CN114061029A - Air conditioning system control method, equipment, storage medium and device - Google Patents
Air conditioning system control method, equipment, storage medium and device Download PDFInfo
- Publication number
- CN114061029A CN114061029A CN202010770170.3A CN202010770170A CN114061029A CN 114061029 A CN114061029 A CN 114061029A CN 202010770170 A CN202010770170 A CN 202010770170A CN 114061029 A CN114061029 A CN 114061029A
- Authority
- CN
- China
- Prior art keywords
- change rate
- temperature change
- heat exchanger
- air conditioning
- conditioning system
- 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.)
- Pending
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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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
- F24F11/62—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
- F24F11/67—Switching between heating and cooling modes
-
- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method, equipment, a storage medium and a device for controlling an air conditioning system, which relate to the technical field of air conditioning control, and the method comprises the following steps: when the air conditioning system enters a heating mode, acquiring the temperature of a coil of a heat exchanger; calculating the temperature change rate of the heat exchanger according to the temperature of the coil, and judging whether the temperature change rate meets a first preset condition; and when the temperature change rate meets the first preset condition, increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed. When the air conditioning system enters a heating mode, the temperature change rate of the temperature of the coil is detected, the frosting change point of the heat exchanger is judged by comparing the temperature change rate with the preset condition, and when the preset condition is met, the rotating speed of the fan is increased to interfere water drops on the surface of the heat exchanger, so that the frosting process on the surface of the heat exchanger is delayed.
Description
Technical Field
The invention relates to the technical field of air conditioner control, in particular to an air conditioner system control method, air conditioner system control equipment, a storage medium and an air conditioner system control device.
Background
At present, when an air conditioning system heats at a low temperature, the surface of a heat exchanger is frosted quickly, and the frost prevention effect is poor, so that the air conditioning system needs to frequently defrost the heat exchanger. When the air conditioner is operated in defrosting mode, the air conditioner system does not only stop supplying heat to the indoor space, but also absorbs heat from the indoor space, and the heat comfort environment in the indoor space is seriously influenced. Therefore, how to control the frosting speed of the surface of the heat exchanger is an urgent technical problem to be solved.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method, control equipment, a storage medium and a control device of an air conditioning system, and aims to solve the technical problems of high frosting speed and poor frost prevention effect of the surface of a heat exchanger in the prior art.
In order to achieve the above object, the present invention provides an air conditioning system control method, including the steps of:
when the air conditioning system enters a heating mode, acquiring the temperature of a coil of a heat exchanger;
calculating the temperature change rate of the heat exchanger according to the temperature of the coil, and judging whether the temperature change rate meets a first preset condition;
and when the temperature change rate meets the first preset condition, increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed.
Preferably, the step of obtaining the temperature of the coil of the heat exchanger when the air conditioning system enters the heating mode includes:
recording the running time of an air conditioning system when the air conditioning system enters a heating mode;
judging whether the running time is greater than or equal to a preset time or not;
and when the running time is greater than or equal to the preset time, acquiring the temperature of the coil of the heat exchanger.
Preferably, after the step of increasing the rotation speed of the fan corresponding to the heat exchanger to a first preset rotation speed when the temperature change rate satisfies the first preset condition, the method further includes:
judging whether the temperature change rate meets the first preset condition or not;
and when the temperature change rate meets the first preset condition, reducing the first preset rotating speed to a second preset rotating speed.
Preferably, before the step of increasing the rotation speed of the fan corresponding to the heat exchanger to a first preset rotation speed when the temperature change rate satisfies the first preset condition, the method further includes:
acquiring the current rotating speed of the fan corresponding to the heat exchanger, and taking the current rotating speed as the initial rotating speed;
correspondingly, when the temperature change rate meets the first preset condition, the step of reducing the first preset rotating speed to a second preset rotating speed comprises the following steps:
and when the temperature change rate meets the first preset condition, reducing the first preset rotating speed to the initial rotating speed.
Preferably, the step of calculating the temperature change rate of the heat exchanger according to the temperature of the coil and determining whether the temperature change rate meets the first preset condition includes:
calculating the temperature change rate of the temperature of the coil pipe in a preset time interval to obtain the temperature change rate of the heat exchanger in each preset time interval;
judging whether the current temperature change rate in the current preset time interval is greater than the historical temperature change rate in the previous preset time interval or not;
when the current temperature change rate is larger than the historical temperature change rate, judging that the temperature change rate meets the first preset condition;
and when the current temperature change rate is less than or equal to the historical temperature change rate, judging that the temperature change rate does not meet the first preset condition.
