CN112460740A - Defrosting control method and device - Google Patents
Defrosting control method and device Download PDFInfo
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- CN112460740A CN112460740A CN202011375220.4A CN202011375220A CN112460740A CN 112460740 A CN112460740 A CN 112460740A CN 202011375220 A CN202011375220 A CN 202011375220A CN 112460740 A CN112460740 A CN 112460740A
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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
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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 provides a defrosting control method and a defrosting control device, wherein the defrosting control method comprises the following steps: and detecting the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time, and comparing the outdoor environment temperature with the first threshold temperature. And executing a defrosting control mode corresponding to the comparison result according to the comparison result of the outdoor environment temperature and the first threshold temperature. Through the detection and feedback of the detection conditions, the running condition that the air conditioner exits heating and the running condition that the air conditioner exits defrosting are judged, and related operations are executed, so that the condition that the outdoor environment temperature is very low, but when the outdoor environment humidity is also low, the heat exchanger does not frost at the moment is avoided, the defrosting is frequently started under the condition, the actual heating effect is influenced, and the optimal defrosting time is ensured under various working conditions.
Description
Technical Field
The invention relates to the technical field of air conditioner heating and defrosting, in particular to a defrosting control method and a defrosting control device.
Background
In order to improve the continuous heating effect of the air conditioner, the outdoor coil of the air conditioner needs to be effectively and timely defrosted, in the prior art, whether the installation environment temperature of the air conditioner is a low-temperature environment is judged by acquiring the outdoor environment temperature and the duration time of the outdoor environment temperature at a preset temperature threshold, and when the installation environment of the air conditioner is determined to be the low-temperature environment, the air conditioner is subjected to correction of the operation condition of quitting heating and the defrosting operation condition, so that the defrosting effect of the air conditioner in the low-temperature environment is improved.
However, this solution does not consider the situation that when the outdoor environment humidity is low, frost cannot be formed even if the outdoor environment temperature is low ", and at this time, the heat pump can continue heating operation without defrosting.
Disclosure of Invention
The embodiment of the invention provides a defrosting control method and a defrosting control device, which judge the heating quitting operation condition and the defrosting quitting operation condition of an air conditioner through detection and feedback of detection conditions, execute related operations, and avoid frequent defrosting of a heat exchanger under the condition that the outdoor environment temperature is very low but the outdoor environment humidity is also low so as not to frost the heat exchanger, thereby influencing the actual heating effect and ensuring the optimal defrosting time under various working conditions.
A first aspect provides a control method of defrosting, the control method including: and detecting the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time, and comparing the outdoor environment temperature with the first threshold temperature.
And executing a defrosting control mode corresponding to the comparison result according to the comparison result of the outdoor environment temperature and the first threshold temperature.
The controller receives a heating operation instruction, and detects the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time according to an environment temperature sensor arranged at an air inlet of the outdoor unit, a temperature sensor of the outdoor unit heat exchanger and a temperature sensor arranged at an air outlet of the indoor unit.
And setting a sampling time interval, comparing the outdoor environment temperature with the first threshold temperature in a sampling time period, and executing a defrosting control mode according to a comparison result.
According to the first aspect of the present invention, in a first possible implementation method of the defrosting control method, the executing of a defrosting control mode corresponding to a comparison result between the outdoor ambient temperature and a first threshold temperature includes: and executing a first defrosting control mode when the outdoor environment temperature is less than the first threshold temperature. And executing a second defrosting control mode when the outdoor environment temperature is greater than or equal to the first threshold temperature.
The defrosting control method ensures that whether the outdoor environment temperature is higher than the first threshold temperature or lower than the first threshold temperature, more reasonable defrosting control methods can be formulated through other temperatures such as the outdoor heat exchanger temperature and the indoor unit air outlet temperature, and meanwhile, a precondition guarantee is provided for the normal work of the heat pump.
