Low-energy-consumption low-displacement automobile water pump
The low-energy consumption water pump design with a guide cavity and booster wheel stabilizes impeller operation at low speeds, improving flow rate and pressure, addressing energy inefficiencies and fluid stability issues in automobile water pumps.
Patent Information
- Application Number
- CN202420825077.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-20
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-20
AI Technical Summary
Existing automobile water pumps face high energy consumption and limited control efficiency at low speeds due to insufficient power and fluid mechanics characteristics, affecting the cooling system's response speed and stability, especially in urban driving conditions or frequent speed changes.
A low-energy consumption and low-displacement water pump design featuring a guide cavity, diverter holes, booster wheel, and controlled impeller rotation, enhancing fluid stability and pressure through centrifugal force and kinetic energy conversion.
The design stabilizes impeller operation at low speeds, increases flow rate and pressure, reduces energy consumption, and improves cooling system regulation, preventing fluid backflow and enhancing drainage capacity.
Smart Images
Figure CN222296513U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water pumps, in particular to a low-energy-consumption and low-displacement automobile water pump. Background Art
[0002] The car water pump is a mechanical device used to maintain the normal operation of the engine cooling system. It helps regulate the temperature of the engine by circulating coolant, thereby preventing overheating and ensuring that the engine runs in optimal working condition. This pump is usually composed of an impeller, a pump body, bearings and sealing components, and in most cases is driven by the engine's belt or chain. When the engine is running, the impeller of the water pump rotates, creating a pressure difference that attracts coolant into the pump and pushes it through the engine's water channels, then flows to the radiator and finally circulates back to the water pump. In this process, the coolant absorbs the heat generated by the engine and dissipates it in the radiator, thereby keeping the engine temperature within a safe operating range. Because the car water pump is critical to the performance and life of the engine, it needs to be inspected and maintained regularly. Car owners should ensure the level and quality of the coolant, check the pump body for leaks in time, and pay attention to any noise that may indicate wear or failure of the water pump. If there is a problem with the water pump, it should be repaired or replaced in time to avoid engine overheating and other related problems.
[0003] The automotive water pumps that are widely used in the market generally have a certain degree of energy consumption problems during their operation. These water pumps are usually designed with a large displacement to adapt to different cooling needs. However, this design usually leads to limited control efficiency of the water pump when running at low speeds. Its regulation mechanism mainly controls the coolant flow by changing the rotation speed of the impeller, but in practical applications, when the water pump needs to be fine-tuned at a lower speed, this method is often not precise and flexible enough. This lack of control accuracy not only reduces the energy efficiency of the water pump itself, but may also affect the response speed and stability of the entire cooling system when the engine needs to fine-tune the cooling amount to achieve the optimal working state. For example, in a congested urban driving environment or in the case of frequent speed changes, the engine's cooling needs may change frequently. At this time, a sensitive and precisely regulated water pump system will be particularly important. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a low-energy consumption and low-displacement automobile water pump, which has the advantages of more stable rotation of the water pump impeller at low speed and ability to form additional flow during rotation, increasing the flow rate and pressure change of the water pump, thereby improving the regulation performance of the water pump. This makes the water pump easier to regulate at low speeds and has lower energy consumption, solving the problem that the existing automobile water pumps have high energy consumption, and that under low speed and low displacement conditions, the water pumps will have insufficient power, fluid mechanics characteristics and other factors, making the water pump difficult to regulate.
[0006] (II) Technical solution
[0007] In order to achieve more stable rotation of the water pump impeller at low speed and to form additional flow during rotation, increase the flow rate and pressure change of the water pump, thereby improving the adjustment performance of the water pump, which makes the water pump easier to adjust at low speed and has lower energy consumption, the utility model provides the following technical solutions: a low-energy consumption and low-displacement automobile water pump, comprising a housing, an impeller, a water pump shaft, and a water pump pulley, a water pump cavity is arranged in the housing, a water pump shaft that passes through the housing is coaxially rotatably mounted on the housing, a water pump pulley is coaxially fixedly mounted on one end of the water pump shaft, an impeller is fixedly mounted on the other end of the water pump shaft, the impeller is arranged in the water pump cavity, a guide cavity is provided in the water pump shaft and the impeller, a diversion hole is provided on the blades of the impeller, the diversion hole connects the guide cavity and the water pump cavity, a water inlet for conveying coolant to the water pump cavity is provided at one end of the housing, and a drain is provided at the other end of the housing.
[0008] Preferably, the drain outlet is coaxially arranged with the shell, and the diameter of the drain outlet decreases linearly along the drainage direction.
[0009] Preferably, two or more water inlets are arranged along the circumferential direction of the shell.
[0010] Preferably, two or more diversion holes are arranged on each blade of the impeller along the blade direction of the impeller.
[0011] Preferably, the water pump pulley is rotatably connected to a drive motor.
[0012] Preferably, one end of the water pump shaft is further provided with a liquid injection port connected to the flow guide cavity.
