CN110005854A

CN110005854A - Valve gear

Info

Publication number: CN110005854A
Application number: CN201810007696.9A
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: 2018-01-04
Filing date: 2018-01-04
Publication date: 2019-07-12

Abstract

The invention discloses a kind of valve gear, including driving part and valve component, the valve component includes the first valve seat and the second valve seat, and first valve seat has the first interface being connected to valve chamber；It further include the valve block supported by second valve seat；The top surface of second valve seat has more than two valve ports for being connected to its second interface, the notch or recirculation hole that the valve block has sealing and is connected to the valve chamber；Under the driving of the driving part, the valve block can be rotated relative to second valve seat, so that the sealing closes the valve port, or the notch or the recirculation hole be made to be connected to more than one described valve port.The flow accuracy of the valve gear is high, and flow consistency is preferable.

Description

Valve gear

Technical field

The present invention relates to fluid control component technical fields, more particularly to a kind of valve gear adjusted for flow.

Background technique

With the raising that efficiency requires, the frequency changing refrigeration system based on convertible frequency air-conditioner is developed rapidly, and capillary is as section Fluid element can no longer meet the requirement of refrigeration system frequency conversion, and capillary is replaced by all kinds of valve members that can adjust flow, at present Mostly based on electric expansion valve.

Referring to FIG. 1, Fig. 1 is a kind of existing common diagrammatic cross-section of electric expansion valve.

When work, by external magnet exciting coil, driving motor magnet rotor 1 ' is rotated, and drives needle screw rod 2 ' and fixed spiral shell Mother 3 ' relatively rotates, and realizes moving up and down for 4 ' position needle 5 ' of valve port, opposite by the conical surface end of needle 5 ' and valve port 4 ' The change of position, realizes the variation of the position flow area, to adjust the size of flow.

When valve port 4 ' is closed, to prevent valve port 4 ' and needle 5 ' locked, needle position is provided with spring 6 ', passes through bullet Spring force overcomes the pressure differences of inlet and outlet.

As above, which adjusts flow, the change of flow by the change of needle 5 ' and 4 ' relative position of valve port Change is related to 4 ' size of valve port and 5 ' structure of needle, is unable to accurately control flow in practice, flow consistency is poor.

In addition, needle 5 ' is in the process of moving up and down, friction is inevitably generated between valve port 4 ', it is swollen to influence electronics The service life of swollen valve and performance (such as leakage in occurring), meanwhile, when needle 5 ' acts, rubbing between metals is deposited in associated components Wipe, can not only generate frictional noise, abrasion can be also generated in oil-free lubrication, cause it is stuck, to influence the normal function of valve.

It is that those skilled in the art need to solve at present in view of this, how to design a kind of valve gear that flow consistency is good Certainly the technical issues of.

Summary of the invention

In order to solve the above technical problems, the present invention provides a kind of valve gear, including driving part and valve component, the valve Holder assembly includes the first valve seat and the second valve seat, and first valve seat has the first interface being connected to valve chamber；

It further include the valve block supported by second valve seat；

The top surface of second valve seat has more than two valve ports for being connected to its second interface, and the valve block has sealing The notch or recirculation hole being connected to with the valve chamber；

Under the driving of the driving part, the valve block can be rotated relative to second valve seat, so that the sealing Portion closes the valve port, or the notch or the recirculation hole is made to be connected to more than one described valve port.

This kind of valve gear provided by the invention, has abandoned the needle structure of electric expansion valve in the prior art, will be used to adjust The component of amount of restriction cooperates to realize by valve block structure and improved second valve seat；Specifically, on the top of the second valve seat Face is equipped with multiple valve ports for being connected to its second interface, and valve block is supported by the top surface of the second valve seat, and valve block has sealing and and valve The notch or recirculation hole of chamber connection, by the driving of driving part, valve block can be rotated relative to the second valve seat, so that its sealing Close port, or its notch or recirculation hole is made to be connected to more than one valve port；As above after setting, when the second interface of the second valve seat When as outlet, flow into the refrigerant of valve chamber and flowed out by valve port be connected to valve block notch or recirculation hole, cold medium flux by with it is scarce The circulation area of mouth or the valve port of recirculation hole connection determines, can be realized the quantitative variation of flow, because being opened in the second valve seat The size accuracy of each valve port can control, and the sealing and notch of valve block or the precision of recirculation hole are also easy to guarantee, so as to Ensure flow degree of regulation, flow consistency is preferable；When the second interface of second valve seat is as import, flow regulative mode is with before It states similar, repeats no more.

It is realized in addition, the flow of the valve gear adjusts to rotate by valve block relative to the second valve seat, is not in background technique In stuck failure situation, and between the two using face seal, can be improved leakproofness, it is seen then that the reliability of the valve gear compared with It is high.

The circulation area of each valve port is different, the valve block during rotation, the notch or the recirculation hole energy Enough it is sequentially communicated each valve port.

Each valve port is distributed in using the center of rotation of the valve block as on the same circumference in the center of circle.

The circulation area of each valve port is identical, the valve block during rotation, the notch or the recirculation hole energy Enough it is connected to a valve port or more than two valve ports.

The present invention also provides a kind of valve gear, including driving part and valve component, the valve component includes the first valve Seat and the second valve seat, first valve seat have the first interface being connected to valve chamber；

It further include the valve block supported by second valve seat；

The top surface of second valve seat has the valve port for being connected to its second interface, the valve block have sealing and around The flow path groove of the center of rotation of the valve block circumferentially, the flow path groove are connected to the valve chamber；Along the week of the flow path groove To direction, the circulation area of the flow path groove is different；

Under the driving of the driving part, the valve block can be rotated relative to second valve seat, so that the sealing Portion closes the valve port, or the flow path groove is made to be connected to the valve port.

