CN112146158A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN112146158A
CN112146158A CN202010295979.5A CN202010295979A CN112146158A CN 112146158 A CN112146158 A CN 112146158A CN 202010295979 A CN202010295979 A CN 202010295979A CN 112146158 A CN112146158 A CN 112146158A
Authority
CN
China
Prior art keywords
blower fan
outdoor
time
air conditioner
outdoor fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010295979.5A
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Chinese (zh)
Other versions
CN112146158B (en
Inventor
加藤智大
中村聪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Johnson Controls Air Conditioning Inc
Original Assignee
Hitachi Johnson Controls Air Conditioning Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Johnson Controls Air Conditioning Inc filed Critical Hitachi Johnson Controls Air Conditioning Inc
Publication of CN112146158A publication Critical patent/CN112146158A/en
Application granted granted Critical
Publication of CN112146158B publication Critical patent/CN112146158B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • 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
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • 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
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F24F2013/205—Mounting a ventilator fan therein

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

Abstract

The invention provides an air conditioner, aiming to reduce the possibility of falling off of an outdoor air supply fan. The air supply fan is used for supplying air to the outdoor heat exchanger. The blower fan is rotated in a first direction in which a fixing member for fixing the blower fan to the casing is loosened.

Description

Air conditioner
Technical Field
The present invention relates to an air conditioner.
Background
In the outdoor unit, the outdoor blower fan may be reversed in a direction opposite to the rotation direction during normal operation. Patent document 1 discloses the following outdoor unit: in order to control the water vapor generated by the defrosting operation to enter the control device, the outdoor air supply fan is reversed until a predetermined time elapses.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-36716
Disclosure of Invention
Problems to be solved by the invention
If the outdoor blower fan is rotated reversely, the nut for fixing the blower fan is loosened, and the blower fan may fall off.
Therefore, the present invention aims to reduce the possibility of dropping the outdoor blower fan.
Means for solving the problems
The air conditioner of the invention comprises: a blower fan that delivers air to the outdoor heat exchanger; and a control unit that controls an acceleration or a rotation speed per unit time when the blower fan is rotated in a first direction in which a fixing member that fixes the blower fan to the casing is loosened.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the invention, the possibility of falling off of the outdoor air supply fan can be reduced.
Drawings
Fig. 1 is an external structural view showing an air conditioner according to an embodiment.
Fig. 2 is a diagram illustrating a refrigerant circuit of an air conditioner according to an embodiment.
Fig. 3 is a diagram showing a structure of an outdoor fan according to the embodiment.
Fig. 4 is a diagram showing a control curve and the like of the embodiment.
In the figure:
1-air conditioner, 23-outdoor fan, 23 e-nut, 26-control board.
Detailed Description
Hereinafter, embodiments of the present invention will be described based on the drawings.
Fig. 1 is an external structural view showing an air conditioner 1 according to an embodiment. The air conditioner 1 performs air conditioning by circulating a refrigerant through a refrigeration cycle (heat pump cycle). As shown in fig. 1, the air conditioner 1 includes an indoor unit 10 installed indoors (in a space to be air-conditioned), an outdoor unit 20 installed outdoors (outdoors), and a remote controller 30 operated by a user.
The indoor unit 10 includes a remote controller communication unit 11. The remote controller communication unit 11 transmits and receives a predetermined signal to and from the remote controller 30 by infrared communication or the like. For example, the remote controller communication unit 11 receives signals such as an operation/stop command, a change in set temperature, a change in operation mode, and a timer setting from the remote controller 30. The remote controller communication unit 11 transmits the detected value of the indoor temperature and the like to the remote controller 30. As another example, the remote controller 30 may transmit information only to the remote controller communication unit 11, and the remote controller communication unit 11 may receive information only from the remote controller 30. That is, the communication between the remote controller 30 and the remote controller communication unit 11 may be performed in only one direction. Although not shown in fig. 1, the indoor unit 10 and the outdoor unit 20 are connected via a refrigerant pipe and are also connected via a communication line.
Fig. 2 is a diagram illustrating a refrigerant circuit Q of the air conditioner 1 according to the embodiment. Note that solid arrows shown in fig. 2 show the flow of the refrigerant during the heating operation. The dashed arrows shown in fig. 2 indicate the flow of the refrigerant during the cooling operation.
As shown in fig. 2, the indoor unit 10 includes an indoor heat exchanger 12 and an indoor fan 14 in addition to the remote controller communication unit 11. In the indoor heat exchanger 12, heat is exchanged between the refrigerant flowing through the heat transfer tubes (not shown) and the indoor air sent from the indoor fan 14. The indoor heat exchanger 12 operates as a condenser or an evaporator by switching a four-way valve 25 described below.
