KR20180023374A - Heat regenerator of vehicle and regenerating system with the same - Google Patents

Abstract

The present invention relates to a heat generator of a vehicle and a regenerating system with the same and, more specifically, to a heat generator of a vehicle, which stores heat of an engine and exhaust gas with cooling water. According to the present invention, the heat generator of a vehicle comprises: a heat exchanger which cooling water flows into and is discharged from; an internal case in which the heat exchanger is accommodated; a heat storage material filling the internal case; and an external case in which the internal case is accommodated, an insulation space in a vacuum state is provided between the internal case and the external case, and a suction port connected to a vacuum means mounted in a vehicle is formed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat accumulator,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulator for a vehicle and a heat accumulating system including the accumulator. More particularly, the present invention relates to a vehicle accumulator for storing heat of engine and exhaust gas using cooling water, and a heat accumulating system including the accumulator.

An engine of an automobile is a power generating device of an automobile which converts heat energy generated by burning fuel into kinetic energy and transmits the kinetic energy to the wheel through a drive line.

However, the energy used for driving the vehicle is limited to a part of the total generated energy, and most of the energy is dissipated to the atmosphere in the form of heat energy by the surface of the engine and the exhaust system and the exhaust gas.

Among them, the energy loss due to the exhaust gas at high temperature is particularly large. Therefore, the exhaust heat recovery system (EHRS) is applied to recover part of the exhaust heat and use it for indoor heating.

1, the conventional exhaust heat recovery apparatus is provided with a heat exchanger 3 surrounding the outer circumferential surface of the exhaust pipe 2, and an engine 1, a heat exchanger 3 and a heater 4 for indoor heating And a circulating cooling water pipe (5) is installed.

The cooling water discharged from the engine 1 is absorbed by the heat of the exhaust gas while passing through the heat exchanger 3 provided in the exhaust pipe 2 and then heated to pass through the heater 4 Heating is done. That is, heat of the exhaust gas discharged from the engine 1 through the exhaust pipe 2 to the atmosphere is recovered and used for indoor heating, thereby improving the energy utilization rate.

However, since the temperature of the cooling water is low before the engine is sufficiently heated, the utilization of the waste heat is low. Therefore, the heat of the engine and the exhaust gas is absorbed by the regenerator to improve the cold start performance, The technology has been developed in the same manner as that of the present applicant's domestic patent publication No. 2014-091203 (publication date 2016.01.27, name: exhaust heat storage device for automobile).

In addition, there has been development of regenerator for improving the heat storage performance. However, it is still necessary to develop the technology for the heat insulation performance of the regenerator and the structure of the engine.

Korean Patent Laid-Open Publication No. 2014-091203 (Publication date 2016.01.27, name: exhaust heat storage device of automobile)

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a vacuum heat exchanger for a vacuum heat exchanger, And to provide a vehicle heat storage system capable of maintaining a high degree of vacuum by using a pump.

The vehicle heat accumulator according to the embodiment of the present invention includes a heat exchanger 100 through which cooling water is introduced and exhausted; An inner case 200 in which the heat exchanger 100 is accommodated; A heat storage material 300 filled in the inner case; And an outer case (400) having a heat insulating space (500) in a vacuum state between the inner case and the inner case, and having a suction port (420) connected to the vacuum means (20) mounted in the vehicle; And a control unit.

Also, the thermal storage material 300 according to an embodiment of the present invention may be a phase change material.

In addition, the outer case 400 according to the embodiment of the present invention may further include a vacuum insulation panel (VIP) in the heat insulating space 500.

The ribs 600 may protrude from the outer circumferential surface of the inner case 200 or the inner circumferential surface of the outer case 400. In this case,

Also, the heat exchanger 100 according to the embodiment of the present invention may be a heat exchanger 100 of a plate 110 type.

Also, the heat exchanger 100 according to the embodiment of the present invention includes a plate 110 having a plurality of stacked plates 110 coupled with the upper plate 111 and the lower plate 112 and having a cooling water flow space therein. A first communicating part 121 and a second communicating part 122 protruding outside the plate 110 and communicating with the adjacent plate 110; And an inlet port (131) and a second communication port (122) communicating with the first communication section (121) at the uppermost or lowermost plate (110) among the plurality of stacked plates (110) A discharge port 132 through which the cooling water is discharged; . ≪ / RTI >

In the heat exchanger 100 according to the embodiment of the present invention, the first communicating part 121 and the second communicating part 122 are disposed adjacent to each other, and between the first communicating part 121 and the second communicating part 122, And may include a baffle 141.

