CN106439171A - Electronic expansion valve device, control method thereof and multi-split system - Google Patents
Electronic expansion valve device, control method thereof and multi-split system Download PDFInfo
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- CN106439171A CN106439171A CN201611024874.6A CN201611024874A CN106439171A CN 106439171 A CN106439171 A CN 106439171A CN 201611024874 A CN201611024874 A CN 201611024874A CN 106439171 A CN106439171 A CN 106439171A
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- auxiliary
- electronic expansion
- control mainboard
- expansion valve
- controls
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims description 70
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 47
- 239000003507 refrigerant Substances 0.000 description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides an electronic expansion valve device, comprising: the base is provided with a circulation channel; a main valve assembly mounted on the base; the auxiliary valve assembly is arranged on the base; the auxiliary valve assembly can open the flow passage after being electrified; the auxiliary valve assembly can block the flow channel after power failure. The auxiliary valve assembly ensures that the electronic expansion valve device can completely block a circulation channel after power failure, effectively solves the problem of liquid return of a multi-split system caused by the fact that the electronic expansion valve of an indoor unit is not closed when power failure occurs in the conventional multi-split engineering, ensures the service performance of a compressor, and improves the operation reliability of the multi-split system. The invention also provides a control method of the electronic expansion valve device and a multi-split system.
Description
Technical field
The present invention relates to air conditioner technical field, more particularly to a kind of electronic expansion valve gear and its control method and
Multiple on-line system.
Background technology
Multi-connected machine can give multiple users cooling or heat supply simultaneously simultaneously, therefore usually applies in hotel, hotel, office building etc.
The more occasion of resident family.The normal project installation of multi-connected machine requires：Multi-connected machine need to be unified to power and such as illuminate dress with other equipment
Put etc. and to need to keep independent.But reality this point in application is but often difficult to ensure, therefore, multi-connected machine is it is possible that part
The independently-powered situation of indoor set, this part indoor set is possible in use by independent cut-out (in office building layer
Machine is individually powered, the equal power down in this layer of all room when personnel leave away), now electronic expansion valve of indoor unit has little time to reset, and protects
Hold current aperture and cause coolant leakage, multi-connected machine can be caused to return liquid and lead to compressor damage.
At present, returned liquid for solving the problems, such as multi-connected machine by what independent cut-out led to, when in engineering generally using separately powering,
Run into and can execute protection under more indoor set power-down conditions, in case the control of non-return liquid.But, this solution is by inspection
Survey a number of indoor set communication to go offline thus judging its power down and report protection to shut down, this mode having certain limitation, such as
How much interior machine is suitable for detection？If less than normal, frequently protection may be reported, on the high side, then may protect not in place.So, indoor set divides
When opening power supply, once multiple indoor set power down (as floor maintenance or multiple indoor set when not in use) occur, then lead to many
Online whole machine protection is shut down and is not worked, thus affecting the use (experiencing particularly not good especially for hotel) of other room air conditioners,
If the whole machine of multi-connected machine not stoppage protection when, multi-connected machine occurs back liquid problem, the reliability service of impact multi-connected machine.
Content of the invention
Based on this it is necessary to for indoor set in current multi-connected machine engineering electric expansion valve power down do not close lead to many
Back the problem of liquid in on-line system, provides one kind it can be avoided that leading to back liquid because power down leads to circulation passage not exclusively to block
The electronic expansion valve gear of problem, additionally provides a kind of control method being applied to above-mentioned electronic expansion valve gear simultaneously, and
A kind of multiple on-line system containing above-mentioned electric expansion valve is provided.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of electronic expansion valve gear, including：
Pedestal, is provided with circulation passage in described pedestal；
Main valve assembly, is installed on described pedestal；And
Secondary valve module, is installed on described pedestal；Described circulation passage can be opened after described pair valve module energising；Described
Described circulation passage can be blocked after secondary valve module power down.
Wherein in an embodiment, described pair valve module include auxiliary blocking part for blocking described circulation passage and
Control the auxiliary controls of described auxiliary blocking part, described auxiliary blocking part is connected with described auxiliary controls；
Described auxiliary controls energising can make described auxiliary blocking part open described circulation passage, described auxiliary controls
Power down can make described auxiliary blocking part block described circulation passage.
Wherein in an embodiment, described pair valve module also includes assisting armature, and described auxiliary controls are boost line
Circle, described auxiliary armature is connected with described auxiliary blocking part；
Described ancillary coil energising can adsorb described armature, makes described armature drive described auxiliary blocking part to open described
Circulation passage.
Wherein in an embodiment, described pair valve module also includes auxiliary elastic member, one end of described auxiliary elastic member
It is fixed in described pair valve module, the other end of described auxiliary elastic member is connected with described auxiliary armature；
Described armature is adsorbed in described ancillary coil energising, and described armature can compress described auxiliary elastic member；
Described ancillary coil power down discharges described armature, and described auxiliary elastic member can drive described armature to reset and make institute
State auxiliary blocking part and block described circulation passage.
