Engine water pump and automobile

Abstract

The utility model provides an engine water pump and an automobile, and the engine water pump comprises a water pump shell, a pump driving assembly and a valve assembly. Wherein the water pump shell is provided with a liquid inlet, a liquid outlet and a water flow channel, and the water flow channel comprises a main water flow channel and a branch water flow channel which communicate with each other; the pump driving assembly comprises a driving shaft and blades connected with the driving shaft, and the blades extend into the main water flow channel to drive cooling liquid to flow into the main water flow channel from the liquid inlet and flow into an engine water circulation system through the liquid outlet. The valve assembly comprises a driving part and a valve body, the valve body is located in the water diversion flow channel, and the driving part is used for controlling the position of the valve body so as to adjust the flow of the cooling liquid in the water diversion flow channel. According to the engine water pump, the flow of the cooling liquid in the water dividing flow channel can be adjusted, then the flow of the cooling liquid entering an engine water circulation system is adjusted, through the simple and effective structural design, accurate control over the flow of the cooling liquid is achieved, and the production cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of automotive cooling systems, and particularly relates to an engine water pump and an automobile.

Background Art

[0002] Centrifugal mechanical water pumps are widely used in automotive engines as engine water pumps. Generally, they are driven by the crankshaft of the engine through a belt. Usually, the centrifugal mechanical water pump pumps water continuously along with the operation of the engine, and the flow rate of the water pump cannot be adjusted. Although existing electronic water pumps can adjust the flow rate of the coolant, their cost is relatively high. Therefore, how to adjust the water supply of the mechanical water pump according to the actual operating state of the engine is the current exploration direction, and it can also reduce the production cost of the mechanical water pump.

Utility Model Content

[0003] This application provides an engine water pump and an automobile, which can adjust the flow rate of the coolant entering the engine water circulation system, and through a simple and effective structural design, achieve precise control of the flow rate of the coolant, and reduce the production cost.

[0004] This application provides an engine water pump, and the engine water pump includes:

[0005] A water pump housing, the water pump housing is provided with a liquid inlet, a liquid outlet and a water flow channel, and the water flow channel includes a main water flow channel and a branch water flow channel that are connected and communicated;

[0006] A pump drive assembly, the pump drive assembly includes a drive shaft and a blade connected to the drive shaft, the blade extends into the main water flow channel, drives the coolant to flow into the main water flow channel from the liquid inlet, and flows into the engine water circulation system through the liquid outlet; and

[0007] A valve assembly, the valve assembly includes a driving member and a valve body, the valve body is located in the branch water flow channel, and the driving member is used to control the position of the valve body to adjust the flow rate of the coolant in the branch water flow channel.

[0008] In some embodiments, a ring-shaped sealing portion is further provided at the branch water flow channel of the water pump housing, and the ring-shaped sealing portion cooperates with the valve body to adjust the flow rate of the coolant in the branch water flow channel.

[0009] In some embodiments, the ring-shaped sealing portion is provided with a first ring-shaped sealing boss and a second ring-shaped sealing boss, and the inner diameter of the flow channel at the first ring-shaped sealing boss is larger than the inner diameter of the flow channel at the second ring-shaped sealing boss.

[0010] In some embodiments, the drive shaft of the pump drive assembly is connected to the engine through a belt drive.

[0011] In some embodiments, the engine water pump further includes a temperature sensor, which is installed at the liquid outlet end of the engine water circulation system for detecting the liquid temperature at the liquid outlet end of the engine water circulation system; the driving member drives the moving position of the valve body according to the liquid temperature to adjust the coolant flow rate in the water diversion channel.

[0012] In some embodiments, the driving member includes a driving motor, a driving rotor and a steering head; the shaft end of the driving motor is connected to the driving rotor and can drive the driving rotor to rotate; the driving rotor is slidably connected to the steering head and can drive the steering head to perform a linear motion.

[0013] In some embodiments, the valve body includes a valve stem and a valve core. One end of the valve stem is connected to the valve core, and the other end is connected to the steering head; the valve core is slidably connected to the second annular sealing boss; the driving rotor is slidably connected to the steering head and can drive the steering head, the valve stem and the valve core, and the valve core performs a linear motion on the inner wall of the second annular sealing boss.

