CN111998494A - Method and device for preventing indoor unit of high-static-pressure air duct machine from blowing water and related equipment - Google Patents

Method and device for preventing indoor unit of high-static-pressure air duct machine from blowing water and related equipment Download PDF

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Publication number
CN111998494A
CN111998494A CN202010725698.9A CN202010725698A CN111998494A CN 111998494 A CN111998494 A CN 111998494A CN 202010725698 A CN202010725698 A CN 202010725698A CN 111998494 A CN111998494 A CN 111998494A
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motor unit
current
working
threshold value
power
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Chinese (zh)
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刘军
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Guangdong Jiwei Technology Co Ltd
Guangdong Giwee Technology Co Ltd
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Guangdong Jiwei Technology Co Ltd
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Priority to CN202010725698.9A priority Critical patent/CN111998494A/en
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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
    • 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
    • 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
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application provides a method, a device and related equipment for preventing an indoor unit of a high-static-pressure air pipe machine from blowing water, wherein the indoor unit comprises a motor unit, and a system judges the working state of the air pipe machine firstly. And if the working state is the refrigeration state, acquiring the working current and/or the working power of the motor unit. The system identifies whether the rated static pressure of the motor unit is matched with the length of the external air pipe or not according to the magnitude relation between the working current and the first current threshold value or between the working power and the first power threshold value, and calculates to obtain a first matching degree between the rated static pressure of the motor unit and the length of the external air pipe after the rated static pressure of the motor unit is identified to be not matched with the length of the external air pipe. And finally, the system correspondingly adjusts the rotating speed of the motor unit according to the first matching degree, and the motor unit are matched with each other. In this application, the system is after the rotational speed adjustment with motor unit, and motor unit's rated static pressure can with external tuber pipe length phase-match, and the indoor set can not effectively improve tuber pipe machine's comfort level and reliability because of wind speed is too big outside blowing off the water collector to the comdenstion water.

Description

Method and device for preventing indoor unit of high-static-pressure air duct machine from blowing water and related equipment
Technical Field
The application relates to the technical field of air conditioners, in particular to a method and a device for preventing an indoor unit of a high-static-pressure air duct machine from blowing water and related equipment.
Background
The air pipe type air conditioner is mainly applied to the field of building engineering, and most of the air pipe type air conditioner conveys the air outlet of the air conditioner to a required position through installing an air pipe. Present high static pressure tuber pipe formula air conditioner leaves the factory the static pressure setting higher, when on-the-spot actual installation, be limited to the topography of installation place etc. sometimes, high static pressure tuber pipe formula air conditioner does not connect the tuber pipe or the tuber pipe that connects is shorter, this length that can make the rated static pressure of air conditioner and external tuber pipe is not matched with, the air-out wind speed that leads to the air conditioner is too big, thereby cause the produced comdenstion water of indoor set refrigeration to be taken outside the unit along with the air-out, take place the phenomenon of blowing promptly, influence the travelling comfort and the reliability of air conditioner, bring uncomfortable sense for the user.
Disclosure of Invention
The application mainly aims to provide a method, a device and related equipment for preventing an indoor unit of a high-static-pressure air pipe machine from blowing water, and aims to overcome the defect that the water blowing phenomenon is easily caused due to the fact that the length of a rated static pressure and the length of an external air pipe are not matched in the indoor unit of the existing high-static-pressure air pipe machine.
In order to achieve the above object, the present application provides a method for preventing an indoor unit of a high static pressure air duct machine from blowing water, the indoor unit including a motor unit, the method including:
judging whether the current working state of the air pipe machine is a refrigeration state or not;
if the current working state of the air duct machine is a refrigerating state, acquiring the working current and/or working power of the motor unit;
judging whether the working current is greater than a first current threshold or not, or judging whether the working power is greater than a first power threshold or not;
if the working current is greater than a first current threshold value, or the working power is greater than a first power threshold value, calling a second current threshold value and/or a second power threshold value, and calculating to obtain a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value, the second current threshold value, or the working power, the first power threshold value and the second power threshold value;
and correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
Further, the step of calculating a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold and the second current threshold includes:
calculating a first difference between the operating current and the first current threshold, and calculating a second difference between the second current threshold and the first current threshold;
and calculating the ratio of the first difference to the second difference to obtain the first matching degree.
Further, the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold includes:
screening to obtain a first rotating speed rate corresponding to the first matching degree according to a pre-constructed mapping relation table of the matching degree and the rotating speed rate;
and reducing the rotating speed of the motor unit according to the first rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
Further, after the step of determining whether the working current is greater than a first current threshold or determining whether the working power is greater than a first power threshold, the method includes:
and if the working current is greater than a first current threshold value or the working power is greater than a first power threshold value, outputting prompt information, wherein the prompt information is used for prompting an operator that the air duct machine is currently in an adjusting state.
Further, after the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold, the method includes:
and taking the adjusted rotating speed of the motor unit as the default rotating speed of the motor unit.
Further, before the step of determining whether the current working state of the air duct machine is a cooling state, the method includes:
judging whether the running time of the motor unit is not less than a time threshold value or not;
and if the running time of the motor unit is not less than the time threshold, outputting a command for judging whether the current working state of the air duct machine is a refrigerating state.
Further, the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold includes:
judging whether the current first matching degree is larger than a matching threshold value;
if the current first matching degree is larger than the matching threshold, stopping running the motor unit, and calculating according to the current rotating speed of the motor unit and a preset proportion to obtain an initial rotating speed;
the motor unit is operated again, and after the rotating speed of the motor unit reaches the initial rotating speed, the second matching degree of the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit is recalculated;
acquiring a corresponding second rotating speed rate according to the second matching degree;
and reducing the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
The application still provides a device that indoor set of preventing high static pressure tuber pipe machine blows water, the indoor set includes motor unit, the device includes:
the first judgment module is used for judging whether the current working state of the air duct machine is a refrigeration state or not;
the acquisition module is used for acquiring the working current and/or working power of the motor unit if the current working state of the air duct machine is a refrigeration state;
the second judgment module is used for judging whether the working current is greater than a first current threshold or judging whether the working power is greater than a first power threshold;
the calculation module is used for calling a second current threshold value if the working current is greater than a first current threshold value or the working power is greater than a first power threshold value, and calculating a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value and the second current threshold value or according to the working power, the first power threshold value and the second power threshold value;
and the adjusting module is used for correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
Further, the calculation module includes:
a first calculation unit configured to calculate a first difference between the operating current and the first current threshold, and calculate a second difference between the second current threshold and the first current threshold;
and the second calculating unit is used for calculating the ratio of the first difference to the second difference to obtain the first matching degree.
