KR20110028327A

KR20110028327A - The cooling system for engine of vehicle using evaporating heat of refrigerant

Info

Publication number: KR20110028327A
Application number: KR1020110017480A
Authority: KR
Inventors: 임효진
Original assignee: 임효진
Priority date: 2010-02-27
Filing date: 2011-02-26
Publication date: 2011-03-17

Abstract

PURPOSE: A cooling system for an engine of a vehicle using an evaporating heat of a refrigerant is provided to reduce the consumption of energy for driving a water pump by adapting a natural cooling system. CONSTITUTION: A cooling system for an engine of a vehicle comprises an engine coolant water jacket(10), a condenser(11), a gas line(12), a liquid pipe(13), a gas extrusion part(15), a liquid inlet(16), a liquid outlet(14) and a cooling control valve(17). The engine coolant water jacket is formed in the engine body in order to surround the engine. The engine coolant water jacket has a coolant circulation path for circulating refrigerant. The condenser has the coolant circulation path. A gas line connects the top withdrawal pipe of the engine coolant water jacket and the top withdrawal pipe of the condenser in order to be mutually connected. The liquid pipe connects the lower withdrawal pipe of the engine coolant water jacket and the lower withdrawal pipe of the condenser in order to be mutually connected. The gas extrusion part discharges internal air to the top conduit line one side of the gas line. The liquid inlet injects the liquid coolant into the top conduit line one side of the liquid pipe. The liquid outlet leaks the liquid coolant of the cooling system to the lower conduit line one side of the liquid pipe. The cooling control valve controls the cooling performance. The cooling control valve is installed on the gas line in order to take a thermostat role.

Description

The cooling system for engine of vehicle using evaporating heat of refrigerant

Engine Cooling System

Existing engine cooling systems are air-cooled and water-cooled, but the engine speed increases and the engine heats up a lot, so the air-cooled is rarely used, and water-cooled cooling systems are the mainstream. However, in the case of water-cooled cooling system, there is a burden to continuously circulate the water, and the operation of the water circulation pump requires energy, and it is likely to cause a malfunction due to the characteristics of the rotating machine. Patent 10-0203095 [engine cooling apparatus], application No. 10-2005-0005646 [cooling apparatus of a vehicle engine], and patent 10-0836394 [vehicle cooling apparatus] all have proposed a water cooling cooling system. All of these assume the burden of forced circulation of water by using the sensible heat of the water. However, there is no way to use latent heat, which is refrigerant vaporization heat such as water, antifreeze additive, freon refrigerant, natural refrigerant, and liquefied gas.

In the present invention, the cooling of the engine by changing the forced cooling of the engine to the cooling method by the sensible heat of water from the cooling method by the vaporization heat while the refrigerant is natural circulation. In addition, the company plans to strengthen cooling performance so that it can be applied to large engines such as generators, ships, vans, buses and compressors. In addition, a method of adding a radiator for cooling not only the vaporized refrigerant but also the liquefied refrigerant is introduced. In addition, a method of regenerating the moving energy of the refrigerant vaporized by the waste heat into physical energy or electrical energy is added.

Engine refrigerant jacket, gas piping, condenser, liquid piping, by connecting the engine refrigerant jacket and refrigerant condenser installed in the upper part of the engine refrigerant jacket with the gas piping and the liquid piping, similar to the existing engine water jacket A refrigerant circulation circuit connected to the engine refrigerant jacket is formed again, and a refrigerant that can be vaporized by waste heat flowing from the engine into the engine refrigerant jacket is injected into the engine refrigerant jacket to allow the refrigerant to vaporize with the waste heat generated from the engine. The engine vaporizing jacket is cooled by the heat of vaporization and the vaporized refrigerant rises to the condenser by the vaporized pressure. The refrigerant in the condenser is liquefied again, changing its phase into liquid and discarding the heat and circulating back to the engine refrigerant jacket by gravity. By completing the cycle, the engine is finally cooled by the heat of vaporization of the refrigerant. Using the method.

The engine has been applied to the water-cooled cooling system until now. However, the water cooling method requires a water pump because the water must be continuously circulated, and the water pump has a high probability of failure and is inefficient to utilize by using power. In the present invention, the refrigerant filled in the engine refrigerant jacket 10 by the waste heat to be removed from the engine is evaporated while the cooling method of the natural circulation while cooling the engine refrigerant jacket 10 with the vaporization heat to take the conventional cooling method of water cooling. In comparison, the water pump is not operated, which saves energy in the operation of the water pump and prevents the failure of the cooling system due to the failure of the water pump. In particular, large generators, ships, trucks, buses, etc., because the engine is large in size, it is necessary to enhance cooling performance. (22) was installed and the heat exchanger condenser (41) was used as the condenser (11) to reinforce the role of the condenser (11) and the refrigerant supply pump (31) was installed in the liquid pipe (13) to dramatically improve the cooling performance. Increased.

