KR20060020274A - Apparatus for pre-heating washer liquid using pre-heater - Google Patents

Abstract

The present invention relates to a washer liquid preheating apparatus using a pre-heater, and more particularly, to increase the thermal efficiency by directly heating the washer liquid using the heat of the pre-heater mounted to preheat the coolant supplied to the engine in winter. The present invention relates to a washer liquid preheating apparatus using a free heater.

Washer liquid preheating apparatus using a pre-heater according to the present invention for achieving the above object is connected to a pre-heater unit consisting of a front heater, a rear heater and a pre-heater for preheating the washer liquid; A pipe is provided between the washer tank in which the washer fluid is stored and the pre-heater so that the washer fluid can be circulated, and an opening / closing valve for controlling the washer fluid is circulated, and the washer tank measures the temperature of the washer fluid. A temperature sensor is mounted, and the controller receives the temperature data from the temperature sensor and transmits necessary control signals to the on-off valve.

Preheater, washer fluid, control valve, temperature sensor

Description

Apparatus for pre-heating washer liquid using pre-heater}

1 is a view showing a conventional washer liquid preheating device.

Figure 2 is a block diagram of a washer liquid preheater using a conventional pre-heater.

Figure 3 is a block diagram of a washer liquid preheater using a pre-heater according to the present invention.

※ Explanation of symbols about main part of drawing ※

30: front heater 31: rear heater

32: pre-heater 33: wired pipe

34: wound tubing 35: washer tank

36: on-off valve 37: circulation pump

38: temperature sensor 39: control unit

40: washer pump 41: spray nozzle

The present invention relates to a washer liquid preheating apparatus using a pre-heater, and more particularly, to increase the thermal efficiency by directly heating the washer liquid using the heat of the pre-heater mounted to preheat the coolant supplied to the engine in winter. The present invention relates to a washer liquid preheating apparatus using a free heater.

In general, the wiper is used to wipe the wind shield glass to secure the view, and washer fluid is used to increase cleaning power. This washer liquid is configured to be sprayed on the glass by an injection nozzle provided on one side of the wiper. When using washer fluid in cold winters, the washer fluid sprayed on the glass often freezes and rather interferes with the driver's vision. Therefore, in order to prevent this, the washer solution is preheated and used, an example of which is shown in FIG. This preheater preheats the washer fluid using the heat of the radiator through which the high temperature coolant passes. It consists of a connection pipe (3) provided to be injected, the heat exchange line (6) connected between the washer tank (1) and the connection pipe (3) and penetrates the upper tank (5) of the radiator (4).

Another apparatus for preheating the washer liquid is shown in FIG. This uses the heat of the pre-heater, which is mounted for heating the winter cooling water, unlike the example of FIG. 1 which uses the heat of the radiator 4. Typically, indoor heating of a vehicle is only possible after some time has elapsed since the driver got on the vehicle and started the vehicle. This is because the heating device for the indoor heating of the vehicle uses the cooling water heated to a certain degree in the engine, especially when the temperature of the cooling water is too low before starting in the winter or cold area, even the startability of the vehicle is reduced.

In order to solve this problem, in a commercial vehicle such as a bus, a pre-heater using a battery mounted in the vehicle is installed regardless of whether the vehicle is started or not. The pre-heater is a device that rapidly heats the indoor air of the vehicle.Then, the on-the-fly heater heats up the cooling water of the vehicle rapidly until the vehicle's interior heating and startability improves, and then starts the engine. When the temperature rises to a predetermined temperature by the engine heat, the temperature is automatically turned off.

