CN105571074A - Method and device for controlling rotation speed of air conditioner external fan - Google Patents
Method and device for controlling rotation speed of air conditioner external fan Download PDFInfo
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- CN105571074A CN105571074A CN201610032637.8A CN201610032637A CN105571074A CN 105571074 A CN105571074 A CN 105571074A CN 201610032637 A CN201610032637 A CN 201610032637A CN 105571074 A CN105571074 A CN 105571074A
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
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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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a method and device for controlling the rotation speed of an air conditioner external fan. The method comprises the steps that the module temperature of an electrical control mainboard of an air conditioner external unit is detected; the rotation speed of the air conditioner external fan is determined according to the module temperature; and the external fan is controlled to operate according to the determined rotation speed. According to the method and device for controlling the rotation speed of the air conditioner external fan, the technical problems that overhigh system pressure and shut-down of a compressor are prone to occur in the case of high-load heating of an air conditioner in the prior art are solved, and the technical effect that the air conditioner can also normally operate for heating in high-temperature working conditions is achieved.
Description
Technical field
The present invention relates to air conditioner controlling technology field, in particular to a kind of method and apparatus controlling the outer rotation speed of fan of air-conditioning.
Background technology
Due to the restriction of frequency-changeable compressor self-operating characteristic, there is a limit minimum operation frequency in compressor.Because current R32 dedicated compressor is compared with R410A compressor, design of electrical motor difference is very little.Therefore, R32 compressor is compared with R410A compressor, and limit running frequency is similar to identical.When air-conditioning run under worst hot case heat time, compressor is easy to the situation occurring maintaining low frequency running, but, due to the refrigerant property of R32, under same frequency (being also under same displacement), the system loading of R32 air-conditioning is more much larger than the system loading of R410A air-conditioning.And system pressure is higher, be easy to cause air-conditioning because system loading is excessive cancel closedown.
How effectively to avoid system loading excessive, not yet propose effective solution at present.
Summary of the invention
Embodiments provide a kind of method controlling the outer rotation speed of fan of air-conditioning, to solve air-conditioning in prior art, under high load capacity heats situation, easily generation system pressure is too high, the technical problem of compressor shutdown, and the method comprises:
Detect the module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner; According to described module temperature, determine the rotating speed of the outer blower fan of described air-conditioning; Described outer fan operation is controlled according to the rotating speed determined.
In one embodiment, according to described module temperature, determine the rotating speed of described outer blower fan, comprise: the tachometer value corresponding according to each temperature range in the multiple temperature range preset and described multiple temperature range, determine the temperature range belonging to module temperature detected, and the tachometer value that this temperature range is corresponding; Using the tachometer value the determined rotating speed as described outer blower fan.
In one embodiment, the tachometer value that in the multiple temperature range preset and described multiple temperature range, each temperature range is corresponding comprises: when module temperature is less than the first predetermined threshold, outer blower fan runs with the first preset rotation speed; When module temperature is more than or equal to described first predetermined threshold, when being less than the second predetermined threshold, outer blower fan runs with the second preset rotation speed; When module temperature is more than or equal to described second predetermined threshold, the maximum (top) speed that outer blower fan allows with air-conditioning runs, and wherein, described first preset rotation speed is less than described second preset rotation speed, and described second preset rotation speed is less than described maximum (top) speed.
In one embodiment, detect the module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner, comprising: when described air-conditioning is in heating mode, detect the outdoor environment temperature of air-conditioning; When described outdoor environment temperature is greater than specific environment temperature threshold, detect the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner.
In one embodiment, detected the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner by outer Electrical Control mainboard temperature sensor, detected the outdoor environment temperature of air-conditioning by outer machine environment temperature-sensitive bag.
