KR20100109248A - Apparatus for exchanging and cleaning of cooling water for automobile - Google Patents

Abstract

PURPOSE: An apparatus for exchanging and cleaning of cooling water for automobile which can change the flow direction of cooling water is provided to prevent damage to a pump by cooling water of high temperature. CONSTITUTION: An apparatus for exchanging and cleaning of cooling water for automobile comprises a pump(50), a first flow path(10), a second fluid path(20), a third flow path(30) and a fourth flow path(40). The second fluid path has a coupler(24) to be connected to the coupler of the flow path. The third flow path is connected to one port of the first three way valve to discharge cooling water. A third three way valve prepares between the first three way valve and the second three way valve.

Description

Apparatus for exchanging and cleaning of cooling water for automobile}

The present invention relates to an apparatus for replacing and cleaning a vehicle's cooling water, and more particularly, by connecting a vehicle engine, a radiator, and a heater to an upper hose connected to each other, as well as cleaning and replacing the basic cooling water, by using a pulsation of a pump. The present invention relates to an automobile cooling water exchange and cleaning device in which the removal of scales and scales is more reliably performed since the radiator or the heater can be cleaned (washed) by circulating the cooling water or the washing liquid in the opposite direction to the cooling water flow.

In general, automobile engines can be divided into gasoline and diesel engines, which are powered by inhaling, compressing, and igniting (burning) fuel. This naturally generates heat.

1, the radiator R is connected to the first upper and lower hoses TH1 and LH1 to prevent overheating of the engine block EB and to maintain an optimum temperature condition, as shown in FIG. The radiator R removes the coolant in the engine block EB since the water temperature controller WHC is opened while the water pump WP on the engine block EB is operated when the coolant of the vehicle engine E exceeds the set temperature. The radiator R is sent to the radiator R through the first upper hose TH1 to radiate heat, and the cooled coolant is supplied to the engine block EB through the first lower hose LH1.

In addition, a heater (H) is provided for heating the vehicle interior in low temperature or in winter. The heater (H) is also connected through the engine block (EB) and the second upper and lower hoses (TH2, LH2). The hot cooling water of the engine block EB is circulated in accordance with the on / off of (H) to be used for heating.

The coolant filled in the water jacket of the engine block EB constituting the automobile engine E is contaminated with time, and thus the water in the engine block EB constituting the automobile engine filled with the coolant is not properly functioned as the coolant. The inside of the jacket, the radiator (R) and the heater (H) is attached to scale or foreign matter and scale is generated. In particular, the radiator (R) or the heater (H) is concentrated in the pipe tip portion in which the coolant is introduced to block the cooling water passage, which reduces the cooling water passage, and thus could not achieve a smooth and uniform cooling water flow.

Therefore, the coolant must be replaced periodically or the engine block EB, the radiator R and the heater H must be cleaned. At this time, the cooling water is exchanged and the cleaning device is connected to the first and second upper and lower hoses between the radiator R and the heater H to clean or replace the cooling water.

Conventional cooling water exchange and cleaning device associated with this technology is disclosed in Korean Patent Laid-Open Publication No. 95-19056. The patent discloses an engine block of an automobile engine in a heater by driving a pump by connecting a discharge port of an equipment side to a lower hose between a water pump and a heater of an automobile engine and a suction port of an equipment side to an upper hose of an upper radiator. At the same time, the coolant circulated from the radiator to the engine block of the automobile engine can be passed through the filter or stored in the tank.

The above-described patent discloses cleaning the waste coolant filled in the engine block of the automobile engine without replacing it, thereby preventing the leakage of the waste coolant and removing scale or sludge from the wall of the engine block, thereby improving the efficiency of the cooling system of the automobile engine. This aimed to prevent clogging of radiators and heaters, to prevent overheating, to prevent wear of water pumps, and to increase the life of parts.

In the conventional cooling water exchange and cleaning apparatus as described above, the cooling water is required to be maintained at a predetermined temperature in order to improve the cleaning effect (cleaning force) of the engine block, the radiator and the heater of the cooling water or the engine block of the automobile engine. Therefore, when cleaning the engine block, the radiator and the heater of the cooling engine or the car, the work was usually performed with the automobile engine driven. However, the temperature of the coolant during driving of the automobile engine is different depending on the vehicle type, but there is a problem in that the pump is easily damaged because the temperature is generally high at 60 ° C. to 100 ° C.

In addition, it is possible to see the contamination level of the coolant passing through the filter installed in front of the equipment and store it in the tank, but this is not suitable to prevent the contamination of the filter because the flow path is stored in the tank after the contaminated coolant enters the filter. Of course, there was a problem that the life of the filter is shortened.

