CN100582535C - Electric switch valve and refrigerating cycle for freezing refrigerator - Google Patents
Electric switch valve and refrigerating cycle for freezing refrigerator Download PDFInfo
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- CN100582535C CN100582535C CN200510061722A CN200510061722A CN100582535C CN 100582535 C CN100582535 C CN 100582535C CN 200510061722 A CN200510061722 A CN 200510061722A CN 200510061722 A CN200510061722 A CN 200510061722A CN 100582535 C CN100582535 C CN 100582535C
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Abstract
The invention relates to an electric switching valve. A via hole is set on the sliding block. One port of via hole is connected with said valve cavity and the other port with crescent shape is located on the sealing face where the sliding block is faced to said flat sealing face. So, as the rotary of sliding block on said flat sealing face changes the position between crescent groove and two outputting ports, the switch of open and close statuses for two outputting ports is realized. The electric switching valve with simple structure can decrease manufacturing cost and allocate cool medium more reasonably. It is applied in freezing cycle of freezing and cool storage refrigerator for allocating cool medium to evaporator of freezing compartment and evaporator of cool storage compartment. It is provided with evident advantage.
Description
Technical field
The present invention relates to distribute by stepper motor revolution driving sliding block the dynamoelectric switching valve of refrigerant, this dynamoelectric switching valve is applied in the freeze cycle of refrigerating and cold storage refrigerator in order to reasonably to distribute refrigerant to have remarkable advantages to freezer evaporator and refrigerator evaporator.
Background technique
The spy opens 2002-122366 day disclosure special permission communique [patent documentation 1] and discloses a kind of dynamoelectric switching valve, it is an inlet stream to be set be positioned at from locational outlet stream with two on valve seat, the slide block that is turned round driving is on the opposite of valve seat, the passage opening/closing shape portion that formation is made of open zone and non-open zone, thereby when slide block rotates, can distribute to two outlet streams to the refrigerant of inlet stream by the change in location of described passage opening/closing shape portion and two exit passageways.
The spy opens 2002-295694 day disclosure special permission communique [patent documentation 2] and discloses a kind of mortor operated valve, it is the circular-arc groove that connects each other that the minute surface symmetry is set on the tabular surface up and down of the slide block of revolution action, by the revolution action of slide block, from the flow of positive and negative any flow direction control outlet from the full cut-off to the standard-sized sheet.
The spy opens 2002-39661 day disclosure special permission communique [patent documentation 3] and discloses a kind of mortor operated valve, and it switches refrigerant flow by revolution action moving slider position.
In the dynamoelectric switching valve of patent documentation 1, passage opening/closing shape portion on the slide block is divided into open field and non-open field by rib shape wall part, because non-open field is pocket shape, so the slide block end-face structure must have rib shape wall part, this slider end mask has the structure and the shape more complicated in jut and branch field, may cause expensive.And in non-open field, when refrigerant flowed out from 2 outlet streams, the discharge of two outlet streams was uncontrollable, is difficult to the usage requirement that reaches desirable.Further, structure based on passage opening/closing shape portion, wherein any outlet stream all is quick in conducting with closing between two states when changing, a small angle rotation that is slide block just can realize conducting and close two conversions between the state, therefore, if want that by making small angle of slide block rotation make any outlet stream work in half on state all be difficult, unmanageable.
In patent documentation 2, because slide block is respectively arranged with circular-arc groove on the tabular surface up and down, from positive and negative any direction control flow rate, therefore, the valve seat surface that the slide block of revolution action slides must be distinguished the circular-arc groove setting of subtend, and it is complicated that the mortor operated valve structure becomes.In addition, above-mentioned circular-arc groove has through hole, and be that the sectional area of the groove of starting point reduces to form a terminal point gradually with the through hole, this structure does not consider fully that only to a refrigerant exit path control described circular-arc groove switches the outflow of two exit passageway refrigerants.
In patent documentation 3, the jut of C word shape below slide block circumferential part and be provided with, be provided with fan-shaped contacting part in the place that does not have this jut, below slide block, form the teat of jut and contacting part, so the slide block structure more complicated.