Further, the adjusting module includes:
the screening unit is used for screening to obtain a first rotating speed corresponding to the first matching degree according to a pre-constructed matching degree and rotating speed mapping relation table;
and the first adjusting unit is used for reducing the rotating speed of the motor unit according to the first rotating speed until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
Further, the apparatus further includes:
and the prompting module is used for outputting prompting information if the working current is greater than a first current threshold value or the working power is greater than a first power threshold value, wherein the prompting information is used for prompting an operator that the air duct machine is currently in an adjusting state.
Further, the apparatus further includes:
and the setting module is used for taking the rotating speed of the motor unit after the adjustment as the default rotating speed of the motor unit.
Further, the apparatus further includes:
the third judgment module is used for judging whether the running time of the motor unit is not less than a time threshold value or not;
and the output module is used for outputting a command for judging whether the current working state of the air duct machine is a refrigeration state or not if the running time of the motor unit is not less than a time threshold.
Further, the adjusting module includes:
the judging unit is used for judging whether the current first matching degree is larger than a matching threshold value;
the stopping unit is used for stopping running the motor unit if the current first matching degree is larger than a matching threshold value, and calculating according to the current rotating speed of the motor unit and a preset proportion to obtain an initial rotating speed;
the restarting unit is used for operating the motor unit again, and recalculating a second matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit after the rotating speed of the motor unit reaches the initial rotating speed;
the acquisition unit is used for acquiring a corresponding second rotating speed rate according to the second matching degree;
and the second adjusting unit is used for reducing the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
The present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any one of the above methods when executing the computer program.
The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the method of any of the above.
The method, the device and the related equipment for preventing the indoor unit of the high-static-pressure air duct machine from blowing water are provided, wherein the indoor unit comprises a motor unit, and a system judges whether the current working state of the air duct machine is a refrigerating state or not. And if the current working state of the air duct machine is a refrigerating state, acquiring the working current and/or the working power of the motor unit. The system judges whether the working current is larger than a first current threshold or whether the working power is larger than a first power threshold. And if the working current is greater than the first current threshold value or the working power is greater than the first power threshold value, calling a second current threshold value, and calculating to obtain a first matching degree of the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value and the second current threshold value or according to the working power, the first power threshold value and the second power threshold value. And finally, the system correspondingly adjusts the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than a first current threshold value or the working power of the motor unit is not larger than a first power threshold value. In this application, the system is behind the rotational speed adjustment with motor unit, and motor unit's rated static pressure can with external tuber pipe length phase-match, and the indoor set can not blow off the comdenstion water outward (avoided blowing promptly) the water collector because of the wind speed is too big, effectively improves tuber pipe machine's comfort level and reliability to and user's use is experienced.
Drawings
FIG. 1 is a schematic diagram illustrating steps of a method for preventing an indoor unit of a high static pressure air duct unit from blowing water according to an embodiment of the present disclosure;
fig. 2 is a block diagram illustrating an overall structure of an apparatus for preventing water blowing from an indoor unit of a high static pressure air duct machine according to an embodiment of the present disclosure;
fig. 3 is a block diagram schematically illustrating a structure of a computer device according to an embodiment of the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, in an embodiment of the present application, a method for preventing an indoor unit of a high static pressure air duct machine from blowing water is provided, where the indoor unit includes a motor unit, and the method includes:
s1, judging whether the current working state of the air duct machine is a refrigeration state or not;
s2, if the current working state of the air duct machine is a refrigeration state, obtaining the working current and/or working power of the motor unit;
s3, judging whether the working current is larger than a first current threshold or not, or judging whether the working power is larger than a first power threshold or not;
s4, if the working current is larger than a first current threshold value, or the working power is larger than a first power threshold value, calling a second current threshold value and/or a second power threshold value, and calculating to obtain a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value, the second current threshold value, or the working power, the first power threshold value and the second power threshold value;
and S5, correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
In this embodiment, the duct machine is a high static pressure duct machine (the static pressure value is above 50 Pa), and the duct machine includes an indoor unit and a motor unit, where the motor unit is a direct current motor and is configured to provide power for a fan of the indoor unit, so that the fan rotates to supply air. The system firstly judges whether the current working state of the air pipe machine is a heating state or a refrigerating state, if the current working state is the heating state, the indoor machine can not generate condensed water, so that the water blowing phenomenon can not occur even if the rated static pressure of the motor unit is not matched with the length of the external air pipe, and the system does not need to carry out the next detection action. If the current working state of the air duct machine is a refrigerating state, condensed water can be generated indoors, and the water blowing phenomenon can occur when the rated static pressure of the motor unit is not matched with the length of the external air duct. The system obtains the current working current and/or working power of the motor unit, wherein the working current is the current value when the motor unit normally operates at present, and the working power is the power value when the motor unit normally operates at present. The system calls a first current threshold value recorded in advance to be compared with the working current in a numerical value mode, or calls a first power threshold value recorded in advance to be compared with the working power in a numerical value mode. The first current threshold is a current value measured by the motor unit under a rated static pressure, and the first power threshold is a power value measured by the motor unit under the rated static pressure, and is measured by a designer through an experiment. If the current working current of the motor unit is not greater than the first current threshold value or the working power is not greater than the first power threshold value, it is indicated that the actual static pressure value of an external air pipe pipeline of the motor unit is greater than the nominal rated static pressure value of the motor unit, at the moment, the actual air volume of the motor unit is smaller than or equal to the rated air volume, and the phenomenon that condensed water is blown out of the