The preheater unit is provided with a preheater 12 having a large burner mounted therein to heat the coolant, and the coolant heated by the preheater 12 follows the front heater 10 and the rear heater 11. As it circulates, it is configured to heat by causing heat exchange with the air in the vehicle. On the circulation pipe formed by the pre-heater unit, a switching valve 13 is installed so that the heated cooling water passes through the washer tank 14 and then is connected to the circulation pipe of the pre-heater unit again through the hose 16. A check valve 17 is installed on the hose 16 to prevent the cooling water from flowing back. The pipe passing through the washer tank 14 is composed of a wound pipe 15 to improve thermal efficiency. In addition, the washer tank 14 is provided with a temperature sensor 21 for measuring the temperature of the washer liquid and a control unit for receiving temperature data from the temperature sensor 21 and transmitting necessary control signals to the switching valve 13. 20 is provided. On the other hand, the washer tank 14 is provided with a pipe connected to the injection nozzle 19 for injecting the preheated washer liquid into the windshield glass of the vehicle, and a washer pump 18 for injecting the washer liquid is provided on the pipe.                         

The washer liquid preheating apparatus using the conventional free heater configured as described above is operated as follows. When the temperature of the washer liquid is cooled to the reference value or less from the temperature data transmitted from the temperature sensor 21, the control unit 20 operates the switching valve 13 to cool the water heated by the preheater 12 to the washer tank ( 15) Allow it to flow inside. The introduced coolant is heat-exchanged with the washer liquid while passing through the winding pipe 15 and is transferred back to the pre-heater unit through the hose 16. The washer liquid preheated by this heat exchange is injected by the washer pump 18 into the windshield glass through the spray nozzle 19.

The conventional washer liquid preheater using the pre-heater has the advantage of preheating the washer liquid using the heat generated from the pre-heater.However, since the washer fluid is indirectly heated using the cooling water heated by the pre-heater as an intermediate medium, the heat efficiency is increased. Not only this fall but also the winding pipe is installed in the washer tank 14 has a problem that the storage space of the washer liquid is reduced.

The present invention has been proposed to solve this problem by providing a pipe between the washer tank and the pre-heater so that the washer liquid can be circulated into the pre-heater, so that the washer liquid can be directly heated by the heat of the pre-heater, thereby improving thermal efficiency. The purpose of the present invention is to provide a washer liquid preheating apparatus using a pre-heater.

The washer fluid preheating apparatus using the pre-heater according to the present invention for achieving the above object is connected to the pre-heater unit consisting of a front heater, a rear heater and a pre-heater in the preheater washer liquid; A pipe is provided between the washer tank in which the washer fluid is stored and the pre-heater so that the washer fluid can be circulated, and an opening / closing valve for controlling the washer fluid is circulated, and the washer tank measures the temperature of the washer fluid. A temperature sensor is mounted, and the controller receives the temperature data from the temperature sensor and transmits necessary control signals to the on-off valve.

In addition, the pipe installed in the pre-heater is composed of a winding pipe in order to improve thermal efficiency. In addition, a circulation pump for smoothing the circulation of the washer liquid is installed in the pipe. On the other hand, the washer tank is provided with a pipe connected to the spray nozzle provided to face the windshield glass of the vehicle, the washer pump for spraying the washer liquid is provided.

Hereinafter, with reference to Figure 3 will be described in more detail the configuration of the washer liquid preheating apparatus using a pre-heater according to the present invention.

First, a pre heater unit is provided as an apparatus for heating the cooling water of an engine. The preheater unit includes a preheater 32 having a burner installed therein to directly heat the cooling water, a front heater 30 and a rear heater 31 in communication with the preheater 32. Cooling water heated in the pre-heater 32 heats the indoor air in the car while passing through the front heater 30 and the rear heater 31 to be heated. The pipe passing through the inside of the pre-heater 32 forms a wound pipe 33 to improve the thermal efficiency by increasing the time and contact area of the coolant stays in the pre-heater 32.                     

Meanwhile, a pipe is provided between the washer tank 35 in which the washer fluid is stored and the free heater 32 so that the washer fluid can be circulated, and the opening / closing valve 36 for controlling the washer fluid is circulated. The washer tank (35) is equipped with a temperature sensor (38) for measuring the temperature of the washer liquid stored therein, and receives a temperature data from the temperature sensor (38) and a control unit for transmitting a necessary control signal to the on-off valve (36) 39). Thus, according to the present invention, since the washer liquid is heated while being circulated directly into the pre-heater 32, it is not necessary to provide a pipe for passing the coolant inside the washer tank 35 as shown in FIG. Can be.

