CN110701728B - Defrosting control method based on room cooling, computer readable storage medium and air conditioner - Google Patents
Defrosting control method based on room cooling, computer readable storage medium and air conditioner Download PDFInfo
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- CN110701728B CN110701728B CN201910798064.3A CN201910798064A CN110701728B CN 110701728 B CN110701728 B CN 110701728B CN 201910798064 A CN201910798064 A CN 201910798064A CN 110701728 B CN110701728 B CN 110701728B
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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
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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Abstract
The invention provides a defrosting control method based on room cooling, a computer readable storage medium and an air conditioner. The invention selects different defrosting modes according to the building characteristics and the climate characteristics of different areas, optimizes the control of the defrosting modes, can realize targeted defrosting according to different areas, greatly reduces the temperature drop amplitude of a room during defrosting, and improves the comfort of a human body during defrosting.
Description
Technical Field
The invention relates to the technical field of air conditioner defrosting, in particular to a defrosting control method based on room cooling, a computer readable storage medium and an air conditioner.
Background
In the heating operation process of the household split air conditioner, the outdoor unit is easy to generate frost at low temperature, and the system operation must be converted into a refrigeration mode after being operated for a period of time to heat and defrost the condenser. However, when defrosting is carried out, how to control defrosting time is a difficult problem, at present, defrosting modes are various, but only one defrosting mode is available on the same system, environmental characteristics and building characteristics of different regions are different, and defrosting rates, frost layer characteristics and room loads are different, so that a defrosting mode aiming at regional characteristics needs to be developed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a defrosting control method based on room temperature reduction, which solves the problem of large room temperature reduction amplitude during defrosting in areas with large building load, optimizes defrosting control and minimizes the influence of room temperature fluctuation on human body feeling.
In order to achieve the purpose, the invention adopts the following technical scheme:
a defrosting control method based on room cooling judges whether a defrosting mode S is selected or not by identifying local area information, detects a defrosting temperature difference delta T in real time under the condition of selecting the defrosting mode S, selects defrosting time as a further judgment condition after comparing the defrosting temperature difference delta T with a B value, and judges whether to increase or decrease the defrosting temperature according to the defrosting time, wherein the B value is a receivable cooling value. Different defrosting modes are selected according to the building characteristics and the climate characteristics of different regions, the control of the defrosting modes is optimized, targeted defrosting can be realized according to different regions, the temperature drop amplitude of a room during defrosting is greatly reduced, and the comfort of a human body during defrosting is improved.
Further, when the defrosting temperature difference delta T is larger than the B value, the defrosting time is selected as a further judgment condition, specifically, when the defrosting time T1 is larger than the N value, when the defrosting period T2 is smaller than the P value, the temperature Y is increased, the N value is the standard defrosting time, the P value is the standard defrosting period, the defrosting period is the total value of the defrosting time plus the defrosting time, the Y value is a preset value, and otherwise, the original defrosting temperature is maintained. When the defrosting temperature difference delta T is larger than the acceptable cooling value B of the human body, discomfort of the human body is inevitably caused, next judgment is carried out, the temperature is not directly regulated and controlled for further accurate judgment, when the defrosting period T2 is detected to be smaller than the standard defrosting period P, the defrosting period is in inverse proportion relation to the defrosting temperature difference, the larger the defrosting temperature difference is, the shorter the defrosting period is, the temperature Y is increased, defrosting can be carried out in advance, the defrosting time is shortened, meanwhile, accurate judgment and control can be realized, and the method is more scientific.
Further, when the defrosting temperature difference delta T is smaller than the B value, the defrosting time is selected as a further judgment condition, specifically, when the defrosting time T1 is smaller than N-M, the temperature Y is increased, otherwise, the original defrosting temperature is maintained, the N value is the standard defrosting time, the M value is an allowable error value, and the Y value is a preset value. When the defrosting temperature difference delta T is smaller than the acceptable temperature drop value of the human body, the next step of judgment is still carried out, in order to further and accurately judge by combining the defrosting time, the defrosting efficiency and effect are effectively improved, meanwhile, the temperature condition of a room is always within the acceptable range of the human body during defrosting, and the comfort of the human body is ensured.