And, freeze cycle about the refrigerating and cold storage refrigerator that uses former dynamoelectric switching valve, slide block revolution action by dynamoelectric switching valve distributes through two export mouths refrigerant to freezer evaporator and refrigerator evaporator technological scheme is disclosed, but two outlet streams that are based on the moving switching valve of aforementioned electric are difficult to work in half on state, and the uncontrollable chronic diseases of discharge of two outlet streams when simultaneously outwards flowing out refrigerant, just making freezer evaporator and refrigerator evaporator and to quit work in fully loaded work (promptly under the Zui Da cold medium flux work) selects between (promptly do not have refrigerant flow through vaporizer) two states, and less than the intermediateness between two working staties, in actual use, the working state of this centre is to energy-conservation, positive role is arranged working life freezing and refrigeration efficient and vaporizer.
Summary of the invention
The technical problem that the present invention at first will solve and the technical assignment of proposition be overcome the existing mortor operated valve complex structure that is used to distribute refrigerant, manufacture cost height, to shortcomings such as the distribution of refrigerant are reasonable inadequately, the dynamoelectric switching valve that provides a kind of and simplify the structure, can reduce manufacture cost and can more reasonably distribute refrigerant.For this reason, by the following technical solutions:
A kind of dynamoelectric switching valve, it comprises:
Shell, this enclosure constitutes valve pocket;
An introducing port that communicates with described valve pocket and be arranged on two export mouths on the smooth sealing surface of described valve pocket;
By being contained in the outer stator of shell and being contained in the stepper motor that the rotor in the above-mentioned valve pocket constitutes;
On described smooth sealing surface, rotate to change the slide block of two export mouth open and-shut modes by its sealing surface by the rotor driven of above-mentioned stepper motor;
It is characterized in that: offer a through hole on the described slide block, a port of this through hole is communicated with described valve pocket, its another port forms the crescent shape port and is positioned at slider surface on the sealing surface of described smooth sealing surface, described crescent shape port is slowly gradual change on the direction that slide block rotates, and the position by the slide block rotation on described smooth sealing surface change crescent shape port and two export mouths is with the conversion that realizes two export mouth open and-shut modes and the change of two export mouth cold medium fluxes thus.
As the further of technique scheme improved and replenish, dynamoelectric switching valve of the present invention also comprises following additional technical feature:
The size of described crescent shape port is set in the stroke that slide block rotates and can be communicated with simultaneously with two export mouths, perhaps in the stroke that slide block rotates, can misplace fully with an export mouth and be communicated with another export mouth, perhaps in the stroke that slide block rotates, can misplace mutually combining between the perhaps above-mentioned three fully with two export mouths simultaneously.So that the intermediateness that makes two export mouths can work in existing several assembled state simultaneously and hereinafter address.
The cross section of whole described through hole is crescent shape.The cross section of described through hole increases progressively to the other end from an end of slide block sealing surface.So that processing and control flows output correctly.
According to above structure, because slide block is provided with the crescent shape port, slide block structure is simple, helps realizing low-cost; And the position by the slide block rotation on described smooth sealing surface change crescent shape port and two export mouths is to realize the conversion of two export mouth open and-shut modes, especially based on the shape of crescent shape port, making can be by changing and the position of relative this crescent shape port of export mouth of this crescent shape port connection (corresponding) changes the cold medium flux of this export mouth, make flow be tending towards reasonable, and, equally on the direction that slide block rotates, have the characteristic of slow gradual change, realize change the cold medium flux of this specific export mouth thereby can make slide block have enough big rotation angle based on the crescent shape port; Obvious, when the size of crescent shape port is set in the stroke that slide block rotates and can be communicated with simultaneously with two export mouths, can realize change to the cold medium flux of two export mouths.
