CN108799534B

CN108799534B - Valve gear

Info

Publication number: CN108799534B
Application number: CN201710292756.1A
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: 2019-09-27
Anticipated expiration: 2037-04-28
Also published as: CN108799534A

Abstract

The invention discloses a kind of valve gear, including driving part and valve base part, the valve base part has inlet and outlet, and the import is connected to valve chamber；It further include the sliding block supported by the valve base part, the bottom surface of the sliding block is bonded with the top surface of the valve base part；The sliding block, which has, rotates around it center flow path portion circumferentially and closure part；Circumferentially, the circulation area of the flow path portion is different；The flow path portion is connected to the valve chamber；The driving part can drive the sliding block to rotate relative to the valve base part, so that the flow path portion and the outlet, or the closure part is made to close the outlet；Further include filter element, is used to filter the refrigerant for flowing into the flow path portion.The valve gear is improved by the structure to flow control division, avoids the stuck phenomenon of full off state, and the flow deviation of the valve gear is controlled within smaller range, so as to meet the flow accuracy demand for control of refrigerator and similar small refrigeration systems.

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 adjustment of refrigerator Energy Efficiency Standard test request, the efficiency of refrigerator is required to improve, the throttle of current refrigerator Divide and mostly use capillary-compensated greatly, since capillary does not have the function of flow adjusting, under difficult environmental conditions, refrigeration system Optimal operating condition cannot be reached, be affected to efficiency.

In the prior art, existing will be applied to electronic expansion valve for air conditioner in refrigerator, to realize the function of flow adjusting Can, referring to FIG. 1, Fig. 1 is the diagrammatic cross-section of existing electronic expansion valve for air conditioner.

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.

Within air-conditioning systems, electric expansion valve uses closed-loop control, is linear discharge characteristic, in certain pulses operating point Flow deviation influence in systems it is relatively small, flow deviation allows to reach 20%；In addition, in air-conditioning system, compressor It does not shut down, when reaching control equalized temperature, using extremely low frequency run compressor, such as the frequency of 10Hz, so, idle call Electric expansion valve do not need the function of all closing.

But refrigeration for refrigerator amount is small, correspondingly, adjustable range is also small, electric expansion valve shown in FIG. 1 using valve port 4 ' and Needle 5 ' with taper is come when adjusting flow, flow control accuracy deviation will reach 20%, considerably beyond the flow of refrigerator requirement Control precision.

In addition, refrigerator is intermittent type refrigerating device, it is solidifying to close refrigeration for the compressor shutdown after reaching equalized temperature after shutdown Device refrigerant flows into evaporator and not only contributes to energy conservation, moreover it is possible to guarantee more accurate temperature control, so existing electronic expansion Valve is unable to satisfy the interior leakage demand of refrigerator system, i.e., needle 5 ' can be made all to close valve port 4 ', valve port 4 ' and needle 5 ' Also it is prone to wear influence flow control accuracy, and is easy stuck.

It is appreciated that for other small refrigeration systems, there is also similar problems other than refrigerator.

Therefore, a kind of function of being not only able to achieve flow adjusting how is designed, and can satisfy refrigerator and similar simultaneously The valve gear of the flow accuracy demand for control of small refrigeration systems is that the technology that those skilled in the art need to solve at present is asked Topic.

Summary of the invention

The object of the present invention is to provide a kind of valve gear, its flow deviation is enable to control within smaller range, thus It can satisfy the flow accuracy demand for control of refrigerator and similar small refrigeration systems.

In order to solve the above technical problems, the present invention provides a kind of valve gear, including driving part and valve base part, the valve Base member has inlet and outlet, and the import is connected to valve chamber；

It further include the sliding block supported by the valve base part, the top surface patch of the bottom surface of the sliding block and the valve base part It closes；

The sliding block, which has, rotates around it center flow path portion circumferentially and closure part；Circumferentially, the flow path portion Circulation area is different；The flow path portion is connected to the valve chamber；

The driving part can drive the sliding block to rotate relative to the valve base part so that the flow path portion with it is described Outlet, or the closure part is made to close the outlet；

Further include filter element, is used to filter the refrigerant for flowing into the flow path portion.

