JPS54135556A - Clogging time announcing device of filters - Google Patents

Clogging time announcing device of filters

Info

Publication number
JPS54135556A
JPS54135556A JP4343378A JP4343378A JPS54135556A JP S54135556 A JPS54135556 A JP S54135556A JP 4343378 A JP4343378 A JP 4343378A JP 4343378 A JP4343378 A JP 4343378A JP S54135556 A JPS54135556 A JP S54135556A
Authority
JP
Japan
Prior art keywords
time
counter
clogging
filter
clear
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
JP4343378A
Other languages
Japanese (ja)
Other versions
JPS5738944B2 (en
Inventor
Toshio Yamazaki
Hiroshi Ueda
Hisao Yamasato
Takeshi Kakigi
Takayuki Tsujii
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP4343378A priority Critical patent/JPS54135556A/en
Publication of JPS54135556A publication Critical patent/JPS54135556A/en
Publication of JPS5738944B2 publication Critical patent/JPS5738944B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Emergency Alarm Devices (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE: To accurately announce clogging time by counting the operation time of the main unit of an air conditioner with a digital counter, announcing the clogging of filter when the specified time is reached, generating a clear signal and clearing counter contents.
CONSTITUTION: In response to the operation of a remote controlled operation start indication key SW, SW1 goes ON to generate the clock signals for counting from a pulse generating part 18. A counter IC2 subsequently counts the clock signals and keeps integrating the operation time as far as the conditioner is being operated. When the count value thereof reaches the specified number, i.e., predetermined clogging time, its output Q14 becomes H and turns a transistor Tr ON which turn lets an LED 5 emit light, thus announcing the clogging time of the filter. The user removes and cleans the filter, then operates the clear key SW 6 for remote control. When the specified time has continued, a clear signal CL2 is generated from the circuit 20 and is supplied to the clear terminal of the counter IC2 through AND circuit AG, hence the counter IC2 is cleared.
COPYRIGHT: (C)1979,JPO&Japio
JP4343378A 1978-04-12 1978-04-12 Clogging time announcing device of filters Granted JPS54135556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4343378A JPS54135556A (en) 1978-04-12 1978-04-12 Clogging time announcing device of filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4343378A JPS54135556A (en) 1978-04-12 1978-04-12 Clogging time announcing device of filters

Publications (2)

Publication Number Publication Date
JPS54135556A true JPS54135556A (en) 1979-10-20
JPS5738944B2 JPS5738944B2 (en) 1982-08-18

Family

ID=12663554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4343378A Granted JPS54135556A (en) 1978-04-12 1978-04-12 Clogging time announcing device of filters

Country Status (1)

Country Link
JP (1) JPS54135556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211291A (en) * 1982-05-31 1983-12-08 松下電工株式会社 Operating state monitor for equipment

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59187168A (en) * 1983-04-05 1984-10-24 Seiko Epson Corp Gear and attaching and detaching of gear to shaft
JPS60161735U (en) * 1984-04-03 1985-10-26 株式会社昭和製作所 hydraulic damper
JPH0442590Y2 (en) * 1986-08-06 1992-10-08
JPS63170244U (en) * 1987-04-25 1988-11-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211291A (en) * 1982-05-31 1983-12-08 松下電工株式会社 Operating state monitor for equipment

Also Published As

Publication number Publication date
JPS5738944B2 (en) 1982-08-18

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