JPS60183623A - Forced air cooling device - Google Patents

Abstract

PURPOSE:To prevent a detrimental fault in advance by allowing a temperature detector to supervise at any time clogging of a dustproof filter so as to eliminate the need for periodic check of the said dustproof filter thereby forecasting the fault. CONSTITUTION:As the operating time of the device proceeds, clogging is progressed in the dustproof filter 10, causing temperature rise. When the temperature reaches a proper temperature T1 below a temperature T2 at which a detrimental fault might be caused, the temperature T1 is detected by a temperature detector 3, a warning signal 5 is transmitted in order to warn the clogging of the filter 10 and a display lamp 7 of a supervisory panel 6 is lighted. Thus, the maintenance cuts off the power of the device and prevents the detrimental fault in advance by replacing or cleaning the filter 10 at a time when it is possible to stop the electronic device 8, for example, at midnight, before the detrimental fault is caused. Thus, troublesome periodic check is not required.

Description

[Detailed Description of the Invention] (Technical Field) The invention relates to forced air cooling devices used in electronic equipment such as S* machines, computers, and air conditioners, and in particular, to praise the blindness of dust-proof filters. Concerning forced air cooling equipment by Shinno.

(Prior art) In general, electronic circuits in electronic devices such as m1g machines, computers, and air conditioners generate heat in the amount of kana 9 when in use. A so-called forced air cooling device is used that cools the heat generating section by forcing air through a fan. If this air is contaminated with dust and the like, the dust and the like will adhere to the heat generating parts, making them unclean and significantly impairing the air cooling effect.

To prevent this, forced air cooling systems for electronic devices usually have dust filters installed at the air intake ports.

In conventional forced air cooling systems, contamination of the dust filter is not automatically detected, and operators, maintenance personnel, etc. visually inspect it at certain opening intervals to detect the progress of clogging due to dust. If so, it was cleaned or replaced with a normal one. Therefore, conventional forced air cooling equipment has the trouble of requiring a periodic inspection of the dustproof filter every time. Conventional forced air cooling systems have a number of shortcomings, such as the risk of causing fatal damage.However, when an electronic device exceeds a predetermined temperature limit, the power to that device is cut off. I also rarely put it away. This type of forced air cooling system has the disadvantage of 1.
When a D + FI device is used in an online real-time system, it is considered to be a disadvantage in that it causes major operational problems.

(Purpose of ra-mei) The purpose of ra-mei is to avoid the inevitable situation of failure of the cooled equipment or emergency shutdown of the cooling equipment, even if the dust-proof filter is not inspected in the short term. We can provide forced air cooling equipment.

(Structure of the Invention) A forced air cooling device according to the present invention includes a dustproof filter, a fan that sends air taken in through the dustproof filter to a heat generating part and cools the heat generating part, and a fan that cools the heat generating part. @degree or AiJki Detect the strayness or tiM of the air and lI!
It should also be configured to include a device that alerts you to the size of the filter.

(Example) Next, the invention will be explained in detail with reference to Examples.

FIG. 1 is a conceptual diagram of an electronic device equipped with one embodiment of the present invention. This electronic device has a cooling fan 2 inside the housing.
is accommodated. An airflow abnormality detector 3 must be installed at a location that is often hit by the airflow sucked up by the cooling fan 2. In this embodiment, the airflow abnormality detector 3 is a temperature detector that monitors the temperature of the airflow 40 inside the housing 1 at all times or at appropriate times. The warning signal 5 is a signal sent to the temperature detector 3 and is output to give a warning when the temperature of the air flow 4 inside the rack exceeds a specified value. The monitoring panel 6 is equipped with a warning display lamp 7 that is lit by a warning (G 5).

Electronic circuit section 8. The power supply unit 9 is housed in the housing l. This is the part that generates the most heat within the housing 1. The dustproof filter 10 is used to remove dust and the like from the air L4ηλ caused by the fan 2 and to clean it. 'cl m.

#ART instruction key number 11 is used when the temperature rises abnormally due to some reason, the temperature detector 3
This signal is issued to instruct unit 9 to stop supplying 11L of electric power to I-balance circuit unit 8.

Figure 2 shows the dustproof filter 10 inside the housing shown in Figure 1.
In order to explain the process of ωm increase due to the eyes of
The relationship between the cumulative rotation time t of the fan 2 and the temperature T of the airflow around the temperature detector 3 is as follows.