In addition, the plate 110 according to the embodiment of the present invention includes a circular bead 142 protruding inwardly, and a refrigerant flowing through the first communication part 121 flows toward the second communication part 122 And a curved bead 143 protruding along a direction in which the beads 143 are formed.

In addition, the plate 110 according to the embodiment of the present invention includes a tab 151 protruding downward in a predetermined edge region of the upper plate 111; And a fixing groove (152) formed at the edge of the lower plate (112) at a position corresponding to the tab (151). . ≪ / RTI >

In addition, an inlet 220 for injecting the heat storage material 300 may be formed in the inner case 200 according to an embodiment of the present invention.

Further, the vehicle heat storage system according to the embodiment of the present invention includes a vehicle heat accumulator 10; And a vacuum means (20) installed inside the vehicle, connected through the suction pipe (420) and the suction pipe (30). And < RTI ID = 0.0 >

Also, in the vehicle heat storage system 1000 according to the embodiment of the present invention, the cooling water passing through the engine can pass through the heat exchanger 100 of the automotive heat accumulator 10.

In addition, the vacuum means 20 according to the embodiment of the present invention may be a vacuum pump 21 or an intake manifold 22 installed in the engine.

Further, in the vehicle heat storage system 1000 according to the embodiment of the present invention, when applied to an electric vehicle, the vacuum means 20 may be a vacuum pump for a steering wheel.

Also, in the vehicle heat storage system 1000 according to the embodiment of the present invention, a check valve 40 may be installed on the suction pipe 30 connected to the inlet port 420 of the regenerator.

Accordingly, the vehicle heat storage system according to the present invention has an advantage that heat storage and heat insulation performance can be further improved. In order to form a heat-insulating space in an accumulator vacuum state, It is possible to maintain a high degree of vacuum.

In addition, the regenerator of the present invention stores heat of the engine cooling water through the phase change material and has a heat insulating performance similar to that of the high vacuum heat insulating container by using vacuum heat insulation without using a separate getter, The storage capacity is improved, and the energy storage efficiency can be maintained constant for a long time.

In addition, the vehicle heat storage system of the present invention is provided with a check valve on a suction pipe for sucking air in a heat insulating space in an accumulator, so that the vacuum state can be maintained even when the vehicle traveling mode is changed.

In addition, the present invention is applicable to an electric vehicle as well as a vehicle having an internal combustion engine, and has an advantage of high utilization.

Further, the present invention can further improve the cold starting performance and the instant heating performance.

1 is a configuration diagram of a vehicle exhaust heat recovery apparatus according to the prior art;
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle heat storage system.
FIG. 3 is a perspective view of a heat exchanger for a vehicle according to the present invention. FIG.
4 is an exploded perspective view of a heat exchanger for a vehicle according to the present invention.
5 is a perspective view showing a plate for an automobile heat-accumulating device according to the present invention.
6 is a perspective view showing a structure of a coupling part of the upper plate and the lower plate;
7 is a perspective view showing an inner case of an accumulator for a vehicle according to the present invention in an inverted state.

Hereinafter, a vehicle heat accumulator and a heat storage system including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle heat accumulator for storing heat of engine and exhaust gas using cooling water, and a heat storage system including the same.

However, the application field of the present invention is not limited to a vehicle including an engine and is applicable to an electric vehicle and a hybrid vehicle. In the case of an electric vehicle, the electric motor is not a cooling water for cooling the engine, Lt; RTI ID = 0.0 > cooling < / RTI >

2, a vehicle heat storage system 1000 according to an embodiment of the present invention largely includes a vehicle heat accumulator 10 and a vacuum means 20. [

At this time, when the vehicle heat storage system 1000 is applied to a vehicle including an engine, heat is stored as cooling water passing through the engine passes through the automotive heat accumulator 10.

When the temperature of the cooling water is high, the vehicle heat storage system 1000 opens the accumulator side line to store heat in the accumulator and then opens the accumulator line when the engine is restarted after the engine has been stopped for a long time The heat stored in the regenerator can be sent to the heater or engine for cold start or immediate heating.

