CN109323369A - Air-conditioning and its defrosting method and device - Google Patents
Air-conditioning and its defrosting method and device Download PDFInfo
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- CN109323369A CN109323369A CN201811163187.1A CN201811163187A CN109323369A CN 109323369 A CN109323369 A CN 109323369A CN 201811163187 A CN201811163187 A CN 201811163187A CN 109323369 A CN109323369 A CN 109323369A
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- 238000010257 thawing Methods 0.000 title claims abstract description 132
- 238000000034 method Methods 0.000 title claims abstract description 104
- 238000004378 air conditioning Methods 0.000 title claims abstract description 49
- 230000008569 process Effects 0.000 claims abstract description 62
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims description 25
- 230000008859 change Effects 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 238000010586 diagram Methods 0.000 description 12
- 230000005494 condensation Effects 0.000 description 8
- 238000009833 condensation Methods 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- General Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning and its defrosting method and device, air-conditioning is under heating mode and runs, and method includes: to be in frosting state in the air-conditioning, detects to the air conditioning capacity of the air-conditioning in the first preset duration；According to the air conditioning capacity detected, judge whether the current frosting velocity of the air-conditioning exceeds preset frosting velocity；When the current frosting velocity exceeds the preset frosting velocity, it then controls the air-conditioning and enters defrost process, realize and frosting situation is judged according to air conditioning capacity, so as to timely enter defrost process, in the case where guaranteeing air-conditioning heating effect, defrosting effect is effectively improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a defrosting method and device thereof.
Background
In the heating operation process of the air conditioner, the outdoor heat exchanger operates as a condenser, and at the moment, because the outdoor temperature is too low, the outdoor heat exchanger is easy to frost due to heat absorption and condensation of the outdoor heat exchanger, and therefore defrosting operation needs to be carried out on the outdoor heat exchanger.
In the related art, in order to control the air conditioner to perform a defrosting process, it is generally determined whether the temperature of the outdoor heat exchanger reaches a preset temperature. However, the related art has the problems that due to different environmental factors of the air conditioner, it is difficult to unify the judgment conditions of the defrosting operation, so that the air conditioner is in use, or the air conditioner enters the defrosting operation too early to affect the user experience due to the reduction of the heating efficiency of the air conditioner, or enters the defrosting operation too late to cause the outdoor heat exchanger to frost too thick, the time for complete defrosting is longer, the sensible temperature fluctuation of the user is larger, and meanwhile, due to the frosting too thick, if the defrosting is not thorough, the problem that the longer the heating time of the air conditioner is, the worse the heating effect is caused is easily caused, and even the air conditioner is damaged.
Disclosure of Invention
The embodiment of the application provides a defrosting method of an air conditioner, solves the problem that the defrosting opportunity cannot be accurately judged in the prior art, and realizes judgment of the frosting condition according to the air conditioner capacity, so that a defrosting process can be timely entered, and the defrosting effect is effectively improved under the condition that the air conditioning heat effect is ensured.
The embodiment of the application provides a defrosting method of an air conditioner, wherein the air conditioner runs in a heating mode, and the method comprises the following steps: when the air conditioner is in a frosting state, detecting the air conditioning capacity of the air conditioner within a first preset time period; judging whether the current frosting speed of the air conditioner exceeds a preset frosting speed or not according to the detected air conditioner capacity; and when the current frosting speed exceeds the preset frosting speed, controlling the air conditioner to enter a defrosting process.
According to an embodiment of the present invention, the determining whether the frosting speed of the air conditioner exceeds a preset frosting speed according to the detected air conditioner capacity includes: according to the detected air conditioning capacity, obtaining the attenuation rates of the air conditioning capacity at different moments in the first preset time; if the decay rate at different times is gradually increased, comparing the decay rate at the current time with a decay rate threshold; and if the decay rate of the current moment is greater than the decay rate threshold, determining that the current frosting speed exceeds the preset frosting speed.
