CN107143974B - Control device and method for outdoor fan of air conditioner - Google Patents
Control device and method for outdoor fan of air conditioner Download PDFInfo
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- CN107143974B CN107143974B CN201710312578.4A CN201710312578A CN107143974B CN 107143974 B CN107143974 B CN 107143974B CN 201710312578 A CN201710312578 A CN 201710312578A CN 107143974 B CN107143974 B CN 107143974B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- 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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- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control device of an outdoor fan of an air conditioner, which comprises: an outdoor environment temperature detection unit for detecting an outdoor environment temperature; the first temperature detection unit and the second temperature detection unit are used for detecting the temperature of the outdoor condenser coil; the calculating unit is used for calculating the target rotating speed of the outdoor fan according to the outdoor environment temperature and the outdoor condenser coil temperature; and the control unit is used for controlling the outdoor fan to operate at the target rotating speed. The invention also discloses a control method of the air conditioner outdoor fan.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control device and a control method for an outdoor fan of an air conditioner.
Background
The chinese patent application No. 201310100919.3 entitled "control circuit and control method for outdoor fan of air conditioner and air conditioner" discloses a control method for outdoor fan, in which a condenser coil temperature detection unit obtains the temperature of outdoor condenser coil and compares it with a preset reference temperature to determine the wind speed of outdoor fan when the outdoor fan is running.
According to the scheme, the data acquisition point is single, the control mode is single, and when the only temperature detection unit breaks down, the hidden trouble that the air conditioner cannot be controlled in operation exists.
Disclosure of Invention
The embodiment of the invention provides a control device and a control method for an outdoor fan of an air conditioner, and aims to solve the problems that in the existing scheme, a data acquisition point is single, a control mode is single, and when a unique temperature detection unit breaks down, the operation of the air conditioner cannot be controlled. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of embodiments of the present invention, there is provided a control apparatus of an outdoor fan of an air conditioner, including: an outdoor environment temperature detection unit for detecting an outdoor environment temperature; the first temperature detection unit and the second temperature detection unit are used for detecting the temperature of the outdoor condenser coil; the calculating unit is used for calculating the target rotating speed of the outdoor fan according to the outdoor environment temperature and the outdoor condenser coil temperature; and the control unit is used for controlling the outdoor fan to operate at the target rotating speed.
Optionally, the calculating unit calculates the target rotation speed of the outdoor fan according to the following formula:
wherein N is the target rotating speed of the outdoor fan, N is the rated maximum rotating speed of the outdoor fan when the outdoor fan operates at full speed, Tp0 is the preset outdoor condenser coil temperature of the air conditioner, Ta0 is the preset outdoor environment temperature of the air conditioner, Tp is the outdoor condenser coil temperature, and Ta is the outdoor environment temperature.
Optionally, the 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.
Optionally, the control unit is further configured to control the outdoor fan to operate at a first rotation speed within a first set time after being started.
According to a second aspect of the embodiments of the present invention, there is provided a control method of an outdoor fan of an air conditioner, including: when the outdoor environment temperature is detected to be lower than the first set temperature, controlling the outdoor fan to operate at a target rotating speed of the outdoor fan determined according to the outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within a second set time; and when the absolute value of the difference value between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is detected to be greater than a second set temperature, controlling the outdoor fan to operate at a target rotating speed of the outdoor fan determined according to the latest read outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within a second set time.
Optionally, the controlling the outdoor fan to operate at the target rotation speed of the outdoor fan determined according to the outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit within the second set time includes: calculating a target rotation speed of the outdoor fan according to the following formula:
wherein N is the target rotating speed of the outdoor fan, N is the rated highest rotating speed when the outdoor fan operates at full speed, Tp0 is the preset outdoor condenser coil temperature of the air conditioner, Ta0 is the preset outdoor environment temperature of the air conditioner, Tp is the outdoor condenser coil temperature, and Ta is the outdoor environment temperature; and controlling the outdoor fan to operate at the target rotating speed within a second set time.
Optionally, the outdoor condenser coil temperature is a higher one of the outdoor condenser coil temperatures detected by the first temperature detecting unit and the second temperature detecting unit.
Optionally, the method further comprises: reading the outdoor environment temperature and the outdoor condenser coil temperature once every second set time, and finishing after reading six groups; and calculating the average value of the outdoor environment temperature and the outdoor condenser coil temperature.