The present invention has been researched and developed to solve the above-mentioned conventional closure and problems. An object of the present invention is to clean the engine block, the radiator and the heater of the automobile engine, when the temperature of the coolant is about 70 ~ 80 ℃ or more by switching the cooling water is not supplied to the pump through the bypass flow path bypassed to the radiator or heater The present invention provides an apparatus for replacing and cleaning an automotive cooling water, which can prevent damage to a pump caused by high temperature cooling water.

Another object of the present invention is to provide a sight glass and a three-way valve in the flow path flowing from the radiator or the heater to see the contamination of the coolant to choose whether to clean (wash) or discharge the coolant to the outside, thereby To minimize the contamination of the filter as well as to extend the life of the automotive cooling water replacement and cleaning device to provide.

Still another object of the present invention is to provide three three-way valves for the first and second euros connected to the first and second upper hoses of the radiator and the heater to switch the flow of cooling water in the forward and reverse directions. Internal cleaning of engine block, radiator and heater of automobile engine can be performed in the forward and reverse direction as desired. Especially, if the pump adopts pulsating pump using pulsating discharge pressure, it can improve the cleaning effect. The present invention provides an apparatus for replacing and cleaning a vehicle coolant.

The present invention for achieving the above object is a pump having a suction port and a discharge port; A first flow path having a coupler at an end thereof to extend from a discharge port of the pump and to be connected to a coupler on a flow path forming a cooling system on an automobile engine side; A coupler is provided at the end to be connected to the coupler on the flow path forming the cooling system of the vehicle engine side, and the first filter, the second filter, the first three-way valve, the second three-way valve, and the third filter are sequentially connected from the coupler to the pump. A second channel connected to the second channel; A third flow passage connected to one port of the first three-way valve to discharge cooling water; A fourth flow passage connected to one port of the second three-way valve for supply of washing liquid or fresh cooling water; In the vehicle cooling water exchange and cleaning device comprising a, a third three-way valve is provided between the first three-way valve and the second three-way valve and one port of the third three-way valve is a coupler at the end of the first flow path And a bypass line is connected to the first flow path between the pump and the pump.

In the vehicle cooling water exchange and cleaning apparatus according to the present invention, a second glass between the coupler at the end of the second flow path and the first filter is provided with a sight glass for checking the contamination level of the cooling water, and the contamination degree of the cooling water. According to the fourth three-way valve that can be switched to the first three-way valve side is characterized in that it is provided.

Between the second filter and the first three-way valve, the coolant passing through the fourth three-way valve is flowed back to the second and first filter side to add a check valve for preventing contamination of the second and first filter.

In the vehicle cooling water exchange and cleaning device according to the present invention, an air discharge valve for extracting air introduced into the second flow path between the check valve and the first three-way valve when cooling water is exchanged or a cleaning liquid is injected for cleaning. Is further provided and the discharge port of the air discharge valve is characterized in that connected to the third flow path.

The pump is preferably provided with an air pulsation pump or a diaphragm pump that can generate a pulsating discharge pressure so as to improve the cleaning of the engine block, the radiator and the heater of the automobile engine.

It is preferable that a connection hose unit for connecting the first and second upper hoses on the side of the vehicle engine to manually switch the cooling water flow path to the coupler at the end of the first and second flow paths is added.

The connecting hose unit is provided with an intermediate fifth three-way valve, and a hose is connected to each port of the fifth three-way valve, and a coupler is provided at each end of the hose.

The connecting hose unit is characterized in that the three open and close valves are connected in three directions in the middle and the hoses are connected to the outer ports of the open and close valves, respectively, and the coupler is provided at each end of the hose.

In the vehicle cooling water exchange and cleaning apparatus according to the present invention, the third three-way valve is an electric valve so that a temperature sensor is provided at an arbitrary position on the second flow path and is automatically switched by the operation unit in response to a detection signal of the temperature sensor. Characterized in that provided. The temperature sensor may be any position provided at any position on the second flow path that can measure the temperature of the coolant discharged from the engine block of the automobile engine.

The sixth three-way valve is provided in the first flow path between the coupler and the pump at the end of the first flow path, and the seventh three-way valve is provided in the second flow path between the coupler and the sight glass at the end of the second flow path. The eighth three-way valve is provided in the first flow path between the pump and the pump and is branched from the eighth three-way valve to the sixth and seventh three-way valves, and one port of the sixth three-way valve is switched between the seventh three-way valve and the sight glass. The line is connected.

As described above, the vehicle cooling water exchange and cleaning apparatus according to the present invention, when the temperature of the cooling water is about 70 ~ 80 ℃ or more when cleaning the engine block, radiator and heater of the automobile engine to the cooling water pump through the bypass flow path By switching off the supply and bypassing it with a radiator or heater, it has a useful effect of preventing damage to the pump by the high temperature cooling water.

