Water pump and thermal management system having the same, vehicle

Abstract

The utility model discloses a water pump and have its heat management system, vehicle, water pump includes: the casing of first recessed cavity is defined, the pump shell of second recessed cavity is defined, and first recessed cavity and second recessed cavity constitute the pump cavity with liquid outlet, and the communicating place of first recessed cavity and liquid outlet is equipped with first separate tongue, and the communicating place of second recessed cavity and liquid outlet is equipped with second separate tongue, on the circumference of pump cavity, the connecting end of first separate tongue is connected with casing and the end face of free end is first tongue face, and the connecting end of second separate tongue is connected with pump shell and the end face of free end is second tongue face, in the direction of axially away from second tongue face, first tongue face is inclined in the direction of connecting end to free end along the circumference, and / or, in the direction of axially away from first tongue face, second tongue face is inclined in the direction of connecting end to free end along the circumference. Water pump according to the utility model embodiment has the advantages of reducing the pressure pulsation produced when the water is thrown from the impeller assembly, reducing the vibration and noise of water pump operation etc.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and more specifically, to a water pump and a thermal management system thereon, and a vehicle. Background Technology

[0002] Water pumps, which use controllers to adjust motor speed and flow rate to meet the requirements of cooling systems, are increasingly widely used. However, due to their high speed and limited structural space, water pumps suffer from problems such as low efficiency and high noise. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a water pump that has advantages such as reducing pressure pulsation generated when water is thrown out from the impeller assembly, reducing vibration and noise during pump operation, and improving the reliability and efficiency of the pump during operation.

[0004] This utility model also proposes a thermal management system having the aforementioned water pump.

[0005] This utility model also proposes a vehicle having the aforementioned thermal management system.

[0006] A water pump according to a first aspect embodiment of the present invention includes: a housing, one end of which defines a first cavity; and a pump housing, which covers one end of the housing and defines a second cavity on the side of the pump housing facing the housing. The first cavity and the second cavity constitute a pump chamber for accommodating an impeller assembly. The pump chamber has an inlet and an outlet. A first tongue is provided at the connection between the first cavity and the outlet, and a second tongue is provided at the connection between the second cavity and the outlet. In the circumferential direction of the pump chamber, the end face of the first tongue, which is connected to the housing and has a free end, is a first tongue surface. The end face of the second tongue, which is connected to the pump housing and has a free end, is a second tongue surface. The first tongue surface and the second tongue surface are arranged axially. In the direction axially away from the second tongue surface, the first tongue surface is inclined circumferentially from the connecting end to the free end. And / or, in the direction axially away from the first tongue surface, the second tongue surface is inclined circumferentially from the connecting end to the free end.

[0007] The water pump according to the present invention has advantages such as reducing pressure pulsation generated when water is thrown out from the impeller assembly, reducing vibration and noise during water pump operation, and improving the reliability and efficiency of water pump operation.

[0008] In addition, the water pump according to the above embodiments of this utility model may also have the following additional technical features:

[0009] According to some embodiments of the present invention, in the axial direction of the impeller assembly, the first tongue extends obliquely from one end to the other along a straight line; and / or, in the axial direction of the impeller assembly, the second tongue extends obliquely from one end to the other along a straight line.

[0010] According to some embodiments of the present invention, in the axial direction of the impeller assembly, the first tongue extends from one end to the other along a convex or concave arc; and / or, in the axial direction of the impeller assembly, the second tongue extends from one end to the other along a convex or concave arc.

[0011] According to some embodiments of the present invention, in the axial direction of the impeller assembly, the first tongue extends from one end to the other along a combination of at least one straight line and a curve; and / or, in the axial direction of the impeller assembly, the second tongue extends from one end to the other along a combination of at least one straight line and a curve.

[0012] According to some embodiments of the present invention, the line connecting the two ends of the first tongue surface in the axial direction is the first connecting line, the line connecting the two ends of the second tongue surface in the axial direction is the second connecting line, and the angle between the first connecting line and the second connecting line is less than 175°.

[0013] According to some optional embodiments of the present invention, the angle between the first connecting line and the axis of the impeller assembly is α1, and the angle between the second connecting line and the axis of the impeller assembly is α2, wherein α1 and α2 are equal or unequal.

[0014] According to some embodiments of the present invention, the axial projection positions of the ends of the first tongue surface and the second tongue surface that are far apart from each other coincide along the axial direction; the axial projection positions of the ends of the first tongue surface and the second tongue surface that are close to each other coincide along the axial direction.

[0015] According to some embodiments of the present invention, the axial projection positions of the ends of the first tongue surface and the second tongue surface that are far apart from each other coincide along the axial direction; the axial projection positions of the ends of the first tongue surface and the second tongue surface that are close to each other are staggered along the circumferential direction.

