WO2021194187A1 - Pompe à rotor denté à capacité variable - Google Patents

Pompe à rotor denté à capacité variable Download PDF

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Publication number
WO2021194187A1
WO2021194187A1 PCT/KR2021/003497 KR2021003497W WO2021194187A1 WO 2021194187 A1 WO2021194187 A1 WO 2021194187A1 KR 2021003497 W KR2021003497 W KR 2021003497W WO 2021194187 A1 WO2021194187 A1 WO 2021194187A1
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WO
WIPO (PCT)
Prior art keywords
gear
fluid
moving
gerotor pump
fixed
Prior art date
Application number
PCT/KR2021/003497
Other languages
English (en)
Korean (ko)
Inventor
장순길
Original Assignee
장순길
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020200169039A external-priority patent/KR102370387B1/ko
Application filed by 장순길 filed Critical 장순길
Publication of WO2021194187A1 publication Critical patent/WO2021194187A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/185—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by varying the useful pumping length of the cooperating members in the axial direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/103—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts

Definitions

  • the present disclosure relates to a variable displacement gerotor pump, and more particularly, to a variable displacement gerotor pump capable of adjusting a discharge amount per rotation by adjusting a meshing width of two gears.
  • a gerotor pump also referred to as a trochoid pump, generally creates a flow of fluid while a gear and a gear repeat meshing and separation, and the flow rate is proportional to the meshing width of the gear and gear.
  • have a configuration According to such a configuration, if the meshing width between the internal gear and the external gear in the gerotor pump can be changed, the discharge amount per rotation can also be changed. For example, in a gerotor pump, changing the meshing width of the gears can be achieved by moving the two gears axially in opposite directions.
  • the hydraulic pump or hydraulic motor can be implemented using vanes, pistons, gears, etc., and has different characteristics depending on the configuration thereof.
  • a hydraulic pump and a hydraulic motor using a gear have a very simple structure, it is difficult to manufacture a variable capacity type.
  • the variable capacity pump according to the prior art has problems in that it is difficult to manufacture and repair due to its complex structure, and the manufacturing cost and maintenance cost are high.
  • variable capacity gerotor pump having a simple structure in which a gear and a gear meshing width are changed by moving a gear in the axial direction in the gerotor pump, and fluid does not leak.
  • the simple structure and characteristics of the girotor pump can be maintained as much as possible even in the variable capacity girotor pump.
  • the configuration of the variable displacement girotor pump can also be applied to the manufacture of a variable displacement girotor motor.
  • Another object of the present invention is to provide a variable capacity gerotor pump capable of maintaining the hydraulic pressure of the discharge pumping chamber and the discharge amount per hour within a certain range regardless of the rotational speed of a shaft driving the pump.
  • the variable displacement gerotor pump having such a configuration may be used in connection with a shaft whose speed frequently changes rapidly, such as a crankshaft of an automobile.
  • the casing in the variable capacity gerotor pump, has a cylindrical shape and is provided with one or more pumping chambers having one or more fluid inlets formed at one end, and the fluid is inserted into the casing at a fixed position.
  • It rotates in a leak-free manner has a cylindrical shape, has a plurality of teeth formed therein, and includes at least one fluid hole at one end of the cylindrical body to allow fluid to move from or to the pumping chamber a fixed gear, which is an internal gear, which is installed inside the fixed gear and meshes with the fixed gear in a fluid-free manner, and includes one less number of teeth than the number of the plurality of teeth of the fixed gear, in the axial direction
  • At least one movable gear which is arranged in such a way that there is no leakage of fluid inside the fixed gear, is in contact with one end of the movable gear, and is an axially movable gear block, which is arranged outside of the moving gear to prevent the flow of fluid a gear ring movable axially with respect to the moving gear in a leak-free manner, and a gear ring cover installed at one end of the casing, the gear ring cover including a hole in which the gear ring rotates in a fluid-free manner; .
  • one end of the fixed gear is in contact with the gear ring cover and the gear ring in a fluid-free manner, and one end of the moving gear is the gear block In such a way that there is no leakage of fluid, the other end of the moving gear is installed through the gear ring.
  • the gear block bolt, the moving gear sleeve, or the moving gear cavity shaft is configured such that the gear block does not leak fluid from the contact surface of the moving gear and the gear block. It is configured to be rotatable, and configured such that the moving gear and the gear block can move together in an axial direction.
  • the moving gear joint shaft and the moving gear are inserted through the moving gear hole formed in the central part of the moving gear and include a sleeve at at least one end. It further includes a moving gear shaft inserted through the hole formed in the central portion of the common shaft.
  • the movable gear shaft support device is installed on the outside of the gear ring cover to fix and support at least one end of the movable gear shaft.
  • the pump in the variable displacement gerotor pump, further includes a drive flange connected to the fixed gear and configured to rotate the fixed gear.
  • a hydraulic chamber formed on the other side of the gear block having one side in contact with the moving gear, and the one or more fluid inlets are provided inside the casing. It further includes a fluid connection passage configured to move the fluid flowing into the formed one or more pumping chambers to the hydraulic chamber.
  • variable displacement gerotor pump in the variable displacement gerotor pump, it further includes a spring having a restoring force capable of balancing a force with respect to a force acting on the gear block in the hydraulic chamber.
  • variable displacement gerotor pump in the variable displacement gerotor pump, it further includes a spring support capable of fixing the spring.
  • a casing having a cylindrical shape and having one or more pumping chambers each having one or more fluid inlets and one or more fluid outlets formed at both ends thereof, the fluid in a fixed position inserted into the casing rotates in a leak-free manner, has a cylindrical shape, a plurality of teeth are formed inside the cylindrical shape, and at least one fluid hole is provided at both ends of the cylindrical shape so that the fluid can move from or to the pumping chamber.
  • a fixed gear which is an internal gear comprising: installed inside the fixed gear and engaged with the fixed gear in a fluid-free way, including one less number of teeth than the number of teeth of the fixed gear, and 2 movable in the axial direction two moving gears, arranged in such a way that there is no leakage of fluid inside the fixed gear, a gear block installed between the two moving gears and movable in the axial direction, arranged outside the two moving gears to prevent leakage of fluid
  • Two gear rings movable in the axial direction with respect to each of the two moving gears in a non-existent manner, and a hole respectively installed at both ends of the casing, in which the two gear rings rotate in a fluid-free manner, respectively Includes two gear ring covers including
  • variable capacity girotor pump or a variable capacity girotor motor can be implemented with minimal changes to a simple structure of a general girotor pump or a girotor motor, the variable capacity girotor pump or motor It is easy to manufacture and maintain, and the cost is low, so it is economical.
