WO2018201852A1 - Air conditioner outdoor fan control device and method - Google Patents

Air conditioner outdoor fan control device and method Download PDF

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Publication number
WO2018201852A1
WO2018201852A1 PCT/CN2018/082318 CN2018082318W WO2018201852A1 WO 2018201852 A1 WO2018201852 A1 WO 2018201852A1 CN 2018082318 W CN2018082318 W CN 2018082318W WO 2018201852 A1 WO2018201852 A1 WO 2018201852A1
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WO
WIPO (PCT)
Prior art keywords
outdoor
temperature
condenser coil
outdoor fan
detecting unit
Prior art date
Application number
PCT/CN2018/082318
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French (fr)
Chinese (zh)
Inventor
杨公增
顾超
国德防
Original Assignee
青岛海尔空调电子有限公司
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Application filed by 青岛海尔空调电子有限公司 filed Critical 青岛海尔空调电子有限公司
Priority to US16/604,940 priority Critical patent/US20200056798A1/en
Publication of WO2018201852A1 publication Critical patent/WO2018201852A1/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
    • F24F11/70—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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/16—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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

Definitions

  • the invention relates to the technical field of air conditioners, and in particular to a control device and method for an outdoor fan of an air conditioner.
  • China Patent Application No. 201310100919.3, entitled “Control Circuit, Control Method and Air Conditioner for Air Conditioning Outdoor Fan” discloses a control method for an outdoor fan, in which a condenser coil temperature detecting unit is used in an outdoor fan. The outdoor condenser coil temperature is obtained during operation to compare with the preset reference temperature to determine the wind speed of the outdoor fan.
  • the data collection point of the scheme is single, and the control mode is single.
  • the only temperature detecting unit fails, there is a hidden danger that the air conditioning operation cannot be controlled.
  • the embodiment of the invention provides a control device and method for an outdoor fan of an air conditioner, which aims to solve the problem that the existing data collection point is single and the control mode is single. When the only temperature detecting unit fails, the air conditioning operation cannot be controlled. problem.
  • This generalization is not a general comment, nor is it intended to identify key/critical constituent elements or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the following detailed description.
  • a control device for an outdoor fan of an air conditioner includes: an outdoor ambient temperature detecting unit for detecting an outdoor ambient temperature; a first temperature detecting unit and a second temperature detecting unit, configured to: Detecting an outdoor condenser coil temperature; calculating a unit for calculating a target speed of the outdoor fan according to the outdoor ambient temperature and the outdoor condenser coil temperature; and a control unit configured to control the outdoor fan to the target speed run.
  • the calculating unit calculates a target rotating speed of the outdoor fan according to the following formula:
  • n is the target speed of the outdoor fan
  • N is the rated maximum speed when the outdoor fan is running at full speed
  • Tp0 is the outdoor condenser coil temperature preset by the air conditioner
  • Ta0 is the preset outdoor ambient temperature of the air conditioner
  • Tp is the outdoor condenser Coil temperature
  • Ta is the outdoor ambient temperature.
  • a higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit is an outdoor condenser coil temperature.
  • control unit is further configured to control the first fan to run at a first speed within a first set time after the outdoor fan is started.
  • a method for controlling an outdoor fan of an air conditioner includes: controlling the outdoor fan to be in a second set time when detecting that the outdoor ambient temperature is less than the first set temperature Running at a target speed of the outdoor fan determined according to the outdoor ambient temperature, the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit; when the outdoor condenser coil temperature and the pre-detection are detected When the absolute value of the difference of the temperature of the outdoor condenser coil is greater than the second set temperature, controlling the outdoor fan to detect the outdoor ambient temperature and the first temperature according to the latest reading in the second set time
  • the unit and the second temperature detecting unit detect the target fan speed of the outdoor fan determined by the outdoor condenser coil temperature.
  • the target speed operation includes: calculating the target speed of the outdoor fan according to the following formula:
  • n is the target temperature of the outdoor fan
  • N is the rated maximum speed when the outdoor fan is running at full speed
  • Tp0 is the outdoor condenser coil temperature preset by the air conditioner
  • Ta0 is the preset outdoor ambient temperature of the air conditioner
  • Tp is the outdoor condenser The coil temperature
  • Ta is an outdoor ambient temperature; controlling the outdoor fan to operate at the target rotational speed for a second set time.
  • the outdoor condenser coil temperature is the higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit.
  • the method further includes: reading the outdoor ambient temperature and the outdoor condenser coil temperature once every second set time, reading six sets and ending; determining the outdoor ambient temperature and The average of the outdoor condenser coil temperatures.
  • the method further includes: controlling to operate at the first speed within the first set time after the outdoor fan is started.
  • the target outdoor speed of the outdoor fan is determined by the detected outdoor ambient temperature and the outdoor condenser coil temperature, and the multi-control of the outdoor fan of the air conditioner is realized.
  • Two temperature detecting units are provided in the outdoor condenser, and the temperature of the outdoor condenser coil is increased. The sampling point avoids the hidden danger of the single detection unit being damaged and the air conditioning operation cannot be controlled.
  • FIG. 1 is a block diagram of a control device for an outdoor fan of an air conditioner, according to an exemplary embodiment
  • FIG. 2 is a schematic flow chart of a method for controlling an outdoor fan of an air conditioner according to an exemplary embodiment
  • FIG. 3 is a schematic flow chart of a method for controlling an outdoor fan of an air conditioner according to an exemplary embodiment
  • FIG. 4 is a flow chart showing determining a target rotational speed of an outdoor fan according to an exemplary embodiment.
  • relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not require or imply any actual relationship between the entities or operations or order.
  • the terms “comprises” or “comprising” or “comprising” or any other variations are intended to encompass a non-exclusive inclusion, such that a process, method, or device that includes a plurality of elements includes not only those elements but also other items not specifically listed. Elements, or elements that are inherent to such a process, method, or device. An element that is defined by the phrase “comprising a " does not exclude the presence of additional equivalent elements in the process, method, or device that comprises the element.
  • FIG. 1 is a schematic structural diagram of a control device for an outdoor fan of an air conditioner according to an embodiment of the present invention.
  • the utility model comprises an outdoor environment temperature detecting unit 101, a first temperature detecting unit 102, a second temperature detecting unit 103, a calculating unit 104 and a control unit 105.
  • the outdoor ambient temperature detecting unit 101 is for detecting an outdoor ambient temperature.
  • the first temperature detecting unit 102 and the second temperature detecting unit 103 are disposed at different positions on the surface of the outdoor condenser for detecting the temperature of the outdoor condenser.
  • the sampling point of the outdoor condenser coil temperature is increased, which avoids the failure of the single temperature detecting unit, and the air conditioning operation cannot be controlled.
  • the first temperature detecting unit 102 and the second temperature detecting unit 103 are respectively disposed at the upper and lower portions of the condenser, and in some embodiments, the first temperature detecting unit 102 and the second temperature detecting unit 103 are respectively disposed at The left and right sides of the condenser, in other embodiments, the first temperature detecting unit 102 and the second temperature detecting unit 103 are disposed on the upper and left sides, respectively.
  • the calculating unit 104 is configured to calculate the target rotational speed of the outdoor fan according to the outdoor ambient temperature detected by the outdoor temperature detecting unit 101 and the outdoor condenser coil temperature detected by the first temperature detecting unit 102 and the second temperature detecting unit 103.
  • the control unit 105 is configured to control the outdoor fan to operate at the target speed of the outdoor fan calculated by the calculation unit 104.
  • the device provided in this embodiment determines the target rotational speed of the outdoor fan by detecting the outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing the multi-function control of the outdoor fan of the air conditioner, and providing two temperature detecting units in the outdoor condenser, increasing The sampling point of the outdoor condenser coil temperature avoids the damage of the single detection unit and the hidden danger that the air conditioner operation cannot be controlled.
