd degree of superheat is carried out, judges that the insulating barrier of the pipeline of indoor set and outdoor unit has damaged.
Further scheme is：Described detection method, it is after operation of air conditioner 10min, carries out the 3rd degree of superheat
Feedback control, judge whether the insulating barrier of the pipeline of indoor set and outdoor unit has damaged.
In the present invention, the detection method of three degrees of superheat is employed, the pipeline of indoor set and outdoor unit can be detected in real time
Whether insulating barrier has damaged, and detects quick and reliable results.Energy loss can be significantly reduced, there is larger popularization and application valency
Value.
Brief description of the drawings
Fig. 1 is the schematic device of present invention detection indoor apparatus of air conditioner and outdoor unit pipeline insulation layer fails；
Fig. 2 is the CPU schematic diagram of air-conditioning；
Fig. 3 is detection indoor apparatus of air conditioner and the method flow diagram of outdoor unit pipeline insulation layer fails.
Embodiment
Technical scheme is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, it is a kind of to detect indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails, including compression
Machine, evaporator, condenser, electric expansion valve and the indoor temperature transmitter being disposed in the interior on machine, in addition, also including centre
Unit and the setting device of two super heat values are managed,
Wherein, the super heat value of larger difference, for quickly freezing or heating, less super heat value, for electricity
Sub- expansion valve accurate adjustment；
The super heat value of larger difference, it is the temperature gap of evaporator outlet and entrance, the super heat value of smaller difference, is
The temperature sensor of evaporator rear portion and the temperature gap of evaporator outlet；
The core of the present invention is the provision of the 3rd super heat value, and the 3rd degree of superheat is the temperature of compressor inlet
Spend the temperature gap of sensor and indoor set air outlet temperature.Compared by the 3rd super heat value with the default degree of superheat
Compared with judging whether air-conditioning duct fails by fiducial value.
When the 3rd degree of superheat controls operation of air conditioner, by finely tuning and tuning up or turning down the aperture of electric expansion valve,
It was found that the 3rd degree of superheat does not change, (1 degree or 0 degree or so) or change excessive (when turning down, more than 4 degree), illustrate insulating barrier
Destroyed.
Further scheme is：
3rd super heat value includes the 3rd degree of superheat control unit, CPU, is arranged on evaporator outlet
2 temperature sensors set with medium position, or in the entrance of condenser and 2 temperature sensors of medium position.Institute
The temperature sampling cycle for the temperature sensor stated is 0.1~10 second, and CPU is according to 2 temperature on evaporator or condenser
The temperature gap of sensor is spent, calculates the degree of superheat or degree of supercooling and rate temperature change and direction, when indoor temperature senses
When the temperature of device detection is close to design temperature, CPU carries according to result of calculation to the open degree of electric expansion valve
Preceding adjustment control, it is 0~2 DEG C to control the degree of superheat or degree of supercooling；3rd degree of superheat is the air inlet temperature and evaporator of compressor
Difference of the outlet (during refrigeration), the 3rd degree of superheat operation of air conditioner for a period of time after, the aperture of electric expansion valve is adjusted.
The aperture of electric expansion valve is adjusted after air-conditioning, operation 10min in 3rd degree of superheat.
Temperature sensor uses temperature sensors of high precision, and measurement accuracy is 0.1 DEG C~3 DEG C.
When air-conditioning is shut down, compressor Delayed shutdown.
The present invention is driven, wherein electric expansion valve when carrying out aperture control to electric expansion valve using stepping motor
Control system include controller, sensor, transmitter, executing agency, input/output interface, drive circuit and display unit；
The output of controller is added in controlled system by output interface, executing agency；The controlled volume of control system, by sensor,
Transmitter, controller is sent to by input interface；Display unit is used for showing the degree of supercooling of operation.