Preferably, when the temperature change rate meets the first preset condition, the step of increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed includes:
when the temperature change rate meets the first preset condition, acquiring the maximum rotating speed of a fan corresponding to the heat exchanger;
and increasing the rotating speed of the fan corresponding to the heat exchanger to the maximum rotating speed.
Preferably, after the step of increasing the rotation speed of the fan corresponding to the heat exchanger to a first preset rotation speed when the temperature change rate satisfies the first preset condition, the method further includes:
judging whether the temperature of the coil pipe is greater than a preset threshold value or not;
and when the temperature of the coil pipe is greater than the preset threshold value, controlling the air conditioning system to enter a defrosting mode.
Further, to achieve the above object, the present invention also proposes an air conditioning system control apparatus including: a memory, a processor and an air conditioning system control program stored on the memory and executable on the processor, the air conditioning system control program when executed by the processor implementing the steps of the air conditioning system control method as described above.
In addition, to achieve the above object, the present invention further provides a storage medium having an air conditioning system control program stored thereon, which when executed by a processor, implements the steps of the air conditioning system control method as described above.
In addition, in order to achieve the above object, the present invention also provides an air conditioning system control device including:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the temperature of a coil pipe of a heat exchanger when the air conditioning system enters a heating mode;
the judging module is used for calculating the temperature change rate according to the temperature of the coil and judging whether the temperature change rate meets a first preset condition or not;
and the control module is used for increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed when the temperature change rate meets the first preset condition.
According to the invention, when the air conditioning system enters a heating mode, the temperature of the coil pipe of the heat exchanger is obtained; calculating the temperature change rate of the heat exchanger according to the temperature of the coil, and judging whether the temperature change rate meets a first preset condition; and when the temperature change rate meets the first preset condition, increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed. When the air conditioning system enters a heating mode, the temperature change rate of the temperature of the coil is detected, the frosting change point of the heat exchanger is judged by comparing the temperature change rate with the preset condition, and when the preset condition is met, the rotating speed of the fan is increased to interfere water drops on the surface of the heat exchanger, so that the frosting process on the surface of the heat exchanger is delayed.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning system control device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a control method of an air conditioning system according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a control method of an air conditioning system according to a second embodiment of the present invention;
FIG. 4 is a flowchart illustrating a control method of an air conditioning system according to a third embodiment of the present invention;
fig. 5 is a block diagram showing the configuration of the first embodiment of the control apparatus for an air conditioning system according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioning system control device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioning system control apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), and the optional user interface 1003 may further include a standard wired interface and a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the air conditioning system control apparatus and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, identified as one of the computer storage media, may include therein an operating system, a network communication module, a user interface module, and an air conditioning system control program.
In the air conditioning system control device shown in fig. 1, the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the air conditioning system control apparatus calls an air conditioning system control program stored in the memory 1005 through the processor 1001 and performs the air conditioning system control method provided by the embodiment of the present invention.
Based on the hardware structure, the embodiment of the air conditioning system control method is provided.
Referring to fig. 2, fig. 2 is a flowchart illustrating a control method of an air conditioning system according to a first embodiment of the present invention.
In a first embodiment, the air conditioning system control method includes the steps of:
step S10: and when the air conditioning system enters a heating mode, acquiring the temperature of a coil of the heat exchanger.
It should be understood that the main execution body of the present embodiment is the air conditioning system control device, which has functions of data communication, program operation, device driving, and the like, and the air conditioning system control device may be integrated inside the air conditioning device.
The air conditioning system includes an input device such as a remote controller or a touch screen, and a user may input a heating command through a key preset on the input device to heat the air conditioning system. When the air conditioning system heats, heat exchange can be realized through the air source heat pump system and the heat exchanger. Because heat is required to be obtained from the outside during heating, the surface of the outdoor heat exchanger is easy to frost in a low-temperature and high-humidity environment (such as 2/1 ℃ dry-wet balls).
It should be noted that, the heat exchanger may be a super-hydrophobic heat exchanger; liquid drops can be formed on the surface of the super-hydrophobic heat exchanger, the liquid drops cannot spread on the super-hydrophobic surface to form a water film and exist in a liquid drop mode, and the liquid drops are easy to fall off under the action of self gravity. Under the low-temperature environment, the liquid drops are frozen into crystal nuclei, so that the surface of the heat exchanger is frosted. The embodiment is mainly applied to the super-hydrophobic heat exchanger. Of course, the present invention may also be applied to other types of heat exchangers, and the present embodiment is not limited thereto.