Valve gear provided by the invention has abandoned the needle structure of electronic expansion valve for air conditioner in the prior art, will be used for Adjust flow component realized using slide block structure, circumferentially arranged flow path portion and closure part on sliding block, wherein flow path portion It is connected to valve chamber, the import of valve base part is also connected to valve chamber, drives sliding block rotation to make flow path portion and valve by driving part The outlet of base member to make import and outlet, or makes closure part close outlet, to make import and outlet quilt Partition has valve gear in this way, realizing the connection or partition of import and outlet by the rotation of sliding block opposite valve seat component The function of all closing, and the case where be not in stuck failure in complete close；In addition, circumferentially, the circulation area of flow path portion Difference makes the different location and valve seat outlet in sliding block upper runner portion, realizes flow with this in this way, being rotated by sliding block Adjust because the circulation area of flow path portion circumferentially it is easy to set up and adjust, can according to system requirements be arranged it is smaller, so It is easy flow deviation control by the setting of the circulation area of sliding block flow path portion, it can Meet the flow control accuracy requirement of refrigerator and similar small refrigeration systems.

In addition, the valve gear is additionally provided with filter element to filter the refrigerant for flowing into flow path portion, can prevent in refrigerant Impurity or the lesser flow path portion of foreign matters from being blocked circulation area, it is ensured that the reliability of product.

The top of the sliding block is equipped with cavity, and the filter element is in the cavity, and the bottom with the cavity Wall has preset distance, and the flow path portion is connected to the accommodating chamber formed between the filter element and the cavity.

The medium position of the cavity bottom is additionally provided with the supporting table for supporting the filter element, and the accommodating chamber is specially The annular chamber that the bottom wall of the filter element, the side wall of the cavity and bottom wall and the periphery wall of the supporting table are enclosed.

The filter element is sintered by tin bronze ball or stainless steel ball and is formed；Or the filter element is by multilayer stainless steel Screen cloth is made.

The mesh number of the filter element is greater than 100 mesh.

The driving part includes rotor part, and the rotor part includes magnet and the shaft for being plugged in the magnet, The lower end of the shaft is successively set with the filter element and the sliding block, and the rotor part is able to drive the cunning when rotating Block rotation.

Clamping structure is additionally provided between the magnet and the sliding block.

The lower end of the magnet has the key portion of protrusion, and the sliding block has the keyway cooperated with the key portion, the key Portion and the keyway form the clamping structure.

It further include the shell for being coated at the magnet, the bottom of the shell is fixed with the valve base part；The magnet Including canister portion and partition board portion, the inner cavity of cartridge is divided into epicoele and cavity of resorption by the partition board portion, wherein the week of the cavity of resorption Wall, the shell and the valve base part are enclosed the valve chamber.

It is additionally provided with preloading spring between the filter element and the partition board portion, by the filter element and the sliding block It is pressed in the valve base part.

The partition board portion has more than one balance hole, and the balance hole is connected to the epicoele and the cavity of resorption.

The shaft is also plugged in the valve base part, and the two clearance fit, so that the shaft can be relatively described Valve base part rotation.

It further include stop component, to limit the initial relative position of the sliding block Yu the valve base part.

The stop component includes being fixedly arranged on the first retainer of the valve base part and being set to the driving part Second retainer, the driving part are able to drive second retainer and rotate synchronously with the sliding block；And it is configured to:

Second retainer is in the state that abuts with the side of first retainer, and the closure part closing is described out Mouthful；Second retainer with the sliding block rotate during, the flow path portion from one end to the other end successively with it is described go out Mouthful connection, and in rotational direction, in the state of the other end of the flow path portion and the outlet, second retainer with The other side of first retainer abuts.

First retainer is elastic component.

The flow path portion is 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 the position of multiple runner holes respectively, and each described The size of inner groovy is all larger than the corresponding runner hole.

The flow path portion is arc-shaped continuous variable section channel.

Detailed description of the invention

Fig. 1 is the diagrammatic cross-section of existing electronic expansion valve for air conditioner；

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

Fig. 3 is a kind of structural schematic diagram of angle of sliding block shown in Fig. 2；

Fig. 4 is the structural schematic diagram of sliding block another kind angle shown in Fig. 2；

Fig. 5 is the top view of sliding block shown in Fig. 2；

Fig. 6 be Fig. 5 in A-A to diagrammatic cross-section；

Fig. 7 is the top view that the sliding block of filter element is equipped in specific embodiment；

Fig. 8 is the diagrammatic cross-section of B-B direction in Fig. 7；

Fig. 9 is the structural schematic diagram of valve base part shown in Fig. 2；

Figure 10 is the top view of valve base part shown in Fig. 9；

Figure 11 be Figure 10 in C-C to diagrammatic cross-section；

Figure 12 is the structural schematic diagram of rotor part shown in Fig. 2；

Figure 13 is the diagrammatic cross-section of rotor part shown in Fig. 2.

