CN104833061A - Air-conditioner and protection and control method and device thereof - Google Patents
Air-conditioner and protection and control method and device thereof Download PDFInfo
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- CN104833061A CN104833061A CN201510268546.XA CN201510268546A CN104833061A CN 104833061 A CN104833061 A CN 104833061A CN 201510268546 A CN201510268546 A CN 201510268546A CN 104833061 A CN104833061 A CN 104833061A
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- fan
- conditioner
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- rotating speed
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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
-
- 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
-
- 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
- F24F2110/30—Velocity
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- Engineering & Computer Science (AREA)
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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 discloses an air-conditioner and a protection and control method and device thereof. The air-conditioner comprises an outdoor unit, and the outdoor unit comprises a direct current draught fan. The protection and control method comprises the following steps that 1 square wave pulse signals of a wind speed feedback end of the direct current draught fan are sampled; 2 current rotating speed and rotating speed period of the direct current draught fan are calculated according to the square wave pulse signals of the wind speed feedback end; 3 current status of the air-conditioner is obtained; 4 whether protection and control are needed to be conducted on the air-conditioner is judged according to the current status of the air-conditioner and the current rotating speed and the rotating speed period of the direct current draught fan. By means of the air-conditioner and the protection and control method and device thereof, when typhoon comes, the protection and control can be conducted on the air-conditioner in time, components of a control circuit are prevented from being damaged, and the reliability of the air-conditioner is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly a kind of protecting control method of air-conditioner, a kind of protecting control device of air-conditioner and a kind of air-conditioner with this protecting control device.
Background technology
In correlation technique, DC fan is widely applied in air-conditioner, and the control circuit of DC fan is comparatively complicated, although it improves energy saving and the comfortableness of air-conditioning, too increases cost.
When the air-conditioner with DC fan uses in the coastal area of multiple stage wind, typhoon makes DC fan become a generator sometimes, the electric energy sent is counter is fed to control circuit, just very likely the device breakdown such as the electric capacity in DC fan control circuit can be burnt, cause the fault of air-conditioner, affect the use of user.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is a kind of protecting control method proposing air-conditioner, can realize the protecting control to air-conditioner in time, prevent the damage of components and parts in control circuit when typhoon, improves the reliability of air-conditioner.
Another object of the present invention is the protecting control device proposing a kind of air-conditioner.An also object of the present invention is to propose a kind of air-conditioner.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of protecting control method of air-conditioner, wherein, described air-conditioner comprises off-premises station, described off-premises station comprises DC fan, described protecting control method comprises the following steps: S1, the square-wave pulse signal of the wind speed feedback end of described DC fan of sampling; S2, calculates the current rotating speed of described DC fan and the speed cycle of described DC fan according to the square-wave pulse signal of described wind speed feedback end; S3, obtains the current state of described air-conditioner; And S4, the speed cycle according to the current state of described air-conditioner and the current rotating speed of described DC fan and described DC fan judges whether to need to carry out protecting control to described air-conditioner.
According to the protecting control method of the air-conditioner of the embodiment of the present invention, first current rotating speed and the speed cycle of DC fan is calculated by the square-wave pulse signal of the wind speed feedback end of DC fan of sampling, then the current state of air-conditioner is obtained, finally judge whether to need to carry out protecting control to air-conditioner according to the speed cycle of the current state of air-conditioner and the current rotating speed of DC fan and DC fan, thus conservation treatment can be carried out in time when typhoon, prevent the components and parts of control circuit in air-conditioner from burning, reduce the maintenance rate of air-conditioner, save maintenance cost, and improve the reliability of air-conditioner, ensure that the use of user needs.
According to one embodiment of present invention, in step s 4 which, if the current state of described air-conditioner is operating condition, then calculate the speed discrepancy between the current rotating speed of described DC fan and preset rotation speed, and judge whether described speed discrepancy reaches typhoon door rotary speed threshold value, wherein, if judge that described speed discrepancy reaches described typhoon door rotary speed threshold value, then control described DC fan to shut down, and cut off the power supply of described DC fan.
According to one embodiment of present invention; in step s 4 which; if the current state of described air-conditioner is for shutting down or holding state; then judge whether the current rotating speed of described DC fan reaches typhoon door rotary speed threshold value according to the speed cycle of described DC fan; wherein; if judge that the current rotating speed of described DC fan reaches described typhoon door rotary speed threshold value, then the power supply cutting off described DC fan starts to stop described DC fan.
For achieving the above object, the present invention on the other hand embodiment proposes a kind of protecting control device of air-conditioner, wherein, described air-conditioner comprises off-premises station, described off-premises station comprises DC fan, described protecting control device comprises: sampling module, for the square-wave pulse signal of the wind speed feedback end of described DC fan of sampling; Control module; for calculating the current rotating speed of described DC fan and the speed cycle of described DC fan according to the square-wave pulse signal of described wind speed feedback end; and obtain the current state of described air-conditioner, and judge whether to need to carry out protecting control to described air-conditioner according to the speed cycle of the current state of described air-conditioner and the current rotating speed of described DC fan and described DC fan.