[0014] In some embodiments, a sealing ring is further provided at the joint of the valve stem and the water diversion channel, and the sealing ring is tightly connected to the water diversion channel and the valve stem.

[0015] In some embodiments, sealing grooves are provided at both the liquid inlet and the liquid outlet of the water pump housing for installing sealing rings.

[0016] The present application also provides an automobile, which includes the above-mentioned engine water pump.

[0017] After adopting the above technical solution, the beneficial effects are as follows:

[0018] The present application provides an engine water pump and an automobile, including a water pump housing, a pump drive assembly and a valve assembly. The present application adds a water diversion channel on the basis of the traditional water pump flow channel structure, and a valve body is further installed in the water diversion channel. The driving member can control the position of the valve body to adjust the coolant flow rate in the water diversion channel, and further adjust the coolant flow rate entering the engine water circulation system. Through a simple and effective structural design, the accurate control of the coolant flow rate is realized, and the production cost is reduced.

Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of an engine water pump.

[0021] Figure 2 It is a schematic exploded view of an engine water pump.

[0022] Figure 3 It is a schematic sectional structure diagram of an engine water pump.

[0023] Figure 4 It is a schematic diagram of the water flow passage of an engine water pump.

[0024] Figure 5 It is a partial schematic diagram of an engine water pump.

[0025] Reference numerals:

[0026] 100 - Engine water pump;

[0027] 10 - Housing; 101 - Sealing groove; 11 - Liquid inlet; 12 - Liquid outlet; 13 - Water flow passage; 131 - Main water flow passage; 132 - Sub - water flow passage; 1321 - Annular sealing part; 1322 - First annular sealing boss; 1323 - Second annular sealing boss;

[0028] 20 - Pump drive assembly; 21 - Drive shaft; 22 - Blade;

[0029] 30 - Valve assembly; 31 - Driving part; 311 - Driving motor; 312 - Driving rotor; 313 - Steering head; 32 - Valve body; 321 - Valve rod; 3211 - Sealing ring; 322 - Valve core.

Detailed implementation manners

[0030] For a better understanding of the technical solutions of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0031] It should be clear that the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0032] The terms used in the embodiments of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. The singular forms of "a", "the" and "said" used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0033] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally indicates that the associated objects before and after are in an "or" relationship.

[0034] Under normal circumstances, the water pump of an automotive engine pumps water continuously along with the operation of the engine. This water supply mode sometimes exceeds the actual demand of the engine's water circulation system, thereby causing excessive cooling. This application provides an engine water pump that can improve the coolant supply mode of the engine's water circulation system. Figure 1 is a schematic structural diagram of an engine water pump. Figure 2 is a schematic exploded view of an engine water pump, as Figure 1 and Figure 2 shown. This engine water pump 100 includes a water pump housing 10, a pump drive assembly 20, and a valve assembly 30.

[0035] Among them, the water pump housing 10 is provided with a liquid inlet 11, a liquid outlet 12, and a water flow channel 13. The water flow channel 13 includes a main water flow channel 131 and a branch water flow channel 132 that are connected and communicate with each other.

[0036] The pump drive assembly 20 includes a drive shaft 21 and blades 22 connected to the drive shaft 21. The blades extend into the main water flow channel 131, driving the coolant to flow into the main water flow channel 131 from the liquid inlet 11 and flow into the engine water circulation system through the liquid outlet 12.

[0037] The valve assembly 30 includes a drive member 31 and a valve body 32. The valve body 32 is located in the branch water flow channel 132, and the drive member 31 is used to control the position of the valve body 32 to adjust the coolant flow rate in the branch water flow channel 132.

[0038] In the above solution, a branch water flow channel 132 is added to the traditional water flow channel, and a valve body 32 is also installed in the branch water flow channel 132, making the water supply entering the engine water circulation system a regulated water supply. The drive member 31 can control the position of the valve body 32 to adjust the coolant flow rate in the branch water flow channel 132, and then adjust the coolant flow rate entering the engine water circulation system. Through a simple and effective structural design, precise control of the coolant flow rate is achieved, reducing production costs. Moreover, this mechanical water pump with adjustable flow rate can also adjust the coolant flow rate according to the operating state of the engine, preventing excessive cooling of the engine and improving the thermal management mode of the vehicle.

