CN201065969Y - Electric switching valve for refrigerator - Google Patents
Electric switching valve for refrigerator Download PDFInfo
- Publication number
- CN201065969Y CN201065969Y CNU2007200412581U CN200720041258U CN201065969Y CN 201065969 Y CN201065969 Y CN 201065969Y CN U2007200412581 U CNU2007200412581 U CN U2007200412581U CN 200720041258 U CN200720041258 U CN 200720041258U CN 201065969 Y CN201065969 Y CN 201065969Y
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- valve
- valve seat
- interface
- rotor
- export
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- Expired - Fee Related
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model relates to an improvement for electrical changeover valve of refrigerators, which is characterized in that a valve base with at least a flat internal bottom surface are sealed on the both ends of a valve tube; a plurality of outgoing interface channels are arranged on the valve base with the flat internal bottom surface, and a plurality of incoming interface channels are arranged on the other valve base; the incoming interface channel is a turning channel structure of axially incoming and communicating in the radial direction. The utility model has the advantages that the number for interface channels of the single ended valve base and the processing difficulty are reduced; only one sealing surface is needed since the outgoing interface channels are arranged on single end, thus the processing difficulty of the valve base with the flat bottom surface, the welding difficulty of copper tube for connecting the incoming interface channel and the outgoing interface channel and the assembled difficulty are all reduced; in addition, since the axially direct-through of the through hole for the incoming interface is changed into the turning channel structure, thus not only the axial connection for copper tube is satisfied, but also the drawbacks brought by direct impact to the rotor with pressurized gas are avoided.
Description
Technical field
Model utility relates to a kind of refrigerator dynamoelectric switching valve, especially to the improvement of valve introducting interface and export interface design.
Background technique
The prior art refrigerator switches the refrigerant valve, and is basic for adopting reciprocating structure, switches respective channel by the controlled spool that moves back and forth.Yet move back and forth spool when commutation is switched, metal spool, valve base chamber impact noise are inevitable, and along with the raising day by day of environmental requirement, people wish not have the impact noise valve.Secondly, refrigerant turnover pressure reduction is held the valve startup to multiple moving valve core and also can be produced harmful effect.
Chinese patent CN1388876A discloses a kind of electric rotary switching valve, its basic principle is for utilizing stepping motor rotor angular turn function, drive switch part revolution displacement, make corresponding export interface connect, disconnect, because switching, valve do not have knockout process, thereby realized quietization, refrigerant turnover pressure reduction also can not influence the rotation switching of valve.In this valve arrangement design all introducting interfaces and export interface all are arranged on same end face, the formation single end face switches, yet refrigerator is very tiny with valve, its cross section φ has only about 15mm usually, the sealing planar bottom surface more has only about 10mm, introducting interface and numerous export interface passage (for example one advance three go out to have 4 interface channels), for guarantee has enough refrigerant flows, channel cross-section is again to guarantee introducting interface φ 4mm, export interface φ 3mm, on tiny cross section like this, arrange 4 interface channels, machining is very difficult, especially also will weld external copper pipe on channel interface, produces very trouble.
For this reason, the disclosed dynamoelectric switching valve of Chinese patent CN1904444, improve proposing to adopt the two ends switching construction, propose the export interface branch is located at rotor axis of electric to both ends of the surface (wherein an end introducting interface and export interface mix), reduce single end face channel interface and connect copper pipe quantity with this.Though this two ends switching construction improves the deficiency that is provided with in the aforementioned interface channel set, reduced many interfaces and processing and manufacturing difficulty has been set with end face.Yet export interface is divided into the valve pocket two ends, needs two rotary seal face.And the defective of two rotary seal face also is obvious: be effectively to ensure sealing, two seal faces must guarantee absolute parallel, and two rotary seal shaped members must absolute coaxality, and this gives and assembles especially the valve two end part and brought very big difficulty; Secondly, the introducting interface passage of this valve adopts and the same axial straight-through type of export interface passage, and the running clearance between rotor and airtight valve casing is necessary, the refrigerant pressure air inlet flings rotor for a long time can cause the rotor axial skew, not only make and be arranged on the close-shaped parts concentricity generation of two ends of rotor switch skew, destroy former sealability of having assembled, but also can influence the rotor rotation performance; Besides, introducing port is connected the copper pipe external diameter and has nothing in common with each other with export mouth, and mixing to be provided with end has increased the welding difficulty.