[0016] A thermal management system is provided according to a second aspect of the present invention, the thermal management system including the water pump described in the first aspect of the present invention.

[0017] The thermal management system according to the embodiments of the present invention, by utilizing the water pump described in the first aspect of the present invention, has advantages such as reducing pressure pulsation generated when water is thrown out from the impeller assembly, reducing vibration and noise during water pump operation, and improving the reliability and efficiency of water pump operation.

[0018] A vehicle is provided according to a third aspect of the present invention, the vehicle including a thermal management system according to a second aspect of the present invention.

[0019] The vehicle according to the present invention, by utilizing the thermal management system described in the second aspect of the present invention, has advantages such as reducing pressure pulsation generated when water is thrown out from the impeller assembly, reducing vibration and noise during water pump operation, and improving the reliability and efficiency of water pump operation.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of a water pump according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the casing structure according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the pump casing according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the first tongue and the second tongue according to an embodiment of the present utility model, wherein both the first tongue surface and the second tongue surface extend along a straight line;

[0026] Figure 5 This is a schematic diagram of the structure of the first tongue and the second tongue according to an embodiment of the present utility model, wherein both the first tongue surface and the second tongue surface extend along the curve;

[0027] Figure 6 This is a schematic diagram of the structure of the water pump and test pipeline according to an embodiment of the present utility model;

[0028] Figure 7 This is a structural schematic diagram of a vehicle according to an embodiment of the present utility model.

[0029] Reference numerals: 1000, vehicle; 1, water pump; 10, housing; 11, first cavity; 12, first tongue; 121, first tongue surface; 20, pump housing; 21, second cavity; 22, second tongue; 221, second tongue surface;

[0030] L1, the first connection; L2, the second connection;

[0031] 31. Liquid inlet; 32. Liquid outlet; 40. Impeller assembly; 50. Test pipeline. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] The water pump 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0034] like Figures 1-3 As shown, the water pump 1 according to an embodiment of the present invention includes a housing 10 and a pump housing 20.

[0035] One end of the housing 10 defines a first cavity 11. The pump housing 20 covers one end of the housing 10 and defines a second cavity 21 on the side of the pump housing 20 facing the housing 10. The first cavity 11 and the second cavity 21 constitute a pump chamber. The pump chamber is used to accommodate the impeller assembly 40. The pump chamber is provided with an inlet 31 and an outlet 32. The impeller assembly 40 is used to pressurize the liquid to drive the liquid to enter the pump chamber from the inlet 31 and flow to a designated area from the outlet 32.

[0036] A first tongue 12 is provided at the connection between the first cavity 11 and the outlet 32, and a second tongue 22 is provided at the connection between the second cavity 21 and the outlet 32. In the circumferential direction of the pump cavity, the connecting end of the first tongue 12 is connected to the housing 10 and the end face of the free end is the first tongue surface 121, and the connecting end of the second tongue 22 is connected to the pump housing 20 and the end face of the free end is the second tongue surface 221. The first tongue surface 121 and the second tongue surface 221 are arranged axially.

[0037] By setting the first tongue 12 and the second tongue 22, the phenomenon of water vaporization and cavitation caused by water swirling when it flows into the liquid outlet 32 ​​can be avoided, which helps to improve the service life of the water pump 1 and the efficiency of the water pump 1 when discharging liquid.

[0038] In some embodiments, such as Figure 1 , Figure 2As shown, in the direction away from the second tongue surface 221 along the axial direction, the first tongue surface 121 is inclined circumferentially from the connecting end to the free end. This makes the first tongue surface 121 form a certain angle with the rotation axis of the impeller assembly 40 when water flows out of the pump chamber from the outlet 32. This changes the shape of the first tongue surface 121 of the first tongue 12, and thus, when the impeller assembly 40 drives the water to flow to the outlet 32, the time when the liquid impacts the first tongue 12 is staggered in the length direction of the first tongue surface 121. This reduces the pressure pulsation generated when the water thrown out of the impeller assembly 40 impacts the first tongue 12, reduces the vibration and noise of the water pump 1 during operation, and improves the reliability and efficiency of the water pump 1 during operation.

[0039] Furthermore, making the first tongue surface 121 inclined circumferentially from the connecting end to the free end in a direction away from the second tongue surface 221 will not increase the molding difficulty, thus making it easier to achieve and easier to demold.

