CN111059692A - Control method for reducing protection shutdown times of air conditioning system, computer readable storage medium and air conditioner - Google Patents
Control method for reducing protection shutdown times of air conditioning system, computer readable storage medium and air conditioner Download PDFInfo
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- CN111059692A CN111059692A CN201911258883.5A CN201911258883A CN111059692A CN 111059692 A CN111059692 A CN 111059692A CN 201911258883 A CN201911258883 A CN 201911258883A CN 111059692 A CN111059692 A CN 111059692A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001603 reducing effect Effects 0.000 title claims abstract description 22
- 230000002159 abnormal effect Effects 0.000 claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 19
- 230000009467 reduction Effects 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000000670 limiting effect Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method for reducing the number of times of protective shutdown of an air conditioning system, a computer readable storage medium and an air conditioner. When abnormal parameters are detected, the frequency reduction processing is carried out firstly, the abnormal parameters still exist after the frequency reduction processing, and the throttling device is adjusted to act before the model machine enters the protection shutdown, so that the protection shutdown frequency is effectively reduced under the condition of ensuring the safety and reliability of the model machine, the service lives of the compressor and the air conditioner are prolonged, the power consumption of the air conditioner is reduced, and the energy-saving effect is achieved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method for reducing the number of times of protection shutdown of an air conditioner system, a computer readable storage medium and an air conditioner.
Background
System protection shutdown is a common phenomenon of protection shutdown of an air conditioner. When the system parameters are monitored to be abnormal in the running process of the air conditioner, and the abnormal phenomenon can not be removed through a conventional means, the unit has to perform a shutdown protection action. The start-up and shut-down of the compressor has an effect on the service life of the compressor itself. In short, the service life of the air conditioner is closely related to the service life of the compressor, and the service life of the compressor is mainly represented by the number of times of starting and stopping. The starting and stopping times of the compressor are reduced as much as possible, and the service lives of the compressor and the air conditioner are prolonged. Meanwhile, the power consumption of the air conditioner in each startup and shutdown stage is larger than that in the normal stable operation stage, and the requirement of users and society on energy conservation is not favorable.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a control method for reducing the number of times of protective shutdown of an air conditioning system, and a control logic for controlling and eliminating abnormity is added on the basis of a conventional frequency reduction control logic, so that the number of times of entering protective shutdown can be effectively reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control method for reducing the number of times of protective shutdown of an air conditioning system is characterized in that an air conditioning unit monitors operation parameters in real time after being started and operated, enters a frequency reduction action when abnormal parameters are detected and set conditions are met, detects related operation parameters in real time after entering the frequency reduction action, adjusts the action of a throttling device according to the detected operation parameters if the abnormal parameters are continuously detected, detects the operation parameters after the action of the throttling device is adjusted, and analyzes and judges whether the air conditioning unit enters the protective shutdown. When abnormal parameters are detected, the frequency reduction processing is carried out firstly, the abnormal parameters still exist after the frequency reduction processing, and the throttling device is adjusted to act before the model machine enters the protection shutdown, so that the protection shutdown frequency is effectively reduced under the condition of ensuring the safety and reliability of the model machine, the service lives of the compressor and the air conditioner are prolonged, the power consumption of the air conditioner is reduced, and the energy-saving effect is achieved.
Further, the adjusting the throttle device according to the detected operating parameter specifically includes: and detecting the temperature of the evaporator, and increasing the opening of the electronic expansion valve when the temperature of the evaporator reaches a set temperature value. When the temperature of the evaporator reaches a set temperature value, the temperature reduction does not achieve the expected effect on the pressure adjustment of the system, the opening degree of the electronic expansion valve is increased, the pressure of the system can be effectively reduced, and the direct unit is prevented from directly entering a protection machine to be shut down.
Further, the adjusting the throttle device according to the detected operating parameter specifically includes: and detecting the exhaust temperature, and increasing the opening of the electronic expansion valve when the exhaust temperature reaches a set temperature value. When the exhaust temperature reaches a set temperature value, the exhaust temperature is not effectively reduced after frequency reduction, the unit is subjected to great pressure due to the fact that the exhaust temperature is continuously too high, and the system pressure can be effectively reduced by increasing the opening degree of the electronic expansion valve.