  • control device for the outdoor fan of the air conditioner includes an outdoor ambient temperature detecting unit 101, a first temperature detecting unit 102, a second temperature detecting unit 103, a calculating unit 104, and a control unit 105.
  • the outdoor ambient temperature detecting unit 101 is for detecting an outdoor ambient temperature.
  • the first temperature detecting unit 102 and the second temperature detecting unit 103 are disposed at different positions on the surface of the outdoor condenser for detecting the temperature of the outdoor condenser.
  • the calculating unit 104 is configured to calculate the target rotational speed of the outdoor fan according to the following formula:
  • n is the target speed of the outdoor fan
  • N is the rated maximum speed when the outdoor fan is running at full speed
  • Tp0 is the outdoor condenser coil temperature preset by the air conditioner
  • Ta0 is the preset outdoor ambient temperature of the air conditioner
  • Tp is the outdoor condenser Coil temperature
  • Ta is the outdoor ambient temperature
  • 273.5 is the lowest temperature of thermodynamics
  • the unit of thermodynamic temperature scale is Kelvin.
  • the outdoor condenser coil temperature is the higher one of the temperatures of the outdoor condensers detected by the first temperature detecting unit 102 and the second temperature detecting unit 103.
  • the control unit 105 is configured to control the outdoor fan to operate at the target speed of the outdoor fan calculated by the calculation unit 104.
  • the control unit 105 is further configured to control the first fan to operate at the first speed within the first set time after the outdoor fan is started.
  • the first set time ranges from 1 to 5 minutes. In this embodiment, the first set time is 2 minutes.
  • the first rotational speed is the rated maximum rotational speed of the outdoor fan at full speed operation, ensuring that the outdoor fan runs smoothly at the start-up, and the outdoor fan current excessively damages the motor when the low-speed start is started.
  • the device provided in this embodiment determines the target rotational speed of the outdoor fan by detecting the outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing the multi-function control of the outdoor fan of the air conditioner, and providing two temperature detecting units in the outdoor condenser, increasing The sampling point of the outdoor condenser coil temperature avoids the damage of the single detection unit and the hidden danger that the air conditioner operation cannot be controlled.
  • calculating the target speed of the outdoor fan based on the outdoor ambient temperature and the outdoor condenser coil temperature includes the following steps. First, the outdoor ambient temperature and the outdoor condenser coil temperature should be collected, and the outdoor ambient temperature and the outdoor condenser coil temperature should be read once every third set time, and after reading six groups, the process ends.
  • the third set time is 30 seconds, and the temperature is read once every 30 seconds, which increases the sample quantity and improves the efficiency of the outdoor fan speed control.
  • the outdoor ambient temperature is detected by the outdoor ambient temperature detecting unit 101, and the outdoor condenser coil temperature is detected by the first temperature detecting unit 102 and the second temperature detecting unit 103.
  • the higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit 102 and the second temperature detecting unit 103 in each of the six sets of data is counted as the outdoor condenser coil temperature.
  • the outdoor ambient temperature and the outdoor condenser coil temperature are collected, the average values of the outdoor ambient temperature and the outdoor condenser coil temperature are obtained, and the outdoor formula is calculated according to the average value of the outdoor ambient temperature and the outdoor condenser coil temperature.
  • the target speed of the fan is the target speed of the fan.
  • n is the target temperature of the outdoor fan
  • N is the rated maximum speed when the outdoor fan is running at full speed
  • Tp0 is the outdoor condenser coil temperature preset by the air conditioner
  • Ta0 is the preset outdoor ambient temperature of the air conditioner
  • Tp is the outdoor condenser
  • Ta is the average value of the outdoor ambient temperature
  • 273.5 is the lowest temperature of thermodynamics
  • the unit of thermodynamic temperature scale is Kelvin.
  • FIG. 2 is a schematic diagram of a method for controlling an outdoor fan of an air conditioner according to an embodiment of the present invention. Including the following steps.
  • Step S201 when detecting that the outdoor ambient temperature is less than the first set temperature, controlling the outdoor fan to be in the second set time according to the outdoor ambient temperature, the first temperature detecting unit, and the second temperature detecting unit.
  • the detected outdoor condenser coil temperature determines the target speed of the outdoor fan to operate.
  • the calculating unit calculates the outdoor ambient coil temperature according to the outdoor ambient temperature, and calculates the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit
  • the target speed of the outdoor fan is determined, and the control unit controls the outdoor fan to operate at the target speed for the second set time.
  • the first set temperature is determined according to an average value of the ambient temperature of the air-conditioning installation environment. In the embodiment, the first set temperature is 35 °C.
  • the second set time ranges from 3 to 10 minutes. In the present embodiment, the second set time is 5 minutes.
  • the outdoor fan runs stably at the currently calculated target temperature. When the outdoor fan runs stably at the current calculated target temperature for a second set time, it is determined whether the speed of the outdoor fan needs to be met. Adjustment, to ensure stable and effective operation of the air conditioner, to avoid frequent adjustment of the outdoor fan.
  • Step S202 when it is detected that the absolute value of the difference between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is greater than the second set temperature, controlling the outdoor fan to be in the second set time
  • the operation is performed at a target rotational speed of the outdoor fan determined according to the outdoor environment temperature read, the first temperature detecting unit, and the outdoor condenser coil temperature detected by the second temperature detecting unit.
  • the air conditioner is pre-configured with an outdoor condenser coil temperature, and the outdoor fan is stably operated at the current calculated target temperature for a second set time, when detecting the outdoor condenser coil temperature and the preset outdoor condenser coil temperature.
  • the outdoor fan operates stably at the currently calculated target temperature, and when the difference between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is detected,
  • the calculation unit calculates and determines the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit according to the outdoor ambient temperature obtained by the outdoor ambient temperature detecting unit in the state.
  • the target speed of the outdoor fan the control unit controls the outdoor fan to operate at the latest calculated target speed within the second set time.
  • the control unit controls the outdoor fan to determine the target speed operation of the outdoor fan through the detected outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing the multiple control of the outdoor fan of the air conditioner, and is provided in the outdoor condenser.
  • Two temperature detecting units increase the sampling point of the outdoor condenser coil temperature, avoiding the hidden danger of the single detecting unit being damaged and the air conditioning running cannot be controlled.
  • FIG. 3 is a schematic diagram of a method for controlling an outdoor fan of an air conditioner according to an embodiment of the present invention. Including the following steps.
  • Step S301 after controlling the outdoor fan to start, operating at the first rotation speed within the first set time.
  • the control unit controls the outdoor fan to operate at the first speed within the first set time after starting.
  • the first set time ranges from 1 to 5 minutes. In this embodiment, the first set time is 2 minutes.
  • the first rotational speed is the rated maximum rotational speed of the outdoor fan at full speed operation, ensuring that the outdoor fan runs smoothly at the start-up, and the outdoor fan current excessively damages the motor when the low-speed start is started.
  • Step S302 when it is detected that the outdoor ambient temperature is less than the first set temperature, controlling the outdoor fan to be in the third set time according to the outdoor ambient temperature, the first temperature detecting unit, and the second temperature detecting unit.
  • the detected outdoor condenser coil temperature determines the target speed of the outdoor fan to operate.
  • the outdoor fan When the outdoor fan reaches the first set time for 2 minutes and the outdoor environment temperature is greater than or equal to the first set temperature, the outdoor fan continues to operate at the current first speed, and when the outdoor ambient temperature is detected to be less than the first
  • the calculation unit determines the outdoor ambient temperature according to the outdoor ambient temperature, and the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit determines the target rotating speed of the outdoor fan, and the calculation formula is as follows:
  • n is the target speed of the outdoor fan
  • N is the rated maximum speed when the outdoor fan is running at full speed
  • Tp0 is the outdoor condenser coil temperature preset by the air conditioner
  • Ta0 is the preset outdoor ambient temperature of the air conditioner
  • Tp is the outdoor condenser Coil temperature
  • Ta is the outdoor ambient temperature
  • 273.5 is the lowest temperature of thermodynamics
  • the unit of thermodynamic temperature scale is Kelvin.
