JPH0519030U - Liquid replenishing device for wash tank and its liquid producing device - Google Patents

Abstract

(57) [Summary] [Purpose] The replenishment control of condensed water generated in the evaporator is accurate, and the number of washer fluid replenishments required when the cooler is operating is reduced. Does not dilute the washer liquid with the replenisher and does not reduce the oil film removability. [Structure] A condensed water tank 16 is connected to the lower end of a discharge pipe 13 of condensed water condensed by an evaporator 11, and a washer tank 23 is connected to a discharge pipe 21 of this condensed water tank 16 via a water pump 22. The controller 29 controls the water pump 22 in response to the switching signals of the level switch 19 of the condensed water tank and the level switch 26 of the washer tank to supply the condensed water to the washer tank.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for replenishing washer liquid stored in a washer tank of an automobile and a washer liquid manufacturing device used for the device. More specifically, it relates to an apparatus that utilizes water generated in an automobile cooler to replenish washer fluid.

[0002]

[Prior Art]

 Conventionally, as this type of device, there has been proposed a washer tank water supply device in which a saucer for collecting condensed water condensed by an evaporator in a cooler unit in a vehicle compartment and a washer tank in an engine room are connected by a pipe ( (Shokai Sho 60-1658). In this device, a pipe is piped inside the washer tank to the outside of the tank, a water supply port is provided in the middle of the pipe in the tank, and a float valve that opens and closes according to the water level of the tank is provided at this water supply port. When the water level in the tank is low, the float valve is lowered to replenish the condensed water from the pipe, and when the tank reaches a certain water level, the pipe closes the water replenishment port and discharges the condensed water out of the tank.

[0003]

[Problems to be solved by the device]

 However, in the above device, if dust accumulates between the water supply port and the float valve or if water buildup occurs, the float valve will not operate normally and water supply or shutoff may be incomplete. .. In addition, since only the condensed water is supplied, the washer liquid containing alcohol, surfactant, rust preventive, antifreeze, etc. in the washer tank is diluted, resulting in insufficient removal of the oil film of the windshield glass. there were.

It is an object of the present invention to provide a washer tank liquid replenishing device that can accurately control the replenishment of condensed water generated in an evaporator and can reduce the number of times of manual washer liquid replenishment when an automobile cooler is operating. It is in. Another object of the present invention is to provide a washer tank liquid replenishing device and a washer liquid producing device which do not dilute the washer liquid with a replenishing liquid and do not deteriorate the oil film removability.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the washer tank liquid replenishing device of the present invention, as shown in FIG. 1, is an evaporator 11 for removing heat of air toward the passenger compartment, and condensed water condensed by the evaporator 11. A condensed water tank 16 having a first level switch 19 which is connected to the lower end of the discharge pipe 13 and is switched by the internal water level, and a discharge pipe 21 of the condensed water tank 16 which is connected via a water pump 22 to the internal water level. A washer tank 23 having a second level switch 26 for switching and a controller 29 for controlling the water pump 22 in response to switching signals of the first and second level switches 19, 26 are provided. As shown in FIG. 2, it is preferable to attach a washer liquid manufacturing device 40 to the upper portion of the washer tank 23 of this liquid replenishing device. In this case, the washer liquid producing device 40 has a built-in washer liquid raw material 44 that is dissolved by the condensed water or the injection water of the evaporator 11 to form the washer liquid, and the generated washer liquid is allowed to flow into the washer tank. Is composed of.

[0006]

[Action]

 When the condensed water tank 16 reaches or exceeds a predetermined water level and the washer tank 23 is below the predetermined water level, the controller 29 operates the water pump 22 by the signals of the first and second level switches 19 and 26, The water in the water tank 16 is supplied to the washer tank 23. If the washer liquid production device 40 is provided, the condensed water dissolves the washer liquid raw material 44, and the washer liquid of the predetermined component is supplied to the washer tank 23 without being diluted.