This kind of valve gear provided by the invention, it is consistent with above-mentioned valve gear principle, it is swollen also to have abandoned electronics in the prior art The component for being used to adjust flow is cooperated to realize by the needle structure of swollen valve by valve block structure and the second valve seat；Specifically , it is equipped with the valve port for being connected to its second interface in the top surface of the second valve seat, valve block is supported by the second valve seat top surface, and can It is rotated relative to the second valve seat, valve block is equipped with sealing and the center of rotation runner being connected to valve chamber circumferentially around valve block Slot, along the circumferential direction of flow path groove, the circulation area of flow path groove is different；During valve block rotation, sealing can be closed Valve closing mouth or flow path groove can be connected to valve port；As above it after setting, when the second interface of the second valve seat is as outlet, flows into The refrigerant of valve chamber is flowed out by the position for the flow path groove being connected to valve port through valve port, the flow path groove that cold medium flux is connected to due to valve port The circulation area at position determines, can be realized the consecutive variations of flow by the design to flow path groove, because being set to the runner of valve block The size accuracy of slot can control, and so as to ensure flow degree of regulation, flow consistency is preferable；The second of second valve seat connects Mouthful be used as import when, flow regulative mode with it is aforementioned similar, repeat no more.

The valve block has a recirculation hole being connected to the valve chamber or opening, and the recirculation hole or the opening are located at One end of the flow path groove, and be connected to the flow path groove, the circulation area of the recirculation hole or the opening is not less than described The maximum flow area of flow path groove.

The radial width of the flow path groove is identical；Along the circumferential direction of the flow path groove, the axial depth of the flow path groove It is different.

Along the circumferential direction of the flow path groove, from one end of the recirculation hole or the open communication to the flow path groove The other end, the axial depth of the flow path groove is gradually reduced.

The maximum flow area of the flow path groove is not more than the circulation area of the valve port.

The driving part includes magnet rotor and the rotating wheel that is fixedly connected with the magnet rotor, and the rotating wheel has edge Circumferentially distributed external toothing tooth；The valve block has the outer gear portion with the external toothing tooth engagement, and the magnet rotor being capable of band The rotating wheel rotation is moved, to drive the valve block to rotate synchronously.

Shaft is provided on second valve seat, the valve block is sheathed on the shaft, gear is additionally provided in the shaft Circle, to limit the axial position of the relatively described shaft of the valve block.

The outer gear portion of the valve block has one section of company's teeth portion, limiting the slewing area of the valve block, and The initial relative position of the valve block and second valve seat.

Detailed description of the invention

Fig. 1 is a kind of existing common diagrammatic cross-section of electric expansion valve；

Fig. 2 is a kind of diagrammatic cross-section of specific embodiment of valve gear provided by the present invention；

Fig. 3 is the structural schematic diagram of the valve part of valve gear in Fig. 2；

Fig. 4 is the structural schematic diagram of the coil component of valve gear in Fig. 2；

Fig. 5 is the diagrammatic cross-section of the installation position of valve part and coil component in Fig. 2；

Fig. 6 is the structural schematic diagram of the first mounting plate of specific embodiment middle line coil component；

Fig. 7 is the structural schematic diagram of the second mounting plate of valve part in specific embodiment；

Fig. 8 is a kind of diagrammatic cross-section of valve part in specific embodiment；

Fig. 9 is the diagrammatic cross-section of valve component in Fig. 8；

Figure 10 is the top view of the second valve seat in Fig. 9；

Figure 11 is a kind of bottom view of valve block in Fig. 8；

Figure 12 is valve block and the partial enlarged view at the second valve seat cooperation in Fig. 8；

Figure 13 is the bottom view of another valve block in Fig. 8；

Figure 14 is valve block shown in Figure 13 and the diagrammatic cross-section at the second valve seat cooperation；

Figure 15 is the top view of the second valve seat in another specific embodiment；

Figure 16 is a kind of bottom view of the valve block cooperated with the second valve seat shown in Figure 15；

Figure 17 is the diagrammatic cross-section at valve block cooperation shown in the second valve seat shown in Figure 15 and Figure 16；

Figure 18 is the bottom view of another valve block cooperated with the second valve seat shown in Figure 15；

Figure 19 is the diagrammatic cross-section at valve block cooperation shown in the second valve seat shown in Figure 15 and Figure 18.

Wherein, the one-to-one relationship in Fig. 1 between component names and appended drawing reference is as follows:

Magnet rotor 1 ', screw rod 2 ', fixture nut 3 ', valve port 4 ', needle 5 ', spring 6 '；

Wherein, one-to-one relationship of the Fig. 2 into Figure 19 between component names and appended drawing reference is as follows:

Coil component 100, the first mounting plate 101, the first bending segment 111, positioning convex portion 112, the first guide section 113；

Valve part 200, the second mounting plate 201, the second bending segment 211, location hole 212, the second guide section 213；

Valve bottom plate 21, the first valve seat 22；

Second valve seat 23, centre bore 231, valve port 232 (232a, 232b, 232c, 232d, 232e)；

Valve block 24, sealing 241, notch 242, outer gear portion 243 connect teeth portion 2431, the first recirculation hole 244；

Shaft 25, retaining ring 26, central axis 27, rotating wheel 28, magnet rotor 29, axle sleeve 30, shell 31, inlet tube 32, outlet Pipe 33, filtration members 34, acoustic element 35；

Second valve seat 23 ', valve port 232 '；

Valve block 24 ', sealing 241 ', flow path groove 242 ', outer gear portion 243 ' connect teeth portion 2431 ', the second recirculation hole 244 ', opening 245 '.

