KR0120411B1 - Exchange apparatus of engine cooling water - Google Patents

Abstract

The present invention is an apparatus for exchanging engine coolant, such as LCC (Long Pipe Current) in an engine coolant system furnace including a radiator, comprising: a coolant storage means having a pressure action port and a liquid inlet and a detachable means detachable from a filler port of a radiator; When the coolant of the engine coolant system and the communication means communicating the liquid inlet and the detachable means are extracted, the negative pressure is applied to the pressure action port so as to superheat the coolant at low temperature by driving the engine and at the same time supplying a new coolant. The present invention relates to an engine coolant exchange device capable of quickly exchanging a coolant in a short time without providing a pressure acting means for applying a positive pressure to the radiator drain cock and requiring a vehicle jacky-up.

Description

Engine coolant exchanger

1 is a system diagram showing a first embodiment of the engine coolant exchange apparatus of the present invention.

2 is a perspective view of the engine coolant exchange device of FIG.

3 is an explanatory diagram at the time of the negative pressure action by the air ejector.

4 is an explanatory diagram in the case of the static pressure action by the air ejector.

5 is an explanatory diagram at the time of extracting coolant.

6 is an explanatory diagram when supplying a new coolant.

7 is an explanatory diagram at the time of extracting the coolant of the apparatus provided with the thermal start valve of the inlet control type.

8 is an explanatory diagram at the time of extracting the coolant in the second embodiment of the engine coolant exchange device of the present invention.

9 is an explanatory diagram at the time of collecting the coolant in the second embodiment.

10 is an explanatory diagram when supplying a new coolant of a second embodiment.

Fig. 11 is an explanatory diagram at the time of extracting the coolant in the third embodiment of the engine coolant exchange device of the present invention.

12 is an explanatory diagram at the time of supplying a new coolant of the third embodiment.

Fig. 13 is an explanatory diagram at the time of extracting the coolant in the fourth embodiment of the engine coolant exchange device of the present invention.

14 is an explanatory diagram at the time of supplying a new coolant of the fourth embodiment.

Fig. 15 is an explanatory diagram showing a direct suction member.

FIG. 16 is an enlarged cross-sectional view of FIG. 15. FIG.

FIG. 17 is an explanatory diagram showing a flexible suction member. FIG.

18 is an explanatory diagram showing cooling liquid suction means from the lower tank;

19 is an explanatory diagram showing cooling liquid suction means from a reservoir tank;

* Explanation of symbols for main parts of the drawings

1: Engine Cooling Liquid System 2: Filler Port

3: upper tank 4: radiator core

5: lower tank 6: radiator

7: water jacket 8: discharge line

9: inflow line 10: communication path

11: communication path 12: heater core

13: thermal start valve 14: oil pan

15: cylinder head cover 16: pressure action port

17: liquid outlet 18: tank

19: rubber stopper 20: hose

21: pressure means 22: coke

23 negative pressure meter 24 knob

25 cover member 26 pressure meter

27: pressure valve 28: wheel

29: Balance 30: Stand

31: support ring 32: mounting plate

33: handle member 34: air compressor

35: baffle pin 36: air ejector

37: nozzle 38: injection hole

39: inlet pipe 40: secondary flow forming tube

41: mixed flow outlet 42: discharge pipe

43: support member 44: on-off valve

45 connector 46 hose

47: thermal start valve 48: closing member

50: 3-way valve 51: recovery tank

52: recovery hose 53: tank

54 tank 55 negative pressure port

56: liquid inlet 57: positive pressure action port

58: liquid outlet 59: three-way valve

60: three-way valve 61: communication path

62: on-off valve 63: water tube

64: direct member 65: colgate pin

66: upper plate 67: connecting member

68: opening 69: connecting member

70: radiator side bracket 71: lower plate

72: flexible suction member 73: suction hole

74: tubing 75: water tank hose

76: reservation tank 77: tube

78: Reservoir Tank Cap 79: Top Opening

The present invention is an apparatus for exchanging engine coolant, such as LLC (long life current) in an engine coolant system including a radiator, and a coolant storage means having a pressure action port and a liquid inlet and a detachable means detachable from a filter port of a radiator. The communication means for communicating the liquid inlet and the detachable means, and when the coolant in the engine coolant system is extracted, it acts negative pressure on the pressure action port to drive the engine to superheat the coolant at low temperature, and the positive pressure on the pressure action port when supplying new coolant. An engine coolant exchange apparatus is provided so that a coolant can be quickly exchanged in a short time without any need for manipulating a radiator drain cock and jacking up a vehicle.