Wherein in an embodiment, described ancillary coil is hollow structure, and described auxiliary elastic member is held in the mouth with described auxiliary
Iron is mounted in described ancillary coil；
Described auxiliary armature can drive described auxiliary blocking part to move in described ancillary coil.
Wherein in an embodiment, described auxiliary controls can be electrically connected with control mainboard, and described control mainboard is used
In the energising controlling described auxiliary controls and power down；
And described control mainboard can also adjust the aperture of described main valve assembly；
Described control mainboard controls energising and the power down of described auxiliary controls according to the aperture of described main valve assembly.
Wherein in an embodiment, described auxiliary controls are electrically connected with described control mainboard also by relay.
Further relate to a kind of control method of electronic expansion valve gear, be applied to the electronics as described in any of the above-described technical characteristic
Expansion valve device, including：
The circulation passage of pedestal opened by the main valve assembly of described electronic expansion valve gear；
During the secondary valve module energising of described electronic expansion valve gear, described pair valve module opens described circulation passage；
During described pair valve module power down, described pair valve module blocks described circulation passage.
Wherein in an embodiment, described pair valve module can open or close pedestal circulation passage include as follows
Step：
Control mainboard passes through the auxiliary controls energising of secondary valve module described in Control, and described auxiliary controls can
The auxiliary armature of secondary valve module described in adhesive, makes described auxiliary armature drive the auxiliary blocking part of described pair valve module to open described
Circulation passage；
Described control mainboard can be released by auxiliary controls power down described in described Control, described auxiliary controls
Put described auxiliary armature, make the auxiliary elastic member of described pair valve module drive described auxiliary blocking part to block described circulation passage.
Wherein in an embodiment, the control method of described electronic expansion valve gear also includes：
Described control mainboard adjusts the aperture of described main valve assembly；
Described control mainboard controls energising and the power down of described auxiliary controls according to the aperture of described main valve assembly.
Wherein in an embodiment, described control mainboard controls described auxiliary to control according to the aperture of described main valve assembly
The energising of part and power down comprise the steps：
Described control mainboard can calculate the actual step Numerical of the aperture of described main valve assembly；
Be stored with described control mainboard described main valve assembly aperture default step Numerical, described default step Numerical is institute
State the step Numerical that described circulation passage closed by main valve assembly；
Relatively described default step Numerical and described actual step Numerical；
If described actual step Numerical is more than described default step Numerical, described control mainboard controls described ancillary coil energising；
If described actual step Numerical is less than or equal to described default step Numerical, described control mainboard controls described ancillary coil to fall
Electricity.
Wherein in an embodiment, described control mainboard controls described auxiliary to control according to the aperture of described main valve assembly
The energising of part and power down also comprise the steps：
Sensor can detect real work signal, and described real work signal is fed back to described control mainboard；
Described control mainboard can according to described real work signal of change the aperture of main valve assembly actual step number
Value, to adjust the aperture of described main valve assembly.
Further relate to a kind of multiple on-line system, including multiple indoor sets and multiple electronics as described in any of the above-described technical characteristic
Expansion valve device；
Multiple described electronic expansion valve gears are respectively arranged in multiple described indoor sets.
Wherein in an embodiment, in described indoor set, there is control mainboard, described control mainboard can be with described electricity
The auxiliary controls electrical connection of sub- expansion valve device.
Wherein in an embodiment, it is additionally provided with relay in described indoor set, described relay is arranged at described auxiliary
Help control piece between described control mainboard；
Described control mainboard is by the energising of auxiliary controls and power down described in described Control.
Wherein in an embodiment, described control mainboard can also adjust the aperture of described main valve assembly, described control master
Plate controls energising and the power down of described auxiliary controls according to the aperture of described main valve assembly.
Wherein in an embodiment, the default step number of the aperture of the described main valve assembly that is stored with described control mainboard
Value；
Described control mainboard adjusts the actual step Numerical of the actual step Numerical of aperture of described main valve assembly more than described pre-
If during step Numerical, the auxiliary controls energising of described electronic expansion valve gear；
The actual step Numerical that described control mainboard adjusts the actual step Numerical of aperture of described main valve assembly is less than or equal to institute
When stating default step Numerical, the auxiliary controls power down of described electronic expansion valve gear.
Wherein in an embodiment, in described indoor set, also there is sensor, described sensor and described control mainboard
Electrical connection；
Described sensor can detect the real work signal of described indoor set, and described real work signal is fed back to
Described controller, described controller the opening of the main valve assembly of electronic expansion valve gear according to described real work signal of change
The actual step Numerical of degree, to adjust the aperture of described main valve assembly.