In addition, in the embodiment, a temperature sensor is installed on the heat exchanger, and when the air conditioning system enters the heating mode, the temperature of the coil of the heat exchanger is obtained through the temperature sensor. Of course, other ways may be adopted, and the embodiment is not limited thereto.
Step S20: and calculating the temperature change rate of the heat exchanger according to the temperature of the coil, and judging whether the temperature change rate meets a first preset condition.
It should be noted that during the frosting process, the frost layer is hard to fall off once formed, so that the thicker the frost layer is, the faster the temperature of the heat exchanger coil is reduced. Therefore, the present embodiment determines the frosting process of the heat exchanger by detecting the temperature change rate of the heat exchanger. The first preset condition may be that the temperature change rate becomes large. The larger the temperature change rate is, the more serious the heat exchanger frosting becomes, and when the temperature change rate becomes larger, the frosting starts to deteriorate.
During specific implementation, calculating the temperature change rate of the coil temperature in a preset time interval to obtain the temperature change rate of the heat exchanger in each preset time interval; judging whether the current temperature change rate in the current preset time interval is greater than the historical temperature change rate in the previous preset time interval or not; when the current temperature change rate is larger than the historical temperature change rate, judging that the temperature change rate meets the first preset condition; and when the current temperature change rate is less than or equal to the historical temperature change rate, judging that the temperature change rate does not meet the first preset condition.
For example, if the preset time interval is Δ T, Δ T may be 1-5 min, and the temperature change value of the heat exchanger is Δ T within the time interval Δ T, the temperature change rate is V □ T/□ T. Recording the coil temperature change rate in the current time interval as V1, and recording the coil temperature change rate in the previous time interval as V2; if V1> V2, the temperature change rate is increased, and the frosting begins to be worsened; if V1 is less than or equal to V2, the frost formation begins to deteriorate.
In order to further accurately determine the turning point of the frosting process, it is also possible to determine that the frosting starts to deteriorate when there are a plurality of V1> V2 in series. For example, when the judgment results of the temperature change rates of 2 consecutive times are all that the temperature change rate of the coil in the current time interval is greater than that in the previous time interval, it is determined that the frosting starts to deteriorate.
It should be noted that, when it is determined that the coil temperature change rate in the current time interval is greater than the coil temperature change rate in the previous time interval, a threshold value V0 may also be set. When V1-V2> V0, it is judged that the frost formation starts to deteriorate.
It should be noted that, when calculating the temperature change rate, the continuous time interval Δ t may be selected, or the time interval Δ t may be selected according to the preset interval t. Taking 10 minutes as an example, if the time interval is set to be 1 minute, 10 continuous time intervals of 1 minute can be selected; or 1 time interval of 1 minute every 1 minute, i.e. 5 time intervals of 1 minute.
Step S30: and when the temperature change rate meets the first preset condition, increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed.
It can be understood that when the temperature change rate does not meet the first preset condition, the frosting on the surface of the heat exchanger is not deteriorated, and the current state operation is maintained. When the temperature change rate meets the first preset condition, the frost formation on the surface of the heat exchanger begins to deteriorate, and the disturbance begins to be applied.
It can be understood that, in order to improve the heat exchange efficiency of the heat exchanger, the counter-rotating fan is correspondingly arranged, and the heat exchanger is blown by the counter-rotating fan, so that the heat exchange efficiency of the heat exchanger is improved. Therefore, the wind generated by the counter-rotating fan can directly pass through the surface of the heat exchanger, and the wind speed on the surface of the heat exchanger can be changed by adjusting the rotating speed of the fan.
It should be noted that, after the rotation speed of the fan is increased, the wind direction force on the water drops on the surface of the heat exchanger is increased, and the water drops overcome the wall surface adhesion force by combining the self gravity, so as to fall off from the surface of the heat exchanger. After the frosting on the surface of the heat exchanger is judged to start to deteriorate, water drops on the surface of the heat exchanger drop off by increasing the rotating speed of the fan to the preset rotating speed, so that small drops are prevented from being frozen into crystal nuclei, and the frosting process is further delayed.
It should be noted that, in order to maximize the interference effect, the first preset rotation speed may be set as the maximum rotation speed of the fan. The maximum rotating speed of the fan can be determined through the model of the fan, and generally the maximum rotating speed of the fan is about 800-950 rad/min. Of course, the first preset condition may also be other rotation speed values, which is not limited in this embodiment.
