JPH08109826A - Cooling liquid charging device - Google Patents

Abstract

PURPOSE: To easily charge cooling liquid by suctioning air inside a cooling system while utilizing suctioning force which is generated when fluid passes a charging device main body with high speed, and charging cooling liquid while keeping a negative pressure state inside the cooling system. CONSTITUTION: A cooling liquid supply passage, a fluid passage and a passage changeover part 19 are arranged on a charging device main body 11 connected to a charging port of a cooling system through a plug 16, so that a cooling liquid charging device is composed. Namely, a connection port 20 and a discharge port 22 of an air supply pipe 30 and a connection port 21 of a cooling liquid supply pipe 31 are formed on the side part of the charging device main body 11. Air supplied to the connection port 20 is discharged from the discharge port 22 through an air reservoir 23, an air discharge passage 25 and a nozzle orifice 24. The cooling liquid supplied to the connection port 21 is charged into the cooling system through a charging passage 26. When a pressure gauge 27 detects that inside of the cooling system shows a negative pressure, a changeover lever 28 is operated for opening and closing the passage changeover part 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling liquid filling device for filling a cooling liquid with a negative pressure inside the cooling system. More specifically, the present invention relates to a cooling liquid filling device that enables easy filling of the cooling liquid even in a general automobile maintenance shop or a gas station.

[0002]

2. Description of the Related Art Conventionally, as a cooling liquid filling device, one having a vacuum pump for making a cooling system a vacuum and a liquid supply pump for filling a cooling liquid in a vacuuming cooling system is used.
For example, the filling device 1 shown in FIG. 8 includes a vacuum pump 5 for vacuumizing a cooling system such as a radiator 2, an engine 3, and a car heater 4, and a vacuum tank 7 provided with a recovery tank 6, which is provided with an inlet 8 of the radiator. Is connected to the water supply gun 9 to form a vacuum circuit, and an antifreeze liquid supply pipe 10, a water supply pipe 11, a weighing machine 12, and a mixing tank 1
3 and the liquid supply pump 14, which are also mounted on the water supply gun 9 to form a liquid supply circuit for filling the cooling system with the cooling liquid after evacuation.

[0003]

As described above, the filling device for vacuuming to fill the cooling system with the cooling liquid is as follows.
It is a very expensive equipment that includes a vacuum pump, an antifreeze liquid supply pipe, a water supply pipe, a weighing machine, a mixing tank, etc. The filling device is used only in places where it is frequently used, such as when it is used to exchange cooling liquid in a large-scale automobile mechanic factory, etc. Was not placed in.

However, the cooling liquid filled in the automobile is
For the reason that sufficient performance will not be exhibited due to exhaustion of rust preventive additives in the cooling liquid, it is recommended to replace it in a passenger car, for example, for two years or when it reaches a mileage of 40,000 km. There is. Further, although it is possible to add a strengthening agent to the cooling liquid that has reached the replacement time to restore the performance and delay the replacement time to some extent, the cooling liquid must be replaced after one year or two years. Further, in the case of commercial vehicles such as trucks, there are many cases in which the vehicle is maintained and managed by exchanging the cooling liquid voluntarily when the set period or distance is reached. Under such circumstances, there has been a demand for easy replacement of the cooling liquid at a familiar automobile maintenance shop or a gas station.

The present invention has been made in order to meet such a demand, and it is an object of the present invention to provide a cooling liquid filling device which can easily fill the cooling liquid even in a general automobile maintenance factory or a gas station. It is intended.

[0006]

In order to achieve the above object, the invention according to claim 1 is a "cooling liquid filling device for filling a cooling liquid with a negative pressure inside the cooling system,
A cooling liquid supply path through which a cooling liquid from the outside passes to the injection port, and a nozzle orifice through which a fluid such as air or water from the outside passes through a filling device body connected to the injection port of the cooling system. And a fluid passage through which the air sucked from the inside of the cooling system by the suction force generated with the passage of the fluid is discharged to the outside together with the fluid from the outside, and the cooling liquid supply passage and the fluid passage. The cooling liquid filling device is characterized in that it has a passage switching unit for switching.

The gist of the invention according to claim 2 is "a cooling liquid filling device characterized in that a pressure gauge for displaying the air pressure inside the cooling system is arranged in the fluid passageway".