The invention has the beneficial effects as follows：
The electronic expansion valve gear of the present invention, structure design advantages of simple, by the cooperation of main valve assembly and secondary valve module
Realize opening and blocking of circulation passage, and then avoid unevaporated liquid refrigerants to be back in compressor it is ensured that compressor can
By running.Circulation passage can be opened it is ensured that the flowing of liquid refrigerants after the energising of secondary valve module.Main valve group after main valve assembly power down
Part can not block circulation passage, can block circulation passage after secondary valve module power down, so it can be avoided that because of main valve assembly power down
The problem that the circulation passage leading to can not be blocked completely, and then avoid unevaporated liquid refrigerants to cause multiple on-line system to return
Liquid, it is to avoid compressor is subject to liquid hazards it is ensured that the performance of compressor, improves the reliability of compressor operating, and then improves many
On-line system reliability of operation.And, ensure after the blocking of electronic expansion valve gear by secondary valve module, multiple on-line system
Indoor set can be independently-powered, even if also not interfering with the operation of the whole machine of multiple on-line system after indoor set power down, multi-joint in guarantee
While machine system reliability, it is easy to the project installation of multiple on-line system, reduce user installation expense.The electronic expansion of the present invention
Valve gear can block circulation passage after secondary valve module ensures electronic expansion valve gear power down completely, effectively solves at present
In multi-connected machine engineering, the electric expansion valve power down of indoor set is not closed and leads to multiple on-line system liquid problem back it is ensured that compressor
Serviceability, improve multiple on-line system reliability of operation.
Because electronic expansion valve gear has above-mentioned technique effect, it is applied to the control method of above-mentioned electronic expansion valve gear
Also there is corresponding technique effect.
Because electronic expansion valve gear has above-mentioned technique effect, include the multi-connected machine system of above-mentioned electronic expansion valve gear
System also has corresponding technique effect.
Brief description
Fig. 1 is the structural representation of ancillary coil energising in the electronic expansion valve gear of one embodiment of the invention；
Fig. 2 is the structural representation of ancillary coil power down in the electronic expansion valve gear shown in Fig. 1；
Wherein：
100- electronic expansion valve gear；
110- pedestal；
111- circulation passage；
1111- entrance；
1112- exports；
120- main valve assembly；
121- rotor；
122- main coil；
123- main valve stem；
130- pair valve module；
131- assists blocking part；
132- ancillary coil；
133- assists armature；
134- auxiliary elastic member.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, by the following examples, and with reference to attached
Figure, the electronic expansion valve gear to the present invention and its control method and multiple on-line system are further elaborated.Should manage
Solution, specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limit unless otherwise clear and definite.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or can also there is element placed in the middle.When an element is considered as " connection " another element, it is permissible
It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level
", " on ", D score, "left", "right" and similar statement for illustrative purposes only, being not offered as is unique enforcement
Mode.
Referring to Fig. 1 and Fig. 2, the invention provides a kind of electronic expansion valve gear 100, this electronic expansion valve gear 100 energy
Enough flow is adjusted, can be applicable to major part and be related in the equipment of Flow-rate adjustment.In the present embodiment, electric expansion valve dress
Put 100 to be applied in the indoor set of multiple on-line system, control the tune of the flow of liquid refrigerants by electronic expansion valve gear 100
Section.Certainly, in other embodiments of the invention, electronic expansion valve gear 100 can be also used in other equipment.The present invention's
Electronic expansion valve gear 100 can block circulation passage 111, effectively after ensure that electronic expansion valve gear 100 power down completely
The electric expansion valve power down solving the problems, such as indoor set in current multi-connected machine engineering do not close and lead to multiple on-line system that liquid occurs back,
Ensure the serviceability of compressor, improve multiple on-line system reliability of operation.
In one embodiment of this invention, electronic expansion valve gear 100 includes pedestal 110, main valve assembly 120 and secondary valve group
Part 130.Main valve assembly 120 is mounted on pedestal 110 with secondary valve module 130.It is provided with circulation passage 111, stream in pedestal 110
One end of circulation passage 111 is entrance 1111, and the other end of circulation passage 111 is outlet 1112.Liquid refrigerants enters from entrance 1111
Enter through circulation passage 111 and from outlet 1112 outflow.Main valve assembly 120 is used for adjusting the flow of liquid refrigerants, secondary valve module 130
Also can be used in adjusting the flow of liquid refrigerants, and, when main valve assembly 120 can not block circulation passage 111 completely, pass through
Secondary valve module 130 blocks circulation passage 111 completely, and to avoid electronic expansion valve gear 100, in power down, circulation passage 111 can not
It is blocked, and then avoids liquid refrigerants during power down to return liquid problem still through what circulation passage 111 flowing led to, it is to avoid compressor
Damage, improve the reliability of multiple on-line system.In the present embodiment, main valve assembly 120 is arranged near entrance 1111, secondary valve module
130 are arranged away from entrance 1111.That is, main valve assembly 120 than secondary valve module 130 closer to circulation passage 111 entrance
1111, when liquid refrigerants flows in circulation passage 111, liquid refrigerants first contacts main valve assembly 120 Contact Pair valve module again
130, so in electronic expansion valve gear 100 power down, main valve assembly 120 can not block circulation passage 111 completely, by secondary valve
Assembly 130 blocks circulation passage 111 completely, to ensure that electronic expansion valve gear 100 can completely close, it is to avoid unevaporated liquid
State refrigerant returns in compressor, improves the reliability of compressor operating.Meanwhile, secondary valve module 130 energy after secondary valve module 130 energising
Enough open circulation passage 111.At this point it is possible to by by main valve assembly 120 adjust electronic expansion valve gear 100 flow, with
Ensure compressor reliability service it is ensured that the performance of multiple on-line system；After the power down of secondary valve module 130, secondary valve module 130 can block
Circulation passage 111.Now, because secondary valve module 130 shuts circulation passage 111 completely, even if main valve assembly 120 is to shut completely
Can also ensure that electron collision subtraction unit thoroughly blocks closing.
