CN113074436A - Control method and device for failure of indoor temperature sensor and air conditioner - Google Patents
Control method and device for failure of indoor temperature sensor and air conditioner Download PDFInfo
- Publication number
- CN113074436A CN113074436A CN202110495997.2A CN202110495997A CN113074436A CN 113074436 A CN113074436 A CN 113074436A CN 202110495997 A CN202110495997 A CN 202110495997A CN 113074436 A CN113074436 A CN 113074436A
- Authority
- CN
- China
- Prior art keywords
- indoor temperature
- air conditioner
- indoor
- temperature sensor
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
-
- 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
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention provides a method and a device for controlling failure of an indoor temperature sensor and an air conditioner, and relates to the technical field of air conditioners. The control method comprises the following steps: and acquiring the indoor temperature detected by the indoor temperature sensor when the air conditioner is stopped when the cooling operation reaches the temperature. And judging whether the mounting position of the indoor temperature sensor of the air conditioner is invalid or not according to the indoor temperature. And if the mounting position of the indoor temperature sensor fails, acquiring the indoor recovery refrigeration temperature detected by the indoor temperature sensor at the starting moment of the compressor under the condition that the air conditioner recovers refrigeration. And setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the indoor recovery refrigeration temperature and the target set temperature set by the user. According to the control method and device for failure of the indoor temperature sensor and the air conditioner, provided by the embodiment of the invention, the refrigeration effect can be still ensured under the condition that the installation position of the indoor temperature sensor fails, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for controlling failure of an indoor temperature sensor and an air conditioner.
Background
When the air conditioner operates in a refrigerating mode, the indoor air inlet temperature can be detected in real time through the indoor temperature sensor to reflect the indoor temperature, the indoor temperature is compared with the target set temperature set by a user, if the indoor temperature is equal to the target set temperature, the indoor temperature is indicated to reach the target set temperature set by the user, and the air conditioner stops the operation of the compressor to avoid the condition that the indoor temperature is too low due to continuous refrigeration.
Once the compressor stops, the indoor temperature gradually rises back to exceed the target set temperature, and after the indoor temperature reaches a certain temperature value, the air conditioner starts the compressor to recover refrigeration. The air conditioner controls the start and stop of the compressor by detecting the indoor temperature in real time and comparing the indoor temperature with the target set temperature, so that the indoor temperature is controlled to be close to the target set temperature, and the requirement of temperature comfort of a user is met.
However, when the installation position of the indoor temperature sensor of the air conditioner is failed, the indoor temperature sensor is contacted with the surface of the indoor evaporator, which causes inaccurate detection and poor refrigeration effect.
Disclosure of Invention
The invention solves the problem that the detection is inaccurate due to the failure of the installation position of the indoor temperature sensor of the air conditioner, thereby causing poor refrigeration effect.
In order to solve the above problems, embodiments of the present invention provide a method and an apparatus for controlling failure of an indoor temperature sensor, and an air conditioner.
In a first aspect, the present invention provides a method for controlling failure of an indoor temperature sensor, which is applied to an air conditioner, and the method comprises:
acquiring the indoor temperature detected by an indoor temperature sensor under the condition that the air conditioner is stopped when the refrigeration operation reaches the temperature;
judging whether an indoor temperature sensor of the air conditioner is in failure at the installation position according to the indoor temperature, wherein the failure at the installation position of the indoor temperature sensor represents that the indoor temperature sensor is in contact with an indoor evaporator;
if the installation position of the indoor temperature sensor fails, acquiring indoor recovery refrigeration temperature detected by the indoor temperature sensor at the starting moment of a compressor under the condition that the air conditioner recovers refrigeration;
and setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the indoor recovery refrigeration temperature and the target set temperature set by the user.
According to the control method for failure of the indoor temperature sensor provided by the embodiment of the invention, under the condition that the mounting position of the indoor temperature sensor is determined to be failed, the indoor recovery refrigeration temperature detected by the indoor temperature sensor at the starting moment of the compressor under the condition that the air conditioner recovers refrigeration is obtained, and the indoor temperature is reflected through the indoor recovery refrigeration temperature to determine whether the current indoor temperature reaches the target set temperature, so that the shortest operation time of the current refrigeration operation period of the air conditioner is set, the indoor temperature approaches the target set temperature, and the refrigeration effect can still be ensured under the condition that the mounting position of the indoor temperature sensor is failed.
Further, in an optional embodiment, the step of determining whether the installation position of the indoor temperature sensor of the air conditioner is failed according to the indoor temperature includes:
calculating an indoor temperature rise rate according to the indoor temperature;
and if the indoor temperature rising rate is greater than the preset rising rate, judging that the mounting position of the indoor temperature sensor is invalid.