In a second possible implementation of the control method for defrosting according to the first aspect and the first possible implementation, the control method for the first defrosting control mode includes:
setting a first sampling interval time, continuously comparing the temperature difference of the air outlet temperature of the internal machine with a second threshold temperature before and after each sampling interval time, and accumulating the first time interval in which the temperature difference of the air outlet temperature of the internal machine is greater than the second threshold temperature before and after each sampling interval time. And when the first time interval is greater than a first threshold time, outputting a defrosting control signal.
In a third possible implementation of the control method for defrosting according to the first aspect and the first possible implementation, the control method for the second defrosting control mode includes:
setting a second sampling interval time, continuously comparing the temperature difference of the outdoor heat exchanger temperature before and after each sampling interval time with a third threshold temperature, and accumulating a second time interval in which the temperature difference of the outdoor heat exchanger temperature before and after the sampling interval time is greater than the third threshold temperature.
And when the second time interval is greater than a second threshold time, outputting a defrosting control signal.
The beneficial effect that this aspect reaches does: the method considers the condition that the frost cannot be formed even if the outdoor environment temperature is low when the outdoor environment humidity is low, the heat pump can continue heating operation at the moment without defrosting, whether the outdoor environment temperature is lower than the first threshold temperature or not can be judged according to other related temperature thresholds to control whether defrosting is performed or not by comparing the outdoor environment temperature with the first threshold temperature as a boundary point of the defrosting control mode operation, on one hand, the defrosting control is reliably performed when the outdoor environment temperature is not low by combining the judgment standard of the outdoor heat exchanger temperature, and on the other hand, the defrosting control is reliably performed when the outdoor environment temperature is low by combining the outlet air temperature of the inner machine; the condition that whether the defrosting is carried out or not is judged by independently detecting the temperature of the heat exchanger of the outer machine is avoided, and the technical effect that the defrosting is frequently carried out and the user experience is influenced is avoided.
A second aspect provides a control apparatus for defrosting a heat pump, including: the detection unit is used for detecting the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time, and the comparison unit is used for comparing the outdoor environment temperature with a first threshold temperature; and the control unit is used for executing a defrosting control mode corresponding to the comparison result according to the comparison result of the outdoor environment temperature and the first threshold temperature.
According to a second aspect, in a first possible implementation method of the control device for defrosting, the control unit includes: and the first control module is used for executing a first defrosting control mode according to the condition that the outdoor environment temperature is less than the first threshold temperature. And the second control module is used for executing a second defrosting control mode when the outdoor environment temperature is greater than or equal to the first threshold temperature.
According to the second aspect and the first possible implementation method of the control device for defrosting, in the second possible implementation method of the control device for defrosting, the first control module includes:
and the first sampling comparison unit is used for setting first sampling interval time and continuously comparing the temperature difference of the air outlet temperature of the internal machine with the second threshold temperature before and after each sampling interval time.
And the first metering unit is used for accumulating a first time interval in which the temperature difference of the air outlet temperature of the internal machine is greater than the second threshold temperature before and after the sampling interval time.
And the first output unit is used for outputting a defrosting control signal when the first time interval is greater than a first threshold time.
In a third possible implementation of the control device for defrosting according to the second aspect and the first possible implementation of the control device for defrosting, the second control module includes:
a second sampling comparison unit for setting a second sampling interval time, continuously comparing the temperature difference of the air outlet temperature of the internal machine before and after each sampling interval time with a third threshold temperature,
the second metering unit is used for accumulating a second time interval in which the temperature difference of the air outlet temperature of the internal machine is greater than the third threshold temperature before and after the sampling interval time;
and the second output unit is used for outputting a defrosting control signal when the second time interval is larger than a second threshold time.
A third aspect provides an air conditioner, characterized in that the air conditioner comprises a defrosting control device, and the heat pump defrosting control device comprises the control device.
