Volute, water pump and vehicle

Abstract

The utility model provides a volute, a water pump and a vehicle, the volute comprises a shell body and an electromagnetic valve, a communicating pipe section and a bypass pipe section are formed on the shell body, the bypass pipe section is provided with a first opening and a second opening, and the first opening communicates with the communicating pipe section; the electromagnetic valve is arranged on the bypass pipe section and is a normally-closed valve so as to close the first opening. Wherein the first opening is opened in the first direction, the second opening is opened in the second direction, an included angle is formed between the first direction and the second direction, a valve element of the electromagnetic valve moves in the first direction to close or open the first opening, and the communicating pipe section forms an inlet pipe section and / or an outlet pipe section. According to the volute, on the premise that flowing media are cut off in a one-way mode, potential safety hazards are eliminated, and reliability and safety are improved, the structure can be simplified, occupied space can be reduced, the arrangement difficulty of an electromagnetic valve can be reduced, and the production cost of a water pump can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to a volute, water pump and vehicle. BACKGROUND

[0002] The water pump is applied to the thermal management system of the vehicle, and is used for driving the circulation of the coolant in the coolant flow path of the thermal management system, so that temperature regulation of the power system, the passenger cabin and the like can be realized.

[0003] In the related art, the probability of backflow and overflow is reduced by arranging the electromagnetic valve in series with the water pump, but the technical problems of complex structure, great arrangement difficulty and high cost exist. UTILITY MODEL CONTENT

[0004] The utility model at least solves one of the technical problems in the prior art. To this end, one object of the utility model is to provide a volute integrating an electromagnetic valve, which can simplify the structure, reduce the arrangement difficulty and reduce the cost under the premise of improving the use experience.

[0005] The application further provides a water pump using the volute.

[0006] The application further provides a vehicle provided with the water pump.

[0007] In a first aspect, the application provides a volute, which comprises a shell body and an electromagnetic valve, the shell body is provided with a communication pipe section and a bypass pipe section, the bypass pipe section has a first port and a second port, the first port is in communication with the communication pipe section, the electromagnetic valve is arranged on the bypass pipe section and is configured as a normally closed valve to close the first port, wherein the first port is opened in a first direction, the second port is opened in a second direction, the first direction and the second direction have an included angle, the valve core of the electromagnetic valve moves in the first direction to close or open the first port, and the communication pipe section is formed as an inlet pipe section and / or an outlet pipe section.

[0008] According to the volute of the application, the communication pipe section and the bypass pipe section are arranged, and the electromagnetic valve is arranged on the bypass pipe section, so that the unidirectional cutoff of the flowing medium is realized to eliminate the safety hazard and improve the reliability and safety, the structure can be simplified, the space occupation is reduced, the arrangement difficulty of the electromagnetic valve is reduced, and the production cost of the water pump is reduced.

[0009] According to some embodiments of the present application, the bypass pipe section comprises a first pipe section extending in the first direction and a second pipe section extending in the second direction and connected with the first pipe section, the first port is formed in the first pipe section, and the second port is formed in the second pipe section, and the electromagnetic valve is arranged in the first pipe section.

[0010] According to some embodiments of the present application, the electromagnetic valve comprises a valve body connected with the first pipe section and having an inner cavity, and a valve core movably arranged in the inner cavity.

[0011] According to some embodiments of the present application, the valve core is in clearance fit with the inner cavity.

[0012] According to some embodiments of the present application, the valve body comprises a cover plate and a first protruding portion defining the inner cavity, and the electromagnetic valve further comprises a driving portion sleeved on the first protruding portion.

[0013] According to some embodiments of the present application, the electromagnetic valve further comprises a reset portion arranged in the first protruding portion and used for pushing the valve core to reset to a position of closing the first port.

[0014] According to some embodiments of the present application, the cover plate further comprises a second protruding portion arranged at one end of the communication pipe section and gradually reducing in outer diameter in a direction away from the first protruding portion to define a fitting guide portion.

[0015] According to some embodiments of the present application, a free end of the valve core is sleeved with a sealing member, and an inner wall of the first port is configured as a conical surface or an arc surface to fit the sealing member.