1 is a basic explanatory diagram of an engine cooling system using refrigerant vaporization heat of the present invention.
2 is a diagram illustrating a case where a plurality of gas outlet tubes are installed.
3 is a diagram illustrating a case where a refrigerant supply pump is added.
4 is a diagram illustrating a case in which a heat exchanger condenser is installed.
5 is a diagram illustrating a case in which a radiator is added.
6 is a diagram illustrating a case where a turbine / turbine chamber is added.
7 is a diagram illustrating a case where a bypass circuit is installed in a refrigerant supply pump.
8 is a diagram illustrating a case in which components are combined.
9 is a diagram illustrating a case where a supplement tank is added.
10 is an explanatory diagram of a conventional vehicle engine cooling system.

1 is a basic explanatory diagram of an engine cooling system using refrigerant vaporization heat of the present invention. Condenser having a refrigerant circulation passage formed on the upper portion of the engine refrigerant jacket 10 having a refrigerant passage through which a refrigerant is circulated to form an engine body to surround the engine as in the existing engine water jacket 100 ( 11) and the upper outlet pipe of the engine refrigerant jacket 10 and the condenser 11 upper outlet pipe are connected to each other through the gas pipe 12, and the lower outlet pipe of the engine refrigerant jacket 10 and the condenser 11 lower part. The outlet pipes are connected to each other through the liquid pipes 13. Gas outlet 12 is provided with a gas outlet (15) with a valve to discharge the internal air on one side of the upper passage and a liquid inlet (16) with a valve to inject liquid refrigerant to one side of the upper passage of the liquid piping (13). The liquid discharge port 14 with a valve is installed on one side of the lower pipe of the liquid pipe 13 to allow the liquid refrigerant inside the cooling system to flow out. Cooling control valve (17) is installed on the gas pipe (12) pipeline to serve to control the cooling performance and the role of the existing water temperature regulator (Thermostat). In addition, the engine refrigerant jacket 10, the gas pipe 12, the condenser 11, the liquid pipe 13, the engine in the space except the condenser 11 in the cooling system refrigerant circulation circuit formed of the engine refrigerant jacket 10 again. The refrigerant jacket 10 fills a refrigerant (not shown) that can be boiled by waste heat received from the engine, heats the refrigerant, and discharges air through the gas outlet 15 so that the condenser 11 in the refrigerant circulation circuit becomes a vacuum. do. The liquid inlet 16 may be injected through the gas outlet 15 without installing the liquid inlet 16 as necessary. The valve installed in the gas outlet 15 or the liquid inlet 16 is installed in a structure that reduces the pressure when the pressure inside the cooling system pipe is more than a predetermined pressure. The refrigerant is also included in the scope of the present invention using one of water, antifreeze additive, freon refrigerant, natural refrigerant, and liquefied gas. The upper outlet pipe of the condenser 11 to which the gas pipe 12 is connected is made high and the lower outlet pipe of the condenser 11 to which the liquid pipe 13 is connected is made low, or the upper outlet pipe of the condenser 11 is made high. It is also included in the scope of the present invention that the condenser 11 is inclined so as to lower the withdrawal pipe so that the liquefied refrigerant circulates well by gravity. It is also within the scope of the present invention to replace the condenser 11 with a pipe so that the gas pipe 12, the condenser 11, and the liquid pipe 13 are configured as continuous pipes. The principle of operation is as follows. When the engine operates to provide waste heat to the engine refrigerant jacket 10, the refrigerant filled in the engine refrigerant jacket 10 is heated. Since the refrigerant does not dissipate heat to the outside until it reaches a boiling point, it is not necessary to use a conventional thermostat (not shown). When the coolant reaches the boiling point, the coolant absorbs heat of vaporization from the engine coolant jacket 10 while vaporizing, thereby cooling. The gas refrigerant vaporized inside the engine refrigerant jacket 10 flows into the condenser 11 through the gas pipe 12 to discard heat, and the refrigerant that is liquefied and turned into liquid is re-engineed through the liquid pipe 13 by gravity. As it flows into the bottom of the jacket 10, one cycle of cooling is completed. As described, since the refrigerant is circulated by the waste heat and gravity of the engine, it is a natural circulation method, and since the vaporization heat of the refrigerant is used, the existing water pump 102 is not necessary, and there is no need to worry about the failure factor caused by the water pump 102. Cooling performance is also very good. In addition, since the refrigerant does not circulate until the boiling point of the refrigerant is reached, there is no need for components such as a temperature controller of the existing water cooling system, so the structure is simple and the control device is simple. It is a very efficient cooling system because the circulation speed of the refrigerant is determined by the excessive heat of the engine.

