JPS5720592A - Protector for blower in air-conditioner & etc. - Google Patents

Protector for blower in air-conditioner & etc.

Info

Publication number
JPS5720592A
JPS5720592A JP9509180A JP9509180A JPS5720592A JP S5720592 A JPS5720592 A JP S5720592A JP 9509180 A JP9509180 A JP 9509180A JP 9509180 A JP9509180 A JP 9509180A JP S5720592 A JPS5720592 A JP S5720592A
Authority
JP
Japan
Prior art keywords
safety guard
leaving
extrusion
trembling
vibration
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
JP9509180A
Other languages
Japanese (ja)
Inventor
Hitoshi Yamashita
Akio Suzuki
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 JP9509180A priority Critical patent/JPS5720592A/en
Publication of JPS5720592A publication Critical patent/JPS5720592A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To reduce the manufacturing cost of a safety guard by forming a large number of cutout arcuate apertures radially extending in a sheet material, leaving a center disc portion therein, and then carrying out extrusion with using an extrusion die, and to maintain a regular quality by eliminating welded portions from the safety guard so as to prevent generation of trembling sounds caused by vibration.
CONSTITUTION: A safety guard 7a is composed of louvers 7b which form, as a whole, a generally convex shape but define an inverted concave coned shaoe in the center portion of the safety guard 7a. Moreover, since the safety guard 7a has no welded portion, there is no problem of leaving unwelded portions. Therefore, trembling sounds due to vibration are hard to generate during operation of the blower 4. Further, with this arrangement which can be obtained in such a manner that a large number of arcuate apertures 7d radially extending are formed in a sheet material, leaving a center disc portion therein, and then extrusion is carried out with using an extrusion die 10, the safety guard can be manufactured through less manufacturing proccess steps at reasonable costs.
COPYRIGHT: (C)1982,JPO&Japio
JP9509180A 1980-07-14 1980-07-14 Protector for blower in air-conditioner & etc. Pending JPS5720592A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9509180A JPS5720592A (en) 1980-07-14 1980-07-14 Protector for blower in air-conditioner & etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9509180A JPS5720592A (en) 1980-07-14 1980-07-14 Protector for blower in air-conditioner & etc.

Publications (1)

Publication Number Publication Date
JPS5720592A true JPS5720592A (en) 1982-02-03

Family

ID=14128235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9509180A Pending JPS5720592A (en) 1980-07-14 1980-07-14 Protector for blower in air-conditioner & etc.

Country Status (1)

Country Link
JP (1) JPS5720592A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62173366A (en) * 1986-01-24 1987-07-30 Fujitsu Ltd Diagnostic system for electromagnetic valve drive circuit of antiskid device
JPS62155060U (en) * 1986-03-25 1987-10-01

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837148B1 (en) * 1969-07-22 1973-11-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837148B1 (en) * 1969-07-22 1973-11-09

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62173366A (en) * 1986-01-24 1987-07-30 Fujitsu Ltd Diagnostic system for electromagnetic valve drive circuit of antiskid device
JPH0466741B2 (en) * 1986-01-24 1992-10-26 Fujitsu Kk
JPS62155060U (en) * 1986-03-25 1987-10-01
JPH0348926Y2 (en) * 1986-03-25 1991-10-18

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