JPS64369Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for storing warm water washer fluid that is sprayed to defrost the windshield.

As is well known, in winter or in cold regions where the outside temperature is low, the windshield surface of automobiles is often covered with frost, blocking visibility and making it difficult to drive safely and normally. Therefore, in order to thaw the frost on the windshield, it is best to pour boiling water or hot water on it, so various devices have been devised that heat the washer liquid using an electric heater using an on-board battery. There is a method of heating the liquid by adding a heater in a hot water chamber provided in the middle of the washer liquid waterway or in an already equipped container. In addition, some hot water chambers are equipped with a thermostat to ensure that the temperature is always maintained at a predetermined temperature. However, in the former case, the heater has to be activated each time, and if the heater capacity is large, the burden on the battery will be large, and conversely, if the heater capacity is small, it will take a long time to get hot water. In the latter case, even if a predetermined temperature can be maintained at all times using a thermostat, there is a problem in that the battery is consumed considerably.

This idea was created by focusing on the above-mentioned problems, such as how to generate hot water using a heater with a small capacity, how to reduce battery consumption, and how to extend the temperature maintenance time of hot water. Focusing on this, the washer fluid stored in the container is heated to a predetermined temperature only when the onboard generator is operating, and the hot water is kept warm with a nearly perfect insulation structure, thereby reducing the burden on the battery. The purpose is to prevent this from happening.

An embodiment of this invention will be described below based on the drawings.

First, I will explain the configuration.

The outer casing 1 of the washer liquid W has a cap-type lid 4 attached to the main body 2 via a ring-shaped gasket 3, a heat-retaining band 5 affixed to the entire inner surface of the main body 2, and the top and bottom of the casing 1 are connected by a snap lock 6. .

A thermos flask-shaped container 8 equipped with a vacuum band 7 has its bottom supported by a rubber cushion 9, and its side surfaces are held by a ring-shaped packing 10 fitted and fixed inside the upper end of the main body 2 to prevent heat radiation.

A rubber lid 11 is attached to the inner surface of the lid 4 as an elastic lid having heat insulating properties, and is in close contact with the wide opening 8a of the container 8. Then, the top part 4a of the lid body 4
The elongated part 12a of the suction pipe 12, which has an angular inverted J shape and sucks out the washer liquid W, is located in the center.
An electric heater 14 equipped with thermostats 13 at required locations and a flow switch 15 pass through the top portion 4a, the heat insulator 5, and the rubber lid 11 to open the container 8.
They are inserted deeply into the interior, and each has the necessary piping and wiring. Furthermore, a liquid injection pipe 17 with a lid 16 is provided at a suitable position on the top portion 4a, and an air intake valve 18 and a pressure regulating valve 19 are also provided.

The electric pump 20 is fixed to the side surface near the bottom of the outer casing 1, and its suction pipe 21 is connected to the suction pipe 12.
It is connected to the short part 12b of the
is sent to the injection port (not shown), but the outer casing 1 of the suction pipe 12
External part and suction pipe 21, electric pump 2
0, the discharge pipes 23 are each provided with a heat insulating exterior 24.

Next, electric wiring will be explained with reference to FIG.

The system for washer liquid W injection is battery B →
Wired in the order of washer switch Ws → electric pump 20 → battery B, and the system for managing the washer fluid W is from battery B → engine ignition switch.
It consists of wiring from Es → a contact 15a of flow switch 15 → manual heater switch Hs → thermostat 13 → electric heater 14 → battery B, and wiring from b contact 15b of flow switch 15 → warning light L → battery B. There is.

The liquid level confirmation device K has two contacts a and b, and a flow switch 15 that applies current to the b contact 15b when the liquid level is insufficient, and to the a contact 15a otherwise.
and a warning light L that indicates a lack of liquid.

Next, we will discuss the effect.

During operation of the engine, that is, only when the generator is in operation, an electric heater 14 equipped with a thermostat 13 is installed in a completely sealed container 8 that is insulated by a heat insulation zone 5 and a vacuum zone 7. The washer liquid W is heated to a predetermined temperature to make hot water, which is stored as it is in the container 8 to keep it warm. At this time, if the pressure inside the container 8 increases due to heating, the pressure regulating valve 19 releases the excess pressure to the atmosphere.