In addition, by installing a sight glass and a three-way valve in the flow path flowing from the radiator or the heater, the contamination of the coolant can be viewed, and the coolant can be selected to be cleaned or discharged to the outside, thereby minimizing the contamination of the filter. It has a unique effect of extending its lifespan.

In addition, the present invention provides three three-way valves connected to the first and second upper hoses of the radiator and the heater to switch three-way valves to change the flow of cooling water in the forward and reverse directions. Internal washing of engine block, radiator and heater of automobile engine can be performed in the forward and reverse direction of the engine. Especially, if the pump adopts pulsating pump using pulsating discharge pressure, improved washing power can be obtained.

Or less, on the basis of the accompanying drawings, the replacement and cleaning device for the cooling water for automobiles according to the present invention will be described in detail.

2 is a perspective view showing an apparatus for replacing and cleaning a vehicle coolant according to an embodiment of the present invention.

Here, the exchange and cleaning device 100 having a caster 101 for easy movement on the lower surface is provided, and the sight glass 25 and the agent are provided so that they can be exchanged while appearing in front of the exchange and cleaning device 100. A first filter 21 and a second filter 22 are provided, and on one side thereof, couplers 11 and 24 and first and second three-way valves at each end of the first flow path 10 and the second flow path 20 are provided. (V1, V2) is mounted to each coupler (not shown) and the storage box 102 for storing and storing the first to fourth flow paths (10, 20, 30, 40) or hoses extending therefrom It is prepared.

In addition, an operation part 103 is provided on an upper inclined front surface of the exchange and cleaning device 100, and the operation part 103 includes a pressure gauge 55 indicating a pressure on the first flow path 10, and a pump 50. ) Of the variable pump switch 104 capable of stopping or adjusting the operating conditions at the time of operation, and the second valve V2 for switching the flow path to the first filter 21 or the third three-way valve V3 side. The on / off switching lever 106 and the on / off switching lever 105 of the third three-way valve V3 for selecting whether to circulate the cooling water to the pump 50 side are provided.

3 is a circuit diagram schematically illustrating an apparatus for replacing and cleaning an automobile cooling water according to the present invention.

The present inventors exchange and cleaning device 100 is provided with a pump 50 having a suction port and a discharge port, the discharge port of the pump 50 is coupled to the end of the coupler (end) so as to be connected to the cooling system of the automobile engine (E) 11, a first flow path 10 having an extension, and a second flow path 20 having a coupler 24 at the end of the suction port of the pump 50 so as to be connected to the cooling system of the automobile engine E. Is connected.

The pump 50 is preferably adopted as an air pulsation pump or a diaphragm pump capable of generating pulsation discharge pressure. This is because the cleaning power can be improved when cleaning the engine block EB, the radiator R, and the heater H, which form the cooling system of the automobile engine E.

The second flow path 20 has a first filter 21, a second filter 22, a first three-way valve V1, and a second three-way valve V2 from the coupler 24 at the end to the pump 50. ) And a third filter 23 are sequentially provided, and a third flow path 30 for discharging the coolant is connected to one port of the first three-way valve V1, and the second three-way valve V2. One port of the fourth passage 40 is connected to the supply of the washing liquid or fresh cooling water.

The third three-way valve (V3) is provided between the first three-way valve (V1) and the second three-way valve (V2), the discharge port of the pump 50 and the first port in one port of the third three-way valve (V3) The bypass line 12 is connected between the coupler 11 at the end of the flow path 10.

Between the coupler 24 at the end of the second flow path 20 and the first filter 21, a sight glass 25 for checking the degree of contamination of the cooling water is provided, and the first three-way valve according to the degree of contamination of the cooling water is provided. A fourth three-way valve V4 that can be switched to V1 is provided.

In addition, between the second filter 22 and the first three-way valve (V1), the cooling water passing through the fourth three-way valve (V4) is supplied only to the first three-way valve (V1) side and the second, first filter ( 22 and 21, check valves 26 are provided to prevent the flow of the second and first filters 22 and 21 from being reversed.

The first to fourth three-way valve (V1 ~ V4) is a manual three-way valve that can be artificially switched by the operator.

FIG. 4 is a block circuit diagram schematically showing a state in which an exchange and cleaning apparatus for an automobile cooling water of the present invention is connected to a cooling system of an automobile engine, and FIG. 5 is a circuit diagram illustrating FIG. 4 in detail.

