US20090110562A1 - Variable frequency control module for an AC compressor in an air conditioning system - Google Patents

Variable frequency control module for an AC compressor in an air conditioning system Download PDF

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Publication number
US20090110562A1
US20090110562A1 US12/157,851 US15785108A US2009110562A1 US 20090110562 A1 US20090110562 A1 US 20090110562A1 US 15785108 A US15785108 A US 15785108A US 2009110562 A1 US2009110562 A1 US 2009110562A1
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United States
Prior art keywords
signal
unit
compressor
control module
variable frequency
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.)
Abandoned
Application number
US12/157,851
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English (en)
Inventor
Hsiao-Feng Huang
Yi-Jhu Chan
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.)
YAN YANG HIGH Tech Co Ltd
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YAN YANG HIGH Tech Co Ltd
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Filing date
Publication date
Application filed by YAN YANG HIGH Tech Co Ltd filed Critical YAN YANG HIGH Tech Co Ltd
Assigned to YAN YANG HIGH TECHNOLOGY CO., LTD. reassignment YAN YANG HIGH TECHNOLOGY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHAN, YI-JHU, HUANG, HSIAO-FENG
Publication of US20090110562A1 publication Critical patent/US20090110562A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1201—Rotational speed of the axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/10—Inlet temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/11—Outlet temperature

Definitions

  • the invention relates to a variable frequency control module, more particularly to a variable frequency control module for an AC compressor in an air conditioning system.
  • a conventional air conditioner 1 is shown to include a temperature detector 12 for detecting ambient temperature, an operating unit 13 operable so as to set a target temperature, and a processor 11 coupled to the temperature detector 12 and the operating unit 13 for controlling a rotary speed of a compressor 14 based on the ambient temperature detected by the temperature detector 12 and the target temperature set by the operating unit 13 .
  • the processor 11 activates the compressor 14 to operate at a constant rotary speed until the ambient temperature detected by the temperature detector 12 decreases to a first temperature lower than the target temperature
  • the processor 11 deactivates the compressor 14 until the ambient temperature detected by the temperature detector 12 rises to a second temperature higher than the target temperature.
  • a conventional variable frequency air conditioner wherein a DC compressor is controlled by a frequency converter using voltage-controlled modulation such that a rotary speed of the DC compressor changes with variation of a duty cycle of a voltage signal supplied to the DC compressor.
  • a frequency converter cannot be applied to an AC compressor suitable for high-power output.
  • an object of the present invention is to provide a variable frequency control module for an AC compressor in an air conditioning system that can overcome the aforesaid drawbacks of the prior art.
  • variable frequency control module for controlling an AC compressor in an air conditioning system.
  • the variable frequency control module comprises:
  • an operating unit operable so as to output an input signal corresponding to a target temperature
  • FIG. 2 is a schematic circuit block diagram illustrating the first preferred embodiment of a variable frequency control module for an AC compressor in an air conditioning system according to the present invention.
  • FIG. 3 is a schematic circuit block diagram illustrating the second preferred embodiment of a variable frequency control module for an AC compressor in an air conditioning system according to the present invention.
  • variable frequency control module 2 for controlling an AC compressor 15 , such as a three-phase AC compressor, in an air conditioning system according to the present invention is shown to include a temperature detecting unit 21 , an operating unit 22 , a processing unit 23 , an encoding unit 24 , a frequency converting unit 25 , and a display unit 26 .
  • the processing unit 23 is coupled to the temperature detecting unit 21 and the operating unit 22 for receiving the detecting signal and the input signal therefrom, and outputs a control signal corresponding to a difference between the ambient temperature and the target temperature based on the detecting signal and the input signal.
  • the frequency converting unit 25 is coupled to the encoding unit 24 for receiving the encoded signal therefrom, generates a driving signal having a frequency corresponding to the encoded signal from the encoding unit 24 , and is adapted to output the driving signal to the AC compressor 15 so that the AC compressor 15 is operated at a rotary speed based on the driving signal from the frequency converting unit 25 .
  • the processing unit 23 can be configured by a software program so that the rotary speed of the AC compressor 15 is graded with the difference between the ambient temperature and the target temperature. For example, when the difference between the ambient temperature and the target temperature is greater than 10° C., the rotary speed of the AC compressor 15 is controlled at a first rotary speed (S 1 ). When the difference between the ambient temperature and the target temperature ranges from 8° C. to 10° C., the rotary speed of the AC compressor 15 is controlled at a second rotary speed (S 2 ). When the difference between the ambient temperature and the target temperature ranges from 6° C. to 8° C., the rotary speed of the AC compressor 15 is controlled at a third rotary speed (S 3 ).
  • the rotary speed of the AC compressor 15 is controlled at a fourth rotary speed (S 4 ).
  • the rotary speed of the AC compressor 15 is controlled at a fifth rotary speed (S 5 ).
  • the rotary speed of the AC compressor 15 is controlled at a sixth rotary speed (S 6 ).
  • the rotary speed of the AC compressor 15 is controlled to be zero, i.e., the AC compressor 15 is deactivated.
  • the AC compressor 15 is deactivated.
  • FIG. 3 illustrates the second preferred embodiment of a variable frequency control module 2 ′ for controlling an AC compressor 15 according to this invention, which is a modification of the first preferred embodiment.
  • the operating unit 22 ′ includes a plurality of used-operated switches 221 .
  • the display unit 26 ′ includes a liquid crystal display panel 261 for displaying the ambient temperature thereon, and a set of indicating lamps 262 for indicating information pertinent to the rotary speed of the AC compressor 15 .
  • variable frequency control module 2 , 2 ′ of the present invention The following are some of the advantages attributed to the variable frequency control module 2 , 2 ′ of the present invention:
  • the rotary speed of the AC compressor 15 is a relatively lowest rotary speed, i.e., the sixth rotary speed (S 6 ) in the aforesaid example, and the difference between the ambient temperature and the target temperature can be constantly maintained within a desired narrow range. Therefore, constant temperature control can be achieved.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
US12/157,851 2007-10-26 2008-06-13 Variable frequency control module for an AC compressor in an air conditioning system Abandoned US20090110562A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW096140366 2007-10-26
TW096140366A TW200919935A (en) 2007-10-26 2007-10-26 Constant-temperature frequency-converting module suitable for air-conditioning system

