Water pump and its method for repairing jamming

Abstract

The present invention discloses a water pump and a method for repairing a stuck water pump. The water pump further comprises: a first ratchet assembly, wherein the first ratchet assembly allows the rotating shaft to rotate unidirectionally only in a first direction; a planetary gear assembly, wherein the planetary gear assembly comprises a first gear, a second gear and a gear ring, wherein the first gear is connected to the rotating shaft in a transmission manner, the second gear is meshed with the first gear, the inner teeth of the gear ring are meshed with the second gear, and the number of teeth of the second gear is greater than the number of teeth of the first gear; and a second ratchet assembly, wherein the second ratchet assembly comprises a first stopper and a second stopper, wherein the first stopper and the second stopper are respectively arranged on the rotor and the gear ring, and the first stopper and the second stopper cooperate to allow the rotor to rotate unidirectionally only in a second direction, wherein the first direction is opposite to the second direction. The rotor, the rotating shaft and the first gear are regarded as a whole, and when the first gear rotates, the second gear is driven to rotate in the opposite direction, and a torque is applied to the rotor. The water pump can perform self-repair using its own structure, thus saving time and effort.

Description

Technical Field

[0001] The present invention relates to the field of pump valves, and particularly to a water pump and a method for repairing its jamming. Background Art

[0002] Compared with AC water pumps, DC brushless water pumps are smaller in volume, longer in service life, and lower in noise. They are equipped with intelligent chips that can adjust the rotation speed and signal feedback, and have become a standard configuration for zero - cold - water gas water heaters. Due to water quality differences in different regions and different pipeline conditions of each user's home, although there is a filtering device at the water inlet of the gas water heater, some fine sand or other impurities still enter the pump body and adhere to the gap between the water pump shaft and the rotor. If the water pump does not run for a long time, these impurities may become sticky when soaked in water for a long time, bonding the shaft and the rotor. When the water pump starts, if the torque cannot break free from the bonding force, it will cause the water pump to jam and cannot start. At this time, maintenance and repair are required.

[0003] The common practice in the prior art is to disassemble the water pump and rotate the rotor to break the bonding force. This is rather troublesome, time - consuming and laborious. Moreover, due to the high sealing requirements of the water pump, improper disassembly and assembly may cause the risk of later leakage. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect of inconvenient maintenance when the water pump jams in the prior art, and to provide a water pump and a method for repairing its jamming.

[0005] The present invention solves the above - mentioned technical problem through the following technical solutions: A water pump includes a rotor and a rotating shaft, and the water pump further includes:

[0006] A first ratchet assembly that allows the rotating shaft to rotate unidirectionally only in a first direction;

[0007] A planetary gear assembly including a first gear, a second gear, and a gear ring. The first gear is in transmission connection with the rotating shaft, the second gear meshes with the first gear, the internal teeth of the gear ring mesh with the second gear, and the number of teeth of the second gear is greater than that of the first gear;

[0008] A second ratchet assembly including a first limiting member and a second limiting member. The first limiting member and the second limiting member are respectively arranged on the rotor and the gear ring, and the cooperation of the first limiting member and the second limiting member allows the rotor to rotate unidirectionally only in a second direction, and the first direction is opposite to the second direction.

[0009] In this solution, when the water pump is operating normally, the rotating shaft is restricted by the first ratchet assembly and thus does not rotate, and the rotor rotates normally in the forward direction; when the rotating shaft and the rotor of the water pump are stuck, the stator is controlled to make the rotor rotate in the reverse direction. At this time, the rotating shaft and the rotor are bonded together. At the same time, due to the one-way rotation characteristic of the first ratchet assembly, the rotating shaft rotates in the reverse direction along the first direction together with the rotor. Regarding the rotor, the rotating shaft, and the first gear as a whole, when it rotates, it will drive the second gear to rotate and change the rotation direction, causing the toothed ring to rotate in the direction opposite to that of the first gear, that is, the second direction. Since the transmission ratio between the second gear and the driven gear is greater than 1, the rotation torque of the toothed ring is increased. When the first limiting member and the second limiting member cooperate, a greater torque is applied to the rotor. Due to the one-way rotation characteristic of the second ratchet assembly, when the toothed ring rotates to the corresponding position, the second limiting member touches the first limiting member, applying the torque to the rotor and restricting the rotation of the rotor. The instantaneous force generated breaks the bonding force between the rotor and the rotating shaft, and the water pump can perform self-repair using its own structure, saving time and effort.