[0040] In some embodiments, the second tongue 221 is inclined circumferentially from the connecting end to the free end in a direction axially away from the first tongue 121. This causes the second tongue 221 to form a certain angle with the rotation axis of the impeller assembly 40 when water flows out of the pump chamber from the outlet 32. This changes the shape of the second tongue 221 of the second tongue 22, thereby staggering the time when the impeller assembly 40 drives the water to flow to the outlet 32, thus reducing the pressure pulsation generated when water is thrown out of the impeller assembly 40 and impacts the second tongue 22. This reduces the vibration and noise of the pump 1 during operation and improves the reliability and efficiency of the pump 1.

[0041] Furthermore, making the second tongue surface 221 inclined circumferentially from the connecting end to the free end in a direction away from the first tongue surface 121 will not increase the molding difficulty, thus making it easier to achieve and easier to demold.

[0042] Therefore, the water pump 1 according to the present utility model has the advantages of reducing pressure pulsation when water is thrown out from the impeller assembly 40, reducing vibration and noise during operation of the water pump 1, and improving the reliability and efficiency of the water pump 1 during operation.

[0043] The water pump 1 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0044] In some specific embodiments of this utility model, such as Figures 1-3 As shown, the water pump 1 includes a housing 10 and a pump housing 20.

[0045] In some embodiments of this utility model, such as Figure 4As shown, in the axial direction of the impeller assembly 40, the first tongue 121 extends obliquely from one end to the other along a straight line to change the shape of the first tongue 121, so that the time of liquid impacting the first tongue 12 is staggered in the length direction of the first tongue 121, thereby reducing the pressure pulsation generated when water is thrown out from the impeller assembly 40 and impacts the first tongue 12, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0046] Furthermore, this design reduces the molding difficulty of the first tongue surface 121, making it easier to form the first tongue surface 121 on the first partition tongue 12 and facilitating demolding. This also does not affect the injection molding process, does not increase costs, and does not increase assembly difficulty.

[0047] Specifically, in the direction axially away from the second tongue surface 221, the first tongue surface 121 extends circumferentially from the connecting end to the free end in a straight line, so that the first tongue surface 121 forms a certain angle with the rotation axis of the impeller assembly 40. This changes the shape of the first tongue surface 121 of the first tongue 12, thereby staggering the time when the impeller assembly 40 drives the water flow to the outlet 32, so that the liquid impacts the first tongue 12 at different times along the length of the first tongue surface 121. This reduces the pressure pulsation generated when the water thrown out of the impeller assembly 40 impacts the first tongue 12, reduces the vibration and noise of the water pump 1 during operation, and improves the reliability and efficiency of the water pump 1 during operation.

[0048] In some embodiments, such as Figure 1 , Figure 4 As shown, the pump chamber extends axially in the vertical direction. The pump casing 20 covers the upper end of the housing 10. The second tongue 221 is located above the first tongue 121. One end of the first tongue 121 is close to the connecting end, and the other end of the first tongue 121 is close to the free end. One end of the first tongue 121 is located above the other end. The first tongue 121 extends downward in a straight line from one end to the other end, so that when the impeller assembly 40 drives the water flow to the outlet 32, the time of liquid impacting the first tongue 12 is staggered in the length direction of the first tongue 121. This reduces the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the first tongue 12, reduces the vibration and noise of the water pump 1 during operation, and improves the reliability and efficiency of the water pump 1 during operation.

[0049] In some embodiments of this utility model, such as Figure 4 As shown, in the axial direction of the impeller assembly 40, the second tongue 221 extends obliquely from one end to the other along a straight line to change the shape of the second tongue 221, so that the time of liquid impacting the second tongue 22 is staggered in the length direction of the second tongue 221, thereby reducing the pressure pulsation generated when water is thrown out from the impeller assembly 40 and impacts the second tongue 22, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0050] Furthermore, this design reduces the molding difficulty of the second tongue surface 221, thereby facilitating the formation of the first tongue surface 121 on the second partition tongue 22 and simplifying demolding. This process does not affect the injection molding process, does not increase costs, and does not add any assembly difficulty.

[0051] Specifically, in the direction axially away from the first tongue 121, the second tongue 221 extends obliquely in a straight line from the connecting end to the free end in the circumferential direction, so that the second tongue 221 forms a certain angle with the rotation axis of the impeller assembly 40. This changes the shape of the second tongue 221 of the second tongue 22, thereby staggering the time when the impeller assembly 40 drives the water flow to the outlet 32, thus reducing the pressure pulsation generated when the water thrown out of the impeller assembly 40 impacts the second tongue 22, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0052] In some embodiments, such as Figure 1 , Figure 4 As shown, the pump chamber extends axially in the vertical direction. The pump casing 20 covers the upper end of the housing 10. The first tongue 121 is located below the second tongue 221. One end of the second tongue 221 is close to the connecting end, and the other end of the second tongue 221 is close to the free end. One end of the second tongue 221 is located below the other end. The second tongue 221 extends upward in a straight line from one end to the other end, so that when the impeller assembly 40 drives the water flow to the outlet 32, the time when the liquid impacts the second tongue 22 is staggered in the length direction of the second tongue 221. This reduces the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the second tongue 22, reduces the vibration and noise of the water pump 1 during operation, and improves the reliability and efficiency of the water pump 1 during operation.