Therefore still having is worth improved place.
The model utility content
The model utility purpose is to overcome the deficiency of above-mentioned prior art, and provide a kind of and can guarantee the valve reliably working for a long time, and production and processing, the simple refrigerator dynamoelectric switching valve of assembling.
The model utility purpose realizes, the main improvement is to make the export interface passage be arranged at the axial end of valve pocket to have on the smooth inner bottom surface valve seat, the introducting interface passage is arranged on the axial the other end valve seat of valve pocket, and the via of introducting interface is led directly to by axial, change the turning channel structure that axially enters radial communication that can avoid pressure gas to fling rotor into, reach with this and simplify processing, assembling, and the reliability that improves valve, thereby overcome above-mentioned the deficiencies in the prior art, realize the model utility purpose.Specifically, model utility refrigerator dynamoelectric switching valve, the stepper motor track ring and the rotor that passes the stator ring cavity that comprise the stepper drive rotor, in the stator ring cavity, the cylindrical non-magnetizer valve pipe that rotor is outer, the valve tubular axis is to the non-magnetizer closed valve seat of band interface channel, two ends, and be arranged on the rotor shaft and rotate sealing, the switch part of conducting valve seat export interface, it is characterized in that valve pipe closed at both ends valve seat, have at least one to have smooth inner bottom surface, a plurality of export interface passages are arranged on has smooth inner bottom surface valve seat, the introducting interface passage is arranged on the valve pipe the other end valve seat, and this introducting interface passage is axially on valve seat and enters, the turning channel structure of radial communication.
The said introducting interface of model utility axially enters, the turning channel structure of radial communication, main effect is to change the air inlet direct-passing mode, making it both to satisfy the outer copper pipe that connects axially connects, simultaneously avoid pressure refrigerant axially to enter again and fling the defective that rotor causes, according to above-mentioned design, certainly also comprise off-axis to tiltedly enter and the radially tiltedly conducting that departs from the plane.
Said a plurality of export interface according to the function of valve, can be more than two above export interface passages, and for example one advances three and goes out.
Model utility refrigerator dynamoelectric switching valve, because introducting interface passage and a plurality of export interface passage are divided into the valve pocket two ends, not only reduced single-ended valve seat interface channel number, to import, the export interface passage all is arranged at a difficulty of processing with planar bottom surface valve seat, and the single-ended setting of export interface passage, only need a sealing surface, also simplified the difficulty of processing of planar bottom surface valve seat, the actual valve seat of processing that only needs with planar bottom surface, need not resemble the export interface passage and be divided into the axial two ends of valve pocket valve seat, need two valve seats of processing with planar bottom surface, also reduced simultaneously to connect and imported, export mouth passage copper pipe welding difficulty has reduced assembling difficulty especially.In addition, the via of introducting interface changes the turning channel structure that axially enters radial communication that can avoid pressure gas to fling rotor into by axially straight-through, avoids pressure gas to fling rotor, both satisfy the connection copper pipe and axially connected, and avoided pressure gas to fling the defective that rotor brings again simultaneously.
Below in conjunction with an embodiment, exemplary illustration model utility.
Description of drawings
Fig. 1 is a model utility embodiment dynamoelectric switching valve structural representation.
Fig. 2 switches multiple on state schematic representation for embodiment rotates.
