Valve and pump integrated structure

Abstract

The invention discloses a valve and pump integrated structure which comprises a valve and pump integrated mechanism. When the water pump rotates anticlockwise during rotation, the ratchet wheel drives the sun wheel to rotate anticlockwise, the planetary gear set drives the valve element to rotate, and switching of a water valve and a water pump waterway is achieved. When the water pump rotating shaft rotates clockwise, the problem that according to an existing ratchet wheel separation structure, a pressure difference is generated between the upper portion and the lower portion of an impeller through forward rotation of the water pump; according to the structure, when the water pump rotates at a low speed or is started, due to the fact that no pressure difference exists between the upper portion and the lower portion of the impeller, the ratchet wheel cannot be separated immediately, the ratchet wheel and the rotating shaft rotate synchronously, the phenomenon of tooth hitting with the gear below can be generated, and noise is generated; and the service life of the gear is also influenced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile thermal management, and in particular to a valve-pump integrated structure. Background Art

[0002] In the current automotive thermal management module, water pumps and water valves are necessary components, and the electronic water valve requires a special driver to drive it, and the cost of the driver is relatively high. In the current valve-pump integrated module, the switching between the water pump mode and the water valve mode needs to be achieved by the clutch of the ratchet mechanism, and the current ratchet separation structure needs to generate a pressure difference between the upper and lower parts of the impeller through the positive rotation of the water pump, so that the impeller drives the shaft to move toward the inlet, and synchronously drives the ratchet connected to the shaft to move and separate from the matching gear. When the water pump is at a low speed or when it is started, there is no pressure difference between the upper and lower parts of the impeller, and the ratchet cannot be separated immediately. The synchronous rotation of the ratchet and the shaft will cause the phenomenon of tooth collision with the gear below, which will generate noise and also affect the life of the gear. Summary of the invention

[0003] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present invention is to provide a valve-pump integrated structure, which has the advantages of valve-pump integration and solves the problem that the current ratchet separation structure needs to generate a pressure difference between the upper and lower parts of the impeller through the positive rotation of the water pump, so that the impeller drives the rotating shaft to move toward the inlet, and synchronously drives the ratchet connected to the rotating shaft to move and separate from the matching gear. When the water pump is at a low speed or when it is started, there is no pressure difference between the upper and lower parts of the impeller, and the ratchet cannot be separated immediately. The synchronous rotation of the ratchet and the rotating shaft will cause the phenomenon of teeth hitting with the gear below, generate noise, and also affect the life of the gear.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a valve-pump integrated structure, including a valve-pump integrated mechanism, the valve-pump integrated mechanism including a water valve housing, a water valve core, a water valve sealing gasket, a ratchet, a sun gear, a planetary gear, a spring pressure assembly, fixing bolts, a pump head, an impeller and a pump body, the water valve housing and the pump body are respectively connected and fixed to the pump head by bolts, and are sealed by O-rings to prevent leakage, the built-in valve core is meshed with a gear set, a sun gear and a planetary gear, and the ratchet is meshed with the sun gear; the ratchet and the impeller are interference fit with the water pump shaft, the spring pressure assembly applies pressure to the sealing gasket, and the bottom of the valve-pump integrated mechanism is provided with a water pump internal rotor, a stator and a pre-stressed elastomer, the stator is located on the outside of the water pump internal rotor, and the pre-stressed elastomer is located on the top of the water pump internal rotor.