Publications (1)

Publication Number Publication Date
US20090110562A1 true US20090110562A1 (en) 2009-04-30

Family

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Family Applications (1)

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US12/157,851 Abandoned US20090110562A1 (en) 2007-10-26 2008-06-13 Variable frequency control module for an AC compressor in an air conditioning system

Country Status (2)

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US (1) US20090110562A1 (enrdf_load_stackoverflow)
TW (1) TW200919935A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003377A (zh) * 2010-11-23 2011-04-06 北京时代科仪新能源科技有限公司 一种空压机控制装置及方法
CN103343743A (zh) * 2013-07-16 2013-10-09 海信（北京）电器有限公司 一种变频与定速压缩机的自动识别方法及冰箱
US8863535B2 (en) 2011-10-07 2014-10-21 Delta Electronics, Inc. Air conditioning apparatus and control method thereof
CN105864970A (zh) * 2016-04-12 2016-08-17 青岛海尔空调器有限总公司 一种用于调整空调的消耗功率的方法及装置
CN106091272A (zh) * 2016-06-17 2016-11-09 广东美的制冷设备有限公司 变频空调器的频率调节方法及装置
CN107039950A (zh) * 2017-03-27 2017-08-11 珠海凌达压缩机有限公司 压缩机保护系统、空调器及压缩机保护系统控制的方法
WO2018094912A1 (zh) * 2016-11-25 2018-05-31 广东美的制冷设备有限公司 压缩机的控制方法、装置和家用电器
CN112268349A (zh) * 2020-10-26 2021-01-26 珠海格力电器股份有限公司 空调及其控制方法、计算机可读存储介质
US20240301882A1 (en) * 2021-04-28 2024-09-12 Hitachi Industrial Equipment Systems Co., Ltd. Compressor

