Cooling device

Abstract

This invention discloses a cooling device that circulates refrigerant to a cooled object via a siphon cycle using the object being cooled, mounted on a vehicle, as a heat source. The cooling device includes: a tank disposed above the cooled object for storing the refrigerant; an outlet passage opening inside the tank for allowing the refrigerant to flow out; a passage member extending from the inside to the outside of the tank, with its opening end located on the inner side of the tank positioned above the opening of the outlet passage; and a determining unit disposed on the outer side of the passage member located outside the tank, capable of determining the position of the opening end inside the tank.

Description

TECHNICAL FIELD

[0001] The present application relates to a cooling device for cooling a cooled object mounted on a vehicle. BACKGROUND

[0002] In Japanese Patent Application Publication No. 61-135929, a technology is disclosed in which a cooling water storage tank connected to a downstream side of a supercharger cooling passage is provided at a higher position than the supercharger, and cooling water is circulated by a thermosyphon, and the supercharger is cooled in a non-powered manner even after the engine is stopped. SUMMARY

[0003] PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] In Japanese Patent Application Publication No. 61-135929, a pipe is inserted into the tank by penetrating a bottom wall of the cooling water storage tank. After the cooling water storage tank and the pipe and the like are assembled, the inside of the tank cannot be visually confirmed, and thus the position of the open end of the pipe in the tank cannot be confirmed.

[0005] In view of the above, an object of the present application is to provide a cooling device in which, in a configuration in which a passage member extends from the inside of a tank to the outside, even if the inside of the tank cannot be visually confirmed, the position of the open end of the passage member in the tank can be confirmed.

[0006] MEANS FOR SOLVING THE PROBLEMS

[0007] A cooling device according to one embodiment of the present application is a cooling device in which refrigerant is circulated to a cooled object mounted on a vehicle by a thermosyphon cycle using the cooled object as a heat source, and includes a tank disposed above the cooled object and configured to store the refrigerant, an outflow passage that opens in the tank and is configured to cause the refrigerant to flow out, a passage member that extends from the inside of the tank to the outside and has an open end of an inside portion in the tank disposed at a position higher than the opening of the outflow passage, and a determination unit disposed at an outside portion of the passage member outside the tank and configured to determine the position of the open end in the tank.

[0008] EFFECTS OF THE INVENTION

[0009] As described above, according to the present application, a cooling device can be provided in which, in a configuration in which a passage member extends from the inside of a tank to the outside, even if the inside of the tank cannot be visually confirmed, the position of the open end of the passage member in the tank can be confirmed. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a perspective view showing a state in which the cooling device according to one embodiment of the present application is provided to an inspection device.

[0011] Figure 2 is a side view of a passage member of the cooling device of Figure 1 .

[0012] Figure 3 is a 3X-3X line sectional view of Figure 1 .

[0013] Figure 4 is a front view of an inspection portion in which a passage member is inspected in a direction in which the passage member is good by an inspection jig of an inspection device shown in Figure 1 .

[0014] Figure 5 is a front view of an inspection portion in which a passage member is inspected in a direction in which the passage member is not good by an inspection jig of an inspection device shown in Figure 1 .

[0015] Figure 6 is a sectional view showing a state in which the cooling device of one embodiment of the present application is disposed above a cooled object (corresponding to the sectional view of Figure 3 ).

[0016] Figure 7 is a sectional view showing a state in which the cooling device of another embodiment of the present application is disposed in another inspection device (corresponding to the sectional view of Figure 3 ).

[0017] Figure 8 is a sectional view showing a state in which the cooling device of another embodiment of the present application is disposed in an inspection device (corresponding to the sectional view of Figure 3 ).

[0018] Figure 9 is a sectional view showing a state in which the cooling device of another embodiment of the present application is disposed in an inspection device (corresponding to the sectional view of Figure 3 ). DETAILED DESCRIPTION

[0019] A cooling device of one embodiment of the present application is described below with reference to drawings. Note that an arrow UP appropriately illustrated in each drawing indicates the upward direction of the gravitational force. Hereinafter, the upward direction refers to the upward side of the gravitational force.

[0020] The cooling device 20 of this embodiment is a device in which a refrigerant is circulated to a cooled object 100 (see Figure 6 ) mounted on a vehicle by a siphon cycle using the cooled object 100 as a heat source.

[0021] As the cooled object 100, a turbocharger, an exhaust gas recirculation cooler (EGR cooler), an electric motor for an EV or an HV, a rotating electric machine such as a generator and a motor generator for an EV, a range extender for an EV, and an internal combustion engine, etc. can be listed. That is, an object that can become a heat source of the siphon circulation using the waste heat after the vehicle is stopped can be the cooled object 100. In addition, the cooled object 100 of the present embodiment is a turbocharger.

[0022] As shown in Figs. 1 and 2, the cooling device 20 has a tank 22, an outflow passage 24, a passage member 26, and a sleeve-like member 34. Figure 1 Figure 6 As shown in Figs. 1 and 2, the cooling device 20 has a tank 22, an outflow passage 24, a passage member 26, and a sleeve-like member 34.

[0023] (Tank)

[0024] The tank 22 is a cylindrical shape with both ends closed. The tank 22 is disposed in a posture of being laid horizontally above the cooled object 100. In addition, the posture of being laid horizontally of the tank 22 referred to herein means a posture in which the axial direction of the tank 22 becomes a direction (horizontal direction) that is substantially orthogonal to the direction of gravity. Further, the refrigerant L is stored in the inside of the tank 22.

[0025] Further, a bracket 32, 33 is attached to the lower portion of the tank 22. The brackets 32, 33 are metal fittings for attaching the tank 22 to the cooled object 100. On these brackets 32, 33, attachment holes (not shown) for attaching screws to the cooled object 100 are formed, respectively. Further, the brackets 32, 33 are also used when the tank 22 is set to the inspection device 50 described later, and become a reference for positioning the tank 22.

[0026] In addition, the tank 22 of the present embodiment is a cylindrical shape, and thus the outer wall 22A is formed in a cylindrical surface shape as one example of a curved surface shape.

[0027] (Outflow passage)

[0028] As shown in Figs. 1 and 2, the outflow passage 24 is opened in the tank 22, and is a flow path for causing the refrigerant L in the tank 22 to flow out to the outside of the tank 22. The outflow passage 24 is provided to the lower portion of the tank 22, and is constituted by a pipe that extends from the inside to the outside of the tank 22. Figure 1 Figure 3 As shown in Figs. 1 and 2, the outflow passage 24 is opened in the tank 22, and is a flow path for causing the refrigerant L in the tank 22 to flow out to the outside of the tank 22. The outflow passage 24 is provided to the lower portion of the tank 22, and is constituted by a pipe that extends from the inside to the outside of the tank 22.

[0029] (Passage member)

[0030] Figure 1 Figure 3 ​​​As shown, the passage component 26 is formed in a tubular shape, constituting an inflow passage for refrigerant L into the tank 22. Furthermore, the inflow passage formed by the outflow passage 24 and the passage component 26 constitutes the circulation path CR of the refrigerant L in the cooling device 20 (see reference). Figure 6 Part of ). Configure the object to be cooled 100 on the loop path CR.

[0031] like Figure 3 As shown, the passage component 26 extends from the inside to the outside of the tank 22.

[0032] Furthermore, the opening end 26C of the inner portion 26A of the passage component 26 within the can 22 is located above the opening 24A of the outflow passage 24. Specifically, the passage component 26 extends obliquely upward, penetrating the curved outer wall 22A of the can 22. In this embodiment, the passage component 26 is inserted into the can 22 through the through hole 23 formed in the outer wall 22A; therefore, the inner portion 26A and the outer portion 26B (described later) of the passage component 26 can be referred to as the insertion portion and the non-insertion portion, respectively.

[0033] like Figure 2 As shown, the passage component 26 is shaped such that both ends of the tube are bent in opposite directions, and the straight portion 26E between the two bent portions 26D extends through the through hole 23. Of the straight portion 26E of the passage component 26, the portion including the through hole 23 and located inside the can 22 constitutes part of the inner portion 26A, and the portion located outside the can 22 beyond the through hole 23 constitutes part of the outer portion 26B. Furthermore, in this embodiment, the bent portion 26D of the passage component 26 included in the inner portion 26A is bent relative to the straight portion 26E included in the outer portion 26B. That is, the inner portion 26A of the passage component 26 is bent relative to the outer portion 26B. Specifically, the bent portion 26D of the passage component 26 included in the inner portion 26A bends upward relative to the straight portion 26E included in the outer portion 26B.

[0034] (Sleeve-shaped component)

[0035] A cylindrical sleeve-shaped component 34 is installed on the straight portion 26E of the passage component 26. Specifically, the sleeve-shaped component 34 is engaged (in this embodiment, brazed) with the outer periphery of the outer portion 26B of the straight portion 26E located outside the tank 22.

[0036] A flange portion 28 is formed on the sleeve-shaped member 34, protruding radially outward from its outer periphery. The axis of the sleeve-shaped member 34 coincides with the axis XL of the straight portion 26E of the passage member 26, and the radial direction of the sleeve-shaped member 34 and the direction orthogonal to the axis XL in the straight portion 26E are the same direction. That is, in this embodiment, a flange portion 28 protruding in a direction orthogonal to the axis XL of the outer portion 26B is provided.

[0037] Furthermore, the flange portion 28 is formed in the shape of a circular plate and contacts the outer wall 22A of the can 22. Specifically, since the outer wall 22A is curved, the flange portion 28 contacts the circumferential edge of the through hole 23. In addition, a brazing filler metal accumulation portion is formed in the gap between the outer wall 22A and the flange portion 28 to accumulate molten brazing filler metal during brazing.

[0038] like Figure 4 As shown, a width-across flat part 30 is formed on the flange portion 28 of the sleeve-shaped member 34. The width-across flat part 30 is an example of a direction confirmation part that can confirm the rotational position of the outer portion 26B about the axis XL.

[0039] The two width portions 30 have a pair of planes 30A that face opposite directions and are parallel to each other. That is, the two width portions 30 are formed by cutting off the opposite parts of the outer periphery of the flange portion 28 in a straight line.

[0040] The cooling device 20 of this embodiment is constructed of metal: a tank 22, a pipe forming an outflow passage 24, a passage component 26, a support 32, a support 33, and a sleeve-shaped component 34, which are all brazed together. Alternatively, stainless steel can be used as the aforementioned metal material.

[0041] Next, the manufacturing process of the cooling device 20 will be explained.

[0042] First, prepare the tank 22 that constitutes the cooling device 20, the pipe that constitutes the outflow passage 24, the passage component 26, the support 32, the support 33, and the sleeve-shaped component 34.

[0043] Next, a sleeve-shaped component 34 is temporarily assembled onto the passage component 26, so that the passage component 26 penetrates the outer wall 22A of the tank 22. Specifically, the passage component 26 is inserted into the tank 22 through the through hole 23 in the outer wall 22A. After inserting the passage component 26 until the flange 28 contacts the outer wall 22A, the passage component 26 is temporarily assembled onto the tank 22. In addition, a pipe constituting the outflow passage 24 is temporarily assembled while penetrating the outer wall 22A of the tank 22. Next, supports 32 and 33 are temporarily assembled at the lower part of the tank 22. Furthermore, the aforementioned components constituting the cooling device 20 are temporarily assembled while each component is temporarily fixed by a dedicated clamp.

[0044] Next, the temporarily assembled cooling device 20 is placed in a heating furnace, and the aforementioned components are brazed together to fix them in place. The cooling device 20 is manufactured in the manner described above.

[0045] Next, the inspection device 50 for inspecting the manufactured cooling device 20 will be described.

[0046] like Figure 1 As shown, the inspection device 50 includes: an inspection table 52, an arm 54, a support wall 56, and an inspection fixture 58.

[0047] The inspection table 52 is a table for securing the tank 22 in a horizontally laid-down position. A fixing part 52A is formed on the inspection table 52 for fixing the brackets 32 and 33 with screws.

[0048] One end of the arm 54 is supported by the support wall 56 so that it can slide and move, and the other end is connected to the inspection fixture 58.

[0049] A support wall 56 is erected on the inspection table 52. A sliding groove 56A is formed in this support wall 56, supporting one end of an arm 54 inserted into the sliding groove 56A so that it can slide along the sliding groove 56A. Furthermore, a drive source (not shown) for sliding the arm 54 along the sliding groove 56A is provided in the support wall 56. Examples of such drive sources include electric motors and hydraulic cylinders (oil cylinders, pneumatic cylinders, etc.).

[0050] The inspection fixture 58 has a base portion 58A connected to the other end of the arm 54 and a pair of plate-shaped protrusions 58B protruding from the base portion 58A. Specifically, the pair of protrusions 58B are arranged opposite each other, and the distance W1 between them is greater than or equal to the width W2 of the two width portions 30 and less than the outer diameter W3 of the flange portion 28.

[0051] Next, the inspection process of inspecting the manufactured cooling device 20 by inspection device 50 will be explained.

[0052] First, such as Figure 1 As shown, brackets 32 and 33 are fixed on the inspection table 52 in a position where the tank 22 is laid horizontally.

[0053] Next, the arm 54 and the inspection clamp 58 are slidably moved together toward the two-sided width portion 30 of the flange portion 28 provided on the outer side portion 26B of the passage member 26. The width W2 of the two-sided width portion 30 is less than or equal to the interval W1 of the inspection clamp 58, so that the plane 30A constituting the two-sided width portion 30 is not inclined relative to the reference plane along the sliding direction of the flange portion 28, as Figure 4As shown, the two width portions 30 extend between a pair of protrusions 58B. On the other hand, when the plane 30A constituting the two width portions 30 is inclined relative to the aforementioned reference plane, as... Figure 5 As shown, the two width portions 30 cannot enter between the pair of protrusions 58B, allowing the rotation of the passage component 26 to be confirmed. As described above, the rotational position of the outer portion 26B of the passage component 26 about the axis XL after brazing can be confirmed.

[0054] Next, the effects of the cooling device in this embodiment will be explained.

[0055] like Figure 6 As shown, the cooling device 20 is positioned above the engine E. When the engine E is running, the refrigerant L in the tank 22 (described later) is pumped out by a pump (not shown) and circulates within the circulation path CR, cooling the object 100 on the circulation path CR. On the other hand, although the pump stops when the engine E stops, the refrigerant L, which has boiled due to the heat of the object 100, accumulates in the tank 22. Due to the pressure and gravity within the tank 22, the refrigerant L in the tank 22 is discharged from the outflow passage 24 (described later) according to the siphon principle. If the refrigerant L is discharged according to the siphon principle, a negative pressure is created inside the tank 22, and the refrigerant L is drawn into the tank 22 via the passage component 26 (described later). Furthermore, if the refrigerant L, which has boiled due to the heat of the object 100, accumulates in the tank 22, the refrigerant L in the tank 22 is discharged. This series of actions is repeated. In addition, when the temperature of the object 100 being cooled is lower than the boiling point of the refrigerant L, the circulation cycle of the refrigerant L automatically stops.

[0056] In the cooling device 20 of this embodiment, the inner portion 26A of the passage member 26 is curved relative to the outer portion 26B. A two-sided width portion 30 is provided on the outer portion 26B of the passage member 26, serving as an example of a direction confirmation portion capable of confirming the rotational position of the outer portion 26B about the axis XL. By confirming the rotational position of the outer portion 26B through this two-sided width portion 30, the position of the opening end 26C of the passage member 26 inside the tank 22 can be determined. Furthermore, the two-sided width portion 30 is provided on the outer portion 26B located outside the tank 22, that is, it protrudes to the outside of the tank 22. Therefore, with the cooling device 20 described above, the position of the opening end 26C of the passage member 26 inside the tank 22 can be confirmed even if the inside of the tank 22 cannot be visually seen.

[0057] In the cooling device 20 described above, the rotational position of the outer portion 26B of the passage member 26 can be determined by the two width portions 30 having a pair of planes facing opposite directions and parallel to each other. That is, with the cooling device 20 described above, the position of the opening end 26C of the passage member 26 inside the tank 22 can be accurately determined with a simple configuration.

[0058] Furthermore, in the cooling device 20 described above, when the tank 22 and the sleeve-shaped component 34 installed on the passage component 26 are brazed, since a brazing filler metal accumulation portion is formed between the flange portion 28 and the outer wall 22A, the passage component 26 and the tank 22 are firmly joined (brazed) via the flange portion 28.

[0059] Furthermore, since the flange portion 28 has a two-sided width portion 30, compared to a configuration in which other components mounted on the passage component 26 have two-sided width portions, the number of components can be reduced and the increase in brazing portions can be suppressed.

[0060] In the cooling device 20, since the outer wall 22A of the tank 22 is cylindrical, it is easy to increase the amount of solder accumulation between the outer wall 22A and the flange 28. As a result, the bonding strength between the passage component 26 and the tank 22 can be improved.

[0061] Furthermore, to obtain the height of the opening end of the passage component inside the tank relative to the opening of the outflow passage, it is preferable to insert the passage component from the bottom wall of the tank from the viewpoint of utilizing the siphon principle. Most existing technologies also employ this configuration. However, in this case, the height of the tank, positioned above the object being cooled, becomes higher. For example, if the object being cooled is mounted in the front compartment of a car, a higher tank height is unsuitable from the viewpoint of ensuring sufficient space between structures such as the engine and the hood to protect pedestrians. Therefore, a method has been developed in which a cylindrical tank is laid horizontally and an annular passage component is inserted into its cylindrical surface. Since there is no margin in the height direction of the tank, it is necessary to improve the positional accuracy of the opening end of the passage component; therefore, a technique for determining the position of the opening end has been developed.

[0062] In the cooling device 20 described above, since the cylindrical tank 22 is arranged in a horizontally laid-down position above the object to be cooled 100, for example, compared to a configuration in which the tank is arranged in a vertically erect position above the object to be cooled 100, a larger space above the tank can be ensured in the vehicle.

[0063] Furthermore, in the cooling device 20, since the passage member 26 extends obliquely upward and penetrates the outer wall 22A of the tank 22, the height of the tank 22 can be reduced compared to a configuration where, for example, the passage member 26 extends upward and penetrates the bottom wall of the tank 22. This allows for a larger space above the tank in the vehicle.

[0064] In the described embodiment, a two-sided width portion 30 is formed on the flange portion 28 of the sleeve-shaped member 34; however, the present invention is not limited to this configuration. It is also possible to have the flange portion 28 and the two-sided width portion 30 separately provided.

[0065] Furthermore, in the described embodiment, a two-sided width portion 30 is used as an example of a direction confirmation portion, but the present invention is not limited to this configuration. For example, it is also possible to form a plane in the flange portion 28. As long as the plane has a certain area, it is possible to check whether the rotational position of the outer portion 26B is in a predetermined state by inserting a fork-shaped tool, similar to the inspection clamp 58, into the portion where the plane is formed.

[0066] Furthermore, in the described embodiment, the inclination of the plane 30A of the two width portions 30 is confirmed by the inspection fixture 58 of the inspection device 50, but the present invention is not limited to this configuration. For example, such as Figure 7 As shown, the curved portion 26D of the outer portion 26B of the passage component 26 can be folded back, and the rotational position of the outer portion 26B about the axis XL can be confirmed by the curved portion 26D and the folded-back portion 26F. The curved portion of the outer portion 26B, which bends between the curved portion 26D and the folded-back portion 26F, functions as an example of a direction confirmation part.

[0067] Furthermore, in the described embodiment, a passage component 26 consisting of a single pipe is provided as a conduit connected to the tank 22, but the shape of the passage component 26 is not limited. For example, such as Figure 8 As shown, as a conduit connected to the tank 22, an elbow-shaped passage component 72 that engages with the tank 22 and a connecting pipe 74 connected to the passage component 72 may also be provided. The two ends of the passage component 72 are cylindrical. The passage component 72 is manufactured by machining the two ends of an L-shaped metal piece into cylindrical shapes, and then boring from the cylindrical ends in mutually orthogonal directions to form a passage. The passage component 72 includes an inner portion 72A disposed within the tank 22 and a cylindrical outer portion 72B that penetrates the outer wall 22A of the tank 22 and extends from the inner portion 72A to the outer side of the tank 22. A two-sided width portion 30, similar to the one described above, is formed on the cylindrical outer portion 72B. Furthermore, the connecting pipe 74 is connected to the passage component 72 by being inserted into the inner circumference of the outer portion 72B.

[0068] In the described embodiment, the passage component 26 is shaped such that the two ends of the tube bend in opposite directions, but the invention is not limited to this configuration. For example, such as Figure 9As shown, a configuration in which the passage component 60 extends in a straight line can also be adopted, that is, a straight pipe is used as the passage component 60. A protrusion 62 is provided on the outer portion 60B of the passage component 60 for confirming the insertion length into the can 22 (the length S of the inner portion 60A). This protrusion 62 is an example of a length confirmation part that functions as a confirmation unit, and is a spool portion formed by compressing the pipe in the axial direction. When the pipe inserted into the can 22 is a straight pipe, even if the inside of the can 22 cannot be seen visually, the position of the opening end 60C of the passage component 60 inside the can 22 can be confirmed by the protrusion 62.

[0069] The embodiments of the present invention have been described above by way of example, but these embodiments are merely examples and can be implemented with various modifications without departing from the spirit of the present invention. For example, instead of the two-sided or one-sided width portion described above, a mark such as a punch or paint can be applied to the outer portion of the passage member, so that the mark functions as an example of a direction confirmation portion. In addition, instead of the protrusion applied to the straight pipe described above, a protrusion can be provided on the outer portion 60B of the passage member 60, so that the protrusion functions as an example of a length confirmation portion. Furthermore, the length of the inner portion 26A can also be confirmed by the contact between the flange portion 28 of the sleeve-shaped member 34 and the outer wall 22A of the can 22, so the flange portion 28 can also function as an example of a length confirmation portion. Of course, the scope of the present invention is not limited to these embodiments.

[0070] The following notes further disclose the above implementation methods.

[0071] (Postscript 1)

[0072] A cooling device circulates refrigerant to the object being cooled via a siphon circulation, using the object mounted on a vehicle as a heat source. The cooling device includes:

[0073] A tank, positioned above the object being cooled, is used to store the refrigerant;

[0074] An outlet passage, which has an opening inside the tank, is provided for the refrigerant to flow out.

[0075] A passage component, extending from the inside to the outside of the can, has its opening end located on the inner side of the can above the opening of the outflow passage; and

[0076] The determining unit, located on the outer portion of the passage component outside the can, is capable of determining the position of the opening end inside the can.

[0077] In the cooling device described in Appendix 1, a determining unit is provided on the outer portion of the passage component located outside the tank. This determining unit can determine the position of the opening end of the passage component inside the tank. Therefore, according to the cooling device described above, the position of the opening end of the passage component inside the tank can be determined even if the inside of the tank cannot be seen visually.

[0078] (Postscript 2)

[0079] According to the cooling device described in Appendix 1, wherein,

[0080] The passage component penetrates the outer wall of the can, and the inner portion is curved relative to the outer portion.

[0081] The determining unit has a direction confirmation unit that can confirm the rotational position of the outer portion about the axis.

[0082] In the cooling device described in Appendix 2, the inner portion of the passage component is bent relative to the outer portion, and a direction confirmation part is provided on the outer portion of the passage component to confirm the rotational position of the outer portion about an axis. When the outer portion of the passage component, which is bent relative to the outer portion, rotates relative to the can about an axis, the position of the opening end of the passage component changes within the can. That is, if the rotational position of the outer portion is determined, the position of the opening end of the passage component inside the can is also determined. According to the cooling device described in Appendix 2, the rotational position of the outer portion of the passage component can be confirmed by the direction confirmation part; therefore, even if the inside of the can is not visually visible, the position of the opening end of the passage component inside the can can be accurately determined from the outside of the can.

[0083] (Note 3)

[0084] According to the cooling device described in Appendix 2, wherein,

[0085] The direction confirmation part is composed of two width portions, which are disposed on the outer portion and have a pair of planes that face opposite directions and are parallel to each other.

[0086] In the cooling device described in Appendix 3, the rotational position of the outer portion of the passage component can be determined by the two-sided width portion having a pair of planes that face opposite directions and are parallel to each other. That is, with the cooling device described in Appendix 3, the position of the opening end of the passage component inside the tank can be accurately determined by the simply constructed direction-confirming part.

[0087] (Postscript 4)

[0088] According to the cooling device described in Appendix 2, wherein,

[0089] The direction confirmation part is formed by bending the outer portion.

[0090] In the cooling device described in Appendix 4, the rotational position of the outer portion about its axis can be determined by positioning it at two points on both sides, separated by the curved portion of the outer portion. That is, according to the cooling device described in Appendix 4, the position of the opening end of the passage component inside the tank can be accurately determined by the direction-confirming part, which is simply configured to bend the outer portion.

[0091] (Note 5)

[0092] According to the cooling device described in Appendix 1, wherein,

[0093] The passage component extends in a straight line and penetrates the outer wall of the can, and the determining unit has a length confirming part that can confirm the length of the inner portion along the axis.

[0094] In the cooling device described in Appendix 5, the passage component extends linearly and penetrates the outer wall of the tank. A length confirmation section is provided on the outer portion of the passage component to confirm the axial length of the inner portion. By confirming the axial length of the inner portion through this length confirmation section, the position of the opening end of the passage component inside the tank can be accurately determined.

[0095] (Note 6)

[0096] According to the cooling device described in Appendix 5, wherein...

[0097] The length confirmation section is composed of a protrusion that protrudes from the outer portion in a direction orthogonal to the axis and contacts the outer wall of the tank.

[0098] In the cooling device described in Appendix 6, the protrusion that contacts the outer wall of the tank constitutes the length confirmation part. Therefore, by inserting the passage member into the tank until the protrusion contacts the outer wall of the tank, for example, the accuracy of the insertion length of the passage member can be improved.

[0099] (Note 7)

[0100] According to the cooling device described in Appendix 3, wherein...

[0101] A sleeve-shaped component having an outer periphery that engages with the outer portion of the passage component and contacts the outer wall of the can.

[0102] The two width portions are disposed on the sleeve-shaped component.

[0103] In the cooling device described in Appendix 7, when the tank and the passage component are brazed, a brazing filler metal storage section is formed between the sleeve-shaped component and the outer wall of the tank, so that the passage component and the tank are firmly joined (brazed) through the sleeve-shaped component.

[0104] (Note 8)

[0105] According to the cooling device described in Appendix 7, the outer wall of the tank is formed in a curved shape.

[0106] In the cooling device described in Appendix 8, when the sleeve-shaped component is joined by brazing while in contact with the outer wall of the tank, if the outer wall of the tank is curved, the amount of brazing filler metal accumulating between the outer wall of the tank and the sleeve-shaped component tends to increase. Therefore, using a sleeve-shaped component has the advantage when the outer wall of the tank is curved. This improves the bonding strength between the passage component and the tank.

[0107] (Note 9)

[0108] The cooling device according to any one of Appendices 1 to 8, wherein the passage component extends obliquely upward and penetrates the outer wall of the tank.

[0109] In the cooling device described in Appendix 9, since the passage component extends upward at an angle and penetrates the outer wall of the tank, the height of the tank can be reduced, for example, compared to a configuration where the passage component extends upward and penetrates the bottom wall of the tank. This allows for a larger space to be secured above the tank in the vehicle.

[0110] (Postscript 10)

[0111] According to the cooling device described in Appendix 9, the tank is a cylindrical shape with both ends closed, and is arranged in a horizontally laid-down position above the object being cooled.

[0112] In the cooling device described in Appendix 10, a cylindrical tank with closed ends is arranged horizontally above the object being cooled. Therefore, compared to a configuration in which the cylindrical tank is arranged vertically above the object being cooled, a larger space above the tank in the vehicle can be ensured.

[0113] Furthermore, the entire contents of the invention in Japanese Patent Application No. 2018-141689, filed on July 27, 2018, are incorporated herein by reference.

[0114] All documents, patent applications and technical standards described in this specification are incorporated herein by reference to the same extent as those specifically and individually described as being referenced by reference.

Claims

1. A cooling device that circulates refrigerant to a cooled object mounted on a vehicle by a siphon cycle using the cooled object as a heat source, the cooling device comprising: a tank disposed above the cooled object to store the refrigerant; an outflow passage opening in the tank to flow out the refrigerant; a passage member extending from an inner side of the tank to an outer side, an opening end of an inner side portion of the passage member in the tank being disposed at a position higher than an opening of the outflow passage; and a determination unit disposed at an outer side portion of the passage member on an outer side of the tank, the determination unit being able to determine a position of the opening end in the tank, wherein the passage member penetrates an outer wall of the tank, and the inner side portion is curved with respect to the outer side portion, the determination unit has a direction confirmation portion that is able to confirm a rotational position of the outer side portion around an axis, the direction confirmation portion is composed of a one-sided width portion having one flat surface or a two-sided width portion disposed at the outer side portion and having a pair of flat surfaces facing each other and being opposite and parallel to each other, the one-sided width portion or the two-sided width portion is disposed at a sleeve-shaped member that is engaged with an outer periphery of the outer side portion of the passage member and is in contact with the outer wall of the tank.

2. The cooling device according to claim 1, wherein the outer wall of the tank is formed in a curved surface shape.

3. The cooling device according to claim 1 or 2, wherein the passage member extends obliquely upward and penetrates the outer wall of the tank.

4. The cooling device according to claim 3, wherein the tank is a cylindrical shape with both ends closed, and is disposed in a posture laid horizontally above the cooled object. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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