[0053] In some embodiments of this utility model, such as Figure 5 (a) Figure 5 As shown in (b), in the axial direction of the impeller assembly 40, the first tongue 121 extends from one end to the other along a convex or concave arc to change the shape of the first tongue 121, so that the time of liquid impacting the first tongue 12 is staggered in the length direction of the first tongue 121, thereby reducing the pressure pulsation generated when water is thrown out from the impeller assembly 40 and impacts the first tongue 12, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0054] In some embodiments, the pump chamber extends axially in the vertical direction, the pump housing 20 covers the upper end of the housing 10, the second tongue 221 is located above the first tongue 121, one end of the first tongue 121 is close to the connecting end, the other end of the first tongue 121 is close to the free end, and one end of the first tongue 121 is located above the other end.

[0055] In some examples, such as Figure 5 As shown in (a), the first tongue 121 extends downward along a convex arc from one end to the other end, so that when the impeller assembly 40 drives the water flow to the outlet 32, the time when the liquid impacts the first tongue 12 is staggered in the length direction of the first tongue 121, thereby reducing the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the first tongue 12, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0056] In other examples, such as Figure 5 As shown in (b), the first tongue 121 extends downward along a concave arc from one end to the other end, so that when the impeller assembly 40 drives the water flow to the outlet 32, the time when the liquid impacts the first tongue 12 is staggered in the length direction of the first tongue 121, thereby reducing the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the first tongue 12, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0057] In some embodiments of this utility model, such as Figure 5 (a) Figure 5 As shown in (b), in the axial direction of the impeller assembly 40, the second tongue 221 extends from one end to the other along a convex or concave arc to change the shape of the second tongue 221, so that the time of liquid impacting the second tongue 22 is staggered in the length direction of the second tongue 221, thereby reducing the pressure pulsation generated when water is thrown out from the impeller assembly 40 and impacts the second tongue 22, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0058] In some embodiments, the pump chamber extends axially in the vertical direction, the pump housing 20 covers the upper end of the housing 10, the second tongue 221 is located above the first tongue 121, one end of the second tongue 221 is close to the connecting end, the other end of the second tongue 221 is close to the free end, and one end of the second tongue 221 is located below the other end.

[0059] In some examples, such as Figure 5 As shown in (a), the second tongue 221 extends upward along a convex arc from one end to the other end, so that when the impeller assembly 40 drives the water flow to the outlet 32, the time when the liquid impacts the second tongue 22 is staggered in the length direction of the second tongue 221, thereby reducing the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the second tongue 22, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0060] In other examples, such as Figure 5As shown in (b), the second tongue 221 extends upward along a concave arc from one end to the other end, so that when the impeller assembly 40 drives the water flow to the outlet 32, the time when the liquid impacts the second tongue 22 is staggered in the length direction of the second tongue 221, thereby reducing the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the second tongue 22, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0061] In some embodiments of this utility model, such as Figure 5 As shown in (c), in the axial direction of the impeller assembly 40, the first tongue 121 extends from one end to the other along a combination of at least one straight line and curve to change the shape of the first tongue 121, so that the time of liquid impacting the first tongue 12 is staggered in the length direction of the first tongue 121, thereby reducing the pressure pulsation generated when water is thrown out from the impeller assembly 40 and impacts the first tongue 12, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0062] At the same time, the first tongue 121 is extended from one end to the other along at least one combination of a straight line and a curve, which facilitates the length of the first tongue 121, thereby significantly reducing the pressure pulsation generated when water is thrown out from the impeller assembly 40 and impacts the first tongue 12, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0063] In some embodiments, such as Figure 5 As shown in (c), the pump chamber extends axially in the vertical direction, the pump housing 20 covers the upper end of the housing 10, the second tongue 221 is located above the first tongue 121, one end of the first tongue 121 is close to the connecting end, the other end of the first tongue 121 is close to the free end, and one end of the first tongue 121 is located above the other end.

[0064] The first tongue 121 extends downward along a wavy line from one end to the other so that when the impeller assembly 40 drives the water flow to the outlet 32, the time when the liquid impacts the first tongue 12 is staggered in the length direction of the first tongue 121, thereby reducing the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the first tongue 12, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0065] In some embodiments of this utility model, such as Figure 5As shown in (c), in the axial direction of the impeller assembly 40, the second tongue 221 extends from one end to the other along at least one combination of a straight line and a curve to change the shape of the second tongue 221, so that the time of liquid impacting the second tongue 22 is staggered in the length direction of the second tongue 221. This reduces the pressure pulsation generated when water thrown from the impeller assembly 40 impacts the second tongue 22, reduces the vibration and noise of the water pump 1 during operation, and improves the reliability and efficiency of the water pump 1 during operation.

