JP5116651B2 - Heat storage device - Google Patents

Description

  The present invention relates to a heat storage device.

  Vehicles such as automobiles are equipped with a heat storage device that stores a high-temperature medium in advance for the purpose of reducing fuel consumption associated with engine warm-up operation.

As a conventional heat storage device, a vertically long and cylindrical double vacuum heat insulating structure is known (see Patent Documents 1 and 2). In such a heat storage device, a rectifying plate is provided at a predetermined position in order to prevent mixing of the high-temperature medium stored inside and the low-temperature medium flowing into the inside.
JP 2003-80929 A JP 2000-73764 A

  However, the vertically long and cylindrical heat storage device disclosed in Patent Document 1 or 2 has a problem that it cannot be arranged as it is when a sufficient on-vehicle space cannot be secured in the vehicle vertical direction.

  In order to solve this problem, for example, it is conceivable to reduce the shape of the heat storage device in the vertical direction of the vehicle, but if this is done, it becomes easy for stagnation of a high-temperature medium to occur on the outer peripheral side of the device and the heat storage performance decreases. Resulting in. A stagnation is an area where the medium is accumulated without flowing.

  The present invention has been made in view of such a technical problem, and provides a heat storage device that can be mounted on a vehicle even when there is no sufficient vehicle mounting space in the vertical direction of the vehicle and prevents deterioration in heat storage performance. Objective.

The invention according to claim 1 includes a storage portion that is horizontally long when the medium is kept warm and the upper surface and the lower surface are arranged in the vertical direction of the vehicle, and a medium inlet that allows the medium to flow into the storage portion. A heat storage device comprising: a medium introduction section; a medium outlet section having a medium outlet for flowing out the medium from the storage section; and a rectifying plate provided between the medium inlet and the medium outlet, The medium inlet is provided at a position opposite to the medium outlet across a substantially longitudinal center of the reservoir , and the rectifying plate is disposed from the upper surface to the lower surface of the reservoir, All or part of the plate is provided to be inclined with respect to the inflow direction of the medium at the medium inlet.

  Invention of Claim 2 is the thermal storage apparatus of Claim 1, Comprising: The said medium introducing | transducing part and the said medium derivation | leading-out part are the longitudinal direction of the said storage part from the approximate center of the upper part or the lower part of the said storage part. It is provided so as to pass through a remote insertion position, and the medium outlet is further provided to be bent from the insertion position toward the longitudinal direction opposite to the insertion position inside the storage part. It is a feature.

Invention of Claim 3 is a thermal storage apparatus of Claim 1, Comprising: The said medium introducing | transducing part has the insertion position separated in the longitudinal direction of the said storage part from the approximate center of the upper part or the lower part of the said storage part. The medium lead-out part is provided so as to be inserted through an insertion position separated on the opposite side across the insertion position and the approximate center of the upper part or the lower part of the storage part. is there.
According to a fourth aspect of the present invention, there is provided a storage portion that is horizontally long when the medium is kept warm and the upper surface and the lower surface are arranged in the vertical direction of the vehicle, and a medium inlet that allows the medium to flow into the storage portion. A heat storage device comprising: a medium introduction section; a medium outlet section having a medium outlet for flowing out the medium from the storage section; and a rectifying plate provided between the medium inlet and the medium outlet, The medium inlet is provided at a position opposite to the medium outlet across a substantially longitudinal center of the reservoir, and the rectifying plate is disposed from the upper surface to the lower surface of the reservoir, All or a part of the plate is provided so as to be inclined with respect to the inflow direction of the medium at the medium inlet, and the medium introduction part and the medium lead-out part are formed from the approximate center of the upper part or the lower part of the storage part. Insert the insertion position separated in the longitudinal direction of Yo is provided, the medium deriving section further from the insertion position, characterized in that as provided to bend toward the longitudinal direction of the insertion position and the opposite side in the interior of the reservoir.