The embodiment of the present invention additionally provides a kind of device controlling the outer rotation speed of fan of air-conditioning, and to solve air-conditioning in prior art, under high load capacity heats situation, easily generation system pressure is too high, the technical problem of compressor shutdown, and this device comprises:
Module temperature detection module, for detecting the module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner; Rotating speed determination module, for according to described module temperature, determines the rotating speed of the outer blower fan of described air-conditioning; Control module, for controlling described outer fan operation according to the rotating speed determined.
In one embodiment, described rotating speed determination module comprises: interval judgement unit, for the tachometer value corresponding according to each temperature range in the multiple temperature range preset and described multiple temperature range, determine the temperature range belonging to module temperature detected, and the tachometer value that this temperature range is corresponding; Determining unit, for the tachometer value that will the determine rotating speed as described outer blower fan.
In one embodiment, the tachometer value that in the multiple temperature range preset and described multiple temperature range, each temperature range is corresponding comprises: when module temperature is less than the first predetermined threshold, outer blower fan runs with the first preset rotation speed; When module temperature is more than or equal to described first predetermined threshold, when being less than the second predetermined threshold, outer blower fan runs with the second preset rotation speed; When module temperature is more than or equal to described second predetermined threshold, the maximum (top) speed that outer blower fan allows with air-conditioning runs, and wherein, described first preset rotation speed is less than described second preset rotation speed, and described second preset rotation speed is less than described maximum (top) speed.
In one embodiment, described module temperature detection module comprises: outdoor environment temperature detecting unit, for when described air-conditioning is in heating mode, detects the outdoor environment temperature of air-conditioning; Module temperature detecting unit, for when described outdoor environment temperature is greater than specific environment temperature threshold, detects the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner.
In one embodiment, described module temperature detecting unit is specifically for detecting the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner by outer Electrical Control mainboard temperature sensor, described outdoor environment temperature detecting unit detects the outdoor environment temperature of air-conditioning by outer machine environment temperature-sensitive bag.
In the above-described embodiments; regulated by the rotating speed of the external blower fan of module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner; thus easily generation system pressure is too high under high load capacity heats situation to solve air-conditioning in prior art; the technical problem of compressor shutdown, reaches and ensures also can normally run the technique effect heated under worst hot case.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the method flow diagram according to the outer rotation speed of fan of the control air-conditioning of the embodiment of the present invention;
Fig. 2 is the apparatus structure block diagram according to the outer rotation speed of fan of the control air-conditioning of the embodiment of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, exemplary embodiment of the present invention and illustrating for explaining the present invention, but not as a limitation of the invention.
In order to solve in prior art air-conditioning when high load capacity heats; easily there is cancel closedown in compressor; and the problem that system pressure is too high; propose a kind of control logic of outer blower fan newly; that is, according to the change of heating load, contrast the temperature rising condition of outdoor unit modules simultaneously; external rotation speed of fan regulates, and heats to ensure that air-conditioning also can normally run under worst hot case.
As shown in Figure 1, the method for the outer rotation speed of fan of this control air-conditioning, can comprise the following steps:
Step 101: the module temperature detecting the automatically controlled mainboard of outdoor machine of air-conditioner;
Step 102: according to described module temperature, determines the rotating speed of the outer blower fan of described air-conditioning;
Step 103: control described outer fan operation according to the rotating speed determined.
In the above-described embodiments; regulated by the rotating speed of the external blower fan of module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner; thus easily generation system pressure is too high under high load capacity heats situation to solve air-conditioning in prior art; the technical problem of compressor shutdown, reaches and ensures also can normally run the technique effect heated under worst hot case.
When concrete enforcement, multiple temperature range can be preset, and set rotating speed corresponding to each temperature range, like this, after corresponding module temperature being detected, directly can determine this module temperature drops on which temperature range, then, the rotating speed using the rotating speed corresponding to the temperature range determined as follow-up outer blower fan.Namely, according to described module temperature, determine that the rotating speed of described outer blower fan can comprise: the tachometer value corresponding according to each temperature range in the multiple temperature range preset and described multiple temperature range, determine the temperature range belonging to module temperature detected, and the tachometer value that this temperature range is corresponding; Using the tachometer value the determined rotating speed as described outer blower fan.
