A new water medium retarder rotor impeller structure

Abstract

The utility model discloses a novel water medium retarder rotor impeller structure belongs to heavy load traffic transportation engineering technical field, and this rotor impeller structure includes rotor impeller and rotor shell, the rotor impeller outer surface is provided with rotor shell, the rotor impeller includes liquid outlet hole and curve vane, and the rotor shell includes inner recess and liquid outlet, according to the vortex trajectory diagram of water medium retarder, the liquid outlet hole of working cavity is evenly distributed on the rotor impeller, and the cooling liquid is thrown out with certain centrifugal force from the retarder brake vortex field at high speed, simultaneously, the back of rotor impeller is provided with curve vane, along with the rotation of curve vane, the cooling liquid is under the action of inertial centrifugal force, and makes radial motion from the center of impeller to the periphery, thereby backflows to the whole vehicle heat dissipation system through the rotor shell. The rotor impeller rotating speed is proportional to the cooling liquid flow rate and flow, thereby realizes the self -adaptation adjustment of water medium retarder water flow and its braking power.

Description

Technical Field

[0001] This utility model relates to the field of heavy-duty transportation engineering technology, specifically to a novel water-medium retarder rotor impeller structure. Background Technology

[0002] A water-medium retarder is an energy conversion device that works by converting mechanical energy into the thermal and pressure energy of the coolant based on the fluid vortex loss effect between the stator and rotor impellers. The water-medium retarder operates in three states: non-retardation braking, retardation braking activation, and retardation braking unloading.

[0003] Under vehicle braking conditions, the water-based retarder effectively solves the fatal safety problem of thermal friction failure caused by overheating of friction materials by diverting the braking load of traditional friction braking systems, significantly improving the safety performance of vehicles in conditions such as continuous braking on long downhill slopes. At the same time, the water-based retarder can also reduce the mechanical wear of the friction pairs in conventional brakes.

[0004] However, existing water-based retarder suffers from the following key technical bottlenecks that urgently need to be addressed:

[0005] 1. Cooling system energy loss: The rotor impeller speed is positively correlated with the braking power. A higher rotor impeller speed means more mechanical energy is converted into heat energy in the coolant, but it also means a larger coolant flow rate is needed to aid heat dissipation. The traditional solution is to add an extra water pump in the circulation loop and control the speed of this water pump through the control system to match the coolant flow rate of the water-medium retarder with its braking power. However, this leads to increased system complexity, increased energy consumption due to parasitic power loss of the water pump, and problems with lag in dynamic response.

[0006] 2. The existing coolant outlet structure adopts a fixed design with the back shell of the stator impeller. The outlet axis and the impeller rotation plane form a fixed angle that cannot be adjusted, which cannot meet the multi-directional installation requirements under the complex space constraints in the engine compartment. Utility Model Content

[0007] To address the technical problems mentioned in the background section, this application proposes a novel rotor impeller structure for a water-medium retarder. The technical solution adopted by this utility model is as follows:

[0008] A novel water medium retarder rotor impeller structure includes a rotor impeller and a rotor housing. The rotor impeller is fixedly sleeved and installed on a drive shaft, and a stator impeller is movably sleeved and installed on the drive shaft. The rotor housing is provided on the outer surface of the rotor impeller.

[0009] The rotor impeller includes liquid outlet holes and curved blades. The outer ring of the rotor impeller is provided with a plurality of liquid outlet holes near the shaft center end. The rotor impeller is provided with a plurality of curved blades on the outer side away from the stator impeller. The curved blades are disposed between the liquid outlet holes.

[0010] The rotor housing includes an inner groove, which is located on the rotor housing near the rotor impeller.

[0011] Furthermore, the rotor impeller also includes vortex blades, and a plurality of the vortex blades are arranged on the inner side of the rotor impeller near the stator impeller, and the liquid outlet is located on the inner side of the spacer cavity of the vortex blades near the shaft center.

[0012] Furthermore, the rotor impeller also includes flange fastening threaded holes and connecting holes, and a plurality of the flange fastening threaded holes and a plurality of the connecting holes are arranged in an array on the inner ring of the rotor impeller.

