JP5774329B2 - Hose attachment - Google Patents

Description

  The present invention relates to a hose for interposing a vehicular coolant processing apparatus for recovering a coolant from a vehicular engine cooling system and supplying the regenerated cooling liquid or new liquid to the vehicular engine cooling system in the vehicular engine cooling system. It is about attachment.

  In recent years, an increasing number of vehicles employ completely sealed cooling systems. The complete hermetic cooling system is a structure in which the reserve tank is provided with a radiator cap, the atmosphere is shut off as a structure that also applies pressure to the reserve tank, and the cooling water channel is completely sealed. The reserve tank is used as part of the cooling water channel By constantly circulating all the cooling water, it is possible to eliminate contact with the outside air, thereby preventing the cooling water from being reduced due to evaporation and deterioration due to atmospheric contact.

  Patent document 1 is proposed as an apparatus which collect | recovers a cooling fluid from such a complete hermetic cooling system. Patent Document 1 uses a replacement jig having a double cylinder structure in which an old liquid suction pipe is provided inside a new liquid injection pipe, and the tip of the old liquid suction pipe protrudes from the tip of the new liquid injection pipe. It replaces the radiator cap of the reserve tank and is connected by a connecting cap to inject new liquid and extract old liquid.

  By the way, the reserve tank used for the complete hermetic cooling system has its inside divided vertically and horizontally by a plurality of partition walls in order to ensure pressure resistance and improve gas-liquid separation performance. In addition, this reserve tank is often placed in a limited installation space in the engine room in consideration of the coolant flow from the radiator and interference with other parts, avoiding other parts at the bottom of the tank. In some cases, a shape portion is formed. For this reason, if the radiator cap position of the reserve tank and the deepest part of the tank bottom are displaced in the longitudinal direction, with the conventional replacement jig, the tip of the old liquid suction pipe does not reach the tank bottom, and residual liquid is generated. There was a problem of remaining.

Japanese Patent No. 4490185

  Accordingly, the present invention provides a reserve tank in which the radiator cap position of the reserve tank and the deepest part of the tank bottom are shifted in the longitudinal direction when the coolant is collected by connecting to the reserve tank of the completely enclosed cooling system. The present invention provides a hose attachment that can reliably collect coolant even in a tank.

In order to solve such a problem, the present invention provides a vehicle coolant processing apparatus that recovers coolant from a vehicle engine cooling system and supplies the regenerated coolant or new liquid to the vehicle engine cooling system. A hose attachment interposed between an upper hose and an inlet of a closed type reserve tank of an engine cooling system , wherein an old liquid recovery pipeline of the vehicle coolant processing apparatus is connected to one end and a vehicle a recovery connection conduit upper hose Ru is connected in sealed reserve tank of the engine cooling system, fresh liquid supply line of the vehicle for cooling fluid processing device at one end is connected, sealing of the engine cooling system for a vehicle on the other end inlet and the supply connection pipe that will be connected in formula reserve tank, the recovery connection conduit between the supply connection pipe to integrally form a circulation pipe which communicates said In the ring line from the new liquid supply connecting line is provided with a check valve for stopping the flow of the old liquid collecting connection conduit.

  According to the hose attachment of the present invention, when the coolant is collected by connecting to the reserve tank of the complete hermetic cooling system, the radiator cap position of the reserve tank and the deepest part of the tank bottom are arranged shifted in the longitudinal direction. The coolant can be reliably recovered from the reserved tank. In addition, a check valve is provided in the circulation line that connects the recovery connection line of the hose attachment and the supply connection line, and the flow from the supply connection line to the recovery connection line is stopped. Air can be prevented from being drawn in, and backflow to the radiator can be prevented during injection.

It is the schematic which shows the coolant processing apparatus for vehicles, and a hose attachment. It is explanatory drawing which shows the state connected to the engine cooling system for vehicles. It is explanatory drawing which shows the circulation state in processing operation. It is explanatory drawing which shows the old liquid extraction state in processing operation. It is explanatory drawing which shows the new liquid injection | pouring state in processing operation. It is explanatory drawing which shows the processing operation using a suction injection | pouring nozzle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a processing apparatus main body, which extends a recovery line 3 for recovering old liquid from the vehicle engine cooling system 2 and a supply line 4 for supplying new liquid to the vehicle engine cooling system 2. . A suction pump 5 and an old liquid storage tank 6 are connected to the recovery pipe 3, and the old liquid recovered from the cooling system 2 is stored in the old liquid storage tank 6. An injection pump 7 and a new liquid tank 8 are connected to the supply line 4, and the new liquid in the new liquid tank 8 is supplied to the cooling system 2.

