Filling device

Abstract

The utility model provides a filling device which comprises a vacuum pump connected with a system to be filled through a first pipeline and used for vacuumizing the system to be filled; the liquid storage tank is used for storing functional liquid; the pressurizing tank is used for pressurizing the internal functional liquid; the air valve is communicated with the pressurizing tank through a pipeline and used for being connected with an air pump. The pipeline is vacuumized through the vacuum pump, the pressurizing tank is pressurized through the air pump, and filling of a filled system is completed. According to the filling device, filling in the dry type part state and the wet type part state can be achieved, the filling device adapts to various scenes, the flexibility is high, the bubble-free filling requirement of a filled system can be met, and meanwhile the cost is reduced.

Description

Technical Field

[0001] This application belongs to the field of functional fluid filling technology, and particularly relates to a filling device. Background Technology

[0002] The automotive industry is currently developing towards electrification and intelligence, and the demand for new energy vehicles is increasing. In the process of vehicle electrification, there are demands for intelligent vehicle control. Integrated braking control systems have become one of the important solutions to meet these demands. To ensure the braking performance and safety of the vehicle, the correct filling of brake fluid in the braking control system is required, ensuring that no air bubbles are introduced into the brake fluid. This places requirements on the filling of the braking control system.

[0003] Existing filling devices, such as those for integrated brake control systems, suffer from high instrument costs and are not suitable for various scenarios in order to achieve bubble-free filling. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a filling device that can achieve bubble-free filling of the system being filled, such as bubble-free filling of brake fluid in an integrated brake control system, ensuring vehicle braking performance and safety, and can be adapted to various scenarios at a low cost.

[0005] To achieve the above effects, this utility model adopts the following technical solution: This application provides a filling device, including a vacuum pump, a liquid storage tank, a pressurizing tank, and a gas valve. The vacuum pump is connected to the filling system through a first pipeline and is used to perform vacuum treatment on the filling system; the liquid storage tank is used to store the functional liquid; the pressurizing tank includes a first end, a second end, and a third end. The first end of the pressurizing tank is connected to the liquid storage tank through a second pipeline, the second end of the pressurizing tank is connected to the gas pump through a third pipeline, and the third end of the pressurizing tank is connected to the first pipeline through a fourth pipeline; the gas valve is disposed on the third pipeline.

[0006] Preferably, the refueling device further includes a first pneumatic control valve, which is installed on the first pipeline and located on the side close to the refueling system.

[0007] Preferably, the filling device further includes a second pneumatic control valve located on the fifth pipeline, wherein one end of the fifth pipeline is located between the first pneumatic control valve and the vacuum pump, and the other end of the fifth pipeline is connected to the filling system.

[0008] Preferably, the filling device also includes a three-way valve, the three ends of which are connected to the functional liquid reservoir, the fifth pipeline, and the first pipeline of the filling system, respectively.

[0009] Preferably, the filling device also includes a vacuum pressure gauge, which is installed on the first pipeline and located on the side near the vacuum pump.

[0010] Preferably, the filling device further includes a buffer tank and a sixth pipeline. The buffer tank is installed on the first pipeline, located between the vacuum pressure gauge and the vacuum pump, and the gravity position of the buffer tank is lower than that of the vacuum pump. Both ends of the sixth pipeline are connected to the first pipeline through a three-way connector, with one end located on the buffer tank near the filling system and the other end located on the buffer tank near the vacuum pump.

[0011] Preferably, the filling device also includes a drain valve, which is connected to the bottom of the buffer tank.

[0012] Preferably, the filling device further includes a sixth pipeline, both ends of which are connected to the first pipeline via a three-way connector. One end is located on the buffer tank side near the filling system, and the other end is located on the buffer tank side near the vacuum pump.

[0013] Preferably, at least one of the first, second, third, fourth, fifth, and sixth pipelines of the filling device is a transparent pipeline.

[0014] Preferably, the vacuum pump has a liquid buffer mechanism inside.