2 is a diagram illustrating a case where a plurality of gas outlet tubes are installed. In the case of large generators, ships, trucks, buses, compressors, etc., the engine size is large, and thus the cooling performance needs to be enhanced. In Figure 1 is installed by inserting a gas header 21 for collecting the gas refrigerant between the gas pipe 12 and the engine refrigerant jacket 10, the upper part is connected to the gas pipe 12 and the lower part is the engine refrigerant jacket 10 In order to take out the gas refrigerant generated in the engine coolant jacket 10, a plurality of gas outlet pipe 22 is connected to pass through the upper side and the gas header 21 is installed. The principle of operation is as follows. The gas refrigerant vaporized in the engine refrigerant jacket 10 is collected in the gas header 21 through the plurality of gas outlet pipes 22, and the collected gas refrigerant flows into the condenser 11 through the gas pipe 12 and is heated. By throwing away the more powerful cooling action.

3 is a diagram illustrating a case where a refrigerant supply pump is added. FIG. 3 is characterized in that the refrigerant supply pump 31 is installed on the liquid pipe 13 in FIG. As shown in FIG. 7, when the cooling circuit is weakened by adding a bypass circuit 71 provided with a check valve 72 connecting the refrigerant supply pump 31 to the front and rear of the refrigerant supply pump 31 in parallel. When the liquid refrigerant is naturally circulated to 71 and it is necessary to enhance the cooling, the refrigerant supply pump 31 may operate to rapidly inject the liquid refrigerant into the engine refrigerant jacket 10 to enhance the cooling. The refrigerant supply pump 31 does not serve to circulate the liquid refrigerant, but an apparatus for preventing the injection of the liquid refrigerant by the generation of pressure that is caused by the generation of gas refrigerant by heat inside the engine refrigerant jacket 10. to be.

4 is a diagram illustrating a case in which a heat exchanger condenser is installed. A heat exchanger condenser 41 having a separate primary cooling space and a secondary cooling space formed to exchange heat with each other as a condenser 11 is installed. The upper drawing pipe of the upper portion of the heat exchanger condenser 41 and the primary cooling space is a gas pipe (12). ) And the lower outlet pipe is connected to the liquid pipe 13 and the cooling heat source 42 installed separately from the secondary cooling space of the heat exchanger condenser 41 has an upper pipe 43 and a lower pipe lower part. 44 is connected to penetrate and form a closed circuit so that the cooling fluid (not shown) made in the cold heat source 42 can circulate to the secondary cooling space of the heat exchanger condenser 41. The closed circuit connecting the cold heat source 42 and the secondary cooling space of the heat exchanger condenser 41 is one of a freezing circuit, a cold water circuit, and a cold air circuit. The principle of operation is as follows. The refrigerant (not shown) vaporized in the engine refrigerant jacket 10 flows into the primary cooling space of the heat exchanger condenser 41, and the cooling fluid (not shown) cooled in the cold heat source 42 is the heat exchanger condenser 41. When entering the secondary cooling space, the heat exchanger condenser 41 cools and vaporizes the vaporized refrigerant in the primary cooling space to maintain a vacuum state so that the refrigerant continues to evaporate in the engine refrigerant jacket 10, thereby cooling the engine with this heat of vaporization. Let's do it. Lowering the temperature of the cold heat source 42 can be strongly cooled.

5 is a diagram illustrating a case in which a radiator is added. FIG. 5 differs from the installation of the radiator 51 on the liquid pipe 13 pipeline in FIG. 2. Since the coolant in the liquid state flows to the radiator 51, the cooling performance can be further improved by cooling the sensible heat of the liquid coolant once again. As shown in FIG. 10, a cooling fan (not shown) may be added to the radiator 51, and a plurality of radiators 51 may be provided at the front and rear of the engine so that the radiator 51 performs a part as a condenser when the engine is in an inclined state. You can also install dogs.