  According to the first aspect of the present invention, since the storage portion is a horizontally long type, the vehicle can be mounted even when a sufficient space cannot be secured in the vertical direction of the vehicle. In addition, the medium inlet is provided at a position opposite to the medium outlet across the approximate center in the longitudinal direction of the reservoir, and the rectifying plate is provided so that all or part of the current plate is inclined with respect to the medium inflow direction. Since the flow of the medium which prevents generation | occurrence | production of soot in the inside of a storage part is produced by this, the fall of heat storage performance can be prevented.

  According to the second aspect of the present invention, the medium introduction part and the medium lead-out part are provided so as to pass through the same insertion position, and the medium lead-out part is provided so as to be bent inside the storage part. The manufacturability of the device can be increased.

  According to the invention described in claim 3, the medium introduction part and the medium lead-out part are provided to be inserted through different insertion positions on the opposite side across the approximate center in the longitudinal direction of the storage part. Since the medium outlet can be arranged without a double tube structure, the layout of the entire apparatus can be improved.

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

(Device configuration)
FIG. 1 is a schematic perspective view of a heat storage device 1 according to an embodiment of the present invention. The heat storage device 1 shown in FIG. 1 includes an inner tank (reservoir) 11, an outer tank 12, an inlet pipe (medium inlet) 13, an outlet pipe (medium outlet) 14, and a current plate 15. The heat storage device 1 stores a medium flowing into the inner tank 11 from an inlet pipe 13 and supplies the stored medium from an outlet pipe 14 to an engine (not shown).

  Hereinafter, each component of the heat storage device 1 will be described.

  The inner tank 11 is a container that retains and stores a medium such as cooling water inside. The outer tank 12 is a container that encloses the inner tank 11 with a predetermined space from the inner tank 11. Since the predetermined space between the inner tank 11 and the outer tank 12 is substantially vacuum, the inside of the inner tank 11 is insulated from the outside air, and the medium stored in the same portion can be kept warm. The inner tank 11 and the outer tank 12 are preferably made of a metal material such as stainless steel having excellent corrosion resistance such as SUS304.

  Furthermore, the inner tank 11 and the outer tank 12 according to this embodiment are horizontally long and have a substantially rectangular parallelepiped shape. That is, the length L1 in the longitudinal direction (Y-axis direction) of the inner tank 11 is longer than the height H in the vertical direction (Z-axis direction). Since it has a horizontally long shape as described above, a low-temperature medium flowing into the same portion as a high-temperature medium stored in the inner tank 11 even when the vertical shape is reduced is separated. Sufficient area can be secured.

  The inlet pipe 13 is a pipe provided at its end with a medium inlet 13a through which the medium flowing in from an unillustrated engine coolant system flows into the inner tank 11. The outlet pipe 14 is a pipe provided at the end with a medium outlet 14a through which the medium stored in the inner tank 11 flows out to a cooling water system of an engine (not shown). The inlet pipe 13 and the outlet pipe 14 are made of, for example, a resin material. In addition, the inlet pipe 13 and the outlet pipe 14 have a double pipe structure in which the inlet pipe 13 is an outer pipe and the outlet pipe 14 is an inner pipe in the upper part of the heat storage device 1.

  Furthermore, the inlet pipe 13 according to the present embodiment is a pipe provided at an insertion position 11a that is separated from the approximate center of the upper or lower part (upper part in FIG. 1) of the heat storage device 1 in the longitudinal direction (Y-axis negative direction in FIG. 1). It is provided so as to be inserted through the mounting hole 16.

  The advantage of arranging the inlet pipe 13 in this way will be described in comparison with the conventional arrangement method. According to the conventional arrangement method, the inlet pipe 13 is generally provided so as to pass through the approximate center of the upper part or the lower part of the heat storage device 1. However, if the conventional arrangement method is applied to the heat storage device 1 according to the present embodiment, stagnation occurs at both ends in the longitudinal direction of the inner tank 11 (in the vicinity of the regions A and B in FIG. 1). When the stagnation occurs, the medium in the vicinity of the stagnation is not discharged from the heat storage device 1, which is not preferable because the heat storage performance of the heat storage device 1 is deteriorated. On the other hand, according to the arrangement method of the inlet pipe 13 according to the present embodiment, the inlet pipe 13 can prevent the occurrence of stagnation at one end in the longitudinal direction of the inner tank 11 (in the vicinity of the region A in FIG. 1). The heat storage device 1 is provided so as to be inserted through an insertion position 11a that is separated from the approximate center at the top. Therefore, although the stagnation may occur at the end opposite to the insertion position 11a (in the vicinity of the region B in FIG. 1), the crease can be reduced as compared with the conventional arrangement method.

