JPS5686809A - Air flow rate controller for car air conditioner - Google Patents

Air flow rate controller for car air conditioner

Info

Publication number
JPS5686809A
JPS5686809A JP16149779A JP16149779A JPS5686809A JP S5686809 A JPS5686809 A JP S5686809A JP 16149779 A JP16149779 A JP 16149779A JP 16149779 A JP16149779 A JP 16149779A JP S5686809 A JPS5686809 A JP S5686809A
Authority
JP
Japan
Prior art keywords
flow rate
air flow
audible frequencies
time constants
foreign
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.)
Pending
Application number
JP16149779A
Other languages
Japanese (ja)
Inventor
Yasuo Kanehata
Kunihiro Noto
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 Ltd
Original Assignee
Hitachi Ltd
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 Ltd filed Critical Hitachi Ltd
Priority to JP16149779A priority Critical patent/JPS5686809A/en
Publication of JPS5686809A publication Critical patent/JPS5686809A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00828—Ventilators, e.g. speed control

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE:To perform high efficiency, low heat generation, foreign noise-free, and quiet air flow rate regulation by setting the chopper frequency of a chopper system air flow rate controller outside the audible frequencies. CONSTITUTION:The basic oscillation frequencies of oscillation sections OP1 and OP2 are almost determined depending upon the time constants of a capacitor C1 and resistor R7. For example, the basic oscillation frequency can be set to approximately 30kHz and the value outside the audible frequencies. For instance, by setting the basic oscillation frequency to the time constants of R7 and C1 to less than 16Hz or the time constants R10 and C3 for the smoothing section to the value which is equal to 16Hz mentioned above, the chopping system air flow rate control is enabled below the audible frequencies. This makes the foreign noise from the blower motor 1 by the chopping cotrol outside the audible frequencies. As a result, the noise cannot actually be heard as a foreign one.
JP16149779A 1979-12-14 1979-12-14 Air flow rate controller for car air conditioner Pending JPS5686809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16149779A JPS5686809A (en) 1979-12-14 1979-12-14 Air flow rate controller for car air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16149779A JPS5686809A (en) 1979-12-14 1979-12-14 Air flow rate controller for car air conditioner

Publications (1)

Publication Number Publication Date
JPS5686809A true JPS5686809A (en) 1981-07-15

Family

ID=15736186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16149779A Pending JPS5686809A (en) 1979-12-14 1979-12-14 Air flow rate controller for car air conditioner

Country Status (1)

Country Link
JP (1) JPS5686809A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181233A (en) * 1981-04-07 1982-11-08 Honeywell Inf Systems Digital phase locked loop circuit
JPS61105047A (en) * 1984-10-26 1986-05-23 Matsushita Electric Ind Co Ltd Air conditioner containing pwm inverter
JPS61210885A (en) * 1985-03-13 1986-09-19 Rengo Co Ltd Power source circuit for driving motor
US5428965A (en) * 1993-12-10 1995-07-04 Whirlpool Corporation Motor control for refrigeration appliance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181233A (en) * 1981-04-07 1982-11-08 Honeywell Inf Systems Digital phase locked loop circuit
JPS61105047A (en) * 1984-10-26 1986-05-23 Matsushita Electric Ind Co Ltd Air conditioner containing pwm inverter
JPS61210885A (en) * 1985-03-13 1986-09-19 Rengo Co Ltd Power source circuit for driving motor
US5428965A (en) * 1993-12-10 1995-07-04 Whirlpool Corporation Motor control for refrigeration appliance

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