In the first embodiment, when the air conditioning system enters a heating mode, the temperature of a coil of a heat exchanger is acquired; calculating the temperature change rate of the heat exchanger according to the temperature of the coil, and judging whether the temperature change rate meets a first preset condition; and when the temperature change rate meets the first preset condition, increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed. In the embodiment, when the air conditioning system enters the heating mode, the temperature change rate of the temperature of the coil pipe is detected, the frosting change point of the heat exchanger is judged by comparing the temperature change rate with the preset condition, and when the preset condition is met, the rotating speed of the fan is increased to apply interference to water drops on the surface of the heat exchanger, so that the frosting process on the surface of the heat exchanger is delayed.
Referring to fig. 3, fig. 3 is a flowchart illustrating a control method of an air conditioning system according to a second embodiment of the present invention, which is proposed based on the first embodiment shown in fig. 2.
In the second embodiment, the step S10 includes:
step S101: and recording the running time of the air conditioning system when the air conditioning system enters a heating mode.
When the air conditioning system is just in the heating mode, droplets on the surface of the heat exchanger begin to form and grow, and the temperature change rate of the coil of the heat exchanger is high. Although the temperature change rate is large, the surface of the heat exchanger does not start to frost at the moment, and the interference effect is not ideal at the moment because the liquid drops start to form and grow at a high speed.
In this embodiment, no disturbance is applied when the air conditioning system starts heating. After the liquid drops on the surface of the heat exchanger grow to a certain degree and begin to fall off and reach a relatively stable dynamic equilibrium state, the temperature change rate of the heat exchanger begins to be detected and is ready to be interfered.
During specific implementation, when the air conditioning system enters a heating mode, a preset timer is started, and the running time of the air conditioning system is recorded. The temperature may not be detected when recording is performed.
Step S102: and judging whether the running time is greater than or equal to a preset time.
It should be noted that, generally, the time required for the water droplets on the surface of the heat exchanger to reach a relatively stable dynamic equilibrium state is about 30-60 min. Therefore, the preset time may be set to 30 minutes or 60 minutes. The specific value may be set according to the user requirement, which is not limited in this embodiment.
Step S103: and when the running time is greater than or equal to the preset time, acquiring the temperature of the coil of the heat exchanger.
It can be understood that when the running time does not reach the preset time, the water drops on the surface of the heat exchanger are still generated, and the current state is kept running at the moment for saving control resources.
It can be understood that when the operation time reaches the preset time, it indicates that the water drops on the surface of the heat exchanger reach a relatively stable dynamic equilibrium state, the surface temperature of the heat exchanger can be detected, the turning point of the frosting process of the heat exchanger beginning to deteriorate is judged, and the interference is prepared to be applied.
In the second embodiment, when the air conditioning system just enters the heating mode, liquid drops on the surface of the heat exchanger begin to form and grow, at the moment, the change rate of the temperature of the coil of the heat exchanger is high, and the speed of the liquid drops beginning to form and grow is high. By judging the running time of the air conditioning system, interference is not applied at the initial stage when the air conditioning system just enters the heating mode, so that control resources are saved.
Referring to fig. 4, fig. 4 is a flowchart illustrating a control method of an air conditioning system according to a third embodiment of the present invention, and the control method of an air conditioning system according to the third embodiment of the present invention is proposed based on the first embodiment and the second embodiment. The present embodiment is explained based on the first embodiment.
In the third embodiment, after the step S30, the method further includes:
step S40: and judging whether the temperature change rate meets the first preset condition or not.
It should be noted that after the fan speed is increased, the frosting process on the surface of the heat exchanger begins to be slow, but the frosting process cannot be completely prevented, and the frosting on the surface of the heat exchanger still deteriorates.
In this embodiment, the temperature change rate of the heat exchanger is still detected, and the turning point at which the frosting process starts to deteriorate is determined, so as to determine the effectiveness of the current interference. In this embodiment, the manner of determining whether the temperature change rate satisfies the first preset condition may refer to the description of the first embodiment, and is not repeated herein.
Step S50: and when the temperature change rate meets the first preset condition, reducing the first preset rotating speed to a second preset rotating speed.
It can be understood that when the temperature change rate does not meet the first preset condition, the frosting on the surface of the heat exchanger is not deteriorated, and the current state operation is maintained. When the temperature change rate meets a first preset condition, the frosting on the surface of the heat exchanger begins to be worsened, the applied interference begins to be invalid, and the effect cannot be achieved by continuously applying the interference.