3, the automotive heat accumulator 10 includes a heat exchanger 100 through which cooling water passes, an inner case (not shown) in which the heat exchanger 100 is accommodated A heat storage material 300 that is filled between the heat exchanger 100 and the inner case 200 and an outer case 400 that receives the inner case 200.

As shown in FIGS. 4 and 5, the heat exchanger 100 may be formed as a plate 110 type. At this time, the heat exchanger 100 is not necessarily limited to the plate 110 type, and can be changed in various forms such as a fin tube type, a double pipe type, and the like.

The heat exchanger 100 includes a plate 110, a first communicating portion 121, a second communicating portion 122, an inlet 131, and an outlet (not shown) 132).

The plate 110 is coupled with the upper plate 111 and the lower plate 112, and a cooling water flow space is formed therein, and a plurality of the plates 110 are stacked in the height direction.

At this time, the upper plate 111 and the lower plate 112 are bonded to each other and brazed to each other at the edge portions.

When the upper plate 111 and the lower plate 112 are fixed to each other, the plate 110 protrudes downward from a predetermined region of the edge of the upper plate 111, And a fixing groove 152 formed at an edge of the lower plate 112 at a position corresponding to the tab 151. [

A plurality of tabs 151 and fixing grooves 152 may be formed at the edge portions of the upper plate 111 and the lower plate 112. Alternating portions may be formed on both sides of the upper plate 111 and the lower plate 112, .

Accordingly, the tabs 151 are inserted into the fixing grooves 152 to keep the upper plate 111 and the lower plate 112 in a fixed state, so that the brazing operation can be easily performed.

The first communication part 121 and the second communication part 122 protrude to the outside of the plate 110 and are connected to the neighboring plate 110 to communicate with each other.

The inlet port 131 is formed to communicate with the first communication section 121 at the uppermost or lowermost plate 110 among the plurality of the plates 110 so that the cooling water flows into the inlet port 131, And communicates with the second communication part 122 to discharge the cooling water.

The plate 110 may include a baffle 141 disposed adjacent to the first communication part 121 and the second communication part 122 and protruding inwardly from the plate 110 have.

The baffle 141 is linearly extended inwardly from a rim of the plate 110 through a gap between the cooling water inlet 131 and the outlet 132. That is, the baffle 141 divides the inside space of the plate 110 into a portion into which the cooling water flows and a portion into which the cooling water is discharged so that the cooling water flowing into the plate 110 flows from the inlet 131 to the outlet 132 And flows through the baffle 141 in a substantially U-FLOW fashion to be discharged to the discharge port 132. [

In addition, the plate 110 includes a circular bead 142 protruding inward of the plate 110, and a coolant flowing through the first communication part 121 to flow toward the second communication part 122 And may further include curved beads 143 protruding along the direction.

A plurality of the circular beads 142 are formed on both sides of the baffle 141. The circular bead 142 acts as a plurality of resistive (collision) bodies at regular intervals in the flow of cooling water. When the flow of the cooling water having the turbulent flow shape repeatedly collides with the plurality of circular beads 142, Thereby forming a generally stable laminar flow. By stabilizing the flow, the incoming cooling water can flow evenly throughout the plate-type tube.

The curved beads 143 are formed in a curved shape between the cooling water inflow space defined by the baffle 141 and the cooling water discharge space to smoothly connect the flow of the cooling water from the cooling water inflow space to the discharge space.

In the heat exchanger 100, the baffle 141, the circular bead 142, and the curved bead 143 can uniformly flow the cooling water uniformly inside the plate 110, thereby improving the heat exchange performance, There is an effect that the vibration and the noise caused by the vibration are reduced.

In the heat exchanger 100, there is a space between the adjacent plates 110 due to the protruding height of the first and second communicating portions 121 and 122, A cooling fin may further be interposed to increase the heat exchange area.

The heat exchanger 100 constructed as described above is accommodated in the inner case 200, as shown in FIG.

The inner case 200 has a cylindrical shape and includes an inner case cover 210 having an upper portion opened to insert the heat exchanger 100 and covering the opening after the heat exchanger 100 is inserted. The inner case 200 and the inner case cover 210 may be made of a plastic material.

The inner case cover 210 is provided with an inlet pipe 231 and an outlet pipe 232 for allowing the cooling water to flow into and out of the heat exchanger 100.