The technical problem of its less important solution of the present invention and the technical assignment of proposition are to overcome existing refrigerating and cold storage refrigerator freeze cycle working state defect of insufficient, provide a kind of and when two of dynamoelectric switching valve outlet streams outwards flow out refrigerants simultaneously, still can make freezer evaporator and refrigerator evaporator work in fully loaded work and the intermediateness that quits work between the two states, with to having a positive effect working life energy-conservation, freezing and that refrigerate efficient and vaporizer.For this reason, by the following technical solutions:
A kind of refrigerating and cold storage refrigerator refrigeration cycle that contains the dynamoelectric switching valve of aforementioned qualification, it is characterized in that, send and the refrigerant of the condenser of flowing through is distributed to freezer evaporator and refrigerator evaporator by described dynamoelectric switching valve from the compressor discharge opening, return the above-mentioned compressor suction side and realize circulation.
Because this refrigerating and cold storage refrigerator has used the aforesaid dynamoelectric switching valve of the present invention to distribute refrigerant for freezer evaporator and refrigerator evaporator with freeze cycle, thereby make freezer evaporator and refrigerator evaporator can work in, to the energy-conservation, freezing of refrigerator with positive role is arranged in working life of refrigerating efficient and vaporizer in fully loaded work and the intermediateness that quits work between the two states.
Description of drawings
Fig. 1 is the longitudinal section of dynamoelectric switching valve of the present invention;
Fig. 2 (A) is the vertical section structure schematic representation of the valve body of dynamoelectric switching valve shown in Figure 1;
Fig. 2 (B) is that the R of Fig. 2 (A) is to planimetric map;
Fig. 3 (A) is the vertical section structure schematic representation of the slide block of dynamoelectric switching valve shown in Figure 1;
Fig. 3 (B) is that the K of Fig. 3 (A) schemes to plane (slip surface);
Fig. 4 (A)～4 (D) goes up four position views that rotate for slide block when the stator coil of dynamoelectric switching valve shown in Figure 1 applies 0,18,36,54 pulse at (the smooth sealing surface) of valve body;
Fig. 5 has used the refrigerating and cold storage refrigerator refrigeration cycle diagram of dynamoelectric switching valve shown in Figure 1 for the present invention.
Among the figure: 1-stepper motor, 1A-inlet duct, 1C-outer pipe, the 10-dynamoelectric switching valve, 11-outer cover, 12-coil, the 13-magnet rotor, 131-magnet rotor underpart, 2-valve body, the 2A-inlet opening, 2B-second export mouth, 2C-first export mouth, the 21-fixing pin, the 22-valve pocket is above the 23-valve body, 24-seat surface (smooth sealing surface), 25-welds step, 3-valve shaft, 31-valve shaft upper end, 32-valve shaft lower end, the last axle of 33-is subjected to portion, the 34-lower dent, 35-upper recess, 36-wear resistance nonmetallic material, the 37-lower shaft is subjected to portion, 38-spring, 4-slide block, the through hole of 41-slide block is above the 411-slide block, below the 412-slide block, 413-crescent shape port, S1, S2-crescent shape port end, the 42-axis hole, 43-notch (cutting), e-sells mounting hole; The CO-compressor, the D-exhaust end, the S-suction side, C1-is from the condenser of exhaust end D inflow refrigerant, Re-refrigerator evaporator, P1, P2-capillary tube; The Fe-freezer evaporator, the P refrigerant is taken over.
Embodiment
Among Fig. 1, dynamoelectric switching valve 10 mainly comprises stepper motor 1, valve body 2, slide block 4 and valve shaft 3.Outer cover 11 is made by nonmagnetic metal such as stainless steel, be end inversion tubular, dispose coil 12 in its outside, side is by outer cover 11 and be approximate H word shape magnetic material such as magnet rotor 13 that ferrite is made is fixed on the valve shaft 3 and supports within it, magnet rotor 13 constitutes stepper motor 1 with coil 12 (stator), above-mentioned magnet rotor 13 can rotate with valve shaft 3, this slewing area is limited to several angle as in 360 °, and this restriction is to carry out near on the underpart 131 of magnet rotor 13 is received above the seat surface that is arranged on valve body 2 circle edge the fixing pin 21.Be surrounded by the material such as the HNBR material of the contact sound that can reduce above-mentioned contact on the fixing pin 21.