Optionally, the method further comprises: and controlling the outdoor fan to run at a first rotating speed within a first set time after the outdoor fan is started.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the target rotating speed of the outdoor fan is determined according to the detected outdoor environment temperature and the detected outdoor condenser coil temperature, the multi-element control of the outdoor fan of the air conditioner is realized, the outdoor condenser is provided with two temperature detection units, the sampling points of the outdoor condenser coil temperature are increased, the damage of a single detection unit is avoided, and the hidden trouble that the air conditioner cannot be controlled during operation is avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a block diagram illustrating a control apparatus of an outdoor fan of an air conditioner according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating a method of controlling an outdoor fan of an air conditioner in accordance with an exemplary embodiment;
FIG. 3 is a flow chart illustrating a method of controlling an outdoor fan of an air conditioner in accordance with an exemplary embodiment;
fig. 4 is a schematic flow chart illustrating a process of determining a target rotational speed of an outdoor fan according to an exemplary embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus 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, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the method structure, the product and the like disclosed by the embodiment, the description is relatively simple because the method structure, the product and the like correspond to the method part disclosed by the embodiment, and the relevant points can be referred to the method part for description.
Fig. 1 is a schematic structural diagram of a control device of an outdoor fan of an air conditioner according to an embodiment of the present invention. The method comprises the following steps: an outdoor ambient temperature detection unit 101, a first temperature detection unit 102, a second temperature detection unit 103, a calculation unit 104, and a control unit 105.
The outdoor environment temperature detection unit 101 is used to detect the outdoor environment temperature.
The first temperature detecting unit 102 and the second temperature detecting unit 103 are disposed at different positions of a surface of the outdoor condenser to detect a temperature of the outdoor condenser. The sampling point of the outdoor condenser coil temperature is increased, the single temperature detection unit is prevented from being out of order, and the air conditioner cannot be controlled in operation. In the present embodiment, the first temperature detecting unit 102 and the second temperature detecting unit 103 are respectively disposed at the upper portion and the lower portion of the condenser, in some embodiments, the first temperature detecting unit 102 and the second temperature detecting unit 103 are respectively disposed at the left side and the right side of the condenser, and in other embodiments, the first temperature detecting unit 102 and the second temperature detecting unit 103 are respectively disposed at the upper portion and the left side.
And a calculating unit 104, configured to calculate a target rotation speed of the outdoor fan according to the outdoor ambient temperature detected by the outdoor temperature detecting unit 101 and the outdoor condenser coil temperatures detected by the first temperature detecting unit 102 and the second temperature detecting unit 103.
And a control unit 105 for controlling the outdoor fan to operate at the target rotation speed of the outdoor fan calculated by the calculation unit 104.
The device that this embodiment provided, the target rotational speed of outdoor fan is confirmed through the outdoor ambient temperature who detects and outdoor condenser coil temperature, has realized the many first control of the outdoor fan of air conditioner, is equipped with two temperature detecting element at outdoor condenser, has increased the sampling point of outdoor condenser coil temperature, has avoided single detecting element to damage, and the air conditioner operation can't carry out the hidden danger of controlling.
In other embodiments, the control device of the outdoor fan of the air conditioner includes: an outdoor ambient temperature detection unit 101, a first temperature detection unit 102, a second temperature detection unit 103, a calculation unit 104, and a control unit 105.
The outdoor environment temperature detection unit 101 is used to detect the outdoor environment temperature.
The first temperature detecting unit 102 and the second temperature detecting unit 103 are disposed at different positions of a surface of the outdoor condenser to detect a temperature of the outdoor condenser.
The calculating unit 104 is configured to calculate a target rotation speed of the outdoor fan according to the following formula:
wherein N is the target rotating speed of the outdoor fan, N is the rated highest rotating speed of the outdoor fan when the outdoor fan operates at full speed, Tp0 is the preset outdoor condenser coil temperature of the air conditioner, Ta0 is the preset outdoor environment temperature of the air conditioner, Tp is the outdoor condenser coil temperature, Ta is the outdoor environment temperature, 273.5 is the lowest thermodynamic temperature, and the unit of the thermodynamic temperature scale is kelvin.
The outdoor condenser coil temperature is the higher one of the outdoor condenser temperatures detected by the first temperature detecting unit 102 and the second temperature detecting unit 103.