  The outlet pipe 14 is provided so as to bend from the insertion position 11a toward the longitudinal direction (Y-axis positive direction in FIG. 1) on the opposite side to the insertion position 11a inside the inner tank 11.

  The advantage of arranging the outlet pipe 14 in this way will be described in comparison with the conventional arrangement method. According to the conventional arrangement method, the outlet pipe 14 is generally provided linearly in a substantially vertical direction like the inlet pipe 13 without being bent. However, when the conventional arrangement method is applied to the heat storage device 1 according to the present embodiment, the height in the vertical direction (Z-axis) is short, so that it still stagnates at one end in the longitudinal direction of the inner tank 11 (in the vicinity of the region B in FIG. 1). Will occur. If it does so, it will reduce the thermal storage performance of the thermal storage apparatus 1, and is not preferable. On the other hand, according to the arrangement method of the outlet pipe 14 according to the present embodiment, the medium inlet 13a is provided at a position opposite to the medium inlet 14a with the approximate center in the longitudinal direction of the reservoir 11 interposed therebetween. Therefore, it is possible to prevent the stagnation from occurring in one end portion in the longitudinal direction of the inner tank 11 (in the vicinity of the region B in FIG. 1) as compared with the conventional arrangement method.

  The rectifying plate 15 is a thin plate provided between the medium inlet 13a and the medium outlet 14a and having a large number of holes 15a on the surface thereof. This baffle plate 15 uses a large number of holes 15a provided on the surface to adjust the flow of the medium flowing from the medium inlet 13a toward the medium outlet 14a to be substantially uniform. In addition, a fitting hole 15b for fitting the outlet pipe 14 is provided at substantially the center of the rectifying plate 15, and the rectifying plate 15 is fitted to the outlet pipe 14 in the fitting hole 15b. The rectifying plate 15 is preferably made of a material having higher electronegativity than the material of the inner tank 11 (such as aluminum when the inner tank 11 is stainless steel). This is to prevent corrosion of the inner tank 11.

  By providing this baffle plate 15, it is possible to prevent the medium from flowing in a shortest path from the medium inlet 13 a to the medium outlet 14 a. Further, when a high-temperature medium is stored in the region on the medium outlet 14a side of the rectifying plate 15 and a low-temperature medium flows into the region on the medium inlet 13a side of the rectifying plate 15, the high-temperature region and the low-temperature medium The high temperature medium can be preferentially allowed to flow out by separating from the above-mentioned area. In this way, it is possible to prevent a decrease in the heat storage performance of the heat storage device 1.

  Furthermore, in the rectifying plate 15 according to the present embodiment, all or a part of the rectifying plate 15 is inclined (a direction that is neither vertical nor parallel) with respect to the medium introduction direction (arrow direction in the drawing) at the medium inlet 13a. Is provided.

  The advantage of arranging the current plate 15 in this way will be described in comparison with a conventional arrangement method. According to the conventional arrangement method, the rectifying plate 15 is generally provided perpendicular to the medium introduction direction at the medium inlet 13a (the arrow direction in the vicinity of the medium inlet 13a in the figure). However, even if the conventional arrangement method is applied to the heat storage device 1 according to the present embodiment, it is not possible to prevent the occurrence of stagnation in the upper part of the inner tank 11 in the longitudinal direction (around the region B1 in FIG. 1). This is because there is no medium flow toward the periphery of the area B1. On the other hand, according to the arrangement method of the rectifying plate 15 according to the present embodiment, it is possible to create a medium flow toward the periphery of the region B1 where stagnation can occur in the inner tank 11 and to prevent stagnation (for details). Will be described in each specific example described later). That is, the arrangement considers the flow distribution of the medium flowing inside the inner tank 11 as compared with the conventional arrangement method.

