CN105570497A - Electric switching valve for refrigerator refrigerating system and refrigerator refrigerating system - Google Patents
Electric switching valve for refrigerator refrigerating system and refrigerator refrigerating system Download PDFInfo
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- CN105570497A CN105570497A CN201410551098.XA CN201410551098A CN105570497A CN 105570497 A CN105570497 A CN 105570497A CN 201410551098 A CN201410551098 A CN 201410551098A CN 105570497 A CN105570497 A CN 105570497A
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- dynamoelectric switching
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- refrigeration system
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Abstract
The invention provides an electric switching valve for a refrigerator refrigerating system and the refrigerator refrigerating system, and belongs to the technical field of refrigerating system fluid control. The problem that an existing electric switching valve is high in working noise and low in working reliability is solved. The electric switching valve for the refrigerator refrigerating system comprises a valve seat and a valve cover. A holding cavity is formed by the valve cover and the valve seat, inlet pipes and outlet pipes are connected to the valve seat, and at least one MEMS actuator is arranged in the holding cavity. Each MEMS actuator comprises a fluid inlet, a fluid outlet and an actuating assembly. Each fluid inlet is communicated with the corresponding inlet pipe, each fluid outlet is communicated with the corresponding outlet pipe, and each actuating assembly controls the corresponding fluid outlet to be opened and closed. The electric switching valve for the refrigerator refrigerating system and the refrigerator refrigerating system are applied to refrigerators, especially refrigerators with the refrigeration/cold storage/temperature variation function.
Description
[technical field]
The present invention relates to refrigerator refrigeration system dynamoelectric switching valve and refrigerator refrigeration system thereof, belong to refrigeration system fluid control technology field.
[background technique]
Mortor operated valve is the cold medium flux controlling component of chiller plant, opens or closes mortor operated valve, can control circulation and the interruption of refrigerant, and can regulate the size of cold medium flux in chiller plant system.Refrigerator in the market, especially the refrigerator of freezing/refrigerating/alternating temperature function is possessed, often utilize the various mortor operated valves of prior art to control the flow direction of its refrigeration agent, but when practical application, there are the following problems: use traditional bistable electromagnetic valve when switch operating state, inner slide block clashes into valve body and produces noise, badly influences the using character of refrigerator; Use rotary electric switching valve, it controls it by driving stepper motor slide block and switches between different working staties, but the too high meeting of stepper motor temperature makes the magnetic material of motor demagnetize, and even thus cause moment to decline step-out, reduce the reliability of dynamoelectric switching valve work; When the slide block of existing dynamoelectric switching valve does rotation motion on valve seat, the impurity in system easily blocks in the exit position of base, causes the stuck dynamoelectric switching valve that causes of slide block to lose efficacy.
[summary of the invention]
Problem to be solved by this invention is just to provide refrigerator refrigeration system dynamoelectric switching valve, effectively reduces operating noise, and improves functional reliability.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
Refrigerator refrigeration system dynamoelectric switching valve, comprise valve seat and valve gap, described valve gap and described valve seat form host cavity, described valve seat is connected with inlet tube and outer pipe, be provided with at least one MEMS driver in described host cavity, described MEMS driver has the fluid input communicated with described inlet tube, the fluid output communicated with described outer pipe and controls the actuating member that described fluid output opens and closes.
Wherein, described MEMS driver comprises the first valve plate, the second valve plate and the 3rd valve plate that stack gradually, and described fluid output and described fluid input are arranged on described first valve plate, and described actuating member is arranged on described second valve plate.
Wherein, described actuating member comprises actuating rib bar, activates ridge bar, strut and final controlling element, and described final controlling element one end is provided with fluid passage, and the other end connects described strut, described actuating rib bar connects described actuating ridge bar, and described actuating ridge bar connects described final controlling element.
Wherein, described MEMS driver is normal close type MEMS driver, and under described MEMS driver free state, described final controlling element shelters from described fluid output, under described MEMS drive operation state, described fluid exit portion or be all exposed in described fluid passage.