According to an embodiment of the present invention, before comparing the decay rate corresponding to the last time with a preset first decay rate threshold, the method further includes: and acquiring the attenuation rate threshold of the air conditioner according to the type of the air conditioner.
According to an embodiment of the present invention, the defrosting method of an air conditioner further includes: collecting the temperature of at least one temperature detection point of the air conditioner, and determining that the air conditioner is in a frosting state if the temperature of the temperature detection point is lower than a preset temperature threshold value; or detecting the indoor heating quantity within a second preset time, and determining that the air conditioner is in a frosting state if the attenuation quantity of the indoor heating quantity within the second preset time exceeds the preset attenuation quantity.
According to one embodiment of the present invention, the air conditioning capacity is the indoor heating capacity.
According to an embodiment of the present invention, after controlling the air conditioner to enter the defrosting process, the method further includes: detecting the temperature of a temperature detection point on the air conditioner, judging whether the air conditioner needs to exit the defrosting process or not according to the temperature, and controlling the air conditioner to exit the defrosting process when the air conditioner needs to exit the defrosting process; or detecting the change of the air conditioner capacity, judging whether the defrosting process needs to be exited or not according to the change of the air conditioner capacity, and controlling the air conditioner to exit the defrosting process when the defrosting process needs to be exited.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. when the air conditioner is in a frosting state, the frosting condition is judged according to the air conditioner capacity, the defrosting process can be timely started, and the defrosting effect is effectively improved under the condition that the air conditioning heat effect is ensured.
2. The influence of the outdoor heat exchanger of the air conditioner on the capacity of the air conditioner can be judged by calculating the attenuation rate of the capacity of the air conditioner along with the time, so that when the attenuation rate of the capacity of the air conditioner exceeds a preset threshold value, the frosting speed of the outdoor heat exchanger of the air conditioner exceeds the preset frosting speed, at the moment, the frosting degree of the outdoor side of the air conditioner is proper, the frosting thickness of the outdoor heat exchanger is moderate, the air conditioner is defrosted, the problem that the defrosting reduces the heating effect of the indoor side too early, and the problem that the defrosting is incomplete because the outdoor heat exchanger is frosted thickly can be solved.
Drawings
FIG. 1 is a schematic diagram of an air conditioner system according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an air conditioner control system according to an embodiment of the present invention;
fig. 3 is a flowchart of a defrosting method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart of a defrosting method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a block diagram illustrating a defrosting apparatus of an air conditioner according to an embodiment of the present invention;
fig. 6 is a block schematic view of a defrosting apparatus of an air conditioner according to an embodiment of the present invention;
fig. 7 is a block diagram schematically illustrating an air conditioner according to an embodiment of the present invention.
Detailed Description
The invention provides a defrosting method of an air conditioner, aiming at solving the problem that the defrosting time cannot be accurately judged in the prior art, and the method is used for determining the current defrosting speed of the air conditioner by detecting the air conditioning capacity of the air conditioner when the air conditioner is in a frosting state, judging whether to enter a defrosting process according to the frosting speed of the air conditioner, so that the defrosting process can be entered in time, and effectively improving the defrosting effect under the condition of ensuring the air conditioning heat effect.
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, a defrosting method of an air conditioner according to an embodiment of the present invention is directed to an air conditioner system and an air conditioner control system described below.
Specifically, as shown in fig. 1, an air conditioner system 100 on which the present invention is based includes: the air conditioner comprises a compressor 1, a four-way valve 2, an outdoor fan 31, an outdoor heat exchanger 32, a throttling component 4, an indoor fan 51 and an indoor heat exchanger 52, wherein the indoor fan 51 and the indoor heat exchanger 52 are correspondingly arranged and are arranged on the indoor side, and the outdoor fan 31 and the outdoor heat exchanger 32 are correspondingly arranged and are arranged on the outdoor side.