In Fig. 1:

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

In Fig. 2-13:

Rotor part 10, magnet 11, canister portion 111, partition board portion 112, balance hole 1121, key portion 113, the second retainer 114, Shaft 12, axle sleeve 121；

Valve base part 20, fulcrum bearing 21, valve body 22, import 221, outlet 222, valve port 223, communication port 224, axis hole 225；

Sliding block 30, runner hole 31 (31a, 31b, 31c, 31d, 31e), cavity 32, supporting table 33, keyway 34, inner groovy 35, Preloading spring 36；

Filter element 40；

First retainer 50, latch 51；

Shell 60, inlet tube 70, outlet 80, valve chamber R1, accommodating chamber R2.

Specific embodiment

Core of the invention is to provide a kind of valve gear, and the flow deviation of the valve gear can control in smaller range, So as to meet the flow accuracy demand for control of refrigerator and similar small refrigeration systems.

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.

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

In the embodiment, valve gear includes driving part and valve base part 20, wherein valve base part 20 has import 221 With outlet 222, import 221 is connected to the valve chamber R1 of valve gear.

The valve gear further includes the sliding block 30 supported by valve base part 20, the bottom surface of sliding block 30 and the top surface of valve base part 20 Fitting.

The sliding block 30, which has, rotates around it center flow path portion circumferentially and closure part, wherein circumferentially, flow path portion Circulation area is different, and flow path portion is connected to valve chamber R1.

Driving part can drive 30 opposite valve seat component 20 of sliding block to rotate, so that flow path portion is connected to outlet 222, thus It is connected to import 221 and outlet 222, or closure part is made to close outlet 222, to separate import 221 and outlet 222.

It is appreciated that distance of the flow path portion away from 30 center of rotation of sliding block, flow path portion when sliding block 30 should be enabled to rotate It is connected to outlet 222.

As above, which has abandoned the needle structure of electronic expansion valve for air conditioner in the prior art, will be used to adjust stream The component of amount realized using slide block structure, circumferentially arranged flow path portion and closure part on sliding block 30, wherein flow path portion and valve Chamber R1 connection, the import 221 of valve base part 20 are also connected to valve chamber R1, drive the rotation of sliding block 30 to make runner by driving part Portion is connected to the outlet 222 of valve base part 20, so that import 221 be made to be connected to outlet 222, or closure part is made to close outlet 222, so that import 221 be made 222 to be separated with outlet, in this way, realized by the rotation of 30 opposite valve seat component 20 of sliding block into The connection or partition of mouth 221 and outlet 222, make valve gear have the function of all closing, and are not in stuck in complete close The case where failure.

In addition, circumferentially, the circulation area of flow path portion is different, in this way, rotating by sliding block 30, make 30 upper runner portion of sliding block Different location 222 be connected to outlet, the adjusting of flow is realized with this, because the circulation area of flow path portion circumferentially is easy to set up And adjusting, it can be according to the smaller of system requirements setting, so being easy by the setting of the circulation area of 30 flow path portion of sliding block will Flow deviation controls the flow control that can satisfy refrigerator and similar small refrigeration systems Required precision.

Please also refer to Fig. 3-6, Fig. 3 is a kind of structural schematic diagram of angle of sliding block shown in Fig. 2；Fig. 4 is shown in Fig. 2 The structural schematic diagram of sliding block another kind angle；Fig. 5 is the top view of sliding block shown in Fig. 2；Fig. 6 be Fig. 5 in A-A to section show It is intended to.

In specific embodiment, the flow path portion of sliding block 30 is specially the not exactly the same runner hole 31 in multiple apertures, specifically Ground, multiple runner holes 31 are circumferentially arranged around the center of rotation of sliding block 30 in arcuation, in this way, being located between two runner holes 31 of outer end Position formed sliding block 30 closure part.

In scheme shown in Fig. 4 and Fig. 5, the flow path portion of sliding block 30 is set there are five runner hole 31, with visual angle shown in Fig. 5, Along clockwise direction, five runner holes 31 are followed successively by 31a, 31b, 31c, 31d and 31e.