  A control device 9 controls the suction pump 5 and the infusion pump 7 based on a command from the operation panel 10. The operation panel 10 is provided with keys provided for each processing course, an extraction key that is operated when the old liquid is extracted, an injection key that is operated when a new liquid is injected, and a start key that starts the processing course. A stop key for interrupting course execution is provided.

  A female coupler 11 and a male coupler 12 are provided at the distal ends of the recovery pipe line 3 and the supply pipe line 4, respectively, and either the suction injection nozzle 13 or the hose attachment 14 is selected according to the form of the cooling system 2. Connected.

  The suction injection nozzle 13 is connected to the radiator cap or the reserve tank cap of the cooling system 2 and is connected with a concentric double cylinder structure, and the inner cylinder is used as the old liquid suction pipe 15. An outer cylinder is used as the new liquid injection pipe 16. The suction injection nozzle 13 includes a male coupler 17 connected to the female coupler 11 of the recovery pipe 3 and a female coupler 18 connected to the male coupler 12 of the supply pipe 4. The old liquid suction pipe is connected to the male coupler 17. 15 communicates with the female coupler 18 and the new liquid injection pipe 16 communicates with the female coupler 18. The tip of the old liquid suction pipe 15 has a length protruding from the tip of the new liquid injection pipe 16 so that the old liquid can be sucked from the bottom of the tank when connected to the reserve tank. It has become. A connection cap 19 is provided at the tip of the new liquid injection pipe 16 so that the suction injection nozzle 13 can be screwed and fixed to the opening by replacing it with a radiator cap or a reserve tank cap.

  The hose attachment 14 removes the upper hose from the inlet of the reserve tank, and is interposed between the inlet and the upper hose. The hose attachment 14 connects the recovery line 3 of the apparatus main body 1 and the upper hose of the reserve tank. It comprises a passage 20, a supply connection line 21 that communicates the supply line 4 of the apparatus body 1 and the inlet of the reserve tank, and a circulation line 22 that communicates the recovery connection line 20 and the supply connection line 21. Has been. The recovery connection pipe 20 includes a male coupler 23 connected to the female coupler 11 at the tip of the recovery pipe 3 at one end, and a connection port 24 connected to the upper hose at the other end. The supply connection pipe 21 is provided with a female coupler 25 connected to the male coupler 12 at the tip of the supply pipe 4 at one end and a hose 26 connected to the inlet of the reserve tank at the other end. The circulation line 22 is provided with a check valve 27 for blocking the flow path from the supply connection line 21 to the recovery connection line 20, and the flow flowing from the upper hose of the reserve tank to the inlet of the reserve tank in the hose attachment 14. A path is formed.

Now, a cooling liquid processing method of the hermetic cooling system by the vehicle cooling liquid processing apparatus configured as described above will be described with reference to FIGS.
First, touching on the closed cooling system 2 to be treated, the cooling system 2 includes an engine E, a radiator R, and a reserve tank T, and a water pump P and a thermostat valve V are installed on a pipe connecting the engine E and the radiator R. I have. The radiator R is formed in a cross flow type having a radiator chamber on the left and right sides, the radiator chamber and the engine E are piped, and the upper part of the radiator chamber and the reserve tank T are piped. When the coolant is warmed by starting the engine E, the thermostat valve V is opened, and the coolant is circulated to the engine E and the radiator R, the radiator R and the reserve tank T by the water pump P.

  When exchanging the coolant of the cooling system 2, first, as a preparatory work, the coupler 11 and the coupler 23 are connected to connect the recovery pipe 3 of the processing apparatus 1 and the recovery connection pipe 20 of the hose attachment 14. The coupler 12 and the coupler 25 are connected to connect the supply line 4 of the processing apparatus 1 and the supply connection line 21 of the hose attachment 14. Next, the upper hose U is removed from the inlet I of the reserve tank T, and the upper hose U is connected to the connection port 24 of the recovery connection line 20 of the hose attachment 14 and the hose 26 of the supply connection line 21 of the hose attachment 14. Is connected to the inlet I of the reserve tank to complete the preparation (FIG. 2).

  When the connection work is completed, the vehicle engine E is started to warm up. When the engine E is warmed up and the thermostat valve V is opened, the coolant circulates in the cooling system 2 and a flow path is formed from the radiator R to the reserve tank T through the circulation line 22 of the hose attachment 14 ( FIG. 3).