In the cooling system of the vehicle engine E, the engine block EB, the radiator R, and the heater H are connected to each other through the first and second upper and lower hoses TH1, LH1, TH2, and LH2. The second upper hoses TH1 and TH2 are provided with a pair of couplers TC1 and TC2, respectively, between the couplers TC1 and TC2 of the first and second upper hoses TH1 and TH2. The connection hose units 60A and 60B for controlling the flow direction of the coolant circulated in the engine block EB and the radiator R and the heater H of the engine E are connected.

The connecting hose unit 60A is provided with a fifth three-way valve 61 in the middle and a coupler 63 is provided at each end of the hose 62 connected to each port of the fifth three-way valve 61.

The connecting hose unit 60B is connected to three open / close valves 64A, 64B, and 64C in three directions in the middle, and at the end of the hose 65 connected to the outer port of the open / close valves 64A, 64B, and 64C. It can also be provided with the coupler 66, respectively.

The coupler (TC1 or TC2) of the coupler (TC1, TC2) to the exchange and cleaning device of the present invention through the coupler (11, 24) provided at the end of the first, second flow path (10, 20) ( 100) and automotive engine cooling system.

The fifth three-way valve 61 and the on-off valves 64A, 64B, 64C are both manual valves that can be artificially switched by the operator.

In the vehicle cooling water exchange and cleaning apparatus according to the present invention configured as described above, as shown in FIGS. 4 and 5, first, the engine block EB of the automobile engine E, the radiator R, and the heater H are connected. The hose unit (60A, 60B) for connecting to the coupler (TC1, TC2) of the first, second upper hose (TH1, TH2) is installed.

At this time, the first and second flow paths forming the device of the present invention to one coupler (63, 66) that is not connected to the first and second upper hoses (TH1, TH2) in the connecting hose units (60A, 60B). Connect the coupler (11, 24) at the end of (10, 20). At this time, the fifth side of the connection hose unit (60A, 60B) so that the coolant circulated along the engine block (EB) and the radiator (R) and the heater (H) of the automobile engine (E) is not introduced to the device side of the present invention. The valve 61 and the open / close valves 64A, 64B, and 64C are closed off.

After connecting the apparatus of the present invention to the cooling system of the automobile engine E as described above, the automobile engine E is driven to the engine block EB, the radiator R and the heater H of the automobile engine E. The filled cooling water is preheated to a predetermined temperature. At this time, the preheating temperature is different for each maker or model of the car, but is approximately 60 ° C to 100 ° C.

Two open / close valves 64B and 64C which open and open the fifth three-way valve 61 of the connection hose unit 60A in the state where the automobile engine E is driven in this way and at the same time form the connection hose unit 60B. By opening the first and second flow paths (10, 20) of the present invention to operate through the flow path. At this time, all of the first to fourth three-way valves V1 to V4 are in an off state.

In this state, due to the discharge pressure of the water pump WP of the automobile engine E, the sight glass 25 of the second flow path 20 is connected to the hose unit 60B through the water temperature controller WHC. The fourth three-way valve (V4) → the first three-way valve (V1) → is supplied to the third three-way valve (V3), then the bypass line (12) → coupler (11) of the first flow path (10) → connection hose The unit 60A is radiated to the water pump WP side of the vehicle engine E via the radiator R to the first lower hose LH1, thereby circulating.

In this way, the temperature of the coolant discharged from the engine block EB of the vehicle engine E is roughly judged by the instrument panel provided on the driver's seat front surface, and when the temperature of the coolant reaches about 70 to 80 ° C. or more, The pump switch 104 is kept off.

When the variable pump switch 104 of the operation unit 103 is maintained in the off state, the third electric three-way valve V3 is kept in the off state, so that the hot coolant is not supplied to the pump 50 side. It is possible to protect the pump 50 that is weak to the nature due to heat. At this time, the vehicle engine E is preferably stopped.

When the temperature of the cooling water passing through the sight glass 25 on the second flow path 20 is an appropriate temperature, when the variable pump switch 104 of the operation unit 103 is turned on, the third three-way valve V3 is turned on. Is opened in an on state, and thus is supplied to the pump 50 through the second three-way valve V2 and the third filter 23 and connected to the first flow path 10 from the pump 50. The hose unit 60A → radiator R → the first lower hose LH1 is returned to the water pump (first) side of the vehicle engine E, and is circulated.

When the pump 50 is operated in this state, the coolant is sucked from the coupler 24 side of the second flow path 20 and the coolant is pumped to the coupler 11 side of the first flow path 10. As described above, the coolant pumped from the earth pressure port of the pump 50 includes the first flow path 10 → the radiator R → the first lower hose LH1 → the engine block EB of the vehicle engine E. → the hose unit for connection (60B) → the process of returning to the pump 50 along the second flow path 20 is continuously made to be circulated.