Wherein, described MEMS driver is open type MEMS driver, under described MEMS driver free state, and described fluid exit portion or be all exposed in described fluid passage, under described MEMS drive operation state, described final controlling element shelters from described fluid output.
Wherein, described MEMS driver adopts thermal drivers, and described dynamoelectric switching valve comprises conductor insulator portion, and described 3rd valve plate is provided with through hole, and the wire in described conductor insulator portion is connected on described second valve plate through described through hole.
Wherein, the quantity of described MEMS driver is at least two, and at least two MEMS drivers are processed into one or independently arrange.
Wherein, described MEMS driver to be bonded on described valve seat and to be compressed by described valve gap and pad, described valve gap is fixed on described valve seat, described valve seat is provided with inlet channel and at least one outlet passage, described outer pipe connects described outlet passage, and described inlet tube connects described inlet channel.
Wherein, described inlet channel comprises the restriction portion of reducing and the boot segment of taper, and described restriction portion connects described inlet tube, and described boot segment is relative with the fluid input of described MEMS driver.
The invention allows for refrigerator refrigeration system, comprise compressor, condenser, dynamoelectric switching valve and at least one vaporizer, the outlet of described compressor is connected with the entrance of described condenser, the outlet of described condenser is connected with the inlet tube of described dynamoelectric switching valve, the outer pipe of described dynamoelectric switching valve connects the entrance of described vaporizer, the outlet of described vaporizer connects the entrance of described compressor, and described dynamoelectric switching valve is the refrigerator refrigeration system dynamoelectric switching valve described in above-mentioned arbitrary technological scheme.
Beneficial effect of the present invention:
Refrigerator refrigeration system dynamoelectric switching valve of the present invention has MEMS driver, MEMS (Micro-Electro-MechanicSystem, microelectromechanical systems) type systematic can be thought, can batch making, collection micromechanism, microsensor, micro actuator and signal transacting and control circuit, until interface, communication and power supply etc. are in the system of one, the physics body of this type systematic is less, can have electronic unit and mechanical part, this is just different from traditional electromagnetic valve.The present invention utilizes MEMS driver switch fluids to flow to/control fluid flow, there is not Mechanical Contact in working procedure, has stopped the noise of mechanical collision generation, effectively reduce valve noise from principle; Fluid control and drive system based on MEMS technology replaces the stepper motor of prior art, there is not step-out risk, and reliability improves, and greatly reduces small product size and weight simultaneously, and the compressor room be convenient to refrigerator is narrow and small installs.
These features of the present invention and advantage will embodiment below, exposure detailed in accompanying drawing.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 (a) is the longitudinal profile schematic diagram of mortor operated valve entirety in the embodiment of the present invention one;
Fig. 1 (b) is the longitudinal profile schematic diagram of mortor operated valve entirety in the embodiment of the present invention one;
Fig. 2 is the perspective view (being unkitted valve gap) of mortor operated valve in the embodiment of the present invention one;
Fig. 3 is the perspective view (installation valve gap) of mortor operated valve in the embodiment of the present invention one;
Fig. 4 is the view in the embodiment of the present invention one before the energising of normal close type mortor operated valve;
Fig. 5 is the A-A cut-away view of Fig. 4;
Fig. 6 is the view in the embodiment of the present invention one after the energising of normal close type mortor operated valve;
Fig. 7 is the B-B cut-away view of Fig. 6;
Fig. 8 is the view in the embodiment of the present invention one before the energising of open type mortor operated valve;
Fig. 9 is the C-C cut-away view of Fig. 8;
Figure 10 is the view in the embodiment of the present invention one after the energising of open type mortor operated valve;
Figure 11 is the D-D cut-away view of Figure 10;
Figure 12 is the longitudinal profile schematic diagram of valve seat in the embodiment of the present invention one;
Figure 13 is the plan view of valve seat in the embodiment of the present invention one;
Figure 14 is the worm's eye view of valve seat in the embodiment of the present invention one;
Figure 15 is the detonation configuration schematic diagram of MEMS driver in the embodiment of the present invention one;
Figure 16 is the detonation configuration schematic diagram of MEMS driver in the embodiment of the present invention two;
Figure 17 is the schematic diagram of refrigerator refrigeration system of the present invention.