Wherein, the outlet of the outdoor heat exchanger 32 is connected with the inlet of the indoor heat exchanger 52 through the throttle part 4, the outlet of the indoor heat exchanger 52 is connected with the first end of the four-way valve 2, the second end of the four-way valve 2 is connected with the inlet of the compressor 1, the third end of the four-way valve 2 is connected with the outlet of the compressor 1, and the fourth end of the four-way valve 2 is connected with the inlet of the outdoor heat exchanger 32.
Therefore, the defrosting method of the air conditioner provided by the invention is based on the air conditioner system, and can realize the heating operation of the air conditioner through the transmission of the refrigerant. The outdoor heat exchanger 32 further has an air inlet, so that the outdoor heat exchanger 32 can perform heat absorption condensation when the air conditioner performs heating, that is, the outdoor heat exchanger 32 absorbs heat of outside air to perform condensation.
Further, a plurality of temperature sensors and a humidity sensor may be provided on the air conditioner system 100. For example, the air conditioner system 100 may include at least a first temperature sensor 61, a second temperature sensor 62, a third temperature sensor 63, and a first humidity sensor 70, wherein the first temperature sensor 61 may be disposed at an outlet of the outdoor heat exchanger 32 to detect an outlet temperature of the outdoor heat exchanger 32, the second temperature sensor 62 may be disposed at an air inlet of the outdoor heat exchanger 32 to detect a suction air temperature when the outdoor heat exchanger 32 performs a condensation operation, the third temperature sensor 63 may be disposed at an air outlet of the compressor 1 to detect a temperature of the refrigerant before the refrigerant enters the outdoor heat exchanger 32 after being compressed by the compressor 1, and the first humidity sensor 70 may be disposed on a casing of the outdoor heat exchanger 32 to detect a current outdoor relative humidity.
Still further, the air conditioner system 100 may be further provided with a fourth temperature sensor 64 and a fifth temperature sensor 65 at the inlet and inside of the outdoor heat exchanger 32, respectively; a sixth temperature sensor 66, a seventh temperature sensor 67, an eighth temperature sensor 68, and a ninth temperature sensor 69 may be further provided at the inlet, the outlet, the interior, and the housing of the indoor heat exchanger 52, respectively. It should be understood that the temperature sensor may also be located at any point where temperature is to be sensed, such as at the inlet of the compressor and the housing.
It should be noted that the air conditioner system may also be controlled by an air conditioner control system, where, as shown in fig. 2, the air conditioner control system 200 may include: an acquisition module 21, an analysis feedback module 22, a control module 23, a transmission module 24 and a storage module 25.
The obtaining module 21 may be configured to obtain real-time parameters of the air conditioner, such as a current operation rate and an air conditioning capacity of the air conditioner; the analysis feedback module 22 is connected with the acquisition module 21, and the analysis feedback module 22 can acquire data through the acquisition module 21, analyze the data to generate state information of the air conditioner, and feed the state information back to the transmission display module 24 and/or the control module 23; the transmission module 24 is connected to the analysis feedback module 22, and is configured to communicate with a user terminal, so as to send the air conditioner state information obtained by the analysis feedback module 22 to the user terminal and receive a control instruction fed back by the user terminal, where the user terminal may be a mobile terminal, a computer terminal, or a cloud terminal, which enables a user to receive the state information of the current air conditioner and/or send a control instruction; the control module 23 may be connected to the analysis feedback module 22 and the transmission module 24, respectively, to control the air conditioner according to the status information sent by the analysis feedback module 22 and/or according to the control instruction fed back by the transmission module 24; the storage module 25 may be connected to the obtaining module 21 and the transmission module 24, respectively, and is configured to store real-time parameters and control commands of the air conditioner.
That is, the air conditioner system 100 may be operated under the control of the air conditioner control system 200, including the control system 100 performing a heating operation under the control of the air conditioner control system 200. During the heating operation of the air conditioning system 100, the outdoor heat exchanger 32 is used as a condenser to absorb heat, and since the outdoor temperature is low in winter, the outdoor heat exchanger 32 is prone to frosting during the condensation process, thereby further affecting the further heating effect of the air conditioner.