For example, can preset three temperature ranges, and set tachometer value corresponding to each temperature range, module temperature is higher, then corresponding rotating speed is higher:
1) when module temperature is less than the first predetermined threshold, outer blower fan runs with the first preset rotation speed;
2) when module temperature is more than or equal to described first predetermined threshold, when being less than the second predetermined threshold, outer blower fan runs with the second preset rotation speed;
3) when module temperature is more than or equal to described second predetermined threshold, the maximum (top) speed that outer blower fan allows with air-conditioning runs;
Wherein, described first preset rotation speed is less than described second preset rotation speed, and described second preset rotation speed is less than described maximum (top) speed.
But it should be noted that in example it is only carry out exemplary description with three temperature ranges, can also select the temperature range of other quantity as required with actual conditions, the concrete division number of the application to interval is not construed as limiting.
Situation about heating is run under the method for rotation speed of fan is particluarly suitable for worst hot case outside the control air-conditioning that this example provides, particularly for R32 compressor, when under worst hot case, operation heats, compressor is easy to maintain low frequency running, now system pressure is higher, easily causes abnormal stopping.
Therefore, outdoor environment temperature can be detected at the module temperature detecting described outdoor machine of air-conditioner automatically controlled mainboard, to determine air-conditioning whether heating operation under worst hot case, thus determine to carry out adjustment of rotational speed necessity.Such as, when air-conditioning is in heating mode, detects the outdoor environment temperature of air-conditioning, when outdoor environment temperature is greater than specific environment temperature threshold, just detect the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner, to carry out the tactic adjustment of rotating speed.
When specific implementation, the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner can be detected by the temperature sensor that outer Electrical Control mainboard is arranged, the outdoor environment temperature of air-conditioning can be detected by outer machine environment temperature-sensitive bag.
In each embodiment above-mentioned, air-conditioning can be the split type room air conditioner using R32 cold-producing medium.
That is, in upper example, propose a kind of control logic of outer blower fan, according to the change of heating load, contrast outdoor unit modules temperature rise, external rotation speed of fan regulates simultaneously, thus air-conditioning can normally be run under worst hot case heat.
Be described below in conjunction with the method for a specific embodiment to the outer rotation speed of fan of above-mentioned control air-conditioning, but it should be noted that this specific embodiment is only to better the present invention is described, do not form inappropriate limitation of the present invention.
Suppose that air-conditioning is when environment temperature is greater than 20 DEG C, heating operation, when outer machine environment temperature-sensitive bag detects that outdoor environment temperature is between 20 to 25 DEG C, synchronously can detect the interior pipe temperature of air-conditioning and the module temperature of outer mainboard, the rotating speed of outer blower fan is adjusted according to the module temperature detected, particularly:
1) as module temperature < 85 DEG C, outer blower fan runs with the rotating speed of 400rpm;
2) as 85 DEG C≤module temperature < 95 DEG C, outer blower fan runs with the rotating speed of 600rpm;
3) when module temperature >=95 DEG C, outer blower fan runs with maximum speed.
That is, outer rotation speed of fan is controlled, to solve the problem heating heavy-duty service exception by the module temperature of outer machine controller.When air-conditioning is when ambient temperature is higher; start heating mode to run, the evaporimeter of interior machine is little with the heat transfer temperature difference of environment temperature, thus causes the high pressure P c of system higher; now for whole system; if outer rotation speed of fan reduces, so the heat exchange efficiency of low-pressure side reduces, and the low pressure Pe of system reduces; because the compression ratio of compressor is constant; the high pressure of system so can be caused also low together with step-down, thus serve the effect reducing system pressure, effectively protect the reliability of compressor.