Embodiment
Embodiment: referring to accompanying drawing, model utility refrigerator dynamoelectric switching valve, comprise an annular stepper motor stator 4, there is the rotor 5 and the axle 6 of indent liquid storage cylinder at two ends in the annular distance, be communicated with two ends of rotor liquid storage cylinder balance pressure at two ends delivery hole 7, the outer big slightly stainless steel cylinder valve pipe 2 of rotor, two ends are welded with stainless steel closed valve seat 1 and 11.Wherein valve seat 1 thickness is T type structure, and bump 1.1 axially has introducing port blind hole 3, and bump has radial communication hole 3.1 to form the non-turning channel structure that flings rotor; Another valve seat 11 thickness also are the T type, and crowning is processed with the smooth inner bottom surface 11.1 that seals, be circular arc on the semicircle and be distributed with three export mouth path 10 .1,10.2 and 10.3, and with the spacing spacing preiection that cooperates 12 of rotor.With being with tension spring 8 on the end rotor shaft and radially having, axially have on the switch part 9 the logical curve bath 9.2 of being used to that is communicated with two export mouth arc length with the axial float switch part 9 that changes groove 9.1.Rotor 5 is supported between valve pipe 2 closed at both ends valve seats 1 and 11 by axle 6.
Working procedure (Fig. 2) is supplied with drive signal to the stepper motor stator, and rotor drives with turn-off and closes parts 9 at initial position a, and it is used to logical curve bath 9.2 middle parts and just in time aims at an export mouth, forms the one-in-and-one-out conducting; Switch part 9 rotates 45 degree successively according to rotor, is used to logical curve bath 9.2 conductings, forms the conducting of one-in-and-two-out mouth b, one-in-and-one-out c, the different export mouths of one-in-and-two-out mouth d, one-in-and-one-out e respectively.
In addition, can also be provided with as required, and be used to logical curve bath arc length on the change switch part 9, needing realize the conducting function more than three outlets.
Claims (4)
1. refrigerator dynamoelectric switching valve, the stepper motor track ring and the rotor that passes the stator ring cavity that comprise the stepper drive rotor, in the stator ring cavity, the cylindrical non-magnetizer valve pipe that rotor is outer, the valve tubular axis is to the non-magnetizer closed valve seat of band interface channel, two ends, and be arranged on the rotor shaft and rotate sealing, the switch part of conducting valve seat export interface, it is characterized in that valve pipe closed at both ends valve seat, have at least one to have smooth inner bottom surface, a plurality of export interface passages are arranged on has smooth inner bottom surface valve seat, the introducting interface passage is arranged on the valve pipe the other end valve seat, and this introducting interface passage is axially on valve seat and enters, the turning channel structure of radial communication.
2. according to the described refrigerator dynamoelectric switching valve of claim 1, it is characterized in that the closed valve seat that is provided with introducting interface at least is the T type.
3. according to claim 1 or 2 described refrigerator dynamoelectric switching valves, it is characterized in that a plurality of export interface passages are circular arc and arrange on valve seat.
4. according to the described refrigerator dynamoelectric switching valve of claim 3, it is characterized in that rotating the logical curve bath of being used to that connection two export mouth arc length are arranged on sealing, the conducting valve seat export interface switch part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200412581U CN201065969Y (en) | 2007-07-31 | 2007-07-31 | Electric switching valve for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200412581U CN201065969Y (en) | 2007-07-31 | 2007-07-31 | Electric switching valve for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201065969Y true CN201065969Y (en) | 2008-05-28 |
Family
ID=39483146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200412581U Expired - Fee Related CN201065969Y (en) | 2007-07-31 | 2007-07-31 | Electric switching valve for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201065969Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867773A (en) * | 2012-12-12 | 2014-06-18 | 杭州通产机械有限公司 | Electric control valve |
-
2007
- 2007-07-31 CN CNU2007200412581U patent/CN201065969Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867773A (en) * | 2012-12-12 | 2014-06-18 | 杭州通产机械有限公司 | Electric control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080528 Termination date: 20160731 |