Further, the adjusting the throttle device according to the detected operating parameter specifically includes: the AC current is detected to obtain a current value, and when the AC current value reaches a set current value, the opening degree of the electronic expansion valve is increased. When the AC current value reaches a set current value, the current after frequency reduction is still in a high-level state, the high-level current can cause great pressure to the operation of the unit, and the pressure of the system can be effectively relieved by increasing the opening degree of the electronic expansion valve.
Further, the adjusting the throttle device according to the detected operating parameter specifically includes: and detecting the power of the air conditioning unit, and increasing the opening of the electronic expansion valve when the power of the air conditioning unit reaches a set power value. When the power of the unit reaches a set power value, the power after frequency reduction is larger, the system has large running pressure due to continuous use, the energy is wasted, the two conditions can be effectively relieved through increasing the opening of the electronic expansion valve, meanwhile, the unit is prevented from entering the protection machine to be shut down, and the number of times of the protection machine to be shut down is reduced.
Further, the adjusting the throttle device according to the detected operating parameter specifically includes: and detecting the temperature of the module, and increasing the opening of the electronic expansion valve when the temperature of the module reaches a set temperature value. When the module temperature reaches the set temperature value, it is higher to show the module temperature promptly, if the module temperature is in higher state all the time, can directly get into the protection and shut down in order to avoid the module to damage, through increase electronic expansion valve aperture this moment, can alleviate system operating pressure, and then reduce the module temperature, avoid getting into the protection and shutting down.
Further, the detecting and adjusting the operating parameters after the throttling device acts and analyzing and judging whether the protection shutdown is started or not specifically comprises: if the detected operation parameters are not abnormal after the throttle device is adjusted to act, the air conditioning unit normally works; and if the detected operation parameters are abnormal after the throttle device is adjusted to act, the air conditioning unit enters protective shutdown. By means of the abnormal parameters which can not be processed after the frequency reduction and the adjustment of the throttling device, the unit is prevented from being damaged greatly, the unit needs to enter the protection and shut down, and if the abnormal parameters disappear after the frequency reduction and the adjustment of the throttling device, the frequency of entering the protection and shut down can be effectively reduced.
Further, the adjusting the throttle device according to the detected operating parameter specifically includes: adjusting the throttle device to increase the opening of the electronic expansion valve, wherein the increasing speed of the opening of the electronic expansion valve is determined according to the difference value between the abnormal parameter and the basic parameter, and if the difference value between the abnormal parameter and the basic parameter is less than or equal to the set difference value, the opening of the electronic expansion valve is increased according to the conventional adjusting speed; and if the difference value between the abnormal parameter and the basic parameter is larger than the set difference value, increasing the set speed value on the basis of the conventional regulation speed to increase the opening of the electronic expansion valve. In order to avoid the system from violent fluctuation in a short time, the adjustment speed of the opening of the electronic expansion valve needs to be controlled. And (4) relative to the set basic parameter, if the abnormal parameter is greater than the basic parameter by a certain difference value or less, the opening degree is increased according to a conventional adjusting speed, and if the abnormal parameter is greater than the basic parameter by a certain difference value, the opening degree is increased according to a rapid adjusting speed.
A computer readable storage medium storing a computer program which, when invoked by a processor, implements the control method for reducing the number of protective shutdowns for an air conditioning system of any preceding claim.
An air conditioner comprising a processor and a memory for storing a computer program which, when invoked by the processor, implements the control method for reducing the number of protective shutdowns for an air conditioning system as set forth in any preceding claim.
The control method for reducing the number of times of protective shutdown of the air conditioning system, the computer readable storage medium and the air conditioner have the advantages that: by adding a control logic, the number of times of entering protection shutdown is effectively reduced under the condition of ensuring the safety and reliability of a sample machine, so that the service life of a compressor is prolonged, the power consumption of an air conditioner is reduced, and the energy-saving effect is achieved.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.
Example 1: a control method for reducing the number of times of protective shutdown of an air conditioning system.