Based on same inventive concept, additionally provide a kind of device controlling the outer rotation speed of fan of air-conditioning in the embodiment of the present invention, as described in the following examples.The principle of dealing with problems due to the device controlling the outer rotation speed of fan of air-conditioning is similar to the method controlling the outer rotation speed of fan of air-conditioning, therefore the enforcement controlling the device of the outer rotation speed of fan of air-conditioning see the enforcement of the method for the outer rotation speed of fan of control air-conditioning, can repeat part and repeats no more.Following used, term " unit " or " module " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably realizes with software, hardware, or the realization of the combination of software and hardware also may and conceived.Fig. 2 is a kind of structured flowchart of the device of the outer rotation speed of fan of control air-conditioning of the embodiment of the present invention, as shown in Figure 2, can comprise: module temperature detection module 201, rotating speed determination module 202 and control module 203, be described this structure below.
Module temperature detection module 201, for detecting the module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner;
Rotating speed determination module 202, for according to described module temperature, determines the rotating speed of the outer blower fan of described air-conditioning;
Control module 203, for controlling described outer fan operation according to the rotating speed determined.
In one embodiment, rotating speed determination module 202 can comprise: interval judgement unit, for the tachometer value corresponding according to each temperature range in the multiple temperature range preset and described multiple temperature range, determine the temperature range belonging to module temperature detected, and the tachometer value that this temperature range is corresponding; Determining unit, for the tachometer value that will the determine rotating speed as described outer blower fan.
In one embodiment, the tachometer value that in the multiple temperature range preset and described multiple temperature range, each temperature range is corresponding comprises: when module temperature is less than the first predetermined threshold, outer blower fan runs with the first preset rotation speed; When module temperature is more than or equal to described first predetermined threshold, when being less than the second predetermined threshold, outer blower fan runs with the second preset rotation speed; When module temperature is more than or equal to described second predetermined threshold, the maximum (top) speed that outer blower fan allows with air-conditioning runs, and wherein, described first preset rotation speed is less than described second preset rotation speed, and described second preset rotation speed is less than described maximum (top) speed.
In one embodiment, module temperature detection module 201 can comprise: outdoor environment temperature detecting unit, for when described air-conditioning is in heating mode, detects the outdoor environment temperature of air-conditioning; Module temperature detecting unit, for when described outdoor environment temperature is greater than specific environment temperature threshold, detects the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner.
In one embodiment, module temperature detecting unit specifically may be used for the module temperature being detected the automatically controlled mainboard of described outdoor machine of air-conditioner by outer Electrical Control mainboard temperature sensor, and outdoor environment temperature detecting unit specifically may be used for the outdoor environment temperature being detected air-conditioning by outer machine environment temperature-sensitive bag.
From above description; can find out; the embodiment of the present invention achieves following technique effect: regulated by the rotating speed of the external blower fan of module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner; thus easily generation system pressure is too high under high load capacity heats situation to solve air-conditioning in prior art; the technical problem of compressor shutdown, reaches and ensures also can normally run the technique effect heated under worst hot case.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned embodiment of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the embodiment of the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the embodiment of the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. control a method for the outer rotation speed of fan of air-conditioning, it is characterized in that, comprising:
Detect the module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner;
According to described module temperature, determine the rotating speed of the outer blower fan of described air-conditioning;
Described outer fan operation is controlled according to the rotating speed determined.
2. method according to claim 1, is characterized in that, according to described module temperature, determines the rotating speed of described outer blower fan, comprising:
The tachometer value corresponding according to each temperature range in the multiple temperature range preset and described multiple temperature range, determines the temperature range belonging to module temperature detected, and the tachometer value that this temperature range is corresponding;
Using the tachometer value the determined rotating speed as described outer blower fan.
3. method according to claim 2, is characterized in that, the tachometer value that in the multiple temperature range preset and described multiple temperature range, each temperature range is corresponding comprises:
When module temperature is less than the first predetermined threshold, outer blower fan runs with the first preset rotation speed;
When module temperature is more than or equal to described first predetermined threshold, when being less than the second predetermined threshold, outer blower fan runs with the second preset rotation speed;
When module temperature is more than or equal to described second predetermined threshold, the maximum (top) speed that outer blower fan allows with air-conditioning runs, and wherein, described first preset rotation speed is less than described second preset rotation speed, and described second preset rotation speed is less than described maximum (top) speed.