[0066] At the same time, the second tongue 221 is extended from one end to the other along at least one combination of a straight line and a curve, which facilitates the extension of the length of the second tongue 221, thereby significantly reducing the pressure pulsation generated when water is thrown out from the impeller assembly 40 and impacts the second tongue 22, reducing the vibration and noise of the water pump 1 during operation, and improving the reliability and efficiency of the water pump 1 during operation.

[0067] In some embodiments, such as Figure 5 As shown in (c), the pump chamber extends axially in the vertical direction (it should be understood that the above direction is only for the convenience of describing the attached drawings and does not limit the actual installation position and direction of the water pump 1). The pump casing 20 is covered on the upper end of the housing 10. The second tongue 221 is located above the first tongue 121. One end of the second tongue 221 is close to the connecting end, and the other end of the second tongue 221 is close to the free end. One end of the second tongue 221 is located below the other end.

[0068] The second tongue 221 extends upward along a wavy line from one end to the other so that when the impeller assembly 40 drives the water flow to the outlet 32, the time when the liquid impacts the second tongue 22 is staggered in the length direction of the second tongue 221. This reduces the pressure pulsation generated when the water thrown out of the impeller assembly 40 impacts the second tongue 22, reduces the vibration and noise of the water pump 1 during operation, and improves the reliability and efficiency of the water pump 1 during operation.

[0069] In some embodiments of this utility model, such as Figure 4 As shown, the line connecting the two ends of the first tongue surface 121 in the axial direction is the first connecting line L1, and the line connecting the two ends of the second tongue surface 221 in the axial direction is the second connecting line L2. The angle β between the first connecting line L1 and the second connecting line L2 is less than 175°, so as to better disperse the liquid impacting the first tongue surface 121 and the second tongue surface 221, thereby staggering the time of liquid impacting the second tongue 22 in the length direction of the second tongue surface 221. This reduces the pressure pulsation generated when water is thrown out from the impeller assembly 40 and impacts the second tongue 22, reduces the vibration and noise of the water pump 1 during operation, and improves the reliability and efficiency of the water pump 1 during operation.

[0070] In some optional embodiments of this utility model, such as Figure 4As shown, the angle between the first line L1 and the axis of the impeller assembly 40 is α1, and the angle between the second line L2 and the axis of the impeller assembly 40 is α2.

[0071] In some embodiments, α1 and α2 are equal, which ensures good axial symmetry between the first tongue 12 and the second tongue 22, balancing the water flow impacting the first tongue surface 121 and the second tongue surface 221. This allows the water flow at different axial positions within the pump chamber to be dispersed by the first tongue surface 121 and the second tongue surface 221. By dispersing the water flow impacting the first tongue surface 121 and the second tongue surface 221, the pressure pulsation generated when water thrown from the impeller assembly 40 impacts the first tongue 12 and the second tongue surface 22 can be reduced. By making α1 and α2 equal, it is easier to achieve a good effect of reducing pressure pulsation on the water flow at different axial positions within the pump chamber, thereby reducing the vibration and noise of the water pump 1 during operation and improving the reliability and efficiency of the water pump 1.

[0072] In other embodiments, α1 and α2 are not equal, which helps to reduce the difficulty of processing and the requirements for assembly accuracy.

[0073] Furthermore, the fact that α1 and α2 are not equal allows the first tongue surface 121 and the second tongue surface 221 to have different effects on dispersing the liquid impact force. Specifically, the water flow rate varies slightly at different positions along the pump cavity axis. For different flow rates, the magnitudes of α1 and α2 are adaptively matched to the water flow rate at the corresponding position to better reduce pressure pulsation.

[0074] In some embodiments of this utility model, such as Figure 4 (a) Figure 5 As shown, the axial projection positions of the far ends of the first tongue surface 121 and the second tongue surface 221 coincide along the axial direction, and the axial projection positions of the near ends of the first tongue surface 121 and the second tongue surface 221 coincide along the axial direction, so as to adaptively reduce the pressure pulsation of the water pump 1 at a specific flow rate.

[0075] Specifically, when the flow rates of different water pumps 1 are different, the first tongue 121 and the second tongue 221 with different shapes have different effects on reducing pressure pulsation. This embodiment can better reduce pressure pulsation when the water pump 1 is at a specific flow rate, and better stagger the time of impact on the first tongue 121 along the length direction of the first tongue 121, and stagger the time of impact on the second tongue 22 along the length direction of the second tongue 221. This can fully reduce the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the first tongue 12 and the second tongue 22, reduce the vibration and noise of the water pump 1 during operation, and improve the reliability and efficiency of the water pump 1 during operation.