Generally, when replacing the engine coolant, it is necessary to open the radiator drain coke and extract the coolant.However, since the radiator drain coke is located in the lower part of the engine room, the operation of the drain coke is very poor and the trouble of raising the vehicle to jacky, etc. There is a problem that requires one operation.

Moreover, as a conventional structure of the above-mentioned coolant exchanger, there exists the apparatus of Unexamined-Japanese-Patent No. 4-66323, for example.

That is, in order to install a tank body for receiving a predetermined volume of liquid, the injection hole at the upper end of the tank body, a closing valve at the bottom, and a fitting cap detachably attached to the filler port at the upper side of the radiator upper tank at the bottom, respectively. The radiator cleaning tank is provided with an air vent pipe having a lower end at an opening near the on / off valve and an upper end at an upper portion of the tank body.

In this radiator cleaning tank, after opening the drain cock of the drain port located in the lower tank lower part or lower tank side part of a radiator, draining coolant in a radiator, the drain cock is closed, and then the filler port filler installed in the radiator upper tank The one-touch operation is performed by removing the cap and inserting the fitting cap at the bottom of the tank body to the filler port from which the filler cap has been removed.Then, the coolant is discharged from the inlet having a relatively large opening area at the top of the tank body after opening the aforementioned valve. When injected, the coolant in the tank body naturally flows down. At this time, the air in the radiator is discharged from the upper opening of the tank body to the atmosphere through the air vent pipe described above, so that the coolant in the tank can be smoothly injected into the radiator while performing good de-airing. Can and la And the user can easily exchange the cleaning and the cooling liquid of the radiator, there is such a cooling fluid replacement following problems on the other hand with a solution that could seek to inject significant improvement of the effect can be improved with the resistance.

That is, since the conventional apparatus is related to the natural load, it requires a long time of about 10 to 20 minutes for the coolant exchange and thus has a problem in that the coolant exchange efficiency is poor. In addition, there is a problem as described above because opening and closing of the radiator drain cock.

The main object of the present invention is that there is no need to operate the radiator drain cock at all, nor to raise the vehicle to Jackie, and to make the engine cooling system negative pressure to overheat the coolant as low temperature by driving the engine so as to artificially overheat. It is possible to extract the coolant and air bubbles in a very short time by securing the condition, and to supply the new coolant rapidly in a short time due to the pressure difference by supplying a new coolant pressurized with a constant pressure in the engine cooling system that maintains the inside at a negative pressure. An engine coolant exchange device is provided.

Still another object of the present invention is to provide a single cooling storage means and extract the coolant by providing a special passage switching means in the middle part of the communication means communicating with the liquid outlet port of the cooling storage means and the detachable means detachable to the filler port of the radiator. SUMMARY OF THE INVENTION An object of the present invention is to provide a coolant exchange device for an engine capable of smoothly supplying the coolant and recovering the discharged water to the recovery means of the extracted coolant and simplifying the apparatus.

Another object of the present invention is to eliminate the need for the operation of the radiator drain cock and the jackie lift operation of the vehicle at all, while making the inside of the engine coolant system under negative pressure to heat the coolant as a low temperature by driving the engine to secure a so-called artificial overheat state. In addition to extracting the coolant and air bubbles in the discharge liquid storage means in a very short time, the new coolant is supplied by the new coolant storage means by supplying a new coolant pressurized by a constant pressure in the engine coolant system maintained inside at a negative pressure. It is an object of the present invention to provide a coolant exchange device capable of supplying a fuel in a very short time.

