Expansion tank of liquid cooling equipment

Abstract

An expansion water tank of liquid cooling equipment comprises a tank body, a liquid inlet pipe, a liquid outlet pipe, a liquid supplementing pipe, a heating piece, a pressure stabilizing cover, a liquid level switch and a temperature sensor, the liquid inlet pipe, the liquid outlet pipe and the liquid supplementing pipe are all communicated with the tank body, the heating piece is arranged on the outer side surface of the tank body, a tank opening is formed in the upper end of the tank body, the pressure stabilizing cover is arranged at the tank opening, and the pressure stabilizing cover comprises a cover body and a pressure stabilizing valve. The cover body is provided with a gas channel, the pressure stabilizing valve is located in the gas channel, and at least one part of the liquid level switch and at least one part of the temperature sensor are both located in the box body. Due to the fact that the expansion water tank is provided with the pressure stabilizing cover, the heating piece and the liquid supplementing pipe, and the liquid level switch and the temperature sensor are used for detecting the liquid amount and the temperature respectively, the expansion water tank has the pressure stabilizing function, the heating function and the liquid supplementing function at the same time, and the effective pressure stabilizing effect can be achieved without the help of external equipment.

Description

Technical Field

[0001] The utility model relates to an expansion tank, in particular to an expansion tank for a liquid cooling device. Background Art

[0002] With the rapid development of the energy storage industry, the application of liquid cooling devices has been increasing continuously. Since the pressure of the coolant circuit will increase or decrease with the change of the ambient temperature, it is necessary to provide voltage stabilization protection for the coolant circuit. Some liquid cooling devices use the method of exhausting air from the coolant circuit to stabilize the voltage, but exhausting air will cause loss of the coolant inside the pipeline, resulting in frequent need to supplement the coolant in the coolant circuit.

[0003] To solve the above problems, some expansion tanks of liquid cooling devices are provided with a voltage stabilization structure. For example, an expansion tank cap disclosed in Chinese Utility Model CN201991601U can meet the pressure of the engine high-pressure cooling system. This expansion tank cap can relieve pressure when the pressure inside the expansion tank is too high and introduce air when the pressure inside the expansion tank is too low, so as to achieve the effect of voltage stabilization.

[0004] However, the pressure of the liquid cooling device is affected not only by the pressure of the coolant circuit, but also by the temperature and the liquid volume. When the temperature or the liquid volume changes rapidly, the existing voltage stabilization structure cannot respond quickly, that is, it cannot achieve the true voltage stabilization effect. In order to control the temperature and the liquid volume, heating pipelines need to be added in the liquid cooling device, and at the same time, manual control of the liquid volume is also required, which greatly increases the cost. Content of the Utility Model

[0005] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the utility model is to provide an expansion tank for a liquid cooling device, which has the functions of voltage stabilization, heating and liquid supplement at the same time, so that the liquid cooling device does not need to be externally provided with other mechanisms, reducing the cost.

[0006] To achieve the above purpose, the utility model provides an expansion tank for a liquid cooling device, including: a box body, a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe and the liquid outlet pipe are both communicated with the box body. The expansion tank further includes: a liquid supplement pipe, a heating sheet, a voltage stabilization cover, a liquid level switch and a temperature sensor. The liquid supplement pipe is also communicated with the box body. The heating sheet is arranged on the outer surface of the box body. There is a box opening at the upper end of the box body. The voltage stabilization cover is arranged at the box opening. The voltage stabilization cover includes: a cover body and a voltage stabilization valve. The cover body is provided with a gas passage. The voltage stabilization valve is located in the gas passage. At least a part of the liquid level switch and at least a part of the temperature sensor are both located inside the box body.

[0007] Further, the pressure stabilizing valve includes: a valve sleeve, a valve core, a first spring, and a second spring. The two ends of the first spring respectively abut against the cover body and the valve sleeve to provide a force for blocking the gas passage to the valve sleeve. The valve sleeve is provided with an air hole. The two ends of the second spring respectively abut against the valve sleeve and the valve core to provide a force for blocking the air hole to the valve core. Among them, since the pressure stabilizing valve includes a movable valve sleeve and valve core, it can both exhaust gas when the pressure inside the box body is too high and intake air when the pressure inside the box body is too low. Only one valve component can meet the exhaust and intake requirements of the pressure stabilizing function.

[0008] Further, the valve core includes: a rod body, a pressing plate, and a sealing cover. Both the pressing plate and the sealing cover are fixed to the rod body. The two ends of the second spring respectively abut against the valve sleeve and the pressing plate. The rod body passes through the air hole. The sealing cover is in close contact with a surface of the valve core facing away from the second spring under the action of the second spring. Among them, since the sealing cover is used to contact the valve core instead of directly blocking the air hole with a plug, the situation where the plug in the traditional valve component is too tightly fitted with the air hole and cannot be opened can be avoided.