[0039] As Figure 3As shown, the water pump housing 10 is provided with a liquid inlet 11 and a liquid outlet 12. Among them, both the liquid inlet 11 and the liquid outlet 12 are provided with a sealing groove 101. The sealing groove 101 is of an annular structure and is used to install a sealing ring to prevent liquid leakage. The material of the water pump housing 10 is an alloy material, which can ensure the structural strength of the water pump housing 10.

[0040] Specifically, components such as the pump body, flow channel, and valve body of this engine water pump can be completed by casting, die-casting, or machining methods, and the materials can be selected from metals or non-metals, which are not limited here.

[0041] In one implementation, as Figure 3 、 Figure 4 and Figure 5 shown, the pump drive assembly 20 of this engine water pump 100 is driven by the engine crankshaft to drive the water pump pulley or the connecting turntable to drive the drive shaft 21, and the drive shaft 21 drives the blade 22 to rotate, thereby providing power to make the coolant in the water flow channel flow. In other implementations, the blade 22 can be in the form of a turbine;

[0042] Among them, the main water flow channel 131 is in an arc shape, starting from the liquid inlet 11 at the bottom of the water pump housing 10, turning right into the inner cavity of the pump body where the water pump blade 22 is located, and then turning left to the liquid outlet 12; the sub-water flow channel 132 is arranged in a U shape. Among them, one end of the open end of the U shape is connected to the liquid outlet 12, and the other end is connected to the liquid inlet 11 and faces the water pump blade 22.

[0043] The sub-water flow channel 132 is also provided with an annular sealing portion 1321 with two levels of bosses, including a first annular sealing boss 1322 and a second annular sealing boss 1323. The inner diameter of the flow channel at the first annular sealing boss 1322 is larger than the inner diameter of the flow channel at the second annular sealing boss 1323, and the second annular sealing boss 1323 can be set as an arc surface, a conical surface, or have a sealing ring installation groove, so as to be hermetically matched with the sealing portion of the valve body 32, and can close the sub-water flow channel 132 or adjust the coolant flow rate in the sub-water flow channel 132. Therefore, when the blade 22 of the water pump pumps the coolant in the main water flow channel 131 in the water pump out of the liquid outlet 12 and flows out, when the valve body 32 in the sub-water flow channel 132 is not closed, part of the coolant flows back to the main water flow channel 131 through the sub-water flow channel 132.

[0044] In the above solution, the water flow channel 13 is set in a double-flow channel form, which changes the supply mode of the coolant. Combining with the closing situation of the sub-water flow channel 132, the supply of the coolant is adjusted to prevent the supply of the coolant in the engine from being greater than the actual demand.

[0045] In some implementation schemes, as Figure 5As shown, the driving member 31 of the engine water pump 100 includes a driving motor 311, a driving rotor 312 and a steering head 313. The driving motor 311 can be a stepping motor or a servo motor.

[0046] The driving rotor 312 is mounted on the top end of the shaft of the driving motor 311 . The driving rotor 312 is elliptical in shape and has an inner hole at its center. The inner hole is used to be tightly connected to the output shaft of the driving motor 311 .

[0047] The steering head 313 is a convex-shaped structure, with its top end connected to the valve body 32. An elliptical inner hole is located in the center of the convex structure, which slidably fits within the elliptical shape of the drive rotor 312. Rotation of the drive motor 311 shaft drives the steering head 313 in linear motion. In a specific embodiment, the smaller the rotation angle of the drive motor 311 shaft, the shorter the distance the steering head 313 and valve body 32 travel in linear motion.

[0048] In the above solution, the rotation mode of the driving motor 311 is changed to linear movement by driving the rotor 312 and the steering head 313, so that the movement of the valve body 32 can be precisely controlled, which can both close the water diversion channel 132 and control the flow.

[0049] In some embodiments, as Figure 5 As shown, the valve body 32 includes a valve stem 321 and a valve core 322. The valve stem 321 is connected to the valve core 322 at one end and to the steering head 313 of the driver 31 at the other end. The valve stem 321 can be round or square, without limitation. A sealing ring 3211 is provided at the junction of the valve stem 321 and the water diversion channel 132. The sealing ring 3211 can be a corrosion-resistant and high-temperature-resistant rubber seal. The sealing rubber seal is fitted over the valve stem 321, tightly connected to the inner surface of the water diversion channel 132 and capable of sliding and leak-proofing.