As shown in fig. 2, the outdoor unit 20 includes a compressor 21, an outdoor heat exchanger 22, an outdoor fan 23, an outdoor expansion valve 24 (expansion valve), a four-way valve 25, and a control board 26. The compressor 21 is driven by a compressor motor 21a to compress a low-temperature low-pressure gas refrigerant into a high-temperature high-pressure gas refrigerant, and discharge the gas refrigerant. In the outdoor heat exchanger 22, heat is exchanged between the refrigerant flowing through the heat transfer pipe (not shown) and the outside air sent from the outdoor fan 23. The outdoor heat exchanger 22 operates as a condenser or an evaporator by switching of the four-way valve 25. The outdoor fan 23 is an example of a blower fan.
The outdoor fan 23 is provided in the vicinity of the outdoor heat exchanger 22. The outdoor fan 23 sends outside air to the outdoor heat exchanger 22 by driving the outdoor fan motor 23 a. The outdoor expansion valve 24 has a function of decompressing the refrigerant condensed by the "condenser" (one of the outdoor heat exchanger 22 and the indoor heat exchanger 12). The refrigerant decompressed by the outdoor expansion valve 24 is guided to the "evaporator" (the other of the outdoor heat exchanger 22 and the indoor heat exchanger 12).
The four-way valve 25 is a valve for switching the flow path of the refrigerant according to the operation mode of the air conditioner 1. By switching the four-way valve 25, during the cooling operation, as indicated by broken arrows, the refrigerant becomes a refrigeration cycle in which the refrigerant circulates in order to the compressor 21, the outdoor heat exchanger 22 (condenser), the outdoor expansion valve 24, and the indoor heat exchanger 12 (evaporator). In the heating operation, the four-way valve 25 is switched to provide a refrigeration cycle in which the refrigerant circulates through the compressor 21, the indoor heat exchanger 12 (condenser), the outdoor expansion valve 24, and the outdoor heat exchanger 22 (evaporator) in this order, as indicated by solid arrows. That is, in the refrigerant circuit Q in which the refrigerant circulates in the refrigeration cycle through the compressor 21, the "condenser", the outdoor expansion valve 24, and the "evaporator" in this order, one of the "condenser" and the "evaporator" is the outdoor heat exchanger 22, and the other is the indoor heat exchanger 12.
The control board 26 includes a compressor control circuit, an outdoor expansion valve control circuit, an outdoor fan control circuit, and the like, which are not shown. The compressor control circuit controls the operation of the compressor 21. The outdoor expansion valve control circuit transmits a pulse signal for driving the pulse motor of the outdoor expansion valve 24. The outdoor fan control circuit controls the driving of an outdoor fan motor 23a of an outdoor fan 23 attached to the outdoor heat exchanger 22. The control board 26 is an example of a control unit.
Fig. 3 is a diagram showing the structure of the outdoor fan 23 of the embodiment. Fig. 3 (a) is an exploded perspective view of the outdoor fan 23 and the like. Fig. 3 (B) is a sectional view of the outdoor fan 23 and the like. The outdoor fan motor 23a is attached to the motor stay 23c by screws 23 b. The outdoor fan 23 is attached to a motor shaft of the outdoor fan motor 23a by a nut 23 e. That is, the outdoor fan 23 is attached to the motor support 23c via the outdoor fan motor 23a and is fixed by a nut 23 e. Further, the motor support 23c is attached to the case 28 directly or via another member. Here, the nut 23e is an example of a fixing member. The fixing member for fixing the outdoor fan 23 may be a member for directly or indirectly fixing the outdoor fan 23 to the case 28, and is not limited to the nut 23 e. As another example, the fixing member may be a bolt or a screw.
The outdoor unit 20 of the present embodiment performs an air conditioning operation, and performs a dust removal operation after the air conditioning operation. Here, the dust removal operation is an operation of removing dust adhering to the outdoor fan 23 by rotating the outdoor fan 23 in a direction opposite to the rotation direction of the outdoor fan 23 during the air conditioning operation. Hereinafter, the rotation of the outdoor fan 23 during the air conditioning operation is referred to as forward rotation. The rotation of the outdoor fan 23 in the direction opposite to the direction of rotation of the outdoor fan 23 during the air conditioning operation, that is, the rotation of the outdoor fan 23 during the dust removal operation, is referred to as reverse rotation. The outdoor unit 20 of the present embodiment is designed such that the direction of normal rotation of the fan coincides with the direction in which the nut 23e is tightened. That is, during the dust removing operation, the outdoor fan 23 rotates in a direction in which the nut 23e loosens. In contrast, the control board 26 of the outdoor unit 20 of the present embodiment performs the following control to prevent the nut 23e from loosening.
The control of the reverse rotation of the outdoor fan 23 by the control board 26 will be described below. When the user operates the remote controller 30 to instruct the indoor unit 10 to stop the air conditioning operation, the control board 26 stops the air conditioning operation and starts the dust removal operation. More specifically, the control board 26 instructs the outdoor fan motor 23a to start reverse rotation. Thereafter, the control board 26 controls the inverted acceleration according to the acceleration control curve 401 shown in fig. 4. The horizontal axis of the graph shown in fig. 4 shows time, and the vertical axis shows the rotation speed (rotation speed per unit time). Also shown in the graph of fig. 4 are a control curve 401 for reverse rotation and a control curve 402 for forward rotation.
In addition, when both the dust removal operation and the other cleaning operation are performed after the air conditioning operation is stopped, the control board 26 starts the dust removal operation before the other cleaning operation. The other cleaning operation is an operation in which it is necessary to operate the devices in the outdoor unit 20, and for example, is an operation in which dew condensation water is generated in the outdoor heat exchanger 22 to wash out dust adhering to the outdoor heat exchanger 22. The cleaning operation, which does not require the operation of the devices in the outdoor unit 20, may be performed simultaneously with the dust removal operation, or may be performed in advance of either one of them.