In illustrated scheme, the aperture of five runner holes 31a, 31b, 31c, 31d and 31e are incremented by successively, and adjacent two runner Angle between hole 31 is equal, that is to say, that on the arc section of arrangement runner hole 31, multiple uniformly arrangements of runner hole 31.This After sample design, sliding block 30 often turns over identical angle, i.e., is once adjusted to flow, convenient for the operation to valve gear.

As above, flow path portion is set as to the structure of multiple runner holes 31, the hole of number and each runner hole 31 to runner hole 31 Diameter is easy to control, convenient for controlling flow, to meet the demand for control of refrigerator and similar small refrigeration systems.Such as a kind of tool In body embodiment, the aperture of runner hole 31a, 31b, 31c, 31d and 31e are successively set as 0.15mm, 0.18mm, 0.21mm, 0.24mm, 0.27mm.

It is appreciated that in practice, when arrangement, the aperture of each runner hole 31 can be irregular, in addition, in arrangement runner hole 31 Arc section on, multiple runner holes 31 can arrange unevenly.Only in contrast, rule, uniformly arrangement as illustrated, more Convenient for the control to product.

Further, with reference to Fig. 4, multiple inner groovies 35 are offered in the bottom surface of sliding block 30, respectively with multiple runner holes 31 Position it is corresponding, and the size of each inner groovy 35 is all larger than corresponding runner hole 31.

As above after design, when 30 opposite valve seat component 20 of sliding block rotates, end and the valve base part of runner hole 31 are avoided 20 direct frictions, can between anti-30 bottom surface of limited slip block and 20 top surface of valve base part rotation abrasion blocking runner hole 31, can be true Protect the reliability of product flow control.

Specifically, to be easy to process, the size of each inner groovy 35 can be unified, and in scheme shown in Fig. 4, each inner groovy 35 is The consistent counter bore structure in aperture.It should be appreciated that the shape of inner groovy 35 is unlimited, as long as can be avoided end and the valve of runner hole 31 20 direct friction of base member.

Please also refer to Fig. 7-8, Fig. 7 is the top view that the sliding block of filter element is equipped in specific embodiment；Fig. 8 is figure The diagrammatic cross-section of B-B direction in 7.

The valve gear is additionally provided with filter element 40, for filtering the refrigerant for flowing through the runner hole 31 of sliding block 30, to avoid stream Road hole 31 influences the service performance of product by foreign matters from being blocked.

Wherein, the filter capacity of filter element 40 can according to the aperture of runner hole 31 in conjunction with other use demands come really It is fixed, by taking the specific aperture value of aforementioned each runner hole 31 as an example, it is known that the pore diameter range of each runner hole 31 0.1mm~0.3mm it Between, so in application, filter element 40 can at least filter out the impurity and foreign matter greater than 0.1mm.When specific setting, filter house The mesh number of part 40 is greater than 100 mesh, to meet basic use demand.

Specifically, filter element 40 can be sintered by tin bronze ball or stainless steel ball and be formed, can also be by multilayer stainless steel Screen cloth is made.

Obviously, for the flow direction of refrigerant, the upstream position of the runner hole 31 of sliding block 30 should be arranged in filter element 40.

In specific scheme, the top of sliding block 30 is equipped with cavity 32, by filter element 40 in the cavity 32, and mistake The bottom wall for filtering component 40 and the cavity 32 has preset distance, in this way, forming accommodating chamber between filter element 40 and cavity 32 R2, filtered refrigerant flow into runner hole 31 by accommodating chamber R2, it is clear that each runner hole 31 should connect with accommodating chamber R2 It is logical.

Preset distance between 32 bottom wall of filter element 40 and cavity can according to need to be arranged.

More specifically, the medium position in 32 bottom of cavity is equipped with the supporting table 33 of support filter element 40, Fig. 3 can refer to Understand with Fig. 6 so that it is convenient to which filter element 40 positions in cavity 32.

As shown in figure 8, aforementioned accommodating chamber R2 is specially the side wall of the bottom wall of filter element 40, cavity 32 in this way after setting And the annular chamber that bottom wall and the periphery wall of supporting table 33 are enclosed.

It should be pointed out that by filter element 40 in sliding block 30, but sliding block 30 is in opposite valve seat in the program When component 20 rotates, filter element 40 can be rotated therewith, and can not also rotate, this will not influence filter element 40 Filtration.

The valve base part provided herein matched with sliding block can understand with reference to Fig. 9-11 together, wherein Fig. 9 is in Fig. 2 The structural schematic diagram of shown valve base part；Figure 10 is the top view of valve base part shown in Fig. 9；Figure 11 be Figure 10 in C-C to cut open Face schematic diagram.

In the embodiment, the bottom of valve base part 20 offer import 221 and outlet 222, respectively with inlet tube 70, go out Mouth pipe 80 connects.

The valve port 223 being connected to outlet 222 is offered at the top of valve base part 20, is opened up in the side of valve base part 20 There is the communication port 224 being connected to import 221, and the communication port 224 is connected to valve chamber R1.

It is appreciated that import 221 is not connected to directly with the runner hole 31 of sliding block 30.

It should be appreciated that the position of the runner hole 31 of sliding block 30 should be with 223 position of valve port after valve base part 20 is as above arranged It is corresponding, so that runner hole 31 can be connected to valve port 223 in 30 rotation process of sliding block, then it is connected to outlet 222.

In this way, refrigerant is flowed into from inlet tube 70, import 221, communication port 224 through valve base part 20 flow into valve chamber R1, then Runner hole 31 is flowed by filter element 40, is flowed out through valve port 223, outlet 222 from outlet 80.

In specific scheme, valve base part 20 includes that fulcrum bearing 21 and fixed valve body 22 thereon, the two fission are set It sets, can fix by welding, it is not only simple but also reliable.

Valve port 223 and communication port 224 are opened on valve body 22, that is to say, that sliding block 30 is directly pasted with valve body 22 It closes, opposite valve seat body 22 rotates.

Specifically, import 221 and outlet 222 can be provided on valve body 22, setting and valve seat in fulcrum bearing 21 The compatible through-hole of body 22, by valve body 22 admittedly in the through-hole of fulcrum bearing 21.

Certainly, import 221 and outlet 222 can be provided in fulcrum bearing 21, and valve body 22 is fixed on fulcrum bearing 21 Top surface, and keep its valve port 223 and communication port 224 corresponding with outlet 222 and 221 position of import respectively.

Certainly, import 221 and outlet 222 a part of can also be arranged on valve body 22, and another part is arranged in fulcrum bearing On 21.

In addition, valve base part 20 also can be set to integral structure, in contrast, separate structure it is easy to process and reduce at This.

It is the structural schematic diagram of rotor part shown in Fig. 2 please also refer to Figure 12-13, Figure 12；Figure 13 is shown in Fig. 2 The diagrammatic cross-section of rotor part.

In the embodiment, the driving part that driving sliding block 30 rotates is motor, specifically includes rotor part 10 and coil part Part.

Wherein, rotor part 10 includes magnet 11 and the shaft 12 for being plugged in magnet 11, and the lower end of shaft 12 is sequentially inserted into Filter element 40 and sliding block 30 when work, drive rotor part 10 to rotate by external coil component, and band movable slider 30 is opposite Valve body 22 rotates.

It is rotated together to make rotor part 10 be able to drive sliding block 30 when rotating, it can be relatively solid with shaft 12 by sliding block 30 It is fixed, for example sliding block 30 and matching for shaft 12 is made to be combined into interference fit.

Certainly, can also be relatively fixed by sliding block 30 and magnet 11, in the present embodiment, it is arranged between magnet 11 and sliding block 30 There is clamping structure, so that sliding block 30 can be rotated together with magnet 11.

Specifically, the lower end of magnet 11 has the key portion 113 of protrusion, is provided on sliding block 30 and the cooperation of key portion 113 Keyway 34 keeps sliding block 30 and magnet 11 relatively fixed by being fixed for key portion 113 and keyway 34.In addition, the key of magnet 11 113 inlay card of portion plays the role of sliding block 30 being pressed in valve body 22, it can be ensured that sliding block 30 to a certain extent in keyway 34 It is bonded with valve body 22, prevents refrigerant from flowing into from the joint place of the two.

The valve gear further includes the shell 60 for being coated at magnet 11, and the bottom of shell 60 and valve base part 20 are fixed, specifically Into the embodiment, the bottom of shell 60 and the fulcrum bearing 21 of valve base part 20 are fixed.

Specifically, the top of fulcrum bearing 21 has step surface upward, in order to the positioning with shell 60.

In specific scheme, magnet 11 includes canister portion 111 and partition board portion 112, wherein partition board portion 112 will be in canister portion 111 Chamber is divided into epicoele and cavity of resorption, fixes in this way, rotor 12 is specifically inserted with partition board portion 112, the top of rotor 12 can connecting bushing 121, the inner roof wall cooperation of axle sleeve 121 and shell 60.

Wherein, the peripheral wall of 11 cavity of resorption of magnet, shell 60 and fulcrum bearing 21 are enclosed valve chamber R1, that is to say, that the program In, the cavity of resorption of magnet 11 is a part of valve chamber R1, can shorten the axial dimension of valve gear in this way, is conducive to its miniaturization.

In specific scheme, preloading spring 36 is equipped between partition board portion 112 and sliding block 30, so that sliding block 30 is tightly attached to valve The top surface of pedestal 22.

In scheme shown in Fig. 1, sliding block 30 be equipped with filter element 40 in the case of, preloading spring 36 really and filter house Part 40 abuts.

In specific scheme, more than one balance hole 1121, the balance hole are additionally provided in the partition board portion 112 of magnet 11 1121, which are connected to epicoeles and cavity of resorption, avoids about 11 vibration of magnet to keep the pressure balance of the upper and lower chamber of magnet 11.

In specific scheme, to ensure that the center of rotation of 30 opposite valve seat component 20 of sliding block does not change, to guarantee to slide In 30 rotation process of block, each runner hole 31 can be connected to outlet 222, and the lower end of shaft 12 is also plugged in valve base part 20, To guarantee the concentricity of 20 three of rotor part 10, sliding block 30 and valve base part.

Specifically, valve body 22 is equipped with the axis hole 225 cooperated with shaft 12, it is clear that shaft 12 is matched with 225 gap of axis hole It closes, so that shaft 12 can be rotated relative to valve base part 20.

The valve gear further includes stop component, to limit the initial relative position of sliding block 30 Yu valve base part 20, is convenient for The determination of benchmark when the debugging and application of product.

In specific scheme, stop component includes being fixedly arranged on the first retainer 50 of valve base part 20 and being set to driving portion Second retainer 114 of part, driving part are able to drive the second retainer 114 and rotate synchronously with sliding block 30；And it is configured to:

Second retainer 114 is in the state that abuts with the side of the first retainer 50, and outlet 222 is closed in closure part；Second During retainer 114 is rotated with sliding block 30, each runner hole 31 is sequentially connected to outlet 222, and in rotational direction, last In the state that a runner hole 31 is connected to outlet 222, the second retainer 114 is abutted with the other side of the first retainer 50.

In specific scheme, the first retainer 50 is elastic component, in this way, the second retainer 114 and its against when there is bullet Property buffering, avoid that abrasion is caused after longtime running to cause position configuration inaccurate.

Specifically, the first retainer 50 can be rubber, be fixed in fulcrum bearing 21 by latch 51, wherein stop The top of pin 51 is provided with anti-dropout boss, in case the first retainer 50 is deviate from.

In the various embodiments described above, the structure of flow path portion is multiple runner holes 31 that distribution is in arcuation, when actual setting, runner Portion can also be other structures, for example be arc-shaped continuous variable section channel, in this way, in the portion in the circumferentially upper not set channel Divide the closure part formed for closing outlet 222.

Specifically, the one side wall of the variable section channel can be circular arc line shape, and another side wall can be Archimedes's spiral shell Wire shaped, certainly, the two side walls of the variable section channel can be in Archimedes spiral shape, or other forms, As long as the circulation area of the channel circumferentially is different.

Valve gear provided by the present invention is described in detail above.Specific case used herein is to the present invention Principle and embodiment be expounded, method and its core of the invention that the above embodiments are only used to help understand Thought.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, may be used also With several improvements and modifications are made to the present invention, these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. valve gear, including driving part and valve base part (20), which is characterized in that the valve base part (20) has import (221) it is connected to outlet (222), the import (221) with valve chamber (R1)；

It further include the sliding block (30) supported by the valve base part (20), the bottom surface of the sliding block (30) and the valve base part (20) top surface fitting；

The sliding block (30), which has, rotates around it center flow path portion circumferentially and closure part；Circumferentially, the flow path portion Circulation area is different；The flow path portion is connected to the valve chamber (R1)；

The driving part can drive the sliding block (30) relative to the valve base part (20) rotate so that the flow path portion with Outlet (222) connection, or the closure part is made to close the outlet (222)；

Further include filter element (40), is used to filter the refrigerant for flowing into the flow path portion；

The top of the sliding block (30) is equipped with cavity (32), and the filter element (40) is interior embedded at the cavity (32), and with The bottom wall of the cavity (32) has a preset distance, the flow path portion be connected to the filter element (40) and the cavity (32) it Between the accommodating chamber (R2) that is formed.