  • variable displacement gerotor pump may be used alone as a variable displacement gerotor pump and a variable displacement gerotor motor.
  • it can be applied to various fields by connecting the variable capacity gerotor pump and the variable capacity gerotor motor to a continuously variable transmission of a vehicle, a continuously variable power distribution device, and the like.
  • the discharge amount per rotation is proportional to the width of the meshing gear. Therefore, according to the present disclosure, it is possible to make a variable displacement gerotor pump with a large discharge amount per rotation by adjusting the width of the meshing gear.
  • variable displacement gerotor pump of the present disclosure in the variable capacity gerotor pump, a change in the discharge amount per rotation is possible in various ranges including a value of 0, and a mechanical burden caused by a large change in the discharge amount per rotation does not occur. Accordingly, the variable displacement gerotor pump of the present disclosure can be effectively used for various purposes, including an environment in which the discharge amount per rotation or the hydraulic pressure varies greatly.
  • FIG. 1 is an exploded perspective view of a variable displacement gerotor pump according to an embodiment of the present disclosure
  • FIG. 2 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 1 .
  • FIG. 3 is a cross-sectional view taken perpendicular to the shaft with respect to the outside of the gear ring cover of the variable capacity gerotor pump of FIG. 2 .
  • FIG. 4 is a cross-sectional view of one end of the casing in which the pumping chamber of the variable capacity gerotor pump of FIG. 2 is located.
  • FIG. 5 is a cross-sectional view taken from the outside of the casing of the variable displacement gerotor pump of FIG. 2 .
  • FIG. 6 is a cross-sectional view taken from the outside of the casing in which the gear block of the variable displacement gerotor pump of FIG. 2 is located.
  • FIG. 7 is a cross-sectional view of the variable capacity gerotor pump of FIG. 2 taken from the outside of the casing at a position where the inside of the fixed gear inside the casing is an empty space.
  • FIG. 8 is a cross-sectional view of the variable displacement gerotor pump of FIG. 2 taken from the outside of the casing casing cover.
  • FIG. 9 is an exploded perspective view of a variable displacement gerotor pump according to another embodiment of the present disclosure.
  • FIG. 10 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 9;
  • FIG. 11 is an exploded perspective view of a variable displacement gerotor pump according to another embodiment of the present disclosure.
  • FIG. 12 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 11 .
  • FIG. 13 is an exploded perspective view of a variable displacement gerotor pump according to another embodiment of the present disclosure.
  • FIG. 14 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 13 .
  • variable displacement gerotor pump 15 is an exploded perspective view of a variable displacement gerotor pump according to another embodiment of the present disclosure.
  • 16 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 15;
  • 17 is an exploded perspective view of a variable displacement gerotor pump according to another embodiment of the present disclosure.
  • FIG. 18 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 17;
  • variable capacity gerotor pump or motor according to various embodiments of the present invention will be described with reference to the accompanying drawings.
  • detailed descriptions of well-known functions or configurations will be omitted.
  • the shape of the central shaft, and/or the device or components for maintaining the connection between the moving gear and the gear block may be interchangeably applied and combined in various ways.
  • variable capacity gerotor pump and the variable capacity gerotor motor may include the same or similar structures. Accordingly, descriptions regarding the structure of the variable displacement gerotor pump according to some embodiments may be applied to a variable displacement gerotor motor including the same components or structures.
  • variable displacement gerotor pump comprises a fixed gear 1 , a gear block 2 , a drive flange 5 , a moving gear 11 , a gear ring 12 , a moving gear shaft 13 , a gear It may include a block bolt 15 , a nut 16 , spherical washers 17 , 18 , a casing 21 , a gear ring cover 22 , and a casing cover 23 .
  • the fixed gear 1 is an internal gear, and a plurality of fluid holes 3 may be formed at one end.
  • the driving flange 5 may be connected to the fixed gear 1 and serve to rotate the fixed gear 1 .
  • the gear ring 12 can move in the axial direction without leakage of fluid from the outside of the moving gear 11 , and can rotate without leakage of fluid from the hole of the gear ring cover 22 .
  • the gear block 2 may move in the axial direction without leakage of fluid inside the fixed gear 1 , and may move in the axial direction without leakage of fluid by contacting one side of the moving gear 11 .
  • the shape of teeth of the fixed gear 1 and the moving gear 11 is not limited to the shape shown in FIG. 1 , and various teeth used in the conventional gerotor pump may be used.
  • the fixed gear 1 is an internal gear, and the moving gear 11 may be located inside the fixed gear 1 . At this time, the number of teeth of the moving gear 11 may be one less than the number of teeth of the fixed gear 1 .
  • the fixed gear 1 and the moving gear 11 may be rotated in a state in which the teeth of both gears are meshed inside the casing 21, and fluid does not leak between the meshed teeth.
  • the fixed gear 1 can rotate without leakage of fluid in the casing 21 .
  • the fixed gear 1 may be limited in movement in the axial direction.
  • the moving gear 11 may move in the axial direction.
  • One end of the fixed gear 1 is in contact with the driving flange 5 , and the other end is in contact with the gear ring 12 and the gear ring cover 22 to enable rotation without leakage of fluid.
  • One end of the moving gear 11 may be in contact with the gear block 2 to enable rotation without leakage of fluid, and the other end of the moving gear 11 may pass through the gear ring 12 .
  • the gear block 2 can move without leakage of fluid in the axial direction inside the fixed gear 1 .
  • One or more fluid holes 3 may be formed at one end of the fixed gear 1 .
  • the fluid hole 3 may serve as a passage through which the fluid can move between the inside of the fixed gear 1 and the pumping chambers 26 and 27 of the casing 21 .
  • the thickness of the gear block 2 may be greater than or equal to the width of the fluid hole 3 .
  • the gear ring 12 can move without leakage of fluid from the outside of the moving gear 11 in the axial direction, and can rotate without leakage of fluid by being inscribed in the hole of the gear ring cover 22 .