It is still another object of the present invention to construct a pressure acting means such as an air compressor such as an air compressor and a pressure switching means such as a special air ejector, so that the pressure acting means as the pressure generating source of the positive pressure and the negative pressure is used using a single air compression means. The present invention provides an engine coolant exchange device capable of simplifying the apparatus by avoiding a combination of vacuum suction means such as a vacuum pump and air compression means.

Another object of the present invention is to provide an engine coolant exchange device capable of improving the negative pressure suction effect of the coolant by providing a member for directly sucking the coolant from the top opening of the water tube opened into the radiator upper tank.

It is yet another object of the present invention to provide an engine coolant exchange device capable of preventing the coolant from remaining between them by providing a member for sucking the coolant between the top of the water tube and the top plate which slightly protrudes into the radiator upper tank. Is to provide.

Another object of the present invention will be readily understood in response to the description of the embodiments to be described below, one embodiment of the present invention will be described in detail with reference to the drawings.

The drawing shows an engine coolant exchange device. First, referring to FIG. 1, the configuration of the engine coolant system 1 will be described. The upper tank 3 and the radiator core 4 having the filler port 2 at the upper end thereof will be described. And a radiator 6 provided as a heat dissipation means having a lower tank 5, and a discharge line such as a discharge hose or the like between the lower tank 5 of the radiator 6 and various water jackets 7 on the engine side ( 8) and a communication path between the above water jacket 7 and the upper tank 3 of the radiator 6 through an inlet line 9 such as an inlet hose and a communication path to the water jacket 7. The above-mentioned engine cooling liquid system 1 is comprised by connecting and connecting the air-conditioning heater core 12 between (10) and (11).

In the engine coolant outlet control type engine, a thermal start valve 13 is disposed in the inflow line 9. In FIG. 1, 14 represents an oil pan and 15 represents a cylinder head cover.

The water jacket 7 described above is originally formed complicatedly with respect to the cylinder block and the cylinder head, but is simplified and shown in FIG.

The engine coolant exchange device for exchanging the coolant (coolant, LCC, etc.) of the engine coolant system 1 described above is configured as shown in FIGS. 1 and 2.

That is, this engine coolant exchange device has a transparent or semi-transparent tank 18 as a coolant storage means having a pressure action port 16 at the upper portion and a liquid inlet 17 at the lower portion, and the radiator 6 described above. After removing the filter cap of the filler port 2, a rubber stopper having a passage therein and having a tapered cone shape having a passage therein as a detachable means detachable to the filler port 2 in a gastight state and a liquid tight state, and the tank ( 18, a hose 20 having flexibility as a communication means for communicating the liquid outlet opening 17 with the rubber stopper 19 and the coolant in the engine coolant system 1 as described above is driven to drive the coolant. It is provided with a pressurizing means 21 which applies a negative pressure to the above-mentioned pressurizing port 16 to superheat at low temperature, and applies a positive pressure (including atmospheric pressure) to the above-mentioned pressurizing port 16 at the time of supplying a new coolant. have.

Here, the cock 22 serving as the opening and closing means for maintaining the negative pressure is disposed in the vicinity of the rubber stopper 19 described above, and the leak detection ferrule of the engine cooling system 1 is disposed between the cock 22 and the rubber stopper 19. A negative pressure meter 23 as a detection means is attached.

In addition, the upper opening of the tank 18 described above is closed as a cover member 25 having a handle 24 in a hermetic state and detachably closed, and the upper portion of the tank 18 has a positive pressure for detecting the internal pressure of the tank, A pressure meter 26 for both negative pressure and a pressure valve 27 as safety means for closing the valve when the internal pressure of the tank becomes equal to or higher than a predetermined high pressure are attached.

And the tank 18 mentioned above is mounted in the trolley | bogie 29 for which the wheel 28 was provided in at least one, as shown in FIG. The trolley 29 stands a stand 30 and a support ring 31 for supporting a lower portion of the tank 18 is installed at the bottom of the stand 30, and an air ejector 36 will be described later on the top. ), And a handle member 33 serving as a support for the hose 20 is provided.