[0007]

Embodiment Next, one embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the air blown out from the blower 10 of the automobile cooler and directed into the vehicle interior is deprived of heat by the evaporator 11. Below the evaporator 11, a water collecting plate 12 for collecting condensed water dripping from the outer surface of the evaporator is provided, and an upper end of a discharge pipe 13 is connected to the water collecting plate 12. A filter 14 for removing dust flowing down together with the condensed water is provided in the middle of the discharge pipe 13, and the lower end of the discharge pipe 13 is connected to a condensed water tank 16. A lid 17 and an overflow pipe 18 are provided on the top of the tank 16, and a first level switch 19 is provided upright on the bottom. The level switch 19 is a reed switch that is switched by vertical movement of the float 19a floating in the condensed water. The level switch 19 is turned on when a predetermined water level A is reached and turned off when the water level is lower than the predetermined water level A.

One end of a discharge pipe 21 is connected to the bottom of the condensed water tank 16, and a water pump 22 is provided in the middle thereof. A washer tank 23 is connected to the other end of the discharge pipe 21. A lid 24 and a second level switch 26 are vertically provided on the tank 23. The level switch 26 is a reed switch that is switched by vertical movement of the float 26a floating in the washer liquid, and is a switch that is turned off when a predetermined water level B is reached and turned on when the water level is lower than the predetermined water level B. A base end of a conduit 27 is connected to a lower portion of the washer tank 23, and a washer pump 28 is provided in the conduit 27. A washer nozzle (not shown) is connected to the tip of the guide tube 27. The outputs of the level switches 19 and 26 are connected to the input of the AND circuit 31 of the controller 29, and the output of the AND circuit 31 is connected to the control input of the operation switch 32 of the pump 22. The output of the level switch 26 is connected to the H active input of the inhibit circuit 33, and the output of the AND circuit 31 is connected to the L active input of the inhibit circuit 33. The output of the inhibition circuit 33 is connected to the alarm lamp 34 in the driver's seat. Further, the pump 28 is connected to an operation switch 36 provided in the driver's seat.

The operation of the washer tank liquid replenishing device having such a configuration will be described. When the automobile cooler is operated and condensed water drops from the outer surface of the evaporator 11, the condensed water collected by the water collecting plate 12 is filtered by the filter 14 and flows into the condensed water tank 16. When the condensed water reaches a predetermined water level A and the washer liquid in the washer tank 23 is lower than the water level B, the output of the AND circuit 31 becomes high level, and the controller 29 turns on the switch 32 to operate the water pump 22. To do. As a result, the condensed water in the condensed water tank 16 is supplied to the washer tank 23 through the discharge pipe 21. At other times, the water pump 22 becomes inoperative, and when the water level of the washer tank 23 becomes lower than the predetermined water level B, the output of the prohibition circuit 33 becomes high level, the alarm lamp 34 lights up, and the driver is in a tank. Remove the lid 24 of 23 and encourage to replenish the wash liquid. When the driver turns on the switch 36, the pump 28 operates and the washer liquid is ejected from a washer nozzle (not shown).

FIG. 2 shows another embodiment of the present invention. 2, the same reference numerals as those in FIG. 1 mean the same components. The characteristic structure of this embodiment is that the washer liquid producing device 40 is attached to the upper portion of the washer tank 23. As shown in detail in FIG. 3, the washer liquid manufacturing device 40 includes a dish-shaped washer liquid raw material container 41, a cap 42 that can be fitted into an opening 41 a of the raw material container 41, a cap 42 and a raw material container 41. It is constituted by a filter 43 that is held. The washer liquid raw material container 41 accommodates the washer liquid raw material 44 in the center thereof, and the upper portion thereof is screwed and attached to the inlet opening 23 a of the washer tank 23. A large number of through holes 41 a communicating with the washer tank 23 are provided at the bottom of the raw material container 41. Reference numeral 46 is a ring-shaped housing frame. The washer liquid raw material 44 is a powder that is easily dissolved in water and contains components such as a surfactant and an anticorrosive agent. The cap 42 has a connection port 47 connectable to the discharge pipe 21 of the condensed water tank 16 and a water supply lid 48. The lid 48 can be fitted into the opening 42 a of the cap 42. The filter 43 is formed in a dish shape and has a large number of pores 43a at its bottom.