Further, the specific step of judging whether to select the defrosting mode by identifying the local area information is to detect the position information through the positioning sensor and judge whether the area belongs to a high-humidity area, if the area is judged to be the high-humidity area, the defrosting mode S is selected, otherwise, the conventional defrosting mode A is selected. In high-humidity areas, the frosting speed is high generally, the heating quantity is attenuated quickly, and the building characteristics of the areas are poor in heat insulation effect, the defrosting period cannot be prolonged under the condition that the heating requirement of a room is met, so that the defrosting time can be shortened by selecting the defrosting mode S, and the temperature fluctuation range of the room is controlled within an acceptable range by people in combination with the room comfort standard.
Further, the detection of the defrosting temperature difference Δ T is specifically a real-time detection of the temperature of the inner ring, and the temperature difference before and after defrosting of the inner ring is the defrosting temperature difference. The temperature difference before and after the inner ring defrosting is adopted as the defrosting temperature difference is a relatively accurate judgment method, and the accurate defrosting temperature difference can be obtained, so that the subsequent calculation and judgment are facilitated, and the defrosting efficiency is effectively improved.
Furthermore, the positioning sensor is a GPRS module, and the region to which the positioning sensor belongs is judged according to a positioning signal fed back by the GPRS module. The GPRS module can accurately feed back positioning information, a plurality of air conditioners can carry the GPRS module, the positioning sensor does not need to be installed again by adopting the GPRS module for positioning, the cost is saved, the positioning accuracy is high, and the waste of resources caused by the wrong selection of the defrosting mode due to the positioning error is effectively avoided.
Further, in the case of selecting the defrosting mode S, by comparing the sizes of Δ T1 and Δ T2, Δ T1 is the temperature difference between the outer ring and the outer pipe, Δ T2 is a preset defrosting temperature difference, and if Δ T1 is less than or equal to Δ T2, defrosting is performed, otherwise, defrosting is not performed. Whether defrosting is carried out or not is judged according to the basic defrosting condition, and the condition that a defrosting mode is started by mistake, so that the heating effect is poor and energy consumption is wasted is avoided.
Further, in the defrosting process, the temperature of the inner ring and the temperature of the outer ring are detected in real time through the temperature sensors. Through real-time detection of the temperature, system monitoring is facilitated, defrosting conditions are accurately reflected, adjustment is made in time, energy is reasonably and effectively utilized, and waste is avoided.
A computer readable storage medium storing a computer program which, when invoked by a processor, implements a method of controlling defrosting based on cooling of a room as claimed in any one of the preceding claims.
An air conditioner comprising a processor and a memory for storing a computer program which, when invoked by the processor, implements a method of defrosting control based on cooling of a room as claimed in any preceding claim.
The defrosting control method based on room cooling, the computer readable storage medium and the air conditioner provided by the invention have the beneficial effects that: different defrosting modes are selected according to the building characteristics and the climate characteristics of different areas, the control of the defrosting modes is optimized, targeted defrosting can be realized according to different areas, a method for shortening defrosting time is adopted, defrosting is started at the early stage of defrosting, the defrosting time can be shortened, the room temperature fluctuation range is detected by combining the room comfort standard, the room temperature fluctuation range is controlled within the acceptable range of human beings, the comfort of human bodies in the room under the defrosting condition is ensured, and the market competitiveness of products can be improved.
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FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.
Example 1: a defrosting control method based on room temperature reduction.