2. valve gear according to claim 1, which is characterized in that the medium position of cavity (32) bottom is additionally provided with branch The supporting table (33) of the filter element (40) is supportted, the accommodating chamber (R2) is specially the bottom wall of the filter element (40), institute The annular chamber that the side wall and bottom wall and the periphery wall of the supporting table (33) for stating cavity (32) are enclosed.

3. valve gear according to claim 1, which is characterized in that the filter element (40) is by tin bronze ball or stainless steel Ball is sintered to be formed；Or the filter element (40) is made of multilayer stainless steel mesh cloth.

4. valve gear according to claim 1, which is characterized in that the mesh number of the filter element (40) is greater than 100 mesh.

5. valve gear according to claim 1-4, which is characterized in that the driving part includes rotor part (10), the rotor part (10) includes magnet (11) and the shaft (12) for being plugged in the magnet (11), the shaft (12) Lower end be successively set with the filter element (40) and the sliding block (30), the rotor part (10) is able to drive institute when rotating State sliding block (30) rotation.

6. valve gear according to claim 5, which is characterized in that also set between the magnet (11) and the sliding block (30) There is clamping structure.

7. valve gear according to claim 6, which is characterized in that the lower end of the magnet (11) has the key portion of protrusion (113), the sliding block (30) has the keyway (34) cooperated with the key portion (113), the key portion (113) and the keyway (34) clamping structure is formed.

8. valve gear according to claim 5, which is characterized in that further include the shell for being coated at the magnet (11) (60), the bottom Yu the valve base part (20) of the shell (60) are fixed；The magnet (11) includes canister portion (111) and partition The inner cavity of cartridge (111) is divided into epicoele and cavity of resorption by portion (112), the partition board portion (112), wherein the cavity of resorption Peripheral wall, the shell (60) and the valve base part (20) are enclosed the valve chamber (R1).

9. valve gear according to claim 8, which is characterized in that the filter element (40) and the partition board portion (112) Between be additionally provided with preloading spring (36), the filter element (40) and the sliding block (30) are pressed in the valve base part (20)。

10. valve gear according to claim 8, which is characterized in that the partition board portion (112) has more than one balance Hole (1121), the balance hole (1121) are connected to the epicoele and the cavity of resorption.

11. valve gear according to claim 5, which is characterized in that the shaft (12) is also plugged in the valve base part (20), and the two clearance fit, so that the shaft (12) can be rotated relative to the valve base part (20).

12. valve gear according to claim 1, which is characterized in that further include stop component, to limit the sliding block (30) with the initial relative position of the valve base part (20).

13. valve gear according to claim 12, which is characterized in that the stop component includes being fixedly arranged on the seat portion The first retainer (50) of part (20) and the second retainer (114) for being set to the driving part, the driving part can Second retainer (114) is driven to rotate synchronously with the sliding block (30)；And it is configured to:

Second retainer (114) is in the state that abuts with the side of first retainer (50), and the closure part is closed The outlet (222)；During second retainer (114) rotates with the sliding block (30), the flow path portion is from one end It is successively connected to the other end with the outlet (222), and in rotational direction, the other end of the flow path portion and the outlet (222) in the state of being connected to, second retainer (114) abuts with the other side of first retainer (50).

14. valve gear according to claim 13, which is characterized in that first retainer (50) is elastic component.

15. -4, the described in any item valve gears of 12-14 according to claim 1, which is characterized in that the flow path portion is multiple holes The not exactly the same runner hole of diameter (31), and multiple runner holes (31) distribution is in arcuation.

16. valve gear according to claim 15, which is characterized in that the bottom surface of the sliding block (30) has multiple inner groovies (35), corresponding with the position of multiple runner holes (31) respectively, and the size of each inner groovy (35) be all larger than it is corresponding The runner hole (31).

17. -4, the described in any item valve gears of 12-14 according to claim 1, which is characterized in that the flow path portion is arc-shaped Continuous variable section channel.