According to the protecting control device of the air-conditioner of the embodiment of the present invention, control module calculates current rotating speed and the speed cycle of DC fan by the square-wave pulse signal of the wind speed feedback end of sampling module sampling DC fan, then the current state of air-conditioner is obtained, last control module judges whether to need to carry out protecting control to air-conditioner according to the current state of air-conditioner and the current rotating speed of DC fan and the speed cycle of DC fan, thus conservation treatment can be carried out in time when typhoon, prevent the components and parts of control circuit in air-conditioner from burning, reduce the maintenance rate of air-conditioner, save maintenance cost, and improve the reliability of air-conditioner, ensure that the use of user needs.
According to one embodiment of present invention, if the current state of described air-conditioner is operating condition, described control module then calculates the speed discrepancy between the current rotating speed of described DC fan and preset rotation speed, and judge whether described speed discrepancy reaches typhoon door rotary speed threshold value, wherein, if judge that described speed discrepancy reaches described typhoon door rotary speed threshold value, described control module then controls described DC fan and shuts down, and cuts off the power supply of described DC fan.
According to one embodiment of present invention; if the current state of described air-conditioner is for shutting down or holding state; according to the speed cycle of described DC fan, described control module then judges whether the current rotating speed of described DC fan reaches typhoon door rotary speed threshold value; wherein; if judge that the current rotating speed of described DC fan reaches described typhoon door rotary speed threshold value, the power supply that described control module then cuts off described DC fan starts to stop described DC fan.
In addition, embodiments of the invention also proposed a kind of air-conditioner, and it comprises the protecting control device of above-mentioned air-conditioner.
The air-conditioner of the embodiment of the present invention, can carry out conservation treatment in time when typhoon, prevents the components and parts of control circuit from burning, and reduces maintenance rate, saves maintenance cost, and improves the reliability of product, ensures that the use of user needs.
Accompanying drawing explanation
Fig. 1 is the flow chart of the protecting control method of air-conditioner according to the embodiment of the present invention;
Fig. 2 is the flow chart of the protecting control method of air-conditioner according to the present invention's specific embodiment; And
Fig. 3 is the block diagram of the protecting control device of air-conditioner according to the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Describe the protecting control method of air-conditioner, the protecting control device of air-conditioner that propose according to the embodiment of the present invention with reference to the accompanying drawings and there is the air-conditioner of this protecting control device.
Fig. 1 is the flow chart of the protecting control method of air-conditioner according to the embodiment of the present invention.Wherein, air-conditioner comprises off-premises station, and off-premises station comprises DC fan.As shown in Figure 1, the protecting control method of this air-conditioner comprises the following steps:
S1, the square-wave pulse signal of the wind speed feedback end of sampling DC fan.
Wherein, in air-conditioner course of normal operation, drive DC fan to run by the such as MCU output pwm signal of the controller in air-conditioner to DC fan driver element, and calculate the current rotating speed of DC fan and the speed cycle of DC fan by the square-wave pulse signal of the wind speed feedback end of the sampling module real-time sampling DC fan in control circuit.
S2, the square-wave pulse signal according to wind speed feedback end calculates the current rotating speed of DC fan and the speed cycle of DC fan.
S3, obtains the current state of air-conditioner.
S4, the speed cycle according to the current state of air-conditioner and the current rotating speed of DC fan and DC fan judges whether to need to carry out protecting control to air-conditioner.
Wherein, according to one embodiment of present invention; in step s 4 which, if the current state of air-conditioner is operating condition, then the speed discrepancy between the current rotating speed of described DC fan and preset rotation speed is calculated; and judge whether described speed discrepancy reaches typhoon door rotary speed threshold value; wherein, if judge that described speed discrepancy reaches described typhoon door rotary speed threshold value, then control described DC fan and shut down; and cut off the power supply of described DC fan, thus realize the protecting control to air-conditioner.
And; in step s 4 which; if the current state of described air-conditioner is for shutting down or holding state; then judge whether the current rotating speed of described DC fan reaches typhoon door rotary speed threshold value according to the speed cycle of DC fan; wherein; if judge that the current rotating speed of described DC fan reaches described typhoon door rotary speed threshold value, then the power supply cutting off described DC fan starts to stop described DC fan, thus realizes the protecting control to air-conditioner.
Therefore say; in an embodiment of the present invention; analyze based on the square-wave pulse signal of software algorithm to the reflection DC fan rotating speed gathered and judge; and with the running status of the rotating speed of DC fan and air-conditioner for according to judging whether will carry out protecting control to air-conditioner when typhoon; thus when solving typhoon on off-premises station DC fan control circuit in the problem that may damage of element, improve the reliability of air-conditioner product.