When the coolant is circulated in this way, when the contamination of the coolant is serious and it is to be replaced, the third and fourth flow paths 30 and 40 are taken out of the storage box 102 on the side of the exchange and cleaning apparatus 100, and the third flow path is removed. The waste cooling water tank 70 is provided at the end of the 30, and the end of the fourth flow passage 40 is placed in the new cooling water tank 75 containing the fresh cooling water, and then the first and second three-way valves V1. And V2 are turned on to open.

Therefore, the waste cooling water is discharged from the first three-way valve (V1) to the waste cooling water tank (70) through the third flow passage (30), and at the same time, the third cooling water is discharged through the fourth flow passage (40) and the second three-way valve (V2). Filter (23) → Pump (50) → First flow path (10) → Fifth three-way valve (61) of connecting hose unit (60A) → Radiator (R) and then through first lower hose (LH1) Since the water pump WP of the vehicle engine E is filled, new coolant is filled in the engine block EB and the radiator R of the vehicle engine E.

At this time, the waste cooling water is not flowed back to the second and first filters 22 and 21 by the check valve 26 of the second flow path 20, thereby preventing contamination of the second and first filters 22 and 21. This allows for long term use.

Thus, while the coolant is filled in the engine block EB of the automobile engine E, the heater H is stagnant and the waste coolant remains. The coolant is filled in the engine block EB of the automobile engine E. Thereafter, the on / off valve 64B of the connection hose unit 60B is locked and the on / off valve 64A is opened.

Therefore, since the water pump (first) of the vehicle engine (E) is supplied to the heater (H) through the second lower hose (LH2) it is possible to replace the cooling water by filling the fresh cooling water in the heater (H). After the new coolant is filled in the heater H, the coupler 24 of the second channel 20 → the sight glass 25 → the fourth third through the opening / closing valves 64A and 64C of the connection hose unit 60B. It flows to the discharge valve V4 side and starts to be discharged from the first three-way valve V1.

In this way, when the new coolant is discharged from the first three-way valve (V1), the replacement of the coolant is completed, so that the first and second three-way valves (V1, V2) are turned off and shut off to shut off the waste coolant. The supply of fresh coolant is cut off, thus completing the replacement of the coolant.

When the cooling water is circulated as described in FIGS. 4 and 5, when the contamination of the cooling water is to be viewed and cleaned, the end of the fourth passage 40 is placed in a washing liquid container (not shown) containing the cleaning liquid, and then After the three-way valve V4 is turned on, the second three-way valve V2 is temporarily turned on for a predetermined time so that the washing liquid of the washing liquid container is sucked from the fourth flow passage 40, and the second The three-way valve V2 is turned off to shut off.

The cooling water supplied with the predetermined amount of the washing liquid is supplied to the radiator R through the first flow path 10 and the connection hose unit 60A by the pump 50, and the first lower hose (R) is discharged from the radiator R. LH1) → supplied to the coupler 24 of the second flow path 20 through the engine block EB of the automobile engine E → a connection hose unit 60B, and then the sight glass 25 of the second flow path 20. → Fourth three-way valve (V4) → First filter 21 → Second filter 22 → Check valve 26 → First three-way valve (V1) → Third three-way valve (V3) → Second three-way valve (V2) → the third filter 23 → the pump 50 is circulated through.

As the coolant is circulated, foreign matters, scales, and other foreign matter in the coolant are filtered and removed, so that the water pump of the vehicle engine E, the engine block EB, the radiator R, as well as the inner wall of the first upper and lower hose TH1 are removed. This is cleaned and the coolant flowing through it is also cleaned.

At this time, since the cooling water on the heater H side is stagnant, the on / off valve 64B of the connection hose unit 60B connected to the second upper hose TH2 is locked and the on / off valve 64A is opened. Therefore, since the water pump WP of the vehicle engine E is supplied to and circulated through the second lower hose LH2 to the heater H, the cooling water inside the heater H and the inside thereof are also cleaned.

Since the pump 50 is an air pulsation pump or a diaphragm pump capable of generating a pulsation discharge pressure when cleaning, the inner wall of the engine block EB, the radiator R and the heater H of the vehicle engine E is pumped ( The pulsation discharge pressure of 50) improves the cleaning effect. After this cleaning, the contaminated coolant filled in the engine block (EB), the radiator (R) and the heater (H) of the vehicle engine (E) is removed and a new operation is performed as described above. do.

As described above, when the coolant is replaced or cleaned, the pressure displayed on the pressure gauge 55 on the first flow path 10 is used to connect the radiator R or the heater H connected to the vehicle engine E, or to connect them. The first and second upper and lower hoses (TH1, TH2, LH1, LH2) or the leakage of the first passage 10, the second passage 20 in the apparatus of the present invention can determine whether there is an abnormality will be.