  • pumping chambers 26 and 27 are formed on one side and the other side thereof, respectively, and in each pumping chamber 26 and 27, a fluid inlet connected to the outside of the casing 21 ( 24, 25) may be located.
  • the pumping chambers 26 and 27 and the fluid inlets 24 and 25 formed in the casing 21 are shown as two, but the present invention is not limited thereto.
  • 25) may be installed in a singular number or a plurality of 3 or more.
  • one pumping chamber 26, 27 may suffice and the other may be open.
  • the tank containing the fluid can serve as another pumping chamber.
  • a gear ring cover 22 may be installed on the side where the fluid inlets 24 and 25 of the casing 21 are located.
  • a casing cover 23 may be installed on the opposite side of the gear ring cover.
  • the gear block bolt 15 can pass through the bolt hole 14 in the moving gear shaft 13 located on one side of the moving gear 11 , and the gear block hole 4 in the gear block 2 . .
  • the nut 16 and the spherical washers 17 and 18 may allow the gear block 2 to rotate without fluid leaking from the contact surface of the moving gear 11 and the gear block 2 .
  • the distance between the moving gear 11 and the gear block 2 can be adjusted so that they can move together in the axial direction.
  • the gear block bolt 15, the nut 16 and the spherical washers 17, 18 are shown to be used, but are limited thereto.
  • the moving gear shaft 13 and the gear block 2 may be brought into contact with the outside of the casing 21 using a clamp-type mechanism.
  • a clamp-type mechanism For example, for this purpose, the structure and method disclosed in FIG. 11 or FIG. 17, which will be described later, may be used.
  • the fixed gear 1 and the moving gear 11 may be sequentially positioned inside the casing 21 .
  • the fixed gear 1 can rotate in a fixed position as an internal gear.
  • the moving gear 11 that rotates in mesh with the fixed gear 1 may move in the axial direction to change the meshing width of the fixed gear 1 and the moving gear 11 to adjust the discharge amount per rotation.
  • FIG. 2 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 1 .
  • FIG. 2 may be a cross-sectional view of the variable capacity gerotor pump cut at the position indicated by the arrow 47 of FIG. 5, which will be described later.
  • the variable displacement gerotor pump comprises: a fixed gear 1 , a moving gear 11 , a casing 21 , a gear block 2 , a gear ring 12 , a gear block bolt 15 , and a drive flange (5), may include a gear ring cover 22 and a casing cover 23, and may include a spline gear 6 on the inside of the drive flange (5).
  • rotation of the fixed gear 1 and the moving gear 11 may be required to operate as a pump.
  • the rotational force may be transmitted from the outside through the drive flange 5 connected to the fixed gear 1 .
  • the rotational force may be transmitted to the pump manually by a user, or may be transmitted to the pump by a motor (not shown).
  • a high pressure fluid may be supplied through at least one of the fluid inlets 24 and 25, and in this case, the pump may operate as a hydraulic motor.
  • the rotational force may include a belt connected to at least one of a moving gear 11 , a gear ring 12 , a moving gear shaft 13 , a fixed gear 1 , a gear block 2 or a drive flange 5 , It can be transmitted by chains, gears, etc.
  • the meshing width between the fixed gear 1 and the moving gear 11 is not maximized, and it can be seen that a part of the moving gear 11 protrudes considerably to the left of the gear ring cover 22 .
  • the shaft shifting means or control device (not shown) is the shifting gear shaft 13 , the gear block 2 , the shifting gear 11 , the gear block bolt 15 , the nut 16 , or the spherical washer 17 . , 18) can be used in connection with, etc.
  • FIG. 3 is a cross-sectional view taken in a direction perpendicular to an axis with respect to the gear ring cover outside 41 of the variable displacement gerotor pump of FIG. 2 .
  • FIG. 3 may be a cross-section cut from the outer 41 of the gear ring cover of FIG. 2 .
  • the gear ring 12, the moving gear 11, the moving gear shaft 13, and the block bolt 15 may be sequentially installed. Accordingly, it is possible to prevent the fluid from flowing between the respective components.
  • FIG. 4 is a cross-sectional view of one end of the casing 21 in which the pumping chambers 26 and 27 of the variable capacity gerotor pump of FIG. 2 of the present disclosure are located. Referring to FIG. 2 , FIG. 4 may be a cross-sectional view of one end 42 of the casing in which the pumping chamber is located.
  • a plurality of fluid movement chambers 28 may be formed by contacting the teeth of the fixed gear 1 and the teeth of the moving gear 11 .
  • Each fluid moving chamber 28 may be a space surrounded by the fixed gear 1 , the moving gear 11 , the gear block 2 , the gear ring 12 , and the gear ring cover 22 .
  • the plurality of fluid holes 3 at one end of the fixed gear 1 may be passageways through which the fluid flows between the fluid moving chamber 28 and the pumping chambers 26 and 27 . Fluid does not pass between the meshed fixed gear (1) and the moving gear (11). That is, in a state in which the fixed gear 1 and the moving gear 11 do not rotate, the fluid movement in the pumping chambers 26 and 27 and the plurality of fluid movement chambers 28 does not occur.
  • the volume of the fluid moving chambers 28 on the left side in FIG. 4 is gradually increased, and thus The volumes of the fluid moving chambers 28 arranged at opposite positions may gradually decrease. Therefore, when the fluid transfer chamber 28 moves from the left pumping chamber 26 to the right pumping chamber 27, the fluid in the left pumping chamber 26 is placed in the fluid transfer chamber 28 and the right pumping chamber 27 can be moved to The pump action may be implemented by discharging the fluid to the right fluid inlet 25 when the pressure of the right pumping chamber 27 into which the fluid is introduced increases.
  • the pressure of the left pumping chamber 26 from which the fluid flows is lowered, so that the fluid can be sucked through the left fluid inlet 24 .
  • the rotational directions of the fixed gear 1 and the moving gear 11 may be reversed.
  • the movement direction of the fluid movement chamber 28 and the flow of the fluid can also be reversed, and the left pumping chamber 26 and the fluid inlet 24 have the above-described roles of the right pumping chamber 27 and the fluid inlet 25, respectively.
