CN112923511A - Anti-condensation control method and device for radiator and air conditioner - Google Patents
Anti-condensation control method and device for radiator and air conditioner Download PDFInfo
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- CN112923511A CN112923511A CN202110158285.1A CN202110158285A CN112923511A CN 112923511 A CN112923511 A CN 112923511A CN 202110158285 A CN202110158285 A CN 202110158285A CN 112923511 A CN112923511 A CN 112923511A
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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
- F24F11/41—Defrosting; Preventing freezing
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
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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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/70—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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses a radiator anti-condensation control method, a radiator anti-condensation control device and an air conditioner, wherein the radiator anti-condensation control method comprises the following steps: monitoring the temperature of a radiator of a target air conditioner and the ambient temperature; when a starting-up instruction input by a user is received, judging whether condensation exists on a radiator of the target air conditioner or not based on the temperature of the radiator and the ambient temperature; and if not, controlling the target air conditioner to start, and performing anti-condensation control on the target air conditioner based on the temperature of the radiator and the ambient temperature. The invention can perform condensation prevention control on the target air conditioner based on the temperature of the radiator and the ambient temperature, avoid condensation generated in the operation process of the target air conditioner and improve the operation stability of the target air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for controlling anti-condensation of a radiator and an air conditioner.
Background
Along with the application of air conditioner more and more extensively, the service environment of air conditioner is also more and more abominable, for example the condition such as ultra-low temperature heats, because the refrigerant radiating effect is better than the effect that traditional forced air cooling dispels the heat and reduces power device temperature, in order to promote the heat transfer effect of air conditioner, present air conditioner adopts the refrigerant radiator to reduce the temperature of power device usually, but, when the refrigerant radiator produces the condensation, brings the potential safety hazard for power device easily, leads to the power device to damage. Therefore, the existing air conditioner has the problems that the power device of the air conditioner is easy to damage and the operation stability is low because the radiator is easy to generate condensation.
Disclosure of Invention
In order to solve the problems, the invention provides a radiator anti-condensation control method and device and an air conditioner, which can perform anti-condensation control on a target air conditioner based on the temperature of a radiator and the ambient temperature, avoid condensation generated in the operation process of the target air conditioner and improve the operation stability of the target air conditioner.
According to an embodiment of the present invention, in one aspect, a method for controlling condensation prevention of a heat sink is provided, including: monitoring the temperature of a radiator of a target air conditioner and the ambient temperature; when a starting-up instruction input by a user is received, judging whether condensation exists on the radiator of the target air conditioner or not based on the temperature of the radiator and the ambient temperature; and if not, controlling the target air conditioner to start, and performing anti-condensation control on the target air conditioner based on the temperature of the radiator and the ambient temperature.
By adopting the technical scheme, whether the target air conditioner meets the starting condition can be judged, and the target air conditioner is controlled to be started when no condensation exists on the radiator, so that the target air conditioner can avoid damaging power devices when being started, and the safety of the target air conditioner is improved; after the target air conditioner is started, the target air conditioner is further subjected to condensation prevention control, condensation generated in the operation process of the target air conditioner can be avoided, and the operation stability of the target air conditioner is improved.
Preferably, the step of determining whether condensation exists on the radiator of the target air conditioner based on the radiator temperature and the ambient temperature includes: acquiring the temperature of a radiator and the ambient temperature of the target air conditioner in a target time period, and calculating a target temperature difference value between the temperature of the radiator and the ambient temperature in the target time period; the target time interval is located in the time interval before the starting instruction is received; when the target temperature difference value is greater than a preset temperature threshold value within a first time period, determining that condensation does not exist on a radiator of the target air conditioner; and when the target temperature difference value is smaller than the preset temperature threshold value in a second time period and the environment temperature is greater than a preset minimum temperature, determining that condensation exists on the radiator of the target air conditioner.
By adopting the technical scheme, the size of the target temperature difference value in the target time period before the target air conditioner receives the starting instruction is judged, whether condensation is generated on the radiator when the target air conditioner receives the starting instruction can be accurately judged, and guarantee is provided for power devices in the target air conditioner.
Preferably, the step of performing condensation prevention control on the target air conditioner based on the radiator temperature and the ambient temperature includes: when the running time of a compressor of the target air conditioner reaches a first preset time, acquiring the current ambient temperature and the radiator temperature to obtain a first ambient temperature and a first radiator temperature; and controlling the carrier frequency of a controller connected with the radiator based on a first temperature difference value between the first radiator temperature and the first environment temperature.
By adopting the technical scheme, whether the radiator of the target air conditioner has the risk of generating condensation is predicted based on the first temperature difference, and the carrier frequency of the controller connected with the radiator is controlled, so that the carrier frequency of the controller can be controlled when the radiator has the risk of generating condensation, the temperature of the radiator is controlled, and the condensation hidden danger of the radiator is eliminated in advance.