FIG. 6 is a circuit diagram of a state in which a coupler of first and second flow paths is changed and connected to a cooling system of an automobile engine in an apparatus for replacing and cleaning a vehicle cooling water according to the present invention.

Here, the couplers 63 and 66 of the connection hose units 60A and 60B and the couplers 11 and 24 of the first and second flow paths 10 and 20 are connected to FIG. 4.

In other words, the coupler 66 of the end of the first passage 10 is connected to the coupler 66 of the connection hose unit 60B installed in the second upper hose TH2 of the vehicle engine E, and the first The coupler 63 of the end of the second flow path 20 is connected to the coupler 63 of the connection hose unit 60A installed on the upper hose TH1.

When the apparatus of the present invention is connected as described above, as the pump 50 is driven, the coolant is sucked from the coupler 24 side of the second flow path 20 and simultaneously to the coupler 11 side of the first flow path 10. The cooling water is pumped. The cooling water pumped from the earth pressure port of the pump 50 is the first flow path 10 → the hose unit 60B for connection on the second upper hose TH2 → the engine block EB of the vehicle engine E → the first The process of returning to the pump 50 along the lower hose (LH1) → radiator (R) → connecting hose unit (60A) on the first upper hose (TH1) → the second channel (20) is different from FIG.

In other words, when the vehicle engine E is driven, it flows in the opposite direction to the flow direction of the coolant, so when the vehicle engine E is driven, the water pump of the vehicle engine E is compared with cleaning in the flow direction of the coolant. The cleaning effect can be improved by more effectively removing the scales attached to the inner walls of the engine block EB, the radiator R and the first lower hose LH1.

7 is a circuit diagram showing another embodiment of the replacement and cleaning apparatus for a cooling water for a vehicle according to the present invention. Here, the air discharge valve 27 is provided in the second flow path 20 between the check valve 26 and the first three-way valve (V1) in Figure 3, which is an embodiment of the present invention and the air discharge valve (27) The discharge port of) is connected to the third passage 30.

The air discharge valve 27 is provided with a float 27b in the valve body 27a so as to be lifted and lowered. When the coolant flowing from the suction port of the valve body 27a is discharged through the discharge port, the float 27b is provided. Is raised to block the discharge port, and when air other than the cooling water is drawn, the air is lowered by the weight of the float 27b to open the discharge port, thereby discharging the remaining air in the valve body 27a.

In another embodiment of the vehicle cooling water exchange and cleaning device configured as described above, the air may be sucked when the cleaning solution is injected to exchange or clean the cooling water of the cooling system in connection with the vehicle cooling system.

When air is sucked in and flows along the first and second flow paths 10 and 20, and air is introduced through the suction port of the air discharge valve 27, there is no cooling water in the valve body 27a. 27b) is lowered and the discharge port is opened. At this time, the air existing in the valve body 27a is discharged to the outside through the third flow path 30 and when the coolant is introduced while the air is exhausted from the valve body 27a, the float 27b is formed by the cooling water. Elevated to shut off the discharge port.

In this state, the cooling water flowing from the suction port of the valve body 27a is automatically supplied to the first three-way valve v1 through the discharge port. Therefore, the air is automatically discharged even when air is introduced when the cooling water of the cooling system is replaced or cleaned, so that the work as desired in the apparatus of the present invention can be performed without any concern about the flow of the cooling water.

8 is a circuit diagram showing another embodiment of the replacement and cleaning apparatus for a cooling water for a vehicle according to the present invention.

In FIG. 3, which is an embodiment of the present invention, a sixth three-way valve V6 is provided in the first passage 10 between the coupler 11 and the pump 50 of the first passage 10 and the second passage 20. The seventh three-way valve V7 is provided in the second flow path 20 between the coupler 24 and the sight glass 25 at the end, but the first flow path between the sixth three-way valve V6 and the pump 50 is provided. An eighth three-way valve (V8) is additionally provided to (10) to be branched from the eighth three-way valve (V8) to the sixth and seventh three-way valves (V6, V7) and the sixth three-way valve (V6) One port is connected to the conversion line 28 to the second flow path 20 between the seventh three-way valve V7 and the sight glass 25.

In addition, the third and fourth three-way valve (V3, V4) of the second flow path 20 is automatically provided manually and the temperature sensor for turning on / off the third three-way valve (V3) in the sight glass 25 ( It is the same as the structure of one embodiment of the present invention except that HS) is added. For example, the temperature sensor HS is merely installed in the sight glass 25, and the temperature sensor HS may be a position capable of measuring the coolant temperature discharged from the engine block EB of the vehicle engine E. It may be provided at any position on the flow path 20.