Since the container 8 is insulated and completely airtight, the temperature of the heated washer fluid W will drop very little even if it is left for a long time. When spraying onto the windshield, since the hot water is used as it is, the frost can be quickly and easily removed, and there is no need to operate the electric heater 14 each time as in the conventional case.

At this time, when the liquid level decreases as the washer liquid W is consumed and the pressure inside the container 8 decreases because it is completely sealed, the air intake valve 18 introduces outside air based on the pressure difference with the atmosphere to maintain balance. However, since the valve 18 is always closed and shut off from outside air, the heat inside the container 8 does not escape to the outside.

Further, when the washer liquid W is heated next time, the temperature decreases little, and since the container 8 has sufficient heat retention, the predetermined temperature is quickly reached and the power consumption of the electric heater 14 is also small. Moreover, since battery B does not directly participate in heating, its consumption is reduced.

Next, electrical operations will be described based on FIG.

By turning the engine ignition switch Es "ON", the engine is started and the generator starts operating at the same time, current flows from the ignition switch Es to the fluid level confirmation device K connected in series, and the nuclear confirmation device K
When the flow switch 15 does not sense a shortage of liquid, that is, when current is flowing through the a contact 15a by the flow switch 15, the heater manual switch Hs connected in series with the flow switch 15 (normally "ON") is activated.
(Set it to "OFF" as necessary, such as when the voltage drops or when the electric heater 14 is not in use)
When current flows through the thermostat 13 and the heater manual switch Hs is set to "ON", the thermostat 13
A current flows through the thermostat 13, which detects the temperature of the liquid and turns on the electric heater 14 only when the temperature is below a predetermined temperature.
Electric current flows through the liquid and generates heat, increasing the temperature of the liquid. When the liquid temperature reaches a predetermined temperature, the thermostat 13 cuts off the current and stops generating heat.

If necessary, turn the washstand switch Ws to "ON".
The electric pump 20 is started to pump the washing liquid W
is sprayed.

Furthermore, when the liquid level confirmation device K senses a lack of liquid level, that is, when the flow switch 15 causes current to flow through the B contact, the warning light L lights up to notify you of the lack of liquid level, and the A contact is turned OFF. '', the current flowing to the electric heater 14 is cut off, preventing dry cooking.

Furthermore, when the washer liquid W is supplemented from the liquid injection tube 17, the liquid level rises, so the b contact 15b turns OFF and the warning light L goes out, and at the same time the a contact 15a turns ``ON'' and current flows. Return to normal state.

In addition, as mentioned above, the heater manual switch
By setting Hs to "OFF", the current flowing to the electric heater 14 can be cut off, but even at this time, the liquid level confirmation device K operates normally.

This invention can be applied not only to automobiles but also to motor boats, ships, etc., and may also be used for cleaning purposes in addition to defrosting.

As explained above, this idea uses a container equipped with a vacuum zone to heat the washer liquid and store hot water, and also has an insulated and completely sealed structure, making it possible to maintain the liquid temperature for a long time. When in use, not only can you always spray warm water to defrost the windshield, but you can also quickly raise the temperature of the washer fluid because the difference in temperature from the predetermined fluid temperature is small. In addition, the engine ignition switch is interposed in the heating circuit to send current only when the generator is operating, so there is no load on the battery, which reduces battery consumption. This has the effect of being extremely advantageous, especially in winter and in cold regions where battery consumption is severe.

Furthermore, since warm water can be sprayed for normal windshield cleaning, there is also the advantage that the cleaning power is large and suitable.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the main parts of this invention, and FIG. 2 is an explanatory wiring diagram of the electrical system. W... Washer fluid, Es... Engine ignition switch, 5... Heat retention zone, 7... Vacuum zone, 8... Container, 11...
Rubber lid, 14... Electric heater, 16... Lid, 17...
Liquid injection pipe, 18...air suction valve, 19...pressure regulating valve.

Claims (1)

[Scope of utility model registration request] In a device for injecting washer fluid onto a windshield, a container for storing washer fluid is equipped with a vacuum band and is surrounded by a heat insulating band, and the container is equipped with a liquid injection pipe with a lid, an air suction valve, and a pressure regulating valve. The container is completely sealed with a lid having an elastic lid, and an engine ignition switch is provided in the circuit that passes through the lid, the insulation zone, and the lid to an electric heater installed inside the container. A thermal storage hot water washer fluid device.