CN114382917A

CN114382917A - Valve device

Info

Publication number: CN114382917A
Application number: CN202011131449.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2022-04-22

Abstract

The invention discloses a valve device, which comprises a valve body, a valve seat, a rotor component and an adjusting component, wherein the rotor component and the adjusting component are arranged in the valve body; an inlet pipe and an outlet pipe are connected to the outside of the valve seat, a sealing surface matched with the adjusting part is arranged inside the valve seat, and a valve port is arranged on the sealing surface; the rotor component is in transmission connection with the adjusting component so as to drive the adjusting component to rotate; the adjusting component controls the conduction state of the valve port and the inlet pipe by rotating to different working positions on the sealing surface, the valve seat comprises at least two layers of flat plates which are mutually stacked and welded, and the flat plates on each layer are stamping parts. The valve device is simple in manufacturing process and high in production efficiency.

Description

Valve device

Technical Field

The invention relates to the technical field of control valves, in particular to an electric control valve.

Background

In a conventional refrigeration system, such as a refrigerator refrigeration system, the control component of the refrigerant flow direction is mostly a two-position three-way solenoid valve or a bistable solenoid valve. The two valve driving signals are alternating current signals, so that the interference is large, the power consumption is large, and the interference signals generated by the alternating current of the power grid can cause the valves to generate misoperation.

In contrast, the refrigerator refrigeration systems increasingly use electric switching valves, the control valves drive the rotor part to rotate by using a coil by utilizing the principle of a stepping motor, so that the slide block is driven to rotate, the on-off relation between the guide inlet and the guide outlets is controlled, the control is reliable, the energy consumption is low, and one electric valve can realize multiple working modes and effectively simplify the system.

The valve seat of the electric valve generally comprises a first plate member and a second plate member, wherein the first plate member is a stamping part, the second plate member is a turning part, and the second plate member is the turning part, so that the problems of complex process, low efficiency and high cost exist.

Disclosure of Invention

The invention aims to provide a valve device with low cost and high processing efficiency.

In order to achieve the above object, the present invention provides a valve device, which includes a valve body, a valve seat, and a rotor component and an adjusting component arranged in the valve body; an inlet pipe and an outlet pipe are connected to the outside of the valve seat, a sealing surface matched with the adjusting part is arranged inside the valve seat, and a valve port is arranged on the sealing surface; the rotor component is in transmission connection with the adjusting component so as to drive the adjusting component to rotate; the regulating component controls the conduction state of the valve port and the inlet pipe by rotating to different working positions on the sealing surface, the valve seat comprises at least two layers of flat plates which are mutually stacked and welded, and each layer of flat plate is a stamping part

The valve seat of the valve device provided by the invention is formed by welding and connecting at least two layers of flat plates which are mutually laminated, after improvement, main components of the valve seat are stamping parts, each layer of flat plate can be processed by adopting a stamping process and then assembled into the whole valve seat, and as no lathing part exists, the component components of the valve seat can be prevented from being manufactured by adopting a lathing process.

Drawings

FIG. 1 is a cross-sectional view of a valve assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of the connection of the valve seat and the nipple of the valve device shown in FIG. 1;

FIG. 3 is a longitudinal cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of FIG. 2 from a top view;

FIG. 5 is a schematic view of the second plate shown in FIG. 4, as viewed from above;

FIG. 6 is a schematic view of the second plate shown in FIG. 4, viewed from below;

FIG. 7 is a schematic structural view of the first plate shown in FIG. 4;

FIG. 8 is a schematic view of the third plate shown in FIG. 4, as viewed from above;

FIG. 9 is a schematic view of the third plate shown in FIG. 4, viewed from below;

FIG. 10 is a schematic view of the connection of a valve seat and a nipple of another valve device disclosed in the embodiment of the present invention;

FIG. 11 is a schematic view of the valve seat and the nipple of FIG. 10 from another perspective;

FIG. 12 is a schematic view of the second plate shown in FIG. 10;

FIG. 13 is a schematic structural view of the first plate shown in FIG. 10;

FIG. 14 is a schematic structural view of the third plate shown in FIG. 10;

FIG. 15 is a schematic view of a bottom surface of a gear with a sealing engagement surface and a notch;

FIG. 16 is a schematic structural view of the upper portion of the gear having a first stop protrusion;

FIG. 17 is a schematic view of the inner top surface of the liner plate having a second stop protrusion.