water receiving tray due to overlarge air speed cannot occur. If the current working current of the motor unit is greater than the first current threshold value or the working power is greater than the first power, it is indicated that the actual static pressure value of the external air pipe pipeline of the motor unit is less than the nominal rated static pressure value of the motor unit, at the moment, the actual air volume of the motor unit is greater than the rated air volume, and the condensate water may be blown out of the water receiving tray due to the overlarge air speed, at the moment, the system needs to correspondingly adjust the rotating speed of the motor unit according to the preset rule so as to reduce the air speed. Specifically, the system firstly calls a second current threshold and/or a second power threshold which are recorded in advance, wherein the second current threshold is a current value measured by the motor unit under the condition that the static pressure is 0Pa, the second power threshold is a power value measured by the motor unit under the condition that the static pressure is 0Pa, and the second power threshold is measured by a designer through experiments. The system can calculate by taking the current value as a calculation reference, and subtract the first current threshold value from the working current to obtain a first difference value between the working current and the first current threshold value; and subtracting the first current threshold from the second current threshold to obtain a second difference value between the first current threshold and the second current threshold. Or the system calculates by taking the power value as a calculation reference, and subtracts the first power threshold from the working power to obtain a first difference between the working power and the first power threshold; and subtracting the first power threshold from the second power threshold to obtain a second difference value between the first power threshold and the second power threshold. And then, the system divides the first difference value by the second difference value to obtain a ratio between the first difference value and the second difference value, and the ratio represents the first matching degree of the rated static pressure of the current motor unit and the length of the external air pipe. The database in the system stores a pre-constructed mapping relation table of matching degree and rotating speed rate, and comprises a plurality of groups of matching degrees and rotating speeds which correspond to each other. And the system screens and obtains a first rotating speed rate corresponding to the first matching degree according to the matching degree and rotating speed rate mapping relation table. And then, reducing the rotating speed of the motor unit according to the first rotating speed rate, and monitoring the working current and/or the working power of the motor unit in real time until the rotating speed of the motor unit is reduced to the state that the working current is not greater than a first current threshold value, or the working power of the motor unit is not greater than a first power threshold value. At the moment, the actual static pressure value of the external air pipe pipeline of the motor unit is larger than the nominal rated static pressure value of the motor unit, the actual air volume of the motor unit is smaller than or equal to the rated air volume, and the condensate water cannot be blown out of the water receiving disc due to overlarge air speed, so that the water blowing of the indoor unit is avoided.
Further, the step of calculating a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold and the second current threshold includes:
s401, calculating a first difference value between the working current and the first current threshold value, and calculating a second difference value between the second current threshold value and the first current threshold value;
s402, calculating the ratio of the first difference value to the second difference value to obtain the first matching degree.
In this embodiment, the system substitutes the working current and the first current threshold into a first formula, and calculates a first difference between the working current and the first current threshold, where the first formula is: i is1-I2＝Z1，I1For operating current, I2Is a first current threshold value, Z1Is the first difference. And substituting the second current threshold and the first current threshold into a second formula by the system, and calculating to obtain a second difference value between the second current threshold and the first current threshold, wherein the second formula is I0-I2＝Z2，I0Is a second current threshold value, I2Is a first current threshold value, Z2Is the second difference. The system substitutes the first difference value and the second difference value into a third formula respectively, and the ratio between the first difference value and the second difference value is obtained through calculation, wherein the third formula is Z1/Z2K is the ratio, characterizes the first degree of matching of the rated static pressure of the current motor unit and the external air pipe length promptly, and the larger the value of the first degree of matching, explains that the situation of mismatching of the rated static pressure of the current motor unit and the external air pipe length is more serious.
Further, the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold includes:
s501, screening to obtain a first rotating speed rate corresponding to the first matching degree according to a pre-constructed matching degree and rotating speed rate mapping relation table;
s502, reducing the rotating speed of the motor unit according to the first rotating speed until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
In this embodiment, a mapping table of matching degrees and rotational speed rates is pre-constructed in the internal database of the system, and includes a plurality of groups of matching degrees and rotational speed rates corresponding to each other. Specifically, the matching degree is: 0-0.2, corresponding to a rotational speed rate of S1(ii) a The matching degree is as follows: 0.2-0.5, corresponding to a rotational speed rate of S2(ii) a The matching degree is as follows: 0.5-0.8, corresponding to a rotational speed rate of S3(ii) a The matching degree is as follows: 0.8-1.0, corresponding to a rotational speed rate of S4. Wherein S is1<S2<S3<S4The larger the value of the matching degree is, the more serious the mismatching condition of the rated static pressure of the current motor unit and the length of the external air pipe is, so that the motor unit needs to be reduced at a faster rotating speed rate on the premise of not influencing the comfort of a user. And the system screens and obtains a first rotating speed rate corresponding to the first matching degree according to the matching degree and rotating speed rate mapping relation table. And then, the system reduces the rotating speed of the motor unit according to the first rotating speed rate, and monitors the working current and/or the working power of the motor unit in real time until the rotating speed of the motor unit is reduced to the state that the working current is not greater than a first current threshold value, or the working power of the motor unit is not greater than a first power threshold value. At the moment, the actual static pressure value of the external air pipe pipeline of the motor unit is larger than the nominal rated static pressure value of the motor unit, the actual air volume of the motor unit is smaller than or equal to the rated air volume, and the condensate water cannot be blown out of the water receiving disc due to overlarge air speed, so that the water blowing of the indoor unit is avoided.
Further, after the step of determining whether the working current is greater than a first current threshold or determining whether the working power is greater than a first power threshold, the method includes:
and S6, if the working current is larger than a first current threshold value or the working power is larger than a first power threshold value, outputting prompt information, wherein the prompt information is used for prompting an operator that the air duct machine is currently in an adjustment state.