The gist of the invention according to claim 3 is "a cooling liquid filling device characterized in that the passage switching portion is opened and closed by a switching operation of a switching lever attached to the filling device main body".

According to a fourth aspect of the present invention, the "passage switching portion moves into and out of the cooling liquid supply passage and the first cylinder having a supply passage communication window for opening and closing the same supply passage and the same passage in and out of the fluid passage passage. A second cylinder having a passage communication window that opens and closes the passage, and the first cylinder and the second cylinder are provided in the supply passage by a switching operation of a switching lever attached to the ends of the first cylinder and the second cylinder. Alternatively, the cooling liquid filling device is characterized in that it is configured to go in and out of a passage.

[0010]

In the cooling liquid filling device according to claim 1, when the filling device main body is connected to the inlet of the cooling system, the passage for injecting the cooling liquid into the cooling system and the air from the inside of the cooling system are provided. A fluid passage for discharging to the outside is formed. A fluid supply pipe such as air or water is connected to the filling device main body, and the fluid supplied by this fluid supply pipe passes through a nozzle orifice provided in the filling device main body to accelerate at high speed. The air inside the cooling system is sucked by the suction force generated at this time and discharged to the outside of the filling device main body together with the fluid from the outside.

When the inside of the cooling system is in a negative pressure state in this manner, the fluid passage is closed by opening and closing the passage switching portion and the cooling liquid supply passage is opened to establish communication with the inside of the cooling system. The cooling liquid is supplied by a cooling liquid supply pipe connected to the filling device main body, and the cooling liquid is filled into the inside of the cooling system from the inlet of the cooling system through the filling device main body.

In the cooling liquid filling apparatus according to the second aspect of the present invention, the pressure inside the cooling system is displayed by the pressure gauge arranged in the fluid passage, and the inside of the cooling system is in a negative pressure state. When the temperature becomes low, the passage switching section is promptly operated to bring the cooling liquid supply passage into communication with the inside of the cooling system so that the cooling liquid can be filled.

In the cooling liquid filling device according to the third aspect, the passage switching portion can be opened and closed by switching the switching lever attached to the filling device main body.

In the cooling liquid filling device according to the fourth aspect, the first cylinder is moved into and out of the cooling liquid supply passage by the switching operation of the switching lever, and the supply passage is closed.
Moreover, the second cylinder is moved in and out of the fluid passage, and the passage communication window is opened in the passage to open the passage.
As a result, the air inside the cooling system is sucked, and is discharged to the outside of the filling device main body together with the fluid from the outside.

In this way, when the inside of the cooling system is in the negative pressure state, the second operation is performed by the switching operation of the switching lever.
The cylinder is moved in and out of the fluid passage to close the passage, and the first cylinder is moved in and out of the coolant supply passage to open the supply passage communication window to the supply passage to open the supply passage. To do. Thereby, the cooling liquid is supplied by the cooling liquid supply pipe, and the cooling liquid is filled into the inside of the cooling system from the inlet of the cooling system through the filling device main body.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cooling liquid filling apparatus according to the present invention, as shown in FIGS. 1, 2, 3 and 4, has a radiator 12 and an engine 1.
3, the filling device main body 11 connected to the injection port 15 of the cooling system such as the car heater 14 through the connection plug 16 is provided with the cooling liquid supply passage, the fluid passage passage, and the passage switching portion 19. The filling device main body 11 has a box shape, and on one side thereof, an air supply pipe connection port 20 to which an air supply pipe 30 is connected and a cooling liquid supply pipe connection port 21 to which a cooling liquid supply pipe 31 is connected and the air. A discharge port 22 through which air from the supply pipe 30 is discharged is provided. In this embodiment, a muffler 26 is attached to the discharge port 22 for suppressing noise generated when the air is discharged. A connection plug 16 made of a flexible pipe material such as rubber is attached to the lower surface of the filling device main body 11 and is press-fitted into the injection port 15 of the radiator 12.