  • the outdoor condenser coil temperature is the higher one of the temperatures of the outdoor condenser detected by the first temperature detecting unit and the second temperature detecting unit.
  • the control unit controls the outdoor fan to operate at the target speed for a second set time.
  • Step S303 when it is detected that the absolute value of the difference between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is greater than the second set temperature, controlling the outdoor fan to be in the second set time
  • the operation is performed at a target rotational speed of the outdoor fan determined according to the outdoor environment temperature read, the first temperature detecting unit, and the outdoor condenser coil temperature detected by the second temperature detecting unit.
  • the outdoor condenser coil temperature is the higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit.
  • the control unit controls the outdoor fan to determine the target speed operation of the outdoor fan through the detected outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing the multiple control of the outdoor fan of the air conditioner, and is provided in the outdoor condenser.
  • Two temperature detecting units increase the sampling point of the outdoor condenser coil temperature, avoiding the hidden danger of the single detecting unit being damaged and the air conditioning running cannot be controlled.
  • the air conditioning outdoor fan control method controls the outdoor fan to detect the outdoor condenser disk according to the outdoor ambient temperature, the first temperature detecting unit, and the second temperature detecting unit in the third set time
  • the target speed operation of the outdoor fan determined by the tube temperature includes the following steps.
  • step S401 the outdoor ambient temperature and the outdoor condenser coil temperature are read once every third set time, and after six sets are read, the process ends.
  • the third set time is 30 seconds, and the temperature is read once every 30 seconds, which increases the sample quantity and improves the efficiency of the outdoor fan speed control. Reading six sets of data, each set of data includes an outdoor ambient temperature detected by the outdoor ambient temperature detecting unit, an outdoor condenser coil temperature detected by the first temperature detecting unit, and a detected by the second temperature detecting unit Outdoor condenser coil temperature.
  • Step S402 taking the higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit as the outdoor condenser coil temperature.
  • each set of data includes two outdoor condenser coil temperatures, and the higher one of the two outdoor condenser coil temperatures is used as the outdoor condenser coil temperature effective value for outdoor fan speed Calculation.
  • step S403 an average value of the outdoor ambient temperature and the outdoor condenser coil temperature is obtained.
  • the average ambient temperature and outdoor condenser coil temperature in the six sets of data were averaged.
  • Step S404 calculating a target rotational speed of the outdoor fan according to an average value of the outdoor ambient temperature and the outdoor condenser coil temperature.
  • the target speed of the outdoor fan is calculated by the following formula based on the average of the outdoor ambient temperature and the outdoor condenser coil temperature.
  • n is the target temperature of the outdoor fan
  • N is the rated maximum speed when the outdoor fan is running at full speed
  • Tp0 is the outdoor condenser coil temperature preset by the air conditioner
  • Ta0 is the preset outdoor ambient temperature of the air conditioner
  • Tp is the outdoor condenser
  • Ta is the average value of the outdoor ambient temperature
  • 273.5 is the lowest temperature of thermodynamics
  • the unit of thermodynamic temperature scale is Kelvin.
  • Step S405 controlling the outdoor fan to operate at the target rotational speed.
  • the control unit controls the outdoor fan to operate at the calculated target speed.
  • the target outdoor speed of the outdoor fan is determined by the detected outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing multiple control of the outdoor fan of the air conditioner, and two temperature detecting units are provided in the outdoor condenser, increasing The sampling point of the outdoor condenser coil temperature avoids the damage of the single detection unit and the hidden danger that the air conditioner operation cannot be controlled.

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Abstract

The invention discloses a control device for an outdoor fan of an air conditioner. The control device comprises: an outdoor environment temperature detection unit for detecting the temperature of the outdoor environment, a first temperature detection unit and a second temperature detection unit for detecting the temperature of a coil pipe of an outdoor condenser, a calculation unit for calculating the target rotating speed of the outdoor fan according to the temperature of the outdoor environment and the temperature of the coil pipe of the outdoor condenser, and a control unit for controlling the outdoor fan to run at the target rotating speed. The invention further discloses a control method for the outdoor fan of the air conditioner. The control device and the control method of the outdoor fan of the air conditioner avoid the hidden danger that if a single detection unit is damaged, the air conditioner's operation cannot be controlled.

Description

空调室外风机的控制装置及方法Air conditioner outdoor fan control device and method
本申请基于申请号为201710312578.4、申请日为2017年5月5日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。The present application is based on a Chinese patent application filed on Jan. 5, 2017, the entire disclosure of which is hereby incorporated by reference.
技术领域Technical field
本发明涉及空调技术领域，特别涉及一种空调室外风机的控制装置及方法。The invention relates to the technical field of air conditioners, and in particular to a control device and method for an outdoor fan of an air conditioner.
背景技术Background technique
中国专利申请号为201310100919.3，名称为“空调室外风机的控制电路、控制方法及空调器”的专利公开了一种室外风机的控制方法，该方案中通过一个冷凝器盘管温度检测单元在室外风机运转时获取室外冷凝器盘管温度与预设的参考温度比较确定室外风机的风速。China Patent Application No. 201310100919.3, entitled "Control Circuit, Control Method and Air Conditioner for Air Conditioning Outdoor Fan" discloses a control method for an outdoor fan, in which a condenser coil temperature detecting unit is used in an outdoor fan. The outdoor condenser coil temperature is obtained during operation to compare with the preset reference temperature to determine the wind speed of the outdoor fan.
该方案数据采集点单一，控制方式单一，当唯一的温度检测单元出现故障时，存在空调运转无法进行控制的隐患。The data collection point of the scheme is single, and the control mode is single. When the only temperature detecting unit fails, there is a hidden danger that the air conditioning operation cannot be controlled.
发明内容Summary of the invention
本发明实施例提供了一种空调室外风机的控制装置及方法，旨在解决现有方案存在的数据采集点单一，控制方式单一，当唯一的温度检测单元出现故障时，空调运转无法进行控制的问题。为了对披露的实施例的一些方面有一个基本的理解，下面给出了简单的概括。该概括部分不是泛泛评述，也不是要确定关键/重要组成元素或描绘这些实施例的保护范围。其唯一目的是用简单的形式呈现一些概念，以此作为后面的详细说明的序言。The embodiment of the invention provides a control device and method for an outdoor fan of an air conditioner, which aims to solve the problem that the existing data collection point is single and the control mode is single. When the only temperature detecting unit fails, the air conditioning operation cannot be controlled. problem. In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This generalization is not a general comment, nor is it intended to identify key/critical constituent elements or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the following detailed description.
根据本发明实施例的第一方面，提供了一种空调室外风机的控制装置，包括：室外环境温度检测单元，用于检测室外环境温度；第一温度检测单元和第二温度检测单元，用于检测室外冷凝器盘管温度；计算单元，用于根据所述室外环境温度和所述室外冷凝器盘管温度计算室外风机的目标转速；控制单元，用于控制所述室外风机以所述目标转速运行。According to a first aspect of the present invention, a control device for an outdoor fan of an air conditioner includes: an outdoor ambient temperature detecting unit for detecting an outdoor ambient temperature; a first temperature detecting unit and a second temperature detecting unit, configured to: Detecting an outdoor condenser coil temperature; calculating a unit for calculating a target speed of the outdoor fan according to the outdoor ambient temperature and the outdoor condenser coil temperature; and a control unit configured to control the outdoor fan to the target speed run.