A defrosting control method based on room cooling comprises the steps that position information is detected through a positioning sensor, whether an area where the area is located belongs to a high-humidity area or not is judged according to the position information, a defrosting mode S is selected if the area is judged to be the high-humidity area, a conventional defrosting mode A is selected if the area is not judged to be the high-humidity area, a defrosting temperature difference delta T is detected in real time under the condition that the defrosting mode S is selected, defrosting time is selected as a further judgment condition after the defrosting temperature difference delta T and a defrosting time B are compared, whether defrosting temperature is increased or decreased is judged and selected according to the defrosting time, and the defrosting temperature B is a value capable of being cooled; when the defrosting temperature difference delta T is greater than the B value, selecting defrosting time as a further judgment condition, specifically, when the defrosting time T1 is greater than the N value, when a defrosting period T2 is less than the P value, increasing the temperature Y, wherein the N value is standard defrosting time, the P value is standard defrosting period, the defrosting period is the total value of unfrozen time plus defrosting time, the Y value is a preset value, and otherwise, maintaining the original defrosting temperature; when the defrosting temperature difference delta T is smaller than the B value, the defrosting time is selected as a further judgment condition, specifically, when the defrosting time T1 is smaller than N-M, the temperature Y is increased, otherwise, the original defrosting temperature is maintained, the N value is the standard defrosting time, the M value is an allowable error value, and the Y value is a preset value.
In the embodiment, different defrosting modes are selected according to the building characteristics and the climate characteristics of different regions, and the control of the defrosting modes is optimized, so that targeted defrosting can be realized according to different regions, the temperature drop amplitude of a room during defrosting is greatly reduced, and the comfort of a human body during defrosting is improved; under the condition that the defrosting temperature difference delta T is judged to be larger than or smaller than the acceptable temperature drop value of the human body, the next judgment is still carried out, and the judgment and regulation result is more accurate and more scientific.
Example 2: a defrosting control method based on room temperature reduction.
On the basis of embodiment 1, in this embodiment, a wall-mounted air conditioner is used, and when the air conditioner is started to perform heating operation, the installation area determined by the GPRS module is called first, and it is determined that the area is a southern area and belongs to a high-humidity area, and then the defrosting mode S is activated. If the air conditioner heating operation is carried out for 35min, the defrosting condition is met, the outer ring temperature T1 is 2.5 ℃, the inner ring temperature T2 is 21 ℃, the B value is 2.5 ℃, the N value is 3min, the M value is 0.5min, the Y value is 5 ℃, defrosting is carried out at this time, the defrosting time T1 is 2.4min after defrosting is finished, the inner ring temperature T2 'is 19.2 ℃, the defrosting temperature difference Delta T2-T2' is 21-19.2 is 1.8 ℃, namely the defrosting temperature difference Delta T is less than the B value, the temperature does not need to be increased at this time, the defrosting time T1 is judged to be 2.4min and less than N-M, the temperature is increased by 0.5 ℃, the next defrosting period is operated according to the modified parameters, and the process is continued after defrosting is finished.
The embodiment also comprises a corresponding table of the outer ring temperature, the defrosting time and the acceptable temperature drop value of the human body, which is as follows:
TABLE 1 corresponding table of the outer ring temperature, defrosting time and acceptable temperature drop value of human body
Example 3: a computer readable storage medium.
A computer-readable storage medium storing a computer program that, when invoked by a processor, implements the method for controlling defrosting based on room cooling according to any one of embodiment 1 or embodiment 2.
Example 4: an air conditioner.
An air conditioner comprising a processor and a memory for storing a computer program which, when invoked by the processor, implements the method of controlling defrosting based on room cooling according to any one of embodiment 1 or embodiment 2.
The above description is only for the preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, and therefore, all equivalent or modifications that do not depart from the spirit of the present invention are intended to fall within the scope of the present invention.