[embodiment]
The technological scheme of accompanying drawing to the embodiment of the present invention below in conjunction with the embodiment of the present invention is explained and illustrated, but following embodiment is only the preferred embodiments of the present invention, and not all.Based on the embodiment in mode of execution, those skilled in the art under the prerequisite not making creative work obtain other embodiments, all belong to protection scope of the present invention.
Embodiment one:
With reference to Fig. 1 (a), the refrigerator refrigeration system dynamoelectric switching valve proposed described in the embodiment of the present invention, bag has valve seat 1 and valve gap 2, valve gap 2 is connected on valve seat 1, to form host cavity, MEMS driver 3 is set in host cavity, the quantity of MEMS driver 3 can adjust according to the quantity of vaporizer required in practical refrigeration system, the present embodiment arranges three MEMS drivers 3 in host cavity, accordingly, form three fluid inputs and three fluid outputs, driven by external signal, MEMS driver 3 is utilized to control the different fluid output of refrigerant flow direction, thus the object of control flow check direction of flow can be reached.
With reference to Fig. 4,15, the present embodiment arranges three groups of MEMS drivers 3, these three groups of MEMS drivers 3 body structures are the same, be convenient to manufacture, and be convenient to during maintenance change, each MEMS driver 3 has included the first valve plate 31, second valve plate 32 and the 3rd valve plate 33, first valve plate 31, second valve plate 32 that stack gradually and the 3rd valve plate 33 all can adopt single crystal silicon material to make, such as Pyrex, wherein:
First valve plate 31 is provided with at interval fluid input 311 and fluid output 312.
Second valve plate 32 arranges actuating member, the keying that signal drives actuating member action to realize corresponding fluid output 312 controls, actuating member comprises actuating rib bar 321, activates ridge bar 322, strut 324 and final controlling element 323, final controlling element 323 one end is provided with fluid passage 3231, the other end connects strut 324, activate rib bar 321 and connect actuating ridge bar 322, activate ridge bar 322 and connect final controlling element 323.In working procedure, activate ridge bar 322 and drive final controlling element 323 with strut 324 joint for the center of circle swings back and forth.As a rule, when making MEMS driver, above-mentioned actuating rib bar 321, activate ridge bar 322, strut 324 and these fine motion mechanical parts of final controlling element 323 by one-body molded in the second valve plate 32, as by series of process such as etchings.Those skilled in the art are to be understood that: said structure is only preferred, prior art is applied in the micro-valve of other MEMS and the similar actuator structure that can realize corresponding function also can be applied in the present embodiment, certainly, this is well-known to those skilled in the art, does not describe in detail at this.
With reference to Fig. 3,3rd valve plate 33 arranges through hole 331, dynamoelectric switching valve also comprises the conductor insulator portion with wire 22 and contact pin 21, the wire 22 in conductor insulator portion is connected on the second valve plate 32 through through hole 331, during practical application, on the second valve plate 32, pair of electrodes can be installed, wire 22 is connected on electrode.
The MEMS driver of the present embodiment adopts thermal drivers, and contact pin 21 and the power cord connector grafting in conductor insulator portion, be connected on external power supply by the pair of electrodes of the second valve plate 32, electric routing switch controls.When the switch is closed, MEMS driver obtains electrical signal, activates rib bar 321 expanded by heating, and along with the expansion activating rib bar 321, actuating rib bar 321 is extended and makes to activate the action of ridge bar 322, thus drives final controlling element 323 with strut 324 joint for centre swinging; When the switches are opened, MEMS driver loses electrical signal, and by the impact activating the rigidity of rib bar 321 own, final controlling element 323 can be returned to initial position.The displacement amount of final controlling element 323 and voltage are ratio corresponding relation, the fluid output 312 of the first valve plate 31 can realize all or part of opening, thus, by controlling the aperture of fluid output 312 with applying the voltage levels correspondence ratio of electrical signal, realizing the corresponding proportional control of fluid flow, is at least to realize valve opening and valve closing two kinds of mode of operations.Further, this switch control rule of the present embodiment replaces pulse signal of the prior art and controls, and controlling method is simple, reliability is high.
