KR102148712B1 - Regenerator for vehicle - Google Patents

Abstract

The present invention relates to a vehicle heat storage device, wherein a plurality of plate-shaped tubes made of an upper plate and a lower plate are stacked to constitute a heat exchanger, and a heat storage material is filled between the heat exchanger and the inner case, and the inner case is wrapped by a vacuum insulating material, and It consists of a structure in which the outer case is provided. Heat exchange performance and heat storage performance are improved.

Description

Regenerator for vehicle {Regenerator for vehicle}

The present invention relates to a vehicle heat storage device, and more particularly, to a vehicle heat storage device capable of recovering/storing heat from an engine and exhaust gas using coolant and then using it for cold starting and heating.

The engine of a vehicle is an engine that converts heat energy generated by burning fuel into mechanical energy.

However, since a large amount of energy is lost by heat emitted from the engine itself and heat discharged in the form of combustion exhaust gas, such waste heat energy is absorbed by using cooling water and used for heating.

However, before the engine is sufficiently heated, the temperature of the coolant is low, so the utilization of waste heat is low. Therefore, the heat from the engine and exhaust gas is absorbed by using a regenerator to improve the cold start performance and to enable immediate heating at the beginning of the start. The technology was developed in the same manner as Korean Patent Application No. 10-2014-0091203, which is the prior application of the present applicant.

Since the prior art includes a heat storage device as a main component, since the performance of the heat storage device determines the cold start performance and the immediate heating performance, it is required to develop a heat storage device having a variety of structures having superior heat storage performance.

Accordingly, the present invention has been invented in response to the above requirements, and an object of the present invention is to provide a vehicle heat storage device having a new structure that has better heat storage and heat exchange performance.

The present invention for achieving the above object is a heat exchanger through which cooling water passes, an inner case accommodating the heat exchanger, a heat storage material filled between the heat exchanger and the inner case, and an outer case accommodating the inner case And a heat insulating space formed between the inner case and the outer case, wherein the heat exchanger is formed by stacking a plurality of plate-shaped tubes made of an upper plate and a lower plate in a state in which they communicate with each other.

Cooling fins are formed between the plate-shaped tubes.

A connecting portion including an inlet and an outlet is protruded from the upper plate and the lower plate of the plate-shaped tube, and the upper plate-shaped tube and the lower plate-shaped tube are stacked in a structure in which the connection portions are interconnected.

A baffle is formed in the plate-shaped tube to block between the inlet and the outlet.

In the plate-shaped tube, a plurality of circular beads colliding with the flow of cooling water are formed in both spaces partitioned by baffles.

Curved beads for smoothly guiding the flow of coolant are formed at the connection portions of the spaces on both sides of the plate-shaped tube divided by baffles.

Fixing grooves into which tabs and tabs are inserted are formed in the upper plate and the lower plate of the plate-shaped tube, respectively.

An female flange having a pipe insertion hole connected to the inlet and outlet is mounted on the upper surface of the heat exchanger, and a male flange having an inlet pipe and an outlet pipe is formed on the bottom of the inner case cover covering the upper opening of the inner case. , The female flange and the male flange are coupled to each other when assembling the inner case cover to form a cooling water inflow path and a discharge path.

O-rings are respectively installed between the contact surfaces of the female flange and the male flange, and between the contact surfaces of the inlet pipe and the outlet pipe and the corresponding pipe insertion holes.

The inlet pipe and outlet pipe are disposed adjacent to each other to reduce the non-insulating area due to the inlet pipe and the outlet pipe in the vacuum insulating material cover surrounding the inner case cover.

The heat storage material may be a phase change material (PCM).

A vacuum insulator surrounding the inner case is installed in the insulating space between the inner case and the outer case.

Ribs contacting the inner circumferential surface of the vacuum insulating material are protruded on the outer circumferential surface of the inner case.

Ribs contacting the inner peripheral surface of the outer case are protruded on the outer peripheral surface of the inner case.

The rib may form a lattice shape by intersecting a plurality of horizontal members and vertical members.

An injection hole for injecting a heat storage material is formed through the bottom of the inner case.

After the injection of the heat storage material is completed, the injection port is closed by fastening a screw.

The outer case cover covering the upper opening of the outer case is formed with a pipe hole through which the inlet pipe and the outlet pipe respectively pass.

According to the present invention as described above, a heat storage device having a new structure different from the conventional heat storage device is provided.