According to the configuration of another embodiment as described above, as described in the embodiment of the present invention, the first, second upper portion connecting the engine block (EB), the radiator (R) and the heater (H) of the automobile engine (E) Connecting hose units 60A and 60B are additionally installed on the hoses TH1 and TH2, and ends of the first and second flow paths 10 and 20 to the couplers 63 and 66 of the connection hose units 60A and 60B. The coupler (11, 24).

In this state of connection, the automobile engine E is driven to preheat the coolant filled in the engine block EB, the radiator R, and the heater H of the vehicle engine E to a predetermined temperature, and the second flow path 20 When the temperature of the cooling water detected by the temperature sensor (HS) provided in the sight glass 25 of the () is about 70 ~ 80 ℃ or more keeps the third three-way valve (V3) in the off state, so the hot coolant to the pump 50 side It is not supplied, thereby protecting the pump 50 which is weak to heat due to the characteristics of the structure and the material. At this time, the vehicle engine E is preferably stopped.

When the temperature of the cooling water passing through the sight glass 25 on the second flow passage 20 is lower than the set temperature, the third three-way valve V3 is opened in an on state, thereby causing the second three-way valve V2 to open. And the third filter 23 is supplied to the pump 50 side, and from the pump 50, the first flow path 10 → the connection hose unit 60A → the radiator R → the first lower hose LH1 By returning to the water pump (the second) side of the vehicle engine (E) is circulated.

In this state, when the contamination of the cooling water passing through the sight glass 25 is to be cleaned, the end of the fourth passage 40 is placed in a washing liquid container (not shown) containing the washing liquid, and then the panel of the operation unit 103 is disposed. Turn on the fourth three-way valve (V4) at and temporarily turn on the second three-way valve (V2) for a predetermined time so that the cleaning liquid of the washing liquid container is sucked from the fourth flow passage (40), and The second three-way valve V2 is turned off to shut off. Since the subsequent process is the same as described in the cleaning process, a detailed description thereof will be omitted.

In particular, when the sixth to eighth three-way valves V6 to V8 are turned off, the coolant discharged from the pump 50 is sixth and eighth three-way valves V6 and V8 of the first flow path 10. It is supplied to the radiator (R) from the hose unit for connection (60A) through, the first lower hose (LH1) → engine block (EB) of the vehicle engine (E) → hose unit (60B) for connection from the radiator (R) Coupler 24 of the second flow passage 20 → seventh three-way valve (V7) → switching line 28 → sight glass 25 of the second flow passage 20 → fourth three-way valve (V4) → The first filter 21 → the second filter 22 → the check valve 26 → the first three-way valve V1 → the third three-way valve V3 → the second three-way valve V2 → the third filter 23 → it is circulated along the pump 50.

On the contrary, when the sixth to eighth three-way valves V6 to V8 are turned on, the cooling water discharged from the pump 50 is discharged to the sixth and seventh electric three-way valves V6 and the first flow path 10. V7) is supplied to the connecting hose unit 60B on the second upper hose TH2 → to the engine block EB of the vehicle engine E, and from the engine block EB of the vehicle engine E to the first. Lower hose (LH1) → radiator (R) → coupler (11) of the first flow path (10) through the connecting hose unit (60A) on the first upper hose (TH1) → sixth-way valve (V6) → second Sight glass (25) of flow path 20 → fourth three-way valve (V4) → first filter (21) → second filter (22) → check valve (26) → first three-way valve (V1) → third three way It is circulated through the valve V3 → the second three-way valve V2 → the third filter 23 → the pump 50.

In this way, the flow direction of the coolant discharged from the pump 50 can be easily changed to the forward and reverse flow direction only by the operation of the switch in the operation unit 103 on the upper surface of the exchange and cleaning device 100, thereby ensuring convenience of use. It can be.

The present invention can be cleaned and exchanged by circulating in the normal flow direction or the reverse direction of the coolant with a pump for generating pulsating discharge pressure, thereby effectively removing the scales attached to the engine blocks, radiators and inner walls of the heater. Applications to coolant cleaning and replacement systems for automotive engines are rich in industrial applicability.

1 is a block diagram schematically showing a cooling system of an existing automobile engine;

Figure 2 is a perspective view showing an exchange and cleaning device for a cooling water for a vehicle according to an embodiment of the present invention,

3 is a circuit diagram of FIG.

4 is a block circuit diagram schematically showing a state in which a device of the present invention is connected to a cooling system of an automobile engine;

5 is a circuit diagram showing in detail the device portion of the present invention in FIG.