The upper end 31 and the lower end 32 of valve shaft 3 are supported by the axle portion of being subjected to.Last axle is made of as PTFE wear resistance nonmetallic material with lubricating function on the recess that is arranged on outer cover 11 bottoms 36 by portion 33, and 31 support by upper recess 35 on the valve shaft.Lower shaft is made of the wear resistance nonmetallic material 36 on the lower dent 34 of valve body 2 central parts by portion 37, and the lower end 32 of valve shaft 3 is supported in the lower dent 34.
Welding fixedly forms as plasma with valve body 2 welding in the lower ending opening portion 111 of outer cover 11, and outer cover 11 and valve body 2 form valve pocket 22 spaces, form refrigerant flow.
With the valve body 2 of lower ending opening portion 111 integrated setting of outer cover 11 as shown in Figure 2, its longitudinal section is in the form of annular discs by making as metal 1Cr18Ni9Ti.Top 23 centers of valve body 2 are formed with the formation lower shaft and are subjected to the lower dent 34 of portion 37, and valve body 2 has certain wide H such as 8mm and diameter D such as 17.5mm.Offer the hole as the inlet opening 2A and the first export mouth 2C above the valve body on 23, inlet duct 1A and outer pipe 1C weld (as the silver brazing weldering) from the inlet opening 2A and the first export mouth 2C downside respectively and connect the formation fluid passage.Inlet duct 1A and outer pipe 1C outlet are communicated with the above-mentioned inlet opening 2A and the first export mouth 2C respectively.25 is the step that welds with the lower end of outer cover 11, the above-mentioned inlet opening 2A and the first export mouth 2C are arranged on the position shown in the planimetric map of Fig. 2 (B) valve body 2, promptly the inlet opening 2A that is communicated with inlet duct 1A is arranged on the valve diameter direction, keeps certain distance with the first export mouth 2C.At the export mouth that on the circumferencial direction of the first export mouth 2C, is equipped with as the second export mouth 2B, be positioned at the formation lower shaft and be subjected to around the lower dent 34 of portion 37.Therefore, the first export mouth 2C and the second export mouth 2B keep certain distance mutually, from inlet opening 2A radially away from, be provided with in a circumferential direction.On the second export mouth 2B, the connection of second outer pipe is communicated with the same with the first outer pipe 1C.In addition, on the pin mounting hole e fixing pin 21 is set, is used for the location.Valve shaft 3 is provided with on the above-below direction of the center line of outer cover 11, and its two ends are subjected to portion 33 and lower shaft supported by portion 37 by last axle, is equipped with in the lower end of valve shaft 3 and can rotates the slide block that slides on the seat surface 24 at valve body 2.
Among the figure, the through hole 41 of up/down perforation is a disc and from top 411 through on following 412, and 42 is the axis hole of disc up/down perforation, and can chimeric entering in the underpart of valve shaft 3, is used for fixing slide block 4.43 is the cutting that forms in slide block 4 sides, and this cutting 43 combines in valve pocket 22 with magnet rotor 13 underparts 131, connects slide block 4 and magnet rotor 13, by the rotation of magnet rotor 13, sets the rotary position of slide block 4.
Between slide block 4 and the magnet rotor 13 spring 38 is housed, spring 38 is installed in valve pocket 22 between slide block 4 and the magnet rotor 13, slide block 4 is pressed on the seat surface 24 (smooth sealing surface) of valve body 2.Slide block 4 slides on the seat surface 24 of valve body 2 and comes driving rotational, and the through hole 41 below slide block on 412 slip surfaces (sealing surface) constitutes crescent shape port 413 along axis hole 42 circumferential edges of slide block 4 on shown in Fig. 3 (B) planimetric map on 411.
The crescent shape port 413 that connects slide block 4 is from being that 0.3～0.7mm partial L reduces gradually to 2 direction diameters of circumference as maximum groove width, and minimum diameter is set at 2 end S1 and S2.