[0013] Furthermore, the rotor housing also includes a liquid outlet, and the inner groove is assembled with the outer end face of the rotor impeller on which the curved blades are provided to form a liquid discharge chamber. The liquid outlet located outside the rotor housing communicates with the liquid discharge chamber.

[0014] Furthermore, a one-way valve is fixedly installed at the end of the outlet away from the drainage chamber.

[0015] Furthermore, the stator impeller is fixedly connected to the outer surface of the rotor housing based on the stator impeller bolts.

[0016] This utility model discloses a novel rotor impeller structure for a water-medium retarder, which has at least one of the following beneficial effects:

[0017] 1. Based on the vortex trajectory diagram of the water-medium retarder, the outlet holes of the working chamber are evenly distributed on the rotor impeller. The coolant is thrown out at high speed with a certain centrifugal force from the braking vortex field. At the same time, this invention adds curved blades to the back of the rotor impeller. As the curved blades rotate, the coolant moves radially from the center of the impeller to the outer periphery under the action of inertial centrifugal force, and then flows back to the vehicle's cooling system through the rotor casing. The rotor impeller speed is directly proportional to the coolant flow rate and flow rate, thereby realizing the adaptive adjustment of the water flow rate of the water-medium retarder in relation to its braking power.

[0018] 2. By setting the liquid outlet on the rotor housing, and fixing the rotor housing to the stator impeller through circumferentially distributed bolt mounting holes, the water medium retarder can be installed by rotating the rotor housing at a certain angle when it is installed and matched with the vehicle engine, thereby meeting the installation angle requirements of different vehicle manufacturers for the liquid outlet.

[0019] 3. By utilizing the negative pressure effect, the dynamic sealing pressure of the lip seals on both sides of the water medium retarder is reduced, thereby solving the technical problem of high-pressure dynamic seal failure of the water medium retarder under high braking power conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first structure of the rotor impeller of a novel water medium retarder according to the present invention;

[0021] Figure 2 This is a schematic diagram of the second structure of the rotor impeller provided in an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the rotor housing of a novel water medium retarder rotor impeller structure according to this utility model;

[0023] Figure 4 A three-dimensional structural schematic diagram of the water medium retarder provided in the embodiment of this utility model;

[0024] Figure 5 A cross-sectional structural schematic diagram of the water medium retarder provided in this embodiment of the utility model;

[0025] Figure 6 A first structural schematic diagram of the stator impeller provided in an embodiment of this utility model;

[0026] Figure 7 This is a schematic diagram of the second structure of the stator impeller provided in an embodiment of the present utility model;

[0027] Figure 8 A three-dimensional structural schematic diagram of the turbulence column assembly provided in an embodiment of this utility model;

[0028] Figure 9 A schematic diagram of the cross-sectional structure of the bounced-up state of the turbulence column assembly provided in this embodiment of the utility model;

[0029] Figure 10 A schematic cross-sectional view of the turbulence column assembly under extreme compression state provided in an embodiment of this utility model.

[0030] The components include: 1. Drive shaft; 2. Stator impeller; 3. Rotor impeller; 4. Turbulence column assembly; 5. Rotor housing; 6. Check valve; 201. Spacer blades; 202. Stator impeller inlet groove; 203. Inlet; 204. Stator impeller exhaust port; 205. Mounting groove; 206. Residual liquid discharge port; 207. Stator impeller bolts; 301. Vortex blades; 302. Outlet hole; 303. Curved blades; 304. Flange fastening threaded hole; 305. Connecting hole; 401. Stroke cylinder; 402. Turbulence column base; 403. Spring; 404. Top cover; 405. Stroke rod; 406. Turbulence column top block; 407. Pressure guiding channel; 501. Inner groove; 502. Outlet. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] like Figure 1-3 and Figure 5 As shown, a novel water medium retarder rotor impeller structure includes a rotor impeller 3 and a rotor housing 5. The rotor impeller 3 is fixedly sleeved and installed on a drive shaft 1. A stator impeller 2 is also movably sleeved and installed on the drive shaft 1. The rotor housing 5 is provided on the outer surface of the rotor impeller 3.

[0033] The rotor impeller 3 includes a liquid outlet hole 302 and curved blades 303. The outer ring of the rotor impeller 3 is provided with a plurality of liquid outlet holes 302 near the shaft center end. The outer side of the rotor impeller 3 away from the stator impeller 2 is provided with a plurality of curved blades 303. The curved blades 303 are disposed between the liquid outlet holes 302.