The fluid passage includes an air supply pipe connection port 20,
Air reservoir 23, air discharge path 25, nozzle orifice 24, air suction path 27, discharge port 22, and injection path 26
It consists of Inside the filling device body 11,
An air reservoir 23 is arranged inwardly at the air supply pipe connection port 20.
Air from the air is accumulated in the air reservoir 23, and the air discharge path 2
5 to the nozzle orifice 24, which is accelerated at a high speed by the nozzle orifice 24.
It is designed to be discharged to the outside of the filling device main body 11 through the discharge port 22 following. The air suction path 27 is connected to an injection path 26 that reaches the injection port 15 of the radiator 12 through the path switching unit 19, and is generated when air from the outside passes through the filling device main body 11 at a high speed. Due to the suction force, the air inside the cooling system is sucked through the injection passage 26 and is discharged to the outside through the discharge passage 22 together with the air from the outside.

Further, a pressure gauge 27 is arranged in the fluid passage to display the pressure inside the cooling system. Then, when the inside of the cooling system is in a negative pressure state, the switching lever 28 attached to the filling device main body 11
Switching operation of the fluid passage passage opens and closes the passage switching portion 19 disposed in the injection passage 26 of the fluid passage passage to close the fluid passage passage and open the cooling liquid supply passage, so that the cooling liquid supply passage is connected to the inside of the cooling system. It is possible to establish a communication state.

The cooling liquid supply passage is provided with a cooling liquid supply pipe connection port 21.
And an injection path 26. Filling device body 11
Inside, a cooling liquid supply pipe connection port 21 to which the cooling liquid supply pipe 31 is connected is communicated with an injection path 26 that leads to the injection port 15 of the radiator 12 via the passage switching unit 19 to supply the cooling liquid. The cooling liquid from the pipe 31 is filled into the cooling system through the cooling liquid supply pipe connection port 21 and the injection passage 26.

In the above embodiment, the fluid passage 1
Although air was used as the fluid passing through the inside of the container 8, this may be replaced with a fluid such as water.

Although FIGS. 1 to 4 show a mode in which a cooling liquid supply passage, a fluid passage and a passage switching portion are provided in the main body of the filling device, the present invention is not limited to this, and FIGS. It is also possible to adopt a mode in which a part of the fluid passage is attached to the main body of the filling device as shown in FIG. In the filling device shown in FIGS. 5 to 7, the cooling liquid supply passage is composed of a cooling liquid supply pipe connecting port 61 and an injection passage 66, and a supply passage that opens and closes the cooling liquid supply passage. A first cylinder 67 having a communication window (not shown) comes in and out. Also,
The fluid passage is composed of an air supply pipe connection port 60, a nozzle orifice 64, an air discharge passage 65, a discharge port 62, and an injection passage 66. The passage passage communication for opening and closing the passage is provided in the fluid passage. A second cylinder 68 having a window (not shown) comes in and out. Then, the supply passage and / or the passage passage is opened / closed by the switching operation of the switching lever 69 attached to the ends of the first cylinder 67 and the second cylinder 68, so that the suction of the air and the filling of the cooling liquid inside the cooling system are performed. It has become.

The first cylinder 67 and the second cylinder shown in FIGS.
FIG. 5 shows a state in which both the fluid passage and the cooling liquid supply passage are closed in the filling device having the passage switching portion including the cylinder 68. From this state,
As shown by the arrow in FIG. 6, the first cylinder 67 is moved in and out of the cooling liquid supply passage by the switching operation of the switching lever 69, the same supply passage is closed, and the second cylinder 68 is moved in and out of the fluid passage. Then, a passage communication window (not shown) is opened to the passage and the passage is opened. As a result, the air inside the cooling system is sucked, and is discharged to the outside of the filling device body 70 together with the fluid from the outside.

When the inside of the cooling system is in the negative pressure state in this way, as shown by the arrow in FIG.
The second cylinder 68 is moved into and out of the fluid passage by closing the passage, and the first cylinder 67 is moved in and out of the coolant supply passage by a switching operation of the above, and a supply passage communication window (not shown) is opened. The supply path is opened by opening to the same supply path. As a result, the cooling liquid is supplied by the cooling liquid supply pipe (not shown), and the cooling liquid is filled into the inside of the cooling system through the filling device main body 70 and the injection port 63 of the cooling system.

In addition to the passage switching portion including the first cylinder and the second cylinder, for example, the actual fairness 3
The passage may be closed or opened by using an opening / closing valve such as a solenoid valve shown in No. 35847.