Next, with reference to FIG. 1, FIG. 3, and FIG. 4, the specific structure of the pressure action means 21 is demonstrated.

The pressure action means 21 uses the air compressor 34 as the air compression means and the drive flow from the air pressure compressor 34 as the primary flow a. b) Air as a pressure switching means which acts negative pressure as b) and exerts a positive pressure c on the pressure action port 16 when resistance is added to the baffle pin 35 as a resistance addition element to the jet of the above-mentioned driving flow. The ejector 36 is provided.

The air ejector 36 includes a water pipe 42 having an inlet pipe 39 having a jet hole 38 at the tip of the nozzle 37, a secondary flow forming tube 40, and a mixed flow outlet 41. And forming a supporting member 43 of the baffle pin 35 at a portion facing the mixed flow outlet 41, and the above-mentioned secondary flow forming tube 40 is provided with a pressure action port in the tank 18 ( 16), the compressed air discharge portion of the air compressor 34 with the inlet pipe 39 and the drive flow inlet 39a interposed between the on-off valve 44, the connector 45, and the flexible hose 46. In communication with

A pressure control valve (not shown) may be provided between the on-off valve 44 and the drive flow inlet 39a to adjust the pressure of the drive flow.

When the air ejector 36 described above does not insert the baffle pin 35 into the support member 43 as shown in FIG. 3, that is, when the mixed flow outlet 41 is formed as an air opening. The high-speed flow from the air compressor 34 of the air is blown off at the injection port 38 as the primary flow a, and the secondary flow b is sucked into the mixing chamber, so that a negative pressure acts on the pressure action port 16 described above. As shown in FIG. 4, when the mixed flow outlet portion 41 is partially closed by inserting the baffle pin 35 into the support member 43, a part of the jet stream ejected from the injection hole 38 is baffle pin 35. By the resistance of the back flow from the secondary flow forming tube 40 to the pressure action port 16, the positive pressure (c) acts on the pressure action port (16).

When the mixed flow outlet part 41 is completely closed, the positive pressure c flowing back to the pressure action port 16 becomes too strong, so that a part d is opened to the atmosphere.

The illustrated embodiment is configured as described above and will be described below.

In the case of exerting a coolant such as LLC in the engine coolant system 1, the rubber stopper 19 described above is first attached to the filler port 2 of the radiator 6 as shown in FIG. The air ejector 36 is set to the state shown in FIG. 3 by opening the opening and closing valve 44 and the opening and closing valve 44, and the negative pressure is applied to the pressure action port 16 of the tank 18 by driving the air compressor 34. Start the engine together with the system. When the thermal start valve 13 of the outlet control type is provided, the thermal start valve 13 is processed at a temperature (82 to 88 ^° C.) at which the thermal start valve 13 is opened. That is, it processes in the state which the summer start valve 13 closed.

In this way, if a negative pressure (for example, a pressure reduction of 500 mmHg or more) is applied to the engine cooling liquid system 1 through each of the elements 16, 18, 17, 20, 22, and 19 while the engine is driven, the boiling point of the cooling liquid is lowered. The coolant in the engine coolant system 1 is boiled in a so-called artificial overheat state that is overheated at low temperature by engine heat, and the coolant is pressurized by the generated bubbles, so the engine coolant system is operated by the negative pressure acting on the tank 18. There is an effect that almost the entire amount of coolant and bubbles in 1) can be extracted into the tank 18 in a short time through the elements 19, 22, 20, and 17 in that order.

In addition, since the tank 18 is composed of a transparent or semi-transparent body, the pollution degree of the discharge liquid B can be confirmed at a glance.

At the time point of extracting the coolant discharge liquid B into the tank 18, the above-described cock 22 is closed to maintain the inside of the engine coolant system 1 at a negative pressure.

At this time, if the engine cooling liquid system 1 has a depleted portion (a so-called leaked portion), air flows in from this portion, so that the negative pressure meter 23 can detect this.

Next, when supplying a new coolant such as LLC into the engine coolant system 1, first, the discharge liquid B in the tank 18 shown in FIG. 5 is discharged to a recovery means such as a discharge liquid recovery tank, and the tank ( 18), fresh coolant A is stored as shown in FIG.

