JPS6266220U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 is an overall configuration diagram of one embodiment of the present invention, Figure 2
The figure is a block diagram of the shutter device, and FIG. 3 is a diagram showing the operating characteristics of the shutter device. 2...Water jacket, 3...Capacitor, 4
...Cooling fan, 5...Steam passage, 8...Refrigerant passage, 1
2... Check valve, 13... Auxiliary tank, 14... First passage, 15... Second passage, 17... Release valve, 18... Negative pressure responsive valve, 20... Pressure switch, 22... Relay,
26...Relief switch, 30...Shutter device,
31... Shutter body, 32... Air cylinder, 33
...Air reservoir tank, 34...Air passage, 35...
Solenoid switching valve.

Amendment December 19, 1980 The scope of claims for utility model registration is amended as follows.

[Scope of Claim for Utility Model Registration] An engine water jacket that is mostly filled with liquid-phase refrigerant and a condenser that maintains the interior in a vapor phase are connected through a vapor passage through which refrigerant vapor flows and a refrigerant passage where liquefied refrigerant is returned. In a boiling cooling system for an internal combustion engine, which forms a closed circuit in which a refrigerant circulates, an electric cooling fan supplies forced cooling air to the condenser , and a temperature or pressure in the steam passage is detected to determine the pressure or temperature. A cooling fan drive circuit that drives the cooling fan when the temperature exceeds a certain value, and a shutter device that reduces the amount of cooling air to the condenser under normal conditions, and the shutter device cooperates with the cooling fan drive circuit to cool the condenser. A boiling cooling device for an internal combustion engine, characterized in that the cooling air volume is gradually increased as the fan starts operating.

Claims (1)

[Scope of utility model registration request] A closed circuit in which the engine water jacket, which is mostly filled with liquid-phase refrigerant, and the condenser, which maintains the interior in the vapor phase, are connected through a vapor passage through which refrigerant vapor flows and a refrigerant passage where liquefied refrigerant is returned, and the refrigerant circulates. In the boiling cooling device for an internal combustion engine, the condenser is disposed above the water jacket, a check valve is interposed in the middle of the refrigerant passage, and an auxiliary tank storing a predetermined liquid phase refrigerant is provided. a first passage that opens into the liquid in the auxiliary tank and connects to the lower part of the condenser, and a second passage that opens in a predetermined position of the auxiliary tank and connects to the steam passage; A negative pressure response valve that opens in response to negative pressure is installed in each of the steam passages, and an electric cooling fan that supplies forced cooling air to the condenser is installed, and a temperature or pressure in the steam passage is detected to adjust the pressure or temperature. A cooling fan drive circuit that drives the cooling fan when the amount exceeds a predetermined value, and a shutter device that reduces the amount of cooling air to the condenser under normal conditions, and the shutter device cooperates with the cooling fan drive circuit. 1. A boiling cooling device for an internal combustion engine, characterized in that the cooling air volume is gradually increased when a cooling fan starts operating.