Based on this, the embodiment of the invention provides a defrosting method of an air conditioner.
Example one
Fig. 3 is a flowchart of a defrosting method of an air conditioner according to the present invention. Wherein the air conditioner is operated in a heating mode.
As shown in fig. 3, the defrosting method of an air conditioner according to an embodiment of the present invention includes the following steps:
s101: and when the air conditioner is in a frosting state, detecting the air conditioning capacity of the air conditioner within a first preset time.
It should be noted that, based on the air conditioner system, during the heating operation of the air conditioner, the outdoor heat exchanger may be frosted due to condensation, and therefore, it is necessary to determine whether the air conditioner is in a frosted state, so as to determine whether defrosting is necessary after the air conditioner is in the frosted state.
It should be further noted that, since heat absorption is required when the air conditioner outdoor unit performs condensation, if the air conditioner outdoor unit is frosted, the temperature near the air conditioner outdoor unit is further reduced, that is, the efficiency of heat absorption and condensation performed by the outdoor heat exchanger is reduced, and further the indoor heating capacity is further reduced, therefore, whether the air conditioner is in a frosted state can be determined by judging the temperature of each position of the air conditioner, and whether the air conditioner is in a frosted state can also be determined by the indoor heating capacity of the air conditioner.
Specifically, after the air conditioner is operated for a period of time, for example, 4-8 minutes, the temperature of at least one temperature detection point of the air conditioner is collected, and if the temperature of the temperature detection point is lower than a preset temperature threshold value, it is determined that the air conditioner is in a frosting state. The at least one temperature detection point may be a point set by each temperature sensor in the air conditioner system, that is, the temperature detected by the at least one temperature sensor set on the air conditioner system may be collected, and if the temperature detected by the temperature sensor is lower than a preset temperature threshold of the temperature monitoring point, it is determined that the air conditioner is in a frosting state.
Or detecting the indoor heating quantity within a second preset time, and determining that the air conditioner is in a frosting state if the attenuation quantity of the indoor heating quantity within the second preset time exceeds the preset attenuation quantity. The attenuation amount of the heating amount is a difference between the heating amount at the next moment and the heating amount at the previous moment, for example, the difference between the heating amount at the end moment of the second preset time period and the heating amount at the start moment of the second preset time period.
That is, when it is detected that the temperature of at least one temperature detection point is lower than a preset temperature threshold, or when it is detected that the attenuation amount of the heating amount in the second preset time period exceeds a preset attenuation amount, the air conditioning capacity of the air conditioner in the first preset time period is further detected.
It should be understood that in the embodiment of the present invention, the air conditioning capacity may be indoor heating capacity, and may further include sensible heat capacity and latent heat capacity. The air conditioning capacity is related to the temperatures of the temperature detection points and the compressor frequency, that is, the temperatures detected by the temperature sensors and the compressor frequency are obtained through calculation.
S102: and judging whether the current frosting speed of the air conditioner exceeds a preset frosting speed or not according to the detected air conditioner capacity.
It should be noted that, the frosting condition of the outdoor heat exchanger of the air conditioner is mainly the condition that the attenuation of the air conditioning capacity is large, so the current frosting speed of the air conditioner can be judged by detecting the air conditioning capacity.
Specifically, as shown in fig. 4, determining whether the frosting speed of the air conditioner exceeds a preset frosting speed according to the detected air conditioner capacity includes:
s201: and acquiring the attenuation rates of the air conditioning capacity at different moments in a first preset time period according to the detected air conditioning capacity.
Specifically, the first preset time period may be divided into a plurality of times, and the difference between the attenuation amounts at the next time and the previous time within the first preset time period is sequentially obtained to obtain the attenuation rate at the next time.
S202: if the decay rate at different times is increasing, the decay rate at the current time is compared to a decay rate threshold.
S203: and if the decay rate at the current moment is greater than the decay rate threshold value, determining that the current frosting speed exceeds the preset frosting speed.