  In this state, when the suction pump 5 is started and the extraction process is started, the old liquid in the cooling system 2 is drawn from the recovery connection line 20 of the hose attachment 14 to the recovery line 3 of the processing apparatus 1, and the storage tank 6 Stored inside. At this time, the check valve 27 provided in the circulation line 22 of the hose attachment 14 prevents air from being drawn from the inlet I of the reserve tank T (FIG. 4).

  When a predetermined amount of cooling liquid is drawn into the storage tank 6, the suction pump 5 is stopped to end the extraction process, and then the injection pump 7 is activated to start the injection process. When the injection pump 7 is activated, the new liquid in the new liquid tank 8 is injected from the supply line 4 of the processing apparatus 1 into the reserve tank T through the supply connection line 21 of the hose attachment 14. At this time, the backflow to the radiator R is prevented by the check valve 27 provided in the circulation line 22 of the hose attachment 14 (FIG. 5).

  When a prescribed amount of new liquid is supplied into the cooling system 2, the injection pump 7 is stopped and the injection process is completed. After the processing is completed, the upper hose U of the reserve tank is removed from the hose attachment 14, the hose 26 is removed from the inlet I of the reserve tank, the upper hose U of the reserve tank is connected to the inlet I of the reserve tank, and the operation is completed. It becomes.

  In addition, when exchanging the coolant of the hermetic cooling system, an operation can be performed using the suction injection nozzle 13. In this case, the recovery pipe 3 and the supply pipe 4 of the processing apparatus 1 are connected to the suction injection nozzle 13, the radiator cap is removed, the old liquid suction pipe 15 is inserted, and then fixed by the connection cap 19. (FIG. 6).

  After the connection, the suction pump 5 and the injection pump 7 are driven, the old liquid is sucked into the storage tank 6 through the old liquid suction pipe 15, and the new liquid is sent from the new liquid storage tank 11 through the injection pipe 16. When the required amount of new liquid has been injected, the suction pump 5 and the injection pump 7 are stopped, the connection cap 19 is removed, the suction injection nozzle 13 is removed, and the radiator cap is remounted.

  When the suction injection nozzle 13 is used in this way, there is a merit that the work can be performed with a simple connection in which the suction injection nozzle 13 is attached to the radiator cap provided in the reserve tank or the radiator, and there is no exchange failure due to air mixing. However, as shown in FIG. 6, if the shape of the reserve tank has other parts avoiding shape part at the bottom of the tank, the tip of the old liquid suction pipe 15 does not reach the deepest part of the tank. However, there is a problem that the old liquid remains. For this reason, the suction injection nozzle 13 is used in the case of a reserve tank in which the radiator cap position and the tank deepest portion are not displaced, and the hose attachment 14 is used in the case of a reserve tank in which the radiator cap position and the tank deepest portion are displaced. Thus, it becomes a preferable embodiment to selectively connect according to the form of the cooling system. Of course, there is no problem even if the hose attachment 14 is used for the replacement work regardless of the shape of the reserve tank.

  In the said embodiment, although demonstrated as the replacement | exchange apparatus which extracts the old liquid in the cooling system 2 and inject | pours a new liquid, the structure of the processing apparatus 1 does not have limitation in particular. For example, it may be a regenerator that regenerates the recovered old liquid by filtering or adding an additive and returns it to the cooling system.

DESCRIPTION OF SYMBOLS 1 Processing apparatus main body 2 Cooling system 3 Collection | recovery pipeline 4 Supply pipeline 5 Suction pump 6 Old liquid storage tank 7 Injection pump 8 New liquid tank 9 Control device 10 Operation panel 13 Suction injection nozzle 14 Hose attachment 20 Recovery connection pipeline 21 Supply Connection line 22 Circulation line 27 Check valve

Claims (1)

A vehicle coolant processing apparatus that recovers coolant from a vehicle engine cooling system and supplies the regenerated coolant or new liquid to the vehicle engine cooling system is provided with an upper hose of a sealed reserve tank of the vehicle engine cooling system. A hose attachment interposed between the inlet and
It is connected to the old liquid collecting pipe of the vehicle for cooling fluid processing device at one end, and the recovery connection conduit upper hose closed reserve tank of the engine cooling system for a vehicle Ru is connected to the other end, for the vehicle at one end connected new liquid supply pipe of the cooling fluid processing apparatus, a supply connection conduit inlet closed reserve tank of the engine cooling system for a vehicle Ru is connected to the other end, and the recovery connection conduit and the supply connection conduit A hose attachment in which a circulation line that communicates with each other is integrally formed, and a check valve that stops the flow from the new liquid supply connection line to the old liquid collection connection line is provided in the circulation line.

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