Particularly, according to one embodiment of present invention, as shown in Figure 2, the protecting control method of above-mentioned air-conditioner comprises the following steps:
S201, enters typhoon conservation treatment process.
S202, gathers the square-wave pulse signal of wind speed feedback end, and calculates the speed cycle of DC fan, and calculate the current rotating speed of DC fan.
S203, judges whether air-conditioner is in operating condition.If so, step S204 is performed; If not, step S207 is performed.
S204, compares to calculate the speed discrepancy between the current rotating speed of DC fan and preset rotation speed by the current rotating speed of DC fan and preset rotation speed.
S205, judges whether speed discrepancy reaches typhoon door rotary speed threshold value, and wherein, typhoon door rotary speed threshold value can be demarcated.If so, then step S206 is performed; If not, typhoon conservation treatment process is exited.
S206, controls DC fan and shuts down, and cut off the power supply of DC fan, then exit typhoon conservation treatment process.
By the speed cycle of DC fan, S207, judges whether the current rotating speed of DC fan reaches typhoon door rotary speed threshold value.If so, then step S208 is performed; If not, typhoon conservation treatment process is exited.
S208, cuts off the power supply of DC fan, stops DC fan to start, then exits typhoon conservation treatment process.
In sum, according to the protecting control method of the air-conditioner of the embodiment of the present invention, first current rotating speed and the speed cycle of DC fan is calculated by the square-wave pulse signal of the wind speed feedback end of DC fan of sampling, then the current state of air-conditioner is obtained, finally judge whether to need to carry out protecting control to air-conditioner according to the speed cycle of the current state of air-conditioner and the current rotating speed of DC fan and DC fan, thus conservation treatment can be carried out in time when typhoon, prevent the components and parts of control circuit in air-conditioner from burning, reduce the maintenance rate of air-conditioner, save maintenance cost, and improve the reliability of air-conditioner, ensure that the use of user needs.
Fig. 3 is the block diagram of the protecting control device of air-conditioner according to the embodiment of the present invention.Wherein, air-conditioner comprises off-premises station, and off-premises station comprises DC fan.As shown in Figure 3, the protecting control device of this air-conditioner comprises: sampling module 10 and control module 20.
Wherein, sampling module 10 is for the square-wave pulse signal of the wind speed feedback end of DC fan of sampling.Control module 20 calculates the current rotating speed of DC fan and the speed cycle of DC fan for the square-wave pulse signal according to wind speed feedback end; and obtain the current state of air-conditioner, and judge whether to need to carry out protecting control to air-conditioner according to the speed cycle of the current state of air-conditioner and the current rotating speed of DC fan and DC fan.
According to one embodiment of present invention; if the current state of air-conditioner is operating condition; control module 20 calculates the speed discrepancy between the current rotating speed of DC fan and preset rotation speed; and judge whether speed discrepancy reaches typhoon door rotary speed threshold value; wherein, if judge that speed discrepancy reaches typhoon door rotary speed threshold value, control module 20 controls DC fan and shuts down; and cut off the power supply of DC fan, thus realize the protecting control to air-conditioner.
And; if the current state of air-conditioner is for shutting down or holding state; according to the speed cycle of DC fan, control module 20 judges whether the current rotating speed of DC fan reaches typhoon door rotary speed threshold value; wherein; if judge that the current rotating speed of DC fan reaches typhoon door rotary speed threshold value; the power supply that control module 20 cuts off DC fan starts to stop DC fan, thus realizes the protecting control to air-conditioner.
Therefore say; the protecting control device of the air-conditioner of the embodiment of the present invention analyzes based on the square-wave pulse signal of software algorithm to the reflection DC fan rotating speed gathered and judge; and with the running status of the rotating speed of DC fan and air-conditioner for according to judging whether will carry out protecting control to air-conditioner when typhoon; thus when solving typhoon on off-premises station DC fan control circuit in the problem that may damage of element, improve the reliability of air-conditioner product.
According to the protecting control device of the air-conditioner of the embodiment of the present invention, control module calculates current rotating speed and the speed cycle of DC fan by the square-wave pulse signal of the wind speed feedback end of sampling module sampling DC fan, then the current state of air-conditioner is obtained, last control module judges whether to need to carry out protecting control to air-conditioner according to the current state of air-conditioner and the current rotating speed of DC fan and the speed cycle of DC fan, thus conservation treatment can be carried out in time when typhoon, prevent the components and parts of control circuit in air-conditioner from burning, reduce the maintenance rate of air-conditioner, save maintenance cost, and improve the reliability of air-conditioner, ensure that the use of user needs.
In addition, embodiments of the invention also proposed a kind of air-conditioner, and it comprises the protecting control device of above-mentioned air-conditioner.