Since the heat storage device has improved heat exchange performance and heat storage performance as described above, it absorbs a large amount of heat from the cooling water when installed in the cooling water line of the vehicle, and can be stored for a long time, and when necessary, a large amount of heat is converted into Can be released.

Therefore, there is an effect that the cold start performance and the immediate heating performance are further improved.

1 is an exemplary view in use of a heat storage device according to the present invention.
Figure 2 is an exploded perspective view showing the configuration of a heat storage device according to the present invention.
3 is a perspective view of a heat exchanger that is one configuration of the present invention.
4 is a perspective view of a plate tube constituting the heat exchanger.
FIG. 5 is a cross-sectional view taken along line V-V of FIG. 4, which is a cross-sectional view of a plate-shaped tube, showing a state in which plate-shaped tubes of the same structure are stacked.
6 is an enlarged view of part A of FIG. 4, and is a perspective view showing a structure of a coupling part between an upper plate and a lower plate of the plate-shaped tube.
FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 4, showing the inner side of the plate-shaped tube.
8 is a perspective view of an inner case in which the heat exchanger is incorporated.
9 is a perspective view showing the cover of the inner case upside down.
Figure 10 is a perspective view showing the inner case upside down.
11 is a perspective view showing a state in which the inner case is wrapped with a vacuum insulating material.
12 is a perspective view of the inner case and the outer case in which the vacuum insulation material is embedded.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. The thickness of the lines or the size of components shown in the accompanying drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention and may vary according to the intentions or precedents of users and operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view of a state of use of a heat accumulator according to the present invention. As shown, the heat accumulator 100 is an exhaust heat among the coolant lines connecting the engine 10 and the exhaust heat recovery device 20 and the heater 30. It is installed in parallel on the line connecting the recovery device 20 and the heater 30. A three-way valve 40 is installed at the branch point so as to selectively open and close a line through which coolant directly flows into the heater 30 and a line passing through the heat accumulator 100.

Therefore, when the temperature of the coolant is high, the heat accumulator 100 line is opened to store heat in the accumulator 100, and after the engine is stopped for a long time, the accumulator 100 line is opened again when the engine is restarted. The heat stored in the heat accumulator 100 can be sent to the heater 30 and the engine 10 and used for cold start or immediate heating.

The example shown above is an example of recovering exhaust heat, but even in a typical engine-heater cooling water line to which the exhaust heat recovery device 20 is not applied, engine heat is absorbed by installing a coolant inlet line to the heater and a heat accumulator in parallel. /Save and use in the same way.

Figure 2 is an exploded perspective view showing the configuration of the heat storage device according to the present invention, as shown, the heat storage device 100 according to the present invention is a heat exchanger 110, the heat exchanger 110 via the cooling water is received The inner case 120, the heat storage material filled between the heat exchanger 110 and the inner case 120, the outer case 140 accommodating the inner case 120, the inner case 120 and the outer case 140 It includes an insulating space formed between.

The heat exchanger 110 is configured by stacking a plurality of plate-shaped tubes 111 as shown in FIG. 3. The heat exchanger 110 is manufactured in a cylindrical shape to minimize the heat exchange area with the outside during insulation. Therefore, the plate-shaped tube 111 has a disk shape. The plurality of plate-shaped tubes 111 communicate with each other in a stacked state so that cooling water can flow through all the plate-shaped tubes 111.

The structure of the plate-shaped tube 111 will be described with reference to FIGS. 4 to 7. As shown, the plate-shaped tube 111 is formed by bonding the upper plate 111a and the lower plate 111b to each other. The rim portions of the upper plate 111a and the lower plate 111b are bonded to each other through brazing.

A space is formed between the upper plate 111a and the lower plate 111b so that the coolant can flow. Circular connection portions 111c are formed on the upper plate 111a and the lower plate 111b, respectively.

The connection part 111c is formed as a pair of left and right adjacent to each other, so that one side is used as a cooling water inlet 111ca, and the other side is used as a cooling water outlet 111cb.

When the plate-shaped tube 111 is stacked, the corresponding connection portions 111c of the upper plate-shaped tube and the lower plate-shaped tube are coupled to each other. To this end, the insertion end 111cc is protruded at one of the inlet 111ca and the outlet 111cb, so that the plate-shaped tube 111 can be inserted into the corresponding connection part 111c when the plate-shaped tube 111 is stacked. Between the connection portions 111c connected to each other are brazed to prevent leakage.