[0034] The rotor housing 5 includes an inner groove 501, which is located on the side of the rotor housing 5 near the rotor impeller 3.

[0035] In this embodiment, a working chamber is formed between the rotor impeller 3 and the stator impeller 2. When the water medium retarder is in the retarding braking working state, the coolant in the vehicle's cooling system enters the working chamber from the stator impeller 2. Driven by the drive shaft 1 connected in series with the engine crankshaft, the rotor impeller 3 rotates synchronously. Driven by the rotor impeller 3, the coolant undergoes vortex loss pressurization motion from the center area of ​​the working chamber to the outer area, converting the mechanical energy of the rotor impeller 3 into the heat energy and pressure energy of the coolant, thereby reducing the speed of the drive shaft 1 to achieve the purpose of retarding. After the coolant undergoes vortex loss pressurization motion in the working chamber, the coolant is thrown out to the outside of the rotor impeller 3 into the inner groove 501 along the evenly distributed outlet holes 302, and undergoes centrifugal motion under the rotation of the curved blades 303. Finally, it flows back to the vehicle's cooling system through the rotor housing 5 for heat dissipation and cooling. Based on the vortex trajectory diagram of the water-medium retarder, this application evenly distributes the outlet holes 302 of the working chamber on the rotor impeller 3. Coolant is ejected at high speed from the braking vortex field with a certain centrifugal force. Simultaneously, this invention adds curved blades 303 to the back of the rotor impeller 3. As the curved blades 303 rotate, the coolant moves radially from the impeller center to the outer periphery under the action of inertial centrifugal force, thus returning to the vehicle's cooling system via the rotor housing 5. The rotor impeller 3's rotational speed is directly proportional to the coolant flow rate and velocity, thereby achieving adaptive adjustment of the water flow rate of the water-medium retarder in relation to its braking power.

[0036] In one embodiment, the rotor impeller 3 further includes vortex blades 301. A plurality of vortex blades 301 are provided on the inner side of the rotor impeller 3 near the stator impeller 2, and the liquid outlet hole 302 is provided on the inner side of the spacer cavity of the vortex blades 301 near the axis.

[0037] In this embodiment, the vortex blades 301 are used to convert the mechanical energy of the rotor impeller 3 into the thermal and pressure energy of the coolant, and the outlet hole 302 is used to discharge the coolant with a certain amount of thermal and pressure energy from the working chamber.

[0038] In one embodiment, the rotor impeller 3 further includes a flange fastening threaded hole 304 and a connecting hole 305, and a plurality of the flange fastening threaded holes 304 and a plurality of the connecting holes 305 are arranged in an array on the inner ring of the rotor impeller 3.

[0039] In this embodiment, the flange fastening threaded hole 304 is used to fix the rotor impeller 3 and the drive shaft 1 with the flange, thereby realizing the synchronous rotation of the rotor impeller 3 driven by the drive shaft 1. As the curved blades 303 on the outside of the rotor impeller 3 rotate, the coolant moves radially from the center of the rotor impeller 3 to the outer periphery under the action of inertial centrifugal force, thereby forming a low-pressure area in the area of ​​the curved blades 303 near the central axis. This low-pressure area is directly connected to the front end of the rotor lip seal on the side of the rotor impeller 3. The connecting hole 305 is used to connect the front end of the stator lip seal on the side of the stator impeller 2 with the low-pressure area, thereby reducing the sealing pressure of the lip seals on both sides of the water medium retarder (rotor impeller 3 side and stator impeller 2 side).

[0040] In one embodiment, the rotor housing 5 further includes a liquid outlet 502. The inner groove 501 is assembled with the outer end face of the rotor impeller 3 on which the curved blades 303 are provided to form a liquid discharge chamber. The liquid outlet 502, which is located outside the rotor housing 5, communicates with the liquid discharge chamber.

[0041] In this embodiment, the coolant enters the drain chamber through the outlet hole 302. As the curved blade 303 in the drain chamber rotates, the coolant moves radially from the center of the impeller to the outer periphery under the action of inertial centrifugal force, and flows back to the vehicle cooling system from the outlet 502 on the periphery of the drain chamber.