Specific embodiment

In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description The present invention is described in further detail.

It should be noted that it is to be located in figure with each components in scheming and zero that the noun of locality involved in herein is upper and lower etc. The mutual position of component is intended merely to the clear of statement technical solution and conveniently, should not be construed as to protection come what is defined The absolute limit of range；Similarly, " first ", " second " etc. have same names for being merely for convenience of describing to distinguish Different components, order of representation, not should not be construed as certain restriction more.

Fig. 2 to Fig. 4 is please referred to, Fig. 2 is a kind of diagrammatic cross-section of specific embodiment of valve gear provided by the present invention；Fig. 3 For the structural schematic diagram of the valve part of valve gear in Fig. 2；Fig. 4 is the structural schematic diagram of the coil component of valve gear in Fig. 2.

In the embodiment, valve gear includes coil component 100 and valve part 200, wherein coil component 100 is coated at Valve part 200, coil component 100 are matched with the magnet rotor 29 inside the shell 31 of valve part 200, form driving portion The specific effect of part, the driving part will be introduced later.

The valve gear is additionally provided with mounting structure, and coil component 100 is fixed on well on valve part 200.

In specific scheme, which includes being fixedly arranged on the first mounting plate 101 of 100 bottom of coil component and fixed The second mounting plate 201 in 200 bottom of valve part, specifically, the second mounting plate 201 is fixedly arranged on the valve seat of valve part 200 The bottom of component.

It is the diagrammatic cross-section of the installation position of valve part and coil component in Fig. 2 please also refer to Fig. 5, Fig. 5.

Wherein, the first mounting plate 101 has the first bending segment 111 stretched out towards valve component, first bending segment 111 The inside side of valve gear center (refer to close to) be equipped with positioning convex portion 112, the second mounting plate 201 has towards coil component 100 the second bending segments 211 stretched out, second bending segment 211 have the location hole 212 matched with positioning convex portion 112.Specifically Ground, the first bending segment 111 in axial direction extend downwardly, and the second bending segment 211 in axial direction stretches out upwards, axial direction here Refer to the axial direction of the valve chamber R of valve gear.

Wherein, the first mounting plate 101 and the second mounting plate 201 are elastic component.It should be noted that elastic component herein Refer to that mounting plate after being deformed by external force and cancelling external force again, can restore rapidly to original state.Certainly, the elasticity Part should also have certain intensity, so that the installation of valve part 200 and coil component 100 is reliable.

When assembly, coil component 100 is sheathed on valve part 200 from the top down, makes its first bending segment 111 and second curved The position of trisection 211 is corresponding, and in illustrated scheme, the first bending segment 111 is located at the outside of the second bending segment 211；It assembles downwards In the process, the positioning convex portion 112 set on 111 inside of the first bending segment can inwardly squeeze the second bending segment 211, generate it certain Flexible deformation, correspondingly, the first bending segment 111 also will receive outwardly against power and generate certain flexible deformation；When fixed It when position protrusion 112 is moved downward to the position of location hole 212, then can be caught in location hole 212, at this point, positioning convex portion 112 applies It disappears in the external force of the second bending segment 211, the second bending segment 211 is sprung back outward into, the first inwardly rebound of bending segment 111, so that fixed Position protrusion 112 and location hole 212 can cooperate closely, prevent coil component 200 from deviating from or circumferentially shaking, thus relatively fixed Coil component 100 and valve part 200.

In order to which coil component 100 and the fixation of valve part 200 are more reliable, the size of positioning convex portion 112 and location hole 212 It may be designed as being interference fitted.

Specifically, location hole 212 is circle, the shape of positioning convex portion 112 is adapted with location hole 212.It is appreciated that real When border is arranged, location hole 212 or other shapes, such as the structures such as oval or rectangular.Comparatively, it will position Hole 212 is designed as circle, easy to process, and convenient for assembly.

More specifically, on the basis of location hole 212 is circular, positioning convex portion 112 can be set as cone-shaped structure, that is, It says, the sectional area of positioning convex portion 112 is gradually increased from inside to outside, in this way, convenient for assembly.It is appreciated that in this way after design, positioning The maximum outside diameter size of protrusion 112 should be consistent with location hole 212.

With reference to Fig. 6 and Fig. 7, wherein Fig. 6 is the structural schematic diagram of the first mounting plate of specific embodiment middle line coil component； Fig. 7 is the structural schematic diagram of the second mounting plate of valve part in specific embodiment.

Further, the lower end of the first bending segment 111 is inclined outwardly to form the first guide section 113, the second bending segment 211 Upper end slopes inwardly to form the second guide section 213.

In this way, the first guide section 113 first contacts the second guide section 213, and obliquely with the second guide section 213 when assembly Movement, convenient for the cooperation of the first bending segment 111 and the second bending segment 211.

Specifically, the first mounting plate 101 and the second mounting plate 201 can be stamping parts or moulding, simple processing is reliable.

It should be pointed out that the first bending segment 111 may be alternatively located at the inside of the second bending segment 211 when actual setting, this When, the outside of the first bending segment 111 is located at set on the positioning convex portion 112 of the first bending segment 111.Correspondingly, the first bending segment 111 First guide section of lower end, which slopes inwardly, to be arranged, and the second guide section of 211 upper end of the second bending segment is inclined outwardly setting.

Please also refer to Fig. 8 and Fig. 9, Fig. 8 is a kind of diagrammatic cross-section of valve part in specific embodiment；Fig. 9 is Fig. 8 The diagrammatic cross-section of middle valve component.