After the outdoor fan motor 23a is started, the control board 26 performs control so that the acceleration is equal in both the case of the normal rotation and the case of the reverse rotation for a certain time (until time t1 in the example of fig. 4).
The control board 26 controls the outdoor fan motor 23a such that, after a time t1 has elapsed, the acceleration in the case of rotating the outdoor fan 23 in the reverse direction is smaller than the acceleration in the case of rotating the outdoor fan 23 in the normal direction. Further, the acceleration of the normal rotation and the acceleration of the reverse rotation after the time t1 has elapsed are determined in advance. For example, when the acceleration for the forward rotation is set to 24rpm/s, the acceleration for the reverse rotation is set to 20 rpm/s. Thus, the force applied to the nut 23e at the time of normal rotation (the force for tightening the nut 23 e) is larger than the force applied to the nut 23e at the time of reverse rotation (the force for loosening the nut 23 e). Therefore, the possibility that the outdoor fan 23 is detached due to the reverse rotation of the nut 23e can be reduced.
The reason why the acceleration in the reverse rotation is equal to the acceleration in the normal rotation before the time t1 elapses is that: even at the time of startup, if the acceleration in the reverse rotation is set to a value smaller than the acceleration in the normal rotation, the acceleration may be too low, and the startup may fail.
After the start, the acceleration may be set to a predetermined value or more both in the case of the normal rotation and in the case of the reverse rotation within a certain time (until time t1 in the example of fig. 4), and the acceleration may not necessarily be controlled to be equal in the case of the normal rotation and in the case of the reverse rotation. However, the predetermined value is preferably set to a value higher than the acceleration of the reverse rotation after a certain time (from time t1 to time t2 in fig. 4). That is, when the outdoor fan 23 is rotated in the reverse direction, the control board 26 is controlled so that the acceleration from the start of rotation to time t1 is greater than the acceleration from time t1 to time t 2.
The control board 26 also controls the outdoor fan motor 23a such that the maximum rotational speed per unit time at which the outdoor fan 23 rotates in the reverse direction after the acceleration is stopped (after time t2 in fig. 4) is lower than the maximum rotational speed per unit time at which the outdoor fan 23 rotates in the normal direction. More specifically, the maximum rotation speed per unit time of the normal rotation is determined in advance, and a value lower than the maximum rotation speed per unit time of the normal rotation is set in advance as the maximum rotation speed per unit time of the reverse rotation. The control board 26 controls the outdoor fan motor 23a so that the maximum rotation speed per unit time of the reverse rotation is not exceeded during the reverse rotation. This can prevent the nut 23e from loosening due to reverse rotation.
In addition, a reverse rotation time for reversing the outdoor fan 23 in the dust removal process is set in advance. Here, the reverse rotation time is a period shorter than the minimum operation time of the hot start. Here, in the air conditioning operation, there are periods of hot on and hot off. The hot shutdown is, for example, a period during which the room temperature reaches a target value and the compressor 21 and the outdoor fan 23 are stopped. On the other hand, the warm on refers to a period during which the compressor 21 and the outdoor fan 23 are driven. The minimum operating time for the hot start is predetermined. When the control board 26 performs the inversion, the inversion is stopped when the inversion time elapses. This prevents the nut 23e from loosening due to the time for reverse rotation exceeding the time for normal rotation.
When the control board 26 causes the outdoor fan 23 to rotate reversely for a predetermined time at the acceleration, the dust removal operation is terminated. At this time, the control board 26 controls the outdoor fan motor 23a so that the deceleration until the reverse rotation of the outdoor fan 23 is stopped is larger than the acceleration in the case of reversing the outdoor fan 23. More specifically, the control board 26 stops the supply of electric power to the outdoor fan motor 23a when the dust removing operation is finished. That is, the control board 26 does not perform deceleration control such as gradually reducing the speed when the reverse rotation of the outdoor fan 23 is stopped. Thereby, the outdoor fan 23 is rapidly decelerated. In this way, the control board 26 controls the deceleration to be larger than the acceleration of the reverse rotation at the time of deceleration of the reverse rotation. Therefore, even at the time of deceleration of reverse rotation, the nut 23e can be prevented from loosening due to reverse rotation.
As described above, the air conditioner 1 according to the present embodiment can reduce the possibility of the outdoor fan 23 falling off by controlling the acceleration of the outdoor fan 23 during reverse rotation.
However, the timing of reversing is not limited to the end of the air conditioning operation. For example, the inversion may be performed at an arbitrary timing in accordance with a user operation. In the present embodiment, the dust removal operation has been described as an example of the control of the outdoor fan 23 during reverse rotation, but the case of performing reverse rotation of the outdoor fan 23 is not limited to the dust removal operation.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the specific embodiments.

