KR920007450Y1 - Cooling device for vehicle - Google Patents

Abstract

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Description

Absorption cooling device using engine waste heat of automobile

1 is a cooling water circulation system during cooling of the cooling device according to the present invention.

2 is a comparison diagram of the state in which the flow path is changed according to the four-way valve of the present invention air conditioner, (a) is a circulatory system diagram during operation, (b) is a circulatory system diagram during non-operation.

3 is a cycle flow chart of an absorption refrigerator configured with a cooling device according to an embodiment of the present invention.

4 is a circuit diagram of the electric system of the present invention.

5 is an air intake capacity regulator for cooling the engine.

6 is a plan sectional and front sectional view of a four-way valve according to the present invention.

* Explanation of symbols for main parts of the drawings

1: radiator 2: cooler

3: engine 4: 4-way valve

5: damper control motor 6: damper

7: temperature controller 8: Wen motor

9: solenoid 11: absorber

12: regenerator 13: vapor separator

14: still

15: Condenser Restrictor

16: Evaporator Restrictor

17 Absorber Piping 18 Evaporator

19: solution pump

20: Solution Restrictor

21: cold water circulation pump

22: Generator 23: 4-way valve motor

25: rotor

The present invention relates to a cooling device using the waste heat of the engine of the automobile, and absorbs the circulating water circulated to the radiator connected to the engine of the cooling system for cooling the engine in the driving state by sending it to the radiator. When the air flows into the freezer and cools it, the engine is configured to operate in a good state of the engine as much as possible.

However, the higher the speed of the car, the more the engine is overheated and the temperature is increased. In addition, the refrigeration compressor attached to the conventional air conditioner is subjected to a load, which may carry a risk through the overheating of the engine.

In addition, the speed of the conventional air conditioner, the faster the capacity of the air conditioner due to the increase in the amount of heat transfer to the interior of the car heat in the outside atmosphere.

However, in this type of absorption cooling system using the engine waste heat of the car, as the engine is overheated, the cooling capacity increases, and thus, the cooling can be performed comfortably. Since the waste heat of the vehicle engine is supplied to the absorption chiller, the engine cooling can be efficiently operated.

In addition, the conventional automotive cooling device is operated by a vehicle engine with a refrigeration compressor has a disadvantage in that the engine power is divided and the power of the running vehicle is weakened, but the present invention uses the waste heat of the car, so no load is applied to the engine. It can prevent the loss of power and can operate efficiently.

The present invention uses a known absorption chiller in order to use the waste heat of the automobile and the absorption chiller is basically provided with a cooler, an evaporator, an absorber, and a regenerator and the coolant pipe of the engine is connected to the regenerator.

Therefore, the heat generated from the engine heats the aqueous solution in the regenerator to generate steam refrigerant, which is transferred to the cooler as in osmosis.

The steam refrigerant is cooled and condensed to external air in the condenser, becomes a liquid state, and flows to the evaporator. The evaporator absorbs room heat and warms up the circulation air of about 12 ° C, passing through the heat exchanger, by heat exchange with the liquid refrigerant. The temperature of the cooling cold water circulating water is reduced to about 7 ℃, instead the liquid refrigerant is converted to a refrigerant in the vapor state as it absorbs heat.

The refrigerant in the vapor state enters the absorber and is absorbed by the water in the absorber. The aqueous solution is pushed to the regenerator by the solution pump to repeat the above operation.

In this case, the waste heat of the engine needs to be cut off from the regenerator as necessary. For this purpose, a 4-way valve is installed in the middle of the engine coolant pipe so that the flow path can be changed.

When described in more detail with reference to the accompanying drawings, the contents of the present invention as follows.

However, as long as there is no specific description of the dimensions, quantities, materials, and state arrangements of components, which are constituted in the embodiments of the present invention, the present invention is not limited thereto.

1 and 2 (a) shows the state when the air conditioner of the present invention is operated, and the recirculator of the refrigerator when water circulated from the engine 3 is absorbed through the four-way valve 4 ( 12) The circulating water flowing into the engine cooling radiator (1) is supplied to the engine cooling radiator (1) again while being supplied with a heat source for supplying a heat source for the refrigeration of the absorption chiller to be refrigerated. It is to be formed to be able to improve the cooling efficiency of the engine (3).

The specific circulation system will be described with reference to FIG.

Due to the continuous absorption in absorption (1), the aqueous solution (water + ammonia) turns into a strong solution and the used solution is pumped to the regenerator by the solution pump.

The steel solution is converted into a medicinal solution by evaporation of the refrigerant into the heat source of the engine 3 supplied to the regenerator 12. At this time, the pressure generated inside the regenerator 12 causes the refrigerant to be converted into a liquid-vapor separator → rectifier → condenser → evaporator. And the chemical solution enters the absorber 11 on the low pressure side.

The steam refrigerant containing water introduced from the vapor separator (13) in which water is separated and dropped together with the refrigerant is separated from the water using the rectifier (14).

As the steel solution flows in the pipe and the steam coolant flows outside the pipe, the temperature of the steel solution inside the pipe increases while the temperature of the steam refrigerant decreases.

Accordingly, the moisture contained in the steam refrigerant condenses on the outer surface of the pipe and falls, so that only pure steam refrigerant is transferred to the condenser.

In addition, the cooling of the vapor refrigerant accompanied by this increases the efficiency by accelerating the vapor refrigerant liquid.