In the embodiment, valve part 200 include valve component, the valve component include split settings valve bottom plate 21, First valve seat 22 and the second valve seat 23；Wherein, it is offered on valve bottom plate 21 compatible with the first valve seat 22 and the second valve seat 23 Mounting hole, the first valve seat 22 and the second valve seat 23 are installed in respectively in corresponding mounting hole, specifically, the fixation of welding can be used Mode was not only easy but also reliable.

Specifically, step surface upward can be arranged, on the first valve seat 22 with the bottom with valve bottom plate 21 for convenience of positioning It abuts, is also provided with step surface upward, on the second valve seat 23 to abut with the bottom of valve bottom plate 21.

Certainly, when actual setting, the outer diameter of the first valve seat 22 and the second valve seat 23 isometrical can also be arranged, in corresponding installation Step surface used for positioning is set on hole, to limit the relative axial position of the first valve seat 22, the second valve seat 23 and valve bottom plate 21.

It is installed with shell 31 on valve bottom plate 21, as shown, shell 31 is in convex shape structure, is set in the path section of shell 31 There is magnet rotor 29, major diameter section and valve bottom plate 21 are enclosed valve chamber R.

First valve seat 22 has the first interface being connected to valve chamber R, and the second valve seat 23 has second interface；Hereafter with first Interface is used as outlet as import, second interface and is described, that is to say, that in the present embodiment, 22 conduct of the first valve seat Import valve seat, the second valve seat 23 are used as outlet valve seat；It is appreciated that the first valve seat 22 can also be used as in practical application Mouth valve seat, the second valve seat 23 is used as import valve seat, in this way, the first interface of the first valve seat 22 is the outlet of refrigerant, the second valve The second interface of seat 23 is the import of refrigerant, and the principle that cold medium flux is adjusted is consistent, is not repeated to illustrate.

Specifically, being connected with the first adapter tube on the first valve seat 22, in the program, the first adapter tube is refrigerant inlet pipe, hereafter It is referred to as inlet tube 32, the import of the first valve seat 22 is connected to inlet tube 32；The second adapter tube, the party are connected on second valve seat 23 In case, the second adapter tube is refrigerant exit pipe, hereinafter collectively referred to as outlet 33.

Valve part 200 further includes the valve block 24 supported by the second valve seat 23.

It is the top view of the second valve seat in Fig. 9 please also refer to Figure 10 to Figure 12, Figure 10；Figure 11 is a kind of valve block in Fig. 8 Bottom view；Figure 12 is valve block and the partial enlarged view at the second valve seat cooperation in Fig. 8.

Wherein, the top surface of the second valve seat 23 in scheme shown in Figure 10, shows with more than two valve ports 232 for being connected to outlet It gives to example property the second valve seat 23 and sets structure type there are five valve port 232.

The notch 242 that valve block 24 has sealing 241 and is connected to valve chamber R, as shown in figure 11, in illustrated scheme, notch 242 fan-shaped shapes.

Understand in conjunction with Figure 12, specifically, the bottom of valve block 24 is equipped with the protrusion for the round stretched out axially downward, at this Open up the notch 242 of fan shape on protrusion, the bottom surface of the protrusion forms sealing 241, it is clear that the sealing 241 of valve block 24 with The top surface of second valve seat 23 is bonded, in this way, certain space is formed between the second valve seat 23 at notch 242, it can be with valve chamber R Connection.

Under the driving of driving part, which can rotate relative to the second valve seat 23, so that its sealing 241 closes valve Mouth 232, or notch 242 is made to be connected to more than one valve port 232；Specifically, sealing 241 can close all valve ports 232, so that Valve gear is in full off state.

As above, which has abandoned the needle structure of electric expansion valve in the prior art, will be used to adjust the portion of flow Part cooperates to realize by valve block 24 and improved second valve seat 23；Specifically, being equipped with two in the top surface of the second valve seat 23 The valve port 232 of a above connection outlet, valve block 24 are supported by the top surface of the second valve seat 23, valve block 24 have sealing 241 and with The notch 242 of valve chamber R connection, by the driving of driving part, valve block 24 can be rotated relative to the second valve seat 23, so that it is sealed 241 close port 232 of portion, or its notch 242 is made to be connected to valve port 232；As above setting after, flow into valve chamber R refrigerant by with valve The valve port 232 that the notch 242 of block 24 is connected to flows out, and cold medium flux is determined by the circulation area for the valve port 232 being connected to notch 242 It is fixed, it can be realized the quantitative variation of flow, can be controlled because being opened in the size accuracy of each valve port 232 of the second valve seat 23, valve The sealing 241 of block 24 and the precision of notch 242 are also easy to guarantee, so as to ensure flow degree of regulation, flow consistency Preferably.

It is realized in addition, the flow of the valve gear adjusts to rotate by valve block 24 relative to the second valve seat 23, is not in stuck The situation of failure, and sealed between the two using face, it can be improved leakproofness, the reliability of the valve gear is higher.

Above-mentioned valve component is set as separate structure, facilitates the processing of each component, especially convenient for each valve on the second valve seat 23 The processing of mouth 232, is conducive to the precision for controlling each valve port 232.

It is appreciated that valve component may be to be integrally machined molding structure when actual setting.

In specific scheme, the circulation area of each valve port 232 on the second valve seat 23 is different, as shown in Figure 10, with Figure 10 Shown visual angle, in the counterclockwise direction, five valve ports 232 are followed successively by 232a, 232b, 232c, 232d and 232e.

In illustrated scheme, the aperture of five valve ports 232a, 232b, 232c, 232d and 232e are successively successively decreased, and five valves Mouth 232a, 232b, 232c, 232d and 232e are distributed in using the center of rotation of valve block 24 as on the same circumference in the center of circle.