In this embodiment, after the interference is invalid, the first preset rotation speed is reduced to remove the applied interference, so that resources can be saved.
It should be noted that the second preset rotation speed may be an initial rotation speed, and before applying interference to the heat exchanger, the current rotation speed of the fan corresponding to the heat exchanger is obtained, and the current rotation speed is used as the initial rotation speed. And when the temperature change rate meets the first preset condition, reducing the first preset rotating speed to the initial rotating speed, wherein the initial rotating speed is about 450-600 rad/min.
Step S60: and judging whether the temperature of the coil pipe is greater than a preset threshold value or not.
The water droplets on the surface of the heat exchanger freeze to form a thin frost layer, and the frost layer is difficult to fall off once formed, so that the thicker the frost layer is, the lower the temperature of the heat exchanger coil is. Defrosting operation is required in order not to affect the operation of the heat exchanger.
The preset threshold may be-3 to-5 ℃. For example, the preset threshold is set to-3 ℃, and the-3 ℃ is used as a judgment for whether the defrosting operation is needed. Of course, the preset threshold may also be other values, which is not limited in this embodiment.
Step S70: and when the temperature of the coil pipe is greater than the preset threshold value, controlling the air conditioning system to enter a defrosting mode.
It will be appreciated that when the coil temperature is less than or equal to the predetermined threshold, such as a predetermined threshold T ≦ -3 deg.C, indicating that the heat exchanger surface frost is still within the acceptable range, the current operating conditions are maintained.
It can be understood that when the temperature of the coil is greater than the preset threshold, such as the preset threshold T > -3 ℃, it indicates that the frost layer on the surface of the heat exchanger has affected the operation of the heat exchanger and needs to be defrosted, and at this time, the air conditioning system is controlled to enter the defrosting mode. The defrosting mode of the air conditioning system is a mature control mode, which is not described in detail in this embodiment.
In a third embodiment, after applying the disturbance to the heat exchanger, the rate of change of the temperature of the coil of the heat exchanger is detected to determine whether the disturbance can effectively delay the frosting process. When frost build-up is still worsening, the applied interference is removed to save resources. Meanwhile, the temperature of the heat exchange coil is monitored, and when the temperature of the coil reaches a preset value, defrosting operation is carried out on the heat exchanger.
Furthermore, an embodiment of the present invention further provides a storage medium, where an air conditioning system control program is stored, and the air conditioning system control program, when executed by a processor, implements the steps of the air conditioning system control method as described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
In addition, referring to fig. 5, an embodiment of the present invention further provides an air conditioning system control device.
In the present embodiment, the air conditioning system control device includes:
and the acquisition module 10 is used for acquiring the temperature of the coil pipe of the heat exchanger when the air conditioning system enters a heating mode.
The air conditioning system includes an input device such as a remote controller or a touch screen, and a user may input a heating command through a key preset on the input device to heat the air conditioning system. When the air conditioning system heats, heat exchange can be realized through the air source heat pump system. Because heat is required to be obtained from the outside during heating, the surface of the outdoor heat exchanger is easy to frost in a low-temperature and high-humidity environment (such as 2/1 ℃ dry-wet balls).
In addition, in the embodiment, a temperature sensor is installed on the heat exchanger, and when the air conditioning system enters the heating mode, the temperature of the coil of the heat exchanger is obtained through the temperature sensor. Of course, other ways may be adopted, and the embodiment is not limited thereto.
And the judging module 20 is configured to calculate a temperature change rate of the heat exchanger according to the temperature of the coil, and judge whether the temperature change rate meets a first preset condition.
It should be noted that during the frosting process, the frost layer is hard to fall off once formed, so that the thicker the frost layer is, the faster the temperature of the heat exchanger coil is reduced. Therefore, the present embodiment determines the frosting process of the heat exchanger by detecting the temperature change rate of the heat exchanger. The first preset condition may be that the temperature change rate becomes large. The larger the temperature change rate is, the more serious the heat exchanger frosting becomes, and when the temperature change rate becomes larger, the frosting starts to deteriorate.
During specific implementation, calculating the temperature change rate of the coil temperature in a preset time interval to obtain the temperature change rate of the heat exchanger in each preset time interval; judging whether the current temperature change rate in the current preset time interval is greater than the historical temperature change rate in the previous preset time interval or not; when the current temperature change rate is larger than the historical temperature change rate, judging that the temperature change rate meets the first preset condition; and when the current temperature change rate is less than or equal to the historical temperature change rate, judging that the temperature change rate does not meet the first preset condition.