And a control unit 105 for controlling the outdoor fan to operate at the target rotation speed of the outdoor fan calculated by the calculation unit 104. The control unit 105 is further configured to control the outdoor fan to operate at the first rotation speed for a first set time after being started. Wherein, the range of the first set time is as follows: 1-5 minutes. In the present embodiment, the first set time is 2 minutes. Before the rotating speed of the outdoor fan is controlled according to the temperature of the coil pipe of the outdoor condenser and the outdoor environment temperature, the outdoor fan runs for 2 minutes, so that the temperature of the outdoor condenser tends to be stable and is convenient to control. The first rotating speed is the rated highest rotating speed when the outdoor fan runs at full speed, so that the outdoor fan can run smoothly when being started, and the motor can be damaged when the outdoor fan flows too much when being started at a low rotating speed.
The device that this embodiment provided, the target rotational speed of outdoor fan is confirmed through the outdoor ambient temperature who detects and outdoor condenser coil temperature, has realized the many first control of the outdoor fan of air conditioner, is equipped with two temperature detecting element at outdoor condenser, has increased the sampling point of outdoor condenser coil temperature, has avoided single detecting element to damage, and the air conditioner operation can't carry out the hidden danger of controlling.
In other embodiments, calculating the target speed of the outdoor fan by the calculation unit 104 based on the outdoor ambient temperature and the outdoor condenser coil temperature includes the following steps. Firstly, collecting the outdoor environment temperature and the outdoor condenser coil temperature, reading the outdoor environment temperature and the outdoor condenser coil temperature once every third set time, and finishing the reading after six groups. The third set time is 30 seconds, the temperature is read once every 30 seconds, the number of samples is increased, and the efficiency of controlling the rotating speed of the outdoor fan is improved. The outdoor ambient temperature is detected by an outdoor ambient temperature detection unit 101 and the outdoor condenser coil temperature is detected by a first temperature detection unit 102 and a second temperature detection unit 103. The higher 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 6 sets of data is taken as the outdoor condenser coil temperature. After the collection of the outdoor environment temperature and the outdoor condenser coil temperature is finished, the average value of the outdoor environment temperature and the outdoor condenser coil temperature is obtained, and the target rotating speed of the outdoor fan is calculated according to the average value of the outdoor environment temperature and the outdoor condenser coil temperature through the following formula.
Wherein N is the target rotating speed of the outdoor fan, N is the rated highest rotating speed of the outdoor fan when the outdoor fan operates at full speed, Tp0 is the preset outdoor condenser coil temperature of the air conditioner, Ta0 is the preset outdoor environment temperature of the air conditioner, Tp is the average value of the outdoor condenser coil temperature, Ta is the average value of the outdoor environment temperature, 273.5 is the lowest thermodynamic temperature, and the unit of the thermodynamic temperature scale is kelvin.
Fig. 2 is a schematic diagram illustrating a control method of an air conditioner outdoor fan according to an embodiment of the present invention. Comprises the following steps.
Step S201, when the outdoor environment temperature is detected to be lower than the first set temperature, the outdoor fan is controlled to operate at the target rotating speed of the outdoor fan determined according to the outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within the second set time.
When the outdoor environment temperature is detected to be lower than the first set temperature, the calculating unit calculates and determines the target rotating speed of the outdoor fan according to the outdoor environment temperature detected by the outdoor environment temperature and the temperatures of the outdoor condenser coil detected by the first temperature detecting unit and the second temperature detecting unit, and the control unit controls the outdoor fan to operate at the target rotating speed within the second set time. Wherein the first set temperature is determined according to the average value of the ambient temperature of the air conditioner installation environment, and in the embodiment, the first set temperature is 35 ℃. The second setting time is 3 to 10 minutes, and in this embodiment, the second setting time is 5 minutes. And in the third set time, the outdoor fan stably operates at the target temperature obtained by current calculation, and when the target temperature obtained by current calculation stably operates for the second set time, the outdoor fan judges whether the requirement for adjusting the rotating speed of the outdoor fan is met, so that the stable and effective work of the air conditioner is ensured, and the frequent adjustment of the outdoor fan is avoided.
