JPS6256717U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block diagram of an evaporative cooling device showing an embodiment of this invention, Fig. 2 is a flowchart explaining the operation of the control unit that controls the opening and closing operations of the on-off valve in the same embodiment, and Fig. 3 is a similar control unit. 3 is a graph showing the opening/closing characteristics of the on-off valve controlled by the unit. 1...engine, 2...water jacket, 3...
Condenser, 5... Steam passage, 7... Lower part of condenser, 8... Refrigerant passage, 13... Auxiliary tank, 14... Air discharge passage, 17... Opening/closing valve, 20... Pressure sensor,
21...Temperature sensor, 23...Control unit.

Amendment January 23, 1981 The name of the invention is amended as follows. Title of the invention Boiling cooling device for internal combustion engines The scope of the utility model registration claims and the brief description of the drawings are 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 communicated through a vapor passage through which refrigerant vapor flows and a refrigerant passage where liquefied refrigerant is returned. In an evaporative cooling system for an internal combustion engine that forms a closed circuit in which refrigerant circulates, an auxiliary tank storing a predetermined liquid phase refrigerant is provided, and an air exhaust passage that opens into the liquid in this auxiliary tank is provided below the condenser. and an on-off valve is interposed in the air discharge passage, and a pressure detection means and a temperature detection means are interposed in the steam passage, and when at least one of the detected pressure and the detected temperature reaches a certain value or more, A boiling cooling device for an internal combustion engine, comprising a control means that closes an on-off valve and opens the valve when both detected pressure and detected temperature fall below a certain value.

[Brief Description of the Drawings] Fig. 1 is a block diagram of a boiling cooling device showing an embodiment of this invention, and Fig. 2 is a flowchart explaining the operation of the control unit that controls the opening and closing operations of the on-off valve in the same embodiment. , FIG. 3 is a graph showing the opening/closing characteristics of the opening/closing valve similarly controlled by the control unit. 1...engine, 2...water jacket, 3...
Condenser, 5... Steam passage, 7... Lower part of condenser, 8... Refrigerant passage, 13... Auxiliary tank, 14... Air discharge passage, 17... Opening/closing valve, 20... Pressure sensor,
21...Temperature sensor, 23...Control unit.

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 a boiling cooling system for an internal combustion engine, an auxiliary tank storing a predetermined liquid-phase refrigerant is provided, an air exhaust passage opening into the liquid in the auxiliary tank is connected to the lower part of the condenser, and an air exhaust passage is connected to the condenser. An on-off valve is interposed, and a pressure detection means and a temperature detection means are interposed in the steam passage, and when at least one of the detected pressure and the detected temperature reaches a certain value or more, the on-off valve is opened and the detection is performed. A boiling cooling device for an internal combustion engine, comprising a control means that closes the valve when both pressure and detected temperature fall below this certain value.