Except the thermal drivers mode described in the present embodiment, in other embodiments, piezoelectric actuated, the driving mode such as magnetic actuation, electrostatically actuated is adopted also can to realize.
With reference to Fig. 4,5, for normal close type MEMS driver, under MEMS driver free state, namely under power failure state, final controlling element 323 shelters from fluid output 312, and refrigeration agent cannot flow out from fluid output 312; With reference under Fig. 6,7, MEMS drive operation states, under obtaining electricity condition, fluid output 312 is some or all of to be exposed in fluid passage 3231, and refrigeration agent can flow out from fluid output 312.
With reference to Fig. 8,9, for open type MEMS driver, under MEMS driver free state, namely under power failure state, fluid output 312 is some or all of to be exposed in fluid passage 3231, and refrigeration agent can flow out from fluid output 312; With reference under Figure 10,11, MEMS drive operation states, under obtaining electricity condition, final controlling element 323 shelters from fluid output 312, and refrigeration agent cannot flow out from fluid output 312.
No matter be normal close type MEMS driver or open type MEMS driver, the fluid input 311 on the first valve plate 31 is exposed in fluid passage 3231 all the time, and final controlling element 323 only controls the opening and closing of fluid output 312.
With reference to Fig. 2,12-15, because the present embodiment is provided with three groups of independently MEMS drivers, when actual assembled, to wherein place side by side by two groups of MEMS drivers, remaining one group of MEMS driver is placed on the end of these two groups of MEMS drivers, can installing space be saved thus, and the fluid input 311 of three groups of MEMS drivers is drawn close mutually.Valve seat 1 is provided with an inlet channel and three outlet passages 11, outlet passage 11 is connected with outer pipe 5, inlet channel is divided into the restriction portion 101 of reducing and the boot segment 102 of taper, and restriction portion 101 is connected with inlet tube 6, and boot segment 102 is relative with the fluid input 311 of three MEMS drivers.Because the fluid input 311 of three groups of MEMS drivers is drawn close mutually, the inner side of inlet channel arranges the boot segment 102 of taper, can these three fluid inputs 311 of envelope, decreases the quantity of inlet tube, simplified structure; And the restriction portion 101 of reducing can control flow, slow down the impact of refrigerant fluid to MEMS driver.
The MEMS driver of the present embodiment to be bonded on valve seat 1 and to be compressed by valve gap 2 and pad 4, and valve gap 2 is normally weldingly fixed on valve seat, and pad 4 is fluoroplastic or nylon material.Means of fixation during practical application includes but not limited to following scheme:
With reference to Fig. 1 (a), 3, above-mentioned three groups independently MEMS driver be bonded on valve seat 1, pad 4 covers MEMS driver 3 completely, namely in host cavity, all fills capsulation material, formed Plastic Division.In host cavity except MEMS driver, conductor insulator portion, its complementary space is all filled by capsulation material, is separated by the runner of refrigeration agent with electric elements, reduces leakage of refrigerant risk, sealing effect is better.
With reference to Fig. 1 (b), three groups independently MEMS driver be bonded on valve seat 1, pad 4 only covers MEMS driver 3 upper surface, reserves space between MEMS driver 3 and valve gap 2 sidewall, saves injection molding composition cost, is also convenient to heat radiation.Under this embodiment, can offer wire guide 20 on valve gap 2, wire 22 can be drawn from MEMS driver 3 side, and from wire guide 20, passes valve gap be connected with control system.