As shown in fig. 1, a control method for reducing the number of times of protective shutdown of an air conditioning system includes the following steps:
for the frequency conversion air conditioner, the compressor is started, the air conditioner starts to work normally, and related detection is also used for synchronously monitoring parameters in real time. When the unit monitors abnormal parameters, the frequency limiting and reducing action is started when certain conditions are met according to logic judgment.
After the air conditioning unit enters the frequency limiting and reducing action and a certain time passes, when the monitoring abnormal parameters are maintained or reduced, the air conditioning unit keeps normal operation; when the monitored abnormal parameters are not further solved, namely the related parameters are increased, a logic judgment is carried out, and the frequency limiting and reducing types are judged as follows:
overload: detecting the temperature of a condenser/evaporator tube, determining the temperature to be overload limit frequency reduction when the temperature of the condenser/evaporator tube reaches a set value, and entering the logic control of an adjusting throttling device;
exhausting: detecting the exhaust temperature, determining the exhaust limit frequency reduction when the exhaust temperature reaches a set value, and entering the logic control of an adjusting throttling device;
AC current: detecting AC current, determining that the AC current is limited and reduced frequency when the AC current reaches a set value, and entering the logic control of an adjusting throttling device;
power: detecting power, determining power limit frequency reduction when the power reaches a set value, and entering the logic control of a regulating throttling device;
module temperature: detecting the temperature of the module, determining the temperature limit frequency of the module when the temperature of the module reaches a set value, and entering the logic control of an adjusting throttling device;
the air conditioning unit detects the parameters at the same time, and one or more of the upper limit frequency reduction types can be generated. And the logic control of the regulating throttling device can be entered only if one of the two occurs.
The control logic for adjusting the throttling device is as follows:
when the air conditioner unit enters the control logic of the adjusting throttle device, the instruction of increasing the opening of the electronic expansion valve is immediately executed, namely the electronic expansion valve is opened on the basis of the currently detected opening, and the adjustable maximum opening is set by a corresponding unit program.
In order to avoid the system from violent fluctuation in a short time, the adjustment speed of the opening of the electronic expansion valve needs to be controlled. For example, with respect to the set basic parameter, if the abnormal parameter is greater than the basic parameter by a certain difference or less, the opening degree is increased according to the conventional adjusting speed, and if the abnormal parameter is greater than the basic parameter by a certain difference, the opening degree is increased according to the rapid adjusting speed.
After entering the logic control of the adjusting throttling device, after a certain time, when monitoring abnormal parameters to maintain or reduce, the air conditioning unit keeps normal operation; and when the monitored abnormal parameters are not further solved, namely the related parameters are increased, entering logic judgment of protection shutdown, and entering protection shutdown when certain conditions are reached.
In the embodiment, the control method for reducing the system pressure by optimizing the control logic and adding the adjusting throttling device effectively reduces the number of times of entering the system for protection and shutdown under the condition of ensuring the safety and reliability of the prototype, thereby prolonging the service lives of the compressor and the air conditioner, reducing the power consumption of the air conditioner and achieving the energy-saving effect.
Example 2: a computer readable storage medium.
A computer readable storage medium storing a computer program which, when invoked by a processor, implements the control method for reducing the number of protective shutdowns for an air conditioning system of any preceding claim.
Example 3: an air conditioner.
An air conditioner comprising a processor and a memory for storing a computer program which, when invoked by the processor, implements the control method for reducing the number of protective shutdowns for an air conditioning system as set forth in any preceding claim.
The above description is only for the preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, and therefore, all equivalent or modifications that do not depart from the spirit of the present invention are intended to fall within the scope of the present invention.
Claims (10)
1. A control method for reducing the number of times of protective shutdown of an air conditioning system is characterized in that an air conditioning unit monitors operation parameters in real time after being started to operate, enters a frequency reduction action when abnormal parameters are detected and set conditions are met, detects related operation parameters in real time after entering the frequency reduction action, adjusts the action of a throttling device according to the detected operation parameters if the abnormal parameters are continuously detected, detects the operation parameters after the action of the throttling device, and analyzes and judges whether the air conditioning unit enters the protective shutdown.