[0042] In one embodiment, a one-way valve 6 is fixedly installed at the end of the outlet 502 away from the drain chamber.

[0043] In this embodiment, the one-way valve 6 is used to control the direction of coolant return.

[0044] In one embodiment, the outer surface of the rotor housing 5 is fixedly connected to the stator impeller 2 based on the stator impeller bolts 207.

[0045] In this embodiment, the outer surface of the rotor housing 5 is provided with a plurality of bolt mounting holes, and the outer surface of the stator impeller 2 is provided with a plurality of stator impeller bolts 207. By fixing the stator impeller bolts 207 into the bolt mounting holes, the rotor housing 5 and the stator impeller 2 are fixedly connected. Furthermore, the rotor housing 5 can be rotated at a certain angle for installation and fixing, thereby meeting the installation angle requirements of different vehicle manufacturers for the liquid outlet 502.

[0046] This embodiment of a novel water-medium retarder rotor impeller structure has multiple specific application embodiments, including but not limited to:

[0047] like Figure 4-10As shown, in one embodiment, a stator impeller 2 is movably mounted on the drive shaft 1. The stator impeller 2 includes spacer blades 201, a stator impeller inlet groove 202, an inlet 203, and a mounting groove 205. The stator impeller 2 has a plurality of spacer blades 201 on its inner side near the rotor impeller 3. The stator impeller inlet groove 202 is provided on the outer end face of the stator impeller 2. The stator impeller inlet groove 202 is provided with a plurality of inlets 203. The inlets 203 penetrate the stator impeller 2 and the spacer blades 201. The stator impeller 2 has a plurality of mounting grooves 205 on its side. A turbulence column assembly 4 is fixedly installed in the mounting groove 205. In the non-slow braking working state, the turbulence column assembly 4 is used to disturb and destroy the air vortex field between the rotor impeller 3 and the stator impeller 2, thereby reducing idling loss. The end face of the top of the turbulence column top block 406 is set as a curved surface that is consistent with the geometric relationship of the flow field cavity of the stator impeller 2.

[0048] In this embodiment, when the water-medium retarder is in the retarding braking working state, the coolant, which serves as the working medium, is transported from the vehicle's cooling system to the stator impeller inlet groove 202 of the stator impeller 2. Under continuous pressure, the coolant enters the working chamber through the inlet 203 in the stator impeller inlet groove 202 to undergo vortex loss pressurization motion. At the same time, the top block 406 of the turbulence column in the working chamber is compressed into the mounting groove 205 under pressure, so that the curved surface of the top of the turbulence column top block 406 is smoothly connected to the working chamber, avoiding the turbulence column assembly 4 from affecting the vortex loss pressurization motion of the coolant.

[0049] In one embodiment, the stator impeller 2 further includes a stator impeller vent hole 204 and a residual liquid discharge port 206. The stator impeller vent hole 204 is provided on the outer end face of the stator impeller 2, and the stator impeller vent hole 204 penetrates the stator impeller 2 and the spacer blade 201. A plurality of residual liquid discharge ports 206 are provided in the stator impeller inlet groove 202 near the stator impeller vent hole 204, and the residual liquid discharge ports 206 penetrate the stator impeller 2.

[0050] In this embodiment, the stator impeller vent 204 is used to expel air from the working chamber when coolant is delivered to the working chamber, increasing the coolant capacity while preventing air from affecting the intensity of the coolant vortex erosion and pressurization motion. The residual liquid discharge port 206 is used to collect the residual coolant in the stator impeller 2 during slow braking and unloading. When the coolant is delivered to the working chamber, most of the coolant enters the working chamber through the inlet 203 in the stator impeller inlet groove 202, while a small amount of coolant enters the working chamber through the residual liquid discharge port 206 via the stator impeller inlet groove 202.

