Energy-saving and environment-friendly automobile expansion tank
By installing a pressure relief hole and a movable ring structure on the filling pipe of the car's expansion tank, the problem of burns caused by high-temperature and high-pressure gas injection is solved, and a safe filling process is achieved.
Patent Information
- Application Number
- CN202520506598.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Existing automotive expansion tanks have poor safety features. During the refilling process while the vehicle is parked, high-temperature and high-pressure gas can be ejected the moment the cap is opened, causing burns to the operator.
An energy-saving and environmentally friendly automotive expansion tank was designed. By setting a combination of pressure relief hole, movable ring, sealing ring and elastic element on the filling pipe, the movable ring is pushed by air pressure to slide and release the pressure relief hole. High-pressure gas is discharged through the pressure relief hole, avoiding direct spraying to the user's hands.
It prevents high-temperature, high-pressure gas from spraying onto the operator's hands during the filling process, improving safety and preventing burns.
Smart Images
Figure CN223839226U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive expansion tank technology, specifically to an energy-saving and environmentally friendly automotive expansion tank. Background Technology
[0002] An expansion tank is a crucial component of a car's cooling system. Also known as an expansion vessel or compensating coolant tank, it's a device that removes excess air and compensates for changes in coolant volume. Its core functions include pressure regulation and volume compensation. Pressure regulation: The expansion tank collects superheated steam generated during coolant circulation, releasing excess pressure to maintain stable cooling system pressure and prevent engine overheating or damage due to excessive pressure. Volume compensation: Utilizing the thermal expansion and contraction properties of coolant, the expansion tank stores coolant that expands at high temperatures and replenishes coolant that contracts at low temperatures, thus maintaining stable cooling system capacity.
[0003] Existing expansion tanks do not have scald protection. When a vehicle has been stopped for a short time, the temperature and pressure inside the expansion tank are still relatively high. If the operator opens the cap to add water to the expansion tank at this time, high-temperature and high-pressure gas will spray into the vicinity of the operator's hands the moment the cap is opened, which can easily cause the operator to be scalded, resulting in poor safety. Utility Model Content
[0004] The purpose of this utility model is to provide an energy-saving and environmentally friendly automotive expansion tank, which solves the problem in the prior art that high-temperature and high-pressure gas will spray onto the operator's hands the moment the cap is opened during the refueling process while the vehicle is parked, causing injury to the operator.
[0005] This utility model provides the following technical solution: an energy-saving and environmentally friendly automotive expansion tank, comprising an expansion tank, a filling pipe fixedly connected to the outer wall of the expansion tank, a filling cap threadedly connected to the end of the filling pipe away from the expansion tank, a pressure relief hole provided on the outer wall of the filling pipe, a fixing block fixedly installed on the inner wall of the pressure relief hole, an elastic element fixedly installed on the outer wall of the fixing block, a movable ring fixedly connected to the end of the elastic element away from the fixing block, a sealing ring fixedly sleeved on the outer wall of the movable ring, and the outer wall of the sealing ring movably connected to the inner wall of the filling pipe.
[0006] As a preferred embodiment of the above technical solution, an inner cover is threaded onto the inner wall of the movable ring, and a protrusion is fixedly installed on the inner wall of the inner cover. The side of the protrusion away from the inner cover is movably connected to the inner wall of the filling cap.
[0007] The above technical solution, through the cooperation of the inner cover and the protrusion, can seal and limit the movement of the ring.
[0008] As a preferred embodiment of the above technical solution, a sliding rod is fixedly connected to the side of the movable ring near the fixed block, the outer wall of the sliding rod is slidably connected to the inner wall of the fixed block, and a limit block is fixedly connected to the end of the sliding rod away from the movable ring.
[0009] The above technical solution, through the design of the limiting block, can limit the extension of the movable ring.
[0010] As a preferred embodiment of the above technical solution, a limiting sleeve is fixedly sleeved on the outer wall of the sliding rod, and the side of the limiting sleeve away from the movable ring is movably connected to the outer wall of the fixed block.
[0011] The above technical solution, through the design of the limiting sleeve, can limit the reset of the moving ring.
[0012] As a preferred embodiment of the above technical solution, a reinforcing rib is fixedly connected to the outer wall of the expansion tank, the thickness of the expansion tank is set to 4mm, and the thickness of the reinforcing rib is set to 3mm.
[0013] The above technical solution, through the design of reinforcing ribs, enhances the overall strength of the expansion tank.
[0014] As a preferred embodiment of the above technical solution, a water level sensor is fixedly installed on the expansion tank, a connecting pipe is fixedly connected to the outer wall of the expansion tank, and raised markings are provided on the outer wall of the expansion tank.
[0015] The above technical solution, through the design of raised markings, allows for the marking of production information for expansion tanks.