When the inner case 200 and the inner case cover 210 are assembled as described above, the heat storage material 300 is injected into the inner case 200. For this, an injection port 220 is formed through the bottom of the inner case 200 as shown in FIG.

The heat storage material 300 is injected through the injection port 220 to fill the space between the heat exchanger 100 and the inner case 200 in the inner space of the inner case 200 . The heat storage material 300 is completely filled in the space between the plates 110 of the heat exchanger 100. The injection port 220 is also used as an air vent hole for smooth injection when the thermal storage material 300 is injected. After the injection of the heat storage material 300 is completed, the injection port 220 is closed by fastening a screw to the injection port 220.

The heat storage material 300 may be a phase change material.

Phase change material (PCM) refers to all materials whose properties vary from a solid phase to a liquid phase or a gas phase. Each of these materials has its own unique characteristics. .

In addition, phase change materials are environmentally friendly materials that have high material stability, do not easily change the properties of the material during superheating, and do not corrode surrounding metals and materials.

As described above, in the present invention, since a heat storage device for recovering waste heat of a vehicle is developed using a high heat storage capacity of a phase change material, the heat insulation performance is very important for effectively using the phase change material.

A heat insulating space 500 in a vacuum state is formed between the inner case 200 and the outer case 400 in order to further improve the heat insulating performance in the vehicle heat exchanger 10, The vacuum state of the vehicle is maintained through the vacuum means 20 of the vehicle connected to the vacuum pump 420.

The heat insulating space 500 may further include a vacuum insulation panel (VIP) along the outer circumferential surface of the inner case 200. The vacuum insulating material may be disposed between the inner case 200 and the outer case 400 So that the space is kept in a vacuum state.

Vacuum insulation panel (VIP) is a sealing material which is sealed in an airtight sealing material and is treated in a vacuum state. It has a very good insulation effect compared to conventional insulation materials.

The inner case 200 and the inner case 200 are accommodated in the outer case 400 as shown in FIG. Two pipe holes 421 and 422 are formed in the outer case cover 410 so that the inlet pipe 231 of the inner case 200 and the outlet pipe 431 of the inner case 200 are connected to each other. So that the upper portion 232 can be exposed upward.

The outer case 400 may have a cylindrical shape similar to the inner case 200 and may have a suction port 420 as a passage for exerting negative pressure from the outside in the inner heat insulating space 500.

The outer case 400 serves as an outermost side of heat storage and serves to protect the inner heat insulating space 500 from impact. The outer case 400 and the outer case cover 410 are made of a plastic material .

The ribs 600 are protruded from the outer circumferential surface of the inner case 200 or the inner circumferential surface of the outer case 400 so that the inner case 200 is inserted into the outer case 400 It is preferable that the heat insulating space 500 of a certain size can be held without being shifted to any one side.

The ribs 600 may be formed to have a lattice shape in which a plurality of transverse members and longitudinal members are orthogonal to each other. The ribs 600 serve to reinforce the strength of the inner case 200.

Accordingly, the inner case 200 can withstand the increase of the inner pressure generated by the phase expansion of the phase change material, which is the heat storage material 300 filled in the inner case, due to the expansion of the volume.

The heat storage system 1000 for a vehicle including the above-described vehicle heat accumulator 10 is connected to the heat sink inlet 420 through the suction pipe 30 to make the heat insulating space 500 vacuum. , And further includes a vacuum means (20) mounted inside the vehicle.

As shown in FIG. 2, the vacuum means 20 may be a vacuum pump 21 or an intake manifold 22 installed in the engine when the vehicle includes an engine.

In another embodiment, when the vacuum means 20 is applied to an electric vehicle, a vacuum pump for a steering wheel may be utilized.

In the vehicle heat storage system 1000 according to the embodiment of the present invention, the check valve 40 is provided on the suction pipe 30 for sucking air in the heat insulating space 500 of the above-described automotive heat accumulator 10, So that the vacuum state can be maintained even when the traveling mode is changed.

That is, even if the external environment is changed according to the vehicle driving mode, the check valve 40 installed on the suction pipe 30 minimizes the change in the air injection into the heat insulating space 500 in a vacuum state, .