Further, in an optional embodiment, the step of setting the shortest operation time of the current cooling operation cycle of the air conditioner according to the indoor recovery cooling temperature and a target set temperature set by a user includes:
calculating the difference value of subtracting the target set temperature from the indoor recovery refrigeration temperature to obtain a temperature reaching difference value;
and setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the temperature difference.
Further, in an optional embodiment, the step of setting the shortest operation time of the current cooling operation cycle of the air conditioner according to the temperature difference of reaching temperature includes:
and if the temperature reaching difference is larger than a first preset difference, setting the shortest running time of the current refrigeration running period of the air conditioner to lengthen a first preset time on the basis of the running time length of the previous refrigeration running period.
Further, in an optional embodiment, the step of setting the shortest operation time of the current cooling operation cycle of the air conditioner according to the temperature difference of reaching temperature includes:
and if the temperature reaching temperature difference is smaller than or equal to a first preset temperature difference and larger than a second preset temperature difference, setting the shortest running time of the current refrigeration running period of the air conditioner to be lengthened by a second preset time on the basis of the running time of the last refrigeration running period.
Further, in an optional embodiment, the step of setting the shortest operation time of the current cooling operation cycle of the air conditioner according to the temperature difference of reaching temperature includes:
and if the temperature reaching difference is less than or equal to a second preset difference and greater than or equal to a third preset difference, setting the shortest operation time of the current refrigeration operation cycle of the air conditioner to be the same as the operation time of the previous refrigeration operation cycle.
Further, in an optional embodiment, the step of setting the shortest operation time of the current cooling operation cycle of the air conditioner according to the temperature difference of reaching temperature includes:
and if the temperature reaching difference is smaller than a third preset difference and larger than or equal to a fourth preset difference, setting the shortest running time of the current refrigeration running period of the air conditioner to shorten a third preset time on the basis of the running time of the last refrigeration running period.
Further, in an optional embodiment, the step of setting the shortest operation time of the current cooling operation cycle of the air conditioner according to the temperature difference of reaching temperature includes:
and if the temperature reaching temperature difference is smaller than a fourth preset temperature difference, setting the shortest running time of the current refrigeration running period of the air conditioner to shorten fourth preset time on the basis of the running time length of the previous refrigeration running period.
In a second aspect, the present invention provides a control device for controlling the failure of an indoor temperature sensor, which is applied to an air conditioner, the control device comprising:
the acquisition module is used for acquiring the indoor temperature detected by the indoor temperature sensor under the condition that the air conditioner stops when the refrigeration operation reaches the temperature;
the judging module is used for judging whether the mounting position of an indoor temperature sensor of the air conditioner is failed according to the indoor temperature, wherein the failure of the mounting position of the indoor temperature sensor represents that the indoor temperature sensor is in contact with an indoor evaporator;
the acquisition module is further used for acquiring the indoor recovery refrigeration temperature detected by the indoor temperature sensor at the starting moment of the compressor under the condition that the air conditioner recovers refrigeration if the mounting position of the indoor temperature sensor fails;
and the setting module is used for setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the indoor recovery refrigeration temperature and the target set temperature set by the user.
The control device for failure of the indoor temperature sensor provided by the embodiment of the invention can still ensure the refrigeration effect under the condition that the installation position of the indoor temperature sensor fails.
In a third aspect, the present invention provides an air conditioner comprising a controller configured to execute computer instructions to implement the method for controlling the failure of an indoor temperature sensor according to any one of the preceding embodiments.
The air conditioner provided by the embodiment of the invention can still ensure the refrigeration effect under the condition that the installation position of the indoor temperature sensor fails.
Drawings
Fig. 1 is a schematic flowchart of a method for controlling failure of an indoor temperature sensor according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating the sub-steps of step S200 in FIG. 1;
FIG. 3 is a flowchart illustrating the sub-steps of step S400 in FIG. 1;
FIG. 4 is a flowchart illustrating the sub-steps of step S420 in FIG. 3;
fig. 5 is a block diagram schematically illustrating a structure of a control device for controlling a failure of an indoor temperature sensor according to an embodiment of the present invention.
Description of reference numerals:
20-control means for failure of the indoor temperature sensor; 210-an obtaining module; 220-a judgment module; 230-setting module.