  • each of the pumping chambers 26 and 27 may be a discharge pumping chamber in which fluid is discharged or a suction pumping chamber in which fluid is sucked, depending on the rotation directions of the fixed gear 1 and the moving gear 11 . .
  • FIG. 5 is a cross-sectional view taken from the outside of the casing of the variable displacement gerotor pump of FIG. 2 .
  • FIG. 5 may be a cross-sectional view taken from the outer 43 position of the casing.
  • the fixed gear 1 , the moving gear 11 , the moving gear shaft 13 , and the block bolt 15 may be sequentially installed inside the casing 21 .
  • a plurality of fluid moving chambers 28 may be formed by contacting the teeth of the fixed gear 1 and the teeth of the moving gear 11 .
  • the fluid hole 3 of the fixed gear 1 and the pumping chambers 26 and 27 of the casing 21 may not be visible in the cross-sectional view cut at the position of the exterior 43 of the casing 21 .
  • FIG. 6 is a cross-sectional view taken from the outer 44 of the casing in which the gear block of the variable displacement gerotor pump of FIG. 2 is located. Referring to FIG. 2 , FIG. 6 may be a cross-sectional view taken from the position of the casing outside 44 where the gear block is located. Inside the casing 21, the fixed gear 1, the gear block 2, the spherical washer 18 and the gear block bolt 15 may be installed. Accordingly, it is possible to prevent the fluid from flowing between the respective components.
  • FIG. 7 is a cross-sectional view of the variable capacity gerotor pump of FIG. 2 cut by reference 45 outside the casing at a position where the inside of the fixed gear inside the casing is empty.
  • FIG. 7 may be a cross-sectional view of a position where the inside of the fixed gear inside the casing is an empty space with reference to the outside of the casing 45 . 7 shows a cross section of the casing 21 and the fixed gear 1 inside the casing.
  • FIG. 8 is a cross-sectional view taken with reference to the outer 46 of the casing of the variable displacement gerotor pump of FIG. 2 . 8 shows a cross section of the casing cover 23 and the drive flange 5 .
  • the inside of the variable capacity gerotor pump includes a structure in which the fluid does not flow out. Also, referring to FIG. 4 , as the fixed gear 1 and the moving gear 11 rotate inside the variable displacement gerotor pump, the fluid moves, so that the pumping action can be performed.
  • a shaft moving means or a control device (not shown) inside the fixed gear 1 is connected to the moving gear shaft 13, the moving gear 11 or the gear block 2 to the moving gear 11, and the moving gear shaft ( 13) and the gear block 2 can move together in the axial direction.
  • the meshing width of the fixed gear 1 and the moving gear 11 is changed, the distance between the gear ring 12 and the gear ring cover 22 in the gear block 2 is changed, and the fluid movement chamber is changed. (28) can change its volume as the width is changed.
  • the pump action is executed to change the amount of fluid moved when the fluid moving chamber 28 moves the fluid, and thus the amount of fluid sucked is changed, The amount of fluid discharged can be changed.
  • variable displacement gerotor pump includes a casing 121 , a fixed gear 101 , a gear block 102 , a first moving gear 111 , a second moving gear 110 , and a first gear ring ( 12 ), a second gear ring 112 , a first gear ring cover 22 , a second gear ring cover 122 , and a gear block bolt 15 .
  • the variable displacement gerotor pump of FIG. 9 is a modification of the variable displacement gerotor pump of FIG. 1 described above, and includes two moving gears 111 and 110 , two gear rings 12 and 112 and two gear ring covers. (22, 122).
  • the fluid outlets 124 , 125 , 224 , and 225 may include first fluid outlets 124 and 125 at one end of the casing 121 and second fluid outlets 224 and 225 at the other end of the casing 121 .
  • the fluid outlets 124 , 125 , 224 , and 225 may distribute the discharge amount per rotation differently if necessary when the sum of the discharge amounts per rotation is constant.
  • Fluid holes 103 may be formed at both ends of the fixed gear 101 , and a plurality of pumping chambers 126 , 127 , 226 , 227 may be formed in the same shape at both ends of the casing 121 , respectively.
  • Each configuration shown in Fig. 9 can perform the same or similar functions as the corresponding configuration of Fig. 1 described above.
  • variable capacity gerotor pump shown in FIG. 9 may be a symmetrical contact of two variable capacity gerotor pumps of FIG. 1 described above. Accordingly, the variable displacement gerotor pump of FIG. 9 may have the same or similar functions and effects as the variable displacement gerotor pump of FIG. 1 .
  • the rotational force may be transmitted from the outside through the first moving gear shaft 113 and the second moving gear shaft 115 .
  • the rotational force cuts the middle part of the casing 121 and exposes the central part of the fixed gear 101 to the outside of the casing 121, and then uses a gear, a belt, or a chain to remove the fixed gear 101 from the outside.
  • the method of receiving the rotational force is not limited thereto, and the first moving gear 111 , the second moving gear 110 , the first gear ring 12 , the second gear ring 112 , and the first moving gear shaft 113 . ), a second moving gear shaft 115 , a belt, a chain, a gear, or a shaft may be connected to the fixed gear 101 to transmit rotational force.
  • Gear block bolts 15 and nuts 16 may pass through bolt holes 114 , 116 located in moving gear shafts 113 , 115 , and gear block holes 104 in gear block 102 . Due to this, the fluid may not leak from the contact surfaces of the first moving gear 111 , the second moving gear 110 , and the gear block 102 . In addition, the distance and pressure between the respective components are adjusted so that the first moving gear 111 , the second moving gear 110 , and the gear block 102 can move in the axial direction at the same time. At this time, the gear block 102 may be inscribed with the fixed gear 101 so that the rotation speed of the first moving gear 111 and the second moving gear 110 may be different.
  • the gear block 102 when the gear block 102 does not coincide with the center of the first moving gear 111 and the second moving gear 110, the gear block 102 is the first moving gear 111 and the second moving gear ( 110) can allow relative motion to occur.
  • the method of allowing the first moving gear 111, the second moving gear 110, and the gear block 102 to move together in the axial direction while maintaining contact in a state in which fluid does not leak on each contact surface is this do not limit
  • the first moving gear 111 and the second moving gear 110 may be brought into close contact with the outside of the casing 121 through a clamp-type device.
  • FIG. 13 which will be described later, may be applied.