After designing in this way, during rotation, notch 242 is connected to a valve port 232 to valve block 24 every time, when valve block 24 is along same When one direction rotates, the circulation area increasing or decreasing for the valve port 232 that notch 242 is sequentially communicated, convenient for being flowed in practical application The adjusting of amount.

In conjunction with Fig. 8 and Figure 12, after refrigerant enters valve chamber R from inlet tube 32, it can flow into and lack from the notch 242 of valve block 24 The valve ports 232 of 242 connection of mouth, and flowed out through valve port 232 from outlet 33.

Arrow in Figure 12 shows the flow direction of refrigerant.

Further, the corresponding central angle of adjacent two valve port 232 is equal, that is to say, that in the arc section of arrangement valve port 232 On, multiple uniformly arrangements of valve port 232；In this way, valve block 24 often turns over identical angle, i.e., flow is once adjusted, be convenient for Operation to valve gear.

It should be pointed out that in practice, when arrangement, the aperture of each valve port 232 can be irregular, gets, in arrangement valve port On 232 arc section, multiple valve ports 232 can also arrange unevenly.Only in contrast, regular, equal as shown in Figure 10 Even arrangement, the control being more convenient for product.

It may also be noted that multiple valve ports 232 can not also be distributed on the same circumference, valve block 24 when actual setting Sealing 241 and notch 242 according to valve port 232 arrangement carry out adaptability adjustment, as long as the cooperation of the two is so that valve block In 24 rotation processes, sealing 241 can close whole valve ports 232, and notch 242 can be successively connected to each valve port 232, To adjust changes in flow rate.

In specific scheme, the engineering material that higher-strength can be used in valve block 24 is made, and wear-resisting and coefficient of friction is small, can It adapts to use without oil environment.

In specific scheme, with reference to Fig. 8, centre bore 231 is offered on the second valve seat 23, is provided with and is turned in centre bore 231 Axis 25, specifically, shaft 25 can fix by welding with the second valve seat 23.

Valve block 24 is sheathed on the shaft 25, and retaining ring 26 is additionally provided in shaft 25, to limit valve block 24 with respect to shaft 25 Axial position.It is clamped between retaining ring 26 and the second valve seat 23 that is, valve block 24 is equivalent to, to ensure that valve block 24 can It fits closely in the top surface of the second valve seat 23, while valve block 24 can also 25 rotation around the shaft.

The design of shaft 25 can limit the center of rotation of valve block 24, prevent from deviating in 24 rotation process of valve block.

In addition, in addition to be arranged retaining ring 26, if the structure of valve component allows, can also valve block 24 top surface and shell 31 Between elastomeric element is set, valve block 24 is pressed against on the second valve seat 23.

Driving part further includes and magnet rotor 29 is fixed and connected other than the aforementioned coil component 100 and magnet rotor 29 referred to The rotating wheel 28 connect, the rotating wheel 28 have circumferentially distributed external toothing tooth, and valve block 24 has outer with external toothing tooth engagement Gear part 243.

When work, drives magnet rotor 29 to rotate by coil component 100, drive rotating wheel 28 to rotate, pass through rotating wheel 28 External toothing tooth and outer gear portion 243 engaged transmission, can be rotated with movable valve block 24.

Specifically, magnet rotor 29 includes barrel portion and bottom wall part, wherein bottom wall part has jack, the upper end of rotating wheel 28 With annular groove cooperating with the jack, there is position limiting structure between jack and annular groove, is turned with relatively fixed rotating wheel 28 and magnetic Son 29.

Wherein, for position limiting structure there are many implementation, a kind of relatively simple mode is the shape by jack and annular groove Shape is realized.For example, at least one planar section is arranged in jack, the slot bottom of annular groove has the plane cooperated with the planar section of jack Section, in this way, the annular groove inlay card of rotating wheel 28 is in the jack of magnet rotor 29 after rotating wheel 28 is plugged in magnet rotor 29, two The planar section of person fits, and can limit the relative position of rotating wheel 28 Yu magnet rotor 29.Specifically, jack and annular groove can be with It is set as mutually matched polygonized structure.

The bottom wall part of magnet rotor 29 also has balance hole, to keep the pressure balance of the upper and lower chamber of magnet rotor 29.

Specifically, being fitted with central axis 27 inside rotating wheel 28, one end of central axis 27 inserts in valve bottom plate 21, the other end admittedly It is affixed with shell 31, in such manner, it is possible to limit the center of rotation of rotating wheel 28, it is ensured that the cooperation between rotating wheel 28 and valve block 24.

With reference to Fig. 8, the other end of central axis 27 is affixed by axle sleeve 30 and shell 31, specifically, the bottom end of axle sleeve 30 and There is lesser pre-determined distance, to limit the play amplitude of magnet rotor 29 in the axial direction between the top of rotating wheel 28.

In specific scheme, the outer gear portion 243 of valve block 24 also has one section of company's teeth portion 2431, to limit valve block 24 The initial relative position of slewing area and valve block 24 and the second valve seat 23, in order to product debugging and application when benchmark really It is fixed.

As shown in figure 11, when valve block 24, which turns to it, connects the position that teeth portion 2431 is contacted with rotating wheel 28, because connecting teeth portion 2431 company's toothing, can not with the external toothing tooth engagement of rotating wheel 28, so as to realize the stop of valve block 24.

Company's teeth portion 2431 of valve block 24 is contacted with one end of 28 company's of can be configured such that teeth portion 2431 of rotating wheel with rotating wheel 28 When, the sealing 241 of valve block 24 closes all valve ports 232, and in 24 rotation process of valve block, notch 242 can successively be beaten Valve opening mouth 232a, 232b, 232c, 232d and 232e realize the adjusting of flow from big to small.It certainly, can also root in practical application The initial position of valve block 24 and the second valve seat 23 is limited according to demand.