A fourth aspect provides a storage medium comprising: a readable storage medium and computer instructions stored in the readable storage medium. The computer instructions are for implementing the above-described defrost control method.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flow chart of a defrosting control method disclosed in an embodiment of the present invention;
fig. 2 is a flowchart of another defrosting control method according to an embodiment of the present invention.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The first embodiment is as follows:
the embodiment of the invention provides a control method for defrosting of a heat pump, which judges the operation condition of quitting heating and the operation condition of quitting defrosting of an air conditioner and executes related operations by detecting and feeding back the detection condition, thereby avoiding that the defrosting is frequently started under the condition that the outdoor environment temperature is very low but the outdoor environment humidity is also low and the heat exchanger does not frost, influencing the actual heating effect and ensuring the optimal defrosting time under various working conditions.
A first aspect provides a defrost control method, as shown in fig. 1. The control method comprises the following steps: s11: and detecting the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time. The controller receives a heating operation instruction, and detects the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time according to an environment temperature sensor arranged at an air inlet of the outdoor unit, a temperature sensor of the outdoor unit heat exchanger and a temperature sensor arranged at an air outlet of the indoor unit.
S12: the outdoor ambient temperature is compared to a first threshold temperature magnitude.
S13: and executing a defrosting control mode corresponding to the comparison result according to the comparison result of the outdoor environment temperature and the first threshold temperature. And setting a sampling time interval, comparing the outdoor environment temperature with the first threshold temperature in a sampling time period, and executing a defrosting control mode according to a comparison result.
According to the comparison result of the outdoor environment temperature and the first threshold temperature, a defrosting control mode corresponding to the comparison result is executed, and the defrosting control mode comprises the following steps: and executing a first defrosting control mode when the outdoor environment temperature is less than the first threshold temperature. And executing a second defrosting control mode when the outdoor environment temperature is greater than or equal to the first threshold temperature.
The control method of the first defrost control mode includes: setting a first sampling interval time, continuously comparing the temperature difference of the air outlet temperature of the internal machine with a second threshold temperature before and after each sampling interval time, and accumulating the first time interval in which the temperature difference of the air outlet temperature of the internal machine is greater than the second threshold temperature before and after each sampling interval time. And when the first time interval is greater than a first threshold time, outputting a defrosting control signal.
The control method of the second defrost control mode includes: setting a second sampling interval time, continuously comparing the temperature difference of the outdoor heat exchanger temperature before and after each sampling interval time with a third threshold temperature, and accumulating a second time interval in which the temperature difference of the outdoor heat exchanger temperature before and after the sampling interval time is greater than the third threshold temperature. And when the second time interval is greater than a second threshold time, outputting a defrosting control signal.
The defrosting control method ensures that whether the outdoor environment temperature is higher than the first threshold temperature or lower than the first threshold temperature, more reasonable defrosting control methods can be formulated through other temperatures such as the outdoor heat exchanger temperature and the indoor unit air outlet temperature, and meanwhile, a precondition guarantee is provided for the normal work of the heat pump.
The beneficial effect that this aspect reaches does: the method considers the condition that the frost cannot be formed even if the outdoor environment temperature is low when the outdoor environment humidity is low, the heat pump can continue heating operation at the moment without defrosting, whether the outdoor environment temperature is lower than the first threshold temperature or not can be judged according to other related temperature thresholds to control whether defrosting is performed or not by comparing the outdoor environment temperature with the first threshold temperature as a boundary point of the defrosting control mode operation, on one hand, the defrosting control is reliably performed when the outdoor environment temperature is not low by combining the judgment standard of the outdoor heat exchanger temperature, and on the other hand, the defrosting control is reliably performed when the outdoor environment temperature is low by combining the outlet air temperature of the inner machine; the condition that whether the defrosting is carried out or not is judged by independently detecting the temperature of the heat exchanger of the outer machine is avoided, and the technical effect that the defrosting is frequently carried out and the user experience is influenced is avoided.
A second aspect provides a control apparatus for defrosting a heat pump, including: the detection unit is used for detecting the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time, and the comparison unit is used for comparing the outdoor environment temperature with a first threshold temperature; and the control unit is used for executing a defrosting control mode corresponding to the comparison result according to the comparison result of the outdoor environment temperature and the first threshold temperature.