[0016] In a second aspect, the present application provides a water pump comprising a pump body and a volute which is detachably arranged in the pump body.

[0017] In a third aspect, the present application provides a vehicle comprising the water pump in the above embodiments.

[0018] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic view of a water pump according to embodiments of the present application;

[0021] Figure 2 is a perspective view of a volute according to an embodiment of the present application;

[0022] Figure 3 is a front view of a volute according to an embodiment of the present application;

[0023] Figure 4 is Figure 3 is a sectional view along the center line A-A;

[0024] Figure 5 is a side view of a volute according to an embodiment of the present application;

[0025] Figure 6 is Figure 5 is a sectional view along the center line B-B.

[0026] Reference signs:

[0027] a water pump 1000,

[0028] a volute 100, a pump body 200,

[0029] a shell body 10, a communication pipe section 11, an inlet pipe section 11a, an outlet pipe section 11b, a bypass pipe section 12, a first pipe section 121, a first port 1211, a second pipe section 122, a second port 1221,

[0030] a solenoid valve 20, a valve body 21, a cover plate 211, a first protruding part 212, a second protruding part 213, a valve core 22, a driving part 23, a reset part 24, a sealing member 25,

[0031] an inner cavity a,

[0032] a first direction X, a second direction Y. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms used in the description of the disclosed subject matter should not be interpreted as identifying key

[0035] Reference throughout this application to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, nor are they necessarily all mutually exclusive or alternative embodiments.

[0036] In the description of the application, it is necessary to note that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0037] The term "and / or" in this application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B together, and the existence of B alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0038] In the embodiments of the application, the same reference signs represent the same components, and for the sake of brevity, the detailed description of the same components is omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width and other dimensions of integrated devices, are only exemplary and should not constitute any limitation on the application.

[0039] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0040] In the description of the utility model, the first feature "above" or "below" the second feature can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween.

[0041] In the description of the utility model, the first feature "above", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height.

[0042] "Multiple" appearing in the present application refers to two or more (including two).

[0043] Water pumps are increasingly widely used in the field of vehicles, and are not only used for heat management of engines, heat management of battery devices, heat management of driving motors, etc., but also can be used for heat management of vehicle-mounted air conditioners to realize engine temperature regulation, battery temperature regulation, driving motor temperature regulation, passenger cabin temperature regulation, etc.

[0044] The temperature regulation pipelines corresponding to different devices or different assemblies can be switched in series, parallel, mixed parallel, etc. through integrated valve systems to realize linkage between engine temperature regulation, battery temperature regulation, driving motor temperature regulation and passenger cabin temperature regulation, such as battery device heating of cooling fluid with high temperature after engine cooling.

[0045] However, during switching of the interconnection relationship between multiple temperature regulation pipelines, adverse effects between different temperature regulation pipelines may occur, such as: in autumn and winter and under high air humidity, although the air conditioner is not turned on, the cooling fluid for temperature regulation of other devices or assemblies causes slight temperature change of the air outlet of the air conditioner of the passenger cabin, resulting in fogging of the vehicle window, discomfort and driving danger caused by local high temperature; the cooling fluid with high temperature after engine cooling acts on the driving motor, resulting in local overheating of the driving motor, etc.

[0046] Further, in the prior art, in order to reduce the above-mentioned safety hazards, a one-way cut-off function needs to be realized by a series electromagnetic valve, but the structure is complex, the cost is high, and the arrangement is difficult.

[0047] Based on this, the application provides a volute, which sets the electromagnetic valve on the bypass pipe segment of the volute, and the bypass pipe segment is connected with the communication pipe segment, and the communication pipe segment can be configured as an inlet pipe segment or an outlet pipe segment, so as to integrate the electromagnetic valve in the liquid inlet or liquid outlet area of the volute, simplify the structure, reduce the cost, and reduce the arrangement difficulty.

[0048] It should be noted that the electromagnetic valve can be in a normally closed state, which can use the existing plug-in part to realize power supply, without changing the vehicle wire harness, and can simplify the assembly process of the vehicle.

