CN108799532A

CN108799532A - Valve gear and its sliding block

Info

Publication number: CN108799532A
Application number: CN201710292453.XA
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: 2017-04-28
Filing date: 2017-04-28
Publication date: 2018-11-13
Anticipated expiration: 2037-04-28
Also published as: CN108799532B

Abstract

The invention discloses a kind of valve gear and its sliding block, the sliding block, which has, rotates around it center flow path portion circumferentially and closure part；The flow path portion is connected to the top side and bottom side of the sliding block, and circumferentially, and the circulation area of the flow path portion is different；The sliding block also has the interconnecting piece coordinated with the driving part of the valve gear, so that the sliding block being capable of being rotated by the driving part.The structure design of the sliding block enables valve gear to realize flow-rate adjustment, and can control flow deviation in smaller range, to meet the flow accuracy demand for control of refrigerator and similar small refrigeration systems.

Description

Valve gear and its sliding block

Technical field

The present invention relates to fluid control component technical field, more particularly to a kind of valve gear for flow-rate adjustment and its Sliding block.

Background technology

For refrigerator and similar small refrigeration systems, capillary is mostly used at this stage and is throttled, but capillary does not have The function of standby flow-rate adjustment, under varying environment adjusting, refrigeration system is unable to reach best operating condition, the influence to efficiency It is larger.

It is existing there is also electronic expansion valve for air conditioner is applied in refrigerator and similar small refrigeration systems system, to realize The function of flow-rate adjustment, but because of system requirements difference, the structure of electronic expansion valve for air conditioner cannot be satisfied refrigerator and similar to small The flow control accuracy requirement of type refrigeration system.

In addition, the refrigeration system for needing forward and reverse control, the structure of existing electric expansion valve are carried in forward and reverse The discharge characteristic of confession is essentially identical, but there is refrigeration defrost, refrigeration and heating in practical applications, because of actual setting path length Degree difference, refrigeration and heating can influence the performance of system using same metering characteristics.

Therefore, flow-rate adjustment can be realized by how designing one kind, and flow accuracy controls high valve gear, be this field skill The current technical issues that need to address of art personnel.

Invention content

The object of the present invention is to provide a kind of valve gear and its sliding block, the structure design of the sliding block enables valve gear to realize Flow-rate adjustment, and flow deviation can be controlled in smaller range, to meet the flow of refrigerator and similar small refrigeration systems Precision controlling demand.

In order to solve the above technical problems, the present invention provides a kind of sliding block of valve gear, the sliding block is in rotating around it Heart flow path portion circumferentially and closure part；The flow path portion is connected to the top side and bottom side of the sliding block, and circumferentially, the stream The circulation area in road portion is different；The sliding block also has the interconnecting piece coordinated with the driving part of the valve gear, so as to described Sliding block being capable of being rotated by the driving part.

The sliding block of valve gear provided by the invention, for realizing the flow-rate adjustment of valve gear, specifically, in sliding block upper edge week To flow path portion and closure part is provided with, flow path portion is connected to the top side and bottom side of sliding block, and sliding block is equipped with the driving portion with valve gear The interconnecting piece of part cooperation, so that sliding block being capable of being rotated by driving part；When work, sliding block makes its runner by rotation Portion is connected to the valve port of valve gear, to the inlet and outlet of communication valve means, or makes the valve of its closure part shut-off valve assembly Mouthful, to separate the inlet and outlet of valve gear, in this way, realizing the connection of import and the outlet of valve gear by the rotation of sliding block Or partition, so that valve gear is had the function of fully closed；Meanwhile the circulation area of the flow path portion of sliding block circumferentially is different, passes through in this way The rotation of sliding block, the different location for making flow path portion are connected to the valve port of valve gear, the adjusting of flow are realized with this, because of flow path portion Circulation area circumferentially is easy to set up and adjusts, can be according to the smaller of system requirements setting, so passing through sliding block flow path portion The setting of circulation area be easy to control flow deviation in smaller range, such as within 5%, to meet refrigerator and similar small The flow control accuracy requirement of type refrigeration system.

The flow path portion includes the not exactly the same runner hole in multiple apertures, and multiple runner pore size distributions are in arcuation.

The bottom surface of the sliding block has multiple inner groovies, corresponding with multiple positions in runner hole respectively, and each described The size of inner groovy is all higher than the corresponding runner hole.

The aperture in multiple runner holes is circumferentially incremented by successively.

The flow path portion is arc-shaped continuous variable cross-section through-hole.

The flow path portion includes a recirculation hole and arc-shaped continuous variable cross-section slot, and the variable cross-section slot is set to described The bottom surface of sliding block, the recirculation hole runs through the sliding block, and is connected to the variable cross-section slot.

The circulation area of the recirculation hole is not less than the maximum flow area of the variable cross-section slot.