On the other hand, due to the protruding height of the connection part 111c, a space exists between the stacked upper/lower plate-shaped tubes 111, and in this space, cooling fins 112 for increasing the heat exchange area of the plate-shaped tube 111 ) Is formed. The cooling fins 112 may be formed in an upper plate-shaped tube or a lower plate-shaped tube, or both, and an empty space exists between the cooling fins 112.

When the upper plate 111a and the lower plate 111b are bonded and fixed to each other, the upper plate 111a and the lower plate 111b are provided with a tab 111da and a fixing groove so that the upper plate 111a and the lower plate 111b can be temporarily fixed to each other. (111db) is formed. A plurality of tabs 111da and fixing grooves 111db are formed on the edges of the upper plate 111a and the lower plate 111b, and may be alternately formed on both sides of the upper plate 111a and the lower plate 111b. The tab 111da is inserted into the fixing groove 111db so that the upper plate 111a and the lower plate 111b are temporarily fixed, so that the brazing operation can be easily performed.

On the other hand, a baffle 112a, a circular bead 112b, and a curved bead 112c are formed on the upper plate 111a and the lower plate 111b toward the inner space of the plate-shaped tube 111.

7 shows a cross-sectional shape in which a circular bead 112b is formed on the upper plate 111a and the lower plate 111b, respectively. The baffle 112a and the curved bead 112c are also shown in the same manner as the upper plate 111a and the lower plate. In each of (111b), portions protruding into the inner space are formed in a contact shape.

In plan view (refer to FIG. 4), the baffle 112a is formed in a straight line from the edge portion of the plate-shaped tube 111 through the space between the cooling water inlet 111ca and the outlet 111cb. That is, the baffle 112a divides the inner space of the plate-shaped tube 111 into a portion where cooling water is introduced and a portion where the cooling water is discharged, and the cooling water flowing into the plate-shaped tube 111 is discharged from the inlet 111ca from the outlet 111ca. The furnace is prevented from being immediately discharged and discharged through a predetermined path around the baffle 112a. (The arrow shown indicates the flow direction of the coolant.) That is, a sufficient length of the heat exchange pass is secured. Is to do.

A plurality of circular beads 112b are formed in spaces on both sides of the baffle 112a, respectively. The circular bead 112b acts as a plurality of resistance (collision) bodies at regular intervals in the flow of cooling water, and the flow of the cooling water having a turbulent flow repeatedly collides with the plurality of circular beads 112b while the circular bead 112b The stream line is formed at the rear of the motor to form a stable laminar flow overall. As the flow is stabilized, the inflow cooling water can flow evenly throughout the inside of the plate-shaped tube 111c.

The curved bead 112c is formed in a curved shape between the cooling water inflow space and the cooling water discharge space divided by the baffles 112a, and serves to smoothly connect the flow of cooling water from the cooling water inflow space to the discharge space.

The baffle 112a, the circular bead 112b, and the curved bead 112c allow cooling water to flow through the plate-shaped tube 111 in a stable flow state, thereby improving heat exchange performance and cooling water. There is an effect of reducing vibration and noise caused by flow.

The heat exchanger 110 made as described above is accommodated in the inner case 120 as shown in FIGS. 2 and 8. The inner case 120 has a cylindrical shape, the upper part is open to insert the heat exchanger 110, and includes an inner case cover 125 that covers the opening after the heat exchanger 110 is inserted. The inner case 120 and the inner case cover 125 are made of a plastic material.

The inner case cover 125 is provided with an inlet pipe 126 and an outlet pipe 127 to allow cooling water to flow into and out of the heat exchanger 110.

A pair of male and female flanges 210 and 220 are used to connect the inlet pipe 126 and the outlet pipe 127 to the heat exchanger 110 (see FIGS. 3 and 9).

The female flange 210 is mounted on the connection part 111c at the top of the heat exchanger 110. The female flange 210 is made of aluminum and is brazed on the top of the heat exchanger 110, and pipe insertion holes 211 and 212 connected to the inlet 111ca and the outlet 111cb of the connection part 111c are formed on both sides.

A bolt hole 213 is formed between the pipe insertion holes 211 and 212 for fastening bolts with the male flange 220.

An O-ring 214 is installed on the upper edge of the arm flange 210. The O-ring 214 acts between the contact surfaces of the female flange 210 and the male flange 220 to prevent the heat storage material filled in the inner case 120 from penetrating into the cooling water passage.

A male flange 220 is integrally formed on the bottom of the inner case cover 125. The male flange 220 is provided through the inlet pipe 126 and the outlet pipe 127 so as to protrude downward. The inlet pipe 126 and the outlet pipe 127 may be manufactured separately and screwed to the male flange 220 or may be integrally injection molded together with the inner case cover 125 and the male flange 220.