[0076] In some embodiments, such as Figure 4As shown in (a), the first tongue surface 121 extends downward along a straight line from one end to the other, and the second tongue surface 221 extends upward along a straight line from one end to the other, defining a "v" shape.

[0077] In some embodiments, such as Figure 5 As shown in (a), the first tongue surface 121 extends downward along a convex arc from one end to the other, and the second tongue surface 221 extends upward along a convex arc from one end to the other.

[0078] In some embodiments, such as Figure 5 As shown in (b), the first tongue surface 121 extends downward along a concave arc from one end to the other, and the second tongue surface 221 extends upward along a concave arc from one end to the other.

[0079] In some embodiments, such as Figure 5 As shown in (c), the first tongue 121 extends downward along the wavy line from one end to the other, and the second tongue 221 extends upward along the wavy line from one end to the other.

[0080] In some embodiments, such as Figure 4 As shown in (a), the line connecting the two ends of the first tongue 121 in the axial direction is the first connecting line L1, and the line connecting the two ends of the second tongue 221 in the axial direction is the second connecting line L2. The angle between the first connecting line L1 and the second connecting line L2 is β. The angle between the first connecting line L1 and the axis of the impeller assembly 40 is α1, and the angle between the second connecting line L2 and the axis of the impeller assembly 40 is α2. α1 is equal to α2.

[0081] To demonstrate that improvements to the first tongue surface 121 and the second tongue surface 221 can enhance the reliability and efficiency of the pump 1, an experiment was conducted to investigate the changes in head and hydraulic efficiency as the angle β between the first connecting line L1 and the second connecting line L2 changed.

[0082] Specifically, the first line L1 and the second line L2 form a "v" shape. When the flow rate of pump 1 is 30L / min, the measured head and hydraulic efficiency will be different when the included angle β between the first line L1 and the second line L2 is different. The hydraulic efficiency of pump 1 refers to the ratio of the output power of pump 1 to the pump shaft power.

[0083] This leads to a comparative example, in which a water pump defines a pump chamber, and a tongue is provided near the outlet of the pump chamber. The free end of the tongue defines a tongue surface, which extends axially.

[0084] Comparative Example 124.2 52.55％ β＝110° 125.29 53.05％ β＝90° 135.18 57.46％ β＝70° 138.86 58.71％

[0085] Table a

[0086] The data in Table a can be obtained through experiments. Analyzing the data in Table a, it can be intuitively seen that, compared with the comparative example, this application can improve the hydraulic efficiency of the water pump 1 by changing the shape of the first tongue surface 121 and the second tongue surface 221, thereby facilitating the reduction of vibration and noise during the operation of the water pump 1 and improving the reliability and efficiency of the water pump 1 during operation.

[0087] For the included angle β, as the angle β decreases, both the head and efficiency gradually increase, and the effect is very obvious.

[0088] To demonstrate that improvements to the first tongue surface 121 and the second tongue surface 221 can reduce the pressure pulsation generated during the operation of the water pump 1, an experiment was conducted to observe the change in pressure pulsation at the same location as the angle β between the first line L1 and the second line L2 changed.

[0089] Specifically, such as Figure 4 (a) Figure 6 As shown, the first line L1 and the second line L2 form a "v" shape. The flow rate of the water pump 1 is 30 L / min. When the angle β between the first line L1 and the second line L2 is different, the pressure pulsation at position P1 is measured as M1. Position P1 is the position of the pump casing 20 near the outlet. The pressure pulsation at position P2 is measured as M2. Position P2 is the position of the downstream area of ​​the outlet 32.

[0090] This leads to a comparative example. In the comparative example, the water pump is positioned to define the pump chamber, and the water pump flow rate is 30 L / min. A baffle is installed near the outlet of the pump chamber. The pressure pulsation at position P1 in the comparative example is measured as K1, and the pressure pulsation at position P2 is measured as K2.

[0091] β＝110° 44.80％ 87.91％ β＝90° 42.42％ 78.16％ β＝70° 36.77％ 75.16％

[0092] Table b

[0093] The data in Table b can be obtained through experiments. Analyzing the data in Table b, it can be intuitively seen that, compared with the comparative example, this application can reduce pressure pulsation by changing the shape of the first tongue surface 121 and the second tongue surface 221, thereby facilitating the reduction of vibration and noise during the operation of the water pump 1 and improving the reliability and efficiency of the water pump 1 during operation.