[0005] Compared with the prior art, the present invention has the following beneficial effects:

[0006] 1. The present invention realizes the switching of the water valve and the water circuit of the water pump by arranging that when the water pump rotates counterclockwise, the ratchet drives the sun gear to rotate counterclockwise, and drives the valve core to rotate through the planetary gear set, and realizes the switching of the water valve and the water circuit of the water pump; when the water pump shaft rotates clockwise, the impeller drives the water flow to rotate, and a pressure difference is generated between the upper and lower parts of the impeller (the pressure below is less than the pressure above), so that the impeller moves upward, and the ratchet is also driven upward by the rotating shaft to separate the ratchet from the sun gear), at this time, the planetary gear set remains stationary, and the whole module works as a water pump. At the same time, other pipelines of the water valve can be used as flow channels in the water circuit system, the rotor, stator and pre-loaded elastic body inside the water pump, the elastic body presses the rotor downward, so that the center position of the rotor and the stator is offset, forming a state of magnetic imbalance, and after the water pump is powered on, the stator The magnetic field of the rotor is enhanced, and the magnetic force between the rotor and the rotor increases, overcoming the downward elastic force of the elastic body, causing the rotor to move up instantly and reach a state of magnetic balance consistent with the center of the stator. The ratchet moves up synchronously with the rotor through the connected shaft and separates from the sun gear instantly, realizing the state of ratchet separation before the water pump rotates. This solves the problem that the current ratchet separation structure needs to generate a pressure difference between the upper and lower parts of the impeller through the positive rotation of the water pump, so that the impeller drives the shaft to move toward the inlet, and synchronously drives the ratchet connected to the shaft to move and separate from the matching gear. When the water pump is at a low speed or when it is started, there is no pressure difference between the upper and lower parts of the impeller, so the ratchet cannot be separated immediately. The synchronous rotation of the ratchet and the shaft will cause the phenomenon of teeth hitting with the gear below, generating noise, and also affecting the life of the gear, thus achieving the effect of valve-pump integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the explosion structure of the present invention;

[0008] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0009] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0010] In the figure: A. valve-pump integrated mechanism; 1. water valve housing; 2. water valve core; 3. water valve sealing gasket; 4. ratchet; 5. sun gear; 6. planetary gear; 7. spring pressure assembly; 8. fixing bolt; 9. pump head; 10. impeller; 11. pump body; 12. rotor inside the water pump; 13. stator; 14. pre-load elastomer. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] like Figures 1 to 3 As shown, the valve-pump integrated structure provided by the present invention includes a valve-pump integrated mechanism A, which includes a water valve housing 1, a water valve core 2, a water valve sealing gasket 3, a ratchet 4, a sun gear 5, a planetary gear 6, a spring pressure assembly 7, a fixing bolt 8, a pump head 9, an impeller 10 and a pump body 11. The water valve housing 1 and the pump body 11 are respectively connected and fixed to the pump head 9 by bolts, and are sealed by O-rings to prevent leakage. The built-in valve core is meshed with the gear set, the sun gear 5 and the planetary gear 6, and the ratchet 4 is meshed with the sun gear 5; the ratchet 4 and the impeller 10 are interference fit with the water pump shaft, and the spring pressure assembly 7 applies pressure to the sealing gasket. The bottom of the valve-pump integrated mechanism A is provided with a water pump internal rotor 12, a stator 13 and a pre-stressed elastomer 14, the stator 13 is located on the outside of the water pump internal rotor 12, and the pre-stressed elastomer 14 is located on the top of the water pump internal rotor 12.

[0013] The working principle and use process of the present invention are as follows: when the water pump rotates counterclockwise, the ratchet 4 drives the sun gear 5 to rotate counterclockwise, and drives the valve core to rotate through the planetary gear set to realize the switching of the water valve and the water pump waterway. When the water pump shaft rotates clockwise, the impeller 10 drives the water flow to rotate, and a pressure difference is generated between the upper and lower parts of the impeller 10. The pressure below the impeller 10 is less than the pressure above, so that the impeller 10 moves upward, and the ratchet 4 is also driven upward by the shaft to separate the ratchet 4 from the sun gear 5. At this time, the planetary gear set remains stationary, and the entire module works as a water pump. At the same time, other pipelines of the water valve can be used as flow passages in the waterway system. The rotor 12, stator 13 and pre-pressure inside the water pump The elastomer 14 presses the rotor downward, causing the center position of the rotor and the stator 13 to shift, forming a state of magnetic imbalance. After the water pump is powered on, the magnetic field of the stator 13 is enhanced, and the magnetic force between the stator 13 and the rotor is increased, overcoming the downward elastic force of the elastomer, causing the rotor to move up instantly and reach a state of magnetic balance consistent with the center of the stator 13. The ratchet 4 moves up synchronously with the rotor through the connected shaft and separates instantly from the sun gear 5, achieving a state where the ratchet 4 is separated before the water pump rotates. When the water pump is powered off, the magnetic force returns to the state before power is supplied, and the elastic rebound force presses the rotor downward, causing it to return to its initial position. The ratchet 4 also moves synchronously and meshes with the sun gear 5. At this time, the water valve mode can be switched.