  In addition, about the arrangement position of the baffle plate 15, you may paraphrase as follows. For example, the arrangement position is such that a plane constituted by a predetermined one side of the current plate 15 and the opposite side of the current plate is inclined with respect to the medium introduction direction at the medium inlet 13a. Further, for example, a length H1 in the vertical direction (Z-axis direction) from the pipe mounting hole 16 to a predetermined side of the rectifying plate 15 and a length H2 in the vertical direction (Z-axis direction) from the pipe mounting hole 16 to the opposite side thereof Are different arrangement positions.

(First specific example)
Drawing 2 is a figure showing the example of heat storage device 1 (the 1). FIG. 2 shows a view of the heat storage device 1 of FIG. 1 as seen from the side (X-axis positive direction).

  In FIG. 2, the inlet pipe 13 is provided so as to pass through a pipe attachment hole 16 provided at an insertion position 11 a that is separated from the approximate center of the upper portion of the heat storage device 1 in the longitudinal direction. The outlet pipe 14 is provided so as to be bent substantially perpendicularly from the insertion position 11a toward the longitudinal direction (Y-axis positive direction) opposite to the insertion position 11a inside the inner tank 11. Further, the rectifying plate 15 is provided so that the inclination is different between the upper side and the lower side of the outlet pipe 14. Specifically, the rectifying plate 15 is disposed so as to be inclined at a predetermined angle in the substantially vertical direction on the upper side and on the lower side as compared with the upper side.

  With this configuration, the lower rectifying plate 15 functions as a rectifying means for adjusting the flow of the medium flowing in from the medium inlet 13a so as to be substantially uniform, and in addition, the lower direction of the inner tank 11 of the medium flowing in from the medium inlet 13a. It also functions as a circulating flow generating means for converting the flow into the upper tank along the inner wall of the inner tank 11 to create a circulating flow inside the inner tank 11. The upper rectifying plate 15 functions as a rectifying means for adjusting the flow of the medium produced by the lower rectifying plate 15 to be substantially uniform. Then, the rectifying plate 15 on the upper side generates a medium flow toward the periphery of the region B1. Thereby, the fall of the thermal storage performance of the thermal storage apparatus 1 can be prevented, preventing generation | occurrence | production of the stagnation in area | region B1 periphery.

(Second specific example)
Drawing 3 is a figure showing the example of heat storage device 1 (the 2). FIG. 3 shows a view of the heat storage device 1 of FIG. 1 as viewed from the side (X-axis positive direction).

  In FIG. 3, the inlet pipe 13 is provided so as to pass through a pipe attachment hole 16 provided at an insertion position 11 a that is separated from the approximate center of the upper part of the heat storage device 1 in the longitudinal direction. Further, the outlet pipe 14 is provided so as to be bent from the insertion position 11 a toward the longitudinal direction (Y-axis positive direction) opposite to the insertion position 11 a and the lower side of the inner tank 11 inside the inner tank 11. Yes. Furthermore, the rectifying plate 15 is disposed so as to be substantially perpendicular to the piping direction of the outlet pipe 14.

  With this configuration, the lower rectifying plate 15 functions in the same manner as in the first specific example. The upper rectifying plate 15 also functions in the same manner as in the first specific example. Thereby, the fall of the thermal storage performance of the thermal storage apparatus 1 can be prevented, preventing generation | occurrence | production of the stagnation in area | region B1 periphery.

(Third example)
FIG. 4 is a diagram showing a specific example of the heat storage device 1 (No. 3). FIG. 4 shows a view of the heat storage device 1 of FIG. 1 as viewed from the side (X-axis positive direction).

  In FIG. 4, the inlet pipe 13 is provided so as to pass through a pipe attachment hole 16 provided at an insertion position 11 a that is separated from the approximate center of the lower part of the heat storage device 1 in the longitudinal direction. The outlet pipe 14 is provided so as to be bent from the insertion position 11a toward the longitudinal direction (Y-axis negative direction) opposite to the insertion position 11a and the upper side of the inner tank 11 inside the inner tank 11. Yes. Furthermore, the rectifying plate 15 is disposed so as to be substantially perpendicular to the piping direction of the outlet pipe 14.