[0013] Preferably, a boost wheel is fixedly mounted on the end surface of the impeller, and the diameter of the boost wheel is smaller than the diameter of the impeller.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides a low-energy consumption and low-displacement automobile water pump, which has the following beneficial effects:
[0016] 1. The low-energy consumption and low-displacement automobile water pump uses a guide cavity structure, a diverter hole structure, and an impeller structure in coordination. Compared with the traditional technical structure, the guide cavity enables the coolant to generate centrifugal force and be thrown out from the diverter hole when the impeller rotates, forming a negative pressure environment. This negative pressure can suppress the reflux and mixed flow of the fluid, assist the impeller to work stably under low-displacement conditions, and enable the impeller to work more stably under low-displacement conditions. When a negative pressure environment is formed inside the guide cavity, it is similar to the structure of an auxiliary pump, which can increase the power of the fluid, improve the pumping efficiency of the impeller, and reduce the generation of noise and vibration.
[0017] 2. The low-energy consumption and low-displacement automobile water pump uses a booster wheel structure in conjunction with a drain port structure. Compared with the traditional technical structure, when the liquid passes through the booster wheel, the rotation of the booster wheel converts the kinetic energy of the fluid into a higher pressure and flow rate, and the diameter of the drain port decreases linearly along the drainage direction. When the liquid pumped from the impeller direction passes through the drain port, the cross-sectional area of the liquid flowing through the drain port will be reduced. According to the continuity equation, the flow rate of the fluid is inversely proportional to the cross-sectional area, that is, the flow rate is proportional to the inverse of the cross-sectional area, thereby increasing the liquid flow rate, thereby avoiding liquid retention or backflow at the drain port, maintaining the stability and efficiency of the fluid flow of the water pump, and increasing the liquid flow rate also helps to improve the drainage capacity of the water pump and increase the working efficiency and performance of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the low-energy consumption and low-displacement automobile water pump of the utility model;
[0019] Figure 2 This is a structural front view of the low-energy consumption and low-displacement automobile water pump of the utility model;
[0020] Figure 3 This is a top view of the structure of the low-energy consumption and low-displacement automobile water pump of the utility model;
[0021] Figure 4 This is a structural cross-sectional view of the low-energy consumption and low-displacement automobile water pump of the utility model;
[0022] Figure 5 The three-dimensional structure diagram of the impeller of the low-energy consumption and low-displacement automobile water pump of the utility model is shown in FIG.
[0023] In the figure: 1-housing, 2-impeller, 3-water pump shaft, 4-water pump pulley, 5-water pump chamber, 6-flow guide chamber, 7-diversion hole, 8-water inlet, 9-drainage outlet, 10-drive motor, 11-liquid injection port, 12-boosting wheel. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , a low-energy consumption and low-displacement automobile water pump, comprising a housing 1, an impeller 2, a water pump shaft 3, and a water pump pulley 4. A water pump chamber 5 is arranged in the housing 1, and a water pump shaft 3 penetrating the housing 1 is coaxially rotatably installed on the housing 1, a water pump pulley 4 is coaxially fixedly installed on one end of the water pump shaft 3, and an impeller 2 is fixedly installed on the other end of the water pump shaft 3. The impeller 2 is arranged in the water pump chamber 5, and a guide chamber 6 is opened in the water pump shaft 3 and the impeller 2. The existence of the guide chamber 6 makes the coolant generate centrifugal force and throw out from the diversion hole 7 when the impeller 2 rotates, forming a negative pressure environment. This negative pressure can suppress the backflow and mixed flow of the fluid, assist the impeller 2 to work stably under low-displacement conditions, and enable the impeller 2 to work more stably under low-displacement conditions. And when the negative pressure environment is formed inside the guide chamber 6, it is similar to the structure of an auxiliary pump, which can increase the power of the fluid and improve the pumping efficiency of the impeller 2. The negative pressure environment can help the impeller 2 to extract the coolant more effectively and improve the working efficiency of the impeller 2. The blades of the impeller 2 are provided with diverter holes 7, such as Figure 5 As shown, the diverter hole 7 is connected to the diverter cavity 6 and the water pump cavity 5. The diverter hole 7 is connected to the diverter cavity 6 and the water pump cavity 5, so that when a negative pressure environment is formed in the diverter cavity 6, the power of the fluid can be increased, and the pumping efficiency of the impeller 2 can be improved. The negative pressure environment can help the impeller 2 to extract the coolant more effectively, increase the flow speed and pressure of the fluid, and improve the working efficiency of the water pump. A water inlet 8 for conveying coolant to the water pump cavity 5 is provided at one end of the housing 1, and a drain port 9 is provided at the other end of the housing 1.