  • the gear block bolt 15 does not incline more than horizontally as shown in FIG. 1 , and can maintain parallel to the axial direction.
  • the gear block hole 104 of the gear block 102 may be greater than or equal to the gear block hole 4 of the gear block 2 disclosed in FIG. 1 .
  • FIG. 10 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 9 .
  • the shaft moving means or control device (not shown) for enabling this movement is a first moving gear shaft 113 , a second moving gear shaft 115 or a first moving gear 111 , a second moving gear ( 110) and can be used.
  • the inside of the second moving gear shaft 115 may include a spline gear 106 .
  • the shaft moving means or control device (not shown) is connected to the moving gear shafts 113 and 115 or the moving gears 111 and 110, and the moving gears 111 and 110 in the fixed gear 101, the moving gear Shafts 113 , 115 and gear block 102 can move together in the axial direction. Then, based on the gear block 102 , the meshing width of the left fixed gear 101 and the first moving gear 111 and the right side of the fixed gear 101 and the second moving gear 110 meshing with each other are can be changed. In addition, the width of both fluid moving chambers (not shown) is changed, the volumes of both fluid moving chambers are changed, and accordingly, the discharge amount per rotation discharged from the fluid inlets (not shown) at both ends of the casing 121 is changed. can be
  • the variable displacement gerotor pump can distribute the discharge amount per rotation differently as needed.
  • variable displacement gerotor pump is to remove the drive flange 5 from the variable capacity gerotor pump of FIG. 1 and install the moving gear 211 to the moving gear shaft 213 .
  • the variable displacement gerotor pump comprises a gear block 202, a gear block hole 204, a moving gear sleeve 215, 216, a gear block base plate 217, a nut 218, a gear ring cover ( 222 ), a casing cover 223 , and moving gear shaft support devices 231 and 232 .
  • variable displacement gerotor pump can prevent torsion between the fixed gear 1 and the moving gear 211 even when the pressure inside the pumping chambers 26 and 27 is high.
  • the variable displacement gerotor pump of FIG. 11 may be a modified example of a driving-related portion of the variable displacement gerotor pump of FIG. 1 .
  • the rotating shaft 213 for driving the moving gear 211 may have a structure that passes through the moving gear 211 .
  • the moving gear 211 may be driven through the moving gear shaft 213, but the present invention is not limited thereto, and the structure or method shown in FIG. 17 to be described later may be used. have.
  • the gear block 202 may be installed using a gear block support plate 217 and a nut 218 in the moving gear sleeve 216 at one end of the moving gear 211 . Fluid leakage between the moving gear 211 and the gear block 202 and the fluid leakage between the fixed gear 1 and the gear block 202 can be prevented. While the rotation of the gear block 202 is possible relative to the moving gear 211 , the moving gear 211 and the gear block 202 may move together in the axial direction inside the fixed gear 1 .
  • the diameter of the gear block hole 204 may be larger than the diameter of the moving gear sleeve 216 , and since the centers of the gear block 202 and the moving gear 211 do not coincide, the gear block 202 may move slightly in all directions.
  • a spline gear (not shown) is formed inside the moving gear 211 or the moving gear sleeves 215 and 216, and is installed in engagement with the moving gear shaft 213 in which the spline gear is formed, and the moving gear shaft 213 and They can rotate together and move axially.
  • the moving gear shaft 213 may be supported by the moving gear shaft supporting devices 231 and 232 .
  • the inside of the moving gear 211 or the moving gear sleeves 215 and 216 and the moving gear shaft 213 are not necessarily limited to those having a spline gear.
  • the inside of the moving gear 211 or the moving gear sleeves 215 and 216 and the moving gear shaft 213 may include, for example, a polygonal or star-shaped edged column or inner surface.
  • FIG. 12 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 11 .
  • the moving gear 211 may be engaged with the fixed gear 1 to move in the axial direction, and leakage of fluid may be prevented by the gear ring 12 and the gear block 202 .
  • the rotational force for rotating the fixed gear 1 and the moving gear 211 may be transmitted through the moving gear shaft 213 , but is not limited thereto.
  • a gear may be formed on the outer periphery of the fixed gear 1
  • a hole may be formed in the middle of the casing 21 to engage the external gear with the gear formed on the outer periphery of the fixed gear 1 .
  • a means or control device (not shown) for adjusting the discharge amount per rotation may contact the moving gear sleeves 215 and 216 to move the moving gear 211 in the axial direction.
  • the variable displacement gerotor pump shown in FIGS. 11 to 12 may have the same or similar pumping action as the variable displacement gerotor pump of FIG. 1 , and may variably adjust the discharge amount per rotation according to the same or similar principle.
  • FIG. 13 is an exploded perspective view of a variable displacement gerotor pump according to another embodiment of the present disclosure.
  • the configuration related to the driving of the moving gears 111 and 110 may be changed in the pump of FIG. 13 .
  • the moving gears 111 , 110 , the moving gear shafts 113 , 115 of the variable displacement gerotor pump of FIG. 9 , the gear block bolt 15 and the nut 16 have the variable displacement shown in FIG. 13 .
  • the shape or configuration may be changed to the moving gears 311 and 310 of the gerotor pump, the moving gear joint shaft 317 , the moving gear shaft 213 , the moving gear base plate 318 and the nut 218 .
  • the moving gear common shaft 317 may include moving gear common shaft sleeves 315 , 316 . Accordingly, various methods described with reference to FIG. 9 in relation to driving the pump of FIG. 13 may be applied.
  • the variable displacement gerotor pump includes a second moving gear 310 , a first moving gear 311 , a moving gear coaxial sleeve 315 , 316 , a first gear ring cover 222 , It may include a second gear ring cover 322 , a first moving gear shaft supporting device 231 , and a second moving gear shaft supporting device 332 .
  • the moving gear joint shaft 317 is not limited to the configuration shown in FIG. 13 , and various methods such as replacing and using the separated moving gear shaft 213 may be applied.
  • the variable displacement gerotor pump uses a moving gear 211 including a spline gear therein, and moving gear sleeves 215 and 216 formed at both ends.
  • This method can be used in the variable displacement gerotor pump of FIG. 13 .
  • a plurality of moving gears may be used.
  • Moving gear holes 314 and 313 may be included in the centers of the first moving gear 311 and the second moving gear 310 .