Further, main valve assembly 120 includes main coil 122, rotor 121 and main valve stem 123, and rotor 121 is sheathed on master
On valve rod 123, and it is installed in main coil 122.Main valve assembly 120 controlling party with conventional air conditioning system in multiple on-line system
Formula is identical, and mainly the degree of superheat according to multiple on-line system is controlling driving pulse to carry out Flow-rate adjustment.But, when indoor set power down
When, main valve stem 123 can not block circulation passage 111, then leads to still have liquid refrigerants to exist during electronic expansion valve gear 100 power down
Flow in circulation passage 111, the reliability service of impact compressor.Therefore, the electronic expansion valve gear 100 of the present invention passes through to increase
Secondary valve module 130 ensures the reliability of compressor operating during power down.When indoor set power down, the power down of secondary valve module 130, now,
Secondary valve module 130 can block circulation passage 111 so that liquid refrigerants can not be flowed by circulation passage 111, and then avoids liquid
State refrigerant is flowed in compressor.
At present, returned liquid for solving the problems, such as multi-connected machine by what independent cut-out led to, when in engineering generally using separately powering,
Run into and can execute protection under more indoor set power-down conditions, in case the control of non-return liquid.But, this solution is by inspection
Survey a number of indoor set communication to go offline thus judging its power down and report protection to shut down, this mode having certain limitation, such as
How much interior machine is suitable for detection？If less than normal, frequently protection may be reported, on the high side, then may protect not in place.So, indoor set divides
When opening power supply, once multiple indoor set power down such as floor maintenance or multiple indoor set occur when not in use, then leading to multi-joint
The protection of machine whole machine is shut down and is not worked, thus the use affecting other room air conditioners is not particularly good especially for hotel experience, if many
Online whole machine not stoppage protection when, then multi-connected machine occurs back liquid problem, the reliability service of impact multi-connected machine.The electronics of the present invention
Expansion valve device 100 realizes opening and blocking of circulation passage 111 by the cooperation of main valve assembly 120 and secondary valve module 130, enters
And avoid unevaporated liquid refrigerants to be back in compressor it is ensured that compressor reliability service.Can after secondary valve module 130 energising
Open circulation passage 111 it is ensured that the flowing of liquid refrigerants.After main valve assembly 120 power down, main valve assembly 120 can not block circulation and lead to
Road 111, can block circulation passage 111 after the power down of secondary valve module 130, so it can be avoided that because main valve assembly 120 power down leads to
The problem that can not be blocked completely of circulation passage 111, and then avoid unevaporated liquid refrigerants to cause multiple on-line system to return
Liquid, it is to avoid compressor is subject to liquid hazards it is ensured that the performance of compressor, improves the reliability of compressor operating, and then improves many
On-line system reliability of operation.And, ensure after the blocking of electronic expansion valve gear 100 by secondary valve module 130, multi-connected machine
The indoor set of system can be independently-powered, even if also not interfering with the operation of the whole machine of multiple on-line system after indoor set power down, is protecting
While card multiple on-line system reliability, it is easy to the project installation of multiple on-line system, reduce user installation expense.The electricity of the present invention
Sub- expansion valve device 100 can block circulation passage after secondary valve module 130 ensures electronic expansion valve gear 100 power down completely
111, the effective electric expansion valve power down solving indoor set in current multi-connected machine engineering is not closed and leads to multiple on-line system to occur
Return liquid problem it is ensured that the serviceability of compressor, improve multiple on-line system reliability of operation.