  With this configuration, the rectifying plate 15 on the upper side functions as a rectifying unit that adjusts the flow of the medium flowing in from the medium inlet 13a to be substantially uniform, and in addition, the upper portion of the inner tank 11 of the medium flowing in from the medium inlet 13a. It also functions as a circulating flow generating means for converting the flow in the direction into the flow in the lower direction along the inner wall of the inner tank 11 to create a circulating flow inside the inner tank 11. The lower rectifying plate 15 functions as a rectifying means for adjusting the flow of the medium produced by the upper rectifying plate 15 to be substantially uniform. Then, the lower rectifying plate 15 generates a medium flow toward the periphery of the region B1. Thereby, the fall of the thermal storage performance of the thermal storage apparatus 1 can be prevented, preventing generation | occurrence | production of the stagnation in area | region B1 periphery.

(Fourth specific example)
FIG. 5 is a diagram showing a specific example of the heat storage device 1 (part 4). FIG. 5 shows a view of the heat storage device 1 of FIG. 1 as viewed from the side (X-axis positive direction).

  In FIG. 5, the inlet pipe 13 is provided so as to extend substantially vertically through a pipe attachment hole 16 provided at an insertion position 11 a that is separated from the approximate center of the upper part of the heat storage device 1 in the longitudinal direction. Further, the outlet pipe 14 is provided so as to extend substantially vertically through a pipe mounting hole 17 provided at an insertion position 11b that is separated on the opposite side across the insertion position 11a and the approximate center of the upper portion of the heat storage device 1. Yes. That is, the medium inlet 13a and the medium outlet 14a are provided at different positions on the opposite side across the substantial center of the inner tank 11 in the longitudinal direction. Further, the rectifying plate 15 is provided to be inclined with respect to the medium introduction direction at the medium inlet 13a.

  With this configuration, the lower rectifying plate 15 functions in the same manner as in the first specific example. The upper rectifying plate 15 also functions in the same manner as in the first specific example. Thereby, the fall of the thermal storage performance of the thermal storage apparatus 1 can be prevented, preventing generation | occurrence | production of the stagnation in area | region B1 periphery. In addition, since the heat storage device 1 according to the fourth specific example is provided with two pipe mounting holes, that is, the pipe mounting hole 16 and the pipe mounting hole 17, in terms of manufacturability of the heat storage device 1, a double pipe structure is used. Although inferior to the heat storage device 1 according to the first specific example, it is preferable in that it is not necessary to provide the bent outlet pipe 14 like the heat storage devices 1 according to the first to third specific examples. It is. Moreover, since the inlet pipe 13 and the outlet pipe 14 can be arranged without using a double pipe structure like the heat storage device 1 according to the first to third specific examples, the layout of the entire device is improved. It is suitable. Furthermore, since the length of the outlet pipe 14 can be made shorter than when the outlet pipe 14 is bent, the heat release that occurs until the high-temperature medium is supplied from the outlet pipe 14 to the engine (not shown) is suppressed. This is also preferable in that the state can be maintained and supplied to an engine (not shown).

  As mentioned above, although each specific example has been described, the heat storage device 1 according to the present embodiment can be mounted on the vehicle even when a sufficient space cannot be secured in the vehicle vertical direction because the inner tank 11 is a horizontally long type. . Further, the outlet pipe 14 provided to be bent inside the inner tank 11 and the current plate 15 provided so that all or a part thereof is inclined with respect to the inflow direction of the medium are provided inside the inner tank 11. Since the flow of the medium that prevents the generation of soot is created, it is possible to prevent the heat storage performance from being deteriorated.

  The embodiment of the present invention has been described above, but the above embodiment shows an application example of the present invention, and is not intended to limit the technical scope of the present invention to the specific configuration of the above embodiment.

  For example, in the above description, the case where the inner tank 11 has a horizontally long shape and a substantially rectangular parallelepiped shape is shown as an example, but the present invention is not limited to this case. For example, the shape of the lower side of the inner tank 11 may be changed as appropriate according to the in-vehicle space, such as a shape provided with an inclination along the outlet pipe 14.

  Further, for example, in the description of each of the above specific examples, when the insertion position 11a is provided in the upper part of the inner tank 11 (see FIGS. 2, 3, and 5 (in addition, the insertion position 11b in FIG. 5)) or the inner side Although the case where the insertion position 11a is provided in the lower part of the tank 11 (see FIG. 4) has been described as an example, the insertion positions 11a and 11b may be provided in either the upper part or the lower part of the inner tank 11.

It is a schematic perspective view of the heat storage apparatus which concerns on one Embodiment of this invention. It is a figure which shows the specific example of a thermal storage apparatus (the 1). It is a figure which shows the specific example of a thermal storage apparatus (the 2). It is a figure which shows the specific example of a thermal storage apparatus (the 3). It is a figure which shows the specific example of a thermal storage apparatus (the 4).

Explanation of symbols

1 heat storage device 11 inner tank (storage part)
12 Outer tank 13 Inlet pipe (medium inlet)
13a Medium inlet 14 Outlet pipe (medium outlet)
14a Medium outlet 15 Current plate 15a Hole 15b Fitting hole 16 Pipe mounting hole

Claims (4)

A storage part (11) that retains the medium in a warm state and becomes a horizontally long shape when the upper surface and the lower surface are arranged in the vertical direction of the vehicle ;
A medium introduction part (13) provided with a medium inlet (13a) through which the medium flows into the storage part (11);
A medium outlet (14) having a medium outlet (14a) for flowing the medium out of the reservoir (11);
A baffle plate (15) provided between the medium inlet (13a) and the medium outlet (14a);
A heat storage device (1) having
The medium inlet (13a) is provided at a position opposite to the medium outlet (14a) across the approximate center in the longitudinal direction of the reservoir (11),
The rectifying plate (15) is disposed from the upper surface to the lower surface of the reservoir (11), and all or part of the rectifying plate (15) is in the medium inflow direction in the medium inlet (13a). A heat storage device characterized in that it is provided so as to be inclined. The heat storage device according to claim 1,
The medium introduction part (13) and the medium lead-out part (14) are inserted through an insertion position (11a) separated from the approximate center of the upper part or the lower part of the storage part (11) in the longitudinal direction of the storage part (11). Provided to
The medium lead-out portion (14) is further provided to bend from the insertion position (11a) toward the longitudinal direction opposite to the insertion position (11a) inside the storage portion (11). A heat storage device characterized by this. The heat storage device according to claim 1,
The medium introduction part (13) is provided so as to pass through an insertion position (11a) that is separated from the approximate center of the upper part or the lower part of the storage part (11) in the longitudinal direction of the storage part (11),
The medium lead-out part (14) is provided so as to be inserted through the insertion position (11b) which is separated on the opposite side across the approximate center between the insertion position (11a) and the upper or lower part of the storage part (11). A heat storage device characterized by this. A storage part (11) that retains the medium in a warm state and becomes a horizontally long shape when the upper surface and the lower surface are arranged in the vertical direction of the vehicle;
  A medium introduction part (13) provided with a medium inlet (13a) through which the medium flows into the storage part (11);
  A medium outlet (14) having a medium outlet (14a) for flowing the medium out of the reservoir (11);
  A baffle plate (15) provided between the medium inlet (13a) and the medium outlet (14a);
  A heat storage device (1) having
  The medium inlet (13a) is provided at a position opposite to the medium outlet (14a) across the approximate center in the longitudinal direction of the reservoir (11),
  The rectifying plate (15) is disposed from the upper surface to the lower surface of the reservoir (11), and all or part of the rectifying plate (15) is in the medium inflow direction in the medium inlet (13a). It is provided to be diagonal to
  The medium introduction part (13) and the medium lead-out part (14) are inserted through an insertion position (11a) separated from the approximate center of the upper part or the lower part of the storage part (11) in the longitudinal direction of the storage part (11). Provided to
  The medium lead-out portion (14) is further provided to bend from the insertion position (11a) toward the longitudinal direction opposite to the insertion position (11a) inside the storage portion (11). A heat storage device characterized by this.

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