Claims (6)

1. An air conditioner is characterized by comprising:
a blower fan that delivers air to the outdoor heat exchanger; and
and a control unit that controls an acceleration when the blower fan is rotated in a first direction in which a fixing member that fixes the blower fan to a casing is loosened to be smaller than a deceleration until the rotation of the blower fan in the first direction is stopped.
2. An air conditioner is characterized by comprising:
a blower fan that delivers air to the outdoor heat exchanger; and
and a control unit that controls a maximum rotation speed per unit time of the blower fan rotating in a first direction in which a fixing member that fixes the blower fan to the casing is loosened to be lower than a maximum rotation speed per unit time of the blower fan rotating in a second direction opposite to the first direction.
3. An air conditioner is characterized by comprising:
a blower fan that delivers air to the outdoor heat exchanger; and
and a control unit that controls an acceleration from start of rotation to elapse of a first time to be greater than an acceleration after elapse of the first time when the blower fan is rotated in the first direction, wherein the first direction is a direction in which a fixing member that fixes the blower fan to a housing is loosened.
4. An air conditioner according to any one of claims 1 to 3,
the control unit stops the blower fan after the blower fan is rotated in the first direction and before a minimum operation time of the hot start elapses.
5. An air conditioner according to any one of claims 1 to 3,
the control unit controls the blower fan to rotate in a second direction opposite to the first direction during the air conditioning operation, and controls the blower fan to rotate in the first direction after the air conditioning operation is completed.
6. The air conditioner according to claim 4,
the control unit controls the blower fan to rotate in a second direction opposite to the first direction during the air conditioning operation, and controls the blower fan to rotate in the first direction after the air conditioning operation is completed.
CN202010295979.5A 2019-06-26 2020-04-15 Air conditioner Active CN112146158B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-118024 2019-06-26
JP2019118024A JP6670970B1 (en) 2019-06-26 2019-06-26 Air conditioner