6 is a diagram illustrating a case where a turbine / turbine chamber is added. FIG. 6 differs from FIG. 2 in that a turbine / turbine chamber 61 is additionally installed between the cooling control valve 17 and the condenser 11 on the gas piping 12 pipeline. By using the kinetic energy of the engine waste heat of the gas refrigerant passing through the gas pipe 12, the turbine of the turbine / turbine chamber 61 is turned to regenerate electrical energy through physical energy or a generator (not shown) connected to the turbine shaft. Can be.

7 is a diagram illustrating a case where a bypass circuit is installed in a refrigerant supply pump. By adding a bypass circuit (71) provided with a check valve (72) connecting the refrigerant supply pump (31) before and after in parallel with the refrigerant supply pump (31), the liquid refrigerant is transferred to the bypass circuit or the refrigerant supply pump (31) by the engine. The refrigerant jacket 10 was to be supplied smoothly. The operating principle is as described in FIG.

8 is a diagram illustrating a case in which components are combined. 1 to 7 may be installed by installing all of the components of the cooling system to configure a comprehensive cooling system.

9 is a diagram illustrating a case where a supplement tank is added. In the present invention, the condenser 11 is vacuumed and the gas refrigerant generated in the engine refrigerant jacket 10 is condensed in the condenser 11 and cooled while changing phase with liquid refrigerant. If the condenser 11 is empty, the pressure inside the cooling system is lowered and is forced from the outside. Therefore, the engine refrigerant jacket 10 is installed on the lower side of the condenser 11 and a refrigerant supplement tank 91 is installed to allow the refrigerant to flow in and out of the condenser 11 space and one side of the condenser 11 (not shown). Alternatively, a refrigerant flow inlet and outlet pipe 92 is installed to penetrate the lower side of the replenishment tank 91 at one side of the liquid pipe 13, and an opening and closing valve 93 is installed on the refrigerant flow inlet and outlet 92 to control the flow of the refrigerant. The principle of operation is as follows. When the engine is running and the engine refrigerant jacket 10 absorbs heat, the refrigerant inside the engine refrigerant jacket 10 expands in volume, and gas is generated to increase the pressure inside the cooling system. It moves to the replenishment tank 91 through 92 and the inside of the condenser 11 becomes an empty space for cooling. On-off valve 93 to adjust the appropriate amount of refrigerant to move to the replenishment tank (91). When the engine stops operating and the engine refrigerant jacket 10 no longer absorbs heat, the refrigerant inside the engine refrigerant jacket 10 decreases in volume and gas generation stops, thereby lowering the pressure in the cooling system. 91) The internal liquid refrigerant moves back to the condenser 11 through the refrigerant inlet and outlet pipe 92 to increase the internal pressure of the cooling system, thereby preventing the cooling system from being forced by the pressure difference between the outside and the inside. On-off valve 93 to adjust the appropriate amount of refrigerant moving to the condenser (11).

10 is an explanatory diagram of a conventional vehicle engine cooling system. The upper part of the engine water jacket 100 withdrawal pipe and the radiator 51 upper withdrawal pipe are connected to each other through the upper pipe 103 and the lower part of the engine water jacket 100 withdrawal pipe and the radiator 51 with the lower withdrawal pipe ( 104 are connected to each other through. The radiator 51 is further provided with a cooling fan 101, and the water pump 102 is installed in the engine water jacket 100. The principle of operation is as follows. When the engine is heated and the temperature of the water filled in the engine water jacket 100 rises, the water pump 102 is operated so that the water passes through the radiator 51 through the upper pipe 103 in the engine water jacket 100 and then the lower pipe. Through the 104 to the engine water jacket 100 to circulate again. The cooling fan 101 installed in the radiator 51 operates to take the heat of the hot water introduced into the radiator 51 to cool it, make it cool water, and send it back to the engine water jacket 100 to cool the engine. However, since the water pump 102 must be operated in this process, power is also required, and when the water pump 102 is broken, the engine may not be able to operate.

10: engine refrigerant jacket 11: condenser
12: gas piping 13: liquid piping
14 liquid outlet 15 gas outlet
16: liquid inlet 17: cooling control valve
21: gas header 22: gas outlet pipe
31: refrigerant supply pump 41: heat exchanger condenser
42: cold heat source 43: upper piping
44: lower piping 51: radiator
61 turbine / turbine room 71 bypass circuit
72: check valve 91: refill tank
92: refrigerant flow in and out piping 93: on-off valve
100: engine water jacket 101: cooling fan
102: water pump 103: upper pipe
104: lower piping