That is to say, after the attenuation rates at all times within the first preset duration are obtained, whether the attenuation rate at the next time is greater than the attenuation rate at the previous time is judged, if the attenuation rate at the next time is greater than the attenuation rate at the previous time, it is indicated that the frosting state of the outdoor heat exchanger begins to influence the overall heating efficiency of the air conditioner, whether the attenuation rate is greater than the attenuation rate threshold is further judged to determine the defrosting time, that is, if the attenuation rate is greater than the attenuation rate threshold, it is determined that the current frosting speed exceeds the preset frosting speed.
The method comprises the steps of obtaining an attenuation rate threshold value of the air conditioner according to the type of the air conditioner.
For example, the first preset time period may be equally divided into a plurality of times, for example, the first time X1, the second time X2, the third time X3, …, and the nth time Xn, the heating amounts corresponding to the respective times are A, B, C and …, so that the attenuation amount of the heating amount at the respective times within the first preset time period may be obtained, for example, the attenuation amount at the second time is (B-a), the attenuation amount at the third time is (C-B), and so on, the attenuation amount at any time within the first preset time period may be obtained, and since the first preset time period is equally divided, the attenuation amount at each time is the attenuation rate of the heating amount at each time. It should be understood that the decay rate may also be obtained by other methods such as summing or differencing.
Then, it is determined whether the decay rate at any later time within the first preset time period is greater than the decay rate at the previous time, for example, it is determined whether the decay rate (C-B) at the third time X3 is greater than the decay rate (B-a) at the second time X2, if the decay rate at the third time X3 is less than or equal to the decay rate at the second time X2, it indicates that the indoor heating amount at the third time X3 is not reduced or uniformly reduced with respect to the indoor heating amount at the second time X2, that is, the frosting degree of the outdoor heat exchanger does not affect the air conditioning capacity, at this time, the determination of the decay rate is continuously performed, if the decay rate at the third time X3 is greater than the decay rate at the second time X2, it indicates that the indoor heating amount at the third time X3 is significantly reduced with respect to the indoor heating amount at the second time X2, that the frosting degree of the outdoor heat exchanger already affects the air conditioning capacity, judging whether the frosting of the outdoor heat exchanger of the air conditioner has a deterioration trend, and further judging whether the frosting speed exceeds a preset frosting speed or not.
It should be noted that, because the intrinsic parameters of the air conditioners of different models are different, the attenuation rate threshold of the air conditioner can be obtained according to the models of the air conditioners, so as to determine whether the current frosting speed exceeds the preset frosting speed through the attenuation rate threshold, and prevent the air conditioner from defrosting too early or too late. Specifically, whether the attenuation rate at the current moment is greater than the attenuation rate threshold is judged to determine that the frosting degree of the outdoor heat exchanger seriously affects the air conditioning capacity, that is, when the current attenuation rate is less than or equal to the attenuation rate threshold, the current frosting speed does not exceed the preset frosting speed, and when the current attenuation rate is greater than the attenuation rate threshold, the current frosting speed exceeds the preset frosting speed.
Therefore, by detecting the attenuation rates at different moments and determining that the frosting speed exceeds the preset frosting speed when the attenuation rates are gradually increased and are larger than the preset attenuation threshold value, the frosting condition of the air conditioning system can be accurately determined when the air conditioner is in heating operation, and data guarantee is provided for the air conditioner to enter a defrosting process.
S103: and when the current frosting speed exceeds the preset frosting speed, controlling the air conditioner to enter a defrosting process.
It should be understood that when the current frosting speed does not exceed the preset frosting speed, the outdoor heat exchanger frosts, but the frosting speed is low or the frosting is thin and is not enough to start the defrosting operation, if the defrosting operation is started, the problem that the heating quantity is reduced too early due to the defrosting to influence the user experience can occur, when the current frosting speed exceeds the preset frosting speed, the frosting of the outdoor heat exchanger is serious, at the moment, the defrosting is performed, the defrosting time can be saved, the heating efficiency of the air conditioner can be ensured, and therefore when the current frosting speed is judged to exceed the preset frosting speed, the air conditioner is controlled to enter a defrosting process.