[0010] Preferably, there are at least two of the first limiting members and at least two of the second limiting members. The at least two first limiting members are evenly distributed along the circumference of the rotor, and the at least two second limiting members are evenly distributed along the circumference of the toothed ring.

[0011] In this solution, this structural setting improves the one-way limiting effect of the first limiting member and the second limiting member on the rotor, thereby effectively breaking the bonding force between the rotating shaft and the rotor, with high reliability.

[0012] Preferably, the first limiting member is a first ratchet tooth, and the second limiting member is a ratchet pawl;

[0013] Or the first limiting member is a ratchet pawl, and the second limiting member is a first ratchet tooth.

[0014] In this solution, when the rotor rotates normally in the second direction, the force-bearing surface of the ratchet pawl is the back of the ratchet, and the ratchet pawl and the first ratchet tooth do not interfere; when a jam occurs, the rotor rotates in the first direction, the force-bearing surface of the ratchet pawl is the belly of the ratchet, the ratchet pawl is in the open state, and the ratchet pawl and the first ratchet tooth interfere to perform one-way limiting on the rotor in the first direction. The form of cooperation between the ratchet pawl and the first ratchet tooth has high limiting accuracy, can transmit a large load, and the first ratchet tooth and the ratchet pawl are easy to install, with a simple structure.

[0015] Preferably, there are at least two second gears, and the at least two second gears are evenly distributed along the circumference of the first gear.

[0016] In this solution, this structural setting improves the uniformity of the force on the toothed ring, enables the force for breaking the bonding force to be better transmitted to the rotating shaft and the rotor, and further improves the reliability.

[0017] Preferably, the water pump includes a housing and a telescopic part fixed to the housing. The telescopic part can telescopically move along the axial direction of the rotating shaft. The first ratchet assembly includes a second ratchet tooth and a third ratchet tooth that cooperate with each other. The second ratchet tooth and the third ratchet tooth are respectively formed on the end face of the telescopic part and the end face of the rotating shaft.

[0018] In this solution, when the water pump is in a normal operating state, the second ratchet tooth and the third ratchet tooth are engaged to limit the rotation of the rotating shaft, keeping the rotating shaft in a non-rotating state. When in a stuck state, the rotor rotates in the reverse direction, and the third ratchet tooth can push up the second ratchet tooth to move the telescopic part axially, causing the rotating shaft to rotate with the rotor, thereby realizing one-way limiting of the rotating shaft. By arranging the telescopic part along the axial direction of the rotating shaft, the space of the water pump is fully utilized, and the compactness is good.

[0019] Preferably, both the second ratchet tooth and the third ratchet tooth are at least two.

[0020] In this solution, multiple ratchet teeth act together to reduce the slippage and failure of the second ratchet tooth and the third ratchet tooth, prevent the rotating shaft from rotating together with the rotor during the forward rotation of the rotor, and improve the reliability of the first ratchet assembly.

[0021] Preferably, the telescopic part includes a spring and a telescopic body arranged along the axial direction of the rotating shaft. The spring is fixed to the housing, and the telescopic body is elastically connected to the spring. The second ratchet tooth is formed on the telescopic body.

[0022] In this solution, the elastic force of the spring is used to push the telescopic body to expand and contract. When the rotor rotates forward, the spring pushes the telescopic body to engage the second ratchet tooth and the third ratchet tooth. When rotating in the reverse direction, the telescopic body moves axially against the elastic force of the spring. The elastic force of the spring is stable and the reliability is high.

[0023] Preferably, the telescopic body has a fixed shaft at the end far from the second ratchet tooth, and the fixed shaft is sleeved in the spring.

[0024] In this solution, with this structural arrangement, the spring restricts the degree of freedom of the fixed shaft in the radial direction, keeping the telescopic body moving along the axial direction, reducing the risk of slippage between the second ratchet tooth and the second ratchet tooth, and further improving the reliability.

[0025] Preferably, the first ratchet assembly and the second ratchet assembly are respectively located at both ends of the rotating shaft.

[0026] In this solution, with this structural arrangement, interference between the first ratchet assembly and the second ratchet assembly is avoided, the space at both ends of the rotating shaft can be fully utilized, and the structure is more compact.

[0027] Preferably, the water pump includes a monitoring component which can monitor whether the rotating shaft and the rotor are in a stuck state, and can control the stator according to the operating states of the rotating shaft and the rotor to make the rotor rotate forward or backward.