In the slide block 4 of this structure, by imposing on coil 12 pulsed field magnetizations, drive magnet rotor 13, valve shaft 3 also rotates simultaneously, slide block 4 rotates in valve pocket 22, and 412 slide on the seat surface 24 of valve body 2 below it, and crescent shape port 413 moves on the first export mouth 2C and the second export mouth 2B, the size of crescent shape port 413 can be simultaneously overlapping with the first export mouth 2C and the second export mouth 2B, thereby control the circulation of each export mouth of the refrigerant that inlet opening 2A flows in the valve pocket 22.
Promptly, revolution along with magnet rotor 13, slide block 4 is in the seat surface 24 enterprising line slips of valve body 2 shown in Fig. 4 (A), the crescent shape port 413 and the first export mouth 2C and the second export mouth 2B are overlapping, during this position, the pulse that imposes on dynamoelectric switching valve 10 is zero, is equivalent to starting state, and crescent shape port 413 is positioned at the position of the first export mouth 2C, the second export mouth 2B standard-sized sheet.
2A is the inlet opening among Fig. 4, omitted the pin mounting hole e of fixing pin 21, because it is 0.3-0.7mm that crescent shape port 413 has been set its Extreme breadth, diameter such as the 1.2mm of the first export mouth 2C and the second export mouth 2B, then along with the variation of crescent shape port 413 width, changing appears in the circulation area of the first export mouth 2C and the second export mouth 2B, by inlet opening 2A flow into valve pocket 22, the cold medium flux that flows out through the first export mouth 2C and the second export mouth 2B again just is under control.
When valve piece 4 slided on valve body 2 seat surfaces 24, the crescent shape port 413 on the valve piece 4 was can the overlapping leap first export mouth 2C and the second export mouth 2B along the shape length setting of circumferential edges.In addition, above-mentioned crescent shape port 413 can be set in the position on the first export mouth 2C and the second export mouth 2B both sides along the length of circumferential edges, and end S1 and S2 leave opposed mutually or opposed on one side.The length of this crescent shape port 413 is at any export mouth, end on one side such as end S1 are facing to the second export mouth 2B, because crescent shape port 413 can be set at the overlapping length with the first export mouth 2C, the through hole 41 that constitutes above-mentioned crescent shape port 413 has degrees of freedom, forms on slide block.
Therefore, can easily control the flow of the outflow refrigerant of two export mouths by above-mentioned groove crescent shape port 413.
Because the length of above-mentioned crescent shape port 413 can suitably be set, when controlling above-mentioned discharge, can correctly move above-mentioned activation point, change the discharge of each export mouth.
Other set positions of above-mentioned crescent shape port 413 are shown in Fig. 4 (B)-Fig. 4 (D).
Fig. 4 (B)-Fig. 4 (D) is illustrated in when stepper motor applies pulse, the desired location figure that moves of the crescent shape port 413 that produces according to the slip of this umber of pulse slide block.Among Fig. 4 (B)-Fig. 4 (D), represent with a part with Fig. 4 (A) prosign.
Secondly, Fig. 5 (C) is depicted as the state that umber of pulse is the end of 18-36 (the 2nd section flow adjustment) process: crescent shape port 413 is in the umber of pulse 18-30 stage, keeps the second export mouth 2B full-shut position, keeps the discharge that has of the first export mouth 2C; Umber of pulse 30-36 is in the stage, and crescent shape groove 413 reduces the discharge of the first export mouth 2C, and until being zero, the end S1 of crescent shape groove 413 leaves the first export mouth 2C, and the first export mouth 2C is in full-shut position; And the second export mouth 2B keeps full-shut position.
It is the state that 36-54 (the 2nd section flow adjustment) process finishes that Fig. 5 (D) is depicted as umber of pulse: umber of pulse is in the process of 42-52, the crescent shape port is adjusted the flow of the second export mouth 2B according to the umber of pulse that applies, it is changed, the end S1 of crescent shape groove 413 leaves facing to the first export mouth 2C, and the first export mouth 2C keeps full-shut position.