可选地，所述计算单元根据如下公式计算所述室外风机的目标转速：Optionally, the calculating unit calculates a target rotating speed of the outdoor fan according to the following formula:
Figure PCTCN2018082318-appb-000001
Figure PCTCN2018082318-appb-000001
其中，n为室外风机的目标转速，N为室外风机全速运行时的额定最高转速，Tp0为空调预设的室外冷凝器盘管温度，Ta0为空调预设的室外环境温度，Tp为室外冷凝器盘管温度，Ta为室外环境温度。Where n is the target speed of the outdoor fan, N is the rated maximum speed when the outdoor fan is running at full speed, Tp0 is the outdoor condenser coil temperature preset by the air conditioner, Ta0 is the preset outdoor ambient temperature of the air conditioner, and Tp is the outdoor condenser Coil temperature, Ta is the outdoor ambient temperature.
可选地，所述第一温度检测单元和所述第二温度检测单元检测到的室外冷凝器盘管温度中较高的一个为室外冷凝器盘管温度。Optionally, a higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit is an outdoor condenser coil temperature.
可选地，所述控制单元，还用于控制所述室外风机启动后在第一设定时间内以第一转速运行。Optionally, the control unit is further configured to control the first fan to run at a first speed within a first set time after the outdoor fan is started.
根据本发明实施例的第二方面，提供一种空调室外风机的控制方法，包括：当检测到室外环境温度小于所述第一设定温度时，控制所述室外风机在第二设定时间内以根据所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行；当检测到所述室外冷凝器盘管温度与预设的室外冷凝器盘管温度的差值的绝对值大于第二设定温度时，控制所述室外风机在第二设定时间内以根据最新读取的所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行。According to a second aspect of the present invention, a method for controlling an outdoor fan of an air conditioner includes: controlling the outdoor fan to be in a second set time when detecting that the outdoor ambient temperature is less than the first set temperature Running at a target speed of the outdoor fan determined according to the outdoor ambient temperature, the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit; when the outdoor condenser coil temperature and the pre-detection are detected When the absolute value of the difference of the temperature of the outdoor condenser coil is greater than the second set temperature, controlling the outdoor fan to detect the outdoor ambient temperature and the first temperature according to the latest reading in the second set time The unit and the second temperature detecting unit detect the target fan speed of the outdoor fan determined by the outdoor condenser coil temperature.
可选地，所述控制所述室外风机在第二设定时间内以根据所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行包括：根据如下公式计算所述室外风机的目标转速：Optionally, the controlling the outdoor fan to determine an outdoor fan determined according to the outdoor ambient temperature, the first temperature detecting unit, and the second temperature detecting unit detected the outdoor condenser coil temperature in the second set time The target speed operation includes: calculating the target speed of the outdoor fan according to the following formula:
Figure PCTCN2018082318-appb-000002
Figure PCTCN2018082318-appb-000002
其中，n为室外风机的目标温度，N为室外风机全速运行时的额定最高转速，Tp0为空调预设的室外冷凝器盘管温度，Ta0为空调预设的室外环境温度，Tp为室外冷凝器盘管温度，Ta为室外环境温度；控制所述室外风机在第二设定时间内以所述目标转速运行。Where n is the target temperature of the outdoor fan, N is the rated maximum speed when the outdoor fan is running at full speed, Tp0 is the outdoor condenser coil temperature preset by the air conditioner, Ta0 is the preset outdoor ambient temperature of the air conditioner, and Tp is the outdoor condenser The coil temperature, Ta is an outdoor ambient temperature; controlling the outdoor fan to operate at the target rotational speed for a second set time.
可选地，所述室外冷凝器盘管温度为所述第一温度检测单元和所述第二温度检测单元检测到的室外冷凝器盘管温度中较高的一个。Optionally, the outdoor condenser coil temperature is the higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit.
可选地，所述方法还包括：每间隔第二设定时间读取一次所述室外环 境温度和所述室外冷凝器盘管温度，读取六组后结束；求取所述室外环境温度和所述室外冷凝器盘管温度的平均值。Optionally, the method further includes: reading the outdoor ambient temperature and the outdoor condenser coil temperature once every second set time, reading six sets and ending; determining the outdoor ambient temperature and The average of the outdoor condenser coil temperatures.
可选地，所述方法还包括：控制室外风机启动后在第一设定时间内以第一转速运行。Optionally, the method further includes: controlling to operate at the first speed within the first set time after the outdoor fan is started.
本发明实施例提供的技术方案可以包括以下有益效果：The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:
通过检测到的室外环境温度和室外冷凝器盘管温度确定室外风机的目标转速，实现了空调室外风机的多元控制，在室外冷凝器设有两个温度检测单元，增加了室外冷凝器盘管温度的采样点，避免了单一检测单元损坏，空调运转无法进行控制的隐患。The target outdoor speed of the outdoor fan is determined by the detected outdoor ambient temperature and the outdoor condenser coil temperature, and the multi-control of the outdoor fan of the air conditioner is realized. Two temperature detecting units are provided in the outdoor condenser, and the temperature of the outdoor condenser coil is increased. The sampling point avoids the hidden danger of the single detection unit being damaged and the air conditioning operation cannot be controlled.
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本发明。The above general description and the following detailed description are intended to be illustrative and not restrictive.
附图说明DRAWINGS
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。The accompanying drawings, which are incorporated in the specification of FIG
图1是根据一示例性实施例示出的一种空调室外风机的控制装置的框图；1 is a block diagram of a control device for an outdoor fan of an air conditioner, according to an exemplary embodiment;
图2是根据一示例性实施例示出的一种空调室外风机的控制方法的流程示意图；2 is a schematic flow chart of a method for controlling an outdoor fan of an air conditioner according to an exemplary embodiment;
图3是根据一示例性实施例示出的一种空调室外风机的控制方法的流程示意图；FIG. 3 is a schematic flow chart of a method for controlling an outdoor fan of an air conditioner according to an exemplary embodiment;
图4是根据一示例性实施例示出的一种确定室外风机的目标转速的流程示意图。FIG. 4 is a flow chart showing determining a target rotational speed of an outdoor fan according to an exemplary embodiment.
具体实施方式detailed description
以下描述和附图充分地示出本发明的具体实施方案，以使本领域的技术人员能够实践它们。其他实施方案可以包括结构的、逻辑的、电气的、过程的以及其他的改变。实施例仅代表可能的变化。除非明确要求，否则单独的部件和功能是可选的，并且操作的顺序可以变化。一些实施方案的部分和特征可以被包括在或替换其他实施方案的部分和特征。本发明的实 施方案的范围包括权利要求书的整个范围，以及权利要求书的所有可获得的等同物。在本文中，各实施方案可以被单独地或总地用术语“发明”来表示，这仅仅是为了方便，并且如果事实上公开了超过一个的发明，不是要自动地限制该应用的范围为任何单个发明或发明构思。本文中，诸如第一和第二等之类的关系术语仅仅用于将一个实体或者操作与另一个实体或操作区分开来，而不要求或者暗示这些实体或操作之间存在任何实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法或者设备中还存在另外的相同要素。本文中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的方法结构、产品等而言，由于其与实施例公开的方法部分相对应，所以描述的比较简单，相关之处参见方法部分说明即可。The detailed description of the embodiments of the invention are set forth in the description Other embodiments may include structural, logical, electrical, process, and other changes. The examples represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included or substituted for portions and features of other embodiments. The scope of the embodiments of the invention includes the full scope of the claims, and all equivalents of the claims. In this context, various embodiments may be referred to individually or collectively by the term "invention," for convenience only, and if more than one invention is disclosed, it is not intended to automatically limit the scope of the application to any A single invention or inventive concept. Herein, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not require or imply any actual relationship between the entities or operations or order. Furthermore, the terms "comprises" or "comprising" or "comprising" or any other variations are intended to encompass a non-exclusive inclusion, such that a process, method, or device that includes a plurality of elements includes not only those elements but also other items not specifically listed. Elements, or elements that are inherent to such a process, method, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, or device that comprises the element. The various embodiments herein are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the method structure, product, and the like disclosed in the embodiment, since it corresponds to the method part disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.