In the figure:

11. the valve seat 112, the first

flat plates

112a, 112b, the valve port 112c, the first shaft hole 112d, the recess 114a, the first outlet pipe 114b, the second outlet pipe 115, the inlet pipe 111, the second

flat plates

111a, 111b, the flow hole 111c, the third shaft hole 111d, the boss 111e, the second shaft hole 111f, the inlet pipe connection hole 111g, the recess 113, the third

flat plates

113a, 113b, the outlet pipe connection hole 113c, the boss 113d, the recess 12, the rotor member 121, the magnet 122, the driver 13, the gear shaft 14, the center shaft 15, the gear 15a, the seal engagement surface 15b, the gap 15c, the first stopper boss 16, the lining plate 16a, the second stopper boss 16b, the small shaft hole 16c, the through hole 16d, the skirt portion 17, the spring 18, the cover member 181, the upper case 182, the lower case 19, the shaft sleeve housing 19, and the skirt portion 16

Detailed Description

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In this document, terms such as "upper, lower, left, right" and the like are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, they are not to be construed as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

Referring to fig. 1, 2 and 3, fig. 1 is a sectional view of a valve device according to an embodiment of the present invention; FIG. 2 is a schematic view of the connection of the valve seat and the nipple of the valve device shown in FIG. 1; fig. 3 is a longitudinal sectional view of fig. 2.

As shown in the drawings, the electric switching valve provided in this embodiment is mainly applied to refrigerators and similar refrigeration systems, an upper housing 181 and a lower housing 182 are connected to form a cover member 18, a valve seat 11 is located at an opening at the bottom of the cover member 18, the two are connected by welding to form a closed cavity, a rotor member 12 is disposed in the cavity, wherein the rotor member 12 is composed of a magnet 121 and a driving wheel 122, and a gear shaft 13 and a central shaft 14 are press-fitted on the valve seat 11 for mounting and fixing the gear 15 and the rotor member 12.

An inlet pipe 115 and two outlet pipes are connected to the outside of the valve seat 11, which are a first outlet pipe 114a and a second outlet pipe 114b, respectively, a sealing surface matched with the gear 15 is arranged inside the valve seat 11,

valve ports

112a and 112b communicated with the first outlet pipe 114a and the second outlet pipe 114b are arranged on the sealing surface of the valve seat 11, respectively, the rotor component 12 is in meshing transmission with the gear 15 through a driving wheel 122, when the valve body works, a coil outside the valve body drives the rotor component 12 to rotate, the driving wheel 122 at the lower end of the rotor component 12 drives the gear 15 installed on the gear shaft 13 to rotate, and the gear 15 controls the conduction states of the

valve ports

112a and 112b and the inlet pipe 115 by rotating to different working positions on the sealing surface of the valve seat 11, thereby realizing different flow channel switching and on-off control functions.

In order to avoid the excessive vertical movement of the rotor part 12, a sleeve 19 is provided on the top of the central shaft 14, and the vertical movement of the rotor part 12 can be limited by controlling the distance between the bottom surface of the sleeve 19 and the top surface of the magnet 121.

If the speed reduction is needed, the driving wheel 122 of the rotor component 12 can also be in meshed transmission with the gear 15 through a multi-stage gear, and after the transmission of the multi-stage gear, the purposes of speed reduction, torque improvement and the like can be achieved.

Please refer to fig. 4, 5, 6, 7, 8, and 9, fig. 4 is a schematic view of fig. 2 close to the top view; FIG. 5 is a schematic view of the second plate shown in FIG. 4, as viewed from above; FIG. 6 is a schematic view of the second plate shown in FIG. 4, viewed from below; FIG. 7 is a schematic structural view of the first plate shown in FIG. 4; FIG. 8 is a schematic view of the third plate shown in FIG. 4, as viewed from above; fig. 9 is a schematic structural view of the third plate shown in fig. 4, as viewed from below.