In this embodiment, when the system recognizes that the working current of the motor unit is greater than the first current threshold, or the working power is greater than the first power threshold, it indicates that the actual static pressure value of the external air pipe of the motor unit is less than the nominal rated static pressure value of the motor unit, and at this time, the actual air volume of the motor unit is greater than the nominal air volume, which may cause the condensed water to be blown out of the water pan due to an excessively large air speed. Therefore, the system then needs to adjust the rotation speed of the motor unit accordingly (the adjustment process is as described above). At this time, the system firstly outputs prompt information, the prompt information is used for prompting an operator (such as a user or an installer of the air duct machine) that the air duct machine is currently in an adjusting state, the operator does not need to perform other operation actions (such as manually adjusting the rotating speed of the motor unit) on the air duct machine, and interference on automatic adjustment of the system is avoided. The prompt message may be a text message (for example, a prompt text is output through a display screen), or may be a sound message (for example, a prompt sound similar to "dripping" is emitted), so that the operator can know the message in time.
Further, after the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold, the method includes:
and S7, taking the adjusted rotating speed of the motor unit as the default rotating speed of the motor unit.
In this embodiment, after the system adjusts the rotation speed of the motor unit according to the first matching degree (that is, the adjustment is performed until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold), the system takes the current rotation speed as the default rotation speed of the motor unit. After the air duct machine is started for the next time, the rotating speed of the motor unit during normal working is based on the default rotating speed and does not work according to the rated power any more, so that the calculation of the first matching degree and the adjustment of the rotating speed of the motor unit are not needed again, and the comfort and the reliability of the air duct machine are effectively improved.
Further, before the step of determining whether the current working state of the air duct machine is a cooling state, the method includes:
s8, judging whether the running time of the motor unit is not less than a time threshold value;
and S9, if the running time of the motor unit is not less than the time threshold, outputting a command for judging whether the current working state of the air duct machine is a refrigerating state.
In this embodiment, after the air duct machine is initially installed and started, the motor unit needs to operate for a period of time before reaching a stable state, and the accuracy of the first matching degree calculated by the system is higher at this time. Therefore, after the air duct machine is started, the system needs to acquire the running time of the motor unit, compare the running time with the time threshold value, and judge whether the current running time of the motor unit is not less than the time threshold value. The time threshold is the time required by the motor unit from the beginning to the stable operation, and is measured by the experiment of a designer. If the running time of the motor unit is less than the time threshold, the motor unit does not reach a stable state currently, and in order to ensure the accuracy of the first matching degree, the system needs to suspend the next operation. If the running time of the motor unit is not less than the time threshold, the motor unit is indicated to reach the stable state currently, and the system can carry out the next operation. Therefore, the system outputs a command for judging whether the current working state of the air duct machine is a cooling state or not, so that the next operation can be carried out according to the command.
Further, the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold includes:
s503, judging whether the current first matching degree is larger than a matching threshold value;
s504, if the current first matching degree is larger than a matching threshold value, stopping running the motor unit, and calculating according to the current rotating speed of the motor unit and a preset proportion to obtain an initial rotating speed;
s505, operating the motor unit again, and recalculating a second matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit after the rotating speed of the motor unit reaches the initial rotating speed;
s506, acquiring a corresponding second rotating speed rate according to the second matching degree;
and S507, reducing the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
In this embodiment, when the rated static pressure of the motor unit is seriously mismatched with the length of the external air pipe of the air pipe machine, the water blowing phenomenon is very obvious, and a user may be subjected to a bad use experience (for example, a large amount of condensed water is blown out and falls on the ground or the user). In order to improve the use experience of the user, after the first matching degree is obtained through calculation, the system compares the first matching degree with a matching threshold value which is input in advance, and judges the size relation between the first matching degree and the matching threshold value. The matching threshold value is obtained by designer experiments, and when the matching degree between the rated static pressure of the current motor unit and the length of the external air pipe of the air pipe machine is larger than the matching threshold value, the water blowing phenomenon is serious, and the use experience of a user can be influenced by a large probability. And if the first matching degree is not greater than the matching threshold, the system obtains the rotating speed rate corresponding to the first matching degree according to the method for adjusting the rotating speed of the motor unit, and reduces the rotating speed of the motor unit according to the rotating speed rate. If the first matching degree is larger than the matching degree, the system stops operating the motor unit firstly, and calculates the initial rotating speed according to the current rotating speed of the motor unit before stopping and the preset proportion. The preset proportion is set by a designer, for example, the current rotating speed is 1000r/min, and the initial rotating speed is 800r/min if the preset proportion is 0.8. And then, the system starts the motor unit again, and after the rotating speed of the motor unit reaches the initial rotating speed, the second matching degree of the rated static pressure of the motor unit and the length of the external air pipe at the moment is obtained through recalculation according to the method. And the system screens the second rotating speed rate corresponding to the second matching degree according to the matching degree and rotating speed rate mapping relation table. And the system reduces the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
The method for preventing the indoor unit of the high static pressure air duct machine from blowing water provided by the embodiment includes that the indoor unit includes a motor unit, and the system determines whether the current working state of the air duct machine is a cooling state. And if the current working state of the air duct machine is a refrigerating state, acquiring the working current and/or the working power of the motor unit. The system judges whether the working current is larger than a first current threshold or whether the working power is larger than a first power threshold. And if the working current is greater than the first current threshold value or the working power is greater than the first power threshold value, calling a second current threshold value, and calculating to obtain a first matching degree of the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value and the second current threshold value or according to the working power, the first power threshold value and the second power threshold value. And finally, the system correspondingly adjusts the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than a first current threshold value or the working power of the motor unit is not larger than a first power threshold value. In this application, the system is behind the rotational speed adjustment with motor unit, and motor unit's rated static pressure can with external tuber pipe length phase-match, and the indoor set can not blow off the comdenstion water outward (avoided blowing promptly) the water collector because of the wind speed is too big, effectively improves tuber pipe machine's comfort level and reliability to and user's use is experienced.