The control unit includes: and the first control module is used for executing a first defrosting control mode according to the condition that the outdoor environment temperature is less than the first threshold temperature. And the second control module is used for executing a second defrosting control mode when the outdoor environment temperature is greater than or equal to the first threshold temperature.
The first control module includes: and the first sampling comparison unit is used for setting first sampling interval time and continuously comparing the temperature difference of the air outlet temperature of the internal machine with the second threshold temperature before and after each sampling interval time.
And the first metering unit is used for accumulating a first time interval in which the temperature difference of the air outlet temperature of the internal machine is greater than the second threshold temperature before and after the sampling interval time.
And the first output unit is used for outputting a defrosting control signal when the first time interval is greater than a first threshold time.
The second control module includes: a second sampling comparison unit for setting a second sampling interval time, continuously comparing the temperature difference of the air outlet temperature of the internal machine before and after each sampling interval time with a third threshold temperature,
the second metering unit is used for accumulating a second time interval in which the temperature difference of the air outlet temperature of the internal machine is greater than the third threshold temperature before and after the sampling interval time;
and the second output unit is used for outputting a defrosting control signal when the second time interval is larger than a second threshold time.
A third aspect provides an air conditioner, characterized in that the air conditioner comprises a defrosting control device, and the heat pump defrosting control device comprises the control device.
A fourth aspect provides a storage medium comprising: a readable storage medium and computer instructions stored in the readable storage medium. The computer instructions are for implementing the above-described defrost control method.
Example two:
under the condition that the dry bulb temperature and the wet bulb temperature of the outdoor environment are both low, although the temperature of the heat exchanger is low, frost is not formed. If the temperature of the outer machine heat exchanger is independently detected to judge whether defrosting is to be carried out, the defrosting can be frequently carried out, and user experience is influenced.
When the air conditioner performs heating operation, the outdoor environment temperature T1, the outdoor heat exchanger temperature T2 and the indoor unit air outlet temperature T3 are detected in real time through an environment temperature sensor arranged at an outer unit air inlet, a temperature sensor of an outer unit heat exchanger and a temperature sensor arranged at an inner unit air outlet. And the temperature of the outdoor heat exchanger at the previous moment in the adjacent moments is specified to be T2', and the temperature of the outdoor heat exchanger at the next moment is specified to be T2 "; and the real-time temperature difference Delta T2 of the outdoor heat exchanger is regulated to be T2' -T2 "; the air outlet temperature of the internal machine at the previous moment is T3 ', and the air outlet temperature of the internal machine at the next moment is T3'; and the real-time indoor unit outlet air temperature difference delta T3 is regulated to be T3 '-T3'.
Executing a corresponding defrosting judgment mode by judging the magnitude of the outdoor environment temperature T1 value; when the outdoor environment temperature T1 is extremely low, executing a first judgment mode, namely judging when defrosting is started at the moment by judging the real-time indoor unit air outlet temperature difference delta T3; and otherwise, executing a second judgment mode, namely judging when the defrosting is started by judging the real-time temperature difference Delta T2 of the outdoor heat exchanger. The method steps are as follows, as shown in fig. 2.
Step 1, the air conditioner controller receives an operation instruction of executing heating defrosting.
Step 2, detecting and recording the outdoor environment temperature T1, the outdoor heat exchanger temperature T2 and the indoor unit air outlet temperature T3 in real time; and determines whether the outdoor ambient temperature T1 satisfies a preset determination condition a.
And 3, when the judgment result in the step 2 is 'satisfied', executing a first defrosting judgment mode, namely judging when defrosting is started by judging the real-time air outlet temperature difference delta T3 of the internal machine.
Step 4, when a defrosting judgment mode is executed, and the time duration of delta T3 is X to meet the judgment condition B, the frosting on the surface of the outdoor heat exchanger is considered to be serious, and in order to ensure a good heating effect, heating operation needs to be suspended for defrosting. Otherwise, the defrosting is not needed, and the heating operation is continuously kept.