In the washer tank liquid replenishing device having such a configuration, when condensed water from the condensed water tank 16 flows into the washer liquid manufacturing device 40 through the discharge pipe 21 and the connection port 47 in the same manner as in the above embodiment, The condensed water once collects on the upper surface of the filter 43, and then is sprayed from the pores 43a to the washer liquid raw material container 41. A part of the dispersed condensed water passes through the through hole 41a in the form of a solution in which the washer liquid raw material 44 is dissolved, and the rest is dropped into the washer tank 23 through the direct through hole 41a. As a result, the washer liquid in the washer tank 23 is supplied without being diluted. When condensed water is not supplied from the condensed water tank 16 and the water level in the washer tank 23 is lowered, the lid 48 is opened and the water is supplied by the water supplier 49 as shown in FIG. When the washer liquid raw material 44 is no longer consumed, the cap 42 and the filter 43 are removed and the raw material 44 is replenished.

[0012]

[Effect of the device]

 As described above, in the conventional device, there was a problem that condensed water generated by the evaporator was easily incompletely supplied or shut off to the washer tank.However, according to the present invention, the level switch and the water pump are used. As a result, the replenishment control of the condensed water can be accurately performed, and the number of times of washer fluid replenishment by hand can be reduced when the vehicle cooler is operating. In addition, by mounting the washer liquid production device on top of the washer tank, the washer liquid can be replenished to the washer tank without diluting the components, and the oil film removability of the washer liquid is not reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a washer tank liquid supply device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a replenishing device according to another embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view of a main part of FIG. 2 showing the details of the washer liquid manufacturing device.

[Explanation of symbols]

 11 Evaporator 13 and 21 Discharge pipe 16 Condensed water tank 19 First level switch 22 Water pump 23 Washer tank 23a Washer tank inlet opening 26 Second level switch 29 Controller 40 Washer liquid producer 41 Washer liquid raw material input 41a Through hole 42 Cap 43 Filter 44 Washer liquid raw material 47 Connection port 48 Water supply lid

Claims (3)

[Scope of utility model registration request] 1. An evaporator (11) for depriving heat of air toward a vehicle interior, and a discharge pipe (13) for condensed water condensed by the evaporator (11).
A condensed water tank (16) having a first level switch (19) which is connected to the lower end of the condensed water tank and which is switched by the internal water level; and a discharge pipe (21) of the condensed water tank (16) via a water pump (22). A washer tank (23) having a second level switch (26) connected and switched by the internal water level, and the water pump (22) in response to the switching signals of the first and second level switches (19, 26). A washer tank liquid replenishing device including a controller (29) for controlling. 2. A washer liquid maker (40) is attached to an upper portion of the washer tank (23), and the washer liquid maker (40) dissolves the washer liquid by condensate water or injection water of the evaporator (11). The liquid supply device for a washer tank according to claim 1, wherein the washer liquid raw material (44) to be produced is built in, and the produced washer liquid is configured to flow into the washer tank (23). 3. The inlet opening (23) of the washer tank (23)
a dish-shaped washer liquid raw material container (41) having a through hole (41a) communicating with the washer tank at the bottom, and fitted into the opening of the washer liquid raw material container (41). A cap (42) which can be worn and has a connection port (47) connectable to the discharge pipe (21) of the condensed water tank (16) and a water supply lid (48); the cap (42) and a washer. The water which is held in the liquid raw material container (41) and flows in through the connection port (47) or the opened lid (48) is filtered, and the inflowing water is filtered by the washer liquid raw material (4).
A washer fluid maker equipped with a filter (43) for spraying on 4).