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682648A (en) * 1982-12-29 1987-07-28 Morton Fried Temperature offset control system
US4891953A (en) * 1988-02-01 1990-01-09 Mitsubishi Denki Kabushiki Kaisha Control device for an air conditioner with floor temperature sensor
US5005365A (en) * 1988-12-02 1991-04-09 Inter-City Products Corporation (Usa) Thermostat speed bar graph for variable speed temperature control system
US5107685A (en) * 1989-12-05 1992-04-28 Kabushiki Kaisha Toshiba Air conditioning system having a control unit for fine adjustment of inverter input current
US5385297A (en) * 1991-10-01 1995-01-31 American Standard Inc. Personal comfort system
US5673568A (en) * 1994-06-03 1997-10-07 Kabushiki Kaisha Toshiba Apparatus and method for controlling an air conditioner
US6508072B1 (en) * 1998-10-26 2003-01-21 Toshiba Carrier Corporation Air conditioner outdoor unit drive control unit
US20050210897A1 (en) * 2004-03-26 2005-09-29 Mitsuyo Oomura Vehicular air-conditioner
US7096681B2 (en) * 2004-02-27 2006-08-29 York International Corporation System and method for variable speed operation of a screw compressor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682648A (en) * 1982-12-29 1987-07-28 Morton Fried Temperature offset control system
US4891953A (en) * 1988-02-01 1990-01-09 Mitsubishi Denki Kabushiki Kaisha Control device for an air conditioner with floor temperature sensor
US5005365A (en) * 1988-12-02 1991-04-09 Inter-City Products Corporation (Usa) Thermostat speed bar graph for variable speed temperature control system
US5107685A (en) * 1989-12-05 1992-04-28 Kabushiki Kaisha Toshiba Air conditioning system having a control unit for fine adjustment of inverter input current
US5385297A (en) * 1991-10-01 1995-01-31 American Standard Inc. Personal comfort system
US5673568A (en) * 1994-06-03 1997-10-07 Kabushiki Kaisha Toshiba Apparatus and method for controlling an air conditioner
US6508072B1 (en) * 1998-10-26 2003-01-21 Toshiba Carrier Corporation Air conditioner outdoor unit drive control unit
US7096681B2 (en) * 2004-02-27 2006-08-29 York International Corporation System and method for variable speed operation of a screw compressor
US20050210897A1 (en) * 2004-03-26 2005-09-29 Mitsuyo Oomura Vehicular air-conditioner

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102003377A (zh) * 2010-11-23 2011-04-06 北京时代科仪新能源科技有限公司 一种空压机控制装置及方法
US8863535B2 (en) 2011-10-07 2014-10-21 Delta Electronics, Inc. Air conditioning apparatus and control method thereof
CN103343743A (zh) * 2013-07-16 2013-10-09 海信（北京）电器有限公司 一种变频与定速压缩机的自动识别方法及冰箱
CN105864970A (zh) * 2016-04-12 2016-08-17 青岛海尔空调器有限总公司 一种用于调整空调的消耗功率的方法及装置
CN106091272A (zh) * 2016-06-17 2016-11-09 广东美的制冷设备有限公司 变频空调器的频率调节方法及装置
WO2018094912A1 (zh) * 2016-11-25 2018-05-31 广东美的制冷设备有限公司 压缩机的控制方法、装置和家用电器
CN107039950A (zh) * 2017-03-27 2017-08-11 珠海凌达压缩机有限公司 压缩机保护系统、空调器及压缩机保护系统控制的方法
CN112268349A (zh) * 2020-10-26 2021-01-26 珠海格力电器股份有限公司 空调及其控制方法、计算机可读存储介质
US20240301882A1 (en) * 2021-04-28 2024-09-12 Hitachi Industrial Equipment Systems Co., Ltd. Compressor

Also Published As

Publication number Publication date
TWI337447B (enrdf_load_stackoverflow) 2011-02-11
TW200919935A (en) 2009-05-01

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AS Assignment

Owner name: YAN YANG HIGH TECHNOLOGY CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HUANG, HSIAO-FENG;CHAN, YI-JHU;REEL/FRAME:021183/0371

Effective date: 20080421

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION