JPH0228421Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tester for checking radiator leakage and radiator cap opening pressure of an automobile.

The radiator functions as a tank for storing the coolant that circulates within the engine, and at the same time serves to cool the coolant.

As the vehicle moves and the cooling fan rotates, air passes between the cores of the radiator, removing heat and cooling the radiator. The coolant can be reduced by evaporation due to heat, but it can also be reduced by leaks due to damaged hoses, bad joints, or corrosion in the radiator. If there is not enough coolant and the cooling power is lost, the engine will overheat and stall. Even if this coolant leakage does not occur when the engine is stopped, it may start leaking when the engine is started and the pressure increases, so it cannot be accurately checked by visual inspection alone. Therefore, pressure inspection is necessary.

Furthermore, the cooling liquid not only boils and decreases at 100°C, but also bubbles are generated, which significantly deteriorates the cooling effect.
Therefore, a radiator has a pressure valve that pushes up when the coolant gets hot and the pressure in the cooling system exceeds a specified pressure, and a pressure valve that opens when the coolant cools and becomes negative pressure, sucking in outside air. The radiator is covered with a cap that has a vacuum valve, so that the pressure inside the radiator is always kept constant.

Therefore, it is important to check whether the cap valve is functioning.

[Prior Art] Conventionally, as an instrument for checking radiators and caps, there has been an inflatable type tester that presses a pump manually to pressurize the radiator.

In this case, it is not possible to check the vacuum valve, which sucks in outside air when the pressure inside the cooling system is negative, so the inspection is done by simply pinching the valve with your fingers and pulling it.

This conventional tester also pressurizes the pump by attaching an adapter to the tip that accepts the cap being tested.

However, there are usually two types of caps, so depending on the cap being tested, the depth adjustment rubber part of the tester must be adjusted to ensure that the cap is firmly attached to the adapter. .

If this adjustment is insufficient, it may become too tight and the cap cannot be tightened, or it may become impossible to remove it after tightening, or conversely, if it is too loose, it will not be airtight, causing air leaks and pressurization. Since it fluctuates quite a bit, it is necessary to readjust it each time, which requires a lot of effort.

[Means for Solving the Problem] Therefore, the present invention aims to provide a tester that can check the vacuum valve using intake air, and can quickly perform the check without the need for adjustment by simply replacing the adapter.

To this end, the tester of the present invention consists of a replaceable adapter section, a meter section, and an electric motor pump section equipped with an intake/exhaust switching valve.

[Example] The present invention will be described with reference to schematic diagrams of embodiments that systematically illustrate the present invention.

If necessary, connect a surge tank 2 to a radiator water inlet or an adapter 1 that connects or attaches a cap, and a meter 3 is installed between them. An intake/exhaust switching valve 4 is connected to the surge tank 2, and a check valve 6 is interposed between the surge tank 2 and the electric motor pump 5.

Since the present invention is configured in this way, the radiator body can be checked by connecting the radiator water inlet and the adapter 1 of the tester of the present invention with the separately prepared connector 7, and if there is no leakage, the meter The needle does not go down.

When checking the cap next, engage the cap with adapter 1 of the tester. At this time, replace adapter 1 depending on the depth of the cap and choose one that fits tightly.

The pressure valve 8 is normally checked if it is pressurized and the specified pressure state of 0.9 kg/cm ² continues for about 6 seconds.

When the pressure exceeds the specified pressure, the valve 8 is pushed up and opened to release and control the pressure inside the radiator tank. (Figure 3 A).

In addition, the vacuum valve 9 is checked to see if it opens at a constant pressure of 0.2 cmHg or higher by inhaling air using a motor.

This valve controls a constant pressure within the cooling system (Figure 3b).

[Effects of the invention] As described above, according to the invention, when attaching the caps to be tested to the tester, delicate adjustments are required depending on the depth of each cap, which is difficult to do with conventional equipment. This eliminates the need for such re-adjustments, and since the electric motor is used, vacuum valve checks can now be performed using the same tester and with a meter.

[Brief explanation of the drawing]

FIG. 1 is a system diagram outlining the present invention. Figure 2 is a diagram of the connector. FIG. 3A is a sectional view showing the pressure valve in an open state. B is a sectional view showing the vacuum valve in an open state. 1...adapter, 2...surge tank, 3...
...Meter, 4...Switching valve, 5...Electric motor pump, 6...Check valve, 7...Connector, 8...
...pressure valve, 9...vacuum valve.

Claims (1)

[Scope of utility model registration request] A radiator consisting of a replaceable adapter that accepts a test object, a meter connected to the adapter, a motor that performs intake and exhaust, an intake/exhaust switching valve that connects to the adapter, and a connector that connects the adapter to a separately prepared radiator water inlet; cap tester.