[0051] In one embodiment, the turbulence column assembly 4 includes a stroke cylinder 401, which is sleeved within the mounting groove 205. A turbulence column base 402 fixedly disposed at the bottom of the stroke cylinder 401 is fixedly connected to one end of a spring 403, and the other end of the spring 403 is fixedly connected to a stroke rod 405. The stroke rod 405 passes through the top cover 404 at the top of the stroke cylinder 401 and is fixedly connected to a turbulence column top block 406. The top of the turbulence column top block 406 is configured as a curved surface consistent with the geometric relationship of the flow field cavity of the stator impeller 2. The stator impeller 2 on one side of the mounting groove 205 is also provided with a pressure guiding channel 407, which connects the flow field of the stator impeller 2 and the interior of the stroke cylinder 401.

[0052] In this embodiment, the stroke rod 405 is square, and the guide groove inside the top cover 404 is designed to be square. In the non-slow braking working state, the sum of the flow field impact force exerted on the top of the turbulence column by the air vortex loss flow field in the working chamber and the high-pressure airflow pressure received by the bottom plunger of the stroke rod 405 is less than the elastic force of the spring 403. At this time, the turbulence column assembly 4 is in the popped-up state, and the spring 403 pops up the top block 406 of the turbulence column, so that the top of the top block 406 of the turbulence column extends beyond the mounting groove 205 into the working chamber, causing the air vortex loss flow field in the working chamber to be disturbed and destroyed by the top block 406 of the turbulence column, thereby reducing the idling loss of the rotor impeller 3 in the non-slow braking working state. When the slow braking is activated, the combined force of the flow field impact exerted on the top of the turbulence column by the coolant vortex loss flow field in the working chamber and the high-pressure airflow pressure on the bottom plunger of the stroke rod 405 is greater than the elastic force of the spring 403. At this time, the turbulence column assembly 4 is in a state of extreme compression, that is, the top block 406 of the turbulence column is completely retracted into the mounting groove 205, and the top curved surface of the top block 406 of the turbulence column is smoothly connected to the flow field cavity of the stator impeller 2. At this time, the turbulence column assembly 4 will not cause disturbance or damage to the braking flow field, thus solving the problem that the top protrusion of the traditional turbulence column still damages the braking flow field and reduces the braking torque.

[0053] The present invention and its embodiments have been described above. This description is not restrictive. The accompanying drawings are only one embodiment of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A novel rotor impeller structure for a water-medium retarder, characterized in that: It includes a rotor impeller (3) and a rotor housing (5). The rotor impeller (3) is fixedly mounted on the drive shaft (1). A stator impeller (2) is also movably mounted on the drive shaft (1). The rotor housing (5) is provided on the outer surface of the rotor impeller (3). The rotor impeller (3) includes a liquid outlet hole (302) and curved blades (303). The outer ring of the rotor impeller (3) is provided with a plurality of liquid outlet holes (302) near the shaft center end. The rotor impeller (3) is provided with a plurality of curved blades (303) on the outer side away from the stator impeller (2). The curved blades (303) are disposed between the liquid outlet holes (302). The rotor housing (5) includes an inner groove (501), which is located on the rotor housing (5) near the rotor impeller (3).

2. The novel water-medium retarder rotor impeller structure according to claim 1, characterized in that: The rotor impeller (3) also includes vortex blades (301). The rotor impeller (3) has a plurality of vortex blades (301) arranged on the inner side near the stator impeller (2). The liquid outlet hole (302) is located on the inner side of the spacer cavity of the vortex blades (301) near the shaft center.

3. The novel water medium retarder rotor impeller structure according to claim 2, characterized in that: The rotor impeller (3) also includes flange fastening threaded holes (304) and connecting holes (305), and a plurality of flange fastening threaded holes (304) and a plurality of connecting holes (305) are arranged in an array on the inner ring of the rotor impeller (3).

4. The novel water-medium retarder rotor impeller structure according to claim 1, characterized in that: The rotor housing (5) also includes a liquid outlet (502). The inner groove (501) and the outer end face of the rotor impeller (3) with the curved blade (303) are assembled to form a liquid discharge chamber. The liquid outlet (502) located outside the rotor housing (5) is connected to the liquid discharge chamber.

5. The novel water-medium retarder rotor impeller structure according to claim 4, characterized in that: A one-way valve (6) is fixedly installed at the end of the outlet (502) away from the drain chamber.

6. The novel water-medium retarder rotor impeller structure according to claim 1, characterized in that: The outer surface of the rotor housing (5) is fixedly connected to the stator impeller (2) based on the stator impeller bolts (207).

Images