Detailed Description
When the air conditioner operates in a refrigerating mode, the indoor air inlet temperature can be detected in real time through the indoor temperature sensor to reflect the indoor temperature, the indoor temperature is compared with the target set temperature set by a user, if the indoor temperature is equal to the target set temperature, the indoor temperature is indicated to reach the target set temperature set by the user, and the air conditioner stops the operation of the compressor to avoid the condition that the indoor temperature is too low due to continuous refrigeration.
Once the compressor stops, the indoor temperature gradually rises back to exceed the target set temperature, and after the indoor temperature reaches a certain temperature value, the air conditioner starts the compressor to recover refrigeration. The air conditioner controls the start and stop of the compressor by detecting the indoor temperature in real time and comparing the indoor temperature with the target set temperature, so that the indoor temperature is controlled to be close to the target set temperature, and the requirement of temperature comfort of a user is met.
When the installation position of the indoor temperature sensor of the air conditioner is invalid, the indoor temperature sensor is caused to contact the surface of the indoor evaporator, the detection is inaccurate, and the refrigeration effect is poor. The present inventors have found in their research that the reasons for the above problems are: under the condition that indoor temperature sensor touches indoor evaporator surface, the temperature that indoor temperature sensor detected is the temperature on indoor evaporator surface in fact, and indoor temperature not, if still according to foretell control mode, can lead to the compressor to open, evaporator surface temperature descends rapidly, then the temperature that indoor temperature sensor detected also can descend rapidly, satisfy the condition that reaches the warm shut down rapidly, and control compressor stall, and real indoor temperature does not reach the target temperature setting that the user set for far away, thereby cause the refrigeration effect not good, customer experience is poor. In order to solve the above problems, embodiments of the present invention provide a method and an apparatus for controlling failure of an indoor temperature sensor, and an air conditioner, and provide a new control logic for ensuring a cooling effect when an installation location of the indoor temperature sensor fails.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The embodiment of the invention provides a control method for failure of an indoor temperature sensor, which is applied to an air conditioner. The control method for failure of the indoor temperature sensor is used for carrying out optimization control on the air conditioner under the condition that the mounting position of the indoor temperature sensor fails, so that the refrigeration effect is ensured.
Referring to fig. 1, the method for controlling the failure of the indoor temperature sensor may include the following steps:
and step S100, acquiring the indoor temperature detected by the indoor temperature sensor when the air conditioner is stopped when the cooling operation reaches the temperature.
In step S100 of this embodiment, after the air conditioner stops when the cooling operation reaches the temperature, the real-time detection is performed by the indoor temperature sensorAnd (6) measuring. When the indoor temperature sensor is normally installed, the temperature detected by the indoor temperature sensor can be regarded as the indoor temperature, and the indoor temperature is tAt room temperatureAnd (4) showing. Therefore, the indoor temperature detected by the indoor temperature sensor under the condition that the refrigeration operation is stopped due to temperature reaching can be obtained, so that whether sampling abnormity occurs in the detection of the indoor temperature sensor is judged through the indoor temperature, and whether the installation position of the indoor temperature sensor is invalid is further judged.
And S200, judging whether the mounting position of an indoor temperature sensor of the air conditioner is invalid or not according to the indoor temperature, wherein the invalid mounting position of the indoor temperature sensor represents that the indoor temperature sensor is in contact with an indoor evaporator.
It should be noted that, in the case where the installation position of the indoor temperature sensor fails, the indoor temperature sensor itself may operate normally, but at this time, the indoor temperature sensor is in contact with the indoor evaporator, and the detected temperature is actually the surface temperature of the indoor evaporator. If the compressor still follows the control mode of the temperature-reaching shutdown in the related technology in the refrigeration running process, the compressor is easily judged to be the temperature-reaching shutdown by mistake, and the actual indoor temperature is far from the target set temperature set by the user. Therefore, in step S200, it is determined whether the installation position of the indoor temperature sensor of the air conditioner is failed according to the indoor temperature, so that the corresponding control is performed in the subsequent control step.
Referring to fig. 2, in order to improve the accuracy of determining the failure of the installation position of the indoor temperature sensor, the step S200 in the present embodiment may include the following sub-steps S210 to S230.
In the substep S210, an indoor temperature rising rate is calculated according to the indoor temperature.
In sub-step S210, the indoor temperature rising rate indicates a rising rate of the indoor temperature over a period of time, reflecting a degree of change in the indoor temperature. The indoor temperature rise rate is calculated by dividing a difference obtained by subtracting the indoor temperature at the start time of the period from the indoor temperature at the end time of the period by the duration of the period. For example, the rate of rise of the room temperature is represented by delta, the period of timeAt the end of the time of the indoor temperature ofEnd timeIndicating that the room temperature at the start of the period of time is tStarting timeIndicating that the period of time is denoted by T, the indoor temperature rise rate δ is (T)End time-tStarting time) The indoor temperature rise rate may be in units of deg.C/min.