[0009] Further, the box opening is provided on the upper wall of the box body. Both the liquid level switch and the temperature sensor pass through the upper wall of the box body. Among them, setting the box opening, the through hole through which the liquid level switch passes, and the through hole through which the temperature sensor passes on the upper wall can facilitate the user to install the pressure stabilizing cover, the liquid level switch, and the temperature sensor.

[0010] Further, there are multiple heating sheets, and the multiple heating sheets are arranged evenly around the box body. Among them, setting multiple heating sheets can achieve the effect of uniform heating.

[0011] Further, the expansion tank further includes: a filter screen, and the filter screen is located inside the liquid inlet pipe. Among them, setting the filter screen can filter impurities in the coolant and avoid impurities from entering the circulation.

[0012] After adopting the above technical solution, the beneficial effects of the present utility model are: Since the expansion tank of the present utility model is provided with a pressure stabilizing cover, heating sheets, and a liquid replenishing pipe, and the liquid level and temperature are respectively detected by the liquid level switch and the temperature sensor, it simultaneously has the functions of pressure stabilization, heating, and liquid replenishment, and can achieve an effective pressure stabilizing effect without relying on external equipment. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the expansion tank related to the present utility model;

[0014] Figure 2 It is a vertical sectional view of the expansion tank related to the present utility model;

[0015] Figure 3 It is a partial enlarged view of the expansion tank related to the present utility model at circle A.

[0016] The reference numerals are: 1, the box body; 10, the box opening; 2, the liquid inlet pipe; 3, the liquid outlet pipe; 4, the liquid replenishing pipe; 5, the heating sheet; 6, the pressure stabilizing cover; 61, the cover body; 610, the gas passage; 62, the valve sleeve; 620, the air hole; 63, the valve core; 631, the rod body; 632, the pressing plate; 633, the sealing cover; 64, the first spring; 65, the second spring; 7, the liquid level switch; 8, the temperature sensor; 9, the filter screen. Specific Embodiment

[0017] The technical solution of the present utility model will be further described below through embodiments:

[0018] The present utility model provides an expansion water tank for a liquid cooling device, in combination with Figures 1-2 As shown, the expansion water tank includes: a box body 1, a liquid inlet pipe 2, a liquid outlet pipe 3, a liquid replenishing pipe 4, a heating sheet 5, a pressure stabilizing cover 6, a liquid level switch 7, a temperature sensor 8, and a filter screen 9. The liquid inlet pipe 2, the liquid outlet pipe 3, and the liquid replenishing pipe 4 are all communicated with the box body 1. The heating sheet 5 is arranged on the outer surface of the box body 1. A box opening 10 is provided at the upper end of the box body 1. The pressure stabilizing cover 6 is arranged at the box opening 10. The pressure stabilizing cover 6 includes: a cover body 61 and a pressure stabilizing valve. The cover body 61 is provided with a gas passage 610. The pressure stabilizing valve is located in the gas passage 610. At least a part of the liquid level switch 7 and at least a part of the temperature sensor 8 are both located inside the box body 1. The filter screen 9 is located inside the liquid inlet pipe 2.

[0019] During operation, the coolant of the liquid cooling device is input into the box body 1 through the liquid inlet pipe 2 and output through the liquid outlet pipe 3, thereby forming a cycle outside. Among them, the pressure stabilizing cover 6 is used to play a role in stabilizing the pressure inside the box body 1. Specifically, when the air pressure inside the box body 1 is too high or too low, the pressure stabilizing valve of the pressure stabilizing cover 6 opens, so that the inside of the box body 1 is communicated with the outside air through the gas passage 610, thereby achieving the pressure stabilizing effect; the temperature sensor 8 is used to detect the temperature of the coolant. When the temperature of the coolant is too low, the heating sheet 5 starts to heat, thereby increasing the temperature of the coolant; the liquid level switch 7 is used to detect the liquid volume inside the box body 1. When the liquid volume is too low, coolant is input into the box body 1 through the liquid replenishing pipe 4; the filter screen 9 is used to filter impurities in the coolant.

[0020] It is worth mentioning that although the box opening 10 is arranged on the upper wall of the box body 1 in this embodiment, in other embodiments, the box opening 10 can also be arranged on the side wall of the box body 1, as long as it is arranged at a position higher than the normal liquid level. In addition, in this embodiment, both the liquid level switch 7 and the temperature sensor 8 pass through the upper wall of the box body 1.

[0021] It is worth mentioning that although the box body 1 is cylindrical in this embodiment, in other embodiments, the box body 1 can also be of other shapes, such as prismatic.

[0022] It is worth mentioning that although in this embodiment, the liquid inlet pipe 2, the liquid outlet pipe 3, and the liquid replenishing pipe 4 are all connected to the lower wall of the box body 1, in other embodiments, the liquid inlet pipe 2, the liquid outlet pipe 3, and the liquid replenishing pipe 4 can also be connected to the side wall of the box body 1.