[0025]

In the cooling liquid filling device according to the first aspect of the present invention, the suction force generated when a fluid such as air or water passes through the filling device main body at high speed is used to clean the air inside the cooling system. The cooling liquid is sucked and filled with the cooling liquid in a negative pressure state, so that the cooling liquid can be easily filled even in a general automobile repair shop or a gas station where a compressor or the like is placed.

In the cooling liquid filling apparatus according to the second aspect, the pressure inside the cooling system is displayed by the pressure gauge arranged in the fluid passage, and the inside of the cooling system is in a negative pressure state. When the temperature becomes low, the passage switching unit can be promptly operated to bring the cooling liquid supply passage into communication with the inside of the cooling system to efficiently fill the cooling liquid.

In the cooling liquid filling device according to the third aspect, the passage switching portion is opened / closed by one-touch operation by switching the switching lever attached to the filling device main body to suck and cool the air inside the cooling system. The liquid filling can be switched.

In the cooling liquid filling device according to the fourth aspect of the present invention, the passage switching part formed of the first cylinder and the second cylinder is provided in the supply passage by switching the switching lever attached to the filling device main body. Since it is made to go in and out of the passage to block or open the supply passage or the passage to suck the air in the cooling system and fill the cooling liquid, the passage can be switched more reliably.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire cooling liquid filling device of the present invention.

FIG. 2 is a sectional view taken along line AB in FIG.

FIG. 3 is a sectional view taken along the line CD in FIG.

FIG. 4 is a schematic diagram showing a state in which the cooling liquid filling device of the present invention is connected to a cooling system.

FIG. 5 is a sectional view showing another embodiment of the cooling liquid filling device of the present invention, showing a state in which both the fluid passage and the cooling liquid supply passage are closed.

FIG. 6 is a sectional view showing another embodiment of the cooling liquid filling apparatus of the present invention, showing a state in which the fluid passage is opened and the cooling liquid supply passage is closed.

FIG. 7 is a sectional view showing another embodiment of the cooling liquid filling device of the present invention, showing a state in which the fluid passage is closed and the cooling liquid supply passage is opened.

FIG. 8 is a schematic diagram showing a state in which a conventional cooling liquid filling device is connected to a cooling system.

[Explanation of symbols]

 11, 70 ... Filling device main body 15, 63 ... Injecting port 16 ... Connection plug 19 ... Passage switching unit 20, 60 ... Air supply pipe connecting port 21, 61 ... Cooling liquid supply Pipe connection port 22, 62 ... Ejection port 24, 64 ... Nozzle orifice 26, 66 ... Injection path 27 ... Pressure gauge 28, 69 ... Switching lever

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiro Keido 7-148, Hachiken, Ginan-cho, Hashima-gun, Gifu Prefecture CSI Inc.

Claims (4)

[Claims] 1. A cooling liquid filling device for filling a cooling liquid with a negative pressure inside the cooling system, wherein a cooling liquid from the outside passes through a filling device main body connected to an inlet of the cooling system. It has a cooling liquid supply path leading to the injection port and a nozzle orifice through which a fluid such as air or water from the outside passes, and the air sucked from the inside of the cooling system by the suction force generated by the passage of the fluid is A cooling liquid filling device comprising: a fluid passage that is discharged to the outside together with a fluid from the outside; and a passage switching unit that switches between the cooling liquid supply passage and the fluid passage. 2. The cooling liquid filling device according to claim 1, wherein a pressure gauge for displaying the air pressure inside the cooling system is arranged in the fluid passage. 3. The cooling liquid filling device according to claim 1, wherein the passage switching portion is opened and closed by a switching operation of a switching lever attached to the filling device main body. 4. A first cylinder having a supply passage communication window that opens and closes the cooling liquid supply passage to open and close the supply passage, and a passage that opens and closes the fluid passage to open and close the passage. It is composed of a second cylinder having a passage communication window, and these first cylinder and second cylinder move in and out of the supply passage or the passage by the switching operation of the switching levers attached to the ends of the first cylinder and the second cylinder. The cooling liquid filling device according to claim 1 or 3, wherein the cooling liquid filling device is configured to.