Next, the air ejector 36 is set to the state shown in FIG. 4 to open the coke 22 and the opening / closing valve 44, and the air compressor 34 is driven to the pressure action port 16 of the tank 18. The new coolant (A), which is joined to the positive pressure in the engine coolant system (1) in which the inside is maintained at a negative pressure while acting as a positive pressure, is supplied through each element 17, 20, 22, and 19 sequentially. ) Can be supplied quickly in a very short time.

In addition, since there is no need to operate the radiator drain coke in the same manner as before, and there is no need to raise the vehicle again, there is an effect that the engine coolant exchange workability can be drastically improved.

Then, the pressure action means includes air compression means (see air compressor 34), pressure switching means (see air ejector 36), and an element (baffle pin 35) for adding resistance to the drive flow ejection part of the pressure switching means. When the above-described drive flow ejection part is opened, the secondary flow (b), that is, negative pressure, is applied to the above-mentioned pressure action port 16 with the high-speed drive flow from the air compression means as the primary flow (a). When a resistance is added to the drive flow jet of the pressure switching means, the primary flow a passing through the drive flow jet flows back to the pressure acting port 16 to apply a positive pressure to the pressure acting port 16. You can.

As a result, since the air compressor 34 can be constituted by using any single air compression means, the pressure acting means as the pressure generating source of the positive pressure and the negative pressure is used together with the vacuum suction means (vacuum pump) and the air compression means. There is an effect that can be avoided to simplify the device.

On the other hand, in the engine coolant system 1 having the inlet control type thermal start valve 47 in the discharge line 8 as shown in FIG. 7, the inlet line 9 at the time of extracting the discharge liquid B is shown. ) Is closed by a closing member 48 such as a band or a clip to block the flow of the cooling liquid, and the negative pressure suction of the cooling liquid is performed under the temperature (82-88 ° C) condition at which the thermal start valve 47 is opened. .

In this configuration, other points have almost the same effect and effect as in the previous embodiment. Therefore, the same parts as in the previous drawings in FIG. 7 are denoted by the same reference numerals, and detailed description thereof will be omitted.

8 to 10 show a second embodiment of the engine coolant exchange device, wherein the hose 20 having flexibility as a communication means for communicating the liquid inlet 17 of the tank 18 with the rubber stopper 19. A three-way valve 500 is provided as a passage switching means in the middle of the coolant, and when the coolant is extracted and the new coolant is supplied, the liquid outlet 17 and the rubber stopper 19 are communicated with each other. When recovering to the collection tank 51 as a structure, it is comprised so that the above-mentioned liquid outlet opening 17 and the recovery hose 52 as a collection path may be made to communicate.

In such a configuration, when the rubber stopper 19 and the liquid inlet port 17 communicate with each other by the three-way valve 50 as the passage switching means described above, the negative pressure is maintained by the pressure action port 16. The discharge liquid B can be extracted into the tank 18 through the elements 19, 22, 20, 50, 17, and the liquid inlet 17 as shown in FIG. 9 to the three-way valve 50 described above. And the recovery hose 52 serving as the recovery passage, the discharge liquid B once extracted to the tank 18 described above is recovered through each of the elements 17, 50, and 52 by the positive pressure applied to the pressure action port 16. The discharge can be recovered to (51).

Then, after the fresh coolant A is stored in the tank 18 of the aforementioned tank 18 from the liquid inlet 17 side or the cover member 25 which has been opened, it is shown in FIG. As shown, the liquid outlet port 17 and the rubber stopper 19 communicate with each other through the elements 17, 50, 20, 22, and 19 into the engine coolant system 1 by the positive pressure and the pressing force toward the pressure action port 16. New coolant (A) can be supplied quickly.

In this manner, the single tank 18 and the single three-way valve 50 can extract the discharge liquid B, supply the fresh cooling liquid A, and recover the discharge liquid B to the recovery tank 51. It can be performed smoothly, there is an effect that can simplify the device.