Referring to fig. 2, an embodiment of the present application further provides an apparatus for preventing an indoor unit of a high static pressure air duct machine from blowing water, where the indoor unit includes a motor unit, and the apparatus includes:
the first judgment module 1 is used for judging whether the current working state of the air duct machine is a refrigeration state or not;
the obtaining module 2 is configured to obtain a working current and/or a working power of the motor unit if the current working state of the air duct machine is a refrigeration state;
the second judging module 3 is configured to judge whether the working current is greater than a first current threshold, or judge whether the working power is greater than a first power threshold;
the calculation module 4 is configured to, if the working current is greater than a first current threshold, or the working power is greater than a first power threshold, call a second current threshold, and calculate a first matching degree between a rated static pressure of the motor unit and a length of an external air duct of the indoor unit according to the working current, the first current threshold, the second current threshold, or the working power, the first power threshold, and the second power threshold;
and the adjusting module 5 is used for correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold.
In this embodiment, the duct machine is a high static pressure duct machine (the static pressure value is above 50 Pa), and the duct machine includes an indoor unit and a motor unit, where the motor unit is a direct current motor and is configured to provide power for a fan of the indoor unit, so that the fan rotates to supply air. The system firstly judges whether the current working state of the air pipe machine is a heating state or a refrigerating state, if the current working state is the heating state, the indoor machine can not generate condensed water, so that the water blowing phenomenon can not occur even if the rated static pressure of the motor unit is not matched with the length of the external air pipe, and the system does not need to carry out the next detection action. If the current working state of the air duct machine is a refrigerating state, condensed water can be generated indoors, and the water blowing phenomenon can occur when the rated static pressure of the motor unit is not matched with the length of the external air duct. The system obtains the current working current and/or working power of the motor unit, wherein the working current is the current value when the motor unit normally operates at present, and the working power is the power value when the motor unit normally operates at present. The system calls a first current threshold value recorded in advance to be compared with the working current in a numerical value mode, or calls a first power threshold value recorded in advance to be compared with the working power in a numerical value mode. The first current threshold is a current value measured by the motor unit under a rated static pressure, and the first power threshold is a power value measured by the motor unit under the rated static pressure, and is measured by a designer through an experiment. If the current working current of the motor unit is not greater than the first current threshold value or the working power is not greater than the first power threshold value, it is indicated that the actual static pressure value of an external air pipe pipeline of the motor unit is greater than the nominal rated static pressure value of the motor unit, at the moment, the actual air volume of the motor unit is smaller than or equal to the rated air volume, and the phenomenon that condensed water is blown out of the water receiving tray due to overlarge air speed cannot occur. If the current working current of the motor unit is greater than the first current threshold value or the working power is greater than the first power, it is indicated that the actual static pressure value of the external air pipe pipeline of the motor unit is less than the nominal rated static pressure value of the motor unit, at the moment, the actual air volume of the motor unit is greater than the rated air volume, and the condensate water may be blown out of the water receiving tray due to the overlarge air speed, at the moment, the system needs to correspondingly adjust the rotating speed of the motor unit according to the preset rule so as to reduce the air speed. Specifically, the system firstly calls a second current threshold and/or a second power threshold which are recorded in advance, wherein the second current threshold is a current value measured by the motor unit under the condition that the static pressure is 0Pa, the second power threshold is a power value measured by the motor unit under the condition that the static pressure is 0Pa, and the second power threshold is measured by a designer through experiments. The system can calculate by taking the current value as a calculation reference, and subtract the first current threshold value from the working current to obtain a first difference value between the working current and the first current threshold value; and subtracting the first current threshold from the second current threshold to obtain a second difference value between the first current threshold and the second current threshold. Or the system calculates by taking the power value as a calculation reference, and subtracts the first power threshold from the working power to obtain a first difference between the working power and the first power threshold; and subtracting the first power threshold from the second power threshold to obtain a second difference value between the first power threshold and the second power threshold. And then, the system divides the first difference value by the second difference value to obtain a ratio between the first difference value and the second difference value, and the ratio represents the first matching degree of the rated static pressure of the current motor unit and the length of the external air pipe. The database in the system stores a pre-constructed mapping relation table of matching degree and rotating speed rate, and comprises a plurality of groups of matching degrees and rotating speeds which correspond to each other. And the system screens and obtains a first rotating speed rate corresponding to the first matching degree according to the matching degree and rotating speed rate mapping relation table. And then, reducing the rotating speed of the motor unit according to the first rotating speed rate, and monitoring the working current and/or the working power of the motor unit in real time until the rotating speed of the motor unit is reduced to the state that the working current is not greater than a first current threshold value, or the working power of the motor unit is not greater than a first power threshold value. At the moment, the actual static pressure value of the external air pipe pipeline of the motor unit is larger than the nominal rated static pressure value of the motor unit, the actual air volume of the motor unit is smaller than or equal to the rated air volume, and the condensate water cannot be blown out of the water receiving disc due to overlarge air speed, so that the water blowing of the indoor unit is avoided.
Further, the calculating module 4 includes:
a first calculation unit configured to calculate a first difference between the operating current and the first current threshold, and calculate a second difference between the second current threshold and the first current threshold;
and the second calculating unit is used for calculating the ratio of the first difference to the second difference to obtain the first matching degree.
In this embodiment, the system substitutes the working current and the first current threshold into a first formula, and calculates a first difference between the working current and the first current threshold, where the first formula is: i is1-I2＝Z1，I1For operating current, I2Is a first current threshold value, Z1Is the first difference. And substituting the second current threshold and the first current threshold into a second formula by the system, and calculating to obtain a second difference value between the second current threshold and the first current threshold, wherein the second formula is I0-I2＝Z2，I0Is a second current threshold value, I2Is a first current threshold value, Z2Is the second difference. The system substitutes the first difference value and the second difference value into a third formula respectively, and the ratio between the first difference value and the second difference value is obtained through calculation, wherein the third formula is Z1/Z2K is a ratio, namely, a first matching degree of the rated static pressure of the current motor unit and the length of the external air pipe is represented, and the second matching degree is representedThe larger the value of the matching degree is, the more serious the mismatching condition of the rated static pressure of the current motor unit and the length of the external air pipe is.