On the other hand, the pipe passing through the pre-heater 32 is also made of a winding pipe in order to improve thermal efficiency. As described above, when the winding type pipe is configured, the time and the contact area of the washer fluid stay in the free heater 32 are increased, thereby improving the thermal efficiency of the burner.

On the other hand, in the pipe connecting the washer tank 35 and the pre-heater 32 is provided with a circulation pump 37 to smooth the circulation of the washer liquid. Although natural convection may occur due to a temperature difference between the hot washer fluid heated in the pre-heater 32 and the cold washer fluid stored in the washer tank 35, the preheated washer fluid may flow into the washer tank 35. In addition, by installing the circulation pump 37 in case the flow due to the convection is not so large that the temperature difference is not forced to circulate the preheated washer fluid.

Finally, the washer tank 38 is provided with a pipe connected to the injection nozzle 41 provided to face the windshield glass of the vehicle, and the washer pump 40 for spraying the washer liquid is installed in the pipe. The preheated washer liquid is sprayed on the glass of the wonder shield through the spray nozzle 41 to easily remove the frost and frozen foreign matter generated in the winter glass.

The washer fluid preheating apparatus using the free heater according to the present invention configured as described above is operated as follows. First, the controller 39 receives temperature data from the temperature sensor 38 installed in the washer tank 35 and measures the temperature of the washer liquid stored in the tank in real time. When the temperature of the washer liquid is detected to be subcooled below the reference value from the measured temperature data, the controller 39 transmits a control signal to the control valve 36 to open it.

As a result, the washer liquid preheated by the pre-heater 32 flows into the washer tank 35. If the convection caused by the temperature difference is not smooth, the circulating pump 37 is operated so that the preheated washer fluid can be forced to flow. The cold washer fluid stored in the washer tank 35 by the amount of the washer liquid introduced flows back into the pre-heater 32 and continues to circulate.

After a certain time, if the temperature of the washer liquid stored in the washer tank 35 is heated above the reference value from the temperature data input from the temperature sensor 38, the control unit 39 is again controlled by the control valve 36 Send a signal to close it. This prevents the washer fluid preheated by the pre-heater from flowing into the washer tank 35 to prevent the washer fluid from overheating.                     

This washer fluid is sprayed to the windshield glass through the injection nozzle 41 in accordance with the operator's operation effectively removes the frost generated on the winter glass, thereby ensuring a driver's forward view.

According to the washer liquid preheating apparatus using the free heater according to the present invention as described above, by allowing the washer liquid to be directly heated from the heat source of the pre-heater to improve the thermal efficiency. In addition, since there is no need to provide a cooling water pipe in the washer tank as in the related art, the washer liquid storage space can be sufficiently secured.

Claims (4)

An apparatus for preheating washer liquid connected to a pre-heater unit comprising a front heater 30, a rear heater 31 and a pre-heater 32; A pipe is provided between the washer tank 35 storing the washer fluid and the pre-heater 32 so that the washer fluid can be circulated, and an opening / closing valve 36 for controlling the washer fluid is circulated is installed, and the washer The tank 35 is equipped with a temperature sensor 38 for measuring the temperature of the washer liquid stored therein, the control unit 39 for receiving temperature data from the temperature sensor 38 and transmitting necessary control signals to the on-off valve 36. Washer liquid preheating apparatus using a pre-heater, characterized in that consisting of. 2. The washer liquid preheater using preheater according to claim 1, wherein the pipe installed in the preheater (32) comprises a winding type pipe (33) to improve thermal efficiency. The washer liquid preheating apparatus according to claim 1, wherein the pipe is provided with a circulation pump (37) for smoothly circulating the washer liquid. The washer tank (35) according to any one of claims 1 to 3, wherein the washer tank (35) is provided with a pipe connected to an injection nozzle (41) provided to face the windshield glass of the vehicle. Washer liquid preheating apparatus using a pre-heater, characterized in that the pump 40 is installed.

Images