[0049] The volute 100, the water pump 1000 and the vehicle according to the embodiments of the application are described below with reference to the accompanying drawings. Figures 1-6 The volute 100, the water pump 1000 and the vehicle according to the embodiments of the application are described below with reference to the accompanying drawings.

[0050] Combined with Figure 1 and Figure 2 As shown in the drawings, the application provides a volute 100, which comprises a shell body 10 and an electromagnetic valve 20, the shell body 10 is formed with a communication pipe segment 11 and a bypass pipe segment 12, the bypass pipe segment 12 has a first port 1211 and a second port 1221, the first port 1211 is communicated with the communication pipe segment 11; the electromagnetic valve 20 is arranged on the bypass pipe segment 12 and is configured as a normally closed valve to close the first port 1211.

[0051] Specifically, the bypass pipe segment 12 is communicated with the communication pipe segment 11, the communication pipe segment 11 is formed as an inlet pipe segment 11a and / or an outlet pipe segment 11b, so that the volute 100 can have a liquid inlet one-way cut-off function and a liquid outlet one-way cut-off function, or the liquid inlet side and the liquid outlet side can realize one-way cut-off, and the electromagnetic valve 20 is integrated on the bypass pipe segment 12 of the volute 100, the volute 100 can be co-molded with at least part of the electromagnetic valve 20, which simplifies the design difficulty of the electromagnetic valve 20, reduces the arrangement difficulty and the installation cost of the electromagnetic valve 20, and reduces the cost of the water pump 1000 as a whole.

[0052] It can be understood that the first port 1211 is opened in the first direction, the second port 1221 is opened in the second direction, the first direction and the second direction have an included angle, and the spool 22 of the electromagnetic valve 20 moves in the first direction to close or open the first port 1211, so that the spool 22 of the normally closed electromagnetic valve 20 is opened and closed to realize the selectable communication between the communication pipe section 11 and the bypass pipe section 12, thereby realizing one-way cut-off, that is, when the electromagnetic valve 20 is not opened, the communication pipe section 11 and the bypass pipe section 12 are not communicated, and when the electromagnetic valve 20 is in a closed state, the first port 1211 and the second port 1221 have an included angle, so that the medium flowing out of the communication pipe section 11 can press against the spool 22, or the medium flowing into the communication pipe section 11 can press against the spool 22, so that the spool 22 stably and reliably closes the first port 1211 under the action of the electromagnetic valve 20 itself and the pressure of the medium flowing in the water pump 1000, thereby improving the working stability and reliability of the electromagnetic valve 20.

[0053] Further, by providing the electromagnetic valve 20, the water pump 1000 using the volute 100 of the present application can be provided with a one-way cut-off function, thereby enriching the functions of the water pump 1000 and improving the versatility of the water pump 1000. When the water pump 1000 is applied to a thermal management system of a vehicle, the temperature regulation effect of the thermal management system can be improved, the interference between sub-cooling channels in a parallel state in the thermal management system can be reduced, and the use experience can be improved.

[0054] According to the volute 100 of the present application, by providing the communication pipe section 11 and the bypass pipe section 12 and providing the electromagnetic valve 20 on the bypass pipe section 12, one-way cut-off of the flowing medium can be realized to eliminate safety hazards and improve reliability and safety, and the structure can be simplified, the space occupation can be reduced, the arrangement difficulty of the electromagnetic valve 20 can be reduced, and the production cost of the water pump 1000 can be reduced.

[0055] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , according to some embodiments of the present application, the bypass pipe section 12 includes a first pipe section 121 extending in a first direction and a second pipe section 122 extending in a second direction and connected to the first pipe section 121, the first port 1211 is formed on the first pipe section 121, the second port 1221 is formed on the second pipe section 122, and the electromagnetic valve 20 is provided on the first pipe section 121.

[0056] That is, the first pipe section 121 and the second pipe section 122 form the bypass pipe section 12 into a bent pipe section, so that the medium flowing out of the communication pipe section 11 first flows in the first direction to the first pipe section 121 and enters the second pipe section 122 extending in the second direction to be discharged through the second port 1221, or the medium flowing into the second pipe section 122 first flows in the second direction and then flows in the first direction to the first pipe section 121 to flow into the communication pipe section 11 through the first port 1211, and the electromagnetic valve 20 is arranged on the first pipe section 121.