6 is a circuit diagram showing a state in which the coupler of the first and second flow paths is changed and connected to the cooling system of the automobile engine in the apparatus for replacing and cleaning the cooling water for automobiles of the present invention;

7 and 8 are circuit diagrams showing other embodiments of the apparatus for replacing and cleaning a vehicle coolant according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: Euro 1 11:24: Coupler

12: bypass line 20: second euro

21: first filter 22: second filter

23: third filter 25: sight glass

26: check valve 27: air discharge valve

27a: valve body 27b: float

28: diversion line 30: third euro

40: fourth euro 50: pump

55: pressure gauge 60A, 60B: connection hose unit

61: fifth three-way valve 62,65: hose

63, 66: Coupler 64A, 64B, 64C: On-off valve

70: waste coolant 75: new coolant

V1 to V4: 1st to 4th three-way valves V6 to V8: 6th to 8th three-way valves

HS: temperature sensor

Claims (10)

A pump having a suction port and a discharge port; A first flow path having a coupler at an end thereof to extend from a discharge port of the pump and to be connected to a coupler on a flow path forming a cooling system on an automobile engine side; A coupler is provided at an end to be connected to the coupler on the flow path forming the cooling system of the vehicle engine side, and the first filter, the second filter, the first three-way valve, the second three-way valve, and the third filter are connected from the coupler to the pump. A second flow passage connected sequentially; A third passage connected to one port of the first three-way valve to discharge cooling water: A fourth flow passage connected to one port of the second three-way valve for supply of washing liquid or fresh cooling water; In the vehicle cooling water exchange and cleaning device comprising a, A third three-way valve is provided between the first three-way valve and the second three-way valve, and one port of the third three-way valve has a bypass line connected to the first flow path between the coupler at the end of the first flow path and the pump. Replacement and cleaning equipment for automotive cooling water. A pump having a suction port and a discharge port; A first flow path having a coupler at an end thereof to extend from a discharge port of the pump and to be connected to a coupler on a flow path forming a cooling system on an automobile engine side; A coupler is provided at an end to be connected to the coupler on the flow path forming the cooling system of the vehicle engine side, and the first filter, the second filter, the first three-way valve, the second three-way valve, and the third filter are connected from the coupler to the pump. A second flow passage connected sequentially; A third passage connected to one port of the first three-way valve to discharge cooling water: A fourth flow passage connected to one port of the second three-way valve for supply of washing liquid or fresh cooling water; In the vehicle cooling water exchange and cleaning device comprising a, Between the coupler at the end of the second flow path and the first filter, a sight glass for confirming the contamination level of the cooling water is added, and a fourth three-way valve is provided for converting the first three-way valve according to the pollution degree of the cooling water. Replacing and cleaning equipment for automotive cooling water. The method of claim 2, Between the second filter and the first three-way valve, the cooling water passing through the fourth three-way valve is flowed back to the second, first filter side, characterized in that a check valve for preventing contamination of the second, first filter is added. Car cooling water exchange and cleaning device. The method according to claim 1 or 2, The second flow path between the second filter and the first three-way valve is provided with an air discharge valve for extracting the air introduced when the cooling water is exchanged or the cleaning liquid is injected for cleaning, and the discharge port of the air discharge valve is provided with a third discharge port. Car cooling water exchange and cleaning device, characterized in that connected to the flow path. The method according to claim 1 or 2, The pump is an air pulsation pump or a diaphragm pump that can generate a pulsating discharge pressure, characterized in that the vehicle cooling water replacement and cleaning device. The method according to claim 1 or 2, The coupler at the end of the first and second flow paths, the connection and cooling unit for the vehicle cooling water, characterized in that the connection hose unit is added to switch the cooling water flow path of the vehicle engine. The method of claim 6, The connecting hose unit is provided with an intermediate fifth three-way valve, the hose is connected to each port of the fifth three-way valve, and the coupler is provided at each end of the hose, respectively, the replacement and cleaning device for the cooling water for the vehicle . The method of claim 6, The connecting hose unit has three open and close valves connected in three directions in the middle, the hose is connected to each of the outer port of the open and close valves, the hose end is a coupler is provided for each of the car cooling water exchange and cleaning device, characterized in that . The method of claim 2, A temperature sensor is provided at an arbitrary position on the second flow path, and the third three-way valve is provided with an electric valve so as to be automatically switched by the operation unit in response to the detection signal of the temperature sensor. . 10. The method of claim 9, The sixth three-way valve is provided in the first flow path between the coupler and the pump at the end of the first flow path, and the seventh three-way valve is provided in the second flow path between the coupler and the sight glass at the end of the second flow path. The eighth three-way valve is provided in the first flow path between the pump and the pump and is branched from the eighth three-way valve to the sixth and seventh three-way valves, and one port of the sixth three-way valve is switched between the seventh three-way valve and the sight glass. Car cooling water exchange and cleaning device, characterized in that the line is connected.

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