Expansion water tank, cooling system and vehicle
By using a partition to separate the liquid chamber and the expansion chamber in the expansion tank and using a pressure cap to control the connection, the problem of arranging the expansion tank in a compact space is solved, a design with smaller footprint is achieved, and the space utilization rate of commercial vehicles is improved.
Patent Information
- Application Number
- CN202422513949.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-16
AI Technical Summary
Existing expansion water tanks are difficult to meet the use requirements in areas with compact space layout or narrow upper and lower spaces, especially in vehicles, especially commercial vehicles, and cannot meet the condition of not sucking air at extreme tilt angles.
An expansion water tank is designed. A partition is used to separate the interior of the shell into a liquid chamber and an expansion chamber. The two are arranged vertically and connected by a pressure cover and a connecting pipe to achieve pressure control of the liquid chamber and the expansion chamber. The pressure cover opens or closes the connection according to the pressure in the liquid chamber, reducing the space occupied above and below.
By arranging the expansion chamber and the liquid chamber horizontally, the upper and lower space occupied by the expansion tank is reduced, meeting the demand for compact upper and lower space, and improving the applicability of the expansion tank and the space utilization of the vehicle.
Smart Images
Figure CN223305834U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of commercial vehicles, in particular to an expansion water tank, a cooling system and a vehicle. Background Art
[0002] As the engine power of commercial vehicles continues to increase, the demand for the heat dissipation power of the vehicle cooling system is also increasing. Due to its performance, expansion tanks are increasingly used in cooling systems.
[0003] Currently, expansion tanks typically consist of stacked expansion, storage, and residual chambers, each requiring a specific volume to meet functional requirements. To prevent the vehicle from inhaling air at extreme tilt angles, the expansion tank must be positioned high. This typically requires a design with relatively large upper and lower chamber dimensions. However, in applications with compact layouts or limited upper and lower clearances, current expansion tanks struggle to meet these requirements. Utility Model Content
[0004] The utility model provides an expansion water tank, a cooling system and a vehicle, which can meet the use demand of compact upper and lower arrangement space.
[0005] In a first aspect, the utility model provides an expansion water tank, comprising:
[0006] A housing, comprising a bottom housing and an upper cover, wherein the upper cover is covered on the bottom housing to form a receiving cavity;
[0007] a partition disposed inside the accommodating cavity, the partition being used to separate the accommodating cavity into a liquid cavity and an expansion cavity that are independent of each other, a connecting pipe being provided between the liquid cavity and the expansion cavity, wherein an arrangement direction of the liquid cavity and the expansion cavity is perpendicular to an arrangement direction of the bottom shell and the upper cover;
[0008] A pressure cover is provided on the upper cover and communicates with the liquid cavity. One end of the communicating tube is connected to the pressure cover, and the other end of the communicating tube is located in the expansion cavity. The pressure cover is used to open or close according to the pressure in the liquid cavity so that the liquid cavity is connected to or disconnected from the expansion cavity.
[0009] The expansion water tank provided by the present invention includes a shell, and the shell has a storage space inside. A partition is provided inside the shell, and the partition divides the storage space into two independent spaces, one of which is a liquid cavity and the other is an expansion cavity. The liquid cavity and the expansion cavity are connected through a pressure cover and a connecting pipe. When the pressure in the liquid cavity is too large or too small, the pressure cover can be opened to allow the coolant in the liquid cavity to be discharged into the expansion cavity through the connecting pipe, or to allow the coolant in the expansion cavity to flow back into the liquid cavity. Since the expansion water tank in the present invention uses a partition to form a horizontal arrangement of the expansion cavity and the liquid cavity, compared with the current expansion water tank, the horizontally arranged expansion cavity and liquid cavity can effectively reduce the space occupied by the upper and lower arrangements of the expansion water tank, thereby better meeting the use requirements of compact upper and lower arrangements.
[0010] In some possible implementation schemes, one end of the communicating tube located in the expansion chamber is close to the bottom surface of the bottom shell.
[0011] In some possible implementations, the expansion cavity is provided with a communication port, and the communication port is used to connect the expansion cavity with the external environment.
[0012] In some possible implementation schemes, the communication port is provided on the upper cover, or the communication port is provided on the bottom shell at a position close to the upper cover.