And S202, when the absolute value of the difference value between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is detected to be greater than a second set temperature, controlling the outdoor fan to operate at a target rotating speed of the outdoor fan determined according to the latest read outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within a second set time.
The air conditioner presets an outdoor condenser coil temperature, the outdoor fan stably runs for a second set time at the target temperature obtained by current calculation, when the absolute value of the difference value between the detected outdoor condenser coil temperature and the preset outdoor condenser coil temperature is less than or equal to a second set temperature, the outdoor fan stably operates at the target temperature obtained by current calculation, when the absolute value of the difference between the detected outdoor condenser coil temperature and the preset outdoor condenser coil temperature is greater than the second set temperature, the calculating unit calculates and determines the target rotating speed of the outdoor fan again according to the outdoor environment temperature obtained by the outdoor environment temperature detecting unit and the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit under the state, and the control unit controls the outdoor fan to operate at the newly calculated target rotating speed within second set time.
According to the method provided by the embodiment, the control unit controls the outdoor fan to operate at the target rotating speed determined by the detected outdoor environment temperature and the detected outdoor condenser coil temperature, so that the multi-element control of the outdoor fan of the air conditioner is realized, the outdoor condenser is provided with the two temperature detection units, the sampling point of the outdoor condenser coil temperature is increased, and the hidden danger that the single detection unit is damaged and the air conditioner cannot be controlled during operation is avoided.
Fig. 3 is a schematic diagram illustrating a control method of an air conditioner outdoor fan according to an embodiment of the present invention. Comprises the following steps.
And S301, controlling the outdoor fan to run at a first rotating speed within a first set time after being started.
The control unit controls the outdoor fan to run at a first rotating speed within a first set time after being started. Wherein, the range of the first set time is as follows: 1-5 minutes. In the present embodiment, the first set time is 2 minutes. Before the rotating speed of the outdoor fan is controlled according to the temperature of the coil pipe of the outdoor condenser and the outdoor environment temperature, the outdoor fan runs for 2 minutes, so that the temperature of the outdoor condenser tends to be stable and is convenient to control. The first rotating speed is the rated highest rotating speed when the outdoor fan runs at full speed, so that the outdoor fan can run smoothly when being started, and the motor can be damaged when the outdoor fan flows too much when being started at a low rotating speed.
And step S302, when the outdoor environment temperature is detected to be lower than the first set temperature, controlling the outdoor fan to operate at the target rotating speed of the outdoor fan determined according to the outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within a third set time.
When the outdoor fan runs for 2 minutes and the outdoor environment temperature is detected to be greater than or equal to the first set temperature, the outdoor fan continues to run at the current first rotating speed, when the outdoor environment temperature is detected to be less than the first set temperature, the calculating unit calculates and determines the target rotating speed of the outdoor fan according to the outdoor environment temperature detected by the outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detecting unit and the second temperature detecting unit, and the calculation formula is as follows:
wherein N is the target rotating speed of the outdoor fan, N is the rated highest rotating speed of the outdoor fan when the outdoor fan operates at full speed, Tp0 is the preset outdoor condenser coil temperature of the air conditioner, Ta0 is the preset outdoor environment temperature of the air conditioner, Tp is the outdoor condenser coil temperature, Ta is the outdoor environment temperature, 273.5 is the lowest thermodynamic temperature, and the unit of the thermodynamic temperature scale is kelvin. The temperature of the coil of the outdoor condenser is the higher one of the temperatures of the outdoor condenser detected by the first temperature detection unit and the second temperature detection unit. The control unit controls the outdoor fan to operate at the target rotating speed within a second set time.
And step S303, when detecting that the absolute value of the difference value between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is greater than a second set temperature, controlling the outdoor fan to operate at a target rotating speed of the outdoor fan determined according to the latest read outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within a second set time.
The outdoor condenser coil temperature is the higher one of the outdoor condenser coil temperatures detected by the first temperature detection unit and the second temperature detection unit.
According to the method provided by the embodiment, the control unit controls the outdoor fan to operate at the target rotating speed determined by the detected outdoor environment temperature and the detected outdoor condenser coil temperature, so that the multi-element control of the outdoor fan of the air conditioner is realized, the outdoor condenser is provided with the two temperature detection units, the sampling point of the outdoor condenser coil temperature is increased, and the hidden danger that the single detection unit is damaged and the air conditioner cannot be controlled during operation is avoided.