And a substep S220 of determining whether the indoor temperature rising rate is greater than a preset rising rate.
In the substep S220, the preset rising rate is a preset value of the rising rate, and is set accordingly according to actual needs. In this embodiment, the predetermined rising rate is selected to be 2 ℃/min.
And a substep S230, determining that the installation position of the indoor temperature sensor is failed if the indoor temperature rising rate is greater than a preset rising rate.
In the substep S230, since the actual indoor temperature rise condition is usually gradually increased again after the air conditioner is stopped in cooling operation to reach the temperature, the rising rate is slow; and the surface temperature of the indoor evaporator changes more rapidly compared to the change of the indoor temperature. Therefore, if the indoor temperature rise rate is greater than the preset rise rate, for example, the indoor temperature rise rate δ is greater than 2 ℃/min, it can be considered that the indoor temperature rises too fast, and at this time, the temperature sampling of the indoor temperature sensor is abnormal, and it can be determined that the installation position of the indoor temperature sensor is failed.
In the embodiment of the invention, whether the installation position of the indoor temperature sensor fails or not is judged by monitoring the change rate of the indoor temperature after the temperature-reaching shutdown, so that the accuracy of the installation failure judgment can be effectively improved.
Referring to fig. 1, the method for controlling the indoor temperature sensor failure may further include step S300.
And step S300, if the installation position of the indoor temperature sensor fails, acquiring the indoor recovery refrigeration temperature detected by the indoor temperature sensor at the starting moment of the compressor under the condition that the air conditioner recovers refrigeration.
In step S300 of the present embodiment, after determining that the installation position of the indoor temperature sensor is failed, the indoor temperature sensor detects the failureThe measured temperature is actually the surface temperature of the indoor evaporator. When the air conditioner recovers the refrigeration operation from the state of reaching the temperature and stopping the machine, the temperature detected by the indoor temperature sensor at the moment of starting the compressor is acquired and is called as the indoor refrigeration recovery temperature which is tIndoor recovery refrigeration. It should be noted that the compressor is turned on from shutdown to resumption of the cooling operation for a certain period of time, and the evaporator surface temperature has been raised due to the time interval, and it can be considered that the compressor is resumed to the same temperature as the indoor temperature. At this time, the acquired indoor recovery cooling temperature at the compressor on time may be regarded as the indoor temperature, i.e., tIndoor recovery refrigeration＝tAt room temperature。
It should be noted that if the installation position of the indoor temperature sensor is not failed, the installation of the indoor temperature sensor is considered to be normal, and the operation can be continued in a control mode of normal refrigeration temperature-reaching shutdown.
And step S400, setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the indoor recovery refrigeration temperature and the target set temperature set by the user.
In step S400 of this embodiment, since the indoor recovery cooling temperature may be considered as the indoor temperature when the compressor starts to recover cooling, the difference between the indoor recovery cooling temperature and the target set temperature set by the user may reflect the actual cooling requirement, and at this time, the indoor temperature may approach the target set temperature by correspondingly setting the shortest operation time of the current cooling operation cycle of the air conditioner, so that the cooling effect may still be ensured when the installation location of the indoor temperature sensor is failed.
Referring to fig. 3, in the present embodiment, step S400 may include the following sub-steps S410-S420.
And a substep S410 of calculating the difference value of the indoor recovered refrigeration temperature minus the target set temperature to obtain the temperature difference.
In sub-step S410, the target set temperature is set at tSetting upWhen the temperature difference is expressed by Δ t, the temperature difference Δ t is tIndoor recovery refrigeration-tSetting up。
And a substep S420 of setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the temperature difference reaching value.
In the sub-step S420, the temperature difference of the reached temperature can reflect a difference between the current indoor temperature and the target set temperature, and if the temperature difference of the reached temperature is larger, the shortest operation time of the set refrigeration operation period is longer, thereby ensuring the refrigeration effect of the air conditioner. Wherein the shortest running time is TTo the shortest period of temperatureAnd (4) showing.
It should be noted that the process from the compressor being turned on to the compressor being stopped at a warm temperature or the compressor control operation time reaching the set value may be regarded as a cooling operation period. Under the condition that the installation position of the indoor temperature sensor fails, the compressor is not controlled according to the temperature reaching shutdown, and the shortest operation time of the current refrigeration operation period is correspondingly set according to the difference of temperature difference of the temperature reaching on the basis of the operation time length of the previous refrigeration operation period so as to ensure the refrigeration effect.
Referring to fig. 4, in order to further improve the accuracy of the control and the cooling effect of the air conditioner, the sub-step S420 may further include the following sub-steps S421 to S425.
In the substep S421, if the temperature difference is greater than the first preset temperature difference, the shortest operation time of the current refrigeration operation cycle of the air conditioner is set to be lengthened by the first preset time on the basis of the operation duration of the previous refrigeration operation cycle.
In the sub-step S421, the first preset temperature difference and the first preset time are preset values, and are set according to actual needs. The first preset temperature difference can be regarded as a large temperature difference, and the refrigeration requirement is large compared with the last refrigeration operation period. The first preset temperature difference is indicated at t1 and may alternatively be 3 deg.C. The first predetermined time is indicated by T1 and may be selected to be 10 min. In this embodiment, if the temperature difference Δ T is greater than 3 ℃, the shortest operation time T of the current refrigeration operation cycle of the air conditioner is setTo the shortest period of temperatureAnd the operation time length is prolonged by 10min on the basis of the operation time length of the last refrigeration operation period.
And a substep S422, if the temperature difference is less than or equal to the first preset temperature difference and greater than the second preset temperature difference, setting the shortest operation time of the current refrigeration operation period of the air conditioner to lengthen a second preset time on the basis of the operation time of the last refrigeration operation period.
In the sub-step S422, the second preset temperature difference and the second preset time are preset values, and are set according to actual needs. The second predetermined temperature difference may be regarded as a larger temperature difference, and the refrigeration requirement is larger than that of the previous refrigeration operation cycle. The second predetermined temperature difference is less than the first predetermined temperature difference. The second predetermined temperature difference is indicated at t2 and may optionally be 1 deg.C. The second predetermined time is less than the first predetermined time, and is denoted by T2, and is optionally 5 min. In this embodiment, if the temperature difference satisfies: setting the shortest operation time T of the current refrigeration operation period of the air conditioner when the delta T is more than 1 ℃ and less than or equal to 3 DEG CTo the shortest period of temperatureAnd on the basis of the running time length of the last refrigeration running period, the time is prolonged by 5 min.
And a substep S423 of setting the shortest operation time of the current refrigeration operation cycle of the air conditioner to be the same as the operation time of the previous refrigeration operation cycle if the temperature difference is less than or equal to the second preset temperature difference and greater than or equal to the third preset temperature difference.
In the sub-step S423, the third preset temperature difference is a preset value and is set according to actual needs. The third preset temperature difference may be regarded as a very small difference from the target set temperature, and the cooling requirement is the same as that of the previous cooling operation period. The third predetermined temperature difference is less than the second predetermined temperature difference. The third predetermined temperature difference is indicated at t3 and may alternatively be-1 deg.C. In this embodiment, if the temperature difference satisfies: delta T is more than or equal to minus 1 ℃ and less than or equal to 1 ℃, the shortest operation time T of the current refrigeration operation period of the air conditioner is setTo the shortest period of temperatureThe operation time length is the same as that of the last refrigeration operation period.
In the sub-step S424, if the temperature difference is smaller than the third preset temperature difference and greater than or equal to the fourth preset temperature difference, the shortest operation time of the current refrigeration operation cycle of the air conditioner is set to be shortened by the third preset time on the basis of the operation duration of the previous refrigeration operation cycle.
In the sub-step S424, the fourth preset temperature difference and the third preset time are both preset values, and are set correspondingly according to actual needs. Wherein the fourth presetThe temperature difference may be considered a smaller temperature difference where the refrigeration requirement is smaller than in the previous refrigeration cycle. The fourth preset temperature difference is smaller than the third preset temperature difference and is a negative value. The fourth preset temperature difference is indicated at t4 and may alternatively be-3 deg.C. The third predetermined time is indicated by T3, and may be selected to be 5 min. In this embodiment, if the temperature difference satisfies: delta T is more than or equal to minus 3 ℃ and less than minus 1 ℃, and the shortest operation time T of the current refrigeration operation period of the air conditioner is setTo the shortest period of temperatureShortening 5min on the basis of the running time of the last refrigeration running period.
And a substep S425, if the temperature difference is less than a fourth preset temperature difference, setting the shortest operation time of the current refrigeration operation period of the air conditioner to shorten a fourth preset time on the basis of the operation time of the previous refrigeration operation period.
In the sub-step S425, the fourth preset time is a preset value and is set according to actual needs. The fourth preset time is indicated by T4 and may be selected to be 10 min. If the temperature difference is less than the fourth preset temperature difference, the refrigeration requirement is considered to be small compared with the last refrigeration operation cycle. In this embodiment, if the temperature difference satisfies: delta T is less than-3 deg.C, the shortest operation time T of current refrigeration operation period of air conditioner is setTo the shortest period of temperatureShortening 10min on the basis of the running time of the last refrigeration running period.