[0015] The filling device provided by this utility model can achieve bubble-free filling of the system being filled, such as bubble-free filling of brake fluid in an integrated brake control system, ensuring vehicle braking performance and safety, and can adapt to various scenarios and reduce costs.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the specific embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an example of the present utility model.

[0018] Among them, A-the filling system, 10a-the first pipeline, 10b-the fifth pipeline, 10c-the sixth pipeline, 11a-the first pneumatic control valve, 11b-the second pneumatic control valve, 12-vacuum pressure gauge, 13-buffer tank, 14a-oil drain valve, 14b-oil drain pipe, 15-vacuum pump, 16-air valve, 17-liquid storage tank, 18-pressurization tank, 19-the third pipeline, 20-the second pipeline, 21-the fourth pipeline. Detailed Implementation

[0019] To facilitate understanding of this application, a more comprehensive description of this application will be provided below with reference to the accompanying drawings. Specific embodiments of this application are shown in the drawings, and a detailed description of this application is provided below in conjunction with the following drawings and examples.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention. The filling device includes a vacuum pump 15, a liquid storage tank 17, a pressurizing tank 18, and a gas valve 16. The vacuum pump 15 is connected to the filling system A via a first pipeline 10a and is used to evacuate the filling system A. The liquid storage tank 17 is used to store the functional liquid. The pressurizing tank 18 includes a first end, a second end, and a third end. The first end of the pressurizing tank 18 is connected to the liquid storage tank 17 via a second pipeline 20. The second end of the pressurizing tank 18 is connected to a gas pump (not shown) via a third pipeline 19. The third end of the pressurizing tank 18 is connected to the first pipeline 10a via a fourth pipeline 21. The gas valve 16 is disposed on the third pipeline 19, wherein the gas valve 16 can be used to connect the gas pump; the connected gas pump can pressurize the pressurizing tank 18 through the gas valve 16 and the third pipeline 19.

[0021] Specifically, in one embodiment, since the present application can generate positive pressure inside the pressurization tank 18 using an air pump, there is no need to install an additional pressurization assist device inside the pressurization tank 18. In addition, the liquid storage tank 17 does not need to be pressurized and is only used to store functional liquid, so the liquid storage tank 17 can be made of non-pressure resistant material to further save on the hardware cost of the device.

[0022] In one embodiment, the refueling device further includes a first pneumatic control valve 11a, which is installed on the side of the first pipeline near the refueling system A, and is used to control whether the pipeline on the side of the first pipeline 10a near the refueling system A is connected to other parts of the first pipeline 10a. The refueling device also includes a second pneumatic control valve 11b, which is located on the fifth pipeline 10b; wherein one end of the fifth pipeline 11b is located between the first pneumatic control valve 11a and the vacuum pump 15, and the other end is connected to the refueling system A.

[0023] Specifically, in one embodiment, the first pneumatic control valve 11a and the second pneumatic control valve 11b can be switched on and off synchronously, thereby controlling the connection and disconnection between the filling system A and the vacuum pump. In other embodiments, the first pneumatic control valve 11a and the second pneumatic control valve 11b can be switched on and off asynchronously.

[0024] In one embodiment, the filling device includes a three-way connector. Both ends of the fifth pipeline 10b are connected by the three-way connector. One end is connected to the first pipeline 10a and the functional liquid reservoir of the filling system A by the three-way connector. The other end is connected to the first air control valve 11a of the first pipeline 10a near the vacuum pump 15 by the three-way connector.

[0025] In one embodiment, the filling device includes a vacuum gauge 12 installed on the first pipeline 10a to detect the vacuum level in the first pipeline 10a. In vacuum filling cases where a vacuum level requirement exists, the vacuum level of the pipeline inside the filling device can be determined by the vacuum gauge 12.

[0026] In one embodiment, the filling device includes a buffer tank 13, which is installed on the first pipeline 10a, located between the vacuum pressure gauge 12 and the vacuum pump 15, and the gravity position of the buffer tank 13 is lower than that of the vacuum pump 15.