Further, the adjusting module 5 includes:
the screening unit is used for screening to obtain a first rotating speed corresponding to the first matching degree according to a pre-constructed matching degree and rotating speed mapping relation table;
and the first adjusting unit is used for reducing the rotating speed of the motor unit according to the first rotating speed until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
In this embodiment, a mapping table of matching degrees and rotational speed rates is pre-constructed in the internal database of the system, and includes a plurality of groups of matching degrees and rotational speed rates corresponding to each other. Specifically, the matching degree is: 0-0.2, corresponding to a rotational speed rate of S1(ii) a The matching degree is as follows: 0.2-0.5, corresponding to a rotational speed rate of S2(ii) a The matching degree is as follows: 0.5-0.8, corresponding to a rotational speed rate of S3(ii) a The matching degree is as follows: 0.8-1.0, corresponding to a rotational speed rate of S4. Wherein S is1<S2<S3<S4The larger the value of the matching degree is, the more serious the mismatching condition of the rated static pressure of the current motor unit and the length of the external air pipe is, so that the motor unit needs to be reduced at a faster rotating speed rate on the premise of not influencing the comfort of a user. And the system screens and obtains a first rotating speed rate corresponding to the first matching degree according to the matching degree and rotating speed rate mapping relation table. And then, the system reduces the rotating speed of the motor unit according to the first rotating speed rate, and monitors the working current and/or the working power of the motor unit in real time until the rotating speed of the motor unit is reduced to the state that the working current is not greater than a first current threshold value, or the working power of the motor unit is not greater than a first power threshold value. At the moment, the actual static pressure value of the external air pipe pipeline of the motor unit is larger than the nominal rated static pressure value of the motor unit, and the actual air volume of the motor unit is smaller than or equal to the rated air volume, so that condensed water cannot be blown out of the water receiving tray due to overlarge air speedThereby avoiding the indoor unit from blowing water.
Further, the apparatus further includes:
and the prompt module 6 is configured to output prompt information if the working current is greater than a first current threshold value or the working power is greater than a first power threshold value, where the prompt information is used to prompt an operator that the air duct machine is currently in an adjustment state.
In this embodiment, when the system recognizes that the working current of the motor unit is greater than the first current threshold, or the working power is greater than the first power threshold, it indicates that the actual static pressure value of the external air pipe of the motor unit is less than the nominal rated static pressure value of the motor unit, and at this time, the actual air volume of the motor unit is greater than the nominal air volume, which may cause the condensed water to be blown out of the water pan due to an excessively large air speed. Therefore, the system then needs to adjust the rotation speed of the motor unit accordingly (the adjustment process is as described above). At this time, the system firstly outputs prompt information, the prompt information is used for prompting an operator (such as a user or an installer of the air duct machine) that the air duct machine is currently in an adjusting state, the operator does not need to perform other operation actions (such as manually adjusting the rotating speed of the motor unit) on the air duct machine, and interference on automatic adjustment of the system is avoided. The prompt message may be a text message (for example, a prompt text is output through a display screen), or may be a sound message (for example, a prompt sound similar to "dripping" is emitted), so that the operator can know the message in time.
Further, the apparatus further includes:
and the setting module 7 is used for taking the rotating speed of the motor unit after the adjustment as the default rotating speed of the motor unit.
In this embodiment, after the system adjusts the rotation speed of the motor unit according to the first matching degree (that is, the adjustment is performed until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold), the system takes the current rotation speed as the default rotation speed of the motor unit. After the air duct machine is started for the next time, the rotating speed of the motor unit during normal working is based on the default rotating speed and does not work according to the rated power any more, so that the calculation of the first matching degree and the adjustment of the rotating speed of the motor unit are not needed again, and the comfort and the reliability of the air duct machine are effectively improved.
Further, the apparatus further includes:
the third judging module 8 is used for judging whether the running time of the motor unit is not less than a time threshold value;
and the output module 9 is configured to output a command for judging whether the current working state of the air duct machine is the cooling state or not if the running time of the motor unit is not less than the time threshold.
In this embodiment, after the air duct machine is initially installed and started, the motor unit needs to operate for a period of time before reaching a stable state, and the accuracy of the first matching degree calculated by the system is higher at this time. Therefore, after the air duct machine is started, the system needs to acquire the running time of the motor unit, compare the running time with the time threshold value, and judge whether the current running time of the motor unit is not less than the time threshold value. The time threshold is the time required by the motor unit from the beginning to the stable operation, and is measured by the experiment of a designer. If the running time of the motor unit is less than the time threshold, the motor unit does not reach a stable state currently, and in order to ensure the accuracy of the first matching degree, the system needs to suspend the next operation. If the running time of the motor unit is not less than the time threshold, the motor unit is indicated to reach the stable state currently, and the system can carry out the next operation. Therefore, the system outputs a command for judging whether the current working state of the air duct machine is a cooling state or not, so that the next operation can be carried out according to the command.