In FIG. 2, -C,n□ indicates a point where the dustproof filter IO is not clogged, and the airflow temperature at that time is divided by To. In other words, the operating state during dust filter replacement or cleaning corresponds to point ng. n2 is attached to the device 11
6 shows the point that causes the failure, the temperature reaches T2, and the cumulative JA time is t2.

nl is the point at which temperature abnormality is detected and notified to the operator and maintenance personnel of the dust-proof filter lO, which causes the above-mentioned offensive/defensive failure, and that 4 degrees is Tl.
The cumulative time can be determined by tl. Cumulative time t of Koori et al.
tz is the contamination status of the airflow at the air intake of the 1st generation vessel,
Varies depending on temperature etc.

Next, the operational cost of the embodiment shown in FIG. 1 will be investigated by referring to FIG. 2.

When a new device starts operating, or immediately after replacing or cleaning the dust filter 10, the fan 2 installed in the housing 1 will operate normally, and the electronic circuit section 8 connected to the heating element and the power supply The airflow 4 that cools the section 9 flows through the casing 1 at a rate of 11111, and the temperature inside the casing is To. After that, as the cumulative operating time of the device progresses, the dustproof filter 10 becomes clogged and the temperature rises, and the temperature rises until it reaches an appropriate temperature T1 before reaching the temperature T2 that causes a fatal failure. The temperature Tl is detected by the temperature detector 3, and a warning message 5 is sent to warn the equipment operator, maintenance person, etc. of the blockage of the dust filter lO, and the monitoring board 6
The warning indicator lamp 7 mounted on the unit is lit. Dust filter 10 is clogged 9 due to lighting of warning table Volumb 7
Operators, maintenance personnel, etc. who have been warned of this may cause a fatal malfunction and operate the device at a time when it is safe to do so, such as late at night, even if the electronic device lung 8 stops operating before time t2. By turning off the power supply and replacing or cleaning the dustproof filter 10, it is possible to prevent or minimize the impact of a fatal failure due to clogging of the house filter 10.

Tip 11) If the replacement of the dustproof filter IO with a normal filter or cleaning is delayed for some reason and the airflow temperature rises to T8,
A power cut-off instruction signal 11 is sent from the m-degree detector 3 and instructs the power supply section 9 to cut off the power supply to the electronic circuit section 8, thereby forcibly avoiding the worst case scenario such as equipment burnout.

The configuration and operation of an embodiment of the present invention have been described above. According to embodiment Airflow detector (temperature detector in the example)
By timely monitoring in step 3, it is possible to predict a fatal failure caused by a clog in the dust-proof filter 10, and to prevent the failure from occurring.
-It becomes possible to prevent such occurrences.

Although the invention has been explained in detail above using one embodiment, the present invention is not limited to this embodiment and can be applied to other cases as well. First, it is possible to warn the operator, maintenance person, etc. by a sound such as a bell ringing instead of the warning line ringing, and of course it is also possible to warn both parties once. Also, the +
There is no problem in providing a round terminal or the like to give a warning to a remote location other than the warning from the R unit. Furthermore, instead of a temperature detector, a wind speed needle or a wind meter may be used as the airflow abnormality detector.

(Effects of the Invention) According to the present invention, as explained above, even if periodic inspections of dustproof filters are not performed, failures of cooled equipment and # requiring emergency power shutdown can be prevented. We can provide a forced air cooling device that can be avoided. Therefore.

If the forced air cooling device of the present invention is provided, troublesome periodic inspection of the dustproof filter is not necessarily necessary.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of an electronic device equipped with an embodiment of the invention,
FIG. 2 is a diagram conceptually showing the process of temperature rise due to the dust filter used in the embodiment shown in FIG. l...Housing, 2...Fan, 3...
...Airflow abnormality detection &F (temperature detector), 4...
・Airflow, 5...Warning signal, 6...Monitoring panel, 7...Warning indicator lamp, 8...Electronic circuit section, 9... ...Current part, 10...Bird prevention filter. 2 sides -ka

Claims (1)

[Claims] Dust filter and previous me V51! Let it pass through the a filter*! ! 7. A fan that cools the heat generating part by blowing air around the heat generating part, and a door that detects the cooling rate or the speed or position of the air to prevent clogging of the nursery filter. A strong beat 1" nitrogen cooling comparison guide equipped with a device to notify the user.