And 5, when the judgment result in the step 2 is 'unsatisfied', executing a second defrosting judgment mode, namely judging when to perform defrosting by judging the real-time temperature difference Delta T2 of the outdoor heat exchanger. For example, the northwest region has dry climate, and the outdoor environment in winter has low dry bulb temperature and low wet bulb temperature. Therefore, even if the outdoor unit heat exchanger is low in temperature during long-time heating operation, the frosting condition is basically avoided. Even if not defrosting at this moment, also can guarantee fine heat transfer effect (interior machine air-out temperature is stable), can adopt mode one to defrost the judgement. If the defrosting judgment is carried out according to the mode two, the unit can be caused to enter defrosting frequently, heating can not be continuously carried out for a long time, and the comfortable experience of a human body is influenced.
And 6, when a defrosting judgment mode II is executed, when the time of continuously X of delta T2 meets the judgment condition C, the frosting on the surface of the outdoor heat exchanger is considered to be serious, and in order to ensure a good heating effect, heating operation needs to be suspended for defrosting. Otherwise, the defrosting is not needed, and the heating operation is continuously kept.
The invention is used for determining which defrosting judgment mode is executed and judging the optimal time for entering defrosting by detecting and judging the operation parameters after the air conditioner executes the heating command.
The determination of which defrosting determination mode is performed is shown in table 1.
TABLE 1
| Condition | Executing commands |
| T1 < A (A is constant) | Defrosting judgment mode one |
| T1 ≧ A (A is constant) | Defrosting judgment mode two |
As can be seen from the above table, the determination of the outdoor ambient temperature T1 determines which defrosting determination mode is adopted during the heating operation of the air conditioner. When T1 is less than A (A is a constant), executing a first defrosting judgment mode; and when the T1 is more than or equal to A (A is a constant), executing a second defrosting judgment mode.
After determining which defrosting judgment mode is adopted during the heating operation of the air conditioner, the optimal defrosting time of the air conditioner is immediately judged. The establishment of the time needs to ensure that the heating capacity of the air conditioner is in the edge of sharp attenuation before the air conditioner enters defrosting, so as to ensure that the air conditioner can prolong the continuous operation time of heating as far as possible, and large attenuation of the heating capacity is avoided, thereby ensuring good heating performance.
The decision of entering the defrosting time in the first defrosting decision mode is shown in table 2. The controller outputs a defrosting control signal, and the air conditioner performs defrosting. And entering defrosting only when the continuous X time meets the condition that the delta T3 is more than or equal to B. Otherwise, the original heating state is maintained.
TABLE 2
| Condition | Executing commands |
| When DeltaT 3 is more than or equal to B and lasts for X time | Entering defrosting |
| When Δ T3 < B | Keeping the original heating state |
As can be seen from the above table, the larger Δ T3 represents the larger difference between the air outlet temperatures at the front and rear moments, which indicates that the heating capacity of the air conditioner is seriously attenuated at this time, i.e., the outdoor unit is seriously frosted, thereby affecting the heating performance. At this time, the defrosting treatment needs to be carried out on the external machine heat exchanger so as to ensure a good heat exchange effect.
The decision of entering the defrosting time in the first defrosting decision mode is shown in table 3. The controller outputs a defrosting control signal, and the air conditioner performs defrosting. And entering defrosting only when the continuous X time meets the condition that the delta T3 is more than or equal to B. Otherwise, the original heating state is maintained.
TABLE 3
| Condition | Executing commands |
| When DeltaT 2 is more than or equal to C and lasts for X time | Entering defrosting |
| When Δ T2 < C | Keeping the original heating state |
As can be seen from the above table, the larger Δ T2 represents the larger temperature difference of the outdoor heat exchanger at the front and rear moments, which indicates that the frosting degree of the outdoor unit is more and more serious at this time, and the heating performance is affected. At this time, the defrosting treatment needs to be carried out on the external machine heat exchanger so as to ensure a good heat exchange effect.