[0050] The valve core 322 is connected to the second annular sealing boss 1323. The second annular sealing boss 1323 is provided with an annular groove. The groove contains a corrosion-resistant and high-temperature resistant sealing rubber ring. When the valve core 322 and the second annular sealing boss 1323 are tightly fitted, there will be no leakage.

[0051] In the above solution, the sealing ring 3211 is a corrosion-resistant and high-temperature resistant sealing rubber sleeve, which can achieve the combined functions of leak-proofing and slip-fitting.

[0052] In some embodiments, the engine water pump 100 is further provided with a temperature sensor (not shown in the figure). The temperature sensor can be installed at the liquid outlet 12 of the engine water circulation system to detect the liquid temperature of the liquid outlet 12 of the engine water circulation system. The temperature sensor transmits the detected temperature information to the vehicle control center (not shown in the figure). The vehicle control center sends a signal to the drive motor 311. The drive motor 311 drives the drive rotor 312 to deflect or rotate and drives the steering head 313 to drive the valve stem 321 and the valve core 322 to move linearly or reciprocally. Accordingly, the moving position of the valve body 32 is driven by the liquid temperature at the liquid outlet 12 to control whether the sub-water flow channel 132 is closed or to adjust the coolant flow rate in the sub-water flow channel 132.

[0053] In the above solution, the temperature sensor can transmit the temperature information to the vehicle control center, and then the control center sends a command signal to the drive motor 311, so that the drive motor 311 can accurately control the movement of the valve stem 321 and the valve core 322, enabling the supply of the engine circulating liquid to be quantified.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An engine water pump, characterized in that, The engine water pump includes: A water pump housing, which is provided with a liquid inlet, a liquid outlet and a water flow passage. The water flow passage includes a main water flow passage and a branch water flow passage that are connected and communicated; A pump drive assembly, which includes a drive shaft and a blade connected to the drive shaft. The blade extends into the main water flow passage, driving the coolant to flow into the main water flow passage from the liquid inlet and flowing into the engine water circulation system through the liquid outlet; and A valve assembly, which includes a drive member and a valve body. The valve body is located in the branch water flow passage, and the drive member is used to control the position of the valve body to adjust the coolant flow rate in the branch water flow passage.

2. The engine water pump according to claim 1, characterized in that, An annular sealing portion is further provided at the branch water flow passage of the water pump housing, and the annular sealing portion cooperates with the valve body to adjust the coolant flow rate in the branch water flow passage.

3. The engine water pump according to claim 2, characterized in that, The annular sealing portion is provided with a first annular sealing boss and a second annular sealing boss, and the inner diameter of the flow passage at the first annular sealing boss is larger than the inner diameter of the flow passage at the second annular sealing boss.

4. The engine water pump according to claim 1, characterized in that, The drive shaft of the pump drive assembly is connected to the engine by belt drive.

5. The engine water pump according to claim 1, characterized in that, The engine water pump further includes a temperature sensor, which is installed at the liquid outlet end of the engine water circulation system for detecting the liquid temperature at the liquid outlet end of the engine water circulation system; the drive member drives the moving position of the valve body according to the liquid temperature to adjust the coolant flow rate in the branch water flow passage.

6. The engine water pump according to claim 3, wherein, The drive member includes a drive motor, a drive rotor and a steering head; the shaft head of the drive motor is connected to the drive rotor and can drive the drive rotor to rotate; the drive rotor is slidably connected to the steering head and can drive the steering head to perform a linear motion.

7. The engine water pump according to claim 6, characterized in that, The valve body includes a valve stem and a valve core. One end of the valve stem is connected to the valve core, and the other end is connected to the steering head; the valve core is slidably connected to the second annular sealing boss; the drive rotor is slidably connected to the steering head and can drive the steering head, the valve stem and the valve core, and the valve core performs a linear motion on the inner wall of the second annular sealing boss.

8. The engine water pump according to claim 7, wherein, A sealing ring is further provided at the joint of the valve stem and the branch water flow passage, and the sealing ring is tightly connected to the branch water flow passage and the valve stem.

9. The engine water pump according to claim 1, characterized in that, Sealing grooves are provided at both the liquid inlet and the liquid outlet of the water pump housing, and the sealing grooves are used for installing sealing rings.

10. A vehicle, characterized in that, The vehicle includes the engine water pump according to any one of claims 1 to 9.

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