Further, after controlling the air conditioner to enter the defrosting process, the method further comprises the following steps: detecting the temperature of a temperature detection point on the air conditioner, judging whether the defrosting process needs to be exited or not according to the temperature, and controlling the air conditioner to exit the defrosting process when the defrosting process needs to be exited; or detecting the change of the air conditioner capacity, judging whether the defrosting process needs to be exited or not according to the change of the air conditioner capacity, and controlling the air conditioner to exit the defrosting process when the defrosting process needs to be exited.
It should be noted that, after the air conditioner enters the defrosting process, in order to save energy and ensure the heating requirement of the user, the air conditioner needs to be controlled to exit the defrosting process in time after the defrosting is finished.
Specifically, the temperature of a temperature detection point on the air conditioner is detected, for example, the temperature of any one or more temperature detection points on the air conditioner system is detected, whether the temperature of the temperature detection point reaches a preset temperature is judged, if so, it is determined that the air conditioner needs to exit the defrosting process, and the air conditioner is controlled to exit the defrosting process; if not, determining that the air conditioner still needs defrosting, and controlling the air conditioner to continue defrosting. In addition, the air conditioning capacity can be detected, and whether the defrosting process needs to be quitted or not is judged according to the change of the air conditioning capacity, namely the defrosting process is quitted when the air conditioning capacity is gradually recovered.
In summary, in the defrosting method of the air conditioner according to the embodiment of the present invention, when the air conditioner is in the heating mode and in the frosting state, the air conditioning capacity of the air conditioner within the first preset time period is detected, and then, according to the detected air conditioning capacity, whether the current frosting speed of the air conditioner exceeds the preset frosting speed is determined, and when the current frosting speed exceeds the preset frosting speed, the air conditioner is controlled to enter the defrosting process. Therefore, the defrosting method of the air conditioner provided by the embodiment of the invention can judge the frosting condition according to the air conditioner capacity, timely enter the defrosting process, and effectively improve the defrosting effect under the condition of ensuring the air conditioning heat effect.
Based on the same inventive concept, the embodiment of the invention also provides a system corresponding to the method in the first embodiment, which is shown in the second embodiment.
Example two
Fig. 5 is a block diagram illustrating a defrosting apparatus of an air conditioner according to an embodiment of the present invention. As shown in fig. 5, the defrosting apparatus 10 of an air conditioner according to an embodiment of the present invention includes: a capability detection module 11, a judgment module 12 and a control module 13.
The capacity detection module 11 is configured to detect the air conditioning capacity of the air conditioner within a first preset time period when the air conditioner is in a frosting state; the judging module 12 is configured to judge whether a current frosting speed of the air conditioner exceeds a preset frosting speed according to the detected air conditioner capacity; the control module 13 is configured to control the air conditioner to enter a defrosting process when the current defrosting speed exceeds a preset defrosting speed.
Further, the determining module 12 is specifically configured to: according to the detected air conditioning capacity, obtaining the attenuation rates of the air conditioning capacity at different moments within a first preset time length; if the attenuation rate is gradually increased, comparing the attenuation rate corresponding to the last moment with an attenuation rate threshold value; and if the attenuation rate corresponding to the last moment is greater than the attenuation rate threshold, determining that the current frosting speed exceeds the preset frosting speed.
Further, the determining module 12 is specifically configured to: the frosting judgment module is used for acquiring the temperature of at least one temperature detection point of the air conditioner, and determining that the air conditioner is in a frosting state if the temperature of the temperature detection point is lower than a preset temperature threshold value; or the frosting judgment module is further used for detecting the indoor heating amount within a second preset time, and if the attenuation of the indoor heating amount within the second preset time exceeds the preset attenuation, the air conditioner is determined to be in a frosting state.