[0028] In this solution, with this structural arrangement, the monitoring component can automatically monitor the operating state of the water pump and control the stator to make the rotor rotate forward or backward. When the rotating shaft and the rotor are stuck, it can automatically intervene to release the stuck state, with a high degree of automation and an improved intelligent level of the water pump.

[0029] The present invention also discloses a method for repairing the stuck state of the above water pump, which includes step S1: when the monitoring component monitors that the rotating shaft and the rotor are in a stuck state, the monitoring component controls the stator to make the rotor rotate backward.

[0030] In this solution, when the rotating shaft and the rotor are stuck, the monitoring component automatically intervenes to release the stuck state, with a high degree of automation and an improved intelligent level of the water pump.

[0031] Preferably, after step S1, the following steps are included:

[0032] S2: The monitoring component monitors the time when the rotor rotates backward. When the preset time is reached and the monitoring component monitors that the rotating shaft and the rotor are still in a stuck state, it controls the stator to stop the rotation of the rotor;

[0033] S3: Repeat steps S1 and S2.

[0034] In this solution, by setting the preset time, it is avoided that when the torque on the rotor and the rotating shaft is less than the bonding torque, the stuck state of the water pump cannot be released, preventing overheating damage caused by continuous reverse rotation of the rotor; by stopping the reverse rotation of the rotor and restarting, with the instantaneous torque effect, the bonding force between the rotating shaft and the rotor can be better broken, thereby improving the repair effect of the stuck state of the water pump.

[0035] Preferably, after step S3, step S4 is further included: when steps S1 and S2 are run to reach the preset number of times and the monitoring component monitors that the rotating shaft and the rotor are still in a stuck state, stop running step S3.

[0036] In this solution, by setting the number of stuck state repair cycles of the water pump, it is avoided that the internal structure of the water pump is damaged due to continuous repair, improving the intelligent level of the water pump.

[0037] The positive and progressive effect of the present invention is that when the water pump is operating normally, the rotating shaft is restricted by the first ratchet assembly and does not rotate, and the rotor rotates normally in the forward direction; after the rotating shaft and the rotor of the water pump are stuck, the stator is controlled to make the rotor rotate in the reverse direction. At this time, the rotating shaft and the rotor are bonded together. At the same time, due to the unidirectional rotation characteristic of the first ratchet assembly, the rotating shaft rotates in the reverse direction along the first direction together with the rotor. The rotor, the rotating shaft and the first gear are regarded as a whole. When they rotate, they will drive the second gear to rotate and change the direction, so that the ring gear rotates in the opposite direction to the first gear, that is, the second direction. Due to the unidirectional rotation of the second ratchet assembly The rotation characteristic is that when the ring gear rotates to the corresponding position, the second limit member touches the first limit member and applies torque to the rotor to limit the rotation of the rotor. The instantaneous force generated is used to break the adhesion between the rotor and the shaft. The water pump can use its own structure to self-repair, saving time and effort. The monitoring component can automatically monitor the operating status of the water pump and control the stator to make the rotor rotate forward or reverse. When the shaft and rotor are stuck, it can automatically intervene to release the stuck state. By setting the preset time and preset number of times, the internal structure of the water pump can be avoided from damage. The high degree of automation improves the intelligence level of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the internal structure of a water pump according to a preferred embodiment of the present invention.

[0039] Figure 2 Schematic diagram of the structure of a planetary gear assembly according to a preferred embodiment of the present invention.

[0040] Figure 3 Schematic diagram of the structure of the gear ring according to a preferred embodiment of the present invention.

[0041] Figure 4 Schematic diagram of the structure of a pawl according to a preferred embodiment of the present invention.

[0042] Figure 5 Schematic diagram of the structure of the rotor of a preferred embodiment of the present invention.

[0043] Figure 6 It is a schematic structural diagram of the telescopic portion and the first ratchet assembly of a preferred embodiment of the present invention.

[0044] Figure 7 Schematic diagram of the structure of the rotating shaft of a preferred embodiment of the present invention.

[0045] Figure 8 It is a schematic structural diagram of the cooperation between the rotating shaft and the telescopic part in a preferred embodiment of the present invention.

[0046] Figure 9 Schematic diagram of the external structure of a water pump according to a preferred embodiment of the present invention.