The CPU include control unit, sensor unit, memory cell, execution unit, AD conversion unit,
Input-output unit, drive circuit unit and display unit.Output interface, executing agency are passed through in the output of controller unit,
It is added in controlled system；The controlled volume of control system, by sensor unit, AD conversion unit, control is sent to by input interface
Unit processed, the control unit control the aperture of electric expansion valve；Display unit is used for showing the degree of supercooling of operation.
As shown in Figure 2, the CPU includes control unit, sensor unit, memory cell, performs list
Member, AD conversion unit, input-output unit, drive circuit unit and display unit.The output of controller unit is by output
Interface, executing agency, are added in controlled system；The controlled volume of control system, by sensor unit, AD conversion unit, pass through
Input interface is sent to control unit, and the control unit controls the aperture of electric expansion valve；Display unit is used for showing the mistake of operation
Cold degree.
As shown in Figure 3, disclosed herein as well is detection indoor apparatus of air conditioner and outdoor unit pipeline insulation layer fails method,
Using following steps：
Step 1: tune up or turn down the aperture of electric expansion valve；
Step 2: and compared with default super heat value；
Step 3: according to real-time 3rd degree of superheat calculated compared with the default degree of superheat, CPU sends control
System instruction carries out adjustment control in advance to the open degree of electric expansion valve；
Step 4: when the 3rd degree of superheat does not change (1 degree or 0 degree or so) or changes excessive (when turning down, more than 4
Degree)；The feedback control of the 3rd degree of superheat is carried out, judges that the insulating barrier of the pipeline of indoor set and outdoor unit has damaged.
Further scheme is：Described detection method, it is after operation of air conditioner 10min, carries out the 3rd degree of superheat
Feedback control, judge whether the insulating barrier of the pipeline of indoor set and outdoor unit has damaged.
More specifically, as one embodiment of the present of invention, on the basis of original double degrees of superheat control, the 3rd is passed through
The aperture that the individual degree of superheat is fed back to control or reconcile electric expansion valve as one.Electric expansion valve can use stepping motor
It is driven, by certain pulse signal, such as the type of drive of three-phase six-beat or four phase eight beat, control stepping motor rotates forward
Or reversion, so as to complete the control to its aperture, and then control the flow of refrigerant.The control system of electric expansion valve is according to steaming
The information that hair device inlet and outlet, the temperature sensor at middle part are collected carrys out the aperture of control valve, coordinates compressor to adjust refrigeration at any time
The flow of agent.A feedback, further adjustment are used as by the use of the degree of superheat of compressor inlet and evaporator outlet (during refrigeration)
The aperture of electric expansion valve is finely tuned, reaches the temperature control more accurately controlled and the regulation of accurate cold medium flux.
Step motor electric electronic expanding valve part mainly includes valve body, stepper motor, control unit etc..In order to realize
Accurate temperature detection, the technical solution adopted by the present invention is the sampling period by reducing current temperature sensor, such as by it
Narrow down within 10 seconds；In order to accurately control the flow of refrigerant, it is necessary to the precision of temperature sensor is improved, as improved
0.1 degree of precision.If the precision of temperature sensor is inadequate, it can such as pass through temperature by certain technical measures --- electricity
The one-to-one relationship of contingency table is hindered, its precision is brought up to 0.1 degree of precision.
Electric expansion valve starts, and its can control cold medium flux, when its aperture is smaller, passes through the refrigerant of evaporator
Flow also very little.At this moment, the less refrigerant of flow is easy to become hot gas in evaporator, has one in evaporator exit
The fixed degree of superheat.As electronic expansion valve opening constantly increases, refrigerant flow is also being continuously increased, the heat exchange amount of evaporator
Gradually increase with the increase of cold medium flux.When expansion valve opening is further continued for increasing, when refrigerant flow increase to a certain extent
After, heat transfer boundary condition can not make refrigerant outlet have the degree of superheat, and outlet is in two-phase section, and at this moment the degree of superheat has connect
Zero is bordering on, uses past control method, it is easy to liquid hit phenomenon, i.e., original control method occurs, the degree of superheat can not enter one
The value of the reduction of step, the i.e. degree of superheat between 2 degree to 4 degree, it is the small value of its limit.The control of the 3rd degree of superheat is employed, is just considered
The influence of length of pipe has been arrived, and the aperture of electric expansion valve can be finely tuned, has reached the more purpose of accurate temperature controlling and feedback and goes out
Whether the insulating barrier of pipeline keeps destruction.