[0094] For the included angle β, as the angle β decreases, the pressure pulsation value at the relative position gradually decreases.

[0095] It should be noted that when actually measuring the pressure pulsation at a specified location, it is not possible to directly measure the pressure pulsation in the pump fluid domain at the corresponding location. The pump fluid domain refers to the shape of the fluid inside the pump chamber. The pressure pulsation in the corresponding pump fluid domain can be obtained by measuring the pressure pulsation at position P1 near the outlet 32 ​​of the pump casing 20 and performing simulation analysis.

[0096] The pressure pulsation at position P2 downstream of outlet 32 ​​was measured, and the corresponding pressure pulsation in the pump fluid domain was obtained through simulation analysis.

[0097] The positions of P1 and P2 are as follows: Figure 6 As shown, a pressure sensor can be installed on the outside of the housing 10 and / or the pump housing 20 of the water pump 1 to measure the pressure pulsation at position P1, and a pressure sensor can be installed on the test pipeline 50 to measure the pressure pulsation at position P2.

[0098] In some embodiments of this utility model, such as Figure 4 As shown in (c), the axial projections of the ends of the first tongue 121 and the second tongue 221 that are far apart from each other coincide along the axial direction; the axially close ends of the first tongue 121 and the second tongue 221 are arranged circumferentially staggered to adaptively reduce the pressure pulsation of the water pump 1 at a specific flow rate.

[0099] Specifically, when the flow rates of different water pumps 1 are different, the first tongue 121 and the second tongue 221 with different shapes have different effects on reducing pressure pulsation. This embodiment can better reduce pressure pulsation when the water pump 1 is at a specific flow rate, and better stagger the time of impact on the first tongue 121 along the length direction of the first tongue 121, and stagger the time of impact on the second tongue 22 along the length direction of the second tongue 221. This can fully reduce the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the first tongue 12 and the second tongue 22, reduce the vibration and noise of the water pump 1 during operation, and improve the reliability and efficiency of the water pump 1 during operation.

[0100] In some embodiments of this utility model, such as Figure 4 As shown in (b), the ends of the first tongue 121 and the second tongue 221 that are axially far apart from each other are arranged circumferentially staggered; the ends of the first tongue 121 and the second tongue 221 that are axially close to each other are arranged circumferentially staggered to adaptively reduce the pressure pulsation of the water pump 1 at a specific flow rate.

[0101] Specifically, when the flow rates of different water pumps 1 are different, the first tongue 121 and the second tongue 221 with different shapes have different effects on reducing pressure pulsation. This embodiment can better reduce pressure pulsation when the water pump 1 is at a specific flow rate, and better stagger the time of impact on the first tongue 121 along the length direction of the first tongue 121, and stagger the time of impact on the second tongue 22 along the length direction of the second tongue 221. This can fully reduce the pressure pulsation generated when the water thrown out from the impeller assembly 40 impacts the first tongue 12 and the second tongue 22, reduce the vibration and noise of the water pump 1 during operation, and improve the reliability and efficiency of the water pump 1 during operation.

[0102] In some embodiments of this utility model, the water pump 1 is an electronic water pump 1, the housing 10 defines a receiving cavity, the water pump 1 also includes a stator and a rotor, both of which are disposed in the receiving cavity, the stator is sleeved on the rotor, the stator and the rotor are coupled, the impeller assembly 40 includes an impeller, the impeller is rotatably disposed in the pump cavity, the impeller cooperates with the rotor, when the rotor is subjected to force and rotates, the rotor drives the impeller to rotate, so as to use the impeller to pressurize the liquid, thereby driving the liquid to enter the pump cavity from the inlet 31 and flow to the designated area from the outlet 32.

[0103] The following describes a thermal management system according to an embodiment of the present invention. The thermal management system according to an embodiment of the present invention includes a water pump 1 according to the above embodiment of the present invention.

[0104] Since the water pump 1 according to the present invention has the above-mentioned beneficial technical effects, the thermal management system according to the present invention has the advantages of reducing pressure pulsation generated when water is thrown out from the impeller assembly 40, reducing vibration and noise during operation of the water pump 1, and improving the reliability and efficiency of the water pump 1 during operation.

[0105] In some embodiments, the thermal management system is an important component for regulating the automotive cabin environment (temperature, humidity, etc.) and the working environment of other parts. The thermal management system mainly includes valves, heat exchangers, compressors, pumps, and integrated modules. The pumps include, for example, water pump 1 or other water pumps 1. The thermal management system contains a circulating refrigerant, which may be carbon dioxide refrigerant, etc.