For example, if the preset time interval is Δ T, Δ T may be 1-5 min, and the temperature change value of the heat exchanger is Δ T within the time interval Δ T, the temperature change rate is V □ T/□ T. Recording the coil temperature change rate in the current time interval as V1, and recording the coil temperature change rate in the previous time interval as V2; if V1> V2, the temperature change rate is increased, and the frosting begins to be worsened; if V1 is less than or equal to V2, the frost formation begins to deteriorate.
In order to further accurately determine the turning point of the frosting process, it is also possible to determine that the frosting starts to deteriorate when there are a plurality of V1> V2 in series. For example, when the judgment results of the temperature change rates of 2 consecutive times are all that the temperature change rate of the coil in the current time interval is greater than that in the previous time interval, it is determined that the frosting starts to deteriorate.
It should be noted that, when it is determined that the coil temperature change rate in the current time interval is greater than the coil temperature change rate in the previous time interval, a threshold value V0 may also be set. When V1-V2> V0, it is judged that the frost formation starts to deteriorate.
It should be noted that, when calculating the temperature change rate, the continuous time interval Δ t may be selected, or the time interval Δ t may be selected according to the preset interval t. Taking 10 minutes as an example, if the time interval is set to be 1 minute, 10 continuous time intervals of 1 minute can be selected; or 1 time interval of 1 minute every 1 minute, i.e. 5 time intervals of 1 minute.
And the control module 30 is configured to increase the rotation speed of the fan corresponding to the heat exchanger to a first preset rotation speed when the temperature change rate meets the first preset condition.
It can be understood that when the temperature change rate does not meet the first preset condition, the frosting on the surface of the heat exchanger is not deteriorated, and the current state operation is maintained. When the temperature change rate meets the first preset condition, the frost formation on the surface of the heat exchanger begins to deteriorate, and the disturbance begins to be applied.
It can be understood that, in order to improve the heat exchange efficiency of the heat exchanger, the counter-rotating fan is correspondingly arranged, and the heat exchanger is blown by the counter-rotating fan, so that the heat exchange efficiency of the heat exchanger is improved. Therefore, the wind generated by the counter-rotating fan can directly pass through the surface of the heat exchanger, and the wind speed on the surface of the heat exchanger can be changed by adjusting the rotating speed of the fan.
It should be noted that, after the rotation speed of the fan is increased, the wind direction force on the water drops on the surface of the heat exchanger is increased, and the water drops overcome the wall surface adhesion force by combining the self gravity, so as to fall off from the surface of the heat exchanger. After the frosting on the surface of the heat exchanger is judged to begin to deteriorate, water drops on the surface of the heat exchanger drop off by increasing the rotating speed of the fan to a preset rotating speed, and then the frosting process is delayed.
It should be noted that, in order to maximize the interference effect, the first preset rotation speed may be set as the maximum rotation speed of the fan. The maximum rotating speed of the fan can be determined through the model of the fan, and generally the maximum rotating speed of the fan is about 800-950 rad/min. Of course, the first preset condition may also be other rotation speed values, which is not limited in this embodiment.
In the embodiment, when the air conditioning system enters a heating mode, the temperature of the coil pipe of the heat exchanger is obtained; calculating the temperature change rate of the heat exchanger according to the temperature of the coil, and judging whether the temperature change rate meets a first preset condition; and when the temperature change rate meets the first preset condition, increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed. In the embodiment, when the air conditioning system enters the heating mode, the temperature change rate of the temperature of the coil pipe is detected, the frosting change point of the heat exchanger is judged by comparing the temperature change rate with the preset condition, and when the preset condition is met, the rotating speed of the fan is increased to apply interference to water drops on the surface of the heat exchanger, so that the frosting process on the surface of the heat exchanger is delayed.
Other embodiments or specific implementation manners of the air conditioning system control device according to the present invention may refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order, but rather the words first, second, third, etc. are to be interpreted as names.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a Read Only Memory (ROM)/Random Access Memory (RAM), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An air conditioning system control method, characterized by comprising the steps of:
when the air conditioning system enters a heating mode, acquiring the temperature of a coil of a heat exchanger;
calculating the temperature change rate of the heat exchanger according to the temperature of the coil, and judging whether the temperature change rate meets a first preset condition; and the number of the first and second groups,
and when the temperature change rate meets the first preset condition, increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed.