[0016] As a preferred embodiment of the above technical solution, an installation block is fixedly connected to the outer wall of the expansion tank and the reinforcing rib, and an installation hole is opened on the outer wall of the installation block, and an aluminum alloy washer is fixedly connected to the inner wall of the installation hole.
[0017] The above technical solution, through the design of aluminum alloy washers, can improve the strength of the mounting holes on the mounting block.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] This invention utilizes an integrated design of the filling tube and filling cap. After the filling cap is removed, the restriction on the inner cap is released. Subsequently, the air pressure inside the expansion tank pushes the movable ring to slide away from the expansion tank, causing the sealing ring to release the pressure relief hole. The high-pressure gas inside the expansion tank then passes through the pressure relief hole and is output from the side of the filling tube, preventing the gas from being directly sprayed onto the user's hands. This achieves the function of preventing burns and significantly improves the safety of this structure during use. Attached Figure Description
[0020] Figure 1 This is a perspective view of the present utility model;
[0021] Figure 2 This is a schematic diagram of the bottom structure of this utility model;
[0022] Figure 3 This is a front structural diagram of the present invention;
[0023] Figure 4 for Figure 3 Enlarged structural diagram at point A;
[0024] Figure 5 This is a schematic diagram showing the distribution and structure of the pressure relief holes in this utility model;
[0025] Figure 6 This is a partial cross-sectional structural diagram of the filling tube of this utility model.
[0026] In the diagram: 1. Expansion tank; 11. Raised mark; 2. Reinforcing rib; 3. Water level sensor; 4. Connecting pipe port; 5. Mounting block; 6. Filling pipe; 61. Pressure relief hole; 62. Fixing block; 63. Elastic element; 64. Moving ring; 65. Sealing ring; 66. Sliding rod; 67. Limiting sleeve; 68. Limiting block; 69. Inner cover; 691. Raised block; 7. Filling cap. Detailed Implementation
[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0028] like Figures 1-6As shown, this utility model provides a technical solution: an energy-saving and environmentally friendly automotive expansion tank, including an expansion tank 1, a filling pipe 6 fixedly connected to the outer wall of the expansion tank 1, a filling cap 7 threadedly connected to the end of the filling pipe 6 away from the expansion tank 1, a pressure relief hole 61 opened on the outer wall of the filling pipe 6, a fixing block 62 fixedly installed on the inner wall of the pressure relief hole 61, an elastic element 63 fixedly installed on the outer wall of the fixing block 62, a movable ring 64 fixedly connected to the end of the elastic element 63 away from the fixing block 62, and a sealing ring 65 fixedly sleeved on the outer wall of the movable ring 64. The outer wall of the sealing ring 65 is movably connected to the inner wall of the filling pipe 6. An inner cover 69 is threaded onto the inner wall of the movable ring 64. A protrusion 691 is fixedly installed on the inner wall of the inner cover 69. The side of the protrusion 691 away from the inner cover 69 is movably connected to the inner wall of the filling cap 7. A sliding rod 66 is fixedly connected to the side of the movable ring 64 near the fixed block 62. The outer wall of the sliding rod 66 is slidably connected to the inner wall of the fixed block 62. A limit block 68 is fixedly connected to the end of the sliding rod 66 away from the movable ring 64. A limit sleeve 67 is fixedly sleeved on the outer wall of the sliding rod 66. The side away from the movable ring 64 is movably connected to the outer wall of the fixed block 62. In the initial state, the filling cap 7 will limit the inner cap 69 and the movable ring 64 as a whole through the protrusion 691. When the temperature inside the expansion tank 1 has not dropped effectively, after the filling cap 7 is removed from the filling pipe 6, the air pressure inside the expansion tank 1 will push the movable ring 64 to slide away from the expansion tank 1, causing the sealing ring 65 to release the sealing state of the pressure relief hole 61. The high-pressure gas inside the expansion tank 1 then passes through the pressure relief hole 61 and flows out from the side of the filling pipe 6. The output avoids the problem of gas being directly sprayed onto the user's hands, thus achieving the function of preventing burns. When the movable ring 64 moves, it stretches the elastic element 63. After the gas inside the expansion tank 1 is discharged, the elastic element 63 will be reset by the reset force of the elastic element 63, so that the sealing ring 65 re-closes the pressure relief hole 61. Then the protrusion block 691 can be removed, and the inside of the expansion tank 1 can be filled. The limiting sleeve 67 and the limiting block 68 limit the reset and extension positions of the sliding rod 66, respectively, to facilitate the use of this structure.