Dynamoelectric switching valve compared to existing technology, particularly be applied to the dynamoelectric switching valve of refrigerator refrigeration system, the present embodiment have employed MEMS driver, valve inner piece quantity reduces, the mortor operated valve switched as relied on magnet rotor in prior art, needs to arrange the parts such as magnet rotor and electromagnetic coil, thus can simplified structure, reduce costs, reduce assembling difficulty.Because valve inner piece quantity reduces, MEMS driver itself possesses less physics body, and it is lighter, small and exquisite that dynamoelectric switching valve can design, and the compressor room be convenient to refrigerator is narrow and small installs.
Embodiment two:
With reference to Figure 16, the refrigerator refrigeration system dynamoelectric switching valve of the present embodiment is roughly the same with embodiment one, unlike: three groups of MEMS drivers of the present embodiment are processed into one, namely the first valve plate 31 of three groups of MEMS drivers synthesizes on the first plate 34, second valve plate 32 of three groups of MEMS drivers synthesizes on the second plate 35,3rd valve plate 33 of three groups of MEMS drivers synthesizes on the 3rd plate 36, simultaneously, first plate 34 processes three fluid inputs and three fluid outputs, second plate 35 processes three actuating member, a processing through hole on the 3rd plate 36.
During assembling, first plate 34, second plate 35, the 3rd plate 36 mutually bonding form the MEMS driver with three actuating member, but three actuating member still can separately control, namely control the different fluid output of refrigerant flow direction, thus the object of control flow check direction of flow can be reached.
Adopt the MEMS driver of integral type, structure is more simple, saves manufacturing process, reduces assembling difficulty.
To those skilled in the art, the micro-valve of MEMS of three-decker is generally applied, but MEMS driver of the present invention is not confined to three-decker, under the condition that technique allows, the micro-valve of double-deck MEMS also can be applied in embodiments of the invention, and the micro-valve of current three-decker compared by double-deck micro-valve, decreases a Direct Bonding technique, significantly reduce the requirement to material flatness and environment cleanliness, reduce technology difficulty and complexity.
With reference to Figure 17, the refrigerator refrigeration system that the present invention proposes, comprise compressor 100, condenser 200, dynamoelectric switching valve 400 and three vaporizers, the outlet of compressor 100 is connected with the entrance of condenser 200, the outlet of condenser 200 is connected with the inlet tube of dynamoelectric switching valve 400, three outer pipes of dynamoelectric switching valve 400 connect alternating temperature vaporizer 500 respectively, refrigeration evaporator 600, refrigerating evaporator 700, the outlet of refrigerating evaporator 700 connects the entrance of compressor 100, usually, device for drying and filtering 300 is also connected with between the outlet and the inlet tube of dynamoelectric switching valve 400 of condenser 200.
State on the basis of dynamoelectric switching valve 400 described in embodiment before application, refrigerator refrigeration system of the present invention can realize following three kinds of cooling operation mode:
1, compressor 100 → condenser 200 → device for drying and filtering 300 → dynamoelectric switching valve inlet tube 401 → dynamoelectric switching valve first outer pipe 402 → alternating temperature vaporizer 500 → refrigerating evaporator 700 → compressor 100.
2, compressor 100 → condenser 200 → device for drying and filtering 300 → dynamoelectric switching valve inlet tube 401 → dynamoelectric switching valve second outer pipe 403 → refrigeration evaporator 600 → refrigerating evaporator 700 → compressor 100.
3, compressor 100 → condenser 200 → device for drying and filtering 300 → dynamoelectric switching valve inlet tube 401 → dynamoelectric switching valve the 3rd outer pipe 404 → refrigerating evaporator 700 → compressor 100.
The embodiment of the present invention is applied to refrigerator, especially possesses the refrigerator of freezing/refrigerating/alternating temperature function.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and is familiar with this those skilled in the art and should be understood that and the present invention includes but the content being not limited to accompanying drawing and describing in embodiment above.Any amendment not departing from function and structure principle of the present invention all will comprise within the scope of the appended claims.
Claims (10)
1. refrigerator refrigeration system dynamoelectric switching valve, it is characterized in that: comprise valve seat and valve gap, described valve gap and described valve seat form host cavity, described valve seat is connected with inlet tube and outer pipe, be provided with at least one MEMS driver in described host cavity, described MEMS driver has the fluid input communicated with described inlet tube, the fluid output communicated with described outer pipe and controls the actuating member that described fluid output opens and closes.