  • spline gears are formed inside the moving gear holes 314 and 313, the first pumping chambers 126 and 127, the second pumping chambers 226 and 227, and the plurality of fluid moving chambers 28 may not be changed. have. With this change, it is possible to rotate the moving gears 311 , 310 through the moving gear shaft 213 and move the moving gears 311 , 310 axially through the moving gear cavity shaft 317 .
  • the moving gear holes 314 and 313 of the moving gears 311 and 310 shown in FIG. 13, the spline gear formed inside or outside the moving gear cavity shaft 317 and the moving gear shaft 213 may be replaced by other means.
  • the structure may be configured in various shapes, such as polygonal or star-shaped columns.
  • FIG. 14 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 13 .
  • the moving gears 311 and 310 have a moving gear joint shaft 317 installed therethrough, so that the moving gears 311 and 310 move together with the moving gear common shaft 317 in the axial direction.
  • the shaft moving means or control device may be connected to the moving gear common shaft sleeves 315 and 316 to enable movement in the axial direction.
  • the gear block 202 When the shifting gears 311 , 310 and the gear block 202 are axially moved together by a shaft shifting means or control device connected to the shifting gear joint shaft sleeves 315 , 316 , the gear block 202 is , the left side of the fixed gear 101 and the first moving gear 311 and the fixed gear 101, the right side and the second moving gear 310 meshing width can be changed.
  • the sum of the interlocking widths and the sum of the discharge amount per rotation may be constant.
  • the width and volume of the plurality of fluid moving chambers (not shown) may be changed. Accordingly, the discharge amount per rotation discharged from the fluid inlet (not shown) of the casing may be changed.
  • the discharge amount per unit time when the rotation speed of the input rotation shaft is fixed, the discharge amount per unit time can be fixed, and when the torque of the input rotation shaft is fixed, the maximum discharge hydraulic pressure of the fluid is can be fixed.
  • the discharge amount per unit time when the rotation speed of the input rotation shaft is fixed, the discharge amount per unit time can be adjusted, and when the torque of the input rotation shaft is fixed, the maximum discharge hydraulic pressure of the fluid can be adjusted.
  • variable capacity gerotor pump when the speed of the input rotation shaft is fixed, the discharge amount per unit time may be adjusted. In addition, if the discharge amount per time is adjusted, the hydraulic pressure of the pumping chamber that discharges the fluid thereto can also be adjusted. Even when a variable-capacity gerotor pump is connected to a shaft whose rotational speed changes every moment, such as in an automobile engine, the hourly discharge rate can be adjusted to a constant level by adjusting the discharge rate per revolution. Accordingly, the hydraulic pressure of the discharge pumping chamber can also be adjusted to a constant level.
  • variable displacement gerotor pump In a variable displacement gerotor pump, too little discharge per hour or too low pressure in the discharge pumping chamber may be a problem, and too much discharge per hour or too high pressure in the discharge pumping chamber may be a problem. In addition, in the variable capacity gerotor pump, various problems may occur, such as the fluid may not be properly supplied to where it is needed, it may overload the machine, and energy may be wasted.
  • variable displacement gerotor pump may maintain the hydraulic pressure of the pumping chamber 326 for discharging the fluid and the discharge amount per time within a certain range regardless of the rotational speed of the driven shaft.
  • the variable displacement gerotor pump includes a fluid inlet 324 , 325 , a pumping chamber 326 , 327 , a spring 353 , a spring bearing 354 , a moving gear 411 , a gear ring 412 , and a moving gear It may include a shaft 413 , a bolt hole 414 , and a gear ring cover 422 .
  • the driving flange 5 is formed with a spline shaft passing through the driving flange 5 to not confine the fluid, but the driving flange 305 disclosed in FIG. 15 is blocked to confine the fluid.
  • the diameter of the portion where the driving flange 305 is in contact with the fixed gear 1 may be slightly smaller than the diameter of the fixed gear 1 , and the fluid flows around the driving flange 305 in contact with the fixed gear 1 . It may be to secure a space necessary to form the fluid corridor 364 that can be.
  • the fluid connection passage 330 in the drive flange 305 may be configured to allow fluid to flow in and out of the fixed gear 1 .
  • the configuration of the fluid corridor 364 can be easily confirmed with reference to FIG. 16 to be described later.
  • the driving flange 305 does not necessarily exist, and if the driving flange 305 is not used, one end of the casing 321 is It may be blocked.
  • a method of confining the fluid on the right side with respect to the gear block 2 in the interior of the fixed gear 1 may be used. Meanwhile, the method for installing the hydraulic chamber 365 is not limited thereto. For example, as shown in FIG. 16, a hydraulic chamber ( 365) can be used.
  • a fluid connection passage 329 may be formed from one pumping chamber 326 to the other end of the casing 321 .
  • the fluid connection passage 329 becomes a passage through which a passage from the pumping chamber 326 to the fluid passage 364 can flow.
  • the connected pumping chamber 326 may be a discharge pumping chamber for discharging the fluid
  • the fluid inlet 324 may be an outlet for discharging the fluid.
  • the fixed gear 1 and the moving gear 11 may rotate counterclockwise.
  • a method of passing fluid between the discharging pumping chamber 326 and the fluid passage 364 or the hydraulic chamber 365 is not limited to the fluid connection passage 329 .
  • it can be connected by attaching a hose to the outside.
  • the fluid discharged from the pump by pumping is recovered by the pump, it may be used by connecting the fluid corridor 364 to the end of the hose to be recovered. Due to the difference between the respective drive flanges 5 and 305, the space on the right side of the gear block 2 reference inside the fixed gear 1 shown in FIG. 1 is open. However, the space on the right side of the reference gear block 2 inside the fixed gear 1 of FIG. 15 is closed.
  • the right space may be surrounded by a fixed gear 1 , a gear block 2 and a driving flange 305 .
  • the passage through the fluid passage 364 is the fluid connection passage 330 , one hydraulic chamber 365 may be formed. Hydraulic pressures of the pumping chamber 326 , the fluid connection passages 329 and 330 , the fluid corridor 364 , and the hydraulic chamber 365 for discharging the fluid are always maintained together.
  • the fixed gear 1 may function as a cylinder, and the gear block 202 may function as a piston.