[0023] As a preferred solution, there are multiple heating sheets 5, and the multiple heating sheets 5 are evenly arranged around the box body 1. In this embodiment, the multiple heating sheets 5 are arranged in a 360° circular array.

[0024] Specifically, as Figure 3 shown, the pressure stabilizing valve includes: a valve sleeve 62, a valve core 63, a first spring 64, and a second spring 65. The two ends of the first spring 64 are respectively abutted against the cover body 61 and the valve sleeve 62 to provide a force for blocking the gas passage 610 to the valve sleeve 62. The valve sleeve 62 is provided with an air hole 620. The two ends of the second spring 65 are respectively abutted against the valve sleeve 62 and the valve core 63 to provide a force for blocking the air hole 620 to the valve core 63. When the air pressure inside the box body 1 is too high, the internal air pressure resists the force of the first spring 64, causing the valve sleeve 62 to move upward and no longer block the gas passage 610. The gas inside the box body 1 is output to the outside through the gas passage 610 until the air pressure returns to normal, at which time the valve sleeve 62 moves downward and re-blocks the gas passage 610; when the air pressure inside the box body 1 is too low, the external air pressure resists the elastic force of the second spring 65, causing the valve core 63 to move downward and no longer block the air hole 620. The gas outside the box body 1 is input into the inside through the gas passage 610 and the air hole 620 until the air pressure returns to normal, at which time the valve core 63 moves upward and re-blocks the air hole 620.

[0025] In this embodiment, the gas passage 610 is provided with a step, and the valve sleeve 62 contacts the step of the gas passage 610 under the action of the first spring 64, thereby blocking the gas passage 610.

[0026] More specifically, the valve core 63 includes: a rod body 631, a pressing plate 632, and a sealing cover 633. The pressing plate 632 and the sealing cover 633 are both fixed to the rod body 631. The two ends of the second spring 65 are respectively abutted against the valve sleeve 62 and the pressing plate 632. The rod body 631 passes through the air hole 620, and the sealing cover 633 is in close contact with a surface of the valve core 63 facing away from the second spring 65 under the action of the second spring 65. When the air pressure inside the box body 1 is normal, the sealing cover 633 blocks the air hole 620 by being in close contact with the valve core 63; when the air pressure inside the box body 1 is too low, the pressure of the external air pressure resists the force of the second spring 65, and the entire valve core 63 moves downward. The pressing plate 632 presses the second spring 65 downward, and the sealing cover 633 is no longer in close contact with the valve core 63, thereby opening the air hole 620 until the air pressure returns to normal, at which time the sealing cover 633 re-blocks the air hole 620.

[0027] Specifically, in this embodiment, the sealing cover 633 contacts the lower surface of the valve core 63 under the action of the second spring 65. Of course, in addition to using the sealing cover 633, in other embodiments, a traditional plug can also be used to replace the sealing cover 633, and the plug directly blocks the air hole 620 under the action of the second spring 65.

Claims

1. An expansion water tank for a liquid cooling device, comprising: A box body, a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are both connected to the box body, characterized in that: the expansion water tank also includes: a liquid filling pipe, a heating plate, a pressure stabilizing cover, a liquid level switch and a temperature sensor, the liquid filling pipe is also connected to the box body, the heating plate is arranged on the outer surface of the box body, the upper end of the box body is provided with a box port, the pressure stabilizing cover is arranged at the box port, the pressure stabilizing cover includes: a cover body and a pressure stabilizing valve, the cover body is provided with a gas channel, the pressure stabilizing valve is located in the gas channel, at least a part of the liquid level switch and at least a part of the temperature sensor are both located inside the box body.

2. The expansion water tank of the liquid cooling device according to claim 1, characterized in that: The pressure-stabilizing valve includes: a valve sleeve, a valve core, a first spring and a second spring, the two ends of the first spring respectively abut against the cover body and the valve sleeve to provide a force to the valve sleeve to block the gas channel, the valve sleeve is provided with an air hole, and the two ends of the second spring respectively abut against the valve sleeve and the valve core to provide a force to the valve core to block the air hole.

3. The expansion water tank of the liquid cooling device according to claim 2, characterized in that: The valve core includes: a rod body, a pressure plate and a sealing cover, the pressure plate and the sealing cover are fixed to the rod body, the two ends of the second spring are respectively abutted against the valve sleeve and the pressure plate, the rod body passes through the air hole, and the sealing cover is in close contact with a surface of the valve core facing away from the second spring under the action of the second spring.

4. The expansion water tank of the liquid cooling device according to claim 1, characterized in that: The box opening is arranged on the upper wall of the box body, and the liquid level switch and the temperature sensor both pass through the upper wall of the box body.

5. The expansion water tank of the liquid cooling device according to claim 1, characterized in that: There are multiple heating plates, which are evenly arranged around the box.

6. The expansion water tank of the liquid cooling device according to claim 1, characterized in that: The expansion water tank further comprises: a filter screen, which is located inside the liquid inlet pipe.

Images