As a kind of embodiment, secondary valve module 130 includes the auxiliary blocking part 131 for blocking circulation passage 111
And controlling the auxiliary controls assisting blocking part 131, auxiliary blocking part 131 is connected with auxiliary controls.Auxiliary blocking part 131 hinders
After cutout circulation passage 111, auxiliary blocking part 131 can be abutted with the inwall of circulation passage 111, so that liquid refrigerants can not pass through
Circulation passage 111 flows.Auxiliary controls be used to control auxiliary blocking part 131 motion, auxiliary controls pass through energising or
The mode of person's power down controls auxiliary blocking part 131 to move.It is logical that auxiliary controls energising can make auxiliary blocking part 131 open circulation
Road 111, auxiliary controls power down can make auxiliary blocking part 131 block circulation passage 111.Auxiliary blocking part 131 can block
Or open circulation passage 111.Although main valve assembly 120 maintains because of indoor set power down after the indoor set power down of multiple on-line system
In fixing aperture, but the auxiliary controls power down of secondary valve module 130 and then enable to assist blocking part 131 to block circulation and lead to
Road 111, can avoid unevaporated liquid refrigerants to return in compressor it is ensured that the serviceability of compressor, then improve multi-joint
The reliability of machine system operation.In the present invention, auxiliary blocking part 131 be valve rod, catch or other be capable of block stream
The structure of circulation passage 111.
Further, in the present embodiment, auxiliary controls are ancillary coil 132, and secondary valve module 130 also includes auxiliary rank
Iron 133, auxiliary armature 133 is connected with auxiliary blocking part 131.Ancillary coil 132 energising can adsorb armature, so that armature is driven auxiliary
Blocking part 131 is helped to open circulation passage 111.Certainly, in other embodiments of the invention, auxiliary controls can be also electromagnet
Or the structure of auxiliary blocking part 131 motion can be controlled after other energisings.When multiple on-line system is normally run, at indoor set
After "on" position, ancillary coil 132 energising, excitation effect can be produced by flowing through the electric current of ancillary coil 132, so auxiliary
Index contour circle 132 adhesive can assist armature 133, and auxiliary armature 133 band dynamic auxiliary blocking part 131 moves and led to opening circulation simultaneously
Road 111, now, liquid refrigerants can flow in circulation passage 111, and, the flow of electronic expansion valve gear 100 passes through master
Valve module 120 is adjusted.After indoor set power-off, ancillary coil 132 power down, now ancillary coil 132 release auxiliary armature 133,
Auxiliary armature 133 can carry dynamic auxiliary blocking part 131 to block circulation passage 111 downwards, although now main valve assembly 120 is because of interior
Machine power down maintains fixing aperture, but the auxiliary controls power down of secondary valve module 130 and then enable auxiliary blocking part 131
Block circulation passage 111, unevaporated liquid refrigerants can be avoided to return in compressor it is ensured that the serviceability of compressor, continue
And improve multiple on-line system reliability of operation.
Yet further, secondary valve module 130 also includes auxiliary elastic member 134, and pair is fixed in one end of auxiliary elastic member 134
In valve module 130, the other end of auxiliary elastic member 134 is connected with auxiliary armature 133.Ancillary coil 132 energising absorption armature, rank
Iron can compress auxiliary elastic member 134.Ancillary coil 132 power down discharges armature, and auxiliary elastic member 134 can carry moving armature to reset
And make auxiliary blocking part 131 block circulation passage 111.Auxiliary elastic member 134 can be used in auxiliary resistance after ancillary coil 132 power down
Broken piece 131 automatically resets it is ensured that secondary valve module 130 is reliable.When multiple on-line system is normally run, indoor set is in energising
State, after ancillary coil 132 energising, can produce excitation effect, such ancillary coil by flowing through the electric current of ancillary coil 132
132 adhesive can assist armature 133, and auxiliary armature 133 band dynamic auxiliary blocking part 131 moves to open circulation passage 111 simultaneously,
Now, auxiliary armature 133 compression auxiliary elastic member 134.After indoor set power-off, ancillary coil 132 power down, now ancillary coil
132 release auxiliary armature 133, auxiliary armature 133 falls to resetting in the presence of being subject to ancillary coil 132 elastic force, assists armature simultaneously
133 band dynamic auxiliary blocking parts 131 block downwards circulation passage 111, to avoid unevaporated liquid refrigerants to return in compressor, protect
The serviceability of card compressor, improves multiple on-line system reliability of operation then.In the present embodiment, auxiliary elastic member 134
For spring.Certainly, in other embodiments of the invention, auxiliary elastic member 134 can also have the structure of elastic force for other.
In the present invention, one end of auxiliary elastic member 134 can be fixed on static parts in secondary valve module 130.
It is preferred that in the present embodiment, ancillary coil 132 is hollow structure, auxiliary elastic member 134 and auxiliary armature 133
It is mounted in ancillary coil 132.Auxiliary armature 133 can carry dynamic auxiliary blocking part 131 to move in ancillary coil 132.This
Sample ensure that ancillary coil 132 produces enough magnetic field adhesive auxiliary armature 133, simultaneously moreover it is possible to ensure auxiliary armature 133 with
The running orbit of auxiliary blocking part 131, it is to avoid glance off.And, the structure letter of the electronic expansion valve gear 100 of the present invention
Single, it is easily installed.
As a kind of embodiment, auxiliary controls can be electrically connected with control mainboard, and control mainboard is used for controlling auxiliary
Help energising and the power down of control piece.The energising of ancillary coil 132 and power down are must electric realize with dead electricity by control mainboard.
