JPH06294565A - Cooler - Google Patents

Abstract

PURPOSE:To enable the working out of a preventive maintenance method to be employed by achieving a forecasting of time to a system down in case of the leakage of water. CONSTITUTION:This cooler is made up of a tank 3, a pump and a heat exchanger. The tank 3 is provided with a float switch 8 with the position thereof varying according to a water level. In case of the leakage of water, a water level of the tank 3 lowers and the float switch 8 also moves down with the water levels A, B, C and D accordingly. Here, time is forecast down to the water level D in the stoppage of a system from the time covered until the water level lowers from the B to C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various electronic equipment cooling devices which have a great effect when the system goes down, including cooling of a computer.

[0002]

2. Description of the Related Art In the prior art, for example, Japanese Unexamined Patent Application Publication No. 4-10983.
Although there is a system in which a leak detector using a water leak sensor and a liquid level gauge are combined as seen in Japanese Patent Publication No. JP-A-2004-242242, this system has a drawback that it is expensive and control is complicated because two detectors are combined. In addition, the time to the system down cannot be predicted.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide means capable of preventive maintenance so as not to bring down the system, which is the most important factor in operating a computer.

[0004]

In order to achieve the above object, the present invention calculates leak rate, predicts / displays time to system stop, and takes preventive measures by the time to system stop. Create conservation measures.

[0005]

According to the present invention, it is possible to predict the time taken to reach the system stop water level from the amount of change per hour of the water level gauge provided in the tank when water leaks.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment according to the present invention will be described below with reference to FIGS.
3 and FIG.

FIG. 1 shows a block diagram of a cooling device according to the invention. The cooling device 2 is composed of a tank 3, a pump 4 and a heat exchanger 5. Now, the cold water 6 that has come out of the cooling device 2 enters the computer 1, and the cold water 6 that has absorbed the heat generated by the computer here returns to the cooling device 2 and passes through the tank 3 and the pump 4 to the heat exchanger. 5, the heat is exchanged by the cooling water 7, and the heat is sent to the computer 1 again.

Next, FIG. 2 shows the internal structure of the tank. The tank 3 is provided with a float switch 8 whose position changes depending on the water level. Normally, there is a float switch in the A position, but if the cold water system of the computer leaks, the water level will drop to B, C, D, and the float switch will move to the B, C, D position accordingly. . Hereinafter, the control method at the time of water leakage will be described in detail. First, when water leakage occurs and the water level drops to B, the float switch 8 sends a signal 1 to the control unit, issues a water leakage alarm, and starts counting the timer. Next, when the water level drops to C, the float switch 8 sends a signal 2 to the control unit, and the control unit
With this signal, the timer is up, and as shown in FIG. 3, the time Δt required to decrease from the water level B to the water level C is calculated. Assuming that water leakage progresses from the water level B to the water level C thereafter, the time Δ until the system stop water level D is reached.
Calculate T and display it. As a result, it can be predicted how long the system outage will occur. Finally, when the water level drops to D, the float switch 8 sends a signal 3 to the control unit, and the control unit shuts down the system.

[0009]

According to the present invention, it is possible to predict the time until the system goes down when there is a water leak, and therefore it is possible to formulate a preventive maintenance method to be taken.

Further, since the water leakage sensor found in the prior art is not required, the structure is simple and the economy is high.

[Brief description of drawings]

FIG. 1 is a block diagram of a cooling device.

FIG. 2 is an explanatory diagram of a tank and a float switch.

FIG. 3 is a characteristic diagram showing a change in water level at the time of water leakage and the lapse of time.

[Explanation of symbols]

1 ... Computer, 2 ... Cooling device, 3 ... Tank, 4 ... Pump, 5 ... Heat exchanger, 6 ... Cold water, 7 ... Cooling water, 8 ... Float switch.

Claims (1)

[Claims] 1. A cooling device including a pump, a heat exchanger, and a tank, wherein a float switch for detecting the water level is provided in the tank, and when water leaks from the cold water system, the speed of the water leak can be controlled by the position of the float switch. A cooling device that enables preventive maintenance by calculating and predicting the time to system shutdown.