[0027] In one embodiment, the vacuum pump 15 has a liquid buffer mechanism inside to prevent damage caused by the intake of functional liquid. Specifically, when the filling device fills the filling system A in a wet state, the vacuum pump 15 will extract the old functional liquid inside the filling system A, and the extracted old functional liquid will be collected through the buffer tank 13. Furthermore, the gravitational position of the buffer tank 13 can be lower than that of the vacuum pump 15, meaning the gravitational potential energy of the buffer tank 13 is lower than that of the vacuum pump 15. The functional liquid inside the buffer mechanism of the vacuum pump 15 will spontaneously flow to the buffer tank 13 under gravity when stationary. Some functional liquid may enter the buffer mechanism of the vacuum pump 15 due to vacuuming. After vacuuming is completed, the functional liquid that enters the buffer mechanism will fall back into the buffer tank 13 by gravity through the first pipe 10a. This is to recover the residual functional liquid that entered the buffer mechanism of the vacuum pump 15 and the first pipe 10a connecting the vacuum pump 15 and the buffer tank 13, so as to ensure the performance of the vacuum pump 15 during subsequent filling, avoid excessive accumulation of functional liquid in the buffer mechanism of the vacuum pump 15, and reduce damage to the vacuum pump 15.

[0028] In one embodiment, the filling device includes a drain valve 14a, which is installed at the bottom of the buffer tank 13. The bottom of the drain valve 14a is connected to a drain pipe 14b. After the filling process is completed, the device is left to stand and wait for the functional liquid to flow into the buffer tank 13. After the buffer tank has collected the liquid, the drain valve 14a can be opened to discharge the functional liquid collected in the buffer tank 13.

[0029] In one embodiment, the filling device includes a sixth pipeline 10c, both ends of which are connected to the first pipeline 10a via a three-way connector. One end is located on the buffer tank 13 near the filling system A, and the other end is located on the buffer tank near the vacuum pump 15. The sixth pipeline is connected to the first pipeline 10a in parallel with the buffer tank 13. The sixth pipeline 10c is used to divert the flow of the first pipeline 10a during the vacuuming process to improve the vacuuming efficiency.

[0030] In one embodiment, at least one of the first pipe 10a, the second pipe 20, the third pipe 19, the fourth pipe 21, the fifth pipe 10b, and the sixth pipe 10c in the filling device is a transparent pipe, so that the user can observe the internal condition of the pipe and check whether air bubbles have accidentally entered the filling system A, thereby ensuring the filling quality.

[0031] In one embodiment, the filling device can fill the system A in either a dry state or a wet state. A dry state means that there is no residual functional fluid in the system A; in this state, the filling device can directly fill the system. A wet state means that there is residual functional fluid inside the system A. In this state, the filling device needs to replace the residual functional fluid while filling the system. Since the condition of the functional fluid inside the system is unknown, the residual functional fluid may contain air bubbles, and there may also be gas in the filling device's piping. Therefore, the replaced functional fluid needs to be separated into gas and liquid components for subsequent recovery.

[0032] The filling procedure for dry components is as follows:

[0033] Step 1: The first pneumatic control valve 10a and the second pneumatic control valve 10b are in the closed state by default. The air pump is sealed to the air valve 16, and the air valve 16 and the drain valve 14a are closed to maintain the seal inside the filling device. After the filling device is connected to the filling system A, the first pneumatic control valve 10a and / or the second pneumatic control valve 10b are opened to connect the vacuum pump 15 to the filling system A, while keeping the air valve 16 and the drain valve 14a in the closed state.

[0034] Step 2: Vacuum pump 15 starts to evacuate the pipe to achieve the specified vacuum level, preferably 2 mbar. The vacuum level is determined by vacuum pressure gauge 12, and the pipe is kept under this vacuum for a specified time, preferably 90 seconds.