It should be noted that the fourth preset temperature difference and the third preset temperature difference are both negative values, and alternatively, the sub-steps S424 and S425 may be applied to the case where the indoor temperature itself is already low. In addition, in order to ensure the refrigeration effect and save energy consumption, the shortest operation time T of the refrigeration operation period is selected optionallyTo the shortest period of temperatureThe longest time is 60min, and the shortest time is 7 min.
Referring to fig. 5, in order to execute possible steps of the control method for failure of the indoor temperature sensor provided in the above embodiments, an embodiment of the invention provides a control device 20 for failure of an indoor temperature sensor, which is applied to an air conditioner and is used for executing the control method for failure of an indoor temperature sensor. It should be noted that the basic principle and the generated technical effect of the control device 20 for failure of an indoor temperature sensor according to the embodiment of the present invention are substantially the same as those of the above embodiment, and for the sake of brief description, reference may be made to the corresponding contents in the above embodiment for parts that are not mentioned in this embodiment.
The control apparatus 20 for deactivating an indoor temperature sensor may include an acquisition module 210, a determination module 220, and a setting module 230.
The obtaining module 210 is configured to obtain an indoor temperature detected by an indoor temperature sensor when the air conditioner is stopped when the cooling operation reaches a temperature.
Optionally, the obtaining module 210 may be specifically configured to execute step S100 in the control method, so as to achieve a corresponding technical effect.
The judging module 220 is configured to judge whether an installation position of an indoor temperature sensor of the air conditioner is failed according to the indoor temperature, where the failure of the installation position of the indoor temperature sensor indicates that the indoor temperature sensor contacts the indoor evaporator.
Optionally, the determining module 220 may be specifically configured to execute the step S200 and each sub-step thereof in the control method, so as to achieve the corresponding technical effect.
The obtaining module 210 is further configured to obtain an indoor recovery cooling temperature detected by the indoor temperature sensor at the time when the compressor is turned on when the air conditioner recovers cooling if the installation position of the indoor temperature sensor fails.
Optionally, the obtaining module 210 may be specifically configured to execute step S300 in the control method, so as to achieve a corresponding technical effect.
The setting module 230 is configured to set a minimum operation time of a current cooling operation period of the air conditioner according to the indoor recovery cooling temperature and a target set temperature set by a user.
Optionally, the setting module 230 may be specifically configured to execute the step S400 and each sub-step thereof in the above control method, so as to achieve the corresponding technical effect.
In addition, an embodiment of the present invention further provides an air conditioner, which includes a controller, where the controller is configured to execute a computer instruction to implement the method for controlling the indoor temperature sensor to fail, provided in any of the above embodiments.
The controller may be an integrated circuit chip having signal processing capabilities. The controller may be a general-purpose processor, and may include a Central Processing Unit (CPU), a single chip Microcomputer (MCU), a Micro Controller Unit (MCU), a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an embedded ARM, and other chips, where the controller may implement or execute the methods, steps, and Logic blocks disclosed in the embodiments of the present invention.
In one possible implementation, the air conditioner may further include a memory for storing program instructions executable by the controller, for example, the control device 20 for failure of the indoor temperature sensor provided by the embodiment of the present application may include at least one of software and firmware stored in the memory. The Memory may be a stand-alone external Memory including, but not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Read-Only Memory (EPROM), electrically Erasable Read-Only Memory (EEPROM). The memory may also be integrated with the controller, for example, the memory may be integrated with the controller on the same chip.
In summary, according to the control method and device for failure of the indoor temperature sensor and the air conditioner provided by the embodiments of the present invention, when it is determined that the installation location of the indoor temperature sensor is failed, the indoor recovery cooling temperature detected by the indoor temperature sensor at the time when the compressor is turned on when the air conditioner recovers cooling is obtained, and the indoor temperature is reflected by the indoor recovery cooling temperature to determine whether the current indoor temperature reaches the target set temperature, so as to set the shortest operation time of the current cooling operation cycle of the air conditioner, so that the indoor temperature approaches the target set temperature, and thus the cooling effect can still be ensured when the installation location of the indoor temperature sensor is failed.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A control method for failure of an indoor temperature sensor is applied to an air conditioner and is characterized by comprising the following steps:
acquiring the indoor temperature detected by an indoor temperature sensor under the condition that the air conditioner is stopped when the refrigeration operation reaches the temperature;
judging whether an indoor temperature sensor of the air conditioner is in failure at the installation position according to the indoor temperature, wherein the failure at the installation position of the indoor temperature sensor represents that the indoor temperature sensor is in contact with an indoor evaporator;
if the installation position of the indoor temperature sensor fails, acquiring indoor recovery refrigeration temperature detected by the indoor temperature sensor at the starting moment of a compressor under the condition that the air conditioner recovers refrigeration;
and setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the indoor recovery refrigeration temperature and the target set temperature set by the user.