As shown in the figure, the main body of the valve seat 11 is formed by welding and connecting three stacked flat plates, and each flat plate is a stamping part.

Specifically, the three flat plates are a first flat plate 112, a second flat plate 111, and a third flat plate 113 in this order from top to bottom. By flat plate is meant a plate suitable for stamping and which may have various locations and shapes, generally in the shape of a flat plate.

The upper surface of the first plate 112 is a sealing surface, and in order to ensure the sealing performance, the sealing surface of the first plate 112 can be ground, and the

valve ports

112a and 112b are arranged on the sealing surface of the first plate 112; the second plate 111 is provided with two

circulation holes

111a, 111b, the

circulation holes

111a, 111b are respectively oblong holes (or kidney-shaped holes), and the two are distributed in an angle shape and are generally in a shape of 'eight', wherein the circulation hole 111a corresponds to the valve port 112a, the circulation hole 111b corresponds to the valve port 112b, the second plate 111 is further provided with an inlet pipe connection hole 111f, and the inlet pipe 115 is welded to the inlet pipe connection hole 111f of the second plate 111; the third plate 113 is provided with outlet

pipe connection holes

113a, 113b communicating with the

flow holes

111a, 111b of the second plate 111, and the first outlet pipe 114a is welded in the outlet pipe connection hole 113a and the second outlet pipe 114b is welded in the outlet pipe connection hole 113b.

In order to mount the central shaft 14 of the rotor member 12 and the gear shaft 13 of the gear 15, corresponding shaft holes are also formed in the first plate 112 and the second plate 111.

The first plate 112 is provided with a first shaft hole 112c for mounting the lower end of the gear shaft 13, the second plate 111 is provided with a second shaft hole 111e for mounting the lower end of the center shaft 14, and a third shaft hole 111c corresponding to the first shaft hole 112c, and the lower end of the gear shaft 13 of the gear 15 is fitted into the third shaft hole 111c through the first shaft hole 112c.

If the first plate 112 has a large thickness and the first shaft hole 112c has a sufficient depth to mount the gear shaft 13, the second plate 111 may not be provided with the third shaft hole 111c, or the third shaft hole 111c of the second plate 111 may be designed as a counterbore instead of a through hole, and similarly, the second shaft hole 111e of the second plate 111 for mounting the central shaft 14 may also be designed as a counterbore.

The first plate 112 and the second plate 111 are circular, the diameter of the first plate 112 is smaller than the radius of the second plate 111, and when the two plates are stacked, the first plate 112 is located on one side of the central axis 14 of the rotor component 12, and the center of the first plate 112 is located at an eccentric position of the second plate 111.

The third plate 113 is substantially in the shape of a rounded isosceles triangle, and has a shape that covers the

flow holes

111a and 111b, the second shaft hole 111e, and the third shaft hole 111c of the second plate 111 from below, the outlet pipe connecting portion where the outlet

pipe connecting holes

113a and 113b are provided is close to the outer edge of the second plate 111, the shaft hole shielding portion extends toward the center of the second plate 111, and the width gradually decreases from the outer edge toward the center of the center, the third plate 113 is used to weld the first outlet pipe 114a and the second outlet pipe 114b, and to make the

outlet pipes

114a and 114b penetrate through the

flow holes

111a and 111b, and on the other hand, the shaft hole of the first plate 111 can be blocked from below, so that the lower end of the central shaft 114 of the rotor part 12 and the lower end of the gear shaft 13 of the gear 15 can be supported by the shaft hole shielding portion of the third plate 113.

It will be appreciated that the third plate 113 may be designed into other shapes according to the number of outlet pipes, the number of shaft holes and the relative positions of the outlet pipes and the shaft holes, and is not limited to the isosceles triangle shape shown in the figures, for example, the outlet pipe connecting portion and the shaft hole blocking portion of the third plate 113 may be separated into two independent parts, and, as mentioned above, if the shaft hole of the first plate 111 is a counter bore and is not exposed outwards, the shaft hole blocking portion of the third plate 113 may be omitted, and only the outlet pipe connecting portion is remained, in which case the shape will be changed accordingly.

