JPS6029805B2 - Engine coolant injection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine cooling water injection device for injecting cooling water into a radiator.

Conventionally, when cooling water is injected into the radiator of various automobiles, there is a problem in that the cooling water cannot be easily and quickly injected due to the air inside the radiator. Therefore, a device is being considered that creates a vacuum inside the radiator and injects cooling water. However, in recent years, many types of cooling water have been produced.For example, cooling water with different concentrations of antifreeze is used depending on the performance of various automobiles or the environment such as temperature and temperature of the place where it is used. In case of an injection device that forcibly injects cooling water, if the injected cooling water remains in the injection pipe etc., then when a different type of cooling water is injected,
Since two types of cooling water are mixed and injected into the radiator, there is a problem that cooling water of a predetermined concentration is not injected.

The present invention has been made in view of these points, and uses a vacuum pump to suck air in the radiator through a suction pipe, and at the same time injects cooling water through an injection pipe, it is possible to easily and quickly supply cooling water. On the other hand, by transporting the suction pipe and the injection pipe after injection and recovering the cooling water in the injection pipe and the suction pipe using the suction force, it is possible to prevent the two types of cooling water from mixing. The present invention provides a cooling water injection device for an engine.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings.

As shown in the drawings, 1 is an engine cooling water injection device for injecting cooling water into a radiator 2 of various automobiles;
cooling water injection tanks 4a, 4b, 4c, 4d, 4e having respective mixed systems 3a, 3b, 3c, 3d, 3e;
It is composed of an injection system 5 that injects the cooling water in the injection tanks 4a, 4b, 4c, 4d, and 4e into the radiator 2, a suction system 6 that sucks the air inside the radiator 2, and an air control system 7. There is.

The injection tanks 4a, 4b, 4c, 4d, 4e are connected to the water storage tanks 8a, 8b, 8c, 8d, 8e and each mixing system 3a, 3b.
, 3c, 3d, and 3e are connected, and five water storage tanks 8a, 8b, 8c, 8d, and 8e are arranged in parallel.

Mixing systems 3a, 3b, 3c, 3d, and 3e are mixed tanks 9
a, 9b, 9c, 9d, 9e are water storage tanks 8a, 8b,
Five systems are installed in parallel above 8c, 8d, 8e, and the lower part of mixing tank 9a, 9b, 9c, 9d, 9e and the upper part of water storage tank 8a, 8b, 8c, 8d, 8e are connected to connecting pipe 1.
It is constructed by being connected by rivers. Mixing tank 9a,
9b, 9c, 9d, and 9e are water and antifreeze solution or water and antirust solution mixed to provide predetermined cooling water, for example, mixing tanks 9a, 9
b, gc and 9d have antifreeze concentrations of 50% and 45%
, 35% and 20% cooling water, the mixing tank 9e adjusts the cooling water containing anti-rust liquid, and further separately adjusts four types of cooling water with different concentrations of antifreeze. The water supply pipe 12 is branched into five branch pipes via a stop valve 11 connected to the water supply pipe 11, and is connected to each of the five branch pipes via a first switching valve 13. Four more mixing tanks 9a, 9
b, 9c, and 9d, an antifreeze supply pipe 15 is branched into four branch pipes via a stop valve 14 connected to an antifreeze supply source, and each is connected via a first control valve 16. A rust preventive liquid supply pipe 18 is connected to the first switching valve 1 through a stop valve 17 connected to a rust preventive liquid supply source to the two mixing tanks 9e.
It is connected via 9. In addition, each mixing tank 9a,
A plurality of liquid level detectors 20 are provided in each of 9b, gc, 9d, and 9e to detect the liquid level, and each liquid level detector detects the inflow amount and adjusts the cooling water at a predetermined concentration. .
The water storage tanks 8a, 8b, 8c, 8d, and 8e store various types of cooling water adjusted in the mixing tanks 9a, 9b, 9c, 9d, and 9e so as to be injected into the radiator 2. Connecting pipe 10
The second switching valve 10a is provided in the center, and the second switching valve 10a is a two-boat, two-position type, air-operated and spring return type, and the first switching valve 13, 16, 19 is a 2-boat, 2-position type with air pilot operation, solenoid control, and spring return type.