Preferably, the step of controlling a carrier frequency of a controller connected to a heat sink based on a first temperature difference between the first heat sink temperature and the first ambient temperature includes: step a, determining a target carrier frequency of the controller based on the first temperature difference value; wherein the target carrier frequency increases as the first temperature difference decreases; b, controlling the controller to operate for a second preset time at the target carrier frequency, and then obtaining the current environment temperature and the radiator temperature to obtain a second environment temperature and a second radiator temperature; and c, controlling the running state of the target air conditioner based on a second temperature difference value between the temperature of the second radiator and the temperature of the second environment and the first temperature difference value.
By adopting the technical scheme, whether the risk of generating condensation of the radiator is reduced or not can be checked, the operation state of the target air conditioner is further controlled by acquiring the second temperature difference value after the carrier frequency operation for the second preset time is promoted, according to the relation between the second temperature difference value and the first temperature difference value, the radiator can be ensured not to generate condensation, and the operation safety of the target air conditioner is promoted.
Preferably, the step of determining the target carrier frequency of the controller based on the first temperature difference value includes: acquiring the current carrier frequency of the controller; when the first temperature difference value is greater than or equal to a second temperature threshold value and smaller than a first temperature threshold value, increasing a first frequency value to the current carrier frequency to obtain the target carrier frequency; when the first temperature difference value is greater than or equal to a third temperature threshold and smaller than the second temperature threshold, increasing a second frequency value to the current carrier frequency to obtain the target carrier frequency; wherein the second frequency value is greater than the first frequency value; when the first temperature difference value is smaller than the third temperature threshold value, increasing a third frequency value to the current carrier frequency to obtain the target carrier frequency; wherein the third frequency value is greater than the second frequency value.
By adopting the technical scheme, when the difference value between the temperature of the radiator of the target air conditioner and the ambient temperature is small, the carrier frequency of the controller is increased, the power consumption of the radiator can be increased, and the temperature of a power device in the radiator is increased, so that the temperature of the radiator is increased, the difference value between the temperature of the radiator and the ambient temperature is reduced, the risk of condensation generated by the radiator is reduced, and the running stability of the target air conditioner is improved.
Preferably, the step of controlling the operation state of the target air conditioner based on a second temperature difference between the second radiator temperature and the second ambient temperature and the first temperature difference includes: when the second temperature difference is larger than the first temperature difference, controlling the controller to maintain operation at the target carrier frequency; and when the second temperature difference value is smaller than the first temperature difference value and the target carrier frequency is smaller than a preset maximum frequency, taking the second temperature difference value as a new first temperature difference value, and returning to execute the step a.
By adopting the technical scheme, the controller is controlled to maintain the target carrier frequency to operate, or the carrier frequency of the controller is increased again, so that the temperature of the radiator can be increased, and the risk of condensation of the radiator is reduced.
Preferably, the method for controlling condensation prevention of a heat sink further includes: and when the second temperature difference value is smaller than the first temperature difference value and the target carrier frequency is greater than or equal to the preset maximum frequency, judging whether the second temperature difference value is smaller than a fourth temperature threshold value within a third preset time, and if so, controlling the target air conditioner to enter a shutdown protection state.
By adopting the technical scheme, the power device of the air conditioner can be protected from being damaged, and the reliability of the target air conditioner is improved.
Preferably, the method for controlling condensation prevention of a heat sink further includes: and if the condensation exists on the radiator of the target air conditioner, controlling the target air conditioner to enter a shutdown protection state, and sending a condensation protection prompt to a user.
By adopting the technical scheme, the target air conditioner is controlled to be in the shutdown protection state, the hidden danger brought to a power device by condensation can be eliminated, and the condensation protection prompt is sent to a user, so that the condensation phenomenon of a refrigerant radiator of the target air conditioner of the user can be prompted.
According to an embodiment of the present invention, in another aspect, there is provided a condensation prevention control apparatus for a heat sink, including: the monitoring module is used for monitoring the temperature of a radiator of a target air conditioner and the ambient temperature; the judging module is used for judging whether the target air conditioner meets a preset starting condition or not based on the temperature of the radiator and the ambient temperature when a starting instruction input by a user is received; and the control module is used for controlling the target air conditioner to be started when the target air conditioner meets the preset starting condition and carrying out anti-condensation control on the target air conditioner based on the temperature of the radiator and the ambient temperature.
According to an embodiment of the present invention, in another aspect, there is provided an air conditioner including a computer readable storage medium storing a computer program and a processor, the computer program being read by the processor and when executed, implementing the method according to any one of the first aspect.
According to an embodiment of the present invention, in another aspect, a computer-readable storage medium is provided, which stores a computer program, which when read and executed by a processor, implements the method according to any one of the first aspect.
The invention has the following beneficial effects: when the target air conditioner receives a starting-up instruction, whether condensation exists on the radiator of the target air conditioner is judged according to the temperature of the radiator of the target air conditioner and the ambient temperature, so that whether the target air conditioner meets the starting-up condition can be judged; after the target air conditioner is started, the target air conditioner is further subjected to anti-condensation control based on the temperature of the radiator and the ambient temperature, condensation generated by the target air conditioner in the operation process can be avoided, and the operation stability of the target air conditioner is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a flow chart of a method for controlling anti-condensation of a heat sink according to the present invention;
FIG. 2 is a schematic view of a temperature monitoring system according to the present invention;
fig. 3 is a schematic structural diagram of a condensation prevention control device for a heat sink according to the present invention.