4. method according to claim 1, is characterized in that, detects the module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner, comprising:
When described air-conditioning is in heating mode, detect the outdoor environment temperature of air-conditioning;
When described outdoor environment temperature is greater than specific environment temperature threshold, detect the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner.
5. method according to claim 4, is characterized in that, is detected the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner by outer Electrical Control mainboard temperature sensor, is detected the outdoor environment temperature of air-conditioning by outer machine environment temperature-sensitive bag.
6. control a device for the outer rotation speed of fan of air-conditioning, it is characterized in that, comprising:
Module temperature detection module, for detecting the module temperature of the automatically controlled mainboard of outdoor machine of air-conditioner;
Rotating speed determination module, for according to described module temperature, determines the rotating speed of the outer blower fan of described air-conditioning;
Control module, for controlling described outer fan operation according to the rotating speed determined.
7. device according to claim 6, is characterized in that, described rotating speed determination module comprises:
Interval judgement unit, for the tachometer value corresponding according to each temperature range in the multiple temperature range preset and described multiple temperature range, determines the temperature range belonging to module temperature detected, and the tachometer value that this temperature range is corresponding;
Determining unit, for the tachometer value that will the determine rotating speed as described outer blower fan.
8. device according to claim 7, is characterized in that, the tachometer value that in the multiple temperature range preset and described multiple temperature range, each temperature range is corresponding comprises:
When module temperature is less than the first predetermined threshold, outer blower fan runs with the first preset rotation speed;
When module temperature is more than or equal to described first predetermined threshold, when being less than the second predetermined threshold, outer blower fan runs with the second preset rotation speed;
When module temperature is more than or equal to described second predetermined threshold, the maximum (top) speed that outer blower fan allows with air-conditioning runs, and wherein, described first preset rotation speed is less than described second preset rotation speed, and described second preset rotation speed is less than described maximum (top) speed.
9. device according to claim 6, is characterized in that, described module temperature detection module comprises:
Outdoor environment temperature detecting unit, for when described air-conditioning is in heating mode, detects the outdoor environment temperature of air-conditioning;
Module temperature detecting unit, for when described outdoor environment temperature is greater than specific environment temperature threshold, detects the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner.
10. device according to claim 9, it is characterized in that, described module temperature detecting unit is specifically for detecting the module temperature of the automatically controlled mainboard of described outdoor machine of air-conditioner by outer Electrical Control mainboard temperature sensor, described outdoor environment temperature detecting unit is specifically for detecting the outdoor environment temperature of air-conditioning by outer machine environment temperature-sensitive bag.
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| CN107975915A (en) * | 2017-11-09 | 2018-05-01 | 广东美的暖通设备有限公司 | Control method, device and the computer-readable recording medium of air conditioner |
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| CN110145837B (en) * | 2019-04-19 | 2020-11-27 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN110454936A (en) * | 2019-08-05 | 2019-11-15 | 广东美的制冷设备有限公司 | Air conditioner and its control method, device |
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| CN111442491B (en) * | 2020-04-10 | 2022-04-01 | 广东美的制冷设备有限公司 | Air conditioner, control method and control device thereof, and computer readable storage medium |
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| CN113465044B (en) * | 2021-06-11 | 2022-12-27 | 青岛海尔空调电子有限公司 | Outdoor unit of air conditioner |
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| CN115031391A (en) * | 2022-05-26 | 2022-09-09 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and electronic equipment |
| CN115031391B (en) * | 2022-05-26 | 2023-10-13 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and electronic equipment |
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Inventor after: Wu Jun Inventor after: Lai Xiaocheng Inventor before: Wu Jun Inventor before: Lai Xiao |