2. refrigerator refrigeration system dynamoelectric switching valve as claimed in claim 1, it is characterized in that: described MEMS driver comprises the first valve plate, the second valve plate and the 3rd valve plate that stack gradually, described fluid output and described fluid input are arranged on described first valve plate, and described actuating member is arranged on described second valve plate.
3. refrigerator refrigeration system dynamoelectric switching valve as claimed in claim 2, it is characterized in that: described actuating member comprises actuating rib bar, activates ridge bar, strut and final controlling element, described final controlling element one end is provided with fluid passage, the other end connects described strut, described actuating rib bar connects described actuating ridge bar, and described actuating ridge bar connects described final controlling element.
4. refrigerator refrigeration system dynamoelectric switching valve as claimed in claim 3, it is characterized in that: described MEMS driver is normal close type MEMS driver, under described MEMS driver free state, described final controlling element shelters from described fluid output, under described MEMS drive operation state, described fluid exit portion or be all exposed in described fluid passage.
5. refrigerator refrigeration system dynamoelectric switching valve as claimed in claim 3, it is characterized in that: described MEMS driver is open type MEMS driver, under described MEMS driver free state, described fluid exit portion or be all exposed in described fluid passage, under described MEMS drive operation state, described final controlling element shelters from described fluid output.
6. refrigerator refrigeration system dynamoelectric switching valve as claimed in claim 2, it is characterized in that: described MEMS driver adopts thermal drivers, described dynamoelectric switching valve comprises conductor insulator portion, described 3rd valve plate is provided with through hole, and the wire in described conductor insulator portion is connected on described second valve plate through described through hole.
7. refrigerator refrigeration system dynamoelectric switching valve as claimed in claim 1, is characterized in that: the quantity of described MEMS driver is at least two, and at least two MEMS drivers are processed into one or independently arrange.
8. refrigerator refrigeration system dynamoelectric switching valve as claimed in claim 1, it is characterized in that: described MEMS driver to be bonded on described valve seat and to be compressed by described valve gap and pad, described valve gap is fixed on described valve seat, described valve seat is provided with inlet channel and at least one outlet passage, described outer pipe connects described outlet passage, and described inlet tube connects described inlet channel.
9. refrigerator refrigeration system dynamoelectric switching valve as claimed in claim 8, it is characterized in that: described inlet channel comprises the restriction portion of reducing and the boot segment of taper, described restriction portion connects described inlet tube, and described boot segment is relative with the fluid input of described MEMS driver.
10. refrigerator refrigeration system, comprise compressor, condenser, dynamoelectric switching valve and at least one vaporizer, the outlet of described compressor is connected with the entrance of described condenser, the outlet of described condenser is connected with the inlet tube of described dynamoelectric switching valve, the outer pipe of described dynamoelectric switching valve connects the entrance of described vaporizer, the outlet of described vaporizer connects the entrance of described compressor, it is characterized in that: described dynamoelectric switching valve is the refrigerator refrigeration system dynamoelectric switching valve described in any one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551098.XA CN105570497B (en) | 2014-10-17 | 2014-10-17 | Refrigerator refrigeration system dynamoelectric switching valve and its refrigerator refrigeration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551098.XA CN105570497B (en) | 2014-10-17 | 2014-10-17 | Refrigerator refrigeration system dynamoelectric switching valve and its refrigerator refrigeration system |
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| CN105570497A true CN105570497A (en) | 2016-05-11 |
| CN105570497B CN105570497B (en) | 2019-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146865A (en) * | 2018-03-20 | 2018-06-12 | 陈柯 | A kind of medical treatment case apparatus |
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| CN1322282A (en) * | 1998-09-03 | 2001-11-14 | 卢卡斯新星传感器公司 | Proportional micromechanical device |
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| US6523560B1 (en) * | 1998-09-03 | 2003-02-25 | General Electric Corporation | Microvalve with pressure equalization |
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