The upper surface of the second flat plate 111 is provided with a boss 111d, the back of the boss 111d is a groove 111g with a similar shape, a rectangular notch on the edge part of the first flat plate 112 forms a groove 112d, the width of the groove 112d is approximately equal to the length of the boss 111d, and the groove and the boss are embedded and matched to play a positioning role, so that a first positioning structure for positioning the first flat plate 112 and the second flat plate 111 is formed; similarly, the upper surface of the third flat plate 113 is provided with a boss 113c, the back of the boss 113c is a groove 113d with a similar shape left by stamping, and the boss 113c is nested and matched with the groove 111g on the bottom surface of the second flat plate 111 to play a positioning role, so as to form a second positioning structure for positioning the second flat plate 111 and the third flat plate 113.

The groove 112d, the boss 111d, the groove 111g, the boss 113c, and the groove 113d are all formed by stamping, are located between the central shaft 14 of the rotor component 12 and the gear shaft 13 of the gear 15 in the radial direction, and correspond up and down in the axial direction, wherein the boss 111d and the groove 111g are front and back surfaces of the same stamping part, and similarly, the boss 113c and the groove 113d are front and back surfaces of the same stamping part.

In order to prevent the first, second and

third plates

112, 111 and 113 from rotating relatively, the groove 112d is rectangular, and the boss 111d, the groove 111g, the boss 113c and the groove 113d are all non-circular, and the shape designed in this embodiment is an oval, and it is understood that the groove 112d on the first plate 112 may also be an oval groove similar to the groove 111g.

The first flat plate 112, the second flat plate 111 and the third flat plate 113 of the valve seat 11 are connected in a welding mode, before welding, the second flat plate 111 is respectively limited and fixed with the first flat plate 112 and the third flat plate 113 in a press-fitting mode, and then is welded with the connecting pipe. In order to reduce the cost and ensure the performance of the connecting pipe, preferably, the three flat plates are firstly brazed after being pressed and then are subjected to low-temperature high-silver welding with the connecting pipe.

It should be noted here that the first plate 112, the second plate 111, and the third plate 113 may be positioned by a concave fitting manner. For example, the positions of the projections and the grooves on the first plate 112, the second plate 111, and the third plate 113 may be interchanged, that is, the projections may be designed on the lower surface of the first plate 112 to be matched and positioned with the grooves on the upper surface of the second plate 111, and the projections may be designed on the lower surface of the second plate 111 to be matched and positioned with the grooves on the upper surface of the third plate 113, so as to achieve the purpose of positioning three layers of plates.

Referring to fig. 10, fig. 11, fig. 12, fig. 13 and fig. 14, fig. 10 is a schematic view illustrating a connection between a valve seat and a connection pipe of another valve device according to an embodiment of the present invention; FIG. 11 is a schematic view of the valve seat and the nipple of FIG. 10 from another perspective; FIG. 12 is a schematic view of the second plate shown in FIG. 10; FIG. 13 is a schematic structural view of the first plate shown in FIG. 10; fig. 14 is a schematic structural view of the third plate shown in fig. 10.

As shown in the drawing, in another embodiment, the main structure of the electric switching valve is substantially the same as that of the above embodiment, except that the first flat plate 112 is in a regular circular shape, and no notch is formed at the outer edge to form a groove, and during assembly, the first flat plate 112 and the second flat plate 111 are limited in a manner of tool-matched laser spot welding or extrusion-fixed positioning, and meanwhile, the second flat plate 111 and the third flat plate 113 also omit a positioning boss and a groove, and during assembly, the second flat plate 111 and the third flat plate 113 are limited in a manner of tool-matched laser spot welding or extrusion-fixed positioning, and after being fixed, the first flat plate 112, the second flat plate 111 and the third flat plate 113 are welded with the connecting pipe.

Referring to fig. 15, 16 and 17, fig. 15 is a schematic structural view of a bottom surface of a gear having a sealing mating surface and a notch; FIG. 16 is a schematic structural view of the upper portion of the gear having a first stop protrusion; FIG. 17 is a schematic view of the inner top surface of the liner plate having a second stop protrusion.