[0026] See also Figure 4, the drain port 9 is coaxially arranged with the shell 1, and the diameter of the drain port 9 decreases linearly along the drainage direction. When the liquid pumped out from the direction of the impeller 2 passes through the drain port 9, the cross-sectional area of the liquid flowing through the drain port 9 will be reduced. According to the continuity equation, the flow velocity of the fluid is inversely proportional to the cross-sectional area, that is, the flow velocity is proportional to the inverse of the cross-sectional area, thereby increasing the liquid flow velocity, thereby avoiding the liquid from being retained or refluxed at the drain port 9 and improving the drainage efficiency. This can reduce the phenomenon of reflux and mixed flow, and maintain the stability and efficiency of the fluid flow of the water pump. In addition, increasing the liquid flow velocity also helps to improve the drainage capacity of the water pump and increase the working efficiency and performance of the water pump. Two or more water inlets 8 are arranged along the circumferential direction of the shell 1. Two or more diverter holes 7 on the blades of each impeller 2 are arranged along the blade direction of the impeller 2. A drive motor 10 is rotatably connected to the water pump pulley 4, and the speed of the water pump can be controlled by the drive motor 10. A liquid injection port 11 connected to the guide chamber 6 is also opened at one end of the water pump shaft 3. Please refer to Figure 5 , a boost wheel 12 is fixedly mounted on the end face of the impeller 2, and the diameter of the boost wheel 12 is smaller than that of the impeller 2. The existence of the boost wheel 12 can increase the pressure of the fluid. When the liquid passes through the impeller 2 and enters the area of the boost wheel 12, the rotation of the boost wheel 12 will further increase the pressure of the liquid. Due to the small diameter of the boost wheel 12, the speed of the liquid increases when passing through the boost wheel 12, thereby generating a higher dynamic pressure head, further increasing the pressure of the liquid. In addition, the existence of the boost wheel 12 can also improve the drainage capacity of the water pump. By increasing the pressure of the liquid, the water pump can more effectively extract the liquid from the water inlet 8 and discharge it quickly. This helps to improve the drainage efficiency and capacity of the water pump and maintain the stable operation of the water pump. In addition, the rotation of the boost wheel 12 can also increase the kinetic energy of the liquid. When the liquid passes through the boost wheel 12, the rotation of the boost wheel 12 converts the kinetic energy of the fluid into a higher pressure and flow rate. This helps to improve the pumping efficiency of the impeller 2 and enhance the working capacity of the water pump.
[0027] Working principle: During the operation of the water pump, the rotation of the impeller 2 will generate centrifugal force, which will throw the coolant out of the diversion hole 7 and form a negative pressure guide chamber 6. This negative pressure environment will cause the injection port 11 to extract the coolant to form a circulating flow. This process can improve the stability of the fluid, reduce undesirable phenomena such as flow instability, backflow and mixed flow, and enable the impeller 2 of the water pump to work more stably at low displacement. At the same time, when a negative pressure environment is formed inside the guide chamber 6, the guide chamber 6 will also form a structure similar to a water pump. This negative pressure environment can assist the impeller 2 to improve the pumping efficiency of the impeller 2, increase the power of the fluid, and thus improve the working efficiency of the water pump. In addition, the function of the booster wheel 12 in the water pump is to provide additional boosting capacity. The diameter of the booster wheel 12 is smaller than the diameter of the impeller 2, and it can achieve multi-stage boosting or multi-stage head. The impeller 2 is responsible for providing high flow, and the booster wheel 12 is responsible for providing high pressure, so that the water pump can operate efficiently at low energy consumption and low displacement.
[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A low-energy consumption and low-displacement automobile water pump, comprising a housing (1), an impeller (2), a water pump shaft (3), and a water pump pulley (4), wherein a water pump chamber (5) is arranged in the housing (1), a water pump shaft (3) penetrating the housing (1) is coaxially rotatably mounted on the housing (1), a water pump pulley (4) is coaxially fixedly mounted on one end of the water pump shaft (3), an impeller (2) is fixedly mounted on the other end of the water pump shaft (3), and the impeller (2) is arranged in the water pump chamber (5), characterized in that: A guide cavity (6) is provided in the water pump shaft (3) and the impeller (2); a diversion hole (7) is provided on the blade of the impeller (2); the diversion hole (7) is connected to the guide cavity (6) and the water pump cavity (5); a water inlet (8) for conveying coolant into the water pump cavity (5) is provided at one end of the housing (1); and a water outlet (9) is provided at the other end of the housing (1).
2. The low-energy consumption and low-displacement automobile water pump according to claim 1 is characterized in that: The drainage port (9) is coaxially arranged with the shell (1), and the diameter of the drainage port (9) decreases linearly along the drainage direction.
3. The low-energy consumption and low-displacement automobile water pump according to claim 1 is characterized in that: Two or more water inlets (8) are arranged along the circumferential direction of the shell (1).
4. The low-energy consumption and low-displacement automobile water pump according to claim 1 is characterized in that: Two or more flow-dividing holes (7) are arranged on each blade of the impeller (2) along the blade direction of the impeller (2).
5. The low-energy consumption and low-displacement automobile water pump according to claim 1 is characterized in that: A driving motor (10) is rotatably connected to the water pump pulley (4).
6. The low-energy consumption and low-displacement automobile water pump according to claim 1 is characterized in that: One end of the water pump shaft (3) is also provided with a liquid injection port (11) which is in communication with the flow guide cavity (6).
7. The low-energy consumption and low-displacement automobile water pump according to claim 4 is characterized in that: A boost wheel (12) is also fixedly mounted on the end surface of the impeller (2); the diameter of the boost wheel (12) is smaller than the diameter of the impeller (2).