Further, the adjusting module 4 includes:
the judging unit is used for judging whether the current first matching degree is larger than a matching threshold value;
the stopping unit is used for stopping running the motor unit if the current first matching degree is larger than a matching threshold value, and calculating according to the current rotating speed of the motor unit and a preset proportion to obtain an initial rotating speed;
the restarting unit is used for operating the motor unit again, and recalculating a second matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit after the rotating speed of the motor unit reaches the initial rotating speed;
the acquisition unit is used for acquiring a corresponding second rotating speed rate according to the second matching degree;
and the second adjusting unit is used for reducing the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
In this embodiment, when the rated static pressure of the motor unit is seriously mismatched with the length of the external air pipe of the air pipe machine, the water blowing phenomenon is very obvious, and a user may be subjected to a bad use experience (for example, a large amount of condensed water is blown out and falls on the ground or the user). In order to improve the use experience of the user, after the first matching degree is obtained through calculation, the system compares the first matching degree with a matching threshold value which is input in advance, and judges the size relation between the first matching degree and the matching threshold value. The matching threshold value is obtained by designer experiments, and when the matching degree between the rated static pressure of the current motor unit and the length of the external air pipe of the air pipe machine is larger than the matching threshold value, the water blowing phenomenon is serious, and the use experience of a user can be influenced by a large probability. And if the first matching degree is not greater than the matching threshold, the system obtains the rotating speed rate corresponding to the first matching degree according to the method for adjusting the rotating speed of the motor unit, and reduces the rotating speed of the motor unit according to the rotating speed rate. If the first matching degree is larger than the matching degree, the system stops operating the motor unit firstly, and calculates the initial rotating speed according to the current rotating speed of the motor unit before stopping and the preset proportion. The preset proportion is set by a designer, for example, the current rotating speed is 1000r/min, and the initial rotating speed is 800r/min if the preset proportion is 0.8. And then, the system starts the motor unit again, and after the rotating speed of the motor unit reaches the initial rotating speed, the second matching degree of the rated static pressure of the motor unit and the length of the external air pipe at the moment is obtained through recalculation according to the method. And the system screens the second rotating speed rate corresponding to the second matching degree according to the matching degree and rotating speed rate mapping relation table. And the system reduces the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
The device for preventing the indoor unit of the high static pressure air duct machine from blowing water provided by the embodiment comprises a motor unit, and the system judges whether the current working state of the air duct machine is a refrigeration state. And if the current working state of the air duct machine is a refrigerating state, acquiring the working current and/or the working power of the motor unit. The system judges whether the working current is larger than a first current threshold or whether the working power is larger than a first power threshold. And if the working current is greater than the first current threshold value or the working power is greater than the first power threshold value, calling a second current threshold value, and calculating to obtain a first matching degree of the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value and the second current threshold value or according to the working power, the first power threshold value and the second power threshold value. And finally, the system correspondingly adjusts the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than a first current threshold value or the working power of the motor unit is not larger than a first power threshold value. In this application, the system is behind the rotational speed adjustment with motor unit, and motor unit's rated static pressure can with external tuber pipe length phase-match, and the indoor set can not blow off the comdenstion water outward (avoided blowing promptly) the water collector because of the wind speed is too big, effectively improves tuber pipe machine's comfort level and reliability to and user's use is experienced.
Referring to fig. 3, a computer device, which may be a server and whose internal structure may be as shown in fig. 3, is also provided in the embodiment of the present application. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the computer designed processor is used to provide computational and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing data such as the first current threshold value. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of preventing a water blow in an indoor unit of a high static pressure air duct machine, wherein the indoor unit includes a motor unit.
The processor executes the steps of the method for preventing the indoor unit of the high static pressure air duct machine from blowing water:
s1, judging whether the current working state of the air duct machine is a refrigeration state or not;
s2, if the current working state of the air duct machine is a refrigeration state, obtaining the working current and/or working power of the motor unit;
s3, judging whether the working current is larger than a first current threshold or not, or judging whether the working power is larger than a first power threshold or not;
s4, if the working current is larger than a first current threshold value, or the working power is larger than a first power threshold value, calling a second current threshold value and/or a second power threshold value, and calculating to obtain a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value, the second current threshold value, or the working power, the first power threshold value and the second power threshold value;
and S5, correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
Further, the step of calculating a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold and the second current threshold includes:
s401, calculating a first difference value between the working current and the first current threshold value, and calculating a second difference value between the second current threshold value and the first current threshold value;
s402, calculating the ratio of the first difference value to the second difference value to obtain the first matching degree.
Further, the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold includes:
s501, screening to obtain a first rotating speed rate corresponding to the first matching degree according to a pre-constructed matching degree and rotating speed rate mapping relation table;
s502, reducing the rotating speed of the motor unit according to the first rotating speed until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
Further, after the step of determining whether the working current is greater than a first current threshold or determining whether the working power is greater than a first power threshold, the method includes:
and S6, if the working current is larger than a first current threshold value or the working power is larger than a first power threshold value, outputting prompt information, wherein the prompt information is used for prompting an operator that the air duct machine is currently in an adjustment state.
Further, after the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold, the method includes:
and S7, taking the adjusted rotating speed of the motor unit as the default rotating speed of the motor unit.
Further, before the step of determining whether the current working state of the air duct machine is a cooling state, the method includes:
s8, judging whether the running time of the motor unit is not less than a time threshold value;
and S9, if the running time of the motor unit is not less than the time threshold, outputting a command for judging whether the current working state of the air duct machine is a refrigerating state.
Further, the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold includes:
s503, judging whether the current first matching degree is larger than a matching threshold value;
s504, if the current first matching degree is larger than a matching threshold value, stopping running the motor unit, and calculating according to the current rotating speed of the motor unit and a preset proportion to obtain an initial rotating speed;
s505, operating the motor unit again, and recalculating a second matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit after the rotating speed of the motor unit reaches the initial rotating speed;
s506, acquiring a corresponding second rotating speed rate according to the second matching degree;
and S507, reducing the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for preventing an indoor unit of a high-static-pressure air duct machine from blowing water, where the indoor unit includes a motor unit, and the method specifically includes:
s1, judging whether the current working state of the air duct machine is a refrigeration state or not;
s2, if the current working state of the air duct machine is a refrigeration state, obtaining the working current and/or working power of the motor unit;
s3, judging whether the working current is larger than a first current threshold or not, or judging whether the working power is larger than a first power threshold or not;
s4, if the working current is larger than a first current threshold value, or the working power is larger than a first power threshold value, calling a second current threshold value and/or a second power threshold value, and calculating to obtain a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value, the second current threshold value, or the working power, the first power threshold value and the second power threshold value;
and S5, correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
Further, the step of calculating a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold and the second current threshold includes:
s401, calculating a first difference value between the working current and the first current threshold value, and calculating a second difference value between the second current threshold value and the first current threshold value;
s402, calculating the ratio of the first difference value to the second difference value to obtain the first matching degree.
Further, the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold includes:
s501, screening to obtain a first rotating speed rate corresponding to the first matching degree according to a pre-constructed matching degree and rotating speed rate mapping relation table;
s502, reducing the rotating speed of the motor unit according to the first rotating speed until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
Further, after the step of determining whether the working current is greater than a first current threshold or determining whether the working power is greater than a first power threshold, the method includes:
and S6, if the working current is larger than a first current threshold value or the working power is larger than a first power threshold value, outputting prompt information, wherein the prompt information is used for prompting an operator that the air duct machine is currently in an adjustment state.