It should be understood that the above-described embodiments are merely exemplary for illustrating the application of the present method and are not limiting, and that various other modifications and changes may be made by those skilled in the art based on the above description for studying the related problems. Therefore, the protection scope of the present invention should be defined by the appended claims.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the electronic device and the like are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A control method of defrosting, characterized in that the control method comprises:
detecting the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time, and comparing the outdoor environment temperature with a first threshold temperature;
and executing a defrosting control mode corresponding to the comparison result according to the comparison result of the outdoor environment temperature and the first threshold temperature.
2. The control method according to claim 1, wherein performing a defrost control mode corresponding to a comparison result of the outdoor ambient temperature and a first threshold temperature includes:
executing a first defrosting control mode when the outdoor environment temperature is lower than the first threshold temperature;
and executing a second defrosting control mode when the outdoor environment temperature is greater than or equal to the first threshold temperature.
3. The control method of claim 2, wherein the control method of the first defrost control mode includes:
setting a first sampling interval time, continuously comparing the temperature difference of the air outlet temperature of the internal machine before and after each sampling interval time with a second threshold temperature, and accumulating the first time interval in which the temperature difference of the air outlet temperature of the internal machine before and after the sampling interval time is greater than the second threshold temperature;
outputting a defrost control signal based on the first time interval being greater than a first threshold time.
4. The method of claim 2, wherein the method of controlling the second defrost control mode comprises:
setting a second sampling interval time, continuously comparing the temperature difference of the outdoor heat exchanger temperature before and after each sampling interval time with a third threshold temperature, and accumulating a second time interval in which the temperature difference of the outdoor heat exchanger temperature before and after the sampling interval time is greater than the third threshold temperature;
outputting a defrost control signal based on the second time interval being greater than a second threshold time.
5. A defrost control apparatus, said apparatus comprising: the detection unit is used for detecting the outdoor environment temperature, the outdoor heat exchanger temperature and the indoor unit air outlet temperature in real time, and the comparison unit is used for comparing the outdoor environment temperature with a first threshold temperature; and the control unit is used for executing a defrosting control mode corresponding to the comparison result according to the comparison result of the outdoor environment temperature and the first threshold temperature.
6. The control device according to claim 5, characterized in that the control unit includes:
the first control module is used for executing a first defrosting control mode according to the outdoor environment temperature being lower than the first threshold temperature;
and the second control module is used for executing a second defrosting control mode when the outdoor environment temperature is greater than or equal to the first threshold temperature.
7. The control apparatus of claim 6, wherein the first control module comprises:
the first sampling comparison unit is used for setting first sampling interval time, continuously comparing the temperature difference of the air outlet temperature of the internal machine before and after each sampling interval time with the second threshold temperature,
the first metering unit is used for accumulating a first time interval when the temperature difference of the air outlet temperature of the internal machine is greater than the second threshold temperature before and after the sampling interval time;
and the first output unit is used for outputting a defrosting control signal based on the fact that the first time interval is greater than a first threshold time.
8. The control apparatus of claim 6, wherein the second control module comprises:
a second sampling comparison unit for setting a second sampling interval time, continuously comparing the temperature difference of the air outlet temperature of the internal machine before and after each sampling interval time with a third threshold temperature,
the second metering unit is used for accumulating a second time interval in which the temperature difference of the air outlet temperature of the internal machine is greater than the third threshold temperature before and after the sampling interval time;
and the second output unit is used for outputting a defrosting control signal based on the second time interval being greater than a second threshold time.
9. An air conditioner characterized in that it comprises a control means for defrosting comprising the control means of claims 5 to 8.
10. A storage medium, comprising: a readable storage medium and computer instructions stored in the readable storage medium; the computer instructions are for implementing the control method for defrosting of any of claims 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011375220.4A CN112460740A (en) | 2020-11-30 | 2020-11-30 | Defrosting control method and device |
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| CN115076905A (en) * | 2022-08-10 | 2022-09-20 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device and air conditioner |
| WO2022222940A1 (en) * | 2021-04-20 | 2022-10-27 | 青岛海尔空调电子有限公司 | Air conditioning unit and defrosting control method therefor |
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