[0013] In some possible implementation schemes, a water supply port is provided at the bottom of the liquid chamber.
[0014] In some possible implementation schemes, an indicator line is provided on a portion of the bottom shell corresponding to the liquid cavity, and the indicator line is used to indicate a minimum value of the liquid filled in the liquid cavity.
[0015] In some possible implementation schemes, the liquid cavity is provided with a degassing port, the degassing port is located at a portion of the bottom shell close to the upper cover, and the degassing port is connected to a degassing pipe of the radiator and a cylinder block of the engine.
[0016] In some possible implementation schemes, the partition is detachably connected to the bottom shell.
[0017] In a second aspect, the present invention provides a cooling system for a vehicle, wherein the cooling system comprises an expansion water tank as described in any possible embodiment of the first aspect.
[0018] In a third aspect, the present invention provides a vehicle comprising the cooling system as described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the overall structure of the expansion water tank in the embodiment of the present utility model;
[0020] Figure 2 This is a schematic cross-sectional view of the expansion water tank in an embodiment of the present utility model.
[0021] In the picture:
[0022] 100-shell; 101-connecting port; 102-degassing port; 103-water supply port; 110-bottom shell; 120-upper cover; 200-partition; 300-pressure cover; 400-connecting pipe; S1-liquid chamber; S11-residual space; S12-reserve space; S2-expansion chamber. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0024] For reference Figure 1 and Figure 2 The expansion water tank in the embodiment of the present invention may include a shell 100 , a partition 200 and a pressure cap 300 , wherein the partition 200 is disposed inside the shell 100 , and the pressure cap 300 is connected to the shell 100 .
[0025] Specifically, the housing 100 may include a bottom shell 110 and an upper cover 120. The upper cover 120 may be attached to the bottom shell 110, so that the upper cover 120 and the bottom shell 110 cooperate to form a storage chamber. A partition 200 is located within the storage chamber. One side of the partition 200 may be connected to the bottom shell 110, and the other side may be connected to the upper cover 120, thereby separating the storage chamber into a mutually independent liquid chamber S1 and expansion chamber S2. The arrangement direction of the liquid chamber S1 and the expansion chamber S2 is perpendicular to the arrangement direction of the bottom shell 110 and the upper cover 120. In other words, the liquid chamber S1 and the expansion chamber S2 are arranged in a horizontal structure. This can reduce the overall upper and lower space dimensions of the expansion tank, better meeting the requirements of a compact upper and lower space arrangement.
[0026] A connecting tube 400 is provided between the liquid chamber S1 and the expansion chamber S2 . One end of the connecting tube 400 is connected to the liquid chamber S1 , and the other end is connected to the expansion chamber S2 , so that the liquid chamber S1 and the expansion chamber S2 can be connected through the connecting tube 400 .
[0027] The pressure cap 300 is mounted on the upper cover 120 and communicates with the liquid chamber S1. The end of the communication tube 400 that communicates with the liquid chamber S1 is connected to the pressure cap 300. The pressure cap 300 detects the pressure within the liquid chamber S1 and switches between an open and closed state based on the pressure within the liquid chamber S1. When the pressure cap 300 is open, the liquid chamber S1 and the expansion chamber S2 are connected. When the pressure cap 300 is closed, the liquid chamber S1 and the expansion chamber S2 are disconnected.
[0028] Furthermore, when the expansion tank in this embodiment is in operation, the pressure cap 300 can be configured to open at a constant pressure and self-prime at negative pressure. Specifically, when the pressure in the liquid chamber S1 exceeds a predetermined value, the pressure cap 300 opens; when the pressure in the liquid chamber S1 falls below a predetermined value, the vacuum valve of the pressure cap 300 opens. For example, assuming the threshold for opening the pressure cap 300 is P1 and the threshold for opening the vacuum valve is P2, where P2 < P1, the pressure cap 300 is closed when the pressure in the liquid chamber S1 is between P2 and P1.
[0029] When the pressure in liquid chamber S1 is greater than P1, the pressure in liquid chamber S1 is greater than the pressure in expansion chamber S2. At this point, the pressure cap 300 opens with positive pressure, allowing excess gas or liquid in liquid chamber S1 to be discharged into expansion chamber S2 through connecting tube 400, thereby achieving degassing and expansion functions. When the pressure in liquid chamber S1 is less than P2, the pressure in liquid chamber S1 is less than the pressure in expansion chamber S2. At this point, the vacuum valve of pressure cap 300 opens, allowing liquid in expansion chamber S2 to flow back into liquid chamber S1 through connecting tube 400, thereby achieving coolant reflux and filling.