In specific scheme, the import of inlet tube 32 is the import without throttling action, that is to say, that its circulation area with into Mouth pipe 32 is roughly the same, does not play the role of throttling to the refrigerant flowed into valve chamber R, and filtration members 34 are arranged in entrance, with The impurity in refrigerant is filtered, prevents impurity from entering in valve chamber R, results in blockage or wear to associated structural component.

Specifically, filtration members 34 are arranged between the first valve seat 22 and inlet tube 32.

With reference to Fig. 8, specifically, the first valve seat 22 has cascaded surface ladder hole directed downwardly, which is first The import of valve seat 22；The aperture of large diameter hole of the outer diameter and ladder hole of inlet tube 32 is suitable, and inlet tube 32 is embedded in ladder admittedly In the large diameter hole of through-hole, filtration members 34 have a flanging of radially outward bending, and the upper end of inlet tube 32 is by filtration members 34 Flanging be pressed against the cascaded surface of ladder hole；It designs, is realized by the cooperation of inlet tube 32 and the first valve seat 22 to mistake in this way The positioning for filtering part 34 can remove the fixed structure design of filtration members 34 from, implement more simple and reliable.It is appreciated that the cascaded surface court Under ladder hole be made of the relatively small diameter holes of the relatively large large diameter hole in aperture and aperture, the two junction formed rank Tread.

Certainly, filtration members 34 can also be only fixedly connected with the first valve seat 22 or inlet tube 32.

In specific scheme, it also is provided with acoustic element 35 between the second valve seat 23 and outlet 33, certainly, acoustic element 35 With cavernous structure, to ensure that refrigerant can circulate.The setting of acoustic element 35 can reduce noise.

Specifically, the second valve seat 23 includes valve roof and valve peripheral wall, wherein valve port 232 is set to reference to Fig. 8 and Figure 12 Valve roof；The middle part of the valve roof of second valve seat 23 has the protrusion extended downwardly, and outlet 33 is intercalated in the second valve seat 23, Acoustic element 35 is connected between outlet 33 and the protrusion, can avoid the additional structure that fixed acoustic element 35 is arranged, and can disappear Annular chamber R1 is formed between sound part 35 and the second valve seat 23 first passes through annular chamber R1, then lead to when refrigerant is flowed out from valve port 232 The outflow of acoustic element 35 is crossed, the setting of annular chamber R1 can play certain buffer function to refrigerant.

Wherein, the valve bottom plate 21 of valve component can be by being stamped and formed out, and the first valve seat 22 and the second valve seat 23 can lead to Vehicle Processing is crossed to be formed.

It is the bottom view of another valve block in Fig. 8 please also refer to Figure 13 and Figure 14, Figure 13；Figure 14 is valve block shown in Figure 13 With the diagrammatic cross-section at the second valve seat cooperation.

In the program, the structure of valve block 24 with it is aforementioned similar, difference is only that: being offered in valve block 24 and is connected to valve chamber R The first recirculation hole 244, rather than 242 form of notch.

With reference to Figure 13 and Figure 14, likewise, the circular protrusion stretched out axially downward is equipped in the bottom of valve block 24, The first recirculation hole 244 of perforation valve block 24 is opened up on the protrusion position, the bottom surface of the protrusion forms sealing 241.

When valve block 24 is rotated relative to the second valve seat 23, the first recirculation hole 244 can be successively connected to each valve port 232, it is clear that It the position of first recirculation hole 244 should be corresponding with the position of valve port 232.

It is designed for the ease of structure and easy to process, each valve port 232 of the second valve seat 23 is preferably arranged with 24 turns of valve block Dynamic center is on the same circumference in the center of circle, in this way, the number of first recirculation hole 244 and arrangement are also more convenient true in valve block 24 It is fixed.

Certainly, according to actual needs, the arrangement of each valve port 232 of the second valve seat 23 can also change design, valve block 24 it is close The structure corresponding change of envelope portion 241 and the first recirculation hole 244.

In specific scheme, the circulation area of the first recirculation hole 244 of valve block 24 is not less than the maximum flow face of valve port 232 Product, in this way, the size of cold medium flux depends on the size with valve port 232 completely, convenient for control.

It can be flowed from the first recirculation hole 244 of valve block 24 after refrigerant enters valve chamber R from inlet tube 32 in conjunction with Fig. 8 and Figure 14 Enter the valve port 232 being connected to the first recirculation hole 244, and is flowed out through valve port 232 from outlet 33.

Arrow in Figure 14 shows the flow direction of refrigerant.

Other than the setting of the circulation area difference of above-mentioned each valve port 232, the circulation area of each valve port 232 of the second valve seat 23 Can with identical setting, at this point, change the structure design of the sealing 241 and notch 242 or the first recirculation hole 244 of valve block 24, So that in 24 rotation process of valve block, notch 242 or the first recirculation hole 244 can be connected to one or two in multiple valve ports 232 More than a, that is to say, that adjust cold medium flux by changing the number for the valve port 232 being connected to.

In above-mentioned each scheme, the set-up mode of the second valve seat 23 and the flow adjusting structure of valve block 24 is accomplished that flow Quantitative variation, other than this design, can also be other forms so that cold medium flux can be realized consecutive variations.

Figure 15 to Figure 17 is please referred to, Figure 15 is the top view of the second valve seat in another specific embodiment；Figure 16 be and figure A kind of bottom view of valve block of the cooperation of second valve seat shown in 15；Figure 17 is that valve block shown in the second valve seat shown in Figure 15 and Figure 16 cooperates The diagrammatic cross-section at place.