Description of reference numerals:
21-a first temperature sensor; 22-a second temperature sensor; 23-heat sink.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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 first embodiment is as follows:
the present embodiment provides a method for controlling anti-condensation of a radiator, which may be applied to a target air conditioner, and referring to a flowchart of the method for controlling anti-condensation of a radiator shown in fig. 1, the method mainly includes the following steps S102 to S106:
step S102, the temperature of the radiator of the target air conditioner and the ambient temperature are monitored.
The target air conditioner can be any air conditioner which needs anti-condensation control, and comprises a controller and a radiator, wherein the controller is in communication connection with the radiator. Before the target air conditioner is started, the temperature of a radiator in the target air conditioner is detected in real time or at preset time intervals based on a first temperature sensor, and the ambient temperature of the environment where the radiator is located is detected in real time or at preset time intervals based on a second temperature sensor or an IPM (Intelligent Power Module) Module.
And step S104, judging whether condensation exists on the radiator of the target air conditioner based on the temperature of the radiator and the ambient temperature when a starting-up instruction input by a user is received.
When the temperature of the radiator is low and the temperature of the environment where the radiator is located is high, the radiator is prone to generating condensation, therefore, when the target air conditioner receives a starting-up instruction input by a user through a remote controller or a control panel, the temperature and the environment temperature data of the radiator monitored by the temperature sensor are obtained, and whether condensation possibly exists on the radiator of the target air conditioner is judged based on the temperature and the environment temperature data of the radiator of the target air conditioner.
And S106, if not, controlling the target air conditioner to start, and performing anti-condensation control on the target air conditioner based on the temperature of the radiator and the ambient temperature.
When condensation does not exist on a radiator of the target air conditioner, the target air conditioner is controlled to be started, the radiator enters a working state after the target air conditioner starts to work, the temperature of the radiator can be changed, in order to prevent condensation from being generated on the radiator, the temperature and the ambient temperature of the radiator after the target air conditioner is started are obtained, condensation prevention control is carried out on the target air conditioner based on the temperature and the ambient temperature of the radiator, condensation is prevented from being generated on the target air conditioner, and the working stability of a power device is improved.
According to the anti-condensation control method for the radiator, when the target air conditioner receives the starting instruction, whether condensation exists on the radiator of the target air conditioner is judged according to the temperature of the radiator of the target air conditioner and the ambient temperature, so that whether the target air conditioner meets the starting condition can be judged, and the target air conditioner is controlled to be started when no condensation exists on the radiator, so that the target air conditioner can be prevented from damaging power devices when being started, and the safety of the target air conditioner is improved; after the target air conditioner is started, the target air conditioner is further subjected to anti-condensation control based on the temperature of the radiator and the ambient temperature, condensation generated by the target air conditioner in the operation process can be avoided, and the operation stability of the target air conditioner is improved.
In order to accurately determine whether condensation exists on the radiator of the target air conditioner, the present embodiment provides an implementation manner for determining whether condensation exists on the radiator of the target air conditioner based on the temperature of the radiator and the ambient temperature, and the following steps (1) to (3) may be specifically referred to:
step (1): and acquiring the temperature of a radiator and the ambient temperature of the target air conditioner in a target time period, and calculating the target temperature difference between the temperature of the radiator and the ambient temperature in the target time period.
And the target time interval is positioned in the time interval before the starting instruction is received, the temperature of the radiator and the ambient temperature of the target air conditioner in the target time interval before the starting instruction is received are obtained, the difference value between the temperature of the radiator and the ambient temperature at each moment in the target time interval is calculated and recorded as the target temperature difference value, and the target temperature difference value at each moment in the target time interval is obtained. The target time interval can be from the moment when the target air conditioner receives the starting instruction, and the target air conditioner reversely traces back for 15-30 min, namely, the first 15-30 min when the starting instruction is received is taken as the target time interval.
Step (2): and when the target temperature difference value is greater than the preset temperature threshold value in the first time period, determining that condensation does not exist on the radiator of the target air conditioner.
When the temperature of the radiator is higher than the ambient temperature, the radiator does not generate condensation, and the preset temperature threshold value can be a temperature value which ensures that the temperature of the radiator is far higher than the ambient temperature and does not generate condensation risk, such as an arbitrary value between 3 and 5 degrees.
When the duration that the target temperature difference value in the target time period is greater than the preset temperature threshold can be greater than the first time period, that is, the temperature difference value between the temperature of the radiator and the ambient temperature is continuously greater than the preset temperature threshold for a long time, it can be determined that the radiator does not have the risk of generating condensation. The first time period may be any value between 5min and 10 min.
And (3): and when the target temperature difference value is smaller than the preset temperature threshold value in the second time period and the ambient temperature is greater than the preset minimum temperature, determining that condensation exists on the radiator of the target air conditioner.