[0047] Description of Reference Numerals

[0048] Rotator 1

[0049] Rotating shaft 2

[0050] Planetary gear assembly 3

[0051] First gear 31

[0052] Second gear 32

[0053] Toothed ring 33

[0054] First ratchet assembly 4

[0055] Second ratchet tooth 41

[0056] Third ratchet tooth 42

[0057] Second ratchet assembly 5

[0058] First ratchet tooth 51

[0059] Ratchet pawl 52

[0060] Telescopic part 6

[0061] Spring 61

[0062] Telescopic body 62

[0063] Fixed shaft 621

[0064] Housing 7

[0065] First direction A

[0066] Second direction B Detailed implementation mode

[0067] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the described embodiments for this reason.

[0068] As Figures 1-9 shown, the present invention discloses a water pump, which includes a rotator 1 and a rotating shaft 2. Among them, the water pump further includes: a first ratchet assembly 4, and the first ratchet assembly 4 allows the rotating shaft 2 to rotate only in one direction along the first direction A; a planetary gear assembly 3, and the planetary gear assembly 3 includes a first gear 31, a second gear 32 and a toothed ring 33. The first gear 31 is in transmission connection with the rotating shaft 2, the second gear 32 is meshed with the first gear 31, the internal teeth of the toothed ring 33 are meshed with the second gear 32, and the number of teeth of the second gear 32 is greater than that of the first gear 31; a second ratchet assembly 5, and the second ratchet assembly 5 includes a first limiting member and a second limiting member. The first limiting member and the second limiting member are respectively arranged on the rotator 1 and the toothed ring 33, and the cooperation of the first limiting member and the second limiting member allows the rotator 1 to rotate only in one direction along the second direction B, and the first direction A is opposite to the second direction B.

[0069] In this solution, when the water pump is running normally, the rotating shaft 2 is restricted by the first ratchet assembly 4 and thus does not rotate. The rotor 1 rotates normally in the positive direction, that is, the second direction B. After the rotating shaft 2 and the rotor 1 of the water pump are stuck, the stator is controlled to make the rotor 1 rotate in the reverse direction, that is, the first direction A. At this time, the rotating shaft 2 and the rotor 1 are bonded together. At the same time, due to the one-way rotation characteristic of the first ratchet assembly 4, the rotating shaft 2 rotates reversely along the first direction A together with the rotor 1. Regarding the rotor 1, the rotating shaft 2 and the first gear 31 as a whole, when it rotates, it will drive the second gear 32 to rotate and change the rotation direction, so that the toothed ring 33 rotates in the direction opposite to that of the first gear 31, that is, the second direction B. Due to the one-way rotation characteristic of the second ratchet assembly 5, when the toothed ring 33 rotates to the corresponding position, the second limiting member touches the first limiting member, applying a torque to the rotor 1 to restrict the rotation of the rotor 1. The rotor 1 and the rotating shaft 2 are respectively subjected to opposite acting forces, and the instantaneous acting force generated breaks the bonding force between the rotor 1 and the rotating shaft 2. The water pump can perform self-repair by using its own structure, saving time and effort.

[0070] Since the number of teeth of the second gear 32 is greater than that of the first gear 31, the transmission ratio of the second gear 32 to the first gear 31 is greater than 1, thereby increasing the rotation torque of the toothed ring 33. When the ratchet belly of the first ratchet tooth 51 and the pawl 52 cooperate, a greater torque is applied to the rotor 1. The direction of this torque is opposite to the rotation direction of the rotor 1 and the rotating shaft 2. When this torque is greater than the bonding torque between the rotating shaft 2 and the rotor 1, it forces the rotating shaft 2 and the rotor 1 to separate, so that a greater bonding force can be broken, and the stuck state of the water pump can be better released.

[0071] Among them, the rotor 1 only rotates unidirectionally in the second direction B, that is, when the rotor 1 rotates in the opposite first direction A to the corresponding position, it will be limited by the first limiting member and the second limiting member, which does not mean that the rotor 1 can never rotate in the first direction A.