In the embodiment, the other structures of valve gear are consistent with the above, are not repeated to illustrate.

In the embodiment, the second valve seat 23 ' is above provided only with the valve port 232 ' of a connection outlet, and valve block 24 ' has sealing Portion 241 ' and center of rotation flow path groove 242 ' circumferentially around valve block 24 ', one end of flow path groove 242 ' passes through the second circulation Hole 244 ' is connected to valve chamber R, it is clear that the second recirculation hole 244 ' runs through valve block 24 ', and flow path groove 242 ' is set to valve block 24 ' and the The bottom surface of two valve seats 23 ' fitting.

It should be pointed out that the second recirculation hole 244 ' can also be not arranged in one end of flow path groove 242 ', theoretically, second Any position in flow path groove 242 ' can be set in through-hole 244 ', as long as flow path groove 242 ' can be made to be connected to by it with valve chamber R , comparatively, one end that flow path groove 242 ' is arranged in the second recirculation hole 244 ' is easy to process, and convenient for control.

Along the circumferential direction of flow path groove 242 ', the circulation area of flow path groove 242 ' is different.

Second valve seat 23 ' and valve block 24 ' are other than adjusting the structure of flow, other structures and aforementioned similar, such as valve block 24 ' also have the outer gear portion 243 ' cooperated with the external toothing tooth engagement of rotating wheel 28, which, which also has, is used for Company's teeth portion 2431 ' of stop.

Wherein, the radial position of flow path groove 242 ' and the radial position of valve port 232 ' are corresponding, to ensure 232 ' energy of valve port It is enough to be connected to flow path groove 242 '；It is appreciated that in this way, in the circumferential zones at 242 ' place of flow path groove not set slot and hole portion Position forms the sealing 241 ' for being used for close port 232 '.

It is appreciated that the second recirculation hole 244 ', the maximum flow area of flow path groove 242 ' and the circulation area of valve port 232 ' It is related with the maximum value of cold medium flux.

Specifically, the circulation area of the second recirculation hole 244 ' can be not less than the maximum flow area design of flow path groove 242 ', To ensure that the structure of flow path groove 242 ' plays a role cold medium flux adjusting.

More specifically, the maximum flow area of flow path groove 242 ' is not more than the circulation area of valve port 232 ', in this way, theoretical energy The maximum stream flow reached is determined that practical maximum stream flow is determined by the maximum flow area of flow path groove 242 ', product by valve port 232 ' Actual flow can be continuously adjusted 0 between practical maximum stream flow；For example, the attainable flow of valve port standard-sized sheet is 10, flow path groove The corresponding flow of maximum flow area be 5, product flow can be adjusted between 0 to 5, due to valve body rotation step number be it is determining, So the smaller degree of regulation of maximum stream flow is higher.

Certainly, when actual setting, the maximum flow area and valve port 232 ' of the second recirculation hole 244 ' and flow path groove 242 ' Circulation area relationship can not also be according to above-mentioned design.

For example, the maximum flow area of flow path groove 242 ' is also greater than the circulation area setting of valve port 232 ', in this way, practical Maximum stream flow is determined that product actual flow can be continuously adjusted 0 between practical maximum stream flow by valve port 232 '；Such as: valve port The attainable flow of 232 ' standard-sized sheets is 10, and the corresponding flow of 242 ' maximum flow area of flow path groove is 15, and valve block 24 ' turns to one Determine since valve port 232 ' throttles after position and flow reaches 10, valve block 24 ' continues to rotate flow in process and no longer changes, and product is practical Flow is adjusted between 0 to 10, and the case where be always 10 with the presence of one section of operation interval flow.

Can be determined according to specific requirements in practical application, it will be understood that practical maximum stream flow by flow path groove 242 ' most Smaller in 232 ' circulation area of books circulation area and valve port determines.

With reference to Figure 16, in the program, the radial width of flow path groove 242 ' is identical, circumferentially, flow path groove 242 ' it is axial deep Degree is different；That is, the two sides cell wall of flow path groove 242 ' is the design of circular arc cable architecture, the circulation of flow path groove 242 ' in the circumferential Area change is realized by groove depth variation.

Specifically, along the circumferential direction of flow path groove 242 ', from the one end being connected to the second recirculation hole 244 ' to flow path groove The axial depth of the 242 ' other end, flow path groove 242 ' is gradually reduced, that is to say, that the second recirculation hole 244 ' is arranged in runner The maximum one end of the circulation area of slot 242 '；In this way, cold medium flux gradually increases during valve block 24 ' turns in the same direction It adds deduct small, it is convenient to operate in practice.

More specifically, the axial depth of flow path groove 242 ' equably increases along axial direction, to improve the accuracy of flow control And consistency.

It can be from the second recirculation hole 244 ' of valve block 24 ' after refrigerant flows into valve chamber R from inlet tube 32 in conjunction with Fig. 8 and Figure 17 Flow path groove 242 ' is flowed into, the valve port 232 ' through being connected to flow path groove 242 ' flows out outlet 33.

In the program, the variation of flow is controlled, it can be achieved that refrigerant stream by the variation of the circulation area of flow path groove 242 ' The consecutive variations of amount.

Please also refer to Figure 18 and Figure 19, Figure 18 is looking up for another valve block cooperated with the second valve seat shown in Figure 15 Figure；Figure 19 is the diagrammatic cross-section at valve block cooperation shown in the second valve seat shown in Figure 15 and Figure 18.

In the program, the structure of valve block 24 ' is similar with above scheme, and difference is only that: valve block 24 ' above offers communicating valve The opening 245 ' of chamber R, flow path groove 242 ' are connected to by opening 245 ' with valve chamber R.