The circulation area of the variable cross-section slot is circumferentially incremented by successively, and the recirculation hole is located at the stream of the variable cross-section slot Logical maximum one end of area.

The side cell wall of the variable cross-section slot is in circular arc line, and other side cell wall is in Archimedes spiral；Alternatively, described become cuts The both sides cell wall of face slot is in Archimedes spiral.

The present invention also provides a kind of valve gears, including driving part and valve part, further include two any of the above-described institutes The sliding block stated；

The valve part includes two valve seats with the two sliding block cooperations respectively, and the top surface of two valve seats is equipped with One valve port, two valve ports are respectively communicated with two interfaces；

Further include two elastic components, for two sliding blocks to be pressed against the two valve seat top surfaces respectively；The sliding block can also Enough relatively described valve seats move up and down；

The driving part can drive the sliding block to be rotated relative to the corresponding valve seat, so that the connection pair of its flow path portion The valve port for the valve seat answered, or the valve port that makes its closure part close the corresponding valve seat.

The valve gear has above-mentioned slide block structure, it may have technique effect identical with above-mentioned sliding block.In addition, the valve gear If there are two sliding block and two valve seats being respectively cooperating with, the top surface of each valve seat opens up valve port, and two valve ports are respectively communicated with two interfaces, Two sliding blocks are pressed against the top surface of valve seat by two elastic components respectively；When work, the refrigerant flowed into from an interface can incite somebody to action One of sliding block pushes away the valve seat coordinated with it, drives another sliding block to be rotated relative to another valve seat by driving part, The flow path portion of another sliding block is set to be connected to the valve port of another valve seat, to which refrigerant flows out another interface by another valve port；In this way, should Valve gear can realize forward and reverse circulation, and discharge characteristic when forward and reverse circulation respectively by the flow path portion structure of two sliding blocks Lai It determines, that is to say, that can realize forward and reverse different flow control characteristic by the different designs to two sliding block upper runner portions.

The driving part includes magnet rotor and is fixedly arranged on the rotating wheel of the magnet rotor, and the rotating wheel has to be nibbled outside Tooth；Two sliding blocks all have the outer gear portion engaged with the external-toothing；The magnet rotor can drive the rotation to rotate It is dynamic, to drive two sliding blocks to rotate synchronously；The outer gear portion forms the interconnecting piece.

The present invention also provides a kind of valve gears, including driving part and valve base part, further include described in any one of the above embodiments Sliding block；

The top surface of the valve base part is equipped with the valve port of connection inlet and outlet；The bottom surface of the sliding block and the seat portion The top surface of part is bonded；

The driving part can drive the sliding block to be rotated relative to the valve base part, so that the flow path portion is connected to institute Valve port is stated, or the closure part is made to close the valve port.

Since the valve gear has above-mentioned slide block structure, so there is technique effect identical with above-mentioned sliding block, here not It repeats again.

Description of the drawings

Fig. 1 is a kind of valve gear of embodiment cuing open when refrigerant flows to second interface from first interface provided by the present invention Face schematic diagram；

Fig. 2 is a kind of valve gear of embodiment cuing open when refrigerant flows to first interface from second interface provided by the present invention Face schematic diagram；

Fig. 3 is a kind of structural schematic diagram of angle of sliding block of first embodiment provided by the present invention；

Fig. 4 is the structural schematic diagram of the sliding block another kind angle of first embodiment provided by the present invention；

Fig. 5 is the vertical view of sliding block shown in Fig. 3；

Fig. 6 is the upward view of sliding block shown in Fig. 3；

Fig. 7 is valve casing, valve seat in specific embodiment, takes over and the structural schematic diagram of central shaft；

Fig. 8 is the diagrammatic cross-section of structure shown in Fig. 7；

Fig. 9 is the structural schematic diagram of valve casing in Fig. 7；

Figure 10 is the vertical view of valve casing in Fig. 9；

Figure 11 is the structural schematic diagram of valve seat in Fig. 7；

Figure 12 is the vertical view of valve seat in Figure 11；

Figure 13 be Figure 12 in A-A to diagrammatic cross-section；

Figure 14 is the structural schematic diagram of valve deck in specific embodiment；

Figure 15 is the upward view of valve deck in Figure 14；

Figure 16 is the diagrammatic cross-section of valve deck in Figure 14；

Figure 17 is the structural schematic diagram of magnet rotor and rotating wheel in specific embodiment；

Figure 18 is the diagrammatic cross-section of structure shown in Figure 17；

Figure 19 is the structural schematic diagram of magnet rotor in Figure 17；

Figure 20 is the structural schematic diagram of rotating wheel in Figure 17；

Figure 21 is the upward view that sliding block engages cooperation with rotating wheel in specific embodiment；

Figure 22 is a kind of structural schematic diagram of angle of the sliding block of second embodiment provided by the present invention；

Figure 23 is the structural schematic diagram of the sliding block another kind angle of second embodiment provided by the present invention；

Figure 24 is the vertical view of sliding block shown in Figure 22；

Figure 25 is the upward view of sliding block shown in Figure 22；

Figure 26 is the diagrammatic cross-section of the valve gear of another embodiment provided by the present invention.

