CA2015509A1 - Method and apparatus for controlling a blower motor in an air handling system - Google Patents

Method and apparatus for controlling a blower motor in an air handling system

Info

Publication number
CA2015509A1
CA2015509A1 CA2015509A CA2015509A CA2015509A1 CA 2015509 A1 CA2015509 A1 CA 2015509A1 CA 2015509 A CA2015509 A CA 2015509A CA 2015509 A CA2015509 A CA 2015509A CA 2015509 A1 CA2015509 A1 CA 2015509A1
Authority
CA
Canada
Prior art keywords
signal
preselected
motor
flow rate
blower
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
CA2015509A
Other languages
French (fr)
Other versions
CA2015509C (en
Inventor
Rajendra K. Shah
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of CA2015509A1 publication Critical patent/CA2015509A1/en
Application granted granted Critical
Publication of CA2015509C publication Critical patent/CA2015509C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S236/00—Automatic temperature and humidity regulation
    • Y10S236/09—Fan control

Abstract

Apparatus and method for controlling a a motor having a stationary assembly with a plurality of winding stages for carrying motor current and further having a rotatable assembly in driving relation with a blower in an air handling system. The apparatus provides control of the blower speed over a range of static pressure variations to maintain relatively constant preselected rate of air flow in the system. The apparatus receives a preselected flow rate signal representing the preselected air flow rate. A
microprocessor, responsive to both the preselected flow rate signal and a speed signal, generates a desired torque signal which is a function of both the preselected flow rate signal and the speed signal. The desired torque signal is compared to a signal representing motor torque and a comparison signal representing the comparison is generated. An IC control applies a motor voltage to one or more of the winding stages at a time in accordance with the comparison signal and commutatss the winding stages in a preselected sequence to rotate the rotatable assembly. As a result, the blower is driven by varying the motor torque according to motor speed to maintain substantially constant air flow in the system at the preselected rate substantially independent of variations in the static pressure.
CA002015509A 1989-07-26 1990-04-26 Method and apparatus for controlling a blower motor in an air handling system Expired - Lifetime CA2015509C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/385,664 US4978896A (en) 1989-07-26 1989-07-26 Method and apparatus for controlling a blower motor in an air handling system
US385,664 1989-07-26

Publications (2)

Publication Number Publication Date
CA2015509A1 true CA2015509A1 (en) 1991-01-26
CA2015509C CA2015509C (en) 1998-06-23

Family

ID=23522362

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002015509A Expired - Lifetime CA2015509C (en) 1989-07-26 1990-04-26 Method and apparatus for controlling a blower motor in an air handling system

Country Status (2)

Country Link
US (1) US4978896A (en)
CA (1) CA2015509C (en)

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Also Published As

Publication number Publication date
CA2015509C (en) 1998-06-23
US4978896A (en) 1990-12-18

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