The preset minimum temperature may be 0 degrees, that is, the temperature value of the ambient temperature is a positive value, and when the ambient temperature is the positive value and the target temperature difference between the radiator temperature and the ambient temperature in the target time period is smaller than the preset temperature difference, it indicates that the radiator temperature is far smaller than the ambient temperature before the target air conditioner receives the start-up instruction. The second time period may be any time period between 10min and 15min, and may further include a sum of times (such as 3 to 4 times) when the target temperature difference is detected to be smaller than the preset temperature threshold, where the time period of each detection may be any time period between 3min and 5 min.
When the temperature of the radiator is low and the ambient temperature is high, condensation is easily generated in the low-temperature radiator in a high-temperature environment, and when the duration that the target temperature difference value in the target time interval is smaller than the preset temperature threshold value can be longer than a second duration, namely the duration that the temperature of the radiator is far smaller than the ambient temperature in the target time interval exceeds the second duration, it is determined that condensation may exist on the radiator of the target air conditioner or the risk of generating condensation is high. By judging the size of the target temperature difference value in the target time period before the target air conditioner receives the starting-up instruction, whether condensation is generated on the radiator when the target air conditioner receives the starting-up instruction can be accurately judged, and guarantee is provided for a power device in the target air conditioner.
In order to prevent the target air conditioner from generating condensation during the operation process, the embodiment provides an implementation manner of performing condensation prevention control on the target air conditioner based on the temperature of the radiator and the ambient temperature, and the following steps 1 to 2 may be specifically referred to for execution:
step 1: when the running time of the compressor of the target air conditioner reaches a first preset time, the current environment temperature and the radiator temperature are obtained, and a first environment temperature and a first radiator temperature are obtained.
When the target air conditioner is started to operate, the operation time of the compressor is continuously monitored, and when the operation time of the compressor of the target air conditioner is longer than a first preset time, the current environment temperature and the current radiator temperature are obtained and recorded as a first environment temperature and a first radiator temperature respectively. The first preset time may be determined according to an operating frequency of the compressor or a temperature difference between a temperature of the radiator and an ambient temperature at the time of starting the compressor, such as an arbitrary value between 5min and 15 min.
Step 2: the carrier frequency of a controller to which the heat sink is connected is controlled based on a first temperature difference between a first heat sink temperature and a first ambient temperature.
And calculating a difference value between the first radiator temperature and the first environment temperature, recording the difference value as a first temperature difference value, predicting whether the radiator of the target air conditioner has the risk of generating condensation or not based on the first temperature difference value, and controlling the carrier frequency of a controller connected with the radiator when the radiator has the risk of generating condensation, so that the control of the radiator temperature is realized, and the condensation hidden danger of the radiator is eliminated in advance.
In order to improve the stability of the operation of the target air conditioner, this embodiment provides an implementation manner of controlling the carrier frequency of the controller connected to the heat sink based on the first temperature difference between the first ambient temperature and the first heat sink temperature, and the following steps a to c may be specifically referred to:
and step a, determining a target carrier frequency of the controller based on the first temperature difference value.
Wherein the target carrier frequency increases as the first temperature difference decreases. And after the compressor of the target air conditioner operates for a first preset time, setting a controlled carrier frequency based on the range of a first temperature difference value between the detected first radiator temperature and the first environment temperature, and recording the controlled carrier frequency as the target carrier frequency.
In one specific embodiment, the current carrier frequency of the controller of the target air conditioner is obtained. And when the first temperature difference value is greater than or equal to the second temperature threshold value and smaller than the first temperature threshold value, increasing the current carrier frequency by a first frequency value to obtain the target carrier frequency. When the first temperature difference Δ T1 satisfies T2 ≦ Δ T1< T1, the carrier frequency of the control controller is increased by the first frequency value F1_ rise based on the current carrier frequency F0, resulting in the target carrier frequency Frun being F0+ F1_ rise.
When the first temperature difference value is greater than or equal to the third temperature threshold value and smaller than the second temperature threshold value, increasing the current carrier frequency by a second frequency value to obtain a target carrier frequency; wherein the second frequency value is greater than the first frequency value. When the second temperature difference Δ T2 satisfies that T3 ≦ Δ T2< T2, the carrier frequency of the control controller is increased by the second frequency value F2_ rise based on the current carrier frequency F0, so as to obtain the target carrier frequency Frun — F0+ F2_ rise.
When the first temperature difference is smaller than a third temperature threshold value, increasing a third frequency value to the current carrier frequency to obtain a target carrier frequency; wherein the third frequency value is greater than the second frequency value. When the third temperature difference Δ T3 satisfies Δ T3< T3, the carrier frequency of the control controller is increased by a third frequency value F3_ rise based on the current carrier frequency F0, so as to obtain a target carrier frequency Frun — F0+ F3_ rise.
The value ranges of the first temperature threshold T1, the second temperature threshold T2 and the third temperature threshold T3 are [ -3, 3] degrees, and T3< T2< T1 is satisfied; the first frequency value F1_ rise, the second frequency value F2_ rise and the third frequency value F3_ rise may all be in a range of 0 to 1kHz, and satisfy F1_ rise < F2_ rise < F3_ rise, that is, when the temperature difference between the radiator temperature and the ambient temperature gradually decreases, the increase of the carrier frequency is gradually increased, so as to increase the rising speed of the radiator temperature.
Through when the difference between the temperature of the radiator of the target air conditioner and the ambient temperature is small, the carrier frequency of the controller is increased, the power consumption of the radiator can be increased, and the temperature of a power device in the radiator is increased, so that the temperature of the radiator is increased, the difference between the temperature of the radiator and the ambient temperature is reduced, the risk of condensation generated by the radiator is reduced, and the running stability of the target air conditioner is improved.
And b, after the controller is controlled to operate for a second preset time at the target carrier frequency, acquiring the current environment temperature and the radiator temperature to obtain a second environment temperature and a second radiator temperature.
And controlling the controller to operate at the target carrier frequency, increasing the signal transmission frequency of the controller, further increasing the power consumption of the radiator, and gradually increasing the temperature of the radiator. The second preset time may be any value between 1-5 min.
And c, controlling the running state of the target air conditioner based on a second temperature difference value and a first temperature difference value between the temperature of the second radiator and the temperature of the second environment.
And calculating the difference between the temperature of the second radiator and the second ambient temperature, and recording the difference as a second temperature difference. After the carrier frequency of the controller is controlled based on the first temperature difference, in order to check whether the risk of generating condensation of the radiator is reduced, the operating state of the target air conditioner is further controlled by obtaining a second temperature difference after the carrier frequency is increased and the carrier frequency is operated for a second preset time, and according to the relation between the second temperature difference and the first temperature difference, condensation of the radiator can be prevented, and the operating safety of the target air conditioner is improved.
In one embodiment, the controller is controlled to maintain operation at the target carrier frequency when the second temperature difference is greater than the first temperature difference. That is, if the temperature difference between the radiator temperature and the ambient temperature increases after the carrier frequency of the controller is increased based on the above steps a to b (for example, the first temperature difference satisfies T2 ≦ Δ T1< T1 and the second temperature difference Δ T2> T1 after the carrier frequency of the controller is increased in the above step a, or the first temperature difference satisfies T3 ≦ Δ T1< T2 and the second temperature difference Δ T2> T2 after the carrier frequency of the controller is increased in the above step a), it is indicated that the temperature of the radiator can be increased when the controller is operated at the above target carrier frequency, thereby reducing the risk of the radiator generating condensation, and the controller is controlled to maintain the above target carrier frequency operation, thereby eliminating the risk of the radiator generating condensation.
And (c) when the second temperature difference is smaller than the first temperature difference and the target carrier frequency is smaller than the preset maximum frequency, taking the second temperature difference as a new first temperature difference, and returning to execute the step (a). Namely, after the carrier frequency of the controller is raised based on the steps a to b, if the temperature difference between the temperature of the radiator and the ambient temperature is still decreased, which indicates that the temperature of the radiator does not rise, the risk of generating condensation on the radiator is increased, and in order to reduce the risk of generating condensation on the radiator, when the target carrier frequency of the controller is less than a preset maximum frequency (the preset maximum frequency can be determined according to the model of the controller, such as an arbitrary value between 5 and 8 kHz), the second temperature difference is used as a new first temperature difference, and the steps a to c are re-executed, so that the carrier frequency of the controller is raised again, the temperature of the radiator is raised, and the risk of generating condensation on the radiator is reduced.
And when the second temperature difference value is smaller than the first temperature difference value and the target carrier frequency is larger than or equal to the preset maximum frequency, judging whether the second temperature difference value is smaller than a fourth temperature threshold value within a third preset time, and if so, controlling the target air conditioner to enter a shutdown protection state. After the carrier frequency of the controller is increased based on the steps a to b, if the current carrier frequency of the controller reaches the preset maximum frequency and the temperature difference between the temperature of the radiator and the ambient temperature is still decreasing, whether the second temperature difference is continuously smaller than a fourth temperature threshold (the fourth temperature threshold is smaller than the third temperature threshold) within a third preset time is judged, if yes, the risk of condensation on the radiator is increased, and as the carrier frequency of the controller reaches the maximum limit, the temperature of the radiator cannot be increased by increasing the carrier frequency of the controller, and the target air conditioner is controlled to perform shutdown protection, so that power devices of the air conditioner are protected from being damaged, and the reliability of the target air conditioner is improved. The target air conditioner can also display a protection code during shutdown protection, and the protection code can be represented by preset characters so as to improve the high risk of condensation generated by a radiator of the target air conditioner of a user.
In order to further improve the safety of the target air conditioner, the method for controlling the anti-condensation of the heat sink provided by the embodiment further includes: and if the condensation exists on the radiator of the target air conditioner, controlling the target air conditioner to enter a shutdown protection state, and sending a condensation protection prompt to a user. When the condensation phenomenon exists on the radiator of the target air conditioner, the target air conditioner is controlled to be in a shutdown protection state, hidden dangers brought to a power device by condensation can be eliminated, and the condensation protection prompt is sent to a user to prompt the user that the condensation phenomenon exists on the refrigerant radiator of the target air conditioner. The condensation protection prompt may include an audio prompt and/or a text prompt. The user is prompted that the target air conditioner enters the shutdown protection state, such as by displaying a character prompt of "protection" or "condensation protection".