[0014] To sum up: the valve-pump integrated structure is arranged that when the water pump rotates counterclockwise, the ratchet 4 drives the sun gear 55 to rotate counterclockwise, and drives the valve core to rotate through the planetary gear set to realize the switching of the water valve and the water pump water circuit. When the water pump shaft rotates clockwise, the impeller 10 drives the water flow to rotate, and a pressure difference is generated between the impeller 10 and the lower part. The pressure below the impeller 10 is less than the pressure above, so that the impeller 10 moves upward, and drives the ratchet 4 to move upward through the rotating shaft, so that the ratchet 4 is separated from the sun gear 5. At this time, the planetary gear set remains stationary, and the entire module works as a water pump. At the same time, other pipelines of the water valve can be used as flow channels in the water circuit system. The rotor 12, stator 13 and pre-loaded elastic body 14 inside the water pump, the elastic body presses the rotor downward, so that the center position of the rotor and the stator 13 is offset, forming a magnetic In the state of force imbalance, after the water pump is energized, the magnetic field of the stator 13 is enhanced, and the magnetic force between the stator 13 and the rotor increases, overcoming the downward elastic force of the elastic body, causing the rotor to move up instantly and reach a state of magnetic force balance consistent with the center of the stator 13. The ratchet 4 moves up synchronously with the rotor through the connected shaft and separates from the sun gear 5 instantly, realizing the state of separation of the ratchet 4 before the water pump rotates, which solves the problem that the current ratchet separation structure needs to generate a pressure difference between the upper and lower parts of the impeller through the positive rotation of the water pump, so that the impeller drives the shaft to move toward the inlet, and synchronously drives the ratchet connected to the shaft to move and separate from the matching gear. When the water pump is at a low speed or when it is started, there is no pressure difference between the upper and lower parts of the impeller, and the ratchet cannot be separated immediately. The synchronous rotation of the ratchet and the shaft will cause the phenomenon of teeth hitting with the gear below, generating noise, and also affecting the life of the gear.

[0015] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0016] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve-pump integrated structure, comprising a valve-pump integrated mechanism (A), characterized in that: The valve-pump integrated mechanism (A) comprises a water valve housing (1), a water valve core (2), a water valve sealing gasket (3), a ratchet (4), a sun gear (5), a planetary gear (6), a spring pressure assembly (7), a fixing bolt (8), a pump head (9), an impeller (10) and a pump body (11). The water valve housing (1) and the pump body (11) are respectively connected and fixed to the pump head (9) by bolts and sealed by an O-ring to prevent leakage. The built-in valve core is connected to the gear set, the sun gear (5) and the planetary gear (6). (6) meshing, the ratchet (4) meshing with the sun gear (5); the ratchet (4) and the impeller (10) are interference fit with the water pump shaft, the spring pressure assembly (7) applies pressure to the sealing gasket, and the bottom of the valve-pump integrated mechanism (A) is provided with a water pump internal rotor (12), a stator (13) and a pre-stressed elastic body (14), the stator (13) is located on the outside of the water pump internal rotor (12), and the pre-stressed elastic body (14) is located on the top of the water pump internal rotor (12).

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