The configuration of the injection system 5 includes a first lotus mechanism 21 and an injection pump 2.
2. The third sliding valve 23 and the injection valve 24 are sequentially connected by an injection pipe 25, and one end of the injection pipe 25 is connected to the water storage tanks 8a, 8.
b, 8c, 8d, 8e, and the pond end is connected to radiator 2.
It is detachably connected to the

The injection pump 22 pumps cooling water to the radiator 2 side, and is linked to a motor 26. A sub-injection pipe 27 is branched from between the injection pump 22 and the third switching valve 23,
The sub-injection pipe 27 sequentially connects the fourth switching valve 28 and the stop valve 29, and its end is detachably connected to the sub-tank 30'. The third and fourth sliding valves 23 and 28 are 2 ports 2
It is a position type with air pilot operation, solenoid control, and spring return type. In addition, the first lotus passage mechanism 21 includes injection branch pipes 31a, 31b, 31c, 31d, and injection branch pipes 31a, 31b, 31c, 31d,
One end of 31e is connected, and injection branch pipes 31a, 31b, 3
The other ends of 1c, 31d, 31e are connected to the collecting pipe 32, and the injection branch pipes 31a, 31b, 31c, 31d, 3
A fifth sliding door valve 33 is provided in the center of 1e. The fifth switching valve 33 includes water storage tanks 8a, 8b, 8c,
8d, 8e and the injection pipe 25, it is a 2-boat, 2-position type, with air pilot operation, solenoid control, and spring return type. Furthermore, a release valve 34 is reinforced at the end of the collecting pipe 32, and the release valve 34
is a two-boat, two-position type that opens the inside of the concentration pipe 32, injection pipe 25, and sub-injection pipe 27 to the atmosphere, and is operated by a pilot.
It is a solenoid controlled/spring return type. The suction system 6 includes a vacuum pump 35 and a water droplet removal tank 36.
, the sixth switching valve 37, the recovery tank 38, the check valve 39, and the injection valve 24 are connected one after the other by a suction pipe 40, and the terminal end is detachably connected to the radiator 2.

A vacuum pressure switch 41 is connected between the water droplet removal tank 36 and the sixth cut valve 37, and a seventh cut valve 42 and a stop valve 43 are connected to the water drop removal tank 36 by a discharge pipe 44. The recovery tank 38 is equipped with a liquid level gauge 45 inside, and the cooling water is sucked and stored.
A, 9b, 9c, 9d, 9e is located above, and the second lotus passage mechanism 4 is located in the water storage tank 8a, 8b, 8c, 8d, 8e.
6, the liquid level of the sucked cooling water is detected by a liquid level gauge 45, and the injection valve 24 is operated. The sixth sliding door valve 37 is a 3-boat, 2-position type, pilot-operated by air, solenoid controlled, and spring-reset type, to which the air control system 7, which will be described later, is connected, and the suction pipe 40 is passed through the valve at the right position. At the left position, the suction pipe 40 on the side of the recovery tank 38 and the air control system 7 are passed through each other to forcefully feed air to the recovery tank 38. Seventh switching valve 42
is a 3-boat, 2-position type, pilot operated by air.
It is a solenoid controlled type. 47 is a vacuum pump 35
It is a motor linked to the

The injection valve 24 includes a switching valve 48 and a check valve 49, and has an injection passage 50 and a branch passage 51 whose one end is connected to the injection passage 50 and the other end is connected to the opening valve 48. A vacuum pump side suction passage 52 and a radiator side suction passage 53 are formed.

Both ends of the injection passage 50 are connected to the injection pipe 25, respectively,
The injection pipe 25 and the radiator 2 are kept in constant communication, and a suction pipe 40 is connected to both suction passages 52 and 53. The flap valve 48 is a 3-port 2-position type, has a manual handle 54, and connects the vacuum pump-side suction passage 52 and injection passage 50 in the starboard layer, and connects the vacuum pump-side suction passage 52 and the injection passage 50 in the left position. and the radiator side suction passage 53,
When the liquid level gauge 45 detects the liquid level, it is moved to the right position. The check valve 49 is connected to a branch passage 51 in the injection passage 5.
is interposed on the radiator 2 side from the connection part of the radiator 2.
Only distribution to the side is permitted. Second Rentsu mechanism 46
The configuration includes an intermediate tank 55 above the water storage tanks 8a, 8b, 8c, 8d, and 8e, a first recovery pipe 56 connecting the lower part of the recovery tank 38 and the upper part of the intermediate tank 55, and the center of the first recovery pipe 56. an eighth switching valve 57 provided at the bottom of the intermediate tank 55;
8, and water storage tanks 8a, 8b, 8c, 8d, 8e from each of the discharge ports.
It consists of a second recovery pipe 60 etc. connected to one of the pipes.

The eighth switching valve 57 is of a two-boat, two-position type, and is of an air operated/spring return type. The configuration of the air control system 7 consists of the following systems.