A bolt hole 128 is formed between the inlet pipe 126 and the outlet pipe 127 for fastening bolts with the female flange 210.

O-rings 123 are installed on the outer peripheries of the inlet pipe 126 and the outlet pipe 127 protruding downward of the male flange 220, respectively. This O-ring 123 acts between the inlet pipe 126 and the outlet pipe 127 and the corresponding pipe insertion holes 211 and 212 to prevent the cooling water passing through the heat exchanger 110 from leaking to the outside of the heat exchanger 110. give.

Accordingly, the heat exchanger 110 in which the female flange 210 is installed is inserted into the inner case 120, and the male flange 220 and the inlet pipe 126 and the outlet pipe 127 are provided in the upper opening thereof. When the cover 125 is covered, the inlet pipe 126 and the outlet pipe 127 are inserted into the pipe insertion holes 211 and 212 to form a cooling water inlet path and a discharge path. When bolts are inserted and fastened through the bolt holes 128 and 213, the coupling of the female/male flanges 210 and 220 is strengthened, and the sealing performance of the cooling water and the heat storage material by the O-rings 123 and 214 is improved.

At this time, the female flange 210 is made of aluminum, such as the heat exchanger 110, and the male flange 220 is made of plastic, such as the inner case cover 125, so that heat transfer between the two is not smoothly performed. ) The heat loss to the outside is reduced.

Ribs 121 are protruded on the outer circumferential surface of the inner case 120. The rib 121 is formed in a form in which a plurality of horizontal ribs and vertical ribs formed at equal intervals cross each other. The rib 121 protrudes from the outer circumferential surface of the inner case 120 to form a space between the inner case 120 and the vacuum insulator 140 (described later) so that this space can function as an insulating space. This insulating space can be formed as a vacuum space. The heat storage performance of the heat storage device 100 is improved by improving the heat insulation performance of the inner case 120 by the heat insulation space.

In addition, the rib 121 improves the rigidity of the inner case 120 so that it can withstand the internal pressure due to the phase change of the PCM (phase change material, described below) filled therein.

When the assembly of the inner case 120 and the inner case cover 125 is completed as described above, a heat storage material is injected into the inner case 120. To this end, an injection hole 122 is formed through the bottom of the inner case 120 as shown in FIG. 10.

The heat storage material is injected through the inlet 122 to fill the inner space of the inner case 120, that is, the space between the heat exchanger 110 and the inner case 120. The heat storage material is completely filled in the space between the cooling fins 112 of the plate-shaped tube 111. The injection port 122 is also used as an air drain hole for smooth injection when the heat storage material is injected. After the injection of the heat storage material is completed, the injection hole 122 is sealed by fastening a screw to the injection hole 122.

As the heat storage material, PCM (Phase change material; a phase change material, which stores as much heat as possible by utilizing latent heat during phase change) is used.

The inner case 120 assembled as described above is wrapped with a vacuum insulating material 130 as shown in FIGS. 2 and 11. Vacuum insulation panel (VIP) is a core material placed in a sealing material that maintains airtightness, and the interior is vacuum-treated, and has a very good insulation effect compared to conventional insulation materials.

Meanwhile, the vacuum insulating material cover 135 covering the upper portion of the inner case cover 125 cannot cover the entire upper surface of the inner case cover 125 because of the inlet pipe 126 and the outlet pipe 127. That is, a cutout 136 surrounding the periphery of the inlet pipe 126 and the outlet pipe 127 is inevitably formed in the vacuum insulating material cover 135.

This is due to the manufacturing characteristics of the material itself, which is a vacuum insulator, and manufactures the vacuum insulator cover 135 in a detailed shape enough to cover all the empty spaces between the inlet pipe 126 and the outlet pipe 127. Because it is impossible.

Therefore, in order to minimize the non-insulating area (heat loss area) such as the cutout 136, it is preferable to form the inlet pipe 126 and the outlet pipe 127 as close as possible, and for this purpose, the inlet of the plate-shaped tube 111 (111ca) and the discharge port (111cb) are formed as close as possible with the baffle (112a) between.

However, it should be avoided that the inlet pipe 126 and the outlet pipe 127 contact each other. In this case, it is because the inflow cooling water heat is absorbed by the discharged cooling water, and the inflow heat decreases from the point of view of the regenerator.