[0072] As Figures 2-5 shown, the first limiting member is the pawl 52, and the second limiting member is the first ratchet tooth 51. Of course, in other alternative embodiments, the first limiting member can also be set as the first ratchet tooth 51, and the second limiting member can be set in the form of the pawl 52. When the rotor 1 rotates normally in the second direction B, the force-bearing surface of the pawl 52 is the ratchet back, and the pawl 52 does not interfere with the first ratchet tooth 51. When a stuck occurs, the rotor 1 rotates in the first direction A, the force-bearing surface of the pawl 52 is the ratchet belly, the pawl 52 is in the open state, and the pawl 52 interferes with the first ratchet tooth 51 to perform one-way limiting on the rotor 1 in the first direction A. Adopting the form of cooperation between the pawl 52 and the first ratchet tooth 51, the limiting accuracy is high, the load that can be transmitted is large, and the first ratchet tooth 51 and the pawl 52 are convenient to install and the structure is simple.

[0073] Specifically, as Figure 3As shown, the first ratchet tooth 51 is in the shape of a cylindrical stopper block and is perpendicular to the toothed ring 33. In other embodiments, in order to better unidirectionally limit the second ratchet assembly 5, the first ratchet tooth 51 can also be inclined at a certain angle.

[0074] Specifically, as Figures 2-5 shown, both the first limiting member and the second limiting member are three in number, and the first limiting members are evenly distributed along the circumferential direction of the rotor 1, and the second limiting members are evenly distributed along the circumferential direction of the toothed ring 33. This structural arrangement improves the unidirectional limiting effect of the first limiting member and the second limiting member on the rotor 1, thereby effectively breaking the adhesive force between the rotating shaft 2 and the rotor 1, and has high reliability. Of course, in other alternative embodiments, one first limiting member and one second limiting member can be provided respectively. Preferably, in order to improve reliability, the first limiting member and the second limiting member can be provided in other numbers of two or more, and at least two first limiting members are evenly distributed along the circumferential direction of the rotor 1, and at least two second limiting members are evenly distributed along the circumferential direction of the toothed ring 33.

[0075] As Figure 2 shown, there are three second gears 32. Among them, the second gears 32 are evenly distributed along the circumferential direction of the first gear 31. This structural arrangement improves the evenness of the force on the toothed ring 33, enables the force for breaking the adhesive force to be better transmitted to the rotating shaft 2 and the rotor 1, and further improves reliability. Of course, in other alternative embodiments, only one second gear 32 can also be provided. Preferably, the second gears 32 are in other numbers of two or more, and at least two second gears 32 are evenly distributed along the circumferential direction of the first gear 31.

[0076] As Figure 6 shown, the water pump includes a housing 7 and a telescopic part 6 fixed on the housing 7. The telescopic part 6 can telescopically move along the axial direction of the rotating shaft 2. The first ratchet assembly 4 includes a second ratchet tooth 41 and a third ratchet tooth 42 that cooperate with each other. The second ratchet tooth 41 and the third ratchet tooth 42 are respectively provided on the end surface of the telescopic part 6 and the end surface of the rotating shaft 2. In the normal operation state of the water pump, the second ratchet tooth 41 and the third ratchet tooth 42 are engaged to limit the rotating shaft 2, and the rotor 1 rotates in the positive direction while the rotating shaft 2 remains stationary; when in a stuck state, the rotor 1 rotates in the reverse direction, and the third ratchet tooth 42 can push up the second ratchet tooth 41 to move the telescopic part 6 axially, so that the rotating shaft 2 rotates together with the rotor 1, thereby realizing the unidirectional limit of the rotating shaft 2. By arranging the telescopic part 6 along the axial direction of the rotating shaft 2, the space of the water pump is fully utilized, and it has good compactness. Of course, in other alternative embodiments, ratchet teeth can also be provided on the outer peripheral edge of the radial direction of the rotating shaft 2, and a pawl 52 can be provided on its circumferential side to achieve unidirectional rotation.

[0077] Specifically, both the second ratchet teeth 41 and the third ratchet teeth 42 are multiple. The multiple ratchet teeth act together to reduce the occurrence of slipping and failure of the second ratchet teeth 41 and the third ratchet teeth 42, prevent the rotating shaft 2 from rotating together with the rotor 1 during forward rotation, and improve the reliability of the first ratchet assembly 4. Of course, in other alternative embodiments, only one of the second ratchet teeth 41 and the third ratchet teeth 42 may be provided. Preferably, both the second ratchet teeth 41 and the third ratchet teeth 42 are at least two.