Further, as shown in fig. 6, the defrosting device 10 of the air conditioner further includes: the defrosting monitoring module 14 is used for detecting the temperature of a temperature detection point on the air conditioner after the air conditioner is controlled to enter a defrosting process, judging whether the defrosting process needs to be exited or not according to the temperature, and controlling the air conditioner to exit the defrosting process when the defrosting process needs to be exited; or detecting the change of the air conditioner capacity, judging whether the defrosting process needs to be exited or not according to the change of the air conditioner capacity, and controlling the air conditioner to exit the defrosting process when the defrosting process needs to be exited.
In summary, in the defrosting device of the air conditioner according to the embodiment of the present invention, when the air conditioner is in the heating mode and in the frosting state, the capability detection module detects the air conditioner capability of the air conditioner within the first preset time period, then according to the detected air conditioner capability, the judgment module judges whether the current frosting speed of the air conditioner exceeds the preset frosting speed, and when the current frosting speed exceeds the preset frosting speed, the control module controls the air conditioner to enter the defrosting process. Therefore, the defrosting device of the air conditioner can judge the frosting condition according to the air conditioner capacity, timely enter the defrosting process, and effectively improve the defrosting effect under the condition of ensuring the air conditioning heat effect.
Since the apparatus described in the second embodiment of the present invention is an apparatus used for implementing the method of the first embodiment of the present invention, based on the method described in the first embodiment of the present invention, those skilled in the art can understand the specific structure and the variations of the system, and thus the details are not described herein. All the devices adopted in the method of the first embodiment of the present invention belong to the protection scope of the present invention.
In order to achieve the above object, an embodiment of the present invention further provides an air conditioner, as shown in fig. 7, the air conditioner 300 includes a defrosting apparatus 10 of the air conditioner.
In order to achieve the above object, an embodiment of the present invention further provides an electronic device, including a memory and a processor; the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to realize the defrosting method of the air conditioner.
To achieve the above object, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the foregoing defrosting method of an air conditioner.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the invention
With clear spirit and scope. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. A defrosting method of an air conditioner, characterized in that the air conditioner is operated in a heating mode, and the method comprises the following steps:
when the air conditioner is in a frosting state, detecting the air conditioning capacity of the air conditioner within a first preset time period;
judging whether the current frosting speed of the air conditioner exceeds a preset frosting speed or not according to the detected air conditioner capacity;
and when the current frosting speed exceeds the preset frosting speed, controlling the air conditioner to enter a defrosting process.
2. The defrosting method of an air conditioner according to claim 1, wherein the determining whether the frosting speed of the air conditioner exceeds a preset frosting speed according to the detected air conditioner capacity comprises:
according to the detected air conditioning capacity, obtaining the attenuation rates of the air conditioning capacity at different moments in the first preset time;
if the decay rate at different times is gradually increased, comparing the decay rate at the current time with a decay rate threshold;
and if the decay rate of the current moment is greater than the decay rate threshold, determining that the current frosting speed exceeds the preset frosting speed.
3. The defrosting method of an air conditioner according to claim 1, before comparing the decay rate corresponding to the last moment with a preset first decay rate threshold, further comprising:
and acquiring the attenuation rate threshold of the air conditioner according to the type of the air conditioner.
4. The defrosting method of an air conditioner according to any one of claims 1 to 3, further comprising:
collecting the temperature of at least one temperature detection point of the air conditioner, and determining that the air conditioner is in a frosting state if the temperature of the temperature detection point is lower than a preset temperature threshold value; or,
and detecting the indoor heating amount within a second preset time, and determining that the air conditioner is in a frosting state if the attenuation amount of the indoor heating amount within the second preset time exceeds the preset attenuation amount.
5. The defrosting method of an air conditioner according to any one of claims 1 to 3, wherein the air conditioning capacity is the indoor heating amount.