2. The method for controlling failure of an indoor temperature sensor according to claim 1, wherein the step of determining whether the installation position of the indoor temperature sensor of the air conditioner has failed according to the indoor temperature includes:
calculating an indoor temperature rise rate according to the indoor temperature;
and if the indoor temperature rising rate is greater than the preset rising rate, judging that the mounting position of the indoor temperature sensor is invalid.
3. The method for controlling the failure of the indoor temperature sensor according to claim 1 or 2, wherein the step of setting the shortest operation time of the current cooling operation period of the air conditioner according to the indoor recovery cooling temperature and the target set temperature set by the user comprises:
calculating the difference value of subtracting the target set temperature from the indoor recovery refrigeration temperature to obtain a temperature reaching difference value;
and setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the temperature difference.
4. The method for controlling a failure of an indoor temperature sensor according to claim 3, wherein the step of setting the shortest operation time of the current cooling operation period of the air conditioner according to the temperature difference of arrival comprises:
and if the temperature reaching difference is larger than a first preset difference, setting the shortest running time of the current refrigeration running period of the air conditioner to lengthen a first preset time on the basis of the running time length of the previous refrigeration running period.
5. The method for controlling a failure of an indoor temperature sensor according to claim 3, wherein the step of setting the shortest operation time of the current cooling operation period of the air conditioner according to the temperature difference of arrival comprises:
and if the temperature reaching temperature difference is smaller than or equal to a first preset temperature difference and larger than a second preset temperature difference, setting the shortest running time of the current refrigeration running period of the air conditioner to be lengthened by a second preset time on the basis of the running time of the last refrigeration running period.
6. The method for controlling a failure of an indoor temperature sensor according to claim 3, wherein the step of setting the shortest operation time of the current cooling operation period of the air conditioner according to the temperature difference of arrival comprises:
and if the temperature reaching difference is less than or equal to a second preset difference and greater than or equal to a third preset difference, setting the shortest operation time of the current refrigeration operation cycle of the air conditioner to be the same as the operation time of the previous refrigeration operation cycle.
7. The method for controlling a failure of an indoor temperature sensor according to claim 3, wherein the step of setting the shortest operation time of the current cooling operation period of the air conditioner according to the temperature difference of arrival comprises:
and if the temperature reaching difference is smaller than a third preset difference and larger than or equal to a fourth preset difference, setting the shortest running time of the current refrigeration running period of the air conditioner to shorten a third preset time on the basis of the running time of the last refrigeration running period.
8. The method for controlling a failure of an indoor temperature sensor according to claim 3, wherein the step of setting the shortest operation time of the current cooling operation period of the air conditioner according to the temperature difference of arrival comprises:
and if the temperature reaching temperature difference is smaller than a fourth preset temperature difference, setting the shortest running time of the current refrigeration running period of the air conditioner to shorten fourth preset time on the basis of the running time length of the previous refrigeration running period.
9. The utility model provides a controlling means of indoor temperature sensor inefficacy, is applied to the air conditioner which characterized in that, controlling means includes:
the acquisition module is used for acquiring the indoor temperature detected by the indoor temperature sensor under the condition that the air conditioner stops when the refrigeration operation reaches the temperature;
the judging module is used for judging whether the mounting position of an indoor temperature sensor of the air conditioner is failed according to the indoor temperature, wherein the failure of the mounting position of the indoor temperature sensor represents that the indoor temperature sensor is in contact with an indoor evaporator;
the acquisition module is further used for acquiring the indoor recovery refrigeration temperature detected by the indoor temperature sensor at the starting moment of the compressor under the condition that the air conditioner recovers refrigeration if the mounting position of the indoor temperature sensor fails;
and the setting module is used for setting the shortest operation time of the current refrigeration operation period of the air conditioner according to the indoor recovery refrigeration temperature and the target set temperature set by the user.