Publications (2)

Publication Number Publication Date
CN112146158A true CN112146158A (en) 2020-12-29
CN112146158B CN112146158B (en) 2022-07-15

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EP (1) EP3757472B1 (en)
JP (1) JP6670970B1 (en)
CN (1) CN112146158B (en)

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240621A (en) * 1990-01-31 1991-08-07 Toshiba Kk Ventilating fan
JP2003232542A (en) * 2002-02-07 2003-08-22 Sanyo Electric Co Ltd Air conditioner
JP2009097774A (en) * 2007-10-16 2009-05-07 Hitachi Plant Technologies Ltd Cooling apparatus for exothermic body
CN101865236A (en) * 2010-05-17 2010-10-20 喻文武 Hydraulic damper for realizing different heterodromous speeds by arranging unidirectional damping block
CN102440089A (en) * 2009-05-28 2012-05-02 美国能量变换公司 Method and apparatus for attachment and removal of fans while in operation and without the need for tools
CN103122871A (en) * 2011-11-18 2013-05-29 镇江江大泵业科技有限公司 Reverse rotation-prevention and loosening-prevention technique of impeller nut
JP2013204835A (en) * 2012-03-27 2013-10-07 Mitsubishi Electric Corp Air conditioner
US20140150479A1 (en) * 2012-11-30 2014-06-05 Yi Qu Secondary Defrost for Heat Pumps
CN205079285U (en) * 2015-09-18 2016-03-09 浙江苏泊尔家电制造有限公司 Range hood with locking structure of taking off of impeller
CN105816255A (en) * 2016-05-30 2016-08-03 竺蔚 Electric toothbrush capable of generating magnetic water
CN106015100A (en) * 2016-07-30 2016-10-12 顺德职业技术学院 Air-conditioner draught fan
CN106322686A (en) * 2016-09-26 2017-01-11 中铁第四勘察设计院集团有限公司 Anti-vibration anti-loosening ventilating system and ventilating method
CN206017204U (en) * 2016-08-18 2017-03-15 北京超同步伺服股份有限公司 A kind of supporting construction of servomotor cooling blower
CN107044663A (en) * 2016-02-05 2017-08-15 博西华电器（江苏）有限公司 Kitchen appliance and its lampblack absorber, the automatic cleaning method of lampblack absorber
CN107676297A (en) * 2017-09-28 2018-02-09 镇江三联泵业机械成套设备有限公司 Impeller of pump anti-drop device
CN207437181U (en) * 2017-11-28 2018-06-01 四川圣锦高新科技股份有限公司 Anti-loose automotive electronics fan
CN108885018A (en) * 2016-03-31 2018-11-23 日立江森自控空调有限公司 The outdoor unit of conditioner
CN208236762U (en) * 2018-05-21 2018-12-14 中山市港联华凯电器制品有限公司 A kind of structure for preventing ceiling fan from falling and with the ceiling fan for preventing from falling structure
CN109028202A (en) * 2018-05-21 2018-12-18 佛山市顺德区美的洗涤电器制造有限公司 Range hood and its method, cleaning device and storage medium
CN208398345U (en) * 2018-07-04 2019-01-18 维谛技术有限公司 It is a kind of for installing the composite roof truss structure of the blower fan module of air conditioner in machine room
CN109631247A (en) * 2018-11-13 2019-04-16 青岛海尔空调电子有限公司 Design method is evaded in air conditioner and its resonance