The inner case 120 wrapped with the vacuum insulating material 130 as described above is inserted into the outer case 140 as shown in FIGS. 2 and 12. The outer case cover 145 is also covered with the outer case 140, and two pipe holes 146 and 147 are formed in the outer case cover 145, so that the inlet pipe 126 and the outlet pipe 127 of the inner case 120 It is intended to be exposed upwards. The outer case 140 and the outer case cover 145 are made of a plastic material.

The space between the inner case 120 and the outer case 140 is filled by the vacuum insulation 130 and the vacuum insulation cover 135, but the vacuum insulation 130 and the vacuum insulation cover 135 are not applied, and a simple You can also leave it empty. In this case, by increasing the amount of protrusion of the ribs 121 formed on the surface of the inner case 120 so that the ribs 121 contact the inner circumferential surface of the outer case 140, the inner case 120 is moved to the outer case 140. To be supported. At this time, the empty space between the inner case 120 and the outer case 140 acts as an insulating space. It is as described above that the heat storage performance of the heat storage device 100 is improved by improving the heat insulation performance by the heat insulation space. If the heat insulation space is formed by vacuum, the heat insulation performance is further improved.

Meanwhile, the vacuum insulator 130 and the vacuum insulator cover 135 may be integrally formed by insert injection into the outer case 140 and the outer case cover 145, respectively. In this case, the assembly of the heat storage device 100 becomes simple.

As described above, the heat accumulator 100 according to the present invention absorbs and stores heat from the cooling water using PCM having excellent heat storage performance.

The heat exchanger 110 installed for heat exchange between the cooling water and the PCM is located inside the heat storage device 100 to minimize heat loss to the outside.

In particular, since the heat exchanger 110 is formed in a cylindrical shape, the heat loss area is minimized compared to other shapes.

The heat exchanger 110 has a structure in which a plurality of plate-shaped tubes 111 are stacked, and a baffle 112a, circular bead 112b, and curved bead 112c are formed in each plate-shaped tube 111 to flow cooling water. It is designed to ensure uniform, stable and sufficient path length throughout. Accordingly, heat exchange is smoothly performed between the plate-shaped tube 111 and the PCM on the outside, thereby improving heat storage performance.

In addition, a cooling fin 112 is formed in the space between the plate-shaped tubes 111 so that heat exchange with the PCM can be made more actively.

The inlet pipe 126 and the outlet pipe 127 of the heat exchanger 110 and the inner case cover 125 are connected with an female flange 210 and a male flange 220 made of different materials. The pipe 126 and the outlet pipe 127 is designed to reduce heat loss generated to the installation site. When the inlet pipe 126 and the outlet pipe 127 as well as the male flange 220 are formed integrally with the inner case cover 125 made of a plastic material, the amount of heat loss is further reduced by reducing heat transfer. In addition, there is an effect that the assembly work of the heat storage unit 100 is simplified by reducing the number of parts.

On the other hand, between the female flange 210 and the male flange 220, O-rings 123 and 214 are double installed on the outer and inner sides, respectively, to prevent the cooling water and PCM from penetrating into the other area.

The inlet 111ca and the outlet 111cb of the plate-shaped tube 111 are formed as close as possible, and accordingly, the distance between the inlet pipe 126 and the outlet pipe 127 of the inner case cover 125 is formed close. Accordingly, when the vacuum insulation cover 135 is installed, it is possible to minimize the area of the portion not covered by the insulation material, thereby reducing the amount of heat loss and improving the heat storage performance.

An empty space may be formed between the inner case 120 and the outer case 140. This empty space acts as an adiabatic space and prevents heat loss of the heat storage device 100, thereby improving the heat storage performance of the heat storage device 100.

In addition, a vacuum insulating material 130 may be installed in the space between the inner case 120 and the outer case 140. In this case, since heat loss of the heat storage device 100 is prevented by the excellent heat insulation performance of the vacuum heat storage material 130, the heat storage performance of the heat storage device 100 is improved.

Ribs 121 are protruding from the outer circumferential surface of the inner case 120, and the ribs 121 mutually support the inner case 120 and the outer case 140 and form a space between them. When the vacuum insulator 130 is installed in the space as described above, the rib 121 has a protruding amount of a contact with the inner circumferential surface of the vacuum insulator 130. In either case, an empty space is formed by the ribs 121, and the empty space acts as an insulating space.

The rib 121 may be formed to form a lattice shape in which a plurality of horizontal members and vertical members are orthogonal to each other, and the rib 121 serves to reinforce the strength of the inner case 120. Accordingly, the inner case 120 can sufficiently withstand an increase in internal pressure caused by a phase change of the PCM filled therein and the volume expansion.