2. The air conditioning system control method of claim 1, wherein the step of obtaining the temperature of the coil of the heat exchanger when the air conditioning system enters the heating mode comprises:
recording the running time of an air conditioning system when the air conditioning system enters a heating mode;
judging whether the running time is greater than or equal to a preset time or not; and the number of the first and second groups,
and when the running time is greater than or equal to the preset time, acquiring the temperature of the coil of the heat exchanger.
3. The air conditioning system control method according to claim 1, wherein after the step of increasing the rotation speed of the fan corresponding to the heat exchanger to a first preset rotation speed when the temperature change rate satisfies the first preset condition, the method further comprises:
judging whether the temperature change rate meets the first preset condition or not; and the number of the first and second groups,
and when the temperature change rate meets the first preset condition, reducing the first preset rotating speed to a second preset rotating speed.
4. The air conditioning system control method according to claim 3, wherein before the step of increasing the rotation speed of the fan corresponding to the heat exchanger to a first preset rotation speed when the temperature change rate satisfies the first preset condition, the method further comprises:
acquiring the current rotating speed of the fan corresponding to the heat exchanger, and taking the current rotating speed as the initial rotating speed;
correspondingly, when the temperature change rate meets the first preset condition, the step of reducing the first preset rotating speed to a second preset rotating speed comprises the following steps:
and when the temperature change rate meets the first preset condition, reducing the first preset rotating speed to the initial rotating speed.
5. The air conditioning system control method according to any one of claims 1 to 4, wherein the step of calculating a temperature change rate of the heat exchanger according to the coil temperature and determining whether the temperature change rate satisfies a first preset condition includes:
calculating the temperature change rate of the temperature of the coil pipe in a preset time interval to obtain the temperature change rate of the heat exchanger in each preset time interval;
judging whether the current temperature change rate in the current preset time interval is greater than the historical temperature change rate in the previous preset time interval or not;
when the current temperature change rate is larger than the historical temperature change rate, judging that the temperature change rate meets the first preset condition; and the number of the first and second groups,
and when the current temperature change rate is less than or equal to the historical temperature change rate, judging that the temperature change rate does not meet the first preset condition.
6. The air conditioning system control method according to any one of claims 1 to 4, wherein the step of increasing the rotation speed of the fan corresponding to the heat exchanger to a first preset rotation speed when the temperature change rate satisfies the first preset condition includes:
when the temperature change rate meets the first preset condition, acquiring the maximum rotating speed of a fan corresponding to the heat exchanger; and the number of the first and second groups,
and increasing the rotating speed of the fan corresponding to the heat exchanger to the maximum rotating speed.
7. The air conditioning system control method according to any one of claims 1 to 4, wherein after the step of increasing the rotation speed of the fan corresponding to the heat exchanger to a first preset rotation speed when the temperature change rate satisfies the first preset condition, the method further comprises:
judging whether the temperature of the coil pipe is greater than a preset threshold value or not; and the number of the first and second groups,
and when the temperature of the coil pipe is greater than the preset threshold value, controlling the air conditioning system to enter a defrosting mode.
8. An air conditioning system control apparatus characterized by comprising: a memory, a processor, and an air conditioning system control program stored on the memory and executable on the processor, the air conditioning system control program when executed by the processor implementing the steps of the air conditioning system control method of any one of claims 1 to 7.
9. A storage medium having stored thereon an air conditioning system control program which, when executed by a processor, implements the steps of the air conditioning system control method according to any one of claims 1 to 7.