As shown in the drawings, in the above embodiment, as the rotatable adjustment member, the gear 15 is injection-molded by high-strength engineering plastic, and the bottom of the gear is provided with a seal mating surface 15a and a notch 15b which are mated with the sealing surface of the first plate 112 of the valve seat 11, and the seal mating surface 15a is formed by cutting off a portion where the notch 15b is located from a complete annular mating surface, wherein the central angle of the seal mating surface 15a is about 225 °, and the central angle of the notch 15b is about 135 °.

When the sealing matching surface 15a rotates to the position above the valve port, the corresponding valve port can be blocked, so that the blocked valve port is not communicated with the inlet pipe 115, when the notch 15b rotates to the position above the valve port, the corresponding valve port can be released, so that the valve port is communicated with the inlet pipe 115, the control gear 15 rotates to different positions, one of the

valve ports

112a and 112b can be selectively communicated with the inlet pipe 115, the

valve ports

112a and 112b can be simultaneously communicated with the inlet pipe 115, and the

valve ports

112a and 112b can be simultaneously blocked from being communicated with the inlet pipe 115, namely when the gear 15 rotates, the sealing matching surface 15a and the notch 15b are matched with the

valve ports

112a and 112b on the first flat plate 112, so that the on-off state or the flow rate of the valve can be controlled.

A lining plate 16 positioned above the valve seat 11 is arranged in the lower shell 182 of the valve body, a first stop boss 15c is arranged at the upper part of the gear 15, the upper part of the gear 15 is concave, and the first stop boss 15c is integrally formed on the side wall of the concave cavity of the gear 15; the lining plate 16 is in the shape of a cover with a downward opening, and has a top portion and a skirt portion 16d, the top portion is supported on the valve seat 11 through the skirt portion 16d, the top portion is provided with a through hole 16c at a middle position to pass through the driving wheel 122 of the rotor portion 12, one side of the through hole 16c is provided with a small shaft hole 16b to mount the upper end of the gear shaft 13 of the gear 15, the outer side of the small shaft hole 16b is provided with a second stop boss 16a, and the second stop boss 16a is integrally formed on the inner top surface of the lining plate 16 and is close to the edge portion of the lining plate.

The first stop boss 15c and the second stop boss 16a are respectively in a trapezoidal shape with the outer side width larger than the inner side width on the axial projection, the trapezoidal shape is similar to a single tooth part of an internal gear, two sides of the trapezoidal shape abut against a first stop surface and a second stop surface when the trapezoidal shape is stopped, after the trapezoidal shape is assembled, the second stop boss 16a enters the concave cavity of the gear 15, and when the gear 15 rotates, the first stop boss 15c can abut against the second stop boss 16a at the initial position and the limit position of the rotation, so that a stop mechanism is formed.

The skirt edge part 16d of the lining plate 16 is provided with a notch at the part corresponding to the gear 15 so as to provide enough rotating space for the gear 15 and avoid interference with the tooth part of the gear 15, a spring 17 for providing pretightening force is arranged between the gear 15 and the lining plate 16, and the spring 17 tightly clings the sealing matching surface 15a of the gear 15 to the sealing surface of the valve seat 11 so as to ensure that the internal leakage of the valve body is processed within a reasonable range.

The inlet pipe 115, the inner cavity of the valve body, the

valve ports

112a, 112b, the

flow holes

111a, 111b, and the

outlet pipes

114a, 114b form a complete flow channel, and the relative positions of the sealing surface 15a and the notch 15b and the

valve ports

112a, 112b are adjusted by rotating the control gear 15, so that the switching and on-off control of the system flow channel are realized.

The gear 15 of integrated structure not only possesses the driven function, and the bottom surface is provided with sealed fitting surface 15a and breach 15b moreover, can realize the function that the motorised valve runner switches and on-off control, and the upper portion of integrated gear 15 still is provided with first locking boss 15c, plays the effect of locking and definite initial position, and this locking portion separates with the external tooth of gear 15, is different from the conventional even tooth locking mode (the gear striking when even tooth locking mode locking, influences the gear life), and the locking is more reliable, and the life-span is longer, has reduced spare part quantity simultaneously, simplifies the process flow.