Here, the condensed water dropped into the regenerator 12 is indirectly heated and recovered to the liquid refrigerant separator 13 by a siphon action.

The high temperature and high pressure steam refrigerant leaving the distiller enters the condenser located at the outer top of the condenser and becomes a liquid refrigerant by the temperature drop by the operation of the condenser cooling fan, and the liquid refrigerant passes through the condenser restrainer (15). Pressure is intensified and speed is lowered.

The low-speed liquid refrigerant passing through the condenser restrainer 15 flows through the outer tube of the heat exchanger tube. At this time, mutual exchange of heat occurs between the low-temperature steam refrigerants flowing through the inner tube, so that the liquid refrigerant is supercooled and the steam refrigerant is overheated to increase efficiency. do.

The supercooled refrigerant passing through the heat exchanger tube passes through the evaporator restorer 16 and is subjected to pressure increase and absorbs heat from the cooling return sprayed from the cold water spray tube, thereby cooling the evaporative refrigerant to 5-7 ° C.

The vaporized vapor refrigerant enters the inner tube of the heat exchanger tube to supercool the liquid refrigerant flowing in the outer tube, and then enters the absorber 11.

The vapor refrigerant generated in the evaporator 18 enters the absorber 11 containing the medicinal solution and the medicinal solution is absorbed and liquefied to form a refrigerant at low pressure.

The high temperature chemical solution coming from the regenerator flows into the spray plate and cools while being dispersed and dropped on the surface of the heat exchange pipe through which the low temperature steel solution flows, thereby accelerating the absorption of the steam refrigerant and increasing the absorption rate to increase efficiency.

The refrigerant accumulated in the bottom and the incomplete aqueous solution enter the absorber pipe 17 through several supply pipes.

The incomplete aqueous solution is cooled by the outside air by the operation of the condenser cooling fan mounted on the condenser to increase the absorption rate of the aqueous solution, thereby making the steel solution absorbing the refrigerant 100%.

The steel solution produced in the absorber pipe (17) enters the tank of the solution pump and is pumped by the pump through the heat exchanger tubes in the rectifier (14) and the absorber (11) to a high compression compressor.

The steel solution discharged from the solution pump 19 passes through the heat exchanger tube in the rectifier 14 at a relatively low temperature and undergoes a first heat exchange with the high temperature steam refrigerant to increase the temperature, and then passes the heat exchanger tube in the absorber 11 again. Secondary heat exchange is performed with the high temperature chemical solution and the temperature is raised and supplied to the regenerator 12.

The temperature rise of the steel solution serves to increase the efficiency of the device due to the preheating effect, and the steel solution introduced into the regenerator 12 is cooled by sequentially repeating the above-described operations.

FIG. 2 (b) shows a state in which the air conditioner is inactive, and a flow path of the cooling water is introduced so that the circulating water taken out of the engine 3 flows directly into the radiator 1 by the four-way valve 4. After being formed and cooled, the engine is cooled while repeating the circulation with the water target of the engine 3 again.

4 is a temperature controller (7) is turned on (ON) when the vehicle temperature is raised by the temperature controller (7) attached to the interior of the vehicle to maintain the proper temperature of the vehicle interior when cooling the four-way valve (4) cooling circulation system When the flow path is converted as shown in FIG. 2 (a) and cooled, and the temperature inside the vehicle is lowered to an appropriate temperature, the four-way valve 4 is converted as shown in FIG. It is a device that keeps the temperature inside the vehicle constant while repeating the conversion made to the engine cooling system.

5 is a suction air volume control damper for adjusting the flow rate of cooling air to cool the circulation water of the engine cooling system from the outside to maintain the cooling efficiency and engine efficiency balance of the absorption chiller when the outside temperature is not constant (6) is attached to the damper control motor (5) that is sensed by the temperature of the engine (3) is installed to maintain the maximum effect.

In the present invention, the four-way valve 4 has a rotor 25 which is formed in a flow direction in four directions and rotated by a motor 23 in the valve body 4, as shown in FIG. The rotor 25 has two flow paths 24 connected to each other in two directions to connect two four-way flow paths of the valve body 4 to each other in accordance with the operation of the motor 23. It can be rotated to change the flow path.

As described above, the present invention automatically adjusts the proper temperature of the absorption chiller and the engine to make the operation very convenient, easy and economical to operate. Overheating can compulsory to shorten the lifespan of parts, and it is useful to prevent fuel savings and physical fatigue by efficient driving and to allow the driver to operate conveniently and comfortably.

Claims (2)

The absorption chiller is installed in the vehicle, and the regenerator 12 of the absorption chiller is connected to the circulation cooling water pipe of the automobile engine 3, and a pair of flow paths 24 are provided in two directions in the valve body 4 in which the flow paths are formed in four directions. Is provided with a rotor 25 with a four-way valve 4 to be rotated by the motor 23 is installed in the middle of the circulating cooling water pipe and is provided by the temperature controller 7 installed at one end of the vehicle compartment. Absorption cooling device using the engine heat of the vehicle, characterized in that the operation of the absorption chiller is made by changing the flow path of the four-way valve (4). According to claim 1, wherein the cooler (2) of the absorption chiller and the radiator (1) through which the engine circulating coolant passes, the air inlet damper (6) is installed in front of the motor by the engine temperature sensor The damper (6) is adjusted by the (5) so that the outside air can be properly introduced in accordance with the temperature, the absorption type cooling paper using the engine waste heat of the vehicle.