[0106] In some embodiments, such as Figure 7 As shown, water pump 1 is an electronic water pump. The electronic water pump can be used in the thermal management system of vehicle 1000. The thermal management system is an important component for regulating the environment of the car cabin (temperature, humidity, etc.) and the working environment of other parts. The thermal management system of vehicle 1000 mainly includes: valves, heat exchangers, compressors, pumps and integrated modules, etc. The pumps include, for example, electronic water pumps or other water pumps. The thermal management system has a circulating refrigerant, which can be liquid coolant or carbon dioxide refrigerant, etc.

[0107] The vehicle 1000 according to an embodiment of the present invention is described below. The vehicle 1000 according to an embodiment of the present invention includes a thermal management system according to the above embodiment of the present invention.

[0108] Since the thermal management system according to the present utility model has the above-mentioned beneficial technical effects, the vehicle 1000 according to the present utility model has the advantages of reducing pressure pulsation generated when water is thrown out from the impeller assembly 40, reducing vibration and noise during operation of the water pump 1, and improving the reliability and efficiency of the water pump 1 during operation.

[0109] In this embodiment, vehicle 1000 can be a new energy vehicle. In some embodiments, the new energy vehicle can be a pure electric vehicle with an electric motor as the main driving force. In other embodiments, the new energy vehicle can also be a hybrid vehicle with both an internal combustion engine and an electric motor as the main driving force. Regarding the internal combustion engine and electric motor mentioned in the above embodiments that provide driving power for the new energy vehicle, the internal combustion engine can use gasoline, diesel, hydrogen, etc. as fuel, and the way to provide electrical energy to the electric motor can be a power battery, hydrogen fuel cell, etc., without special limitation. It should be noted that this is merely an exemplary description of the structure of new energy vehicles, etc., and is not intended to limit the protection scope of this utility model.

[0110] Other components and operations of the water pump 1, thermal management system, and vehicle 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0111] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them.

[0112] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0113] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0114] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0115] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water pump, characterized in that, include: A housing, one end of which defines a first recess; A pump housing is provided at one end of the machine housing, and a second recess is defined on the side of the pump housing facing the machine housing. The first recess and the second recess constitute a pump chamber for accommodating an impeller assembly. The pump chamber is provided with an inlet and an outlet. A first tongue is provided at the connection between the first recess and the outlet, and a second tongue is provided at the connection between the second recess and the outlet. In the circumferential direction of the pump chamber, the connecting end of the first tongue is connected to the machine housing and the end face of its free end is the first tongue surface. The connecting end of the second tongue is connected to the pump housing and the end face of its free end is the second tongue surface. The first tongue surface and the second tongue surface are arranged axially. Wherein, in the direction away from the second tongue surface along the axial direction, the first tongue surface is inclined circumferentially from the connecting end to the free end; and / or, in the direction away from the first tongue surface along the axial direction, the second tongue surface is inclined circumferentially from the connecting end to the free end.

2. The water pump according to claim 1, characterized in that, In the axial direction of the impeller assembly, the first tongue extends obliquely in a straight line from one end to the other; and / or, In the axial direction of the impeller assembly, the second tongue extends obliquely from one end to the other in a straight line.

3. The water pump according to claim 1, characterized in that, In the axial direction of the impeller assembly, the first tongue extends from one end to the other along a convex or concave arc; and / or, In the axial direction of the impeller assembly, the second tongue extends from one end to the other along a convex or concave arc.

4. The water pump according to claim 1, characterized in that, In the axial direction of the impeller assembly, the first tongue extends from one end to the other along a combination of at least one straight line and a curve; and / or, In the axial direction of the impeller assembly, the second tongue extends from one end to the other along a combination of at least one straight line and a curve.

5. The water pump according to claim 1, characterized in that, The line connecting the two ends of the first tongue surface in the axial direction is the first connecting line, and the line connecting the two ends of the second tongue surface in the axial direction is the second connecting line. The angle between the first connecting line and the second connecting line is less than 175°.

6. The water pump according to claim 5, characterized in that, The angle between the first connecting line and the axis of the impeller assembly is α1, and the angle between the second connecting line and the axis of the impeller assembly is α2. α1 and α2 may be equal or unequal.

7. The water pump according to claim 1, characterized in that, The axial projections of the far ends of the first tongue surface and the second tongue surface coincide along the axial direction; the axial projections of the near ends of the first tongue surface and the second tongue surface coincide along the axial direction.

8. The water pump according to claim 1, characterized in that, The axial projections of the ends of the first tongue surface and the second tongue surface that are far apart from each other coincide along the axial direction; the axial projections of the ends of the first tongue surface and the second tongue surface that are close to each other are staggered along the circumferential direction.

9. A thermal management system, characterized in that, Includes the water pump according to any one of claims 1-8.

10. A vehicle, characterized in that, Includes the thermal management system according to claim 9.

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