如图1所示为本发明实施例提供的空调室外风机的控制装置的结构示意图。包括：室外环境温度检测单元101，第一温度检测单元102，第二温度检测单元103，计算单元104和控制单元105。FIG. 1 is a schematic structural diagram of a control device for an outdoor fan of an air conditioner according to an embodiment of the present invention. The utility model comprises an outdoor environment temperature detecting unit 101, a first temperature detecting unit 102, a second temperature detecting unit 103, a calculating unit 104 and a control unit 105.
室外环境温度检测单元101用于检测室外环境温度。The outdoor ambient temperature detecting unit 101 is for detecting an outdoor ambient temperature.
第一温度检测单元102和第二温度检测单元103设置于室外冷凝器的表面的不同位置，用于检测室外冷凝器的温度。增加了室外冷凝器盘管温度的采样点，避免了单一温度检测单元出现故障，空调运转无法进行控制。在本实施例中第一温度检测单元102和第二温度检测单元103分别设置在冷凝器的上部和下部，在一些实施例中，第一温度检测单元102和第二温度检测单元103分别设置在冷凝器的左侧和右侧，在另一些实施例中，第一温度检测单元102和第二温度检测单元103分别设置在上部和左侧。The first temperature detecting unit 102 and the second temperature detecting unit 103 are disposed at different positions on the surface of the outdoor condenser for detecting the temperature of the outdoor condenser. The sampling point of the outdoor condenser coil temperature is increased, which avoids the failure of the single temperature detecting unit, and the air conditioning operation cannot be controlled. In the present embodiment, the first temperature detecting unit 102 and the second temperature detecting unit 103 are respectively disposed at the upper and lower portions of the condenser, and in some embodiments, the first temperature detecting unit 102 and the second temperature detecting unit 103 are respectively disposed at The left and right sides of the condenser, in other embodiments, the first temperature detecting unit 102 and the second temperature detecting unit 103 are disposed on the upper and left sides, respectively.
计算单元104，用于根据室外温度检测单元101检测到的室外环境温度和第一温度检测单元102和第二温度检测单元103检测到的室外冷凝器盘管温度计算室外风机的目标转速。The calculating unit 104 is configured to calculate the target rotational speed of the outdoor fan according to the outdoor ambient temperature detected by the outdoor temperature detecting unit 101 and the outdoor condenser coil temperature detected by the first temperature detecting unit 102 and the second temperature detecting unit 103.
控制单元105，用于控制室外风机以计算单元104计算得出的室外风机的目标转速运行。The control unit 105 is configured to control the outdoor fan to operate at the target speed of the outdoor fan calculated by the calculation unit 104.
本实施例提供的装置，通过检测到的室外环境温度和室外冷凝器盘管温度确定室外风机的目标转速，实现了空调室外风机的多元控制，在室外冷凝器设有两个温度检测单元，增加了室外冷凝器盘管温度的采样点，避免了单一检测单元损坏，空调运转无法进行控制的隐患。The device provided in this embodiment determines the target rotational speed of the outdoor fan by detecting the outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing the multi-function control of the outdoor fan of the air conditioner, and providing two temperature detecting units in the outdoor condenser, increasing The sampling point of the outdoor condenser coil temperature avoids the damage of the single detection unit and the hidden danger that the air conditioner operation cannot be controlled.
在另一些实施例中，空调室外风机的控制装置包括：室外环境温度检测单元101，第一温度检测单元102，第二温度检测单元103，计算单元104和控制单元105。In other embodiments, the control device for the outdoor fan of the air conditioner includes an outdoor ambient temperature detecting unit 101, a first temperature detecting unit 102, a second temperature detecting unit 103, a calculating unit 104, and a control unit 105.
室外环境温度检测单元101用于检测室外环境温度。The outdoor ambient temperature detecting unit 101 is for detecting an outdoor ambient temperature.
第一温度检测单元102和第二温度检测单元103设置于室外冷凝器的表面的不同位置，用于检测室外冷凝器的温度。The first temperature detecting unit 102 and the second temperature detecting unit 103 are disposed at different positions on the surface of the outdoor condenser for detecting the temperature of the outdoor condenser.
计算单元104用于根据如下公式计算所述室外风机的目标转速：The calculating unit 104 is configured to calculate the target rotational speed of the outdoor fan according to the following formula:
Figure PCTCN2018082318-appb-000003
Figure PCTCN2018082318-appb-000003
其中，n为室外风机的目标转速，N为室外风机全速运行时的额定最高转速，Tp0为空调预设的室外冷凝器盘管温度，Ta0为空调预设的室外环境温度，Tp为室外冷凝器盘管温度，Ta为室外环境温度，273.5为热力学的最低温度，热力学温标的单位是开尔文。Where n is the target speed of the outdoor fan, N is the rated maximum speed when the outdoor fan is running at full speed, Tp0 is the outdoor condenser coil temperature preset by the air conditioner, Ta0 is the preset outdoor ambient temperature of the air conditioner, and Tp is the outdoor condenser Coil temperature, Ta is the outdoor ambient temperature, 273.5 is the lowest temperature of thermodynamics, and the unit of thermodynamic temperature scale is Kelvin.
其中，室外冷凝器盘管温度为第一温度检测单元102和第二温度检测单元103检测出的室外冷凝器的温度中较高的一个。The outdoor condenser coil temperature is the higher one of the temperatures of the outdoor condensers detected by the first temperature detecting unit 102 and the second temperature detecting unit 103.
控制单元105，用于控制室外风机以计算单元104计算得出的室外风机的目标转速运行。控制单元105还用于控制所述室外风机启动后在第一设定时间内以第一转速运行。其中，第一设定时间的范围为：1～5分钟。在本实施例中，第一设定时间为2分钟。在根据室外冷凝器盘管温度和室外环境温度对室外风机转速进行控制前，室外风机运行2分钟，使得室外冷凝器的温度趋于稳定，方便控制。第一转速为室外风机全速运行时的额定最高转速，保证室外风机在启动时顺畅运行起来，且低转速启动时室外风机电流过大会损坏电机。The control unit 105 is configured to control the outdoor fan to operate at the target speed of the outdoor fan calculated by the calculation unit 104. The control unit 105 is further configured to control the first fan to operate at the first speed within the first set time after the outdoor fan is started. The first set time ranges from 1 to 5 minutes. In this embodiment, the first set time is 2 minutes. Before the outdoor fan speed is controlled according to the outdoor condenser coil temperature and the outdoor ambient temperature, the outdoor fan runs for 2 minutes, so that the temperature of the outdoor condenser tends to be stable and convenient for control. The first rotational speed is the rated maximum rotational speed of the outdoor fan at full speed operation, ensuring that the outdoor fan runs smoothly at the start-up, and the outdoor fan current excessively damages the motor when the low-speed start is started.
本实施例提供的装置，通过检测到的室外环境温度和室外冷凝器盘管温度确定室外风机的目标转速，实现了空调室外风机的多元控制，在室外 冷凝器设有两个温度检测单元，增加了室外冷凝器盘管温度的采样点，避免了单一检测单元损坏，空调运转无法进行控制的隐患。The device provided in this embodiment determines the target rotational speed of the outdoor fan by detecting the outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing the multi-function control of the outdoor fan of the air conditioner, and providing two temperature detecting units in the outdoor condenser, increasing The sampling point of the outdoor condenser coil temperature avoids the damage of the single detection unit and the hidden danger that the air conditioner operation cannot be controlled.