A stop valve 61 and a filter 62 supported by an air source,
A system 6a in which a relief valve 63 and a lubricator 64 are sequentially connected by a control pipe 65, which branches off from the lubricator 64 to a third switching valve 23, a fourth switching valve 28, and five fifth switching valves 33.
, a control pipe 67 is connected to each pilot valve of the seventh switching valve 42, the five first control valves 66, and the operation boat of the second switching valve 10a.
The system 6b connected with the first switching valve 13, 16, 1
9 and the pilot valve of the sixth switching valve 37, the second control valve 68
, a system 6c in which both boats of the air cylinder 59, the third control valve 69, and the operation boat of the eighth switching valve 57 are connected by a control pipe 70. System 6b has each sliding valve 23, 28, 3
3, 42, 10a, and the system 6c has each sliding valve 13, 16,
Control air is supplied to each of the air cylinders 19, 37, 57 and the air cylinder 59. In the air pressurization system 71, a supply pipe 72 is branched from between the stop valve 61 and the filter 62, and the supply pipe 72 is connected to the supply boat of the sixth sliding valve 37, and pressurizes the recovery tank 38 with air. It is something to do.

The first control valve 66 is a 3-boat, 2-position type, pilot-operated
The solenoid controlled type, the second control valve 68 is a 5 boat 2 position type, the solenoid controlled type, the third control valve 69 is a 5 boat 2 position type, and if it is a pilot operated/solenoid controlled type, then The operation will be explained.

First, when a car is transferred, switches of necessary electrical control systems (not shown) are closed depending on the amount of cooling water to be injected. Subsequently, the injection valve 24 is attached to the radiator 2, the injection pipe 25 and the suction pipe 40 are connected to the radiator 2,
When the start button (not shown) is pressed, the sixth switching valve 37 is switched to the right position (position in the drawing), and at that time, the eighth switching valve 57 is switched to the right position (position in the drawing).
The seventh switching valve 42 is in the cutoff state, the switching valve 48 is operated to the left position (the drawing shows the right position), the vacuum pump 35 and the radiator 2 communicate with each other, and the vacuum pump 35 is driven. , the air inside the radiator 2 is sucked. After that, when a certain degree of vacuum is detected by the vacuum pressure switch 41 (approximately 5 seconds when using timer control), something in the fifth switching valve 33 corresponding to the cooling water of a predetermined concentration is set to the operating position by solenoid control. Switch. Simultaneously with the switching operation of the fifth switching valve 33, the third switching valve 23 is also switched to the lotus position, and the water tank 8a, 8b, 8c, 8d, or 8e to which the operated fifth switching valve 33 is connected is connected. chisel and radiator 2
communicate with. At this time, the other fifth switching valve 33 and release valve 34 are in the cutoff position, and cooling water is injected into the radiator 2 by driving the injection pump 22. When the cooling water of the radiator 2 becomes full (approximately 2 parts of sand), the suction pipe 40
Cooling water is sucked into the tank 8, and a large amount is sucked in after the tank is full. Therefore, when the liquid level gauge 45 detects that the cooling water in the recovery tank 38 has reached a certain level, the fifth switching valve 33
is switched to the cutoff position, and the release valve 34 is switched to the open position to open the inside of the collection pipe 32 and the injection pipe 25 to the atmosphere. Furthermore, the switching valve 48 of the injection valve 24 is switched to the right position, the injection pipe 25 and the suction pipe 40 are short-circuited, and the cooling water in the concentration pipe 32, the injection pipe 25, and the suction pipe 40 is passed through the suction pipe 40. Suction into the collection tank 38 and hold for about 1 hour, each pipe 3
Suction the remaining cooling water from 2, 25, and 40. At that time, remove the injection valve 24 from the radiator 2 and
Then, the suction pipe 40 is removed and the car is moved. Subsequently, the eighth switching valve 5 is activated to recover the cooling water in the recovery tank 38.
At the same time, switch the sixth switching valve 37 to the left position, open the outlet that communicates with the water storage tank 8a, 8b, 8c, 8d, or 8e corresponding to the cooling water by operating the air cylinder 59, and switch the sixth switching valve 37 to the left position. recovery tank 38 by switching to
By applying air pressure to the intermediate tank 55, cooling water is forced into the intermediate tank 55.
The water is stored in a water storage tank 8a, 8b, 8c, 8d, or 8e via a water storage tank 8a, 8b, 8c, 8d, or 8e. The recovery operation is completed with approximately 1 part of the present sand, and one injection operation is completed. Repeat the above operation to the jetter 2 of the next car. In addition, in this embodiment, the second switching valve 1
0a is normally in the transportation position, and mixing tanks 9a, 9b,
When 9c, 9d, and 9e are empty, they switch to the cutoff position,
Various types of cooling water are prepared by operating the first switching valves 13, 16, 19, etc. When the mixing operation is completed, the system switches to the open position again, and the cooling water is stored in the water storage tanks 8a, 8b, 8c, 8d, and 8e. Furthermore, in this embodiment, the cooling water in the recovery tank 38 is forcibly recovered into the injection tanks 4a, 4b, 4c, 4d, and 4e using air, but there is a lot of time left due to car replacement work, etc. If there is,
It may be possible to collect it even if it falls naturally, in which case,
The sixth sliding valve 37 opens the suction pipe 40 to the atmosphere. Furthermore, it is preferable that the release valve 34 be provided as close as possible to the fifth sliding valve 33 so that all of the cooling water in the injection pipe 25 can be recovered.