[0057] In this way, the arrangement position of the electromagnetic valve 20 can be parallel to the extending direction of the inlet pipe section 11a, so as to reduce the space occupation of the volute 100 after integrating the electromagnetic valve 20, and make the opening and closing control of the electromagnetic valve 20 on the first port 1211 more stable and reliable.

[0058] As shown in Figure 3 and Figure 4 According to some embodiments of the present application, the electromagnetic valve 20 comprises a valve body 21 and a valve core 22, the valve body 21 is connected with the first pipe section 121, the valve body 21 has an inner cavity a, and the valve core 22 is movably arranged in the inner cavity a.

[0059] Specifically, the first pipe section 121 can be configured as a rectangular pipe or a circular pipe, the first pipe section 121 has the first port 1211 and an opening area opposite to the first port 1211 in the first direction, the valve body 21 covers the opening area, and the valve body 21 defines an inner cavity a, the valve core 22 is arranged in the inner cavity a and at least partially located inside the first pipe section 121.

[0060] In this way, the simplified design of the electromagnetic valve 20 can be realized, the movement of the valve core 22 is guided through the inner cavity a, and the valve core 22 is located inside the first pipe section 121, so that the components such as the magnetic conductive sleeve and the fixed iron core can be omitted, thereby reducing the cost and the difficulty of integrating the electromagnetic valve 20 with the volute 100.

[0061] It should be noted that at least part of the first pipe section 121 participates in defining at least part of the valve body 21, so that the volute 100 can be co-molded with at least part of the electromagnetic valve 20.

[0062] According to some embodiments of the present application, the valve core 22 is in clearance fit with the inner cavity a.

[0063] As shown in Figure 4 and Figure 6 The inner diameter of the inner cavity a is slightly larger than the outer diameter of the valve core 22, so that the valve core 22 is in clearance fit with the inner cavity a, for example, the clearance between them is 0.1 mm.

[0064] In this way, the working stability of the electromagnetic valve 20 can be improved, and the valve core 22 can be reduced to prolong the service life of the electromagnetic valve 20, and further improve the reliability and safety of the volute 100.

[0065] According to some embodiments of the present application, the valve body 21 comprises a cover plate 211 and a first protruding portion 212, the first protruding portion 212 defines an inner cavity a, and the electromagnetic valve 20 further comprises a driving portion 23, the driving portion 23 is sleeved on the first protruding portion 212.

[0066] Specifically, the driving portion 23 is configured as a magnetic induction coil and is adapted to generate a magnetic attraction force to drive the valve core 22 to move away from the first port 1211 in the inner cavity a defined by the first protruding portion 212 to open the first port 1211. By defining the inner cavity a by the first protruding portion 212, the movement of the valve core 22 can be guided, which can further improve the working stability and reliability of the electromagnetic valve 20. By sleeving the driving portion 23 on the first protruding portion 212, the space occupation of the electromagnetic valve 20 can be further reduced, and the arrangement difficulty of the electromagnetic valve 20 can be reduced.

[0067] It should be noted that the movement stroke of the valve core 22 in the first pipe section 121 should be greater than the distance between the first port 1211 and the end face of the valve core 22 when the valve core 22 is in the open position, i.e. the valve port opening is designed to be rich. The influence of flow resistance on the working performance of the electromagnetic valve 20 can be reduced, and the working stability and reliability of the electromagnetic valve 20 can be improved.

[0068] According to some embodiments of the present application, the electromagnetic valve 20 further comprises a reset portion 24, the reset portion 24 is arranged in the first protruding portion 212 and is used to push the valve core 22 to reset to the position of closing the first port 1211.

[0069] Specifically, when the water pump 1000 is closed, the driving portion 23 is powered off, and the valve core 22 can be closed to the first port 1211 under the elastic force of the reset portion 24 to make the communication pipe section 11 and the bypass pipe section 12 not communicate. By arranging the reset portion 24, the closing effect of the valve core 22 closing the first port 1211 is better, and the working stability and reliability of the electromagnetic valve 20 are higher.