According to the anti-condensation control method for the radiator, the risk of condensation of the radiator is predicted based on the temperature difference between the detected temperature of the radiator and the ambient temperature, when the temperature difference between the temperature of the radiator and the ambient temperature is small, the carrier frequency of the controller is increased, the temperature of the power device is increased, the temperature of the radiator is increased, the risk of condensation of the radiator is reduced, potential safety hazards brought to the power device by condensation are eliminated, and the safety of a target air conditioner is improved.
Example two:
corresponding to the method for controlling condensation prevention of the heat sink provided in the first embodiment, an embodiment of the present invention provides an example of performing condensation prevention control on a refrigerant heat sink by using the method, and the method may be specifically executed by referring to the following steps 1) to 3):
step 1): when the air conditioner is not started, the temperature of the radiator and the ambient temperature are monitored, and when a starting instruction is received, whether the air conditioner meets a starting condition or not is judged.
Referring to the schematic diagram of temperature monitoring shown in fig. 2, the first temperature sensor 21 detects the ambient temperature of the environment where the radiator is located, and the second temperature sensor 22 detects the temperature of the radiator 23.
When the radiator temperature is monitored for 3-4 times continuously (such as 3-4 times), the ambient temperature is greater than the ambient temperature and the preset minimum temperature, and the duration time of each time reaches X0min (such as 5min), it is determined that condensation possibly exists in the radiator of the air conditioner and the starting condition is not met, the air conditioner is controlled to perform shutdown protection, and a protection code is displayed.
Step 2): and if the starting condition is met, when the continuous running time of the compressor of the air conditioner is detected to be greater than the first preset time M1min, determining the carrier frequency of the controller according to the current temperature of the radiator and the ambient temperature.
After the air conditioner is started and runs for M1min, detecting the current temperature and the ambient temperature of the radiator, and predicting whether the radiator has the risk of generating condensation according to the difference value of the current temperature and the ambient temperature of the radiator:
(1) when the radiator temperature-ambient temperature < the first temperature threshold T1, the carrier frequency of the controller is increased by F1_ rise based on the current operating frequency, and the carrier frequency Frun after the controller is increased is less than or equal to Frun _ Max (preset maximum frequency).
(2) When the radiator temperature-ambient temperature < the second temperature threshold T2, the carrier frequency of the control is increased by F2_ rise based on the current operating frequency, and the carrier frequency Frun after the controller has been increased is less than or equal to Frun _ Max.
(3) When the radiator temperature-ambient temperature < the third temperature threshold T3, the carrier frequency of the control is increased by F3_ rise based on the current operating frequency, and the carrier frequency Frun after the controller has been increased is less than or equal to Frun _ Max.
Wherein, T3< T2< T1, F1_ rise < F2_ rise < F3_ rise. The smaller the difference between the temperature of the radiator and the ambient temperature is, the higher the risk of the radiator generating condensation is, and the power consumption of the radiator can be improved by improving the carrier frequency, so that the temperature of the radiator is increased, and the risk of the radiator generating condensation is reduced.
Step 3): when the air conditioner is detected to operate for M2min (1 min-3 min), the current temperature of the radiator and the ambient temperature are detected again, and the air conditioner is controlled according to the temperature difference between the temperature of the radiator and the ambient temperature.
(1) And if the temperature difference between the temperature of the radiator and the ambient temperature is still reduced and the carrier frequency of the controller is less than the preset maximum frequency Frun _ Max, returning to execute the step 2), and increasing the carrier frequency of the controller according to the temperature difference.
(2) And if the carrier frequency Frun of the controller after the frequency is increased is larger than or equal to run _ Max and the temperature difference between the temperature of the radiator and the ambient temperature is still reduced, controlling the air conditioner to perform shutdown protection when the temperature of the radiator is smaller than the ambient temperature plus a fourth temperature threshold Ttop and lasts for a third preset time. Wherein, the fourth temperature threshold Tstop is smaller than the third temperature threshold T3.
(3) If the temperature difference between the temperature of the radiator and the ambient temperature does not decrease any more; such as when the radiator temperature-ambient temperature < T1 before the controller carrier frequency is raised, and > T1 after the controller carrier frequency is raised; or when the radiator temperature-ambient temperature is less than T2 before the controller carrier frequency is raised and is greater than T2 after the controller carrier frequency is raised; alternatively, the controller maintains current carrier frequency operation when the radiator temperature-ambient temperature < T3 before the controller carrier frequency is raised and > T3 after the controller carrier frequency is raised.
Example three:
corresponding to the first method for controlling anti-condensation of a heat sink provided in the foregoing embodiment, an embodiment of the present invention provides a device for controlling anti-condensation of a heat sink, which can be applied to a target air conditioner, and as shown in fig. 3, the device includes the following modules:
and the monitoring module 31 is used for monitoring the temperature of the radiator of the target air conditioner and the ambient temperature.