[0030] In a specific implementation, when setting the value of the pressure cover 300 for positive pressure opening or negative pressure self-priming, P1 can be, for example, 50 kPa, and P2 can be, for example, -10 kPa. Of course, in actual application, the values of P1 and P2 can also be adaptively designed according to different usage scenarios, and this embodiment does not limit this.
[0031] Continue to refer Figure 1 and Figure 2 The end of the connecting tube 400 that communicates with the expansion chamber S2 can pass through the bottom shell 110 from the outside to the inside and extend into the expansion chamber S2. Furthermore, the end of the connecting tube 400 can be close to the bottom surface of the bottom shell 110. When the coolant in the expansion chamber S2 needs to flow back to the liquid chamber S1, the end of the connecting tube 400 is close to the bottom surface of the bottom shell 110, allowing as much coolant as possible in the expansion chamber S2 to flow back to the liquid chamber S1, thereby meeting usage requirements.
[0032] The portion of the connecting tube 400 located within the expansion chamber S2 can also be arranged perpendicular to the arrangement direction of the liquid chamber S1 and the expansion chamber S2, so that the length of the connecting tube 400 can be shortened. When the cooling liquid flows back from the expansion chamber S2 to the liquid chamber S1 through the connecting tube 400, the cooling liquid can be prevented from remaining inside the connecting tube 400, thereby avoiding waste.
[0033] Furthermore, if Figure 1 or Figure 2 As shown, the expansion chamber S2 is further provided with a communication port 101, which can be used to communicate the expansion chamber S2 with the environment outside the housing 100. The external environment can be understood as the atmospheric environment. Since the expansion chamber S2 is connected to the atmospheric environment through the communication port 101, the pressure in the expansion chamber S2 can be kept stable at all times. This can prevent changes in the pressure in the expansion chamber S2 from affecting the pressure cap 300, thereby ensuring the pressure balance of the pressure cap 300.
[0034] Specifically, the communication port 101 can be set on the upper cover 120, or the communication port 101 can also be set at a position of the bottom shell 110 close to the upper cover 120 to prevent the coolant in the expansion chamber S2 from overflowing from the communication port 101 to the outside of the shell 100 to the greatest extent.
[0035] Continue to refer Figure 2 Liquid chamber S1 can be considered to have a residual space S11 and a reserve space S12 arranged vertically, with residual space S11 located at the bottom of reserve space S12. During normal operation of the expansion tank, the coolant in liquid chamber S1 must at least fill residual space S11 to ensure the required coolant level. To ensure this, an indicator line can be provided on the bottom shell 110 corresponding to the liquid chamber S1. This indicator line can be used to demarcate residual space S11 from reserve space S12. Alternatively, it can be understood that this indicator line can be used to indicate the minimum coolant level within liquid chamber S1.
[0036] In this embodiment, since the expansion space and the reserve space S12 are separated by a partition 200, when the liquid chamber S1 is filled with coolant, the entire liquid chamber S1 can be filled with coolant, thereby meeting different usage requirements. For example, the liquid chamber S1 can be completely filled with coolant. In this case, the layout of the expansion tank is not restricted by the layout direction. Regardless of the angle between the expansion tank and the horizontal, the liquid level in the liquid chamber S1 will not be affected.
[0037] Furthermore, if Figure 1 and Figure 2As shown, the liquid chamber S1 is further provided with a degassing port 102, which can be provided at a location of the bottom shell 110 near the upper cover 120. There can be multiple degassing ports 102, at least one of which is connected to the degassing pipe of the radiator, and at least one of which is connected to the cylinder block of the engine. For example, when the expansion water tank in this embodiment is used in a cooling system, the coolant absorbs heat and vaporizes when flowing through the engine water jacket. The vaporized coolant can enter the liquid chamber S1 through the degassing port 102. At this time, due to the entry of gas into the liquid chamber S1, the pressure in the liquid chamber S1 increases until the pressure cap 300 opens at positive pressure, and the excess gas or liquid in the liquid chamber S1 is discharged into the expansion chamber S2 through the connecting pipe 400.