[0078] As Figure 6 shown, the telescopic part 6 includes a spring 61 and a telescopic body 62 arranged along the axial direction of the rotating shaft 2. The spring 61 is fixed on the housing 7, the telescopic body 62 is elastically connected to the spring 61, and the second ratchet teeth 41 are formed on the telescopic body 62. The elastic force of the spring 61 is used to push the telescopic body 62 to expand and contract. When the rotor 1 rotates forward, the spring 61 pushes the telescopic body 62 to engage the second ratchet teeth 41 and the third ratchet teeth 42. When rotating in the reverse direction, the telescopic body 62 moves axially against the elastic force of the spring 61. The elastic force of the spring 61 is stable and the reliability is high. Of course, in other alternative embodiments, the telescopic part 6 may also adopt other materials with a resilient property.

[0079] As Figure 6 shown, the telescopic body 62 has a fixed shaft 621 at one end away from the second ratchet teeth 41. The fixed shaft 621 is sleeved inside the spring 61. With this structural arrangement, the spring 61 restricts the degree of freedom of the fixed shaft 621 in the radial direction, enables the telescopic body 62 to move along the axial direction, reduces the risk of slipping between the second ratchet teeth 41 and the second ratchet teeth 41, and further improves the reliability. Of course, in other alternative embodiments, the fixed shaft 621 may not be provided, that is, the spring 61 directly abuts against one end of the telescopic body 62 away from the second ratchet teeth 41.

[0080] In this embodiment, the planetary gear assembly 3 functions to increase the torque and change the direction of rotation. That is, regarding the rotor 1, the rotating shaft 2, and the first gear 31 as a whole, when it rotates, it drives the second gear 32 to rotate. At this time, the ring gear 33 reduces the speed and increases the torque. The slow rotation of the ring gear 33 causes the first ratchet teeth 51 to apply the torque to the rotor 1 when hitting the pawl 52, and the adhesive force between the rotor 1 and the rotating shaft 2 is broken at this moment.

[0081] Specifically, the first ratchet assembly 4 and the second ratchet assembly 5 are respectively located at both ends of the rotating shaft 2. This avoids interference between the first ratchet assembly 4 and the second ratchet assembly 5, can make full use of the space at both ends of the rotating shaft 2, and makes the structure more compact. Of course, in other alternative embodiments, the first ratchet assembly 4 and the second ratchet assembly 5 may also be arranged at the same end of the rotating shaft 2.

[0082] Specifically, the water pump includes a monitoring component (not shown in the figure), which can monitor whether the rotating shaft 2 and the rotor 1 are in a stuck state, and can control the stator according to the operating state of the rotating shaft 2 and the rotor 1 to make the rotor 1 rotate in the forward direction or in the reverse direction. The monitoring component automatically monitors the operating state of the water pump and controls the stator to make the rotor 1 rotate in the forward direction or in the reverse direction. When the rotating shaft 2 and the rotor 1 are stuck, it can automatically intervene to release the stuck state, with a high degree of automation, thereby improving the intelligence level of the water pump.

[0083] This embodiment also discloses a method for repairing a stuck water pump, which includes step S1: when the monitoring component detects that the shaft 2 and the rotor 1 are stuck, the monitoring component controls the stator to rotate the rotor 1 in the reverse direction. When the shaft 2 and the rotor 1 are stuck, the monitoring component automatically intervenes to release the stuck state, with a high degree of automation, thereby improving the intelligence level of the water pump.

[0084] Specifically, the step S1 includes the following steps:

[0085] S2: The monitoring component monitors the time for the rotor 1 to rotate in the reverse direction. When the preset time is reached and the monitoring component detects that the shaft 2 and the rotor 1 are still in a stuck state, the stator is controlled to stop the rotor 1 from rotating.

[0086] S3: Repeat steps S1 and S2.

[0087] In this embodiment, the preset time for the operation of the jam repair logic is 5 seconds. After the monitoring component detects that the jam state of the shaft 2 and the rotor 1 is released, the stator is controlled to start the rotor 1 to rotate forward. By setting the preset time, it is avoided that the jam state of the water pump cannot be released when the torque applied to the rotor 1 and the shaft 2 is less than the bonding torque, thereby preventing overheating damage caused by continuous reverse rotation of the rotor 1. By stopping the reverse rotation of the rotor 1 and restarting the operation, the instantaneous torque effect is utilized to better break the bonding force between the shaft 2 and the rotor 1, thereby improving the jam repair effect of the water pump.

[0088] Specifically, step S3 further includes step S4: when step S1 and step S2 are executed for a preset number of times, and the monitoring component detects that the shaft 2 and the rotor 1 are still in a stuck state, step S3 is stopped.