The determining module 32 is configured to determine whether the target air conditioner meets a preset startup condition based on the temperature of the radiator and the ambient temperature when receiving a startup instruction input by a user.
And the control module 33 is configured to control the target air conditioner to start up when the target air conditioner meets a preset starting condition, and perform anti-condensation control on the target air conditioner based on the temperature of the radiator and the ambient temperature.
According to the anti-condensation control device for the radiator, when the target air conditioner receives the starting instruction, whether condensation exists on the radiator of the target air conditioner is judged according to the temperature of the radiator of the target air conditioner and the ambient temperature, so that whether the target air conditioner meets the starting condition can be judged, and the target air conditioner is controlled to be started when no condensation exists on the radiator, so that the target air conditioner can be prevented from damaging power devices when being started, and the safety of the target air conditioner is improved; after the target air conditioner is started, the target air conditioner is further subjected to anti-condensation control based on the temperature of the radiator and the ambient temperature, condensation generated by the target air conditioner in the operation process can be avoided, and the operation stability of the target air conditioner is improved.
In an embodiment, the determining module 32 is further configured to obtain a radiator temperature and an ambient temperature of the target air conditioner in a target time period, and calculate a target temperature difference between the radiator temperature and the ambient temperature in the target time period; wherein, the target time interval is positioned in the time interval before the starting instruction is received; when the target temperature difference value is greater than a preset temperature threshold value within a first time period, determining that condensation does not exist on a radiator of the target air conditioner; and when the target temperature difference value is smaller than the preset temperature threshold value in the second time period and the ambient temperature is greater than the preset minimum temperature, determining that condensation exists on the radiator of the target air conditioner.
In an embodiment, the control module 33 is further configured to obtain a current ambient temperature and a current radiator temperature when the operation time of the compressor of the target air conditioner reaches a first preset time, so as to obtain a first ambient temperature and a first radiator temperature; the carrier frequency of a controller to which the heat sink is connected is controlled based on a first temperature difference between a first heat sink temperature and a first ambient temperature.
In an embodiment, the control module 33 is further configured to perform the following steps: step a, determining a target carrier frequency of a controller based on a first temperature difference value; wherein the target carrier frequency increases with decreasing first temperature difference; b, after the controller is controlled to operate for a second preset time at the target carrier frequency, acquiring the current environment temperature and the radiator temperature to obtain a second environment temperature and a second radiator temperature; and c, controlling the running state of the target air conditioner based on a second temperature difference value and a first temperature difference value between the temperature of the second radiator and the temperature of the second environment.
In an embodiment, the control module 33 is further configured to obtain a current carrier frequency of the controller; when the first temperature difference value is greater than or equal to the second temperature threshold value and smaller than the first temperature threshold value, increasing the current carrier frequency by a first frequency value to obtain a target carrier frequency; when the first temperature difference value is greater than or equal to the third temperature threshold value and smaller than the second temperature threshold value, increasing the current carrier frequency by a second frequency value to obtain a target carrier frequency; wherein the second frequency value is greater than the first frequency value; when the first temperature difference is smaller than a third temperature threshold value, increasing a third frequency value to the current carrier frequency to obtain a target carrier frequency; wherein the third frequency value is greater than the second frequency value.
In one embodiment, the control module 33 is further configured to control the controller to maintain the operation at the target carrier frequency when the second temperature difference is greater than the first temperature difference; and when the second temperature difference value is smaller than the first temperature difference value and the target carrier frequency is smaller than the preset maximum frequency, taking the second temperature difference value as a new first temperature difference value, and returning to execute the step a.
In one embodiment, the above apparatus further comprises:
and the first shutdown control module is used for judging whether the second temperature difference value is smaller than a fourth temperature threshold value within a third preset time or not when the second temperature difference value is smaller than the first temperature difference value and the target carrier frequency is greater than or equal to a preset maximum frequency, and if so, controlling the target air conditioner to enter a shutdown protection state.
And the second shutdown control module is used for controlling the target air conditioner to enter a shutdown protection state when condensation exists on the radiator of the target air conditioner and sending a condensation protection prompt to a user.
The above-mentioned condensation controlling means is prevented to radiator that this embodiment provided, through the risk size that produces the condensation based on the temperature difference prediction radiator between detection radiator temperature and the ambient temperature, can be when the temperature difference between radiator temperature and the ambient temperature is less, through the carrier frequency that promotes the controller, make the temperature of power device rise, thereby promote the radiator temperature, reduce the risk that the radiator produced the condensation, eliminate the potential safety hazard that the condensation brought for the power device, the security of target air conditioner has been promoted.
Example four:
corresponding to the method for controlling anti-condensation of the heat sink provided by the first embodiment, the present embodiment provides an air conditioner, which includes a computer readable storage medium storing a computer program and a processor, wherein when the computer program is read and executed by the processor, the method for controlling anti-condensation of the heat sink provided by the first embodiment is implemented.