[0070] It should be noted that the driving portion 23 can be configured as a magnetic induction coil, and the magnetic force can be adjusted by adjusting the number of turns of the coil to adapt to different power water pumps 1000.

[0071] As shown in FIG. 1, Figure 6 According to some embodiments of the present application, the end of the cover plate 211 facing the communication pipe section 11 is further provided with a second protruding portion 213, and the outer diameter of the second protruding portion 213 gradually decreases in the direction away from the first protruding portion 212 to define a fitting guide portion.

[0072] Therefore, the second protruding portion 213 extends into the first pipe section 121, so as to realize the assembly of the cover plate 211 on the second pipe section 122, which can reduce the assembly difficulty, improve the assembly precision, and make the fixing stability of the valve body 21 on the first pipe section 121 higher and more reliable.

[0073] It should be noted that the valve body 21 and the second pipe section 122 can be made of the same material, and the two can be connected by ultrasonic welding, laser welding, friction welding, etc.

[0074] In combination with FIGS. 1 and 2, Figure 4 and Figure 6 As shown in FIGS. 1 and 2, according to some embodiments of the present application, the free end of the valve core 22 is sleeved with a sealing member 25, and the inner wall of the first port 1211 is configured as a conical surface or an arc surface to adapt to the sealing member 25.

[0075] Specifically, the sealing member 25 can be configured as a rubber member, and the inner wall of the first port 1211 is formed as a conical surface or an arc surface, so that the sealing member 25 and the inner wall of the first port 1211 have better sealing fit effect, and the sealing effect is improved.

[0076] It should be noted that by configuring the first port 1211 as a conical surface or an arc surface, the requirement of the surface roughness of the sealing member 25 for the sealing effect can be reduced, so as to achieve the purpose of reducing the cost.

[0077] Exemplarily, the electromagnetic valve 20 is arranged in the inlet pipe section 11a, when the medium enters the inside of the volute 100, the driving portion 23 drives the valve core 22 to move away from the first port 1211, and overcomes the elastic force of the reset portion 24, and when the water pump 1000 is closed, the driving portion 23 is powered off, the valve core 22 can be reset to the closed state under the elastic force of the reset portion 24 and the pressure of the medium, so as to close the first port 1211, at this time, the external medium cannot enter the inside of the volute 100 through the first port 1211, and as the pressure of the external medium rises, the pressure on the first port 1211 is higher, and the closing effect is better. Similarly, in the embodiment in which the electromagnetic valve 20 is arranged in the outlet pipe section 11b, when the medium flows out of the volute 100, the driving portion 23 drives the valve core 22 to move away from the first port 1211, and overcomes the elastic force of the reset portion 24, and when the water pump 1000 is closed, the driving portion 23 is powered off, the valve core 22 can be reset to the closed state under the elastic force of the reset portion 24 and the pressure of the medium flowing out of the water pump 1000, so as to close the first port 1211, at this time, the outlet medium cannot flow out through the first port 1211, and as the pressure of the outlet medium rises, the pressure on the first port 1211 is higher, and the closing effect is better.

[0078] As shown in FIGS. 1 and 2, Figure 1 The present application provides a water pump 1000, which comprises a pump body 200 and a volute 100, and the volute 100 is detachably arranged in the pump body 200.

[0079] Specifically, the water pump 1000 of the embodiment of the present application adopts the volute 100 described above, so that the water pump 1000 can integrate the one-way cut-off function, which not only can enrich the use function of the water pump 1000 and improve the use experience, but also can reduce the integration cost of the electromagnetic valve 20.

[0080] It can be understood that the volute 100 of the embodiment of the present application can be interchanged with the volute of the existing water pump, so that the existing water pump has the technical effect of the volute 100 of the embodiment of the present application, and improves the universality of the water pump 1000 of the embodiment of the present application.