在另一些实施例中，计算单元104根据室外环境温度和室外冷凝器盘管温度计算室外风机的目标转速包括如下步骤。首先要对室外环境温度和室外冷凝器盘管温度进行采集，每间隔第三设定时间读取一次室外环境温度和室外冷凝器盘管温度，读取六组后结束。其中，第三设定时间为30秒，每间隔30秒读取一次温度，增加了样本数量同时提高对室外风机转速控制的效率。室外环境温度由室外环境温度检测单元101检测得出，室外冷凝器盘管温度由第一温度检测单元102和第二温度检测单元103检测得出。取6组数据中每一组中第一温度检测单元102和第二温度检测单元103检测到的室外冷凝器盘管温度中较高的一个计作室外冷凝器盘管温度。对室外环境温度和室外冷凝器盘管温度采集结束后，求取室外环境温度和室外冷凝器盘管温度的平均值，根据室外环境温度和室外冷凝器盘管温度的平均值由如下公式计算室外风机的目标转速。In other embodiments, calculating the target speed of the outdoor fan based on the outdoor ambient temperature and the outdoor condenser coil temperature includes the following steps. First, the outdoor ambient temperature and the outdoor condenser coil temperature should be collected, and the outdoor ambient temperature and the outdoor condenser coil temperature should be read once every third set time, and after reading six groups, the process ends. The third set time is 30 seconds, and the temperature is read once every 30 seconds, which increases the sample quantity and improves the efficiency of the outdoor fan speed control. The outdoor ambient temperature is detected by the outdoor ambient temperature detecting unit 101, and the outdoor condenser coil temperature is detected by the first temperature detecting unit 102 and the second temperature detecting unit 103. The higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit 102 and the second temperature detecting unit 103 in each of the six sets of data is counted as the outdoor condenser coil temperature. After the outdoor ambient temperature and the outdoor condenser coil temperature are collected, the average values of the outdoor ambient temperature and the outdoor condenser coil temperature are obtained, and the outdoor formula is calculated according to the average value of the outdoor ambient temperature and the outdoor condenser coil temperature. The target speed of the fan.
Figure PCTCN2018082318-appb-000004
Figure PCTCN2018082318-appb-000004
其中，n为室外风机的目标温度，N为室外风机全速运行时的额定最高转速，Tp0为空调预设的室外冷凝器盘管温度，Ta0为空调预设的室外环境温度，Tp为室外冷凝器盘管温度的平均值，Ta为室外环境温度的平均值，273.5为热力学的最低温度，热力学温标的单位是开尔文。Where n is the target temperature of the outdoor fan, N is the rated maximum speed when the outdoor fan is running at full speed, Tp0 is the outdoor condenser coil temperature preset by the air conditioner, Ta0 is the preset outdoor ambient temperature of the air conditioner, and Tp is the outdoor condenser The average value of the coil temperature, Ta is the average value of the outdoor ambient temperature, 273.5 is the lowest temperature of thermodynamics, and the unit of thermodynamic temperature scale is Kelvin.
如图2所示为本发明实施例提供的空调室外风机的控制方法的示意图。包括如下步骤。FIG. 2 is a schematic diagram of a method for controlling an outdoor fan of an air conditioner according to an embodiment of the present invention. Including the following steps.
步骤S201，当检测到室外环境温度小于所述第一设定温度时，控制所述室外风机在第二设定时间内以根据所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行。Step S201, when detecting that the outdoor ambient temperature is less than the first set temperature, controlling the outdoor fan to be in the second set time according to the outdoor ambient temperature, the first temperature detecting unit, and the second temperature detecting unit. The detected outdoor condenser coil temperature determines the target speed of the outdoor fan to operate.
当检测到室外环境温度小于所述第一设定温度时，计算单元根据室外环境温度检测得到的室外环境温度，第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度计算确定室外风机的目标转速，控制单元控制室外风机在第二设定时间内以该目标转速运行。其中，第一设定温度根据空调安装环境的环境温度平均值确定，在本实施例中，第一设定温度 为35℃。第二设定时间的范围为3～10分钟，在本实施例中，第二设定时间为5分钟。在第三设定时间内，室外风机以当前计算得出的目标温度稳定运行，当室外风机以当前计算得出的目标温度稳定运行达第二设定时间判断是否需要满足对室外风机的转速进行调整，保证空调稳定有效工作，避免了室外风机的频繁调整。When detecting that the outdoor ambient temperature is less than the first set temperature, the calculating unit calculates the outdoor ambient coil temperature according to the outdoor ambient temperature, and calculates the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit The target speed of the outdoor fan is determined, and the control unit controls the outdoor fan to operate at the target speed for the second set time. The first set temperature is determined according to an average value of the ambient temperature of the air-conditioning installation environment. In the embodiment, the first set temperature is 35 °C. The second set time ranges from 3 to 10 minutes. In the present embodiment, the second set time is 5 minutes. During the third set time, the outdoor fan runs stably at the currently calculated target temperature. When the outdoor fan runs stably at the current calculated target temperature for a second set time, it is determined whether the speed of the outdoor fan needs to be met. Adjustment, to ensure stable and effective operation of the air conditioner, to avoid frequent adjustment of the outdoor fan.
步骤S202，当检测到所述室外冷凝器盘管温度与预设的室外冷凝器盘管温度的差值的绝对值大于第二设定温度时，控制所述室外风机在第二设定时间内以根据最新读取的所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行。Step S202, when it is detected that the absolute value of the difference between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is greater than the second set temperature, controlling the outdoor fan to be in the second set time The operation is performed at a target rotational speed of the outdoor fan determined according to the outdoor environment temperature read, the first temperature detecting unit, and the outdoor condenser coil temperature detected by the second temperature detecting unit.
空调预设有一个室外冷凝器盘管温度，室外风机以当前计算得出的目标温度稳定运行达第二设定时间，当检测室外冷凝器盘管温度与预设的室外冷凝器盘管温度的差值的绝对值小于或等于第二设定温度时，室外风机以当前计算得出的目标温度稳定运行，当检测室外冷凝器盘管温度与预设的室外冷凝器盘管温度的差值的绝对值大于第二设定温度时，计算单元根据该状态下室外环境温度检测单元得到的室外环境温度，第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度再次计算确定室外风机的目标转速，控制单元控制室外风机在第二设定时间内以该最新计算得出的目标转速运行。The air conditioner is pre-configured with an outdoor condenser coil temperature, and the outdoor fan is stably operated at the current calculated target temperature for a second set time, when detecting the outdoor condenser coil temperature and the preset outdoor condenser coil temperature. When the absolute value of the difference is less than or equal to the second set temperature, the outdoor fan operates stably at the currently calculated target temperature, and when the difference between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is detected, When the absolute value is greater than the second set temperature, the calculation unit calculates and determines the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit according to the outdoor ambient temperature obtained by the outdoor ambient temperature detecting unit in the state. The target speed of the outdoor fan, the control unit controls the outdoor fan to operate at the latest calculated target speed within the second set time.
本实施例提供的方法，控制单元控制室外风机以通过检测到的室外环境温度和室外冷凝器盘管温度确定室外风机的目标转速运行，实现了空调室外风机的多元控制，在室外冷凝器设有两个温度检测单元，增加了室外冷凝器盘管温度的采样点，避免了单一检测单元损坏，空调运转无法进行控制的隐患。In the method provided by the embodiment, the control unit controls the outdoor fan to determine the target speed operation of the outdoor fan through the detected outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing the multiple control of the outdoor fan of the air conditioner, and is provided in the outdoor condenser. Two temperature detecting units increase the sampling point of the outdoor condenser coil temperature, avoiding the hidden danger of the single detecting unit being damaged and the air conditioning running cannot be controlled.
如图3所示为本发明实施例提供的空调室外风机的控制方法的示意图。包括如下步骤。FIG. 3 is a schematic diagram of a method for controlling an outdoor fan of an air conditioner according to an embodiment of the present invention. Including the following steps.
步骤S301，控制室外风机启动后在第一设定时间内以第一转速运行。Step S301, after controlling the outdoor fan to start, operating at the first rotation speed within the first set time.