In other embodiments, the method for controlling the outdoor fan of the air conditioner, wherein the control unit controls the outdoor fan to operate at the target rotating speed of the outdoor fan determined according to the outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within the third set time comprises the following steps.
And S401, reading the outdoor environment temperature and the outdoor condenser coil temperature once every third set time, and finishing after reading six groups.
The third set time is 30 seconds, the temperature is read once every 30 seconds, the number of samples is increased, and the efficiency of controlling the rotating speed of the outdoor fan is improved. Reading six groups of data, each group of data comprises the outdoor environment temperature detected by the outdoor environment temperature detection unit, the outdoor condenser coil temperature detected by the first temperature detection unit and the outdoor condenser coil temperature detected by the second temperature detection unit.
Step S402, the higher one of the outdoor condenser coil temperatures detected by the first temperature detection unit and the second temperature detection unit is taken as the outdoor condenser coil temperature.
And in the read six groups of data, each group of data comprises two outdoor condenser coil temperatures, and the higher one of the two outdoor condenser coil temperatures is taken as an effective value of the outdoor condenser coil temperature to calculate the rotating speed of the outdoor fan.
Step S403, an average value of the outdoor ambient temperature and the outdoor condenser coil temperature is obtained.
The outdoor ambient temperature and the outdoor condenser coil temperature in the six sets of data were averaged.
And S404, calculating the target rotating speed of the outdoor fan according to the average value of the outdoor environment temperature and the outdoor condenser coil temperature.
The target speed of the outdoor fan is calculated according to the average value of the outdoor environment temperature and the outdoor condenser coil temperature by the following formula.
Wherein N is the target rotating speed of the outdoor fan, N is the rated highest rotating speed of the outdoor fan when the outdoor fan operates at full speed, Tp0 is the preset outdoor condenser coil temperature of the air conditioner, Ta0 is the preset outdoor environment temperature of the air conditioner, Tp is the average value of the outdoor condenser coil temperature, Ta is the average value of the outdoor environment temperature, 273.5 is the lowest thermodynamic temperature, and the unit of the thermodynamic temperature scale is kelvin.
And S405, controlling the outdoor fan to operate at the target rotating speed.
The control unit controls the outdoor fan to operate at the calculated target rotating speed.
According to the method provided by the embodiment, the target rotating speed of the outdoor fan is determined according to the detected outdoor environment temperature and the detected outdoor condenser coil temperature, the multi-element control of the outdoor fan of the air conditioner is realized, the outdoor condenser is provided with the two temperature detection units, the sampling points of the outdoor condenser coil temperature are increased, and the hidden danger that the single detection unit is damaged and the air conditioner cannot be controlled during operation is avoided.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (4)
1. A control device for an outdoor fan of an air conditioner, comprising:
an outdoor environment temperature detection unit for detecting an outdoor environment temperature;
the first temperature detection unit and the second temperature detection unit are used for detecting the temperature of the outdoor condenser coil;
a calculation unit for calculating a target speed of an outdoor fan according to the outdoor ambient temperature and the outdoor condenser coil temperature, comprising:
reading the outdoor environment temperature and the outdoor condenser coil temperature once every third set time, and finishing after reading six groups;
taking the higher one of the outdoor condenser coil temperatures detected by the first temperature detection unit and the second temperature detection unit in each of the six groups of data as the outdoor condenser coil temperature;
after the collection of the outdoor environment temperature and the outdoor condenser coil temperature is finished, the average value of the outdoor environment temperature and the outdoor condenser coil temperature is obtained;
calculating the target speed of the outdoor fan according to the average value of the outdoor environment temperature and the outdoor condenser coil temperature by the following formula:
wherein N is the target rotating speed of the outdoor fan, N is the rated highest rotating speed when the outdoor fan operates at full speed, Tp0 is the preset outdoor condenser coil temperature of the air conditioner, Ta0 is the preset outdoor environment temperature of the air conditioner, Tp is the average value of the outdoor condenser coil temperature, and Ta is the average value of the outdoor environment temperature;
and the control unit is used for controlling the outdoor fan to operate at the target rotating speed.
2. The apparatus of claim 1, wherein the control unit is further configured to control the outdoor fan to operate at a first rotational speed for a first set time after being activated.