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63183335A (en) * 1987-01-26 1988-07-28 Hitachi Ltd Air conditioner
JPH0942192A (en) * 1995-08-03 1997-02-10 Hiroichi Shintani Electric fan
JP2004101154A (en) * 2002-09-13 2004-04-02 Mitsubishi Electric Corp Air-conditioner operating method, and air-conditioner
JP2007155270A (en) * 2005-12-07 2007-06-21 Sharp Corp Air conditioner
KR20080071720A (en) * 2007-01-31 2008-08-05 삼성전자주식회사 Apparatus for removing dust of a heat exchanger in air conditioner and method thereof
CN102278800B (en) * 2010-06-09 2014-12-24 乐金电子(天津)电器有限公司 Automatic fault clearing method for outdoor unit of variable-frequency air conditioner
CN102536871B (en) * 2010-12-31 2015-01-07 台达电子工业股份有限公司 Fan system, fan control circuit and fan control method
JP5677233B2 (en) * 2011-08-10 2015-02-25 三菱電機株式会社 Outdoor unit and refrigeration cycle apparatus including the outdoor unit
KR102436704B1 (en) * 2015-03-23 2022-08-25 엘지전자 주식회사 Fan motor driving device and air conditioner including the same
CN104896613B (en) * 2015-06-25 2018-07-17 珠海格力电器股份有限公司 Air condensing units and air conditioning unit
CN105333576B (en) * 2015-11-20 2018-05-01 广东美的制冷设备有限公司 Outdoor fan of air conditioner control method and device
CN105805901A (en) * 2016-05-13 2016-07-27 广东美的制冷设备有限公司 Operation control method and device for air conditioner

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240621A (en) * 1990-01-31 1991-08-07 Toshiba Kk Ventilating fan
JP2003232542A (en) * 2002-02-07 2003-08-22 Sanyo Electric Co Ltd Air conditioner
JP2009097774A (en) * 2007-10-16 2009-05-07 Hitachi Plant Technologies Ltd Cooling apparatus for exothermic body
CN102440089A (en) * 2009-05-28 2012-05-02 美国能量变换公司 Method and apparatus for attachment and removal of fans while in operation and without the need for tools
CN101865236A (en) * 2010-05-17 2010-10-20 喻文武 Hydraulic damper for realizing different heterodromous speeds by arranging unidirectional damping block
CN103122871A (en) * 2011-11-18 2013-05-29 镇江江大泵业科技有限公司 Reverse rotation-prevention and loosening-prevention technique of impeller nut
JP2013204835A (en) * 2012-03-27 2013-10-07 Mitsubishi Electric Corp Air conditioner
US20140150479A1 (en) * 2012-11-30 2014-06-05 Yi Qu Secondary Defrost for Heat Pumps
CN205079285U (en) * 2015-09-18 2016-03-09 浙江苏泊尔家电制造有限公司 Range hood with locking structure of taking off of impeller
CN107044663A (en) * 2016-02-05 2017-08-15 博西华电器（江苏）有限公司 Kitchen appliance and its lampblack absorber, the automatic cleaning method of lampblack absorber
CN108885018A (en) * 2016-03-31 2018-11-23 日立江森自控空调有限公司 The outdoor unit of conditioner
CN105816255A (en) * 2016-05-30 2016-08-03 竺蔚 Electric toothbrush capable of generating magnetic water
CN106015100A (en) * 2016-07-30 2016-10-12 顺德职业技术学院 Air-conditioner draught fan
CN206017204U (en) * 2016-08-18 2017-03-15 北京超同步伺服股份有限公司 A kind of supporting construction of servomotor cooling blower
CN106322686A (en) * 2016-09-26 2017-01-11 中铁第四勘察设计院集团有限公司 Anti-vibration anti-loosening ventilating system and ventilating method
CN107676297A (en) * 2017-09-28 2018-02-09 镇江三联泵业机械成套设备有限公司 Impeller of pump anti-drop device
CN207437181U (en) * 2017-11-28 2018-06-01 四川圣锦高新科技股份有限公司 Anti-loose automotive electronics fan
CN208236762U (en) * 2018-05-21 2018-12-14 中山市港联华凯电器制品有限公司 A kind of structure for preventing ceiling fan from falling and with the ceiling fan for preventing from falling structure
CN109028202A (en) * 2018-05-21 2018-12-18 佛山市顺德区美的洗涤电器制造有限公司 Range hood and its method, cleaning device and storage medium
CN208398345U (en) * 2018-07-04 2019-01-18 维谛技术有限公司 It is a kind of for installing the composite roof truss structure of the blower fan module of air conditioner in machine room
CN109631247A (en) * 2018-11-13 2019-04-16 青岛海尔空调电子有限公司 Design method is evaded in air conditioner and its resonance

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
谢昌明，朴宜勇，陈爱群: "《机电式家用电器原理及维修技术》", 30 November 1990 *
陈仁祥; 周君; 杨黎霞; 母芝验; 袁静: "振动敏感特征与流形学习的风机基座螺栓松动程度诊断", 《计算机集成制造系统 》 *

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