In Fig. 1-Figure 26：

Magnet rotor 11, barrel portion 111, bottom wall part 112, jack 1121, balance hole 1122, rotating wheel 12, external-toothing 121, Annular groove 122, central through hole 123；

Valve part 20, valve casing 21, mounting hole 211, valve seat 22, the first valve seat 22a, the second valve seat 22b, the first plane 221a, the second plane 221b, the first valve port 222a, the second valve port 222b, first interface 223a, second interface 223b, blind hole 224, step surface 225；

Valve deck 23, first rotating shaft 231a, the second shaft 231b, boss 232, leg section 233；

Sliding block 31, the first sliding block 31a, the second sliding block 31b, recirculation hole 311, variable cross-section slot 312, cavity 313, protrusion 314, Outer gear portion 315, canister portion 316；

Sliding block 31 ', runner hole 311 ', inner groovy 312 '；

First elastic component 40a, the second elastic component 40b, shell 50, central shaft 60, the first take over 70a, the second take over 70b；

Magnet rotor 11 ', shaft 12 ',

Valve part 20 ', import 201 ', outlet 202 ', valve port 203 '；

Sliding block 31 ", preloading spring 40 '.

Specific implementation mode

Core of the invention, which is to provide a kind of valve gear and its sliding block, the structure design of the sliding block, enables valve gear to realize Flow-rate adjustment, and flow deviation can be controlled in smaller range, to meet the flow of refrigerator and similar small refrigeration systems Precision controlling demand.

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.

For ease of understanding and illustrate, illustrates together below in conjunction with valve gear and its sliding block, advantageous effect part is not repeated It discusses.

Please referring to Fig.1-2, Fig. 1, to be a kind of valve gear of embodiment provided by the present invention flow to the in refrigerant from first interface Diagrammatic cross-section when two interfaces；Fig. 2 is that a kind of valve gear of embodiment provided by the present invention is flowed in refrigerant from second interface Diagrammatic cross-section when first interface.

In the embodiment, valve gear includes driving part and valve part 20；Wherein, valve part 20 has the first plane 221a and the second plane 221b, the first plane 221a are equipped with the first valve port 222a, the second plane 221b equipped with the second valve port 222b, the first valve port 222a are connected to first interface 223a, and the second valve port 222b is connected to second interface 223b；First interface 223a and second interface 223b is connect with the first take over 70a and the second take over 70b respectively.

The valve gear further includes slider part comprising two sliding blocks 31, respectively with the first plane 221a and the second plane 221b coordinates.

Two sliding blocks 31 all have around respective center of rotation flow path portion circumferentially and closure part, wherein flow path portion is connected to The top side and bottom side of sliding block 31, that is to say, that flow path portion penetrates through sliding block 31；In this way, the flow path portion of sliding block 31 and valve part 20 Valve chamber connection, and circumferentially, the circulation area of flow path portion is different.

Two sliding blocks 31 are coordinated by the first elastic component 40a, the second elastic component 40b with corresponding plane respectively, specifically, bullet Property part have sliding block 31 be pressed against to the pretightning force of corresponding flat.

Sliding block 31 has the interconnecting piece coordinated with driving part, under the driving of driving part, sliding block 31 can be opposite Corresponding Plane Rotation so that its flow path portion is connected to the valve port of corresponding plane, or makes closure part close corresponding plane Valve port.

For convenience of description, hereafter in the matching relationship for being related to corresponding component, two sliding blocks 31 are known as the first sliding block 31a With the second sliding block 31b, the first elastic component 40a and the second elastic component 40b, the first plane 221a and the second plane are corresponded to respectively 221b。

The course of work of the valve gear is as follows：

As shown in Fig. 2, when refrigerant is flowed into from the first take over 70a, refrigerant can give the first sliding block 31a by the first valve port 222a First sliding block 31a is pushed away the first plane 221a by one upward thrust to overcome the pretightning force of the first elastic component 40a, to Refrigerant can flow into valve chamber by the first valve port 222a, at this point, the effect of refrigerant and the preload of the second elastic component 40b in valve chamber Under force effect, the second sliding block 31b is pressed against the second plane 221b, and by the driving of driving part, the second sliding block 31b is with respect to second Plane 221b rotations, so that the flow path portion of the second sliding block 31b is connected to the second valve port 222b, to make refrigerant through the second valve port 222b is from the second take over 70b outflows, or the closure part of the second sliding block 31b is made to close the second valve port 222b.