  • the gear block 202 may move in the axial direction according to the hydraulic pressure therein.
  • the gear block 202 When the fixed gear 1 and the moving gear 11 rotate to start pumping, the gear block 202 generates the restoring force of the spring 353 , the force acting in the hydraulic chamber 365 and the fluid movement chamber 28 . It may be located at a point where the applied forces are balanced.
  • the shape, installation location, installation method, and method of adjusting the restoring force of the illustrated spring 353 are not limited thereto. For example, various methods may be used, such as manually adjusting the restoring force or controlling using an actuator.
  • variable displacement gerotor pump is based on the gear block 2 inside the fixed gear 1 and the fluid corridor 364 formed around the fixed gear 1 and the driving flange 305 are in contact. It may include a hydraulic chamber 365 formed to the right.
  • a portion of the gear block 2 may be exposed little by little to a plurality of fluid moving chambers (not shown) on the left side of the gear block 2 based on the gear block 2 .
  • the right side with respect to the gear block 2 is completely exposed to the hydraulic chamber 365 , so the area on which the hydraulic pressure acts may be wider than the left side based on the gear block 2 . For this reason, the force acting on the right side of the gear block 2 may be greater than on the left side.
  • the cross-sections of the fluid moving chamber 28 are half of the entire fluid moving chamber 28 on the side of the pumping chamber where the fluid pressure of the discharged fluid acts. The area may be half of the cross-section of the entire fluid moving chamber 28 .
  • the cross section near the hydraulic chamber may be the entire area of the gear block 2 .
  • the intensity of the force acting on both sides of the gear block 2 may be increased in proportion to the intensity of the hydraulic pressure of the discharged fluid and the size of the area where the hydraulic pressure acts.
  • the difference in the force acting on both sides of the gear block 2 may become larger as the hydraulic pressure of the discharged fluid increases, and as the hydraulic pressure of the discharged fluid increases, the gear block 2 is formed by the gear ring 412 and the gear It can be pushed harder toward the ring cover 422 .
  • the gear block 2 may have a stronger tendency to move to the left with respect to the gear block 2 as the hydraulic pressure is higher. Due to this, when the sum of the force acting on the gear block 2 and the restoring force of the spring 353 of the hydraulic pressure in the fluid moving chamber is balanced with the force acting on the gear block 102 of the hydraulic pressure in the hydraulic chamber 365 , The gear block 2 can move to the left. As the gear block 2 moves to the left, the discharge amount per rotation may gradually decrease. When the gear block 2 moves all the way to the left, the discharge stops, and the hydraulic pressure in the discharge pumping chamber 326 may not increase. The hydraulic pressure of the discharge pumping chamber 326 is also related to the discharge of the fluid.
  • the hydraulic pressure in the discharge pumping chamber 326 When the fluid is well discharged even at a low hydraulic pressure, the hydraulic pressure in the discharge pumping chamber 326 may be maintained low. When the fluid is not well discharged even at a high hydraulic pressure, the hydraulic pressure in the discharge pumping chamber 326 may rise to the maximum possible hydraulic pressure. As the gear block 2 moves to the left, the discharge amount per rotation gradually decreases and the maximum discharge hydraulic pressure may increase. . When the discharge of the fluid is stopped, the fluid in the discharge pumping chamber 326 flows into the hydraulic chamber 365 through the fluid connection passages 329 and 330, and as the hydraulic pressure increases, the gear block 2 moves further to the left and per rotation The discharge amount may be reduced. As a result, the hydraulic pressure in the discharge pumping chamber 326 may not increase because the discharge is stopped.
  • the rotation speed of the driving flange 305 increases and the discharge amount per hour increases, and when the discharge oil pressure increases, the pressure in the pressure chamber 365 . also increases, and the gear block 2 moves to the left to find a new balance point.
  • the discharge amount per hour may be reduced again and the hydraulic pressure of the discharge pumping chamber 326 may be lowered.
  • the rotational speed of the driving flange 305 is lowered to reduce the discharge amount per time and the hydraulic pressure in the discharge pumping chamber 326 is lowered, the pressure in the pressure chamber 365 may also be lowered.
  • the gear block 2 moves to the right to find a new balance point, so that the discharge amount per hour increases again and the hydraulic pressure in the discharge pumping chamber 326 may increase. Due to this, the discharge amount per hour and the hydraulic pressure of the discharge pumping chamber 326 may react and be adjusted according to the position of the spring support 354 .
  • the fact that the discharge amount per hour increases and the hydraulic pressure of the discharge pumping chamber 326 increases does not refer to the characteristics of the variable displacement pump. It can be said that this increases.
  • variable capacity gerotor pump shown in FIGS. 15 to 16 can maintain the hydraulic pressure of the discharge pumping chamber and the discharge amount per time within a certain range by adjusting the restoring force of the spring 353 .
  • variable displacement gerotor pump can maintain the hydraulic pressure and the time-per-hour discharge amount of the discharge pumping chamber 326 within a certain range regardless of the rotational speed of the driven shaft.
  • the variable displacement gerotor pump comprises a fixed gear 1 , a moving gear 311 , a gear ring 12 , a gear block 202 , a moving gear base plate 318 , a nut 218 , and a gear ring. It may include a cover 222 and a moving gear shaft support device 432 .
  • the variable displacement gerotor pump may include a casing 321 and a casing cover 423 , and the casing 321 and the casing cover 423 may be variations of the configuration shown in FIGS. 11 to 12 . .
  • a discharge pumping chamber 326 is positioned at one end of the casing 321 , and a fluid connection passage 329 may be formed from one end of the casing 321 to the other end.
  • the fixed gear 1 and the moving gear 311 must be rotated counterclockwise due to the discharge pumping chamber 326 and the fluid connection passage 329 .
  • the casing cover 423 may be blocked so as to confine the fluid except for the moving gear shaft support device 432 and the fluid connection passage 430 through which the moving gear shaft 213 passes.
  • the hydraulic chamber 366 is surrounded by the fixed gear 1 and the gear block 202, and the moving gear 311 is not located in the gear block 202 based on the right space.
  • the fluid connection passage 430 is connected to the fluid connection passage 329 inside the casing 321 so that a fluid can flow.
