Storage tank

Abstract

The storage tank according to the present disclosure is a storage tank for storing cooling water for a vehicle, and is provided with: a substantially cylindrical gas-liquid separation unit; an inlet which is provided in a side surface of the gas-liquid separation unit and through which cooling water flows into the gas-liquid separation unit; and an outlet which is provided in the bottom surface of the gas-liquid separation unit and through which the cooling water flows out from the inside of the gas-liquid separation unit. A plurality of internal spaces are formed in the gas-liquid separation unit by providing partitions inside the gas-liquid separation unit so as to divide the cooling water flowing in from the inflow port, and the center position of the outflow port is offset from the center position of the swirling flow of the cooling water generated in each of the internal spaces.

Description

Technical Field

[0001] The present disclosure relates to a storage tank. Background Art

[0002] In a circulation path of cooling water for cooling an internal combustion engine of a vehicle, a storage tank for temporarily storing the cooling water is attached to a radiator that cools the cooling water heated by the internal combustion engine. If the flow rate of the cooling water is increased to improve the cooling performance, bubbles generated in the circulation path may flow into the storage tank or bubbles may be generated in the storage tank. If such bubbles circulate in the circulation path as they are, the cooling performance will be reduced. Therefore, in order to improve the cooling performance, a technique for separating the cooling water and bubbles in the storage tank has been developed.

[0003] For example, Japanese Unexamined Patent Application Publication No. 2021-169815 discloses a storage tank capable of generating and removing bubbles. In the storage tank disclosed in Japanese Unexamined Patent Application Publication No. 2021-169815, a protrusion formed so as to extend along the axis from the bottom wall portion of the gas-liquid separation portion is provided inside the gas-liquid separation portion. In the storage tank disclosed in Japanese Unexamined Patent Application Publication No. 2021-169815, a swirling flow is generated inside the gas-liquid separation portion to centrifugally separate the bubbles. Summary of the Utility Model

[0004] In the storage tank disclosed in Japanese Unexamined Patent Application Publication No. 2021-169815, if the flow rate is increased to improve the cooling performance, the flow rate becomes faster from the inside to the outside of the swirling flow. Therefore, sometimes the bottom of the swirling flow contacts the front end portion of the protrusion and the swirling flow becomes disordered to generate bubbles. To suppress this situation, it is effective to increase the capacity of the storage tank and slow down the flow rate, but there are also limitations in the space inside the vehicle. Thus, there is room for improvement in the improvement of the cooling performance of the storage tank disclosed in Japanese Unexamined Patent Application Publication No. 2021-169815.

[0005] The present disclosure has been made in view of such circumstances, and provides a storage tank capable of improving the cooling performance.

[0006] The storage tank according to the present disclosure is a storage tank for storing the cooling water of a vehicle, and includes:

[0007] a substantially cylindrical gas-liquid separation portion;

[0008] an inlet provided on a side surface of the gas-liquid separation portion for allowing the cooling water to flow into the inside of the gas-liquid separation portion; and

[0009] an outlet provided on a bottom surface of the gas-liquid separation portion for allowing the cooling water to flow out from the inside of the gas-liquid separation portion,

[0010] A partition part is arranged inside the gas-liquid separation part in a manner of dividing the cooling water flowing in from the inflow port, and a plurality of internal spaces are formed in the gas-liquid separation part.

[0011] The central position of the outflow port is a position deviated from the central position of the swirling flow of the cooling water generated from each internal space.

[0012] In the storage tank related to the present disclosure, the cooling water from the inflow port is divided, so a swirling flow can be generated while ensuring an appropriate flow rate, and bubbles can be separated in the gas-liquid separation part. Since the central position of the outflow port is deviated from the central position of the swirling flow, the separated bubbles can be suppressed from flowing out of the outflow port, so the cooling performance can be improved.

[0013] Alternatively, the partition part may be arranged in a manner of dividing the cooling water flowing out from the outflow port. According to such a configuration, the partition part is arranged directly above the outflow port, so the central position of the outflow port becomes a position deviated from the central position of the swirling flow, and the separated bubbles can be suppressed from flowing out of the outflow port. Therefore, the cooling performance can be improved.