[0038] Further, continue to refer to Figure 1 and Figure 2 The bottom of liquid chamber S1 is also equipped with a water replenishment port 103, which can be used to replenish the coolant circulating in the cooling system, thereby maintaining a stable amount of coolant circulating in the cooling system. Because the expansion tank is located at a high position, the placement of water replenishment port 103 at the bottom of liquid chamber S1 allows the coolant in liquid chamber S1 to automatically flow through water replenishment port 103 into the cooling system's circulation pipeline when the coolant in the cooling system decreases.
[0039] When the coolant in liquid chamber S1 flows out through the water replenishment port 103, the coolant in liquid chamber S1 decreases, causing the pressure in liquid chamber S1 to decrease until the vacuum valve of pressure cap 300 opens. At this time, the coolant in expansion chamber S2 flows back into liquid chamber S1 through connecting pipe 400, thereby maintaining a sufficient amount of coolant in liquid chamber S1.
[0040] In some embodiments, the partition 200 can be detachably connected to the bottom housing 110. When the volume of the storage chamber is constant, the space ratio between the liquid chamber S1 and the expansion chamber S2 can be adjusted by adjusting the placement of the partition 200 within the storage chamber. When the expansion tank is used in different scenarios, the space ratio between the liquid chamber S1 and the expansion chamber S2 can be designed to better adapt to different operating conditions, thereby improving product competitiveness and customer satisfaction.
[0041] Based on the same design concept, embodiments of the present invention also provide a cooling system comprising an expansion tank as described in the aforementioned embodiments. The cooling system of this embodiment can be applied to a vehicle. Because the expansion tank can reduce the upper and lower space occupied, the overall upper and lower space required for the cooling system can be reduced, thereby better meeting the need for a compact upper and lower space layout.
[0042] Based on the same design concept, embodiments of the present invention may also provide a vehicle, such as a commercial vehicle, including a cooling system as described in the aforementioned embodiments. Because the cooling system can reduce upper and lower layout space, it can save space in the vehicle, which can be used for the layout of other structures, thereby further improving vehicle performance.
[0043] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims
1. An expansion water tank, characterized in that: include: A housing, comprising a bottom housing and an upper cover, wherein the upper cover is covered on the bottom housing to form a receiving cavity; a partition disposed inside the accommodating cavity, the partition being used to separate the accommodating cavity into a liquid cavity and an expansion cavity that are independent of each other, a connecting pipe being provided between the liquid cavity and the expansion cavity, wherein an arrangement direction of the liquid cavity and the expansion cavity is perpendicular to an arrangement direction of the bottom shell and the upper cover; A pressure cover is provided on the upper cover and communicates with the liquid cavity. One end of the communicating tube is connected to the pressure cover, and the other end of the communicating tube is located in the expansion cavity. The pressure cover is used to open or close according to the pressure in the liquid cavity so that the liquid cavity is connected to or disconnected from the expansion cavity.
2. The expansion water tank according to claim 1, characterized in that: One end of the communicating pipe located in the expansion chamber is close to the bottom surface of the bottom shell.
3. The expansion water tank according to claim 1 or 2, characterized in that: The expansion cavity is provided with a communication port, and the communication port is used to connect the expansion cavity with the external environment.
4. The expansion water tank according to claim 3, characterized in that: The communication port is provided on the upper cover, or the communication port is provided on the bottom shell at a position close to the upper cover.
5. The expansion water tank according to claim 1, characterized in that: A water replenishing port is provided at the bottom of the liquid cavity.
6. The expansion water tank according to claim 5, characterized in that: An indicator line is provided at a portion of the bottom shell corresponding to the liquid cavity, and the indicator line is used to indicate a minimum value of the liquid filled in the liquid cavity.
7. The expansion water tank according to claim 1, characterized in that The liquid cavity is provided with a degassing port, which is located at a portion of the bottom shell close to the upper cover, and is communicated with a degassing pipe of the radiator and a cylinder block of the engine.
8. The expansion water tank according to claim 1, characterized in that The partition plate is detachably connected to the bottom shell.
9. A cooling system for a vehicle, characterized in that: The cooling system comprises the expansion water tank according to any one of claims 1 to 8.
10. A vehicle, characterized in that: Comprising the cooling system of claim 9.