  • a method of allowing fluid to pass between the discharge pumping chamber 326 and the hydraulic chamber 366 is not limited to using the fluid connection passages 329 and 430 .
  • the method disclosed in FIG. 13 may be used as the changed method related to the driving of the moving gear 311 .
  • the moving gear 211 and the moving gear shaft 213 in the manner disclosed in FIG. 11 may be used, or one moving gear sleeve 215 may be removed from the moving gear 211 and used.
  • these methods may be one of examples related to the driving of the moving gear 311 .
  • the moving gear 311 makes a moving gear hole 314 having a spline gear formed therein, and a moving gear joint shaft 317 and a moving gear shaft with moving gear joint shaft sleeves 315 and 316 at both ends. 213) can be used. Due to this, it is possible to rotate the moving gear 311 through the moving gear shaft 213 and move the moving gear 311 in the axial direction through the moving gear joint shaft 317 .
  • FIG. 18 is a cross-sectional view of an assembled state of the variable displacement gerotor pump of FIG. 17;
  • the hydraulic chamber 366 of the variable displacement gerotor pump may be surrounded by the fixed gear 1 , the gear block 202 and the casing cover 423 . Hydraulic pressures of the pumping chamber 326 , the fluid connection passages 329 and 430 , and the hydraulic pressure chamber 366 for discharging the fluid of the variable capacity gerotor pump may always be maintained together.
  • the configuration and effect of the gear block 202, the principle of operation, etc. may be the same as those disclosed in FIGS. 15 and 16 .
  • variable capacity gerotor pump shown in FIGS. 17 to 18 can maintain the hydraulic pressure of the discharge pumping chamber and the discharge amount per hour within a certain range by adjusting the restoring force of the spring 353 .
  • variable capacity gerotor pump is used to maintain a constant flow of fluid or to maintain a constant hydraulic pressure in an environment in which the rotational speed of a shaft changes frequently, such as an oil pump of a vehicle or an air conditioner pump. can be used for
  • the variable displacement gerotor pump can be used as a pump in a place where there is a large change in flow rate.
  • the variable displacement gerotor pump is a stepless power distribution device and can be used in a caterpillar vehicle where it is necessary to change direction by different speeds during rotation of the left and right wheels.
  • the variable capacity gerotor pump can actively realize the left-right differential according to the direction change of the vehicle when the driving wheels on both left and right sides are connected to each hydraulic motor in a typical automobile.
  • variable displacement girotor pumps can be used in hydraulic devices to easily implement changes in flow rate and hydraulic pressure
  • variable displacement girotor motors having the same or similar configuration can easily implement changes in torque, and use a continuously variable speed device. It can also be used to implement

Abstract

La présente invention concerne une pompe à rotor denté à capacité variable. La pompe à rotor denté à capacité variable comprend : un carter ayant une forme cylindrique et comprenant au moins une chambre de pompage ayant au moins une entrée/sortie de fluide formée à travers une extrémité de celui-ci ; un engrenage fixe configuré sous la forme d'un engrenage interne inséré dans le carter de façon à tourner dans une position fixe sans fuite de fluide, l'engrenage fixe ayant une forme cylindrique dans laquelle de multiples dents sont formées, et l'engrenage fixe comprenant au moins un trou de fluide à travers une extrémité de la forme cylindrique, de telle sorte qu'un fluide peut se déplacer à partir de la chambre de pompage ou jusqu'à la chambre de pompage ; au moins un engrenage mobile installé dans l'engrenage fixe de manière à s'engrener avec l'engrenage fixe sans fuite de fluide, l'engrenage mobile comprenant des dents, dont le nombre est inférieur de un au nombre des multiples dents de l'engrenage fixe, et l'engrenage mobile étant apte à se déplacer axialement ; un bloc d'engrenage disposé dans l'engrenage fixe sans fuite de fluide de façon à pouvoir se déplacer axialement ; une couronne dentée disposée à l'extérieur de l'engrenage mobile de façon à pouvoir se déplacer axialement par rapport à l'engrenage mobile sans fuite de fluide ; et un capot de couronne dentée installé sur une extrémité du carter, le capot de couronne dentée ayant un trou dans lequel la couronne dentée tourne sans fuite de fluide.
PCT/KR2021/003497 2020-03-24 2021-03-22 Pompe à rotor denté à capacité variable WO2021194187A1 (fr)

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KR20200035317 2020-03-24
KR10-2020-0035317 2020-03-24
KR20200036223 2020-03-25
KR10-2020-0036223 2020-03-25
KR10-2020-0043812 2020-04-10
KR20200043812 2020-04-10
KR10-2020-0053619 2020-05-06
KR20200053619 2020-05-06
KR10-2020-0169039 2020-12-05
KR1020200169039A KR102370387B1 (ko) 2020-04-10 2020-12-05 가변 용량 지로터 펌프

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US11280330B2 (en) * 2019-08-16 2022-03-22 Lih Yann Industrial Co., Ltd. Pumping device
IT202000019525A1 (it) * 2020-08-06 2022-02-06 Waterjet Corp S R L Pompa ad ultra alta pressione

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KR20000059664A (ko) * 1999-03-06 2000-10-05 배상석 가변용량 유압펌프와 그것을 이용한 가변 유압모터, 무단변속기및 차량용 무단 자동변속기
US20010024618A1 (en) * 1999-12-01 2001-09-27 Winmill Len F. Adjustable-displacement gear pump
KR20070091150A (ko) * 2004-12-22 2007-09-07 마그나 파워트레인 인크. 가변 커패시티 제로터 펌프
KR20170020197A (ko) * 2015-08-12 2017-02-22 장순길 가변 용량 펌프

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KR19990011813A (ko) * 1997-07-25 1999-02-18 구자홍 기어펌프 구조
KR20000059664A (ko) * 1999-03-06 2000-10-05 배상석 가변용량 유압펌프와 그것을 이용한 가변 유압모터, 무단변속기및 차량용 무단 자동변속기
US20010024618A1 (en) * 1999-12-01 2001-09-27 Winmill Len F. Adjustable-displacement gear pump
KR20070091150A (ko) * 2004-12-22 2007-09-07 마그나 파워트레인 인크. 가변 커패시티 제로터 펌프
KR20170020197A (ko) * 2015-08-12 2017-02-22 장순길 가변 용량 펌프

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