控制单元控制室外风机启动后在第一设定时间内以第一转速运行。其中，第一设定时间的范围为：1～5分钟。在本实施例中，第一设定时间为2分钟。在根据室外冷凝器盘管温度和室外环境温度对室外风机转速进行控 制前，室外风机运行2分钟，使得室外冷凝器的温度趋于稳定，方便控制。第一转速为室外风机全速运行时的额定最高转速，保证室外风机在启动时顺畅运行起来，且低转速启动时室外风机电流过大会损坏电机。The control unit controls the outdoor fan to operate at the first speed within the first set time after starting. The first set time ranges from 1 to 5 minutes. In this embodiment, the first set time is 2 minutes. Before the outdoor fan speed is controlled according to the outdoor condenser coil temperature and the outdoor ambient temperature, the outdoor fan runs for 2 minutes, so that the temperature of the outdoor condenser tends to be stable and convenient for control. The first rotational speed is the rated maximum rotational speed of the outdoor fan at full speed operation, ensuring that the outdoor fan runs smoothly at the start-up, and the outdoor fan current excessively damages the motor when the low-speed start is started.
步骤S302，当检测到室外环境温度小于所述第一设定温度时，控制所述室外风机在第三设定时间内以根据所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行。Step S302, when it is detected that the outdoor ambient temperature is less than the first set temperature, controlling the outdoor fan to be in the third set time according to the outdoor ambient temperature, the first temperature detecting unit, and the second temperature detecting unit. The detected outdoor condenser coil temperature determines the target speed of the outdoor fan to operate.
当室外风机运行达到第一设定时间2分钟且检测到室外环境温度大于或等于第一设定温度时，室外风机以当前的第一转速继续运行，当检测到室外环境温度小于所述第一设定温度时，计算单元根据室外环境温度检测得到的室外环境温度，第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度计算确定室外风机的目标转速，计算公式如下：When the outdoor fan reaches the first set time for 2 minutes and the outdoor environment temperature is greater than or equal to the first set temperature, the outdoor fan continues to operate at the current first speed, and when the outdoor ambient temperature is detected to be less than the first When the temperature is set, the calculation unit determines the outdoor ambient temperature according to the outdoor ambient temperature, and the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit determines the target rotating speed of the outdoor fan, and the calculation formula is as follows:
Figure PCTCN2018082318-appb-000005
Figure PCTCN2018082318-appb-000005
其中，n为室外风机的目标转速，N为室外风机全速运行时的额定最高转速，Tp0为空调预设的室外冷凝器盘管温度，Ta0为空调预设的室外环境温度，Tp为室外冷凝器盘管温度，Ta为室外环境温度，273.5为热力学的最低温度，热力学温标的单位是开尔文。其中，室外冷凝器盘管温度为第一温度检测单元和第二温度检测单元检测出的室外冷凝器的温度中较高的一个。控制单元控制室外风机在第二设定时间内以该目标转速运行。Where n is the target speed of the outdoor fan, N is the rated maximum speed when the outdoor fan is running at full speed, Tp0 is the outdoor condenser coil temperature preset by the air conditioner, Ta0 is the preset outdoor ambient temperature of the air conditioner, and Tp is the outdoor condenser Coil temperature, Ta is the outdoor ambient temperature, 273.5 is the lowest temperature of thermodynamics, and the unit of thermodynamic temperature scale is Kelvin. The outdoor condenser coil temperature is the higher one of the temperatures of the outdoor condenser detected by the first temperature detecting unit and the second temperature detecting unit. The control unit controls the outdoor fan to operate at the target speed for a second set time.
步骤S303，当检测到所述室外冷凝器盘管温度与预设的室外冷凝器盘管温度的差值的绝对值大于第二设定温度时，控制所述室外风机在第二设定时间内以根据最新读取的所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行。Step S303, when it is detected that the absolute value of the difference between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is greater than the second set temperature, controlling the outdoor fan to be in the second set time The operation is performed at a target rotational speed of the outdoor fan determined according to the outdoor environment temperature read, the first temperature detecting unit, and the outdoor condenser coil temperature detected by the second temperature detecting unit.
其中，室外冷凝器盘管温度为第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度中较高的一个。Wherein, the outdoor condenser coil temperature is the higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit.
本实施例提供的方法，控制单元控制室外风机以通过检测到的室外环境温度和室外冷凝器盘管温度确定室外风机的目标转速运行，实现了空调室外风机的多元控制，在室外冷凝器设有两个温度检测单元，增加了室外冷凝器盘管温度的采样点，避免了单一检测单元损坏，空调运转无法进行 控制的隐患。In the method provided by the embodiment, the control unit controls the outdoor fan to determine the target speed operation of the outdoor fan through the detected outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing the multiple control of the outdoor fan of the air conditioner, and is provided in the outdoor condenser. Two temperature detecting units increase the sampling point of the outdoor condenser coil temperature, avoiding the hidden danger of the single detecting unit being damaged and the air conditioning running cannot be controlled.
在另一些实施例中，空调室外风机的控制方法，控制单元控制室外风机在第三设定时间内以根据室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行包括如下步骤。In another embodiment, the air conditioning outdoor fan control method, the control unit controls the outdoor fan to detect the outdoor condenser disk according to the outdoor ambient temperature, the first temperature detecting unit, and the second temperature detecting unit in the third set time The target speed operation of the outdoor fan determined by the tube temperature includes the following steps.
步骤S401，每间隔第三设定时间读取一次所述室外环境温度和所述室外冷凝器盘管温度，读取六组后结束。In step S401, the outdoor ambient temperature and the outdoor condenser coil temperature are read once every third set time, and after six sets are read, the process ends.
其中，第三设定时间为30秒，每间隔30秒读取一次温度，增加了样本数量同时提高对室外风机转速控制的效率。读取六组数据中，每组数据包括由室外环境温度检测单元检测到的室外环境温度，由第一温度检测单元检测到的室外冷凝器盘管温度和由第二温度检测单元检测得出的室外冷凝器盘管温度。The third set time is 30 seconds, and the temperature is read once every 30 seconds, which increases the sample quantity and improves the efficiency of the outdoor fan speed control. Reading six sets of data, each set of data includes an outdoor ambient temperature detected by the outdoor ambient temperature detecting unit, an outdoor condenser coil temperature detected by the first temperature detecting unit, and a detected by the second temperature detecting unit Outdoor condenser coil temperature.
步骤S402，取所述第一温度检测单元和所述第二温度检测单元检测到的室外冷凝器盘管温度中较高的一个计作所述室外冷凝器盘管温度。Step S402, taking the higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit as the outdoor condenser coil temperature.
在读取的六组数据中，每组数据包括两个室外冷凝器盘管温度，取两个室外冷凝器盘管温度中较高的一个作为室外冷凝器盘管温度有效值以进行室外风机转速计算。Among the six sets of data read, each set of data includes two outdoor condenser coil temperatures, and the higher one of the two outdoor condenser coil temperatures is used as the outdoor condenser coil temperature effective value for outdoor fan speed Calculation.
步骤S403，求取所述室外环境温度和所述室外冷凝器盘管温度的平均值。In step S403, an average value of the outdoor ambient temperature and the outdoor condenser coil temperature is obtained.
对六组数据中的室外环境温度和室外冷凝器盘管温度求取平均值。The average ambient temperature and outdoor condenser coil temperature in the six sets of data were averaged.
步骤S404，根据所述室外环境温度和所述室外冷凝器盘管温度的平均值计算所述室外风机的目标转速。Step S404, calculating a target rotational speed of the outdoor fan according to an average value of the outdoor ambient temperature and the outdoor condenser coil temperature.
根据室外环境温度和室外冷凝器盘管温度的平均值由如下公式计算室外风机的目标转速。The target speed of the outdoor fan is calculated by the following formula based on the average of the outdoor ambient temperature and the outdoor condenser coil temperature.