3. A control method of an outdoor fan of an air conditioner is characterized by comprising the following steps:
when detecting that outdoor environment temperature is less than first settlement temperature, control outdoor fan in the second settlement time with according to outdoor environment temperature, the first temperature detecting element and the second temperature detecting element detect the outdoor condenser coil pipe temperature definite outdoor fan's target rotational speed operation, include:
reading the outdoor environment temperature and the outdoor condenser coil temperature once every third set time, and finishing after reading six groups;
taking the higher one of the outdoor condenser coil temperatures detected by the first temperature detection unit and the second temperature detection unit as the outdoor condenser coil temperature;
averaging the outdoor ambient temperature and the outdoor condenser coil temperature;
calculating the target rotating speed of the outdoor fan according to the average value of the outdoor environment temperature and the outdoor condenser coil temperature;
calculating the target rotating speed of the outdoor fan according to the average value of the outdoor environment temperature and the outdoor condenser coil temperature by the following formula:
wherein N is the target rotating speed of the outdoor fan, N is the rated highest rotating speed when the outdoor fan operates at full speed, Tp0 is the preset outdoor condenser coil temperature of the air conditioner, Ta0 is the preset outdoor environment temperature of the air conditioner, Tp is the average value of the outdoor condenser coil temperature, and Ta is the average value of the outdoor environment temperature;
and when the absolute value of the difference value between the outdoor condenser coil temperature and the preset outdoor condenser coil temperature is detected to be greater than a second set temperature, controlling the outdoor fan to operate at a target rotating speed of the outdoor fan determined according to the latest read outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within a second set time.
4. The method of claim 3, wherein the method further comprises: and controlling the outdoor fan to run at a first rotating speed within a first set time after the outdoor fan is started.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710312578.4A CN107143974B (en) | 2017-05-05 | 2017-05-05 | Control device and method for outdoor fan of air conditioner |
| PCT/CN2018/082318 WO2018201852A1 (en) | 2017-05-05 | 2018-04-09 | Air conditioner outdoor fan control device and method |
| US16/604,940 US20200056798A1 (en) | 2017-05-05 | 2018-04-09 | Control device and method for outdoor fan of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710312578.4A CN107143974B (en) | 2017-05-05 | 2017-05-05 | Control device and method for outdoor fan of air conditioner |
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| CN107143974A CN107143974A (en) | 2017-09-08 |
| CN107143974B true CN107143974B (en) | 2020-10-20 |
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| US (1) | US20200056798A1 (en) |
| CN (1) | CN107143974B (en) |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143974B (en) * | 2017-05-05 | 2020-10-20 | 青岛海尔空调电子有限公司 | Control device and method for outdoor fan of air conditioner |
| CN108302717A (en) * | 2018-01-11 | 2018-07-20 | 广东美的制冷设备有限公司 | The control method and air conditioner of air conditioner |
| CN108759033A (en) * | 2018-07-27 | 2018-11-06 | 山东朗进科技股份有限公司 | A kind of control method of air-conditioner set condensation fan |
| CN110470027B (en) * | 2019-09-19 | 2020-11-10 | 四川虹美智能科技有限公司 | Direct current fan adjusting method, controller and temperature adjusting system |
| CN111023393A (en) * | 2019-11-15 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Control method and system of outdoor fan and air conditioner |
| CN112432358B (en) * | 2020-10-29 | 2022-03-29 | 青岛海尔空调器有限总公司 | Amortization subassembly and air conditioning system |
| CN112611084B (en) * | 2020-11-23 | 2022-01-28 | 珠海格力电器股份有限公司 | Low-temperature refrigeration control method and system, air conditioner, medium and terminal |
| CN112856842A (en) * | 2021-01-25 | 2021-05-28 | 珠海格力电器股份有限公司 | Control method of water chiller and water chiller |
| CN113405215B (en) * | 2021-07-02 | 2022-04-19 | 宁波奥克斯电气股份有限公司 | External fan control method and device and air conditioner |
| CN115682283A (en) * | 2022-10-29 | 2023-02-03 | 珠海格力电器股份有限公司 | Air conditioner condensation prevention control method and device, air conditioner and medium |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107143974A (en) | 2017-09-08 |
| US20200056798A1 (en) | 2020-02-20 |
| WO2018201852A1 (en) | 2018-11-08 |
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Effective date of registration: 20201105 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd. |