When contrary direction applied pulse, the slip of above-mentioned slide block 4 and direction of arrow r opposite direction slided, and moving of above-mentioned crescent shape port 413 is opposite with arrow r, and the set positions of above-mentioned Fig. 4 (B)-Fig. 4 (D) is an opposite direction.
Fig. 5 is the refrigerating and cold storage refrigerator refrigeration cycle diagram.CO is a compressor, and D is an exhaust end, and S is the suction side, and C1 is the condenser that flows into refrigerant from exhaust end D, and the refrigerant of condenser C1 is supplied with dynamoelectric switching valve 10, flows into valve pocket 22 by the inlet opening.Re is a refrigerator evaporator, is flowed out by dynamoelectric switching valve 10 export mouths, and the capillary tube P1 of process provides refrigerant.Fe is a freezer evaporator, is flowed out when providing refrigerant through capillary tube P2 by the export mouth of dynamoelectric switching valve 10, and the refrigerant of vaporizer Re also is provided.The refrigerant of vaporizer Fe is got back to compressor CO suction side S, and P is that refrigerant is taken over.
In the freeze cycle, when the second export mouth 2B of dynamoelectric switching valve 10 was in open mode, the refrigerant of compressor CO exhaust end D offered vaporizer Re through capillary tube P1, gets back to compressor CO suction side S by vaporizer Fe.
When the first export mouth 2C of dynamoelectric switching valve 10 was in open mode, the refrigerant of compressor CO exhaust end D offered vaporizer Fe through capillary tube P2, gets back to compressor CO suction side S.
On refrigerant circulation, when compressor CO started, when umber of pulse was 0 dynamoelectric switching valve 10 starting states, shown in above-mentioned Fig. 4 (A), the refrigerant that the first export mouth 2C and the second export mouth 2B flow out was given and is supplied with vaporizer Fe and Re, brings into play high-quality cooling effect.
Temperature of refrigerating chamber is fast near state of temperature is set, desired location by the slide block 4 in first section control, regulate the second export mouth 2B flow, to reach best refrigeration, reach up to cold storage room temperature is set, then refrigerating chamber reaches soon temperature is set, be transformed into desired location by the slide block 4 in second section control, the flow of the regulator first export mouth 2C, when freezing, reach temperature is set, outlet 2B, 2C are controlled at full-shut position, and compressor CO shuts down, and the refrigeration agent of C in the condenser is dammed to be stored in the condenser C;
Compressor CO outage state: when cold storage room and refrigerating chamber all require to freeze, start compressor CO, implement the set positions of the slide block 4 in first section control;
Compressor CO outage state: when refrigerating chamber requires to freeze separately, start compressor CO, implement the set positions of the slide block 4 in first section control;
Compressor CO outage state: when cold storage room requires to freeze separately, start compressor CO, implement the set positions of the slide block 4 in first section control;
In the freeze cycle among above-mentioned Fig. 5,, change cold medium flux, a kind of refrigeration freeze cycle of using of refrigerating and cold storage refrigerator preferably can be provided owing to can select the refrigeration of cold storage room or refrigerating chamber.
Claims (8)
1, a kind of dynamoelectric switching valve, it comprises:
Shell, this enclosure constitutes valve pocket;
An introducing port that communicates with described valve pocket and be arranged on two export mouths on the smooth sealing surface of described valve pocket;
By being contained in the outer stator of shell and being contained in the stepper motor that the rotor in the above-mentioned valve pocket constitutes;
On described smooth sealing surface, rotate to change the slide block of two export mouth open and-shut modes by its sealing surface by the rotor driven of above-mentioned stepper motor;
It is characterized in that: offer a through hole on the described slide block, a port of this through hole is communicated with described valve pocket, its another port forms the crescent shape port and is positioned at slider surface on the sealing surface of described smooth sealing surface, described crescent shape port is slowly gradual change on the direction that slide block rotates, and the position by the slide block rotation on described smooth sealing surface change crescent shape port and two export mouths is with the conversion that realizes two export mouth open and-shut modes and the change of two export mouth cold medium fluxes thus.