10. An air conditioning system control device characterized by comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the temperature of a coil pipe of a heat exchanger when the air conditioning system enters a heating mode;
the judging module is used for calculating the temperature change rate according to the temperature of the coil and judging whether the temperature change rate meets a first preset condition or not; and the number of the first and second groups,
and the control module is used for increasing the rotating speed of the fan corresponding to the heat exchanger to a first preset rotating speed when the temperature change rate meets the first preset condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770170.3A CN114061029A (en) | 2020-08-03 | 2020-08-03 | Air conditioning system control method, equipment, storage medium and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770170.3A CN114061029A (en) | 2020-08-03 | 2020-08-03 | Air conditioning system control method, equipment, storage medium and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114061029A true CN114061029A (en) | 2022-02-18 |
Family
ID=80231725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010770170.3A Pending CN114061029A (en) | 2020-08-03 | 2020-08-03 | Air conditioning system control method, equipment, storage medium and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114061029A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014013108A (en) * | 2012-07-04 | 2014-01-23 | Hitachi Appliances Inc | Air conditioner |
| CN104006449A (en) * | 2014-05-28 | 2014-08-27 | 广东美的集团芜湖制冷设备有限公司 | Air-conditioner and control method thereof |
| CN107101346A (en) * | 2017-06-19 | 2017-08-29 | 芜湖美智空调设备有限公司 | Outdoor fan control method, air conditioner and computer-readable recording medium |
| CN107906674A (en) * | 2017-11-09 | 2018-04-13 | 海信（山东）空调有限公司 | The control method of air conditioner |
| CN110243050A (en) * | 2019-06-21 | 2019-09-17 | 宁波奥克斯电气股份有限公司 | A kind of control method, device and air conditioner postponing air conditioner frosting |
| CN110940057A (en) * | 2019-12-12 | 2020-03-31 | 宁波奥克斯电气股份有限公司 | Control method for slowing down defrosting attenuation of air conditioner and air conditioner |
| CN111006359A (en) * | 2019-12-23 | 2020-04-14 | 宁波奥克斯电气股份有限公司 | Control method and system for reducing frosting speed of air conditioner and air conditioner |
-
2020
- 2020-08-03 CN CN202010770170.3A patent/CN114061029A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014013108A (en) * | 2012-07-04 | 2014-01-23 | Hitachi Appliances Inc | Air conditioner |
| CN104006449A (en) * | 2014-05-28 | 2014-08-27 | 广东美的集团芜湖制冷设备有限公司 | Air-conditioner and control method thereof |
| CN107101346A (en) * | 2017-06-19 | 2017-08-29 | 芜湖美智空调设备有限公司 | Outdoor fan control method, air conditioner and computer-readable recording medium |
| CN107906674A (en) * | 2017-11-09 | 2018-04-13 | 海信（山东）空调有限公司 | The control method of air conditioner |
| CN110243050A (en) * | 2019-06-21 | 2019-09-17 | 宁波奥克斯电气股份有限公司 | A kind of control method, device and air conditioner postponing air conditioner frosting |
| CN110940057A (en) * | 2019-12-12 | 2020-03-31 | 宁波奥克斯电气股份有限公司 | Control method for slowing down defrosting attenuation of air conditioner and air conditioner |
| CN111006359A (en) * | 2019-12-23 | 2020-04-14 | 宁波奥克斯电气股份有限公司 | Control method and system for reducing frosting speed of air conditioner and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109442690B (en) | Air conditioner control method and device, storage medium and air conditioner | |
| CN104819542B (en) | Defrosting control method, device and the air conditioner of air conditioner | |
| CN109737560B (en) | Air conditioner defrosting control method and device and air conditioner | |
| CN113587368B (en) | Cleaning method, device and equipment of air conditioner and storage medium | |
| CN111457540B (en) | Outdoor fan control method and device and air conditioner | |
| CN113028592A (en) | Heating control method, control device and air conditioner | |
| CN113357791A (en) | Control method and device for self-cleaning of air conditioner and air conditioner | |
| CN104566786A (en) | Control method and device for fan in dehumidifier and dehumidifier | |
| WO2022257523A1 (en) | Method and apparatus for controlling air conditioner, and device | |
| CN111006359A (en) | Control method and system for reducing frosting speed of air conditioner and air conditioner | |
| CN112050377A (en) | Control method and control device for defrosting of air conditioner and air conditioner | |
| CN114061029A (en) | Air conditioning system control method, equipment, storage medium and device | |
| CN111947350B (en) | Defrosting control method, defrosting control system and air source heat pump device | |
| CN110836454B (en) | Control method for inhibiting frosting of air conditioner | |
| CN109323367B (en) | Air conditioner and defrosting method and device thereof | |
| WO2023029656A1 (en) | Control method and control apparatus of air conditioning device and air conditioning device | |
| CN113154654B (en) | Air conditioner defrosting control method and device, storage medium and air conditioner | |
| CN112013502B (en) | Defrosting method of air conditioner heat exchanger and air conditioner | |
| CN110986279A (en) | Method and device for self-cleaning control of air conditioner and air conditioner | |
| CN110195919B (en) | Control method of air conditioner and air conditioner | |
| CN113513824B (en) | Air conditioner defrosting control method and device and air conditioner | |
| CN110873430A (en) | Air conditioner cleaning control method and device | |
| CN117824085A (en) | Method for controlling air conditioner, and computer-readable storage medium | |
| CN114838494B (en) | Method and device for preventing condensation of air conditioner, air conditioner and storage medium | |
| CN111947349B (en) | Defrosting control method, defrosting control system and air source heat pump device |
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 |