2. The method as claimed in claim 1, wherein the adjusting the throttle device according to the detected operation parameter is specifically: and detecting the temperature of the evaporator, and increasing the opening of the electronic expansion valve when the temperature of the evaporator reaches a set temperature value.
3. The method as claimed in claim 1, wherein the adjusting the throttle device according to the detected operation parameter is specifically: and detecting the exhaust temperature, and increasing the opening of the electronic expansion valve when the exhaust temperature reaches a set temperature value.
4. The method as claimed in claim 1, wherein the adjusting the throttle device according to the detected operation parameter is specifically: the AC current is detected to obtain a current value, and when the AC current value reaches a set current value, the opening degree of the electronic expansion valve is increased.
5. The method as claimed in claim 1, wherein the adjusting the throttle device according to the detected operation parameter is specifically: and detecting the power of the air conditioning unit, and increasing the opening of the electronic expansion valve when the power of the air conditioning unit reaches a set power value.
6. The method as claimed in claim 1, wherein the adjusting the throttle device according to the detected operation parameter is specifically: and detecting the temperature of the module, and increasing the opening of the electronic expansion valve when the temperature of the module reaches a set temperature value.
7. The control method for reducing the number of times of the protective shutdown of the air conditioning system according to claim 1, wherein the detecting and adjusting the operating parameters after the throttling device is operated and analyzing and judging whether the protective shutdown is performed specifically comprises: if the detected operation parameters are not abnormal after the throttle device is adjusted to act, the air conditioning unit normally works; and if the detected operation parameters are abnormal after the throttle device is adjusted to act, the air conditioning unit enters protective shutdown.
8. The method as claimed in claim 1, wherein the adjusting the throttle device according to the detected operation parameter is specifically: adjusting the throttle device to increase the opening of the electronic expansion valve, wherein the increasing speed of the opening of the electronic expansion valve is determined according to the difference value between the abnormal parameter and the basic parameter, and if the difference value between the abnormal parameter and the basic parameter is less than or equal to the set difference value, the opening of the electronic expansion valve is increased according to the conventional adjusting speed; and if the difference value between the abnormal parameter and the basic parameter is larger than the set difference value, increasing the set speed value on the basis of the conventional regulation speed to increase the opening of the electronic expansion valve.
9. A computer-readable storage medium for storing a computer program, wherein the computer program, when being invoked by a processor, implements the control method for reducing the number of times of protective shutdown of an air conditioning system according to any one of claims 1 to 8.
10. An air conditioner comprising a processor and a memory for storing a computer program, wherein the computer program when invoked by the processor implements the control method for reducing the number of protected shutdowns for an air conditioning system of any of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258883.5A CN111059692A (en) | 2019-12-10 | 2019-12-10 | Control method for reducing protection shutdown times of air conditioning system, computer readable storage medium and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911258883.5A CN111059692A (en) | 2019-12-10 | 2019-12-10 | Control method for reducing protection shutdown times of air conditioning system, computer readable storage medium and air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637587A (en) * | 2020-05-28 | 2020-09-08 | 宁波奥克斯电气股份有限公司 | Control method and system for compressor overload protection and air conditioner |
| CN114234545A (en) * | 2020-09-09 | 2022-03-25 | 青岛海尔电冰箱有限公司 | Refrigerator and control method thereof |
| CN114234357A (en) * | 2021-12-24 | 2022-03-25 | 珠海格力电器股份有限公司 | Air conditioner self-adaptive operation and maintenance method, air conditioner and computer readable storage medium |
| WO2024099000A1 (en) * | 2022-11-11 | 2024-05-16 | 蔚来汽车科技(安徽)有限公司 | Method and apparatus for improving operating reliability of compressor |
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| CN107940694A (en) * | 2017-11-16 | 2018-04-20 | 珠海格力电器股份有限公司 | Exhaust protection control method and system of air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637587A (en) * | 2020-05-28 | 2020-09-08 | 宁波奥克斯电气股份有限公司 | Control method and system for compressor overload protection and air conditioner |
| CN114234545A (en) * | 2020-09-09 | 2022-03-25 | 青岛海尔电冰箱有限公司 | Refrigerator and control method thereof |
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Application publication date: 20200424 |