Control mainboard is the master control unit of indoor set.When multiple on-line system normal work, the control mainboard of indoor set obtain electric, now,
Control mainboard is capable of auxiliary controls energising, then realizes auxiliary blocking part 131 and opens circulation passage 111.Work as indoor set
During power-off, control mainboard dead electricity leads to auxiliary controls power down, and then assists blocking part 131 can block circulation passage 111, keeps away
Exempt from unevaporated liquid refrigerants to be back in compressor it is ensured that the serviceability of compressor, improve the reliability of multiple on-line system.
Further, auxiliary controls are electrically connected with control mainboard also by relay.
Meanwhile, control mainboard can also adjust the aperture of main valve assembly 120, and, control mainboard can be according to main valve assembly
120 aperture controls energising and the power down of auxiliary controls.When multiple on-line system is normally run, it is typically based on indoor set itself
Control when closing electronic expansion valve gear 100 such as refrigeration under special circumstances and reaching preset temperature, make electronic expansion valve gear 100
It is in the state of shutting.But, the use time with electronic expansion valve gear 100 lengthens, and may exist and close not dead situation.
Therefore, by secondary valve module 130, the electronic expansion valve gear 100 of the present invention ensures that electronic expansion valve gear 100 makes for a long time
Blocking it is ensured that the reliability of electronic expansion valve gear 100 of used time, ensures the serviceability of multiple on-line system then.
The electronic expansion valve gear 100 of the present invention has default step Numerical, and default step Numerical is main valve group set in advance
Part 120 closes the step Numerical of circulation passage 111.Control mainboard can adjust the actual step Numerical of the aperture of main valve assembly 120.Logical
That crosses actual step Numerical and default step Numerical relatively can interpolate that electronic expansion valve gear 100 is in the state of blocking and is in
Open mode.Relatively actual step Numerical and default step Numerical, when actual step Numerical is more than default step Numerical, ancillary coil 132
Energising, and flow is adjusted by main valve assembly 120；When actual step Numerical is less than or equal to default step Numerical, ancillary coil 132 falls
Electricity, so that auxiliary blocking part 131 blocks circulation passage 111 completely, now, even if main valve assembly 120 is to shut completely, but by
Auxiliary blocking part 131 in secondary valve module 130 blocks circulation passage 111 completely it can be ensured that electronic expansion valve gear 100 thoroughly cuts
Disconnected, it is to avoid liquid refrigerant circulates, improve the serviceability of multiple on-line system.Meanwhile, control mainboard can adjust main valve assembly
The actual step Numerical of 120 aperture is to be obtained according to the real work signal that sensor detects indoor set.Indoor set is according to biography
Sensor detects real work signal, and real work signal is fed back to control mainboard, and control mainboard is according to real work signal
Adjust the actual step Numerical of the aperture of main valve assembly 120.
Generally, the action step number of the break-in facility of electric expansion valve can be selected according to the requirement of different multiple on-line system
Select.Such as, it is generally acknowledged that 0 step following electronic expansion valve gear 100 is to shut state in some multiple on-line system, then preset step
Numerical value is 0 step, then can be energized according to the following ancillary coil of 0 step 132 power down, the above ancillary coil of 0 step 132 when judging.Again such as,
It is generally acknowledged that 50 steps following electronic expansion valve gear 100 is to shut state in some multiple on-line system, then presetting step Numerical is
50 steps, then can be energized according to the following ancillary coil of 50 steps 132 power down, the above ancillary coil of 50 steps 132 when judging.Logical swollen by electronics
The flow formula of swollen valve gear 100 understands, in the step number being located less than turning point, electronic expansion valve gear 100 begins to locate
In the state of blocking.
Present invention also offers a kind of control method of electronic expansion valve gear 100, it is applied to the electricity in above-described embodiment
Sub- expansion valve device 100, including：
The circulation passage 111 of pedestal 110 opened by the main valve assembly 120 of electronic expansion valve gear 100；
During secondary valve module 130 energising of electronic expansion valve gear 100, secondary valve module 130 opens circulation passage 111；
During secondary valve module 130 power down, secondary valve module 130 blocks circulation passage 111.
Circulation passage 111 is blocked completely by the secondary valve module 130 of electronic expansion valve gear 100, to ensure electronic expansion
Valve gear 100 can completely close, even if main valve assembly 120 is to shut to can also ensure that electron collision subtraction unit thoroughly cuts completely
Disconnected closing, it is to avoid unevaporated liquid refrigerants returns in compressor, improves the reliability of compressor operating.
Further, secondary valve module 130 can be opened or close the circulation passage 111 of pedestal 110 and be comprised the steps：
, by the auxiliary controls energising of Control pair valve module 130, auxiliary controls being capable of adhesive for control mainboard
The auxiliary armature 133 of secondary valve module 130, makes auxiliary armature 133 drive the auxiliary blocking part 131 of secondary valve module 130 to open circulation
Passage 111；
Control mainboard passes through Control auxiliary controls power down, and auxiliary controls can discharge auxiliary armature 133, makes
The auxiliary elastic member 134 band dynamic auxiliary blocking part 131 of secondary valve module 130 blocks circulation passage 111.