[0014] In addition, alternatively, the partition part may be arranged in a manner of equally dividing the cooling water flowing out from the outflow port. According to such a configuration, the sizes of the outflow ports for the respective internal spaces of the gas-liquid separation part are equal, so the separated bubbles can be further suppressed from flowing out of the outflow port. Therefore, the cooling performance can be improved.

[0015] Furthermore, alternatively, the partition part may be arranged in a manner of equally dividing the cooling water flowing out from the inflow port, and the central position of the outflow port is the same as the central position of the gas-liquid separation part. According to such a configuration, the cooling water from the inflow port flows equally into the respective internal spaces of the gas-liquid separation part, so a swirling flow can be generated while ensuring an appropriate flow rate, and bubbles can be separated in the gas-liquid separation part. The sizes of the outflow ports for the respective internal spaces of the gas-liquid separation part are equal, so the separated bubbles can be further suppressed from flowing out of the outflow port. Therefore, the cooling performance can be improved.

[0016] Alternatively, a baffle plate protruding upward from the bottom surface of the gas-liquid separation part may be provided between the inflow port and the outflow port. According to such a configuration, the cooling water flowing into the gas-liquid separation part from the inflow port can be suppressed from flowing out of the outflow port as it is. Therefore, the cooling performance can be improved.

[0017] According to the present disclosure, a storage tank capable of improving the cooling performance can be provided. Brief Description of the Drawings

[0018] The features, advantages, and technical and industrial significance of the exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings. In the drawings, like reference numerals denote like elements. In the drawings:

[0019] Figure 1 is the top view (xy top view) of the storage tank related to Embodiment 1;

[0020] Figure 2 is the cross-sectional view (xz cross-sectional view) of the storage tank related to Embodiment 1;

[0021] Figure 3 is the cross-sectional view (yz cross-sectional view) of the storage tank related to Embodiment 1;

[0022] Figure 4 is the top view (xy top view) of the storage tank related to the modification;

[0023] Figure 5 is the cross-sectional view (yz cross-sectional view) of the storage tank related to Embodiment 2; and

[0024] Figure 6 is the cross-sectional view (yz cross-sectional view) of the storage tank related to Embodiment 2. Detailed Embodiments

[0025] Hereinafter, the present disclosure will be described by way of embodiments of the invention. However, the invention described in the claims is not limited to the following embodiments. In addition, the configurations described in the embodiments are not all essential as means for solving the problems. For clarity of explanation, the following description and drawings are appropriately omitted and simplified. In each drawing, the same reference numerals are assigned to the same elements, and repeated explanations are omitted as needed. In addition, the right-handed xyz orthogonal coordinates shown in the drawings are only for convenience in explaining the positional relationship of the constituent elements. Generally, the positive direction of the z-axis is vertically upward, and the xy plane is the horizontal plane.

[0026] Embodiment 1

[0027] Configuration of the Storage Tank

[0028] First, with reference to Figures 1 to 3 , the storage tank related to Embodiment 1 will be described. Figure 1 is the top view (xy top view) of the storage tank related to Embodiment 1. Figure 2 is the cross-sectional view (xz cross-sectional view) of the storage tank related to Embodiment 1. Figure 3 is the cross-sectional view (yz cross-sectional view) of the storage tank related to Embodiment 1.

[0029] For Figures 1 to 3A schematic description of the storage tank 10 shown is provided. The storage tank 10 is used in a cooling system mounted on a vehicle. The cooling system cools by circulating cooling water relative to various parts of the vehicle to be cooled (such as an internal combustion engine and auxiliary machines). In the cooling system, the cooling water pumped by a water pump is supplied to the object to be cooled to cool it. The cooling water that has become high temperature through the object to be cooled is cooled in a radiator and then returns to the water pump and is pumped again from the water pump.

[0030] The storage tank 10 is provided at an intermediate position in the path of the cooling water circulation in such a cooling system, for example, at a position upstream of the water pump. The storage tank 10 stores the cooling water used to cool the cooling object of the vehicle. In Figures 1 to 3 the example shown, the shaded area indicates the cooling water.

[0031] Next, each component of the storage tank 10 will be described. As Figure 1 shown, the storage tank 10 includes a gas-liquid separation part 11, an inlet 12, an outlet 13, and a partition part 14. A hose (not shown), a radiator (not shown), a water pump (not shown), and a cooling object (not shown) are connected between the inlet 12 and the outlet 13 to form a flow path for the circulation of the cooling water. Hereinafter, the flow path (not shown) of the cooling water circulation will be referred to as the circulation flow path.

[0032] The gas-liquid separation part 11 will be described. As Figures 1 to 3 shown, the gas-liquid separation part 11 is substantially cylindrical. The gas-liquid separation part 11 is a container for temporarily storing the supplied cooling water and separating the bubbles contained in the cooling water.

[0033] In Figure 1 the example shown, the gas-liquid separation part 11 has an elliptical shape when observed in the xy plane. However, it is not limited to this. The gas-liquid separation part 11 may have a closed shape such as a circle. That is, a substantially cylinder refers to a column formed by two substantially circular parallel planes including not only a perfect circle but also an ellipse or an oblong, etc., and a side surface connecting these two planes. The method of separating bubbles in the gas-liquid separation part 11 will be described later.

[0034] The inlet 12 will be described. As Figure 1 , Figure 3 shown, the inlet 12 is provided on the side surface of the gas-liquid separation part to allow the cooling water to flow into the inside of the gas-liquid separation part 11. As Figure 1 , Figure 3 shown, the inlet 12 represents an opening provided on the side surface of the gas-liquid separation part. An inflow connection port C12 is provided in the storage tank 10, and a hose is connected to the inflow connection port C12. A part of the cooling water that does not pass through the radiator (not shown) flows into the gas-liquid separation part 11 through the inlet 12.

[0035] The convection outlet 13 will be described. As Figures 1 to 3 shown, the outlet 13 is provided on the bottom surface of the gas-liquid separation section, allowing the cooling water to flow out from the inside of the gas-liquid separation section. As Figure 2 , Figure 3 shown, the outlet 13 represents an opening provided on the bottom surface of the gas-liquid separation section. An outflow connection port C13 is provided in the storage tank 10, and a hose is connected to the outflow connection port C13. When a water pump (not shown) operates, the cooling water stored in the gas-liquid separation section 11 is supplied to the object to be cooled through the outlet 13.

[0036] The partition section 14 will be described. As Figure 1 , Figure 2 shown, the partition section 14 is provided inside the gas-liquid separation section 11 in a manner that divides the cooling water flowing in from the inlet 12. As Figure 1 shown, the partition section 14 has a surface parallel to the y-axis and is provided inside the gas-liquid separation section 11 from the side surface of the gas-liquid separation section 11 having the inlet 12 to the other side surface of the gas-liquid separation section 11.

[0037] More specifically, in the example shown in Figure 1 , Figure 2 shown, the partition section 14 is provided in a manner that equally divides the cooling water flowing in from the inlet 12. In the example shown in Figure 1 , Figure 2 shown, two internal spaces S1 and S2 are formed in the gas-liquid separation section 11 by the partition section 14. The volumes of the cooling water flowing into the internal space S1 and the internal space S2 are equal.

[0038] In the example shown in Figures 1 to 3 shown, the partition section 14 is provided in a manner that equally divides the cooling water flowing out from the outlet 13. More specifically, the partition section 14 is provided directly above the outlet 13, and the center position of the outlet 13 is the same as the center of the gas-liquid separation section.

[0039] Swirling flow

[0040] Next, referring to Figures 1 to 3 , the swirling flow generated in the gas-liquid separation section 11 will be described. In Figures 1 to 3 , the swirling flows V1 and V2 generated in the gas-liquid separation section 11 are schematically shown using arrows. The swirling flows V1 and V2 are generated when the flow rate of the cooling water is increased to improve the cooling performance. As Figures 1 to 3 shown, in the swirling flows V1 and V2, the flow velocity becomes faster from the inside to the outside of the swirling flow, so the liquid level height becomes higher from the inside to the outside of the swirling flow. In other words, in the swirling flows V1 and V2, they have a shape with a central depression. In Figures 1 to 3In the example shown, the centers of the swirling flows V1 and V2 change linearly, but they can also be in the shape of a mortar with a gentle inclination.

[0041] In the swirling flows V1 and V2, the bubbles contained in the cooling water are centrifugally separated. The bubbles contained in the cooling water are, for example, the bubbles contained in the cooling water that could not be centrifugally separated in the gas-liquid separation section 11 and are supplied from the outlet 13 and returned to the inlet 12 as they are. As another example, the bubbles contained in the cooling water are the bubbles generated in the circulation path.

[0042] Refer to Figures 1 to 3 , and the centrifugal separation of the bubbles A in the swirling flows V1 and V2 will be described more specifically. Even if the flow rate of the cooling water is increased to improve the cooling performance, since as Figure 1 shown, the separation section 14 is provided in the gas-liquid separation section 11, the cooling water from the inlet 12 will be equally divided. As a result, the cooling water flows equally into the internal spaces S1 and S2. Thus, in the internal spaces S1 and S2, the cooling water flows along the wall surface of the separation section 14, so that the swirling flows V1 and V2 are generated while ensuring an appropriate flow rate.

[0043] By forming Figure 2 , Figure 3 the swirling flows V1 and V2 as shown in the internal spaces S1 and S2, the cooling water in the internal spaces S1 and S2 flows toward the outside of the swirling flows V1 and V2, that is, toward the side surfaces of the gas-liquid separation section 11 due to the centrifugal force. On the other hand, the bubbles A contained in the cooling water are lighter than the cooling water, so they gather near the center of the swirling flows V1 and V2 of the cooling water. The bubbles A gather in the space above the gas-liquid separation section 11 by reaching the liquid surfaces WS1 and WS2 of the cooling water. Through such a process, the bubbles contained in the cooling water can be separated.

[0044] In other words, although the flow rate of the cooling water flowing into the storage tank increases, due to the separation section 14, the cooling water is divided and flows into each internal space, so an appropriate flow rate can be ensured, and the bubbles can be separated without changing the capacity of the storage tank. In other words, in the storage tank 10, compared with the case where the separation section 14 is not provided, the flow rate relative to each internal space can be reduced, so the bubbles can be separated.

[0045] In the case where the separation section 14 is not provided in the storage tank, in order to separate the bubbles in the cooling water, it is necessary to increase the tank capacity and slow down the flow rate. On the other hand, in the storage tank 10 according to the first embodiment, by providing the separation section 14, compared with the case where the separation section 14 is not provided, the capacity of the storage tank can be reduced. As a result, a storage tank with low cost, light weight, and excellent mounting space efficiency can be achieved.

[0046] Here, focus on the center position of the outlet 13 and the center positions of the swirling flows V1 and V2. As Figure 1 , Figure 2 shown, the partition portion 14 is provided directly above the outlet 13 in such a way as to equally divide the cooling water flowing out from the outlet 13. Therefore, the center position of the outlet 13 is a position deviated from the center positions of the swirling flows V1 and V2 of the cooling water generated from the respective internal spaces S1 and S2. That is, the sizes of the outlets 13 with respect to the respective internal spaces S1 and S2 of the gas-liquid separation portion are equal, and it is possible to equally suppress the separated bubbles from flowing out from the outlet 13 without bias in the respective internal spaces S1 and S2. Therefore, the cooling performance can be improved.

[0047] In addition, when the flow rate of the cooling water is increased in order to further improve the cooling performance, the difference between the flow velocity on the outer side and the flow velocity on the inner side of the swirling flows V1 and V2 becomes larger. In this case, compared with Figure 2 , Figure 3 , the heights of the liquid surfaces WS1 and WS2 of the cooling water become lower, and the liquid surface becomes a steeper slope from the inner side to the outside of the swirling flow. Even if the heights of the liquid surfaces WS1 and WS2 become lower, since the center position of the outlet 13 is a position deviated from the center positions of the swirling flows V1 and V2 of the cooling water generated from the respective internal spaces S1 and S2, it is possible to suppress the separated bubbles from flowing out from the outlet 13.

[0048] That is, by providing the partition portion 14 inside the gas-liquid separation portion 11 and making the center position of the outlet 13 a position deviated from the center positions of the swirling flows V1 and V2 of the cooling water generated from the respective internal spaces S1 and S2, the cooling performance can be further improved.

[0049] Here, a communication port (not shown) may also be provided in the partition portion 14. The communication port (not shown) is a hole for adjusting the amount or liquid surface height of the cooling water in the respective internal spaces S1 and S2 and the proportion of the space above the gas-liquid separation portion 11. Thereby, the change in the liquid surface of the respective internal spaces S1 and S2 of the storage tank is the same as that of the storage tank in the case where the partition portion 14 is not provided. When starting and stopping the vehicle, although the flow rate is low, due to the front-back, left-right movements, the liquid surface of the cooling water stored in the storage tank 10 is likely to change. In such a case, if the outlet 13 is provided near the side surface of the gas-liquid separation portion 11, there is a possibility that the bubbles contained in the cooling water flow out from the outlet 13 due to the influence of the liquid surface change.

[0050] On the other hand, if as Figures 1 to 3If the outlet 13 is provided at the central position of the gas-liquid separation section 11 as shown, it is difficult to be affected by the liquid level change, so it is possible to suppress the bubbles contained in the cooling water from flowing out of the outlet 13. In other words, in the storage tank 10, not only when the flow rate of the cooling water is increased, but even when the cooling water is at a low flow rate, it is possible to suppress the separated bubbles from flowing out of the outlet 13.

[0051] Modification

[0052] So far, an example of a storage tank in which the partition section 14 is provided in such a way as to equally divide the cooling water flowing out of the inlet 12 and the partition section 14 is provided in such a way as to equally divide the cooling water flowing out of the outlet has been described. However, it is not limited to this, and it may also be a storage tank related to the following modification. Refer to Figure 4 , and a storage tank related to the modification will be described. Figure 4 is a top view (xy top view) of a storage tank related to the modification. In Figure 4 In the storage tanks 20, 30, and 40 related to the modification shown, a partition section 14 is provided inside the gas-liquid separation section 11 in such a way as to divide the cooling water flowing in from the inlet 12.

[0053] Regarding Figure 4 the storage tank 20 related to the modification shown will be described. In Figure 4 the storage tank 20 shown, compared with the Figure 1 storage tank 10 shown, the position of the outlet 13 and the position of the partition section 14 are different. In addition, in the storage tank 20, compared with the storage tank 10, the position of the partition section 14 is different, and thus, the sizes of the internal space S3 and the internal space S4 are different. The other configurations are the same as those of the Figure 1 storage tank 10 shown, so the description is omitted.

[0054] As Figure 4 shown, in the storage tank 20, a partition section 14 is provided inside the gas-liquid separation section 11 in such a way as to divide the cooling water flowing in from the inlet 12. As Figure 4 shown, in the gas-liquid separation section 11 of the storage tank 20, internal spaces S3 and S4 are formed by the partition section 14. The partition section 14 can arbitrarily set the proportion of the internal space S3 in the inside of the gas-liquid separation section 11 and the proportion of the internal space S4 in the inside of the gas-liquid separation section 11, as long as it is provided in such a way as to divide the cooling water flowing in from the inlet 12.

[0055] In Figure 4In the storage tank 20 shown, even if the flow rate of the cooling water is increased to improve the cooling performance, the cooling water from the inflow port 12 is divided and flows into the respective internal spaces S3 and S4. Therefore, in each of the internal spaces S3 and S4, swirling flows V3 and V4 are generated while ensuring an appropriate flow velocity. In this way, for each internal space, even if the cooling water is not divided equally and flows in, an appropriate flow velocity can be ensured, and the bubbles can be separated without changing the capacity of the storage tank.

[0056] In addition, in Figure 4 the storage tank 20 shown, compared with Figure 1 the storage tank 10, the partition 14 is not provided directly above the outflow port 13. However, the central position of the outflow port 13 is a position deviated from the central positions of the swirling flows V3 and V4 of the cooling water generated in the respective internal spaces S3 and S4. Even if the partition 14 is not provided in such a way as to divide the cooling water flowing out from the outflow port 13, as long as the central position of the outflow port 13 is a position deviated from the central positions of the swirling flows V3 and V4, the separated bubbles can be suppressed from flowing out from the outflow port 13. Therefore, the cooling performance can be improved.

[0057] Here, it is also possible to, as in Figure 4 the storage tank 30 shown, provide a partition 14 inside the gas-liquid separation section 11 in such a way as to divide the cooling water flowing in from the inflow port 12, and the partition 14 is provided in such a way as to divide the cooling water flowing out from the outflow port 13. As Figure 4 shown, in the gas-liquid separation section 11 of the storage tank 30, internal spaces S5 and S6 are formed by the partition 14. The partition 14 can arbitrarily set the proportion of the internal space S5 in the interior of the gas-liquid separation section 11 and the proportion of the internal space S6 in the interior of the gas-liquid separation section 11. The partition 14 only needs to be provided in such a way as to divide the cooling water flowing in from the inflow port 12 and the cooling water flowing out from the outflow port 13.

[0058] In Figure 4 the storage tank 30 shown, if the flow rate of the cooling water is increased to improve the cooling performance, swirling flows V5 and V6 will be generated in the respective internal spaces S5 and S6. The central position of the outflow port 13 is a position deviated from the central positions of the swirling flows V5 and V6 of the cooling water generated in the respective internal spaces S5 and S6.

[0059] In such a configuration of the storage tank 30, an appropriate flow velocity can also be ensured for each of the internal spaces S5 and S6, and the bubbles can be separated without changing the capacity of the storage tank. Furthermore, since the central position of the outflow port 13 is a position deviated from the central positions of the swirling flows V5 and V6 of the cooling water generated in the respective internal spaces S5 and S6, the separated bubbles can be suppressed from flowing out from the outflow port 13, and the cooling performance can be improved.

[0060] In addition, of course, it is also possible to arrange a partition portion 14 inside the gas-liquid separation portion 11 in such a manner that the cooling water flowing in from the inflow port 12 is divided, as in the storage tank 40 shown in Figure 4 FIG. The partition portion 14 may also be arranged in such a manner that the cooling water flowing out from the outflow port 13 is equally divided.

[0061] In the storage tank 40, the partition portion 14 forms respective internal spaces S7 and S8 in the gas-liquid separation portion 11. In the storage tank 40, swirling flows V7 and V8 are respectively generated in the respective internal spaces S7 and S8. In the storage tank 40, the structure for separating bubbles and the structure for suppressing the separated bubbles from flowing out from the outflow port 13 are the same as those of the storage tanks 20 and 30, and thus the description thereof is omitted. In addition, in Figure 4 the storage tanks 20, 30, and 40 shown in FIG., the partition portion 14 is one, but a plurality of partition portions may also be arranged.

[0062] In this way, in the storage tank according to the modification example, the cooling water from the inflow port is divided, so that a swirling flow is generated while ensuring an appropriate flow velocity, and bubbles can be separated in the gas-liquid separation portion. In addition, in the storage tank according to the modification example, the central position of the outflow port deviates from the central position of the swirling flow, so that the separated bubbles can be suppressed from flowing out from the outflow port, and thus the cooling performance can be improved.

[0063] Embodiment 2

[0064] Baffle plate

[0065] Refer to Figure 5 FIG. for a description of the storage tank according to Embodiment 2. Figure 5 FIG. is a cross-sectional view (yz cross-sectional view) of the storage tank according to Embodiment 2. In the storage tank 50 according to Embodiment 2, the structures of the gas-liquid separation portion 11, the inflow port 12, the outflow port 13, and the partition portion 14 are the same as those of the storage tank 10 according to Embodiment 1, and thus the description thereof is omitted. Here, the baffle plate 51 will be described.

[0066] The baffle plate 51 is arranged to protrude upward from the bottom surface of the gas-liquid separation portion 11 between the inflow port 12 and the outflow port 13. Refer to Figure 5 FIG. for a more specific description of the baffle plate 51.

[0067] The baffle plate 51 is arranged on the bottom surface of the gas-liquid separation portion 11 so as to block a straight line connecting a specified position of the inflow port 12 and a specified position of the outflow port 13. The specified position of the inflow port 12 is an arbitrary position of the inflow port 12. In the Figure 5 example shown in FIG., it corresponds to the position P1. The specified position of the outflow port 13 is an arbitrary position of the outflow port 13. In the Figure 5 example shown in FIG., it corresponds to the position P2. As shown in Figure 5As shown, the straight line connecting position P1 and position P2 is straight line L1, and the baffle plate 51 is disposed on the bottom surface of the gas-liquid separation unit 11 in a manner that blocks straight line L1.

[0068] By disposing the baffle plate 51 in this way, it is possible to suppress the cooling water flowing into the gas-liquid separation unit from the inlet 12 from flowing out of the outlet 13 as it is. In other words, even if the cooling water from the inlet 12 contains bubbles, through the baffle plate 51, the cooling water from the inlet 12 can be made to flow in a manner that stagnates in the gas-liquid separation unit 11, and the bubbles are separated by the swirling flows V1 and V2. Then, the cooling water from which the bubbles have been separated flows out of the outlet 13.

[0069] That is, in the storage tank 50, it is possible to suppress the cooling water flowing out from the outlet 13 toward the circulation path and the object to be cooled from containing bubbles, so the cooling performance can be improved.

[0070] Shape of the baffle plate

[0071] In addition, the shape of the baffle plate 51 is not limited to Figure 5 the example shown. As long as it protrudes upward from the bottom surface of the gas-liquid separation unit 11, it can be of any shape. In addition, the angle at which the baffle plate 51 protrudes upward can be any angle. In Figure 5 the example shown, the baffle plate 51 is a single piece, but multiple pieces can also be provided.

[0072] Refer to Figure 6 for other examples of the shape of the baffle plate. Figure 6 This is a cross-sectional view (yz cross-sectional view) of the storage tank according to the second embodiment. Figure 6 The storage tank 60 shown, compared with Figure 5 the storage tank 50 shown, has a different shape of the baffle plate 51, and the other configurations are the same, so the description thereof is omitted.

[0073] As Figure 6 shown, the baffle plate 52 is disposed between the inlet 12 and the outlet 13, protruding upward from the bottom surface of the gas-liquid separation unit 11. More specifically, as Figure 6 shown, the baffle plate 52 has a baffle plate portion 52a and a baffle plate portion 52b. The baffle plate portion 52a is parallel to the z-axis, and the baffle plate portion 52b is parallel to the y-axis. That is, the baffle plate 52 is disposed on the bottom surface of the gas-liquid separation unit 11 between the inlet 12 and the outlet 13 in a manner that covers a part of the edge portion of the outlet 13.

[0074] Even with a baffle plate 52 having such a shape, in the storage tank 60, it is possible to suppress the cooling water flowing out from the outlet 13 toward the circulation path and the object to be cooled from containing bubbles, so the cooling performance can be improved.

[0075] In addition, the present disclosure is not limited to the above-described embodiments and can be appropriately modified without departing from the gist thereof.

Claims

1. A storage tank for storing the cooling water of a vehicle, characterized in that, Comprising: A substantially cylindrical gas-liquid separation section; An inlet provided on a side surface of the gas-liquid separation section for allowing cooling water to flow into the interior of the gas-liquid separation section; and An outlet provided on a bottom surface of the gas-liquid separation section for allowing cooling water to flow out of the interior of the gas-liquid separation section, By providing a partition section inside the gas-liquid separation section in a manner of dividing the cooling water flowing in from the inlet, a plurality of internal spaces are formed in the gas-liquid separation section, A central position of the outlet is a position deviated from a central position of a swirling flow of the cooling water generated from each internal space.

2. The storage tank according to claim 1, wherein, The partition section is provided in a manner of dividing the cooling water flowing out from the outlet.

3. The storage tank according to claim 1 or 2, characterized in that, The partition section is provided in a manner of equally dividing the cooling water flowing out from the outlet.

4. The storage tank according to claim 3, wherein The partition section is provided in a manner of equally dividing the cooling water flowing in from the inlet, A central position of the outlet is the same position as a center of the gas-liquid separation section.

5. The storage tank according to claim 1 or 2, characterized in that, A baffle plate protruding upward from a bottom surface of the gas-liquid separation section is provided between the inlet and the outlet.

Images