[0029] As one implementation method in this embodiment, such as Figures 1-4As shown, a reinforcing rib 2 is fixedly connected to the outer wall of the expansion tank 1. The thickness of the expansion tank 1 is 4mm, and the thickness of the reinforcing rib 2 is 3mm. A water level sensor 3 is fixedly installed on the expansion tank 1. A connecting pipe port 4 is fixedly connected to the outer wall of the expansion tank 1. A raised mark 11 is provided on the outer wall of the expansion tank 1. A mounting block 5 is fixedly connected to the outer wall of the expansion tank 1 and the reinforcing rib 2. A mounting hole is opened on the outer wall of the mounting block 5, and an aluminum alloy washer is fixedly connected to the inner wall of the mounting hole. Through the design of the reinforcing rib 2, the overall strength of the expansion tank 1 can be improved. The design of the position sensor 3 allows for monitoring of the liquid level inside the expansion tank 1, facilitating timely refilling by the user. The design of the aluminum alloy gasket enhances the wear resistance and strength of the connection point of the mounting block 5, increasing the stability of the structure during installation. During installation, the structure can be installed in the engine room from the mounting block 5. The design of the raised mark 11 indicates the production information of the expansion tank 1, making it easy for maintenance personnel to quickly identify. The top number indicates the year, the number below it indicates the month, the two sets of numbers below that indicate the specific date, and the bottom number indicates the version number.
[0030] Working principle: During installation, the structure is installed in the engine compartment through the mounting hole via bolts from mounting block 5. Then, the end of the connecting pipe 4 is connected to the vehicle's cooling system, and the water level sensor 3 is connected to the vehicle's computer. The expansion tank 1 can then be used normally. When adding water to the expansion tank 1, if the internal temperature of the expansion tank 1 does not drop effectively, the filling cap 7 is removed from the filling pipe 6. The air pressure inside the expansion tank 1 will push the movable ring 64 to slide away from the expansion tank 1, causing... When the sealing ring 65 releases its seal on the pressure relief hole 61, the high-pressure gas inside the expansion tank 1 passes through the pressure relief hole 61 and is output from the side of the filling pipe 6, thereby achieving the function of preventing scalding. After the gas inside the expansion tank 1 is released, the elastic element 63 will be reset by the reset force of the elastic element 63, so that the sealing ring 65 re-closes the pressure relief hole 61. Then, the protrusion 691 can be removed, and the inside of the expansion tank 1 can be filled. After filling, the inner cover 69 and the filling cover 7 can be reset.
[0031] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. An energy-saving and environmentally friendly automotive expansion tank, characterized in that: The device includes an expansion tank (1), a filling pipe (6) is fixedly connected to the outer wall of the expansion tank (1), a filling cap (7) is threadedly connected to the end of the filling pipe (6) away from the expansion tank (1), a pressure relief hole (61) is provided on the outer wall of the filling pipe (6), a fixing block (62) is fixedly installed on the inner wall of the pressure relief hole (61), an elastic element (63) is fixedly installed on the outer wall of the fixing block (62), a movable ring (64) is fixedly connected to the end of the elastic element (63) away from the fixing block (62), a sealing ring (65) is fixedly sleeved on the outer wall of the movable ring (64), and the outer wall of the sealing ring (65) is movably connected to the inner wall of the filling pipe (6).
2. The energy-saving and environmentally friendly automotive expansion tank according to claim 1, characterized in that: The inner wall of the movable ring (64) is threaded with an inner cover (69), and a protrusion (691) is fixedly installed on the inner wall of the inner cover (69). The side of the protrusion (691) away from the inner cover (69) is movably connected to the inner wall of the filling cap (7).
3. The energy-saving and environmentally friendly automotive expansion tank according to claim 2, characterized in that: A sliding rod (66) is fixedly connected to the side of the movable ring (64) near the fixed block (62). The outer wall of the sliding rod (66) is slidably connected to the inner wall of the fixed block (62). A limit block (68) is fixedly connected to the end of the sliding rod (66) away from the movable ring (64).
4. The energy-saving and environmentally friendly automotive expansion tank according to claim 3, characterized in that: A limiting sleeve (67) is fixedly sleeved on the outer wall of the sliding rod (66), and the side of the limiting sleeve (67) away from the movable ring (64) is movably connected to the outer wall of the fixed block (62).
5. The energy-saving and environmentally friendly automotive expansion tank according to claim 1, characterized in that: The expansion tank (1) is fixedly connected to a reinforcing rib (2) on its outer wall. The thickness of the expansion tank (1) is set to 4mm, and the thickness of the reinforcing rib (2) is set to 3mm.
6. The energy-saving and environmentally friendly automotive expansion tank according to claim 1, characterized in that: A water level sensor (3) is fixedly installed on the expansion tank (1), a connecting pipe (4) is fixedly connected to the outer wall of the expansion tank (1), and a raised mark (11) is provided on the outer wall of the expansion tank (1).
7. The energy-saving and environmentally friendly automotive expansion tank according to claim 1, characterized in that: An installation block (5) is fixedly connected to the outer wall of the expansion tank (1) and the reinforcing rib (2). An installation hole is provided on the outer wall of the installation block (5), and an aluminum alloy washer is fixedly connected to the inner wall of the installation hole.