6. The defrosting method of an air conditioner according to any one of claims 1 to 3, further comprising, after the controlling the air conditioner to enter a defrosting process:
detecting the temperature of a temperature detection point on the air conditioner, judging whether the air conditioner needs to exit the defrosting process or not according to the temperature, and controlling the air conditioner to exit the defrosting process when the air conditioner needs to exit the defrosting process; or,
and detecting the change of the air conditioner capacity, judging whether the defrosting process needs to be exited or not according to the change of the air conditioner capacity, and controlling the air conditioner to exit the defrosting process when the defrosting process needs to be exited.
7. A defrosting apparatus of an air conditioner, wherein the air conditioner is operated in a heating mode, comprising:
the capacity detection module is used for detecting the air conditioner capacity of the air conditioner within a first preset time when the air conditioner is in a frosting state;
the judging module is used for judging whether the current frosting speed of the air conditioner exceeds a preset frosting speed or not according to the detected air conditioner capacity;
and the control module is used for controlling the air conditioner to enter a defrosting process when the current defrosting speed exceeds the preset defrosting speed.
8. The defrosting device of an air conditioner according to claim 7, wherein the judging module is specifically configured to:
according to the detected air conditioning capacity, obtaining the attenuation rates of the air conditioning capacity at different moments in the first preset time;
if the decay rate is gradually increased, comparing the decay rate corresponding to the last moment with a decay rate threshold;
and if the decay rate corresponding to the last moment is larger than the decay rate threshold, determining that the current frosting speed exceeds the preset frosting speed.
9. The defrosting device of an air conditioner according to claim 7, wherein the judging module is specifically configured to:
and acquiring the attenuation rate threshold corresponding to the air conditioner according to the type of the air conditioner.
10. The defrosting device of an air conditioner according to any one of claims 7 to 9, further comprising:
the frosting judgment module is used for acquiring the temperature of at least one temperature detection point of the air conditioner and determining that the air conditioner is in a frosting state if the temperature of the temperature detection point is lower than a preset temperature threshold value; or,
the frosting judgment module is also used for detecting the indoor heating quantity within a second preset time, and if the attenuation quantity of the indoor heating quantity within the second preset time exceeds the preset attenuation quantity, the air conditioner is determined to be in a frosting state.
11. The defrosting device of an air conditioner according to any one of claims 7 to 9, further comprising:
the defrosting monitoring module is used for detecting the temperature of a temperature detection point on the air conditioner after controlling the air conditioner to enter a defrosting process, judging whether the air conditioner needs to exit the defrosting process according to the temperature, and controlling the air conditioner to exit the defrosting process when judging that the air conditioner needs to exit the defrosting process; or detecting the change of the air conditioner capacity, judging whether the defrosting process needs to be exited or not according to the change of the air conditioner capacity, and controlling the air conditioner to exit the defrosting process when the defrosting process needs to be exited.
12. An air conditioner, comprising: the defrosting apparatus of an air conditioner as claimed in any one of claims 7 to 11.
13. An electronic device comprising a memory, a processor;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the defrosting method of the air conditioner as claimed in any one of claims 1 to 6.
14. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the program, when executed by a processor, implements a defrosting method of an air conditioner according to any one of claims 1 to 6.
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| CN110469989A (en) * | 2019-07-28 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
| CN110469993A (en) * | 2019-07-28 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
| CN110470003A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
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| CN110470010A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470002A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470013A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470009A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470013B (en) * | 2019-08-02 | 2022-03-29 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110470014A (en) * | 2019-08-03 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470018A (en) * | 2019-08-03 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470017A (en) * | 2019-08-03 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470018B (en) * | 2019-08-03 | 2022-04-19 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN111380180A (en) * | 2020-03-27 | 2020-07-07 | 广东美的制冷设备有限公司 | Air conditioner sterilization control method and device and computer readable storage medium |
| CN113531848A (en) * | 2021-07-29 | 2021-10-22 | 珠海格力电器股份有限公司 | Air conditioner mode adjusting method, control device, air conditioner and storage medium |
| CN113865259A (en) * | 2021-10-22 | 2021-12-31 | 珠海格力电器股份有限公司 | Defrosting control method and device, air cooler and refrigeration house |
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