In particular, in the case of using LLC as the cooling liquid, Pb (lead) and ethylene glycol are contained in the discharge liquid (B). Therefore, this Pb and ethylene glycol can be reliably recovered to protect the environment.

In addition, in the second embodiment, other points are almost the same in operation and effect as in the first embodiment. Therefore, the same parts as in the previous drawings in FIGS. Description is omitted.

11 and 12 show the third embodiment of the engine coolant exchanger. In each of the above-mentioned embodiments, the single tank 18 and the discharge liquid B and the storage of the new coolant A are used. In the third embodiment, they are provided in separate tanks 53 and 54, respectively.

That is, the discharge liquid tank 53 as discharge liquid storage means having a negative pressure action port 55 at the upper portion and a liquid inlet 56 at the lower portion, and a positive pressure action port 57 at the upper portion and a liquid discharge port 58 at the lower portion thereof. Each of the new coolant tanks 54 serving as the new coolant storage means is provided separately, and the negative pressure acts on the negative pressure action port 55 when the discharge liquid B is extracted by the pressure action means 21 described above. In addition, when supplying a new coolant (A), the secondary flow-forming tube 40, the negative pressure action port 55, and the positive action action pressure port 57 of the air injector 36 so that the positive pressure acts on the positive action action port 57. A three-way valve 59 is provided as a three-way air passage switching means.

In addition, the liquid passage which communicates the above-mentioned rubber stopper 19 and the liquid inlet 56 at the time of extracting a coolant, and communicates the above-mentioned liquid outlet 58 and the rubber stopper 19 when supplying a new coolant A is carried out. A three-way valve 60 as a switching means is provided. In FIG. 11 and FIG. 12, the same code | symbol is attached | subjected to the same part as the previous figure.

The operation of the third embodiment thus constructed will be described below with reference to FIGS. 11 and 12.

When extracting a coolant such as LLC in the engine coolant system 1, first, as shown in FIG. 11, the above-mentioned rubber stopper 19 is attached to the filler port 2 of the radiator 6 in an airtight state so that the coke ( 22) and the opening / closing valve 44 is opened and the air ejector 36 is set to the state of FIG. 3, and the secondary flow forming tube of the air ejector 36 is connected to the three-way valve 59 on the air side ( 40 and the negative pressure action port 55 communicate with each other, and the rubber stopper 19 and the liquid inlet 56 of the discharge liquid tank 53 are communicated with the three valves 60 on the cooling liquid side, and the air compressor 34 The engine is driven under the state in which the negative pressure is applied to the negative pressure action port 55 of the discharge liquid tank 53 by driving the engine.

When the negative pressure is applied to the engine coolant system 1 through the elements 55, 53, 56, 60, 20, 22, and 19 while the engine is driven in this way, the boiling point of the coolant is lowered. The coolant is boiled up at low temperature due to engine heat, so that it is boiled up and the coolant is pressurized by the generated bubbles, so that almost all of the coolant in the engine coolant system 1 is affected by the negative pressure acting on the discharge tank 53. Cooling liquid and bubbles can be extracted into the discharge liquid tank 33 in a short time through each of the elements 19, 22, 20, 60, 56 in sequence.

Next, when supplying the new coolant A in the new coolant tank 54 into the engine coolant system 1, the air ejector 36 is set to the state shown in FIG. 4, and the three-way valve 59 on the air side is set. The secondary flow-forming tube 40 of the air injector 36 and the positive pressure action port 57 are communicated with each other, and the liquid outlet 58 and the rubber stopper are communicated with the three-way valve 60 on the coolant side. When the positive pressure is applied to the positive action port 57 of the new coolant tank 54 by driving the air compressor 34, the new coolant A pressurized to a positive pressure in the engine coolant system 1, the inside of which is maintained at a negative pressure, is Since the elements 58, 60, 20, 22, 19 are sequentially supplied, there is an effect that the new coolant A can be supplied quickly in a very short time due to the pressure difference.

In addition, since there is no need to operate the radiator drain cock at all, and the vehicle does not need to be lifted up again, there is an effect that the engine coolant exchange workability can be drastically improved.