Accordingly, the heat accumulating and heat insulating performance of the vehicle heat accumulator 10 according to the present invention can be further improved. The vehicle heat accumulating system 1000 includes the heat accumulating space 500 formed in the heat accumulating vacuum state It is possible to maintain a high degree of vacuum by using a vacuum pump 21 mounted in an existing vehicle.

In addition, the regenerator of the present invention stores heat of the engine cooling water through the phase change material and has a heat insulating performance similar to that of the high vacuum heat insulating container by using vacuum heat insulation without using a separate getter, The storage capacity is improved, and the energy storage efficiency can be maintained constant for a long time.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It goes without saying that various modifications can be made.

1000: Vehicle heat storage system
10: Vehicle shaft opening 20: Vacuum means
21: Vacuum pump 22: Intake manifold
30: Suction pipe 40: Check valve
100: heat exchanger
110: Plate
111: upper plate 112: lower plate
121: first communicating portion 122: second communicating portion
131: inlet 132: outlet
141: Baffle 142: Circular bead
143: Curved Bead
151: tab 152: fixing groove
200: inner case
210: inner case cover 220: inlet
231: inlet tube 232: outlet tube
300: Thermal storage material
400: outer case
410: outer case cover 420: inlet
421, 422: Pipe hole
500: Insulation space
600: rib

Claims (15)

A heat exchanger (100) through which cooling water flows in and out;
An inner case 200 in which the heat exchanger 100 is accommodated;
A heat storage material 300 filled in the inner case; And
An outer case 400 having a heat insulating space 500 in a vacuum state between the inner case and the inner case and having a suction port 420 connected to the vacuum means 20 mounted in the vehicle; And an oil passage for discharging oil from the oil passage.
The method according to claim 1,
The heat storage material (300)
Wherein the phase change material is a phase change material.
The method according to claim 1,
The outer case 400
Characterized in that a vacuum insulation panel (VIP) is further provided in the heat insulating space (500).
The method according to claim 1,
The automotive heat accumulator (10)
And ribs (600) protrude from the outer circumferential surface of the inner case (200) or the inner circumferential surface of the outer case (400).
The method according to claim 1,
The heat exchanger (100)
(110) type heat exchanger (100).
6. The method of claim 5,
The heat exchanger (100)
An upper plate 111 and a lower plate 112 are coupled to form a cooling water flow space therein, and a plurality of plates 110 are stacked;
A first communicating part 121 and a second communicating part 122 protruding outside the plate 110 and communicating with the adjacent plate 110; And
And communicates with the inlet 131 and the second communication portion 122 through which the cooling water flows in the uppermost or lowermost plate 110 among the plurality of stacked plates 110 in communication with the first communication portion 121 An outlet 132 through which cooling water is discharged; And a plurality of heat accumulating portions (22).
The method according to claim 6,
The heat exchanger (100)
The first communicating part 121 and the second communicating part 122 are disposed adjacent to each other,
And a baffle (141) projecting inwardly of the plate (110) therebetween.
8. The method of claim 7,
The plate (110)
A circular bead 142 protruding inward,
And a curved bead (143) protruded along a direction in which the refrigerant flowing through the first communication part (121) flows toward the second communication part (122).
The method according to claim 6,
The plate (110)
A tab 151 protruding downward in a predetermined region of the edge of the upper plate 111; And
A fixing groove 152 formed at an edge of the lower plate 112 at a position corresponding to the tab 151; And a plurality of heat accumulating portions (22).
The method according to claim 1,
In the inner case 200,
And an injection port (220) for injecting the heat storage material (300) is formed through the through hole.
An automotive heat accumulator (10) according to any one of claims 1 to 10; And
A vacuum means (20) connected to the heat exchanger inlet (420) through a suction pipe (30) and mounted inside the vehicle; And a heat storage system for a vehicle.
12. The method of claim 11,
The vehicle heat storage system 1000 includes:
And the cooling water passed through the engine passes through the heat exchanger (100) of the above-described accumulator (10) for a vehicle.
13. The method of claim 12,
The vacuum means (20)
(21) or an intake manifold (22) installed in the engine.
12. The method of claim 11,
The vehicle heat storage system 1000 includes:
Wherein the vacuum means (20) is a vacuum pump for a steering wheel when applied to an electric vehicle.
12. The method of claim 11,
The vehicle heat storage system 1000 includes:
And a check valve (40) is installed on a suction pipe (30) connected to the inlet port (420) of the regenerator.

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