Electronic expansion valve gear 100 controls energising and the power down of auxiliary controls by control mainboard, can be easy to electronics
Opening and blocking of expansion valve device 100, improves the reliability of electronic expansion valve gear 100.And, electricity is realized by empty mainboard
The control of sub- expansion valve device 100, programme-control is simple, controller that need not be extra, reduces cost.
As a kind of embodiment, the control method of electronic expansion valve gear 100 also includes：
Control mainboard adjusts the aperture of main valve assembly 120；
Control mainboard controls energising and the power down of auxiliary controls according to the aperture of main valve assembly 120.
Electronic expansion valve gear 100 adjusts the aperture between blocking part and circulation passage 111 by control mainboard and can protect
Card electronic expansion valve gear 100 using safety, extends the service life of electronic expansion valve gear 100 for a long time.
Further, the aperture adjusting between auxiliary blocking part 131 and circulation passage 111 comprises the steps：
Control mainboard controls the energising of auxiliary controls to comprise the steps with power down according to the aperture of main valve assembly 120：
Control mainboard can calculate the actual step Numerical of the aperture of main valve assembly 120；
Be stored with control mainboard main valve assembly 120 aperture default step Numerical, default step Numerical be described main valve group
Part 120 closes the step Numerical of circulation passage 111；
Relatively more default step Numerical and actual step Numerical；
If actual step Numerical is more than default step Numerical, control mainboard controls ancillary coil 132 to be energized；
If actual step Numerical is less than or equal to default step Numerical, control mainboard controls ancillary coil 132 power down.
When actual step Numerical is more than default step Numerical, ancillary coil 132 is energized, and adjusts stream by main valve assembly 120
Amount, electronic expansion valve gear 100 normal work；When actual step Numerical is less than or equal to default step Numerical, ancillary coil 132 falls
Electricity, so that auxiliary blocking part 131 blocks circulation passage 111 completely, now, even if main valve assembly 120 is to shut completely, but by
Auxiliary blocking part 131 in secondary valve module 130 blocks circulation passage 111 completely it can be ensured that electronic expansion valve gear 100 thoroughly cuts
Disconnected, it is to avoid liquid refrigerant circulates, improve the serviceability of multiple on-line system.
Yet further, the energising that control mainboard controls auxiliary controls according to the aperture of main valve assembly 120 is with power down also
Comprise the steps：
Sensor can detect real work signal, and real work signal is fed back to control mainboard；
Control mainboard can be according to the actual step Numerical of the aperture of real work signal of change main valve assembly 120, to adjust
The aperture of main valve assembly 120.
The actual step Numerical that control mainboard can adjust the aperture of main valve assembly 120 is to detect indoor set according to sensor
Real work signal obtains.Indoor set detects real work signal according to sensor, and real work signal is fed back to control
Mainboard processed, control mainboard obtains the actual step Numerical of the aperture of main valve assembly 120 according to real work signal, adjusts main valve assembly
120 aperture.
Present invention also offers a kind of multiple on-line system, swollen including the electronics in multiple indoor sets and multiple above-described embodiment
Swollen valve gear 100.Multiple electronic expansion valve gears 100 are respectively arranged in multiple indoor sets.The multiple on-line system of the present invention is led to
Cross electronic expansion valve gear 100 and avoid that liquid problem occurs back during power down, it is to avoid compressor damage, improve what multiple on-line system was run
Reliability.And, multiple indoor sets can be independently-powered, even if part indoor set power down does not interfere with the whole machine of multiple on-line system yet
Run.
Further, there is in indoor set control mainboard, control mainboard can be with the auxiliary control of electronic expansion valve gear 100
Product electrically connects.Control mainboard is the master control unit of indoor set, when multiple on-line system normal work, the control mainboard of indoor set
Obtain electric, now, control mainboard is capable of auxiliary controls energising, then realize auxiliary blocking part 131 and open circulation passage
111.When indoor set power-off, control mainboard dead electricity leads to auxiliary controls power down, and then assists blocking part 131 can block stream
Circulation passage 111, it is to avoid unevaporated liquid refrigerants is back in compressor it is ensured that the serviceability of compressor, improves multi-connected machine
The reliability of system.Yet further, it is additionally provided with relay in indoor set, relay is arranged at auxiliary controls in control master
Between plate.Control mainboard passes through energising and the power down of Control auxiliary controls.And, control mainboard can also adjust main valve
The aperture of assembly 120, control mainboard controls energising and the power down of auxiliary controls according to the aperture of main valve assembly 120.