In addition, since the cooling liquid storage tank is separated into the one for the discharge liquid B and the one for the new cooling liquid A, the engine coolant exchange operation can be performed in a shorter time.

In other respects, the third embodiment now shows almost the same operation and effect as in the previous embodiments, and the same reference numerals are given to the same parts as in the previous drawings in FIGS. 11 and 12, and the detailed description thereof. Is omitted.

13 and 14 show a fourth embodiment of the engine coolant exchange device. In the third embodiment, the pressure meter 26 and the pressure are applied to both the discharge tank 53 and the new coolant tank 54. Although the valves 27 were provided respectively, in this fourth embodiment, the pressure meter 26 and the pressure valve 27 are attached only to the discharge liquid tank 53 side.

That is, the secondary flow-forming pipe 40 of the air ejector 36 and the negative pressure action port 55 communicate with each other, while the communication path 61 communicates the connection paths between both of these 40 and 55 and the positive pressure action port 57. An on-off valve 62 is provided.

At the time of extracting the discharge liquid B, as shown in FIG. 13, the above-described shut-off valve 62 is turned off, that is, closed and the negative pressure is applied to the negative pressure action port 55 to cool the liquid in the engine coolant system 1. As indicated by the arrows, the above-described shut-off valve 62 is turned off, that is, closed and the negative pressure is applied to the negative pressure acting port 55 to discharge the liquid tank as shown by the arrow indicating the coolant in the engine coolant system 1 with an arrow. At 53, when supplying the new coolant A, as shown in FIG. 14, the above-described open / close valve 62 is turned ON, that is, the positive pressure is applied to the positive pressure action port 57, and the new coolant tank is supplied. A new coolant (A) is supplied to (54) using the pressure difference in the engine coolant system (1).

At this time, the static pressure also acts in the discharge liquid tank 53, but since the liquid discharge port 56 side is closed by the three-way valve 60, the discharge liquid B in the discharge liquid tank 53 is the engine cooling liquid system ( 1) No spillage inside.

Moreover, the pressure acting on both tanks 53 and 54 can be detected by a single pressure meter 26, and when the internal pressure of the tanks 53 and 54 becomes more than a predetermined high pressure, a single pressure valve ( There is an effect that the 27 can be opened to protect both tanks 53 and 54.

In other respects, the same effects as in the previous embodiment are exhibited, and therefore, the same parts as in the previous drawings in FIGS. 13 and 14 are denoted by the same reference numerals, and detailed description thereof will be omitted.

15 and 16 show a direct suction member 64 which sucks the coolant directly from the top opening of the water tube 63 opened into the upper tank 3 of the radiator 6 when the coolant is extracted.

The above-mentioned radiator core 4 is composed of a corrugated fin 65 and a water tube 63 and protrudes slightly above the upper plate 66 of the upper end of the water tube 63 described above. The 64 is communicated with the hose 20 or the rubber stopper 19 described above to directly suck the coolant from the upper end opening of the water tube 63.

In this embodiment, the direct suction member 64 described above has a connecting member 69 having a hose 66 ', a connecting member 67, and a rubber or sponge opening 68 as shown in FIG. And a direct suction of the coolant from the opening 68 of the connecting member 69 connected to the upper end opening of the water tube 63 at the time of negative pressure suction. With respect to the structure to be sucked, there is an effect that can improve the extraction effect by the negative pressure of the cooling liquid.

In addition, although the rubber stopper 19 and the direct suction member 64 were used in FIG. 15, this rubber stopper 19 can be omitted. In FIG. 15 and FIG. 16, 70 is a radiator side bracket and 71 is a lower board.

FIG. 17 shows a flexible suction member 72 for sucking the coolant between the water tube 63 and the upper plate 66 protruding into the upper tank 3 of the radiator 6 when the coolant is extracted. A plurality of flexible suction members 72 formed of a flexible member such as the above are connected to the rubber stopper 19 described above, and a plurality of suction holes 73 are drilled through the suction members 72.