Claims

An engine refrigerant jacket 10 formed on the engine body to surround the engine in the same manner as the existing engine water jacket 100 and having a refrigerant passage through which refrigerant for circulating the engine is circulated; A condenser (11) having a refrigerant circulation passage installed above the engine refrigerant jacket (10); An engine refrigerant jacket (10) and a gas pipe (12) connecting the upper withdrawal pipe and the condenser (11) upper withdrawal pipe to pass through each other; A liquid pipe 13 for connecting the engine coolant jacket 10 to the lower withdrawal pipe and the condenser 11 withdrawal pipe to penetrate each other; A gas outlet 15 having a valve installed to discharge internal air at one side of the upper gas pipe 12; A liquid inlet port 16 having a valve installed to inject liquid refrigerant to one side of the upper side of the liquid pipe 13; A liquid outlet port 14 having a valve installed at one side of the lower portion of the liquid pipe 13 to allow the liquid refrigerant in the cooling system to flow out; A cooling control valve (17) installed on the gas pipe (12) line to serve to adjust the cooling performance and serve as a conventional water temperature regulator (Thermostat); The engine refrigerant jacket 10, the gas pipe 12, the condenser 11, the liquid pipe 13 is filled in the space except the condenser 11 in the cooling system refrigerant circulation circuit formed of the engine refrigerant jacket (10) again Engine cooling system using a refrigerant vaporization heat, characterized in that the engine refrigerant jacket 10 is composed of a refrigerant (not shown) that can be boiled by the waste heat received from the engine.

The engine cooling system using refrigerant vaporization heat according to claim 1, wherein the refrigerant (not shown) is one of water, antifreeze additive, freon refrigerant, natural refrigerant, and liquefied gas.

According to claim 1, wherein the upper withdrawal pipe of the condenser 11 to which the gas pipe 12 is connected to high and the lower withdrawal pipe of the condenser 11 to which the liquid pipe 13 is connected to low or An engine cooling system using refrigerant vaporization heat, characterized in that the condenser 11 is installed to be inclined so that the upper drawing pipe is made high and the drawing pipe is made low.

The vaporization heat of the refrigerant according to claim 1, wherein the gas conduit 12, the condenser 11, and the liquid conduit 13 are constituted by continuous conduits instead of the condenser 11 by piping. Engine cooling system.

According to claim 1, Between the gas pipe 12 and the engine refrigerant jacket 10 is installed by inserting a gas header 21 for collecting the gas refrigerant, the upper part is connected to the gas pipe 12 and the lower engine coolant jacket An engine using refrigerant vaporization heat, characterized in that a plurality of gas outlet pipe 22 is connected to penetrate the upper side of the engine refrigerant jacket 10 and the gas header 21 to withdraw the gas refrigerant generated in the (10). Cooling system.

The engine cooling system according to claim 1, wherein the engine refrigerant jacket (10) is an engine refrigerant jacket (10) of a generator, a ship, a truck, and a bus.

The engine cooling system according to claim 1, wherein a refrigerant supply pump (31) is provided on the liquid pipe (13) line.

8. The engine according to claim 7, further comprising a bypass circuit (71) provided with a check valve (72) for connecting the refrigerant supply pump (31) in parallel with the refrigerant supply pump (31). Cooling system.

The heat exchanger condenser 41 of claim 1, further comprising a separate primary cooling space and a secondary cooling space, which are formed to exchange heat with each other as a condenser. The pipe is connected to the gas pipe 12 and the lower withdrawal pipe is connected to the liquid pipe 13, the cooling heat source 42 is installed separately from the secondary cooling space of the heat exchanger condenser 41, the upper side is the upper pipe 43 ) And the lower side are connected to penetrate the lower pipe 44 and form a closed circuit so that a cooling fluid (not shown) made in the cold heat source 42 can circulate to the secondary cooling space of the heat exchanger condenser 41. Engine cooling system using refrigerant vaporization heat.

10. The engine cooling system according to claim 9, wherein the closed circuit connecting the cold heat source 42 and the secondary cooling space of the heat exchanger condenser 41 is one of a refrigeration circuit, a cold water circuit, and a cold circuit. .

According to claim 1, Engine coolant jacket 10 is installed on the lower side of the condenser 11, the refrigerant replenishment tank 91 is installed to allow the inflow / outflow of the refrigerant in the condenser 11 space of the condenser 11 One side (not shown) or on the one side of the liquid pipe 13, the refrigerant flow inlet and outlet pipe 92 is installed so as to pass through the lower side of the replenishment tank 91, the on-off valve 93 for controlling the flow of refrigerant on the refrigerant flow inlet and outlet 92 pipe Engine cooling system using a refrigerant vaporization heat, characterized in that to install.