Figure PCTCN2018082318-appb-000006
Figure PCTCN2018082318-appb-000006
其中，n为室外风机的目标温度，N为室外风机全速运行时的额定最高转速，Tp0为空调预设的室外冷凝器盘管温度，Ta0为空调预设的室外环境温度，Tp为室外冷凝器盘管温度的平均值，Ta为室外环境温度的平均值，273.5为热力学的最低温度，热力学温标的单位是开尔文。Where n is the target temperature of the outdoor fan, N is the rated maximum speed when the outdoor fan is running at full speed, Tp0 is the outdoor condenser coil temperature preset by the air conditioner, Ta0 is the preset outdoor ambient temperature of the air conditioner, and Tp is the outdoor condenser The average value of the coil temperature, Ta is the average value of the outdoor ambient temperature, 273.5 is the lowest temperature of thermodynamics, and the unit of thermodynamic temperature scale is Kelvin.
步骤S405，控制所述室外风机以所述目标转速运行。Step S405, controlling the outdoor fan to operate at the target rotational speed.
控制单元控制室外风机以计算得出的目标转速运行。The control unit controls the outdoor fan to operate at the calculated target speed.
本实施例提供的方法，通过检测到的室外环境温度和室外冷凝器盘管温度确定室外风机的目标转速，实现了空调室外风机的多元控制，在室外冷凝器设有两个温度检测单元，增加了室外冷凝器盘管温度的采样点，避免了单一检测单元损坏，空调运转无法进行控制的隐患。In the method provided by the embodiment, the target outdoor speed of the outdoor fan is determined by the detected outdoor ambient temperature and the outdoor condenser coil temperature, thereby realizing multiple control of the outdoor fan of the air conditioner, and two temperature detecting units are provided in the outdoor condenser, increasing The sampling point of the outdoor condenser coil temperature avoids the damage of the single detection unit and the hidden danger that the air conditioner operation cannot be controlled.
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的流程及结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。It is to be understood that the invention is not to be construed as being limited to The scope of the invention is limited only by the appended claims.

Claims (9)

  1. 一种空调室外风机的控制装置，其特征在于，包括：A control device for an outdoor fan of an air conditioner, comprising:
    室外环境温度检测单元，用于检测室外环境温度；An outdoor ambient temperature detecting unit for detecting an outdoor ambient temperature;
    第一温度检测单元和第二温度检测单元，用于检测室外冷凝器盘管温度；a first temperature detecting unit and a second temperature detecting unit for detecting an outdoor condenser coil temperature;
    计算单元，用于根据所述室外环境温度和所述室外冷凝器盘管温度计算室外风机的目标转速；a calculating unit, configured to calculate a target rotating speed of the outdoor fan according to the outdoor ambient temperature and the outdoor condenser coil temperature;
    控制单元，用于控制所述室外风机以所述目标转速运行。And a control unit, configured to control the outdoor fan to operate at the target speed.
  2. 如权利要求1所述的装置，其特征在于，所述计算单元根据如下公式计算所述室外风机的目标转速：The apparatus according to claim 1, wherein said calculating unit calculates a target rotational speed of said outdoor fan according to the following formula:
    Figure PCTCN2018082318-appb-100001
    Figure PCTCN2018082318-appb-100001
    其中，n为室外风机的目标转速，N为室外风机全速运行时的额定最高转速，Tp0为空调预设的室外冷凝器盘管温度，Ta0为空调预设的室外环境温度，Tp为室外冷凝器盘管温度，Ta为室外环境温度。Where n is the target speed of the outdoor fan, N is the rated maximum speed when the outdoor fan is running at full speed, Tp0 is the outdoor condenser coil temperature preset by the air conditioner, Ta0 is the preset outdoor ambient temperature of the air conditioner, and Tp is the outdoor condenser Coil temperature, Ta is the outdoor ambient temperature.
  3. 如权利要求1或2所述的装置，其特征在于，所述第一温度检测单元和所述第二温度检测单元检测到的室外冷凝器盘管温度中较高的一个为室外冷凝器盘管温度。The apparatus according to claim 1 or 2, wherein a higher one of the outdoor condenser coil temperatures detected by said first temperature detecting unit and said second temperature detecting unit is an outdoor condenser coil temperature.
  4. 如权利要求1所述的装置，其特征在于，所述控制单元，还用于控制所述室外风机启动后在第一设定时间内以第一转速运行。The device according to claim 1, wherein the control unit is further configured to control the first fan to operate at a first speed within a first set time after the outdoor fan is started.
  5. 一种空调室外风机的控制方法，其特征在于，包括：A method for controlling an outdoor fan of an air conditioner, comprising:
    当检测到室外环境温度小于所述第一设定温度时，控制所述室外风机在第二设定时间内以根据所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行；When detecting that the outdoor ambient temperature is less than the first set temperature, controlling the outdoor fan to be detected according to the outdoor ambient temperature, the first temperature detecting unit, and the second temperature detecting unit within a second set time The target speed of the outdoor fan determined by the outdoor condenser coil temperature is operated;
    当检测到所述室外冷凝器盘管温度与预设的室外冷凝器盘管温度的差值的绝对值大于第二设定温度时，控制所述室外风机在第二设定时间内以根据最新读取的所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行。When it is detected that the absolute value of the difference between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is greater than the second set temperature, controlling the outdoor fan to be according to the latest in the second set time The read outdoor operating temperature, the first temperature detecting unit, and the target temperature of the outdoor fan determined by the outdoor condenser coil temperature detected by the second temperature detecting unit are operated.
  6. 如权利要求5所述的方法，其特征在于，所述控制所述室外风机在 第二设定时间内以根据所述室外环境温度、第一温度检测单元和第二温度检测单元检测到的室外冷凝器盘管温度确定的室外风机的目标转速运行包括：The method according to claim 5, wherein said controlling said outdoor fan to be outdoor detected according to said outdoor ambient temperature, said first temperature detecting unit and said second temperature detecting unit during said second set time The target speed operation of the outdoor fan determined by the condenser coil temperature includes:
    根据如下公式计算所述室外风机的目标转速：Calculate the target speed of the outdoor fan according to the following formula:
    Figure PCTCN2018082318-appb-100002
    Figure PCTCN2018082318-appb-100002
    其中，n为室外风机的目标温度，N为室外风机全速运行时的额定最高转速，Tp0为空调预设的室外冷凝器盘管温度，Ta0为空调预设的室外环境温度，Tp为室外冷凝器盘管温度，Ta为室外环境温度；Where n is the target temperature of the outdoor fan, N is the rated maximum speed when the outdoor fan is running at full speed, Tp0 is the outdoor condenser coil temperature preset by the air conditioner, Ta0 is the preset outdoor ambient temperature of the air conditioner, and Tp is the outdoor condenser Coil temperature, Ta is the outdoor ambient temperature;
    控制所述室外风机在第二设定时间内以所述目标转速运行。The outdoor fan is controlled to operate at the target speed for a second set time.
  7. 如权利要求5或6所述的方法，其特征在于，所述室外冷凝器盘管温度为所述第一温度检测单元和所述第二温度检测单元检测到的室外冷凝器盘管温度中较高的一个。The method according to claim 5 or 6, wherein the outdoor condenser coil temperature is the temperature of the outdoor condenser coil detected by the first temperature detecting unit and the second temperature detecting unit The tall one.
  8. 如权利要求6所述的方法，其特征在于，所述方法还包括：The method of claim 6 wherein the method further comprises:
    每间隔第二设定时间读取一次所述室外环境温度和所述室外冷凝器盘管温度，读取六组后结束；Reading the outdoor ambient temperature and the outdoor condenser coil temperature once every second set time, ending after reading six groups;
    求取所述室外环境温度和所述室外冷凝器盘管温度的平均值。An average of the outdoor ambient temperature and the outdoor condenser coil temperature is determined.
  9. 如权利要求5所述的方法，其特征在于，所述方法还包括：控制室外风机启动后在第一设定时间内以第一转速运行。The method of claim 5, further comprising: controlling the outdoor fan to operate at the first speed for a first set time after activation.
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