Further, after the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold, the method includes:
and S7, taking the adjusted rotating speed of the motor unit as the default rotating speed of the motor unit.
Further, before the step of determining whether the current working state of the air duct machine is a cooling state, the method includes:
s8, judging whether the running time of the motor unit is not less than a time threshold value;
and S9, if the running time of the motor unit is not less than the time threshold, outputting a command for judging whether the current working state of the air duct machine is a refrigerating state.
Further, the step of correspondingly adjusting the rotation speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold, or the working power of the motor unit is not greater than the first power threshold includes:
s503, judging whether the current first matching degree is larger than a matching threshold value;
s504, if the current first matching degree is larger than a matching threshold value, stopping running the motor unit, and calculating according to the current rotating speed of the motor unit and a preset proportion to obtain an initial rotating speed;
s505, operating the motor unit again, and recalculating a second matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit after the rotating speed of the motor unit reaches the initial rotating speed;
s506, acquiring a corresponding second rotating speed rate according to the second matching degree;
and S507, reducing the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by hardware associated with instructions of a computer program, which may be stored on a non-volatile computer-readable storage medium, and when executed, may include processes of the above embodiments of the methods. Any reference to memory, storage, database, or other medium provided herein and used in the examples may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double-rate SDRAM (SSRSDRAM), Enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.
The above description is only for the preferred embodiment of the present application and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. A method of preventing water from blowing in an indoor unit of a high static pressure duct machine, the indoor unit including a motor unit, the method comprising:
judging whether the current working state of the air pipe machine is a refrigeration state or not;
if the current working state of the air duct machine is a refrigerating state, acquiring the working current and/or working power of the motor unit;
judging whether the working current is greater than a first current threshold or not, or judging whether the working power is greater than a first power threshold or not;
if the working current is greater than a first current threshold value, or the working power is greater than a first power threshold value, calling a second current threshold value and/or a second power threshold value, and calculating to obtain a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value, the second current threshold value, or the working power, the first power threshold value and the second power threshold value;
and correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
2. The method for preventing the indoor unit of the high static pressure air duct machine from blowing water according to claim 1, wherein the step of calculating the first matching degree of the rated static pressure of the motor unit and the length of the external air duct of the indoor unit according to the working current, the first current threshold and the second current threshold comprises the following steps:
calculating a first difference between the operating current and the first current threshold, and calculating a second difference between the second current threshold and the first current threshold;
and calculating the ratio of the first difference to the second difference to obtain the first matching degree.
3. The method for preventing the indoor unit of the high-static-pressure air duct machine from blowing water according to claim 1, wherein the step of correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value comprises the following steps of:
screening to obtain a first rotating speed rate corresponding to the first matching degree according to a pre-constructed mapping relation table of the matching degree and the rotating speed rate;
and reducing the rotating speed of the motor unit according to the first rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
4. The method for preventing the indoor unit of the high static pressure air duct machine from blowing water as claimed in claim 1, wherein the step of judging whether the working current is larger than a first current threshold value or whether the working power is larger than a first power threshold value is followed by the steps of:
and if the working current is greater than a first current threshold value or the working power is greater than a first power threshold value, outputting prompt information, wherein the prompt information is used for prompting an operator that the air duct machine is currently in an adjusting state.
5. The method for preventing the indoor unit of the high-static-pressure air duct machine from blowing water according to claim 1, wherein the step of correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value is followed by the steps of:
and taking the adjusted rotating speed of the motor unit as the default rotating speed of the motor unit.
6. The method for preventing the indoor unit of the high-static-pressure air duct machine from blowing water according to claim 1, wherein the step of judging whether the current working state of the air duct machine is a cooling state is preceded by the step of:
judging whether the running time of the motor unit is not less than a time threshold value or not;
and if the running time of the motor unit is not less than the time threshold, outputting a command for judging whether the current working state of the air duct machine is a refrigerating state.
7. The method for preventing the indoor unit of the high-static-pressure air duct machine from blowing water according to claim 1, wherein the step of correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value comprises the following steps of:
judging whether the current first matching degree is larger than a matching threshold value;
if the current first matching degree is larger than the matching threshold, stopping running the motor unit, and calculating according to the current rotating speed of the motor unit and a preset proportion to obtain an initial rotating speed;
the motor unit is operated again, and after the rotating speed of the motor unit reaches the initial rotating speed, the second matching degree of the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit is recalculated;
acquiring a corresponding second rotating speed rate according to the second matching degree;
and reducing the rotating speed of the motor unit according to the second rotating speed rate until the working current of the motor unit is not greater than the first current threshold value or the working power of the motor unit is not greater than the first power threshold value.
8. A device for preventing an indoor unit of a high static pressure air duct machine from blowing water, characterized in that the indoor unit comprises a motor unit, and the device comprises:
the first judgment module is used for judging whether the current working state of the air duct machine is a refrigeration state or not;
the acquisition module is used for acquiring the working current and/or working power of the motor unit if the current working state of the air duct machine is a refrigeration state;
the second judgment module is used for judging whether the working current is greater than a first current threshold or judging whether the working power is greater than a first power threshold;
the calculation module is used for calling a second current threshold value if the working current is greater than a first current threshold value or the working power is greater than a first power threshold value, and calculating a first matching degree between the rated static pressure of the motor unit and the length of an external air pipe of the indoor unit according to the working current, the first current threshold value and the second current threshold value or according to the working power, the first power threshold value and the second power threshold value;
and the adjusting module is used for correspondingly adjusting the rotating speed of the motor unit according to the first matching degree until the working current of the motor unit is not larger than the first current threshold value or the working power of the motor unit is not larger than the first power threshold value.
9. A computer device comprising a memory and a processor, the memory having stored therein a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
CN202010725698.9A 2020-07-24 2020-07-24 Method and device for preventing indoor unit of high-static-pressure air duct machine from blowing water and related equipment Pending CN111998494A (en)

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Application publication date: 20201127