[0035] The internal pipelines of the filling device may contain residual functional liquid and gas. During the vacuuming process, the residual functional liquid and gas in the first pipeline 10a will flow to the vacuum pump 15 through the buffer tank 15 or the sixth pipeline 10c. When residual functional liquid passes through the buffer tank 13, it will be separated into gas and liquid and collected in the buffer tank 13. When residual functional liquid enters the vacuum pump 15 through the sixth pipeline 10c, it will be separated into gas and liquid and collected in the internal buffer mechanism of the vacuum pump 15. After the vacuuming step is completed, the functional liquid collected in the buffer mechanism of the vacuum pump 15 will fall into the buffer tank 13 through the first pipeline 10a according to gravity. The gas separated in the process will be directly discharged into the atmosphere by the vacuum pump 15.

[0036] Step 3: Turn off the vacuum pump 15 and start the air pump to pressurize the pressurization tank 18 to the specified pressure, preferably 0.1 mbar, and maintain this pressure for the specified time, preferably 40 seconds. After the specified pressurization time is reached, the filling is completed.

[0037] After refueling is completed, the first pneumatic control valve 11a and the second pneumatic control valve 11b are closed to isolate the refueling system A from the refueling device, so as to prevent the refueling status of the refueling system A from being affected by the pressure changes inside the refueling device.

[0038] The filling process for wet parts is the same as that for dry parts, but an additional step is required after filling:

[0039] Step 4: Let the functional liquid in each pipeline of the filling device flow into the buffer tank 13 while standing still. Open the drain valve 14a to allow the functional liquid collected in the buffer tank 13 to be discharged through the drain valve 14a and the drain pipe 14b.

[0040] When the functional fluid inside the buffer tank 13 is completely drained, the drain valve 14a is closed to restore the sealing of the filling device and restore the filling device to its default state, which facilitates subsequent filling.

[0041] This utility model provides a filling device that can be used to fill functional fluids in a system, such as brake fluid in an integrated brake control system. It can ensure bubble-free filling of the integrated brake control system, adapt to various scenarios, and reduce costs.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A dispensing device, characterized in that, The device includes: A vacuum pump, connected to the system to be refueled via a first pipeline, is used to perform vacuuming on the system to be refueled. Storage tanks are used to store functional liquids; A pressurizing tank includes a first end, a second end, and a third end. The first end of the pressurizing tank is connected to the liquid storage tank through a second pipeline. The second end of the pressurizing tank is connected to an air pump through a third pipeline. The third end of the pressurizing tank is connected to the first pipeline through a fourth pipeline. An air valve is provided on the third pipeline.

2. The apparatus as described in claim 1, characterized in that: The refueling device also includes a first pneumatic control valve, which is installed on the first pipeline and located on the side close to the refueling system.

3. The apparatus as described in claim 2, characterized in that: The filling device further includes a second pneumatic control valve and a fifth pipeline. The second pneumatic control valve is located on the fifth pipeline. One end of the fifth pipeline is located between the first pneumatic control valve and the vacuum pump, and the other end of the fifth pipeline is connected to the filling system.

4. The apparatus as described in claim 3, characterized in that, The filling device also includes a three-way valve, the three ends of which are respectively connected to the functional liquid reservoir of the filling system, the fifth pipeline and the first pipeline.

5. The apparatus as claimed in claim 1, characterized in that: The filling device also includes a vacuum pressure gauge, which is installed on the first pipeline and located on the side near the vacuum pump.

6. The apparatus as described in claim 5, characterized in that: The filling device also includes a buffer tank, which is installed on the first pipeline, located between the vacuum pressure gauge and the vacuum pump, and the gravity position of the buffer tank is lower than that of the vacuum pump.

7. The apparatus as claimed in claim 6, characterized in that: The filling device also includes an oil drain valve, which is connected to the bottom of the buffer tank.

8. The apparatus as described in claim 6, characterized in that: The filling device also includes a sixth pipeline, both ends of which are connected to the first pipeline via a three-way connector. One end of the sixth pipeline is located on the side of the buffer tank closest to the filling system, and the other end is located on the side of the buffer tank closest to the vacuum pump.

9. The apparatus as described in claim 3 or 8, characterized in that: At least one of the first, second, third, fourth, fifth, and sixth pipelines of the filling device is a transparent pipeline.

10. The apparatus as claimed in claim 1, characterized in that: The vacuum pump is equipped with a liquid buffer mechanism.

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