The outer case 140 serves to protect the inner vacuum insulator 130 from impact as a portion constituting the outermost portion of the heat storage device 100.

As described above, according to the present invention, a heat storage device having a new structure different from the prior art is provided.

Since the heat storage device has improved heat exchange performance and heat storage performance as described above, it absorbs a large amount of heat from the cooling water when installed in the cooling water line of the vehicle and can be stored for a long time, and when necessary, a large amount of heat is transferred to the cooling water. Can be released. Therefore, there is an effect that the cold start performance and the immediate heating performance are further improved.

As described above, the present invention has been described with reference to the embodiment shown in the drawings, but this is only illustrative, and various modifications and equivalent other embodiments are available from those of ordinary skill in the field to which the technology pertains. You will understand that it is possible. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

100: heat storage 110: heat exchanger
111: plate tube 120: inner case
125: inner case cover 126: inlet pipe
127: outlet pipe 130: vacuum insulation
135: vacuum insulation cover 140: outer case
145: outer case cover

Claims (18)

A heat exchanger through which cooling water passes;
An inner case accommodating the heat exchanger;
A heat storage material filled between the heat exchanger and the inner case;
An outer case accommodating the inner case;
Including an insulating space formed between the inner case and the outer case,
The heat exchanger is stacked in a state in which plate-shaped tubes composed of an upper plate and a lower plate are in communication with each other, and a connection portion including an inlet and an outlet is protruded from the upper plate and the lower plate of the plate-shaped tube, and the upper plate-shaped tube and the lower plate-shaped tube are the connecting portions. Are stacked in a structure that is interconnected,
An female flange having a pipe insertion hole connected to an inlet and an outlet is mounted on the upper surface of the heat exchanger, and a male flange having an inlet pipe and an outlet pipe is formed on the bottom surface of the inner case cover covering the upper opening of the inner case. , The female flange and the male flange are coupled to each other when assembling the inner case cover to form a cooling water inlet path and a discharge path.
The method according to claim 1,
A vehicle heat storage device, characterized in that a cooling fin is formed between the plate-shaped tubes. delete The method according to claim 1,
A vehicle heat accumulator, characterized in that the plate-shaped tube has a baffle that blocks the inlet and the outlet. The method of claim 4,
A vehicle heat storage device, characterized in that a plurality of circular beads colliding with the flow of coolant are formed in spaces on both sides of the plate-shaped tube divided by baffles. The method of claim 4,
A vehicle heat storage device, characterized in that a curved bead for smoothly guiding the flow of coolant is formed at a connection portion of the space on both sides of the plate-shaped tube divided by a baffle. The method according to claim 1,
A vehicle heat accumulator, characterized in that fixing grooves into which tabs and tabs are inserted, respectively, are formed on an upper plate and a lower plate of the plate-shaped tube. delete The method according to claim 1,
An O-ring is installed between the contact surfaces of the female flange and the male flange, and between the contact surfaces of the inlet pipe and the outlet pipe and the corresponding pipe insertion hole. The method according to claim 1,
The inlet pipe and the outlet pipe are disposed adjacent to each other to reduce the non-insulating area due to the inlet pipe and the outlet pipe in the vacuum insulating material cover surrounding the inner case cover. The method according to claim 1,
The heat storage material is a vehicle heat accumulator, characterized in that the PCM (Phase change material; phase change material). The method according to claim 1,
A heat accumulator for a vehicle, characterized in that a vacuum insulating material surrounding the inner case is installed in an insulating space between the inner case and the outer case. The method of claim 12,
A vehicle heat accumulator, characterized in that a rib contacting the inner circumferential surface of the vacuum insulating material is protruded on the outer circumferential surface of the inner case. The method according to claim 1,
A vehicle heat accumulator, characterized in that a rib contacting the inner circumferential surface of the outer case is protruded on the outer circumferential surface of the inner case. The method according to any one of claims 13 or 14,
The rib is a vehicle heat storage device, characterized in that a plurality of horizontal members and vertical members cross to form a grid shape. The method according to claim 1,
A vehicle heat storage device, characterized in that an injection hole for injecting a heat storage material is formed through the bottom of the inner case. The method of claim 16,
The injection port is a vehicle heat storage device, characterized in that after the injection of the heat storage material is completed, the screw is fastened and sealed. The method according to claim 1,
A vehicle heat accumulator, characterized in that a pipe hole through which the inlet pipe and the outlet pipe respectively pass through the outer case cover covering the upper opening of the outer case.

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