As a possible modification, if the sealing surface of the valve seat 11 and the

valve ports

112a, 112b are formed directly on the second flat plate 111, the first flat plate 112 may be omitted, leaving only the second and third

flat plates

111, 113.

As another possible modification, if the axial bore of the second plate 111 is countersunk and the

outlet pipes

114a, 114b are welded directly to the second plate 111, the third plate 113 may be omitted, leaving only the first plate 112 and the second plate 111.

The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, various embodiments can be obtained by performing targeted adjustment according to actual needs. For example, the scheme is used for the one-inlet two-outlet electric valve, if the number of the valve ports and the number of the connecting pipes are changed into one, three or four at the same time, the functions of one inlet one outlet, one inlet three outlet and one inlet four outlet can be realized; alternatively, the pinion shaft 13 and the center shaft 14 may be welded directly to the valve seat 11, or the like. This is not illustrated here, since many implementations are possible.

The valve seat main body is formed by welding three stamping parts, wherein the first flat plate 112 is a sealing flat plate, is provided with a valve port, and is provided with a through shaft hole in the center for press-fitting or welding the gear shaft 13; the second plate 111 is a middle large plate, the center of which is provided with a through hole for press-fitting or welding the central shaft 14, and a circulation hole is arranged at a position corresponding to the valve port to form a flow channel; the third flat plate 113 is a nozzle welding flat plate, and a nozzle welding hole is formed at a position corresponding to the flow hole to weld the nozzle to form a flow channel. Because the turning processing part does not exist, the component members of the valve seat can be prevented from being manufactured by adopting the turning processing technology, and compared with the turning processing technology, the stamping technology is simpler and more efficient, so that the manufacturing procedure of the valve device can be effectively simplified, and the production efficiency of the valve device is improved.

The valve device provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A valve device comprises a valve body, a valve seat, a rotor component and an adjusting component, wherein the rotor component and the adjusting component are arranged in the valve body; an inlet pipe and an outlet pipe are connected to the outside of the valve seat, a sealing surface matched with the adjusting part is arranged inside the valve seat, and a valve port is arranged on the sealing surface; the rotor component is in transmission connection with the adjusting component so as to drive the adjusting component to rotate; the adjusting component controls the conduction state of the valve port and the inlet pipe by rotating to different working positions on the sealing surface, and is characterized in that the valve seat comprises at least two layers of flat plates which are mutually stacked and welded, and each layer of the flat plates are stamping parts.

2. The valve device according to claim 1, wherein the valve seat comprises a first flat plate, a second flat plate and a third flat plate which are stacked and welded in sequence from top to bottom; the sealing surface is arranged on the upper surface of the first flat plate, and the valve port is arranged on the sealing surface of the first flat plate; the second flat plate is provided with a circulation hole and an inlet pipe connecting hole corresponding to the valve port, and the inlet pipe is arranged in the inlet pipe connecting hole of the second flat plate; the third flat plate is provided with an outlet pipe connecting hole communicated with the corresponding flow hole on the second flat plate, and the outlet pipe is arranged in the outlet pipe connecting hole of the third flat plate.

3. The valve apparatus according to claim 2, wherein said regulating member is provided with a rotary shaft, and said first plate is provided with a first shaft hole for mounting a lower end of said rotary shaft; the rotor part is provided with a central shaft, and the second flat plate is provided with a second shaft hole for mounting the lower end of the central shaft and a third shaft hole corresponding to the first shaft hole; and the lower end of the rotating shaft of the adjusting part is arranged in the first shaft hole and the third shaft hole.

4. The valve assembly of claim 3, wherein the first shaft bore is a through bore and the second and third shaft bores are counter bores or through bores.

5. The valve apparatus of claim 2, wherein the first and second plates are circular, the first plate having a diameter smaller than a radius of the second plate; the first plate is located on one side of the central axis of the rotor component, and the center of the first plate is located at the eccentric position of the second plate.