Further, the number of injection tanks 4a, 4b, 4c, 4d, and 4e may be increased or decreased as necessary.

As described above, according to the engine cooling water injection device of the present invention, the air inside the radiator is sucked by the vacuum pump through the suction pipe, and a predetermined amount of cooling water is injected through the injection pipe. Since the injection pipe and the suction pipe are short-circuited and the cooling water in the injection pipe and the suction pipe is collected into the collection tank using the above-mentioned suction force, the cooling water can be easily and quickly injected. , the workability of injection is greatly improved.

In addition, since no cooling water remains in the injection pipe or suction pipe,
Since different types of cooling water do not mix, it is possible to inject cooling water with an accurate predetermined concentration into the radiator, and furthermore, the cooling water in the injection pipe and suction pipe can be recovered by simply switching the injection valve. It is extremely easy to work with.

[Brief explanation of drawings]

The drawing shows an embodiment of the present invention, and is a schematic diagram of a cooling water injection device. 1... Cooling water injection device, 2... Radiator, 4a, 4b, 4c, 4d, 4e... Injection tank, 5... Injection system, 6 ...Suction system, 8a, 8b, 8c, 8d, 8e...Water tank, 9a, 9b, gc, 9d, 9e...Mixing tank, 21... 1st Transportation Organization, 22...
・Injection pump, 24... Injection valve, 25...
... Injection pipe, 31a, 31b, 31c, 31d, 31e
...Injection branch pipe, 32...Integration pipe, 33
...5th switching valve, 34... Release valve, 3
5...Vacuum pump, 37...6th switching valve, 38...Recovery tank, 40...Suction pipe, 45...Liquid level gauge , 46... Second transportation mechanism, 48... Switching valve, 49... Check valve, 55... Intermediate tank, 56... First recovery pipe, 6
0...Second collection pipe.

Claims (1)

[Scope of Claims] 1. A plurality of mixing tanks that mix antifreeze and water to create cooling water with different concentrations of antifreeze, and cooling water that is provided in the same number as the mixing tanks and connected to the mixing tanks and injected into the radiator. A water storage tank that stores water, an injection pump that injects the cooling water in the water storage tank into the radiator when driven, an injection pipe that sequentially connects the water storage tank, the injection pump, and the radiator; A vacuum pump that sucks air or cooling water, a recovery tank that recovers the cooling water sucked by the vacuum pump, a suction pipe that sequentially connects the vacuum pump, the recovery tank, and the radiator, and the recovery tank and each of the above. A recovery pipe that connects the water storage tanks is provided between the water storage tank and the injection pump, and one of the plurality of water storage tanks is selected and the selected water storage tank is connected to the water storage tank. A first communication mechanism that allows only the injection pipe to communicate with the radiator and shuts off the communication injection pipe when the amount of water in the recovery tank reaches a certain amount after injecting cooling water into the radiator; a second communication mechanism that connects the recovery pipe between the collected water storage tank and the recovery tank; and a second communication mechanism provided in the injection pipe downstream of the first communication mechanism, and when the first communication mechanism enters the cutoff state, the injection An on-off valve that opens the inside of the pipe to the atmosphere is installed between the injection pump and the radiator in the injection pipe, and between the recovery tank and the radiator on the suction pipe, and the on-off valve opens the inside of the injection pipe to the atmosphere. The injection valve short-circuits the injection pipe and the suction pipe when opened, and causes the cooling water in the injection pipe and the suction pipe to be collected into a recovery tank and the selected water storage tank via the recovery pipe. Engine cooling water injection device. 2. The engine cooling water injection device according to claim 1, wherein the injection valve includes a check valve that prevents backflow of cooling water in the radiator. 3. The recovery tank is equipped with a liquid level gauge that detects the internal liquid level, and when the liquid level rises, the injection valve short-circuits the injection pipe and the suction pipe, and the cooling water in the injection pipe and suction pipe is sucked out. 2. The engine cooling water injection device according to claim 1, wherein the sucked cooling water is discharged into the injection tank via a recovery tank.