The above-mentioned flexible suction member 72 is inserted from the filler port 2 into the upper tank 3, and the flexible suction member 72 is laid on the upper plate 66, and the filler port is made of a rubber stopper 19. By closing (2) in the airtight state and applying a negative pressure suction force, the coolant can be sucked from between the water tube 63 and the upper plate 66, so that the top opening of the water tube 63 There is an effect that the cooling liquid can be reliably prevented from remaining between the upper surface of the upper plate 66).

FIG. 18 shows suction means for directly sucking the coolant from the lower tank 5 of the radiator 6, and connects a tubing 74 having a relatively small diameter to the rubber stopper 19 described above. Positioning 74 in the lower tank 5 through the water tube 63 allows the cooling liquid to be sucked directly from the lower tank 5 at the time of negative pressure suction.

19 shows suction means for sucking the coolant in the reservoir tank 76 connected via the water supply tank hose 75 from directly below the filler port 2 of the radiator 6, and the rubber stopper 19 described above. Tube (78) in communication with the tubular tank (77) and the reservoir tank cap (78) removed, and then the tubing (77) described above is inserted into the reservoir tank (76) from its upper opening (79). The cooling liquid in 76 can be sucked under negative pressure.

In correspondence between the configuration of the invention of this embodiment and the above-described embodiment, the coolant storage means of the invention of this embodiment corresponds to the tank 18 of the above-described embodiment, and the detachment means hereafter corresponds to the rubber stopper 19, The communicating means corresponds to the hose 20, the pressure acting means corresponds to three characters of the air compressor 34, the air ejector 36 and the baffle pin 35, and the recovering means corresponds to the recovering tank 51. The passage corresponds to the recovery hose 52, the passage switching means corresponds to the three-way valve 50, the discharge liquid storage means corresponds to the discharge liquid tank 53, and the new coolant storage means is the new coolant tank 54. The passage switching means corresponds to the three-way valve 60, the air compression means corresponds to the air compressor 34, the pressure switching means corresponds to the air ejector 36, and The resistive adding element corresponds to the baffle pin 35 but the invention of this embodiment is described above. Configurable only it is not limited.

Claims (6)

Coolant storage means having a pressure action port and a coolant outlet and a detachable means detachable from the radiator filler port, a communication means communicating with the coolant outlet of the coolant storage means and the detachable means, and the engine when extracting the coolant in the engine coolant system. And an actuating means for actuating a negative pressure to said pressure acting port to drive the pump to superheat the coolant at low temperature, and to apply a positive pressure to said actuating port when supplying a new coolant. A passage switching means for communicating the coolant inlet and the recovery passage with the coolant inlet and the detachable means communicating with the coolant inlet and the detachable means during the extraction of the coolant and supplying the new coolant to the middle portion of the communicating means; An engine coolant exchange device according to claim 1 which is installed. The engine is driven when the discharge liquid storage means having the negative pressure port and the liquid inlet, the new coolant storage means having the positive pressure port and the liquid outlet, the detachable means detachable from the filler port of the radiator and the coolant in the engine coolant system are extracted. While acting as a negative pressure on the negative pressure action port to superheat the cooling liquid at low temperature, and communicating the pressure action means for applying a positive pressure to the positive pressure action port when supplying a new coolant and the detachable means and the liquid inlet when extracting the coolant. And a passage switching means for communicating the liquid outlet port and the detachable means when supplying a new coolant. The pressure action means acts as a secondary pressure to the pressure action port as an air compression means and a drive flow from the air compression means as a first flow and the pressure action when a resistance is added to the ejection of the drive flow. The engine coolant exchange apparatus according to claim 1 having a pressure switching means for applying a static pressure to a port. Claim 1 of the patent claim in which a direct suction member is installed to suck the coolant directly from the upper end of the water tube opened into the upper radiator when the coolant is extracted, and the direct suction member is connected to the communicating means or the detachable means. Engine coolant exchanger of the base material. The scope of the claims of claim 1, wherein a plurality of flexible suction members are provided to suck the coolant between the water tube and the upper plate protruding into the radiator upper tank when the coolant is extracted, and the flexible suction member is connected to the detachable means. Engine coolant exchange system.