6. The valve arrangement according to claim 3, wherein the third plate comprises an outlet tube connecting portion and a shaft hole blocking portion; the outlet pipe connecting hole is arranged on the outlet pipe connecting part of the third flat plate, and the lower end of the central shaft of the rotor part and the lower end of the rotating shaft of the adjusting part are supported on the shaft hole shielding part of the third flat plate.

7. The valve device according to claim 6, wherein the third plate is shaped to cover the flow hole, the second shaft hole and the third shaft hole of the second plate, the outlet pipe connecting portion is close to the outer edge of the second plate, the shaft hole blocking portion extends toward the center of the second plate, and the width gradually decreases from the outer edge toward the center of the second plate.

8. The valve assembly of claim 2, wherein a first locating structure is disposed between the first plate and the second plate for locating the first plate and the second plate, and a second locating structure is disposed between the second plate and the third plate for locating the second plate and the third plate.

9. The valve assembly of claim 8, wherein the first positioning structure comprises a first groove formed in the first plate and a first boss formed in the second plate, and the first plate and the second plate are positioned by the first groove and the first boss being engaged; the second positioning structure comprises a second groove arranged on the second flat plate and a second boss arranged on the third flat plate, and the second flat plate and the third flat plate are positioned through the matching of the second groove and the second boss;

or the first positioning structure comprises a first boss arranged on the first flat plate and a first groove arranged on the second flat plate, and the first flat plate and the second flat plate are positioned by matching the first boss with the first groove; the second positioning structure comprises a second boss arranged on the second flat plate and a second groove arranged on the third flat plate, and the second flat plate and the third flat plate are positioned through the matching of the second boss and the second groove.

10. The valve device according to claim 9, wherein the first boss, the first groove, the second boss, and the second groove are stamped and formed to correspond in the axial direction; the first boss and the second groove of the second flat plate are the convex part and the concave part of the same stamping part, or the first groove and the second boss of the second flat plate are the concave part and the convex part of the same stamping part.

11. The valve arrangement of claim 10, wherein the first land, first groove, second land, and second groove are non-circular in shape.

12. The valve device of claim 11, wherein the first groove is formed in the first plate, and the first groove is formed by a notch at an edge of the first plate.

13. The valve arrangement of claim 12, wherein the first boss and the second recess on the second plate and the second boss on the third plate are each oblong.

14. A valve arrangement according to claim 10, wherein the first boss, the first recess, the second boss, the second recess are located radially between the central axis of the rotor member and the axis of rotation of the adjustment member.

15. The valve assembly of claim 2 wherein the flow holes of the second plate are oblong holes or kidney-shaped holes.

16. The valve assembly of claim 2, wherein the first, second and third flat plates are first brazed and then high silver brazed to the inlet and outlet tubes.

17. A valve arrangement according to claim 1, characterized in that the number of outlet ducts is one, two, three or four, and the number of valve ports corresponding thereto is one, two, three or four.

18. A valve device according to any one of claims 1 to 17, wherein said adjustment member comprises a gear mounted on said valve seat by a rotary shaft; and the bottom of the gear is provided with a sealing matching surface and a notch which are matched with the sealing surface of the valve seat.

19. The valve device as claimed in claim 18, wherein a lining plate is provided in the valve body above the valve seat, a first stop boss is provided on an upper portion of the gear, a second stop boss is provided on the lining plate to be engaged with the first stop boss, and the first stop boss and the second stop boss form a stop mechanism.

20. The valve assembly of claim 19 wherein the upper portion of the gear is concave and the first stop boss is integrally formed on a side wall of the concave cavity of the gear; the lining plate is in a cover body shape with a downward opening, and the second stop boss is integrally formed on the inner top surface of the lining plate and close to the edge of the lining plate.

21. The valve device as claimed in claim 20, wherein the first and second stop bosses have a trapezoidal shape having an outer width greater than an inner width in an axial projection, and have first and second stop surfaces abutting against each other at both sides thereof when stopped.

22. The valve assembly of claim 21 wherein a spring is provided between the gear and the backing plate to provide a preload force, the spring urging the sealing engagement surface of the gear against the sealing surface of the valve seat.