The air-conditioner of the embodiment of the present invention, can carry out conservation treatment in time when typhoon, prevents the components and parts of control circuit from burning, and reduces maintenance rate, saves maintenance cost, and improves the reliability of product, ensures that the use of user needs.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (7)
1. a protecting control method for air-conditioner, is characterized in that, described air-conditioner comprises off-premises station, and described off-premises station comprises DC fan, and described protecting control method comprises the following steps:
S1, the square-wave pulse signal of the wind speed feedback end of described DC fan of sampling;
S2, calculates the current rotating speed of described DC fan and the speed cycle of described DC fan according to the square-wave pulse signal of described wind speed feedback end;
S3, obtains the current state of described air-conditioner; And
S4, the speed cycle according to the current state of described air-conditioner and the current rotating speed of described DC fan and described DC fan judges whether to need to carry out protecting control to described air-conditioner.
2. the protecting control method of air-conditioner as claimed in claim 1; it is characterized in that; in step s 4 which; if the current state of described air-conditioner is operating condition; then calculate the speed discrepancy between the current rotating speed of described DC fan and preset rotation speed; and judge whether described speed discrepancy reaches typhoon door rotary speed threshold value, wherein
If judge that described speed discrepancy reaches described typhoon door rotary speed threshold value, then control described DC fan and shut down, and cut off the power supply of described DC fan.
3. the protecting control method of air-conditioner as claimed in claim 1; it is characterized in that; in step s 4 which; if the current state of described air-conditioner is for shutting down or holding state; then judge whether the current rotating speed of described DC fan reaches typhoon door rotary speed threshold value according to the speed cycle of described DC fan; wherein
If judge that the current rotating speed of described DC fan reaches described typhoon door rotary speed threshold value, then the power supply cutting off described DC fan starts to stop described DC fan.
4. a protecting control device for air-conditioner, is characterized in that, described air-conditioner comprises off-premises station, and described off-premises station comprises DC fan, and described protecting control device comprises:
Sampling module, for the square-wave pulse signal of the wind speed feedback end of described DC fan of sampling;
Control module; for calculating the current rotating speed of described DC fan and the speed cycle of described DC fan according to the square-wave pulse signal of described wind speed feedback end; and obtain the current state of described air-conditioner, and judge whether to need to carry out protecting control to described air-conditioner according to the speed cycle of the current state of described air-conditioner and the current rotating speed of described DC fan and described DC fan.
5. the protecting control device of air-conditioner as claimed in claim 4; it is characterized in that; if the current state of described air-conditioner is operating condition; described control module then calculates the speed discrepancy between the current rotating speed of described DC fan and preset rotation speed; and judge whether described speed discrepancy reaches typhoon door rotary speed threshold value; wherein
If judge that described speed discrepancy reaches described typhoon door rotary speed threshold value, described control module then controls described DC fan and shuts down, and cuts off the power supply of described DC fan.
6. the protecting control device of air-conditioner as claimed in claim 4; it is characterized in that; if the current state of described air-conditioner is for shutting down or holding state; according to the speed cycle of described DC fan, described control module then judges whether the current rotating speed of described DC fan reaches typhoon door rotary speed threshold value; wherein
If judge that the current rotating speed of described DC fan reaches described typhoon door rotary speed threshold value, the power supply that described control module then cuts off described DC fan starts to stop described DC fan.
7. an air-conditioner, is characterized in that, comprises the protecting control device of the air-conditioner according to any one of claim 4-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510268546.XA CN104833061B (en) | 2015-05-22 | 2015-05-22 | Air conditioner and its protection control method and protection control device |
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| CN201510268546.XA CN104833061B (en) | 2015-05-22 | 2015-05-22 | Air conditioner and its protection control method and protection control device |
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| CN104833061A true CN104833061A (en) | 2015-08-12 |
| CN104833061B CN104833061B (en) | 2017-12-08 |
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| CN201510268546.XA Active CN104833061B (en) | 2015-05-22 | 2015-05-22 | Air conditioner and its protection control method and protection control device |
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| CN105572592A (en) * | 2016-01-22 | 2016-05-11 | 广东美的暖通设备有限公司 | Rotating speed testing device and rotating speed testing method for DC motor, and testing system for air conditioner |
| CN106288159A (en) * | 2016-08-05 | 2017-01-04 | 广东美的暖通设备有限公司 | The control method of air-conditioner, control device and air-conditioner |
| CN109323426A (en) * | 2018-11-09 | 2019-02-12 | 青岛海尔空调器有限总公司 | The control method and air conditioner of air conditioner |
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| CN109323426B (en) * | 2018-11-09 | 2020-12-25 | 青岛海尔空调器有限总公司 | Control method of air conditioner and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104833061B (en) | 2017-12-08 |
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