2, dynamoelectric switching valve according to claim 1 is characterized in that the size of described crescent shape port is set in the stroke that slide block rotates and can be communicated with simultaneously with two export mouths.
3, dynamoelectric switching valve according to claim 1 and 2 is characterized in that the size of described crescent shape port is set in the stroke that slide block rotates and can misplaces fully with an export mouth and be communicated with another export mouth.
4, dynamoelectric switching valve according to claim 3 is characterized in that the size of described crescent shape port is set in the stroke that slide block rotates and can misplaces fully with two export mouths simultaneously.
5, dynamoelectric switching valve according to claim 1 and 2 is characterized in that the size of described crescent shape port is set in the stroke that slide block rotates and can misplaces fully with two export mouths simultaneously.
6, dynamoelectric switching valve according to claim 1 is characterized in that the cross section of whole described through hole is crescent shape.
7, dynamoelectric switching valve according to claim 6 is characterized in that the cross section of described through hole increases progressively to the other end from an end of slide block sealing surface.
8, a kind of refrigerating and cold storage refrigerator refrigeration cycle, it contains a dynamoelectric switching valve, is characterised in that:
Described dynamoelectric switching valve comprises:
Shell, this enclosure constitutes valve pocket,
An introducing port that communicates with described valve pocket and be arranged on two export mouths on the smooth sealing surface of described valve pocket,
By being contained in the outer stator of shell and being contained in the stepper motor that the rotor in the above-mentioned valve pocket constitutes,
On described smooth sealing surface, rotate changing the slide block of two export mouth open and-shut modes by its sealing surface by the rotor driven of above-mentioned stepper motor,
Offer a through hole on the described slide block, a port of this through hole is communicated with described valve pocket, its another port forms the crescent shape port and is positioned at slider surface on the sealing surface of described smooth sealing surface, described crescent shape port is slowly gradual change on the direction that slide block rotates, and the position by the slide block rotation on described smooth sealing surface change crescent shape port and two export mouths is with the conversion that realizes two export mouth open and-shut modes and the change of two export mouth cold medium fluxes thus;
Send and the refrigerant of the condenser of flowing through is distributed to freezer evaporator and refrigerator evaporator by the introducing port of described dynamoelectric switching valve through two export mouth from the compressor discharge opening, return the above-mentioned compressor suction side and realize circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510061722A CN100582535C (en) | 2005-11-25 | 2005-11-25 | Electric switch valve and refrigerating cycle for freezing refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510061722A CN100582535C (en) | 2005-11-25 | 2005-11-25 | Electric switch valve and refrigerating cycle for freezing refrigerator |
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| Publication Number | Publication Date |
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| CN1971111A CN1971111A (en) | 2007-05-30 |
| CN100582535C true CN100582535C (en) | 2010-01-20 |
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| CN200510061722A Active CN100582535C (en) | 2005-11-25 | 2005-11-25 | Electric switch valve and refrigerating cycle for freezing refrigerator |
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2005
- 2005-11-25 CN CN200510061722A patent/CN100582535C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6164331A (en) * | 1996-08-06 | 2000-12-26 | Sugita; Mitsuo | Channel-switching valve and method of controlling the same, and refrigerating cycle and method of controlling the same |
| CN1388876A (en) * | 2000-08-11 | 2003-01-01 | 株式会社鹭宫制作所 | Motor-operated selector valve and refrigerating cycle device of refrigerator-freezer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1971111A (en) | 2007-05-30 |
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Owner name: ZHEJIANG SANHUA GROUP CO., LTD. Free format text: FORMER OWNER: SANHUA REFRIGERATION GROUP CO., LTD., ZHEJANG Effective date: 20140624 |
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Address after: 312500 Xinchang, Zhejiang Qixing street under the Liquan Patentee after: Zhejiang three flower intelligent control Limited by Share Ltd Address before: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee before: Zhejiang Sanhua Group Co., Ltd. |
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