Because the circulation area of flow path portion circumferentially is different, its flow path portion can be made by the rotation of the second sliding block 31b Different parts be connected to the second valve port 222b, cold medium flux is adjusted with this.

As shown in figure 3, when refrigerant is flowed into from the second take over 70b, refrigerant can give the second sliding block 31b by the second valve port 222b Second sliding block 31b is pushed away the second plane 221b by one upward thrust to overcome the pretightning force of the second elastic component 40b, to Refrigerant can flow into valve chamber by the second valve port 222b, at this point, in the effect of valve chamber refrigerant and the pretightning force of the first elastic component 40a Under effect, the first sliding block 31a is pressed against the first plane 221a, and by the driving of driving part, the first sliding block 31a is flat with respect to first Face 221a is rotated, so that the flow path portion of the first sliding block 31a is connected to the first valve port 222a, to make refrigerant through the first valve port 222a From the first take over 70a outflows, or the closure part of the first sliding block 31a is made to close the first valve port 222a.

Similarly, since the circulation area of flow path portion circumferentially is different, so the rotation by the first sliding block 31a can make it The different parts of flow path portion are connected to the first valve port 222a, and cold medium flux is adjusted with this.

It is appreciated that sliding block 31 can relatively corresponding plane move up and down, wherein refrigerant pressure and elastic component elasticity Under the difference effect of power, sliding block 31 can move up and be detached from corresponding plane；After refrigerant pressure disappearance, in elastic component bullet Property power under the action of, sliding block 31 can move down and with corresponding plane abut.

As above, the sliding block 31 of the valve gear, for realizing the flow-rate adjustment of valve gear, specifically, in sliding block 31 upper edge week To flow path portion and closure part is provided with, flow path portion is connected to the top side and bottom side of sliding block 31, and sliding block 31 is equipped with the drive with valve gear The interconnecting piece of dynamic component cooperation, so that sliding block being capable of being rotated by driving part；When work, sliding block 31 is made by rotation Its flow path portion is connected to the valve port of valve gear, to the inlet and outlet of communication valve means, or its closure part is made to close valve dress The valve port set, to separate the inlet and outlet of valve gear, in this way, by sliding block 31 rotation realize valve gear import with go out The connection or partition of mouth, make valve gear have the function of fully closed；Meanwhile the circulation area of the flow path portion of sliding block 31 circumferentially is not Together, in this way by the rotation of sliding block 31, the different location for making flow path portion is connected to the valve port of valve gear, and flow is realized with this It adjusts, it, can be according to the smaller of system requirements setting, so logical because the circulation area of flow path portion circumferentially is easy to set up and adjusts The setting for crossing the circulation area of 31 flow path portion of sliding block is easy to control flow deviation in smaller range, such as within 5%, with full The flow control accuracy requirement of sufficient refrigerator and similar small refrigeration systems.

Above-mentioned valve gear provided in this embodiment applies two 31 structures of sliding block, while being arranged on valve part 20 With two sliding blocks, 31 matched two planes with valve port, one of sliding block 31 is controlled by elastic component and refrigerant pressure It is detached from plane, another sliding block 31 adjusts flow, forward and reverse traffic organising is realized with this, and forward and reverse flow direction adjusts difference Realized by two sliding blocks 31, in this manner it is possible to realized by the different designs to two sliding blocks, 31 upper runner portion it is forward and reverse not Same metering characteristics；Furthermore the adjusting of flow is realized by sliding block 31 and the rotation relative to plane, can be realized double To fully closed, and the phenomenon that while can avoid fully closed is stuck；Finally, the precision of the circulation area of the flow path portion of sliding block 31 circumferentially is easy Ensure, facilitates by the control of flow system flow deviation in smaller range, the flow control accuracy to meet different refrigeration systems is wanted It asks.

Please also refer to Fig. 3-6, Fig. 3 is a kind of structural representation of angle of sliding block of first embodiment provided by the present invention Figure；Fig. 4 is the structural schematic diagram of the sliding block another kind angle of first embodiment provided by the present invention；Fig. 5 is sliding block shown in Fig. 3 Vertical view；Fig. 6 is the upward view of sliding block shown in Fig. 3.

In the embodiment, the flow path portion of sliding block 31 includes a recirculation hole 311 and arc-shaped variable cross-section slot 312, wherein Recirculation hole 311 runs through sliding block 31, and variable cross-section slot 312 is opened in the bottom surface of sliding block 31 and the plane cooperation of valve part 20, circulation Hole 311 is connected to variable cross-section slot 312, in this way, recirculation hole 311 is connected to valve chamber and variable cross-section slot 312；In this way, where flow path portion The position that slot and hole is not arranged in circumferential direction forms the closure part for being used for close port.

It is appreciated that the size of recirculation hole 311 and the maximum flow area of variable cross-section slot 312 determine that the sliding block 31 can Adjust the maximum value of cold medium flux.Specifically, when the circulation area of recirculation hole 311 is less than the maximum flow face of variable cross-section slot 312 When product, the cold medium flux maximum value of the sliding block 31 control is the circulation area of recirculation hole 311；When the circulation area of recirculation hole 311 More than variable cross-section slot 312 maximum flow area when, the sliding block 31 control cold medium flux maximum value be variable cross-section slot 312 most Books circulation area.

When specific setting, the circulation area of variable cross-section slot 312 is circumferentially incremented by successively, in this way, sliding block 31 is in one direction During rotation, flow gradually increases or reduces, convenient to operate in practice.

Preferably, the circulation area of recirculation hole 311 is not less than the maximum flow area of variable cross-section slot 312, and makes recirculation hole 311 are located at maximum one end of circulation area of variable cross-section slot 312, are more convenient for controlling flow in this way.

Specifically, the side cell wall of variable cross-section slot 312 is designed in circular arc line, and other side cell wall is set in Archimedes spiral Meter, it is easy to process, certainly, the both sides cell wall of variable cross-section slot 312 can be in Archimedes spiral design or other rules or Irregular Curve Design.

In addition, can also be in practice continuous arc-shaped continuous variable cross-section through-hole knot by the structure design of flow path portion Structure.

Please also refer to Fig. 7-16, Fig. 7 is valve casing, valve seat in specific embodiment, takes over and the structural schematic diagram of central shaft； Fig. 8 is the diagrammatic cross-section of structure shown in Fig. 7；Fig. 9 is the structural schematic diagram of valve casing in Fig. 7；Figure 10 is the vertical view of valve casing in Fig. 9 Figure；Figure 11 is the structural schematic diagram of valve seat in Fig. 7；Figure 12 is the vertical view of valve seat in Figure 11；Figure 13 be Figure 12 in A-A to cut open Face schematic diagram；Figure 14 is the structural schematic diagram of valve deck in specific embodiment；Figure 15 is the upward view of valve deck in Figure 14；Figure 16 is figure The diagrammatic cross-section of valve deck in 14.

In specific scheme, valve part 20 includes valve casing 21, is fixedly arranged on two valve seats 22 of 21 bottom of valve casing and embeds Valve deck 23 in 21 upper end of valve casing.

Specifically, the top surface of the first valve seat 22a forms the first plane 221a with the first sliding block 31a cooperations, the second valve seat The top surface of 22b forms the second plane 221b with the second sliding block 31b cooperations.

21 inner wall of valve casing, 22 inner wall of valve seat and 23 inner wall of valve deck are enclosed valve chamber, it is clear that two sliding blocks 31 are located at the valve chamber It is interior, when specific setting, there is pre-determined distance between sliding block 31 and valve deck 23, respective planes are detached to moving up to be provided to sliding block 31 Dynamic space, elastic component are arranged between sliding block 31 and valve deck 23.

Wherein, valve deck 23 is equipped with two shafts, i.e. first rotating shaft 231a and the second shaft 231b, is plugged in the first sliding block respectively 31a and the second sliding block 31b, to limit the center of rotation of two sliding blocks 31, anti-limited slip block 31 deviates corresponding plane and can not make stream Road portion is connected to valve port.

In specific scheme, in order to limit the relative position of valve deck 23 and valve casing 21, valve deck 23 is additionally provided with leg section 233, The leg section 233 is abutted with the inner bottom wall of valve casing 21.It should be appreciated that the setting of leg section 233 should not influence the dress of sliding block 31 Match and motion space.

Specifically, leg section 233 is along the arcuation protrusion that the inner peripheral wall of valve deck 23 extends downwardly, more specifically, supporting leg It is there are two portion 233 is set and symmetrical, to provide balanced support to valve deck 23.

Further, it is equipped with blind hole 224 at the top of valve seat 22, the shaft of valve deck 23 passes through corresponding sliding block 31 is slotting to exist admittedly In the blind hole 224 of corresponding valve seat 22, in this way, the relative position of sliding block 31 and valve seat 22 on the one hand can be more accurately controlled, it is another Aspect can also be relatively fixed valve deck 23 and valve seat 22.

In the embodiment, valve casing 21 and two valve seats 22 design for separate structure, can specifically be fixed by welding manner, easy Reliably.

Specifically, it is opened up on the bottom of valve casing 21 there are two mounting hole 211 compatible with valve seat 22, valve seat 22 is solid embedding In corresponding mounting hole 211, more specifically, when assembly, 22 top surface of valve seat is set to be slightly above the inner bottom wall of valve casing 21, so that sliding block The rotation of 31 opposite valve seat, 22 top surface is more smooth.

In order to limit the relative position of valve casing 21 and valve seat 22, limited step can be set at the cooperation of the two；Diagram side In case, step surface 225 upward is formed in the upper end of valve seat 22, in this way, when assembly, the top of valve seat 22 is embedded in valve casing 21 In mounting hole 211, the step surface 225 of valve seat 22 is abutted with the bottom surface of valve casing 21, with the relative position of both limitations.

It should be appreciated that when actual setting, it is also feasible that valve casing 21 and valve seat 22, which are set as integral structure,；It may be noted that It is, it is illustrated that in scheme, the structure of two valve seats 22 is identical, easy to process and assembly, certainly, and when actual setting, the knot of two valve seats 22 The not exactly the same design of structure is also feasible, as long as disclosure satisfy that aforementioned related request.

In specific scheme, the top of sliding block 31 is equipped with cavity 313, in this way, between 21 inner bottom wall of valve deck 23 and valve casing Distance relatively small can design, and can shorten axial dimension, make the more compact structure of valve gear.

On this basis, in order to make sliding block 31 and the shaft of valve deck 23 that there is certain length of fit, in the recessed of sliding block 31 The middle part of chamber 313 is additionally provided with canister portion 316, in this way, the cavity 313 of sliding block 31 actually cavity configuration in a ring.

Elastic component can specifically be set as spring, be coated at canister portion 316, both ends respectively with the bottom surface of valve deck 23 and cavity 313 Bottom of chamber face abuts.

The valve gear further includes rotation stop component, to limit sliding block 31 slewing area and sliding block 31 and valve seat 22 it is flat The initial relative position in face, in order to product debugging and application when benchmark determination.

In specific scheme, rotation stop component includes being fixedly arranged on the boss 232 of 23 inner wall of valve deck and being fixedly arranged on the convex of sliding block 31 Portion 314, it is clear that 23 inner wall of valve deck is set there are two boss 232, to coordinate respectively with the protrusion of two sliding blocks 31 314.

The protrusion 314 of sliding block 31 and corresponding boss 232 can concrete configuration at：

Protrusion 314 and the side of boss 232 are in the state that abuts, the closure part close port of sliding block 31, in 31 turns of sliding block During dynamic, one end of variable cross-section slot 312 is connected to valve port successively to the other end, and in rotational direction, variable cross-section slot it is another In the state that end is connected to valve port, protrusion 314 is abutted with the other side of boss 232.

It is the structural schematic diagram of magnet rotor and rotating wheel in specific embodiment please also refer to Figure 17-20, Figure 17；Figure 18 is The diagrammatic cross-section of structure shown in Figure 17；Figure 19 is the structural schematic diagram of magnet rotor in Figure 17；Figure 20 is rotating wheel in Figure 17 Structural schematic diagram.

Wherein, there is external-toothing 121, two sliding blocks 31 to all have the external tooth engaged with external-toothing 121 for the lower end of rotating wheel 12 Wheel portion 315.

It when work, is rotated by external coil drive magnet rotor 11, drives rotating wheel 12 to rotate, pass through external-toothing 121 With the engaged transmission of outer gear portion 315, two sliding blocks 31 rotate synchronously.

Obviously, in order to enable the external-toothing 121 of rotating wheel 12 to be engaged with the outer gear portion 315 of sliding block 31, rotating wheel 12 Across valve deck 23, its external-toothing 121 is made to be located in valve chamber.

The structure design of the driving part is simple and reliable, while also making the structure of valve gear compacter.

When specific setting, the center of rotation of the center of rotation and rotating wheel 12 that make two sliding blocks 31 is located on the same line, It is arranged symmetrically that is, two sliding blocks 31 relatively rotate wheel 12, can refer to Figure 21 understandings, it illustrates two sliding blocks 31 and rotating wheels The upward view of 12 engagement cooperations, so that the structure of entire valve part 20 is more symmetrical, and when operation more stablizes.

In specific scheme, magnet rotor 11 includes barrel portion 111 and bottom wall part 112, wherein bottom wall part 112 has jack 1121, the middle part of rotating wheel 12 has the annular groove 122 coordinated with jack 1121, has between jack 1121 and annular groove 122 Position limiting structure rotates to prevent rotation stop driving wheel 12 relative to magnet rotor 11.

Wherein, for position limiting structure there are many realization method, a kind of relatively simple mode is to pass through jack 1121 and annular groove 122 shape is realized.

Specifically, jack 1121 at least has there are one planar section, and the slot bottom of annular groove 122 has the one of planar section cooperation A planar section, after rotating wheel 12 is plugged in magnet rotor 11, in jack 1121, the planar section of the two is affixed 122 inlay card of annular groove It closes, can both limit the relative position of rotating wheel 12 and magnet rotor 11 in this way.

More specifically, jack 1121 can be polygonal hole structure, slot bottom cross sectional shape and the jack 1121 of annular groove 122 Shape is consistent.

In specific scheme, the bottom wall part 112 of magnet rotor 11 is equipped with balance hole 1122, to keep 11 upper and lower chamber of magnet rotor Pressure balance.In illustrated scheme, balance hole 1122 is equipped with multiple, and is uniformly distributed around jack 1121, in practice can be according to need Number and the arrangement of balance hole 1122 is arranged.

The valve gear further includes the shell 50 and central shaft 60 for being coated at magnet rotor 11, wherein the lower end of shell 50 and valve Body component 20 is affixed.

Specifically, shell 50 and the upper end of valve casing 21 are affixed, can be in the connection of the two in order to limit the relative position of the two Place's setting step structure.

Wherein, there is rotating wheel 12 central through hole 123, central shaft 123 to pass through central through hole 123, one end of central shaft 123 Affixed with shell 50, the valve casing 21 of the other end and valve part 20 is affixed, can limit the center of rotation of rotating wheel 12 in this way, really Protect the cooperation of rotating wheel 12 and two sliding blocks 31.

In the various embodiments described above, the structure of the flow path portion of sliding block 31 is the structure of recirculation hole 311 and variable cross-section slot 312, real When border is arranged, the flow path portion of sliding block 31 is alternatively other structures.

2-25 is please referred to Fig.2, Figure 22 is a kind of structural representation of angle of the sliding block of second embodiment provided by the present invention Figure；Figure 23 is the structural schematic diagram of the sliding block another kind angle of second embodiment provided by the present invention；Figure 24 is sliding shown in Figure 22 The vertical view of block；Figure 25 is the upward view of sliding block shown in Figure 22.

In the embodiment, the flow path portion of sliding block 31 ' is specially the runner hole 311 ' in multiple and different apertures, specifically, multiple Runner hole 311 ' is circumferentially arranged around the center of rotation of sliding block 31 ' in arcuation, in this way, between two runner holes 311 ' of outer end Position forms the closure part of sliding block 31 '.

In illustrated scheme, the flow path portion of sliding block 31 ' sets that there are five runner holes 311 ', and the aperture edge in five runner holes 311 ' Circumferential incremented by successively, the angle between adjacent two runner hole 311 ' is equal, that is to say, that the arc section in arrangement runner hole 311 ' On, multiple runner holes 311 ' are uniformly distributed.After designing in this way, sliding block 31 ' often turns over identical angle, i.e., is carried out to flow primary Adjustment, convenient for the operation to valve gear.

It is appreciated that in practice, when arrangement, the aperture in each runner hole 311 ' can be irregular, in addition, in arrangement runner hole On 311 ' arc section, multiple runner holes 311 ' can arrange uneven.Only in contrast, regular, uniform as illustrated Arrangement, the control being more convenient for product.

Further, as shown in figure 23, multiple inner groovies 312 ' are further opened in the bottom surface of sliding block 31 ', respectively with it is multiple The position in runner hole 311 ' corresponds to, and the size of each inner groovy 312 ' is all higher than corresponding runner hole 311 '.

As above after design, when 31 ' opposite valve seat component 20 of sliding block rotates, end and the valve seat 22 in runner hole 311 ' are avoided Plane direct friction, rotation abrasion that can be between 22 plane of 31 ' bottom surface of anti-limited slip block and valve seat block runner hole 311 ', can be true Protect the reliability of product flow control.

Specifically, it is easy to process, the size of each inner groovy 312 ' can be unified, in scheme shown in Figure 25, each inner groovy 312 ' be the consistent counter bore structure in aperture.It should be appreciated that the shape of inner groovy 312 ' is unlimited, as long as runner hole 311 ' can be avoided End and 22 plane direct friction of valve seat.

In addition, above-mentioned sliding block can be also used for the valve gear of other structures, it is not limited to the double-slider structure to two-way circulate Valve gear.

Please refer to Fig.2 the diagrammatic cross-section for the valve gear that 6, Figure 26 is another embodiment provided by the present invention.

In the embodiment, valve gear is set there are one sliding block 31 ", further includes driving part and valve part 20 ', wherein valve The top surface of body component 20 ' is equipped with the valve port 203 ' of connection import 201 ' and outlet 202 '；The bottom surface of sliding block 31 " and valve part 20 ' top surface fitting；

Driving part can drive sliding block 31 " to be rotated relative to valve part 20 ', so that the flow path portion communicating valve of sliding block 31 " Mouth 203 ', or make the closure part close port 203 ' of sliding block 31 ".

The sliding block 31 " and the slide block structure introduced in previous embodiment are substantially similar, and difference lies in because the valve gear is only set There are one sliding blocks 31 ", so the interconnecting piece of the sliding block 31 " and driving part could be provided as other structures.

In the embodiment, driving part includes magnet rotor 11 ' and inserts in the shaft 12 ' of magnet rotor 11 ' admittedly, magnet rotor 11 ' It is driven and is rotated by external coil, shaft 12 ' is driven to rotate together, it, can be by sliding block 31 " and driving part to simplify connection structure Rotation section be fixed together；Specifically, keyway can be set on sliding block 31 ", be arranged on magnet rotor 11 ' and match with the keyway When assembly, the key portion of magnet rotor 11 ' is embedded in the keyway of sliding block 31 " admittedly for the key portion of conjunction, and the two relative position is fixed, to Magnet rotor 11 ' can be rotated together with movable slider 31 ".

As shown in figure 26, specifically, shaft 12 ' passes through sliding block 31 " and 20 ' clearance fit of valve part, can determine in this way The relative position of position sliding block 31 " and valve part 20 ', avoids sliding block 31 " from deviating.

In addition, preloading spring 40 ' is additionally provided between magnet rotor 11 ' and sliding block 31 ", so that sliding block 31 " is pressed against valve The top surface of body component 20 '.

When work, being rotated by magnet rotor 11 ', band movable slider 31 " rotates, its flow path portion is made to be connected to valve port 203 ', from And it is connected to import 201 ' and outlet 202 ', or make its closure part close port 203 ', to block import 201 ' and outlet 202 '； The flow-rate adjustment of wherein refrigerant is also that realization is connected to valve port 203 ' by the different parts of flow path portion.

Valve gear provided by the present invention and its sliding block are described in detail above.It is used herein specifically a Principle and implementation of the present invention are described for example, and the explanation of above example is only intended to help to understand the present invention's Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention Protection domain in.

Claims

1. the sliding block of valve gear, which is characterized in that the sliding block, which has, rotates around it center flow path portion circumferentially and closure Portion；The flow path portion is connected to the top side and bottom side of the sliding block, and circumferentially, and the circulation area of the flow path portion is different；It is described Sliding block also has the interconnecting piece coordinated with the driving part of the valve gear, so that the sliding block can be in the driving part It is rotated by.

2. sliding block according to claim 1, which is characterized in that the flow path portion includes the not exactly the same stream in multiple apertures Road hole, and multiple runner pore size distributions are in arcuation.

3. sliding block according to claim 2, which is characterized in that the bottom surface of the sliding block have multiple inner groovies, respectively with The position in multiple runner holes corresponds to, and the size of each inner groovy is all higher than the corresponding runner hole.

4. sliding block according to claim 2, which is characterized in that the aperture in multiple runner holes is circumferentially incremented by successively.

5. sliding block according to claim 1, which is characterized in that the flow path portion is logical for arc-shaped continuous variable cross-section Hole.

6. sliding block according to claim 1, which is characterized in that the flow path portion includes a recirculation hole and arc-shaped company Continuous variable cross-section slot, the variable cross-section slot be set to the sliding block bottom surface, the recirculation hole run through the sliding block, and with the change Section slot is connected to.

7. sliding block according to claim 6, which is characterized in that the circulation area of the recirculation hole is not less than the variable cross-section The maximum flow area of slot.

8. sliding block according to claim 7, which is characterized in that the circulation area of the variable cross-section slot is circumferentially passed successively Increase, and the recirculation hole is located at maximum one end of circulation area of the variable cross-section slot.

9. sliding block according to claim 8, which is characterized in that the side cell wall of the variable cross-section slot is in circular arc line, another Side channel wall is in Archimedes spiral；Alternatively, the both sides cell wall of the variable cross-section slot is in Archimedes spiral.

10. valve gear, including driving part and valve part, which is characterized in that further include two any one of such as claim 1-9 The sliding block；

The valve part includes two valve seats with the two sliding block cooperations respectively, and the top surface of two valve seats is equipped with a valve Mouthful, two valve ports are respectively communicated with two interfaces；

Further include two elastic components, for two sliding blocks to be pressed against the two valve seat top surfaces respectively；The sliding block can also phase The valve seat is moved up and down；

The driving part can drive the sliding block to be rotated relative to the corresponding valve seat, so that the connection of its flow path portion is corresponding The valve port of the valve seat, or the valve port that makes its closure part close the corresponding valve seat.

11. valve gear according to claim 10, which is characterized in that the driving part includes magnet rotor and is fixedly arranged on institute The rotating wheel of magnet rotor is stated, the rotating wheel has external-toothing；Two sliding blocks all have the external tooth engaged with the external-toothing Wheel portion；The magnet rotor can drive the rotating wheel to rotate, to drive two sliding blocks to rotate synchronously；The outer gear portion shape At the interconnecting piece.

12. valve gear, including driving part and valve part, which is characterized in that further include as described in claim any one of 1-9 Sliding block；

The top surface of the valve part is equipped with the valve port of connection inlet and outlet；The bottom surface of the sliding block and the valve part Top surface is bonded；

The driving part can drive the sliding block to be rotated relative to the valve part, so that the flow path portion is connected to the valve Mouthful, or the closure part is made to close the valve port.