Claims (7)
1. A defrosting control method based on room cooling is characterized in that whether a defrosting mode S is selected or not is judged by identifying local area information, a defrosting temperature difference delta T is detected in real time under the condition that the defrosting mode S is selected, defrosting time is selected as a further judgment condition after the defrosting temperature difference delta T and a B value are compared, the original defrosting temperature is selectively increased or maintained according to the defrosting time judgment, and the B value is a value capable of receiving cooling; the detection of the defrosting temperature difference delta T is specifically the real-time detection of the temperature of the inner ring, and the temperature difference before and after defrosting of the inner ring is the defrosting temperature difference;
when the defrosting temperature difference delta T is greater than the B value, selecting defrosting time as a further judgment condition, specifically, when the defrosting time T1 is greater than the N value, when a defrosting period T2 is less than the P value, increasing the defrosting temperature Y, wherein the N value is standard defrosting time, the P value is standard defrosting period, the defrosting period is the total value of unfrozen time plus defrosting time, the Y value is a preset value, otherwise, maintaining the original defrosting temperature;
when the defrosting temperature difference delta T is smaller than the B value, the defrosting time is selected as a further judgment condition, specifically, when the defrosting time T1 is smaller than N-M, the defrosting temperature Y is increased, otherwise, the original defrosting temperature is maintained, the N value is the standard defrosting time, the M value is an allowable error value, and the Y value is a preset value.
2. A defrosting control method based on room cooling as claimed in claim 1, wherein: the specific step of judging whether to select the defrosting mode S by identifying the local area information is to detect the position information through the positioning sensor and judge whether the area belongs to a high-humidity area, select the defrosting mode S if the area is judged to be the high-humidity area, and otherwise select the conventional defrosting mode A.
3. A defrosting control method based on room cooling as claimed in claim 2, wherein: the positioning sensor is a GPRS module and judges the region according to a positioning signal fed back by the GPRS module.
4. A defrosting control method based on room cooling as claimed in claim 1, wherein: in the case of selecting the defrosting mode S, by comparing the sizes of delta T1 and delta T2, delta T1 is the temperature difference between the outer ring and the outer pipe, delta T2 is the preset defrosting temperature difference, if delta T1 is less than or equal to delta T2, defrosting is carried out, otherwise, defrosting is not carried out.
5. A defrosting control method based on room cooling as claimed in claim 1, wherein: in the defrosting process, the temperature of the inner ring and the outer ring is detected in real time through the temperature sensor.
6. A computer-readable storage medium storing a computer program, characterized in that: the computer program, when invoked by a processor, implements the method for controlling defrosting based on room cooling of any one of claims 1 to 5.
7. An air conditioner comprising a processor and a memory for storing a computer program, characterized in that: the computer program, when invoked by the processor, implements the method for controlling defrosting based on room cooling of any one of claims 1 to 5.
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| CN111664547A (en) * | 2020-05-06 | 2020-09-15 | 海信（山东）空调有限公司 | Air conditioner |
| CN112460740A (en) * | 2020-11-30 | 2021-03-09 | 珠海格力电器股份有限公司 | Defrosting control method and device |
| CN113339940A (en) * | 2021-05-31 | 2021-09-03 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
| CN114413415B (en) * | 2021-12-15 | 2023-05-12 | 珠海格力电器股份有限公司 | Defrosting control method of air conditioner and controller thereof |
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| JPH068082B2 (en) * | 1985-06-27 | 1994-02-02 | 日本電装株式会社 | Air conditioner for vehicle |
| CN104567148B (en) * | 2014-12-23 | 2017-02-22 | 珠海格力电器股份有限公司 | Air conditioning defrost method and device |
| CN105135629B (en) * | 2015-09-30 | 2018-01-09 | 海信（山东）空调有限公司 | Air conditioner defrosting control method and air conditioner |
| CN206556201U (en) * | 2017-03-17 | 2017-10-13 | 珠海格力电器股份有限公司 | Air-conditioning defrosting control system |
| CN107655150A (en) * | 2017-10-16 | 2018-02-02 | 广东美的暖通设备有限公司 | Air-conditioner defrosting control device and method |
| CN109323366B (en) * | 2018-09-14 | 2021-02-23 | 广东美的制冷设备有限公司 | Control method and device of air conditioner and air conditioner |
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