[0081] In summary, according to the water pump 1000 of the embodiment of the present application, the electromagnetic valve 20 can be at least partially integrated on the volute 100, that is, the valve core 22 is located in the first pipe section 121, and the cover plate 211 provided with the first pipe section 121 is used to guide the movement of the valve core 22, and is used to install the driving part 23 and the reset part 24, so that the structure of the electromagnetic valve 20 is integrated on the liquid inlet side or the liquid outlet side of the volute 100, the one-way cut-off function of the water pump 1000 is realized, the structure can be simplified, the cost can be reduced, and the existing plug connector can be used without changing the wiring harness layout, and the assembly process is simplified.

[0082] The present application provides a vehicle, comprising the water pump 1000 in the above embodiment.

[0083] Specifically, the vehicle has a thermal management system, and the water pump 1000 is used in the thermal management system to drive the cooling liquid to flow in the cooling liquid flow path, and the cooling liquid flow path can include a plurality of sub-cooling flow paths, each of which is used for cooling one or more devices or assemblies. By the one-way cut-off function of the water pump 1000, interference between sub-cooling flow paths in parallel state can be avoided, such as avoiding the presence of a small amount of water vapor and temperature changes at the passenger compartment air outlet, so as to improve the use experience, improve the safety and reliability of the thermal management system, and improve the ride comfort of the vehicle, and further improve the safety and stability of the vehicle.

[0084] The volute 100, the water pump 1000 and the vehicle of the embodiment of the present application are known to those skilled in the art, and will not be described here.

[0085] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A volute (100), characterized in that, include: The shell body (10) has a connecting pipe section (11) and a bypass pipe section (12) formed on it. The bypass pipe section (12) has a first port (1211) and a second port (1221). The first port (1211) is connected to the connecting pipe section (11). A solenoid valve (20) is disposed in the bypass pipe section (12) and is configured as a normally closed valve to close the first port (1211); wherein The first port (1211) is opened in a first direction, the second port (1221) is opened in a second direction, the first direction and the second direction are at an angle, and the valve core (22) of the solenoid valve (20) moves in the first direction to close or open the first port (1211), and the connecting pipe section (11) is formed as an inlet pipe section (11a) and / or an outlet pipe section (11b).

2. The volute (100) according to claim 1, characterized in that, The bypass pipe section (12) includes: a first pipe section (121) extending along the first direction and a second pipe section (122) extending along the second direction and connected to the first pipe section (121), the first port (1211) being formed in the first pipe section (121), the second port (1221) being formed in the second pipe section (122), and the solenoid valve (20) being disposed in the first pipe section (121).

3. The volute (100) according to claim 2, characterized in that, The solenoid valve (20) includes a valve body (21) and a valve core (22). The valve body (21) is connected to the first pipe section (121). The valve body (21) has an inner cavity (a), and the valve core (22) is movably disposed in the inner cavity (a).

4. The volute (100) according to claim 3, characterized in that, The valve core (22) is fitted with the inner cavity (a) with a clearance.

5. The volute (100) according to claim 3, characterized in that, The valve body (21) includes a cover plate (211) and a first protrusion (212), the first protrusion (212) defining the inner cavity (a). The solenoid valve (20) further includes a drive part (23), the drive part (23) being sleeved on the first protrusion (212).

6. The volute (100) according to claim 5, characterized in that, The solenoid valve (20) further includes a reset part (24), which is disposed in the first protrusion (212) and is used to push the valve core (22) to reset to the position of closing the first port (1211).

7. The volute (100) according to claim 5, characterized in that, The cover plate (211) is provided with a second protrusion (213) at one end facing the connecting pipe section (11). The outer diameter of the second protrusion (213) gradually decreases in the direction away from the first protrusion (212) to define the assembly guide.

8. The volute (100) according to claim 3, characterized in that, The free end of the valve core (22) is fitted with a sealing element (25), and the inner wall of the first port (1211) is constructed as a conical surface or an arc surface to fit the sealing element (25).

9. A water pump (1000), characterized in that, include: Pump body (200); The volute (100) according to any one of claims 1-8, wherein the volute (100) is detachably disposed on the pump body (200).

10. A vehicle, characterized in that, include: The water pump (1000) according to claim 9.

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