10. An air conditioner comprising a controller for executing computer instructions to implement the method for controlling the failure of an indoor temperature sensor according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110495997.2A CN113074436B (en) | 2021-05-07 | 2021-05-07 | Control method and device for failure of indoor temperature sensor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110495997.2A CN113074436B (en) | 2021-05-07 | 2021-05-07 | Control method and device for failure of indoor temperature sensor and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113074436A true CN113074436A (en) | 2021-07-06 |
| CN113074436B CN113074436B (en) | 2022-03-29 |
Family
ID=76616289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110495997.2A Active CN113074436B (en) | 2021-05-07 | 2021-05-07 | Control method and device for failure of indoor temperature sensor and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113074436B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930388A (en) * | 2022-12-14 | 2023-04-07 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, air conditioner and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8824879D0 (en) * | 1987-10-23 | 1988-11-30 | Toshiba Kk | Refrigerant heating type air conditioner |
| JP2003114071A (en) * | 2001-10-05 | 2003-04-18 | Saginomiya Seisakusho Inc | Controller of air conditioner |
| CN102345915A (en) * | 2011-08-02 | 2012-02-08 | 宁波奥克斯电气有限公司 | Fault operation control method of DC (direct current) convertible frequency air conditioner |
| CN107255352A (en) * | 2017-07-28 | 2017-10-17 | 广东美的暖通设备有限公司 | Air conditioner and its Temperature Failure or the detection method and device of radiator loose contact |
| CN109340992A (en) * | 2018-10-16 | 2019-02-15 | 宁波奥克斯电气股份有限公司 | A kind of operation method, system and air conditioner controlling air-conditioning reliability |
-
2021
- 2021-05-07 CN CN202110495997.2A patent/CN113074436B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8824879D0 (en) * | 1987-10-23 | 1988-11-30 | Toshiba Kk | Refrigerant heating type air conditioner |
| JP2003114071A (en) * | 2001-10-05 | 2003-04-18 | Saginomiya Seisakusho Inc | Controller of air conditioner |
| CN102345915A (en) * | 2011-08-02 | 2012-02-08 | 宁波奥克斯电气有限公司 | Fault operation control method of DC (direct current) convertible frequency air conditioner |
| CN107255352A (en) * | 2017-07-28 | 2017-10-17 | 广东美的暖通设备有限公司 | Air conditioner and its Temperature Failure or the detection method and device of radiator loose contact |
| CN109340992A (en) * | 2018-10-16 | 2019-02-15 | 宁波奥克斯电气股份有限公司 | A kind of operation method, system and air conditioner controlling air-conditioning reliability |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930388A (en) * | 2022-12-14 | 2023-04-07 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, air conditioner and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113074436B (en) | 2022-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6548285B2 (en) | Control method of air conditioner and air conditioner | |
| CN110332716B (en) | Defrosting control method and device for heat pump water heater and heat pump water heater | |
| CN112963936B (en) | Refrigeration frequency control method and device and air conditioner | |
| JP6061819B2 (en) | Air conditioner | |
| CN104764148A (en) | Control method and control device of outdoor fan and air conditioner | |
| US20150112503A1 (en) | Control device for automatically starting warm-up | |
| CN113074436B (en) | Control method and device for failure of indoor temperature sensor and air conditioner | |
| CN109556646B (en) | Gas sensor calibration method and device, storage medium and terminal | |
| US20170102000A1 (en) | Motor drive device capable of informing malfunction in operation of fan, and method thereof | |
| CN108885022B (en) | Air conditioner outlet air temperature estimation device and computer readable recording medium | |
| CN114183883A (en) | Detection method of four-way valve and air conditioner | |
| CN110542234B (en) | Air conditioner, operation control method and device thereof and computer readable storage medium | |
| CN112944576A (en) | Frequency control method and device for air conditioner compressor and air conditioner | |
| JP4840108B2 (en) | Compressor protection control method for air conditioner | |
| CN112910353B (en) | Motor control method, device and system based on sensor deviation self-correction | |
| CN105864953A (en) | Air conditioner throttling part blockage detection method and device and air conditioner | |
| CN111023418B (en) | Pressure sensor abnormity control method and device and air conditioner | |
| WO2023093479A1 (en) | Air conditioner and control method for air conditioner | |
| CN108981076B (en) | Unit control method and system and air conditioner | |
| CN113375273B (en) | Compressor frequency control method and device and air conditioner | |
| WO2022180878A1 (en) | Prediction method, program, prediction system, server, and display device | |
| CN110940032B (en) | Power module temperature detection control method and device, storage medium and air conditioner | |
| EP3447405A1 (en) | Air-conditioning device | |
| CN115507572B (en) | Error detection method and device for electronic expansion valve, air conditioner and storage medium | |
| CN205245337U (en) | Underfloor heating system lack of water protection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |