Reservoir tank

Abstract

The present invention relates to a reservoir tank comprising: a tank body having a cooling water injection port formed therein and storing cooling water inside; an inlet pipe connected to one side of the tank body and communicating with the interior; and an outlet pipe connected to the other side of the tank body and communicating with the interior; wherein the height of the upper end of one side of the tank body is formed lower than the height of the upper end of the other side, and the inlet pipe is connected to the tank body so that cooling water flows from the upper end of one side of the tank body toward the lower end, thereby preventing the generation of bubbles in the cooling water by suppressing the wave effect occurring on the water surface inside the reservoir tank caused by the flow of cooling water entering the reservoir tank.

Description

Technology Field

[0001] The present invention relates to a reservoir tank connected to a line through which the vehicle's coolant circulates, which stores the coolant and replenishes the coolant. Background Technology

[0002] Recently, electric vehicles have been gaining attention in the automotive sector as a solution to problems such as the implementation of eco-friendly technologies and energy depletion.

[0003] Electric vehicles produce low carbon emissions and noise because they drive using a motor powered by electricity supplied from batteries or fuel cells. In addition, electric vehicles are eco-friendly because they use motors that are more energy-efficient than conventional engines.

[0004] These electric vehicles are equipped with a thermal management system for heating and cooling the interior and for cooling electrical components such as the drive motor, battery, and inverter; the thermal management system includes a coolant system for heating the vehicle's interior and for cooling and heating electrical components.

[0005] A reservoir tank can be connected to the cooling line through which the cooling water of the cooling system circulates, and cooling water can be stored in the reservoir tank and can replenish insufficient cooling water from the reservoir tank to the cooling line.

[0006] Unlike a reservoir tank that is simply connected to a cooling line as a branch line and primarily functions to supply cooling water that is insufficient in the cooling line, there is a reservoir tank configured to be connected in series on the cooling line so that cooling water flows inside. In such a reservoir tank configured to have cooling water flowing inside, as shown in FIG. 1, a cooling water inlet (1) is formed in the tank body (10) so that cooling water can be injected, and a cooling water inlet (2) into which cooling water flowing along the cooling line flows and a cooling water outlet (3) into which cooling water is discharged are formed, so that the cooling water inlet and the cooling water outlet are connected in series on the cooling line so that cooling water flowing along the cooling line can pass through the reservoir tank.

[0007] However, within these reservoir tanks, bubbles frequently form due to the flow of the coolant. These bubbles enter the coolant pump, eroding its interior and causing a deterioration in durability. The primary cause of this bubble formation is the wave effect, where the rapid flow of coolant entering the tank causes the water to ripple above the surface, trapping air and generating bubbles.

[0008] In order to prevent the generation of bubbles, a conventional reservoir tank is formed such that a part of the cooling water inlet (2) is inserted into the interior of the tank body (10) as shown in FIG. 2 and the cooling water inlet (2) is directed downward, but this also has the problem of generating bubbles due to the wave effect on the water surface caused by the flow velocity of the cooling water. Prior art literature

[0009] (Patent Document 0001) KR 2021-0096343 A (2021.08.05.) The problem to be solved

[0010] The present invention has been devised to solve the problems described above, and the objective of the present invention is to provide a reservoir tank that can prevent the generation of bubbles in the cooling water by suppressing the wave effect occurring on the water surface inside the reservoir tank due to the flow of cooling water flowing into the reservoir tank, in a reservoir tank formed with an inlet for cooling water and an outlet for cooling water. means of solving the problem

[0011] A reservoir tank of the present invention for achieving the above-mentioned purpose comprises: a tank body having a cooling water injection port formed therein and storing cooling water inside; an inlet pipe connected to one side of the tank body and communicating with the interior; and an outlet pipe connected to the other side of the tank body and communicating with the interior; wherein the height of the upper end of one side of the tank body is formed to be lower than the height of the upper end of the other side, and the inlet pipe may be connected to the tank body so that cooling water flows from the upper end of one side of the tank body toward the lower end.

[0012] In addition, the reservoir tank may have a stepped portion formed on one side such that the height of the upper part of one side is lower than the height of the upper part of the other side.

[0013] In addition, the inlet pipe can be connected to the upper surface of the stepped portion.

[0014] In addition, at least a portion of the inlet pipe is inserted into one side of the tank body, and the lower end of the inlet pipe disposed inside one side of the tank body may be spaced apart from adjacent to the lower end of one side of the tank body.

[0015] Additionally, the inlet pipe may include: a first pipe section formed to extend in the vertical direction and a portion of which is inserted into the interior of one side of the tank body; and a second pipe section disposed outside the tank body and formed to extend in a bent shape from the upper end of the first pipe section.

[0016] In addition, the above-mentioned coolant injection port may be formed on the upper side of the other side of the tank body.

[0017] In addition, the interior of the tank body may be filled with cooling water such that the water level is higher than the height of the upper side.

[0018] Additionally, the outlet pipe may be positioned adjacent to the lower side of the other side of the tank body. Furthermore, one side of the tank body having the stepped portion may be formed in a structure that is completely open to the other side of the tank body without a partition wall.

[0019] In addition, it may further include a partition wall provided inside the tank body and coupled to the tank body to partition the internal space of the tank body.

[0020] In addition, a communication hole penetrating both sides in the thickness direction may be formed in the above bulkhead. Effects of the invention

[0021] The reservoir tank of the present invention, having an inlet for the inflow of cooling water and an outlet for the discharge of cooling water formed therein, has the advantage of preventing the generation of bubbles in the cooling water by suppressing the wave effect generated on the water surface inside the reservoir tank by the flow of cooling water flowing into the reservoir tank. Brief explanation of the drawing

[0022] Figures 1 and 2 are front cross-sectional views showing a conventional reservoir tank. FIGS. 3 and FIGS. 4 are perspective views showing a reservoir tank according to an embodiment of the present invention. FIGS. 5 and 6 are front cross-sectional views showing a reservoir tank and the flow of cooling water according to an embodiment of the present invention. FIG. 7 is a front cross-sectional view showing a reservoir tank according to another embodiment of the present invention. Specific details for implementing the invention

[0023] Hereinafter, the reservoir tank of the present invention having the configuration as described above will be explained in detail with reference to the attached drawings.

[0024] FIGS. 3 and 4 are perspective views showing a reservoir tank according to an embodiment of the present invention, and FIGS. 5 and 6 are front cross-sectional views showing the reservoir tank and the flow of cooling water according to an embodiment of the present invention.

[0025] As described above, the reservoir tank of the present invention may largely comprise a tank body (100), an inlet pipe (200), and an outlet pipe (300).

[0026] The tank body (100) can be formed in the shape of a container capable of storing coolant. The tank body (100) can be connected to a coolant line constituting a coolant system and can serve to replenish the coolant stored inside onto the coolant line. Additionally, the tank body (100) can be formed in a stepped shape such that the upper height of one side is lower than the upper height of the other side. That is, the tank body (100) can be formed with a stepped section (110) on one side with a relatively lower upper height, and the other side with a relatively higher upper height. Furthermore, a coolant injection section (120) is formed on the upper side of the other side of the tank body (100), allowing coolant to be injected into the interior of the tank body (100) through the coolant injection section (120).

[0027] The inlet pipe (200) is connected to the upper surface of the stepped portion (110) on one side of the tank body (100), so that the inlet pipe (200) and the tank body (100) can communicate. The inlet pipe (200) is formed to extend from the upper surface of the stepped portion (110) on one side of the tank body (100) toward the lower side, so that cooling water can flow into the interior of the tank body (100) from the upper side to the lower side. For example, the inlet pipe (200) may include a first pipe section (210) and a second pipe section (220), and may be formed to extend in a bent shape in a direction where the second pipe section (220) intersects from the upper end of the first pipe section (210). In addition, the first pipe section (210) may be formed to extend in the vertical direction (vertical direction) and arranged in a form in which a part of it is inserted into the interior of the tank body (100), and the lower end of the first pipe section (210) may be spaced apart and adjacent to the bottom of one side of the tank body (100). Also, the second pipe section (220) may be formed in the horizontal direction.

[0028] The outlet pipe (300) is positioned adjacent to the lower side of the tank body (100), and the outlet pipe (300) may be connected to the tank body (100). The outlet pipe (300) may be formed to extend horizontally.

[0029] In addition, the inlet pipe (200) and the outlet pipe (300) may be formed separately from the tank body (100) and connected to the tank body (100), or the inlet pipe (200) and the outlet pipe (300) may be formed integrally with the tank body (100) through injection molding, etc. Furthermore, the inlet pipe (200) is connected to a cooling water line so that cooling water circulating along the cooling water system can flow into the interior of the tank body (100) through the inlet pipe (200). Additionally, the outlet pipe (300) is connected to a cooling water line so that cooling water inside the tank body (100) can be supplied to the cooling water line through the outlet pipe (300).

[0030] That is, the reservoir tank of the present invention can be connected to a cooling water system and configured so that cooling water continues to flow along the inside of the reservoir tank. At this time, as shown in FIG. 6, the water level of the cooling water (500) introduced into the interior of the tank body (100) can be formed to be higher than the upper end of one side of the tank body (100) and lower than the upper end of the other side. Thus, the interior of one side of the tank body (100) can be filled with cooling water from the bottom to the top, and the interior of the other side of the tank body (100) may have less cooling water and air in a portion of the upper side.

[0031] Accordingly, in the reservoir tank of the present invention, which is formed with an inlet for the inflow of cooling water and an outlet for the discharge of cooling water, the wave effect can be prevented because the upper part of the reservoir tank, at the cooling water inlet side where the flow of cooling water is high, can be kept in a state where there is no air and the cooling water is always filled. In other words, by suppressing the wave effect that may occur on the water surface inside the reservoir tank due to the flow of cooling water entering the interior of the reservoir tank, the generation of bubbles in the cooling water can be prevented.

[0032] FIG. 7 is a front cross-sectional view showing a reservoir tank according to another embodiment of the present invention.

[0033] As described above, the reservoir tank of the present invention may further include a partition wall (400), and a connecting hole (410) may be formed in the partition wall (400) so that cooling water can pass through.

[0034] The partition wall (400) can be formed in various shapes to partition the internal space of the tank body (100) and prevent the cooling water from sloshing. The partition wall (400) can be formed to partition the internal space of the tank body (100) in a way that allows the cooling water to flow through interconnected spaces, rather than being completely separated and sealed. For example, the partition wall (400) may be a combination of a vertically formed partition wall and a horizontally formed partition wall, and the partition wall (400) may be attached to the tank body (100). Alternatively, the partition wall (400) may be formed integrally with the tank body (100) by injection molding, etc. Additionally, the partition wall (400) may have connecting holes (410) that penetrate both sides in the thickness direction of the partition wall (400) at various locations, in various numbers, and in various shapes.

[0035] The present invention is not limited to the embodiments described above and has a diverse scope of application. Furthermore, it is understood that anyone with ordinary knowledge in the field to which the present invention pertains can make various modifications without departing from the essence of the invention as claimed in the claims. Explanation of the symbols

[0036] 100: Tank body 110: Step section 120: Coolant filler 200: Inlet pipe 210: First pipe section 220 : Second Section 300: Outlet pipe 400 : Bulkhead 410 : Chimney hole 500 : Coolant

Claims

Claim 1 A reservoir tank comprising: a tank body having a cooling water injection port formed therein and storing cooling water inside; an inlet pipe connected to one side of the tank body and communicating with the interior; and an outlet pipe connected to the other side of the tank body and communicating with the interior; wherein the height of the upper end of one side of the tank body is formed lower than the height of the upper end of the other side, and the inlet pipe is connected to the tank body so that cooling water flows from the upper end of one side of the tank body toward the lower end, wherein the tank body has a stepped portion formed on one side such that the height of the upper end of one side is lower than the height of the upper end of the other side, and the inlet pipe is connected to the upper surface of the stepped portion, and the outlet pipe is positioned adjacent to the lower end of the other side of the tank body, and wherein the one side of the tank body having the stepped portion is structured to be completely open to the other side of the tank body without a partition wall. Claim 2 delete Claim 3 delete Claim 4 A reservoir tank according to claim 1, characterized in that at least a portion of the inlet pipe is inserted into one side of the tank body, and the lower end of the inlet pipe disposed inside one side of the tank body is spaced apart adjacent to the lower end of one side of the tank body. Claim 5 A reservoir tank according to claim 1, wherein the inlet pipe comprises: a first pipe section formed to extend in the vertical direction and a portion of which is inserted into the interior of one side of the tank body; and a second pipe section disposed outside the tank body and formed to extend in a bent shape from the upper end of the first pipe section. Claim 6 A reservoir tank according to claim 1, characterized in that the cooling water injection part is formed on the upper side of the other side of the tank body. Claim 7 A reservoir tank according to claim 1, characterized in that the interior of the tank body is filled with cooling water such that the water level is higher than the height of the upper side. Claim 8 delete Claim 9 A reservoir tank according to claim 1, further comprising a partition wall provided inside the tank body and coupled to the tank body to partition the internal space of the tank body. Claim 10 A reservoir tank according to claim 9, characterized in that the bulkhead has a connecting hole formed therein that penetrates both sides in the thickness direction.

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