The structure design of the flow path groove 242 ' of valve block 24 ' still with it is consistent in above scheme.

Specifically, maximum flow area design of the circulation area of the opening 245 ' nor less than flow path groove 242 ', and will Opening 245 ' is set to maximum one end of circulation area of flow path groove 242 '.The maximum flow area of flow path groove 242 ' is it is also preferred that less It is designed in the circulation area of valve port 232 '.

It can flow into and flow from the opening 245 ' of valve block 24 ' after refrigerant flows into valve chamber R from inlet tube 32 in conjunction with Fig. 8 and Figure 19 Road slot 242 ', the valve port 232 ' through being connected to flow path groove 242 ' flow out outlet 33.

In above scheme, the circulation area of flow path groove 242 ' is extremely determined by groove depth, it will be understood that when actual setting, The structure of flow path groove 242 ' may be other forms, for example realize circulating face by the radial width of change flow path groove 242 ' Long-pending change, or changed by radial width and the combination of groove depth, that is, axial depth.

A kind of valve gear provided by the present invention is described in detail above.Specific case used herein is to this The principle and embodiment of invention is expounded, method of the invention that the above embodiments are only used to help understand and Its core concept.It should be pointed out that for those skilled in the art, in the premise for not departing from the principle of the invention Under, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection of the claims in the present invention In range.

Claims

1. valve gear, including driving part and valve component, which is characterized in that the valve component include the first valve seat (22) and Second valve seat (23), first valve seat (22) have the first interface being connected to valve chamber (R)；

It further include the valve block (24) supported by second valve seat (23)；

The top surface of second valve seat (23) has more than two valve ports (232) for being connected to its second interface, the valve block (24) With sealing (241) and the notch (242) or recirculation hole that are connected to the valve chamber (R)；

Under the driving of the driving part, the valve block (24) can rotate relative to second valve seat (23), so that described Sealing (241) closes the valve port (232), or the notch (242) or the recirculation hole is made to be connected to more than one described valve Mouth (232).

2. valve gear according to claim 1, which is characterized in that the circulation area of each valve port (232) is different, described During rotation, the notch (242) or the recirculation hole can be sequentially communicated each valve port (232) to valve block (24).

3. valve gear according to claim 2, which is characterized in that each valve port (232) is distributed in the valve block (24) center of rotation is on the same circumference in the center of circle.

4. valve gear according to claim 1, which is characterized in that the circulation area of each valve port (232) is identical, described During rotation, the notch (242) or the recirculation hole can be connected to the valve port (232) or two to valve block (24) Valve port (232) described above.

5. valve gear, including driving part and valve component, which is characterized in that the valve component include the first valve seat (22) and Second valve seat (23 '), first valve seat (22) have the first interface being connected to valve chamber (R)；

It further include the valve block (24 ') supported by second valve seat (23 ')；

The top surface of second valve seat (23 ') has the valve port (232 ') for being connected to its second interface, valve block (24 ') tool There are sealing (241 ') and the center of rotation flow path groove (242 ') circumferentially around the valve block (24 '), the flow path groove (242 ') are connected to the valve chamber (R)；Along the circumferential direction of the flow path groove (242 '), the circulating face of the flow path groove (242 ') Product is different；

Under the driving of the driving part, the valve block (24 ') can rotate relative to second valve seat (23 '), so that institute It states sealing (241 ') and closes the valve port (232 '), or the flow path groove (242 ') is made to be connected to the valve port (232 ').

6. valve gear according to claim 5, which is characterized in that the valve block (24 ') has one and the valve chamber (R) The recirculation hole or opening (245 ') of connection, the recirculation hole or the opening (245 ') are located at the one of the flow path groove (242 ') End, and be connected to the flow path groove (242 '), the circulation area of the recirculation hole or the opening (245 ') is not less than the stream The maximum flow area of road slot (242 ').

7. valve gear according to claim 5, which is characterized in that the radial width of the flow path groove (242 ') is identical；Edge The axial depth of the circumferential direction of the flow path groove (242 '), the flow path groove (242 ') is different.

8. valve gear according to claim 6, which is characterized in that along the circumferential direction of the flow path groove (242 '), from The other end of the one end of the recirculation hole or opening (245 ') connection to the flow path groove (242 '), the flow path groove The axial depth of (242 ') is gradually reduced.

9. according to the described in any item valve gears of claim 5-8, which is characterized in that the maximum flow of the flow path groove (242 ') Area is not more than the circulation area of the valve port (232 ').

10. valve gear according to claim 1-8, which is characterized in that the driving part includes magnet rotor (29) and with the magnet rotor (29) rotating wheel (28) being fixedly connected, the rotating wheel (28) have circumferentially distributed outer nibble Close tooth；The valve block (24,24 ') has the outer gear portion (243,243 ') with the external toothing tooth engagement, the magnet rotor (29) it is able to drive the rotating wheel (28) rotation, to drive the valve block (24,24 ') to rotate synchronously.

11. valve gear according to claim 10, which is characterized in that be provided with shaft on second valve seat (23,23 ') (25), the valve block (24,24 ') is sheathed on the shaft (25), is additionally provided with retaining ring (26) on the shaft (25), with limitation The axial position of the relatively described shaft (25) of the valve block (24,24 ').

12. valve gear according to claim 10, which is characterized in that the outer gear portion of the valve block (24,24 ') (243,243 ') have one section of company's teeth portion (2431,2431 '), limiting the slewing area of the valve block (24,24 '), and The initial relative position of the valve block (24,24 ') and second valve seat (23,23 ').