Example five:
the present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the above-mentioned method for controlling anti-condensation of a heat sink, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
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.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The radiator anti-condensation control device and the air conditioner disclosed by the embodiment correspond to the radiator anti-condensation control method disclosed by the embodiment, so that the description is relatively simple, and relevant parts can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
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 (11)
1. A method for controlling condensation prevention of a radiator is characterized by comprising the following steps:
monitoring the temperature of a radiator of a target air conditioner and the ambient temperature;
when a starting-up instruction input by a user is received, judging whether condensation exists on the radiator of the target air conditioner or not based on the temperature of the radiator and the ambient temperature;
and if not, controlling the target air conditioner to start, and performing anti-condensation control on the target air conditioner based on the temperature of the radiator and the ambient temperature.
2. The method for controlling anti-condensation on a radiator of claim 1, wherein the step of determining whether condensation exists on the radiator of the target air conditioner based on the radiator temperature and the ambient temperature comprises:
acquiring the temperature of a radiator and the ambient temperature of the target air conditioner in a target time period, and calculating a target temperature difference value between the temperature of the radiator and the ambient temperature in the target time period; the target time interval is located in the time interval before the starting instruction is received;
when the target temperature difference value is greater than a preset temperature threshold value within a first time period, determining that condensation does not exist on a radiator of the target air conditioner;
and when the target temperature difference value is smaller than the preset temperature threshold value in a second time period and the environment temperature is greater than a preset minimum temperature, determining that condensation exists on the radiator of the target air conditioner.
3. The radiator anti-condensation control method according to claim 1, wherein the step of performing anti-condensation control on the target air conditioner based on the radiator temperature and the ambient temperature includes:
when the running time of a compressor of the target air conditioner reaches a first preset time, acquiring the current ambient temperature and the radiator temperature to obtain a first ambient temperature and a first radiator temperature;
and controlling the carrier frequency of a controller connected with the radiator based on a first temperature difference value between the first radiator temperature and the first environment temperature.
4. The method of claim 3, wherein the step of controlling a carrier frequency of a controller coupled to the heat sink based on a first temperature difference between the first heat sink temperature and the first ambient temperature comprises:
step a, determining a target carrier frequency of the controller based on the first temperature difference value; wherein the target carrier frequency increases as the first temperature difference decreases;
b, controlling the controller to operate for a second preset time at the target carrier frequency, and then obtaining the current environment temperature and the radiator temperature to obtain a second environment temperature and a second radiator temperature;
and c, controlling the running state of the target air conditioner based on a second temperature difference value between the temperature of the second radiator and the temperature of the second environment and the first temperature difference value.
5. The heat sink anti-condensation control method of claim 4, wherein the step of determining a target carrier frequency of the controller based on the first temperature difference value comprises:
acquiring the current carrier frequency of the controller;
when the first temperature difference value is greater than or equal to a second temperature threshold value and smaller than a first temperature threshold value, increasing a first frequency value to the current carrier frequency to obtain the target carrier frequency;
when the first temperature difference value is greater than or equal to a third temperature threshold and smaller than the second temperature threshold, increasing a second frequency value to the current carrier frequency to obtain the target carrier frequency; wherein the second frequency value is greater than the first frequency value;
when the first temperature difference value is smaller than the third temperature threshold value, increasing a third frequency value to the current carrier frequency to obtain the target carrier frequency; wherein the third frequency value is greater than the second frequency value.
6. The method of claim 4, wherein the step of controlling the operation state of the target air conditioner based on a second temperature difference between the second radiator temperature and the second ambient temperature and the first temperature difference comprises:
when the second temperature difference is larger than the first temperature difference, controlling the controller to maintain operation at the target carrier frequency;
and when the second temperature difference value is smaller than the first temperature difference value and the target carrier frequency is smaller than a preset maximum frequency, taking the second temperature difference value as a new first temperature difference value, and returning to execute the step a.
7. The heat sink anti-condensation control method of claim 6, further comprising:
and when the second temperature difference value is smaller than the first temperature difference value and the target carrier frequency is greater than or equal to the preset maximum frequency, judging whether the second temperature difference value is smaller than a fourth temperature threshold value within a third preset time, and if so, controlling the target air conditioner to enter a shutdown protection state.
8. The heat sink anti-condensation control method of any one of claims 1-7, further comprising:
and if the condensation exists on the radiator of the target air conditioner, controlling the target air conditioner to enter a shutdown protection state, and sending a condensation protection prompt to a user.
9. The utility model provides a condensation controlling means is prevented to radiator which characterized in that includes:
the monitoring module is used for monitoring the temperature of a radiator of a target air conditioner and the ambient temperature;
the judging module is used for judging whether the target air conditioner meets a preset starting condition or not based on the temperature of the radiator and the ambient temperature when a starting instruction input by a user is received;
and the control module is used for controlling the target air conditioner to be started when the target air conditioner meets the preset starting condition and carrying out anti-condensation control on the target air conditioner based on the temperature of the radiator and the ambient temperature.
10. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the method according to any one of claims 1 to 8.
11. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method according to any one of claims 1-8.
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| US20180367059A1 (en) * | 2016-02-10 | 2018-12-20 | Mitsubishi Electric Corporation | Power conversion device and air-conditioning apparatus |
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