Present invention employs the 3rd degree of superheat, when the room temperature of air-conditioning is close to design temperature, is saved to realize, Huo Zhebao
Hold that room temperature is constant, by the accurate control to electric expansion valve, realize the accurate control of cold medium flux, make refrigerant in evaporator
Evaporating completely is fallen；Complete and air-conditioning is precisely controlled, reached energy-conservation and comfortable purpose.Certainly, the less degree of superheat
Output signal, the rotating speed of control compressor can be brought by becoming, makes compressor with suitable frequency run, so as to reach section
The purpose of energy.Meanwhile and the aperture of electric expansion valve can be finely tuned, reach the more purpose of accurate temperature controlling and feedback and go out pipeline
Whether insulating barrier is destroyed.
The type of drive of electric expansion valve be controller by calculating the parameter that sensor collects, to driving
Circuit sends regulating command, exports electric signal from driving plate to electric expansion valve, drives the action of electric expansion valve.
If air-conditioning system needs to change the degree of superheat, it is thus only necessary to change source code in control program or incited somebody to action
Temperature is arranged to an a range of variable, so that it may changes the setting value of the degree of superheat.
Certainly, it is above-mentioned to control the apparatus and method of electronic expansion valve opening with three degrees of superheat, it is completely suitable for being subcooled
The method of degree controls the aperture of electric expansion valve.Only need temperature sensor being arranged on the corresponding position of condenser, then
Utilize the difference of its gateway temperature, so that it may using the aperture of same technical scheme control electric expansion valve.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (10)
1. a kind of detect indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails, including compressor, evaporator, condensation
Device, electric expansion valve and the indoor temperature transmitter being disposed in the interior on machine, in addition to CPU and two degrees of superheat
The setting device of value, wherein, the super heat value of larger difference, for quickly freezing or heating, less super heat value, it is used for
To electric expansion valve accurate adjustment；The super heat value of larger difference, is the temperature gap of evaporator outlet and entrance, smaller difference
Super heat value, be the temperature sensor of evaporator rear portion and the temperature gap of evaporator outlet；It is characterized in that：Also include one
Individual 3rd super heat value, the 3rd degree of superheat are the temperature sensor of compressor inlet and the temperature of indoor set air outlet temperature
Difference is spent, by the 3rd super heat value compared with the default degree of superheat, judges whether air-conditioning duct loses by fiducial value
Effect, when the 3rd degree of superheat controls operation of air conditioner, by finely tuning and tuning up or turning down the aperture of electric expansion valve, find the 3rd
The degree of superheat does not change or changes excessive, illustrates that insulating barrier is destroyed.
2. indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails are detected according to claim 1, it is characterised in that：
3rd super heat value include the 3rd degree of superheat control unit, CPU, be arranged on evaporator outlet and in
2 temperature sensors that position installs, or in the entrance of condenser and 2 temperature sensors of medium position；Described
The temperature sampling cycle of temperature sensor is 0.1~10 second, and CPU passes according to 2 temperature on evaporator or condenser
The temperature gap of sensor, the degree of superheat or degree of supercooling and rate temperature change and direction are calculated, when indoor temperature transmitter is examined
When the temperature of survey is close to design temperature, CPU is adjusted in advance according to result of calculation to the open degree of electric expansion valve
Section control, it is 0~2 DEG C to control the degree of superheat or degree of supercooling；The air inlet temperature of compressor and evaporation when 3rd degree of superheat is freezes
The difference of device outlet, the 3rd degree of superheat operation of air conditioner for a period of time after, the aperture of electric expansion valve is adjusted.
3. indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails are detected according to claim 1, it is characterised in that：
The aperture of electric expansion valve is adjusted after air-conditioning, operation 10min in 3rd degree of superheat.
4. indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails are detected according to claim 1, it is characterised in that：
Temperature sensor uses temperature sensors of high precision, and measurement accuracy is 0.1 DEG C~3 DEG C.
5. indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails are detected according to claim 1, it is characterised in that：
When air-conditioning is shut down, compressor Delayed shutdown.
6. indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails are detected according to claim 1, it is characterised in that：
When carrying out aperture control to electric expansion valve, driven using stepping motor, wherein the control system bag of electric expansion valve
Include controller, sensor, transmitter, executing agency, input/output interface, drive circuit and display unit；The output of controller
By output interface, executing agency, it is added in controlled system；The controlled volume of control system, by sensor, transmitter, pass through
Input interface is sent to controller；Display unit is used for showing the degree of supercooling of operation.
7. indoor apparatus of air conditioner and the device of outdoor unit pipeline insulation layer fails are detected according to claim 1, it is characterised in that：
The CPU includes control unit, sensor unit, memory cell, execution unit, AD conversion unit, input and output
Unit, drive circuit unit and display unit；The output of controller unit is added to controlled by output interface, executing agency
In system；The controlled volume of control system, by sensor unit, AD conversion unit, control unit is sent to by input interface, should
Control unit controls the aperture of electric expansion valve；Display unit is used for showing the degree of supercooling of operation.
8. detect the method for indoor apparatus of air conditioner and outdoor unit pipeline insulation layer fails, it is characterised in that using following steps：
Step 1: tune up or turn down the aperture of electric expansion valve；
Step 2: and compared with default super heat value；
Step 3: according to real-time 3rd degree of superheat calculated compared with the default degree of superheat, CPU sends control and referred to
Make and adjustment control in advance is carried out to the open degree of electric expansion valve；
Step 4: when the 3rd degree of superheat does not change or changed excessive；The feedback control of the 3rd degree of superheat is carried out, judges room
The insulating barrier of the pipeline of interior machine and outdoor unit has damaged.
9. the method for indoor apparatus of air conditioner and outdoor unit pipeline insulation layer fails is detected according to claim 8, it is characterised in that：
Described detection method, it is the feedback control that the 3rd degree of superheat is carried out after operation of air conditioner 10min, judges indoor set and room
Whether the insulating barrier of the pipeline of outer machine has damaged.
10. the method for indoor apparatus of air conditioner and outdoor unit pipeline insulation layer fails, its feature are detected according to claim 8 or claim 9
It is：
3rd degree of superheat does not change, and refers to the change of the 3rd degree of superheat at 0 degree to 1 degree；
The change of 3rd degree of superheat is excessive, when referring to turn down, changes more than 4 degree.
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| CN201710681896.8A CN107477925B (en) | 2017-08-10 | 2017-08-10 | Device and method for detecting failure of pipeline insulating layers of indoor unit and outdoor unit of air conditioner |
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| CN201710681896.8A CN107477925B (en) | 2017-08-10 | 2017-08-10 | Device and method for detecting failure of pipeline insulating layers of indoor unit and outdoor unit of air conditioner |
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| CN102901293A (en) * | 2012-11-09 | 2013-01-30 | 四川长虹空调有限公司 | Air conditioner for precisely regulating electronic expansion valve and control method thereof |
| CN103292432A (en) * | 2013-05-20 | 2013-09-11 | 四川长虹电器股份有限公司 | Method and device for accurately regulating electronic expansion valve and temperature-accurately-regulated air conditioner |
| CN203443706U (en) * | 2013-08-27 | 2014-02-19 | 中国石油天然气股份有限公司 | Heat loss on-line monitoring device for thickened oil thermal recovery steam-injection pipeline |
| CN103761920A (en) * | 2014-02-18 | 2014-04-30 | 郑州牧业工程高等专科学校 | Refrigerating system fault simulation experiment set |
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