[0089] In this embodiment, the preset number of stuck repair cycles is 3 times. When step S1 and step S2 are executed three times and the stuck state is still not repaired, a fault is displayed and manual intervention is performed to repair the stuck state. By setting the number of stuck repair cycles of the water pump, damage to the internal structure of the water pump due to continuous repair is avoided, thereby improving the intelligence level of the water pump.

[0090] The monitoring component determines whether the water pump is in a stuck state by monitoring the current of the motor. That is, when the rotor 1 is stuck, the current of the motor will increase significantly. Among them, the motor is composed of a stator, a rotor 1, and a coil (not shown in the figure), etc. The monitoring and control principles of the monitoring component for monitoring the current of the motor, the running time of the rotor 1, and controlling the motor all belong to the prior art. Therefore, the specific structure and implementation principle of the monitoring component will not be elaborated in this embodiment.

[0091] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A water pump, which comprises a rotor and a rotating shaft, is characterized in that, The water pump further includes: A first ratchet assembly that allows the rotating shaft to rotate unidirectionally only in a first direction; A planetary gear assembly including a first gear, a second gear, and a gear ring. The first gear is in transmission connection with the rotating shaft, the second gear meshes with the first gear, the internal teeth of the gear ring mesh with the second gear, and the number of teeth of the second gear is greater than that of the first gear; A second ratchet assembly including a first limiting member and a second limiting member. The first limiting member and the second limiting member are respectively arranged on the rotor and the gear ring. The cooperation of the first limiting member and the second limiting member allows the rotor to rotate unidirectionally only in a second direction, and the first direction is opposite to the second direction.

2. The water pump according to claim 1, characterized in that, Both the first limiting member and the second limiting member are at least two. At least two of the first limiting members are evenly distributed along the circumferential direction of the rotor, and at least two of the second limiting members are evenly distributed along the circumferential direction of the gear ring.

3. The water pump according to claim 1, wherein The first limiting member is a first ratchet tooth, and the second limiting member is a pawl; Or the first limiting member is a pawl, and the second limiting member is a first ratchet tooth.

4. The water pump according to claim 1, characterized in that, There are at least two of the second gears, and at least two of the second gears are evenly distributed along the circumferential direction of the first gear.

5. The water pump according to claim 1, characterized in that, The water pump includes a housing and a telescopic part fixed on the housing. The telescopic part can telescopically move along the axial direction of the rotating shaft. The first ratchet assembly includes a second ratchet tooth and a third ratchet tooth that cooperate with each other. The second ratchet tooth and the third ratchet tooth are respectively provided on the end face of the telescopic part and the end face of the rotating shaft.

6. The water pump according to claim 5, characterized in that, Both the second ratchet tooth and the third ratchet tooth are at least two.

7. The water pump according to claim 5, wherein The telescopic part includes a spring and a telescopic body arranged along the axial direction of the rotating shaft. The spring is fixed on the housing, the telescopic body is elastically connected with the spring, and the second ratchet tooth is provided on the telescopic body.

8. The water pump according to claim 7, characterized in that, The telescopic body has a fixed shaft at one end away from the second ratchet tooth, and the fixed shaft is sleeved in the spring.

9. The water pump according to claim 1, characterized in that, The first ratchet assembly and the second ratchet assembly are respectively located at both ends of the rotating shaft.

10. The water pump according to claim 1, characterized in that, The water pump includes a monitoring assembly that can monitor whether the rotating shaft and the rotor are in a stuck state, and can control the stator according to the operating states of the rotating shaft and the rotor to make the rotor rotate forward or backward.

11. A method for repairing the jamming of a water pump, characterized in that, Using the water pump according to any one of claims 1-9, the stuck repair method includes step S1: when the monitoring assembly of the water pump monitors that the rotating shaft and the rotor are in a stuck state, the monitoring assembly controls the stator to make the rotor rotate backward.

12. The jamming repair method according to claim 11, wherein After step S1, the steps include: S2: The monitoring assembly monitors the time when the rotor rotates backward. When the preset time is reached and the monitoring assembly monitors that the rotating shaft and the rotor are still in a stuck state, it controls the stator to stop the rotor from rotating; S3: Repeat steps S1 and S2.

13. The stuck repair method according to claim 12, wherein After step S3, there is also step S4: when the monitoring component monitors that the rotating shaft and the rotor are still in a stuck state after steps S1 and S2 have run for a preset number of times, step S3 is stopped.

Images