And, the default step Numerical of the aperture of the main valve assembly 120 that is stored with control control mainboard.Control mainboard adjusts main valve
When the actual step Numerical of the actual step Numerical of the aperture of assembly 120 is more than default step Numerical, the auxiliary of electronic expansion valve gear 100
Control piece is energized.The actual step Numerical that control mainboard adjusts the actual step Numerical of aperture of main valve assembly 120 is less than or equal to preset
During step Numerical, the auxiliary controls power down of electronic expansion valve gear 100.Control mainboard adjusts the reality of the aperture of main valve assembly 120
When border step Numerical is less than or equal to default step Numerical, the auxiliary controls power down of electronic expansion valve gear 100, so that auxiliary blocking part
131 block circulation passage 111 completely, now, even if main valve assembly 120 is to shut completely, but auxiliary due to secondary valve module 130
Blocking part 131 is helped to block circulation passage 111 it can be ensured that electronic expansion valve gear 100 thoroughly blocks completely, it is to avoid liquid refrigerant
Circulation, improves the serviceability of multiple on-line system.
Further, also there is in indoor set sensor, sensor is electrically connected with control mainboard.Sensor can detect
The real work signal of indoor set, and real work signal is fed back to controller, controller is according to real work signal of change
The aperture to adjust main valve assembly 120 for the actual step Numerical of the aperture of main valve assembly 120 of electronic expansion valve gear 100.Pass through
Sensor detects the real work signal of indoor set, and in the present embodiment, real work signal refers to the actual temperature of indoor set,
Sensor is temperature sensor.The signal of actual temperature can be fed back to control mainboard by sensor, and control mainboard is according to reality
The aperture of the Signal Regulation main valve assembly 120 of temperature, to ensure the cryogenic temperature of indoor set, it is to avoid occurs excessively freezing, improves
Comfort level when user uses.
Above example only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but can not
Therefore it is interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the protection model of the present invention
Enclose.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (18)
1. a kind of electronic expansion valve gear is it is characterised in that include：
Pedestal (110), is provided with circulation passage (111) in described pedestal (110)；
Main valve assembly (120), is installed on described pedestal (110)；And
Secondary valve module (130), is installed on described pedestal (110)；Described stream can be opened after described pair valve module (130) energising
Circulation passage (111)；Described circulation passage (111) can be blocked after valve module (130) power down of described pair.
2. electronic expansion valve gear according to claim 1 it is characterised in that described pair valve module (130) include for
Block the auxiliary blocking part (131) of described circulation passage (111) and the auxiliary controls controlling described auxiliary blocking part (131),
Described auxiliary blocking part (131) is connected with described auxiliary controls；
Described auxiliary controls energising can make described auxiliary blocking part (131) open described circulation passage (111), described auxiliary
Control piece power down can make described auxiliary blocking part (131) block described circulation passage (111).
3. electronic expansion valve gear according to claim 2 it is characterised in that described pair valve module (130) also include auxiliary
Help armature (133), described auxiliary controls be ancillary coil (132), described auxiliary armature (133) with described auxiliary blocking part
(131) connect；
Described ancillary coil (132) energising can adsorb described armature, makes described armature drive described auxiliary blocking part (131) to beat
Open described circulation passage (111).
4. electronic expansion valve gear according to claim 3 it is characterised in that described pair valve module (130) also include auxiliary
Help elastic component (134), one end of described auxiliary elastic member (134) is fixed in described pair valve module (130), described assistant spring
The other end of part (134) is connected with described auxiliary armature (133)；
Described armature is adsorbed in described ancillary coil (132) energising, and described armature can compress described auxiliary elastic member (134)；
Described ancillary coil (132) power down discharges described armature, and described auxiliary elastic member (134) can drive described armature to reset
And make described auxiliary blocking part (131) block described circulation passage (111).
5. electronic expansion valve gear according to claim 4 is it is characterised in that described ancillary coil (132) is tied for hollow
Structure, described auxiliary elastic member (134) is mounted in described ancillary coil (132) with described auxiliary armature (133)；
Described auxiliary armature (133) can drive the motion in described ancillary coil (132) of described auxiliary blocking part (131).
6. electronic expansion valve gear according to claim 2 is it is characterised in that described auxiliary controls can be led with controlling
Plate electrically connects, and described control mainboard is used for controlling energising and the power down of described auxiliary controls；
And described control mainboard can also adjust the aperture of described main valve assembly (120)；
Described control mainboard controls energising and the power down of described auxiliary controls according to the aperture of described main valve assembly (120).
7. electronic expansion valve gear according to claim 6 is it is characterised in that described auxiliary controls are also by relay
Electrically connect with described control mainboard.
8. a kind of control method of electronic expansion valve gear is it is characterised in that be applied to as described in any one of claim 1 to 7
Electronic expansion valve gear (100), including：
The circulation passage (111) of pedestal (110) opened by the main valve assembly (120) of described electronic expansion valve gear (100)；
During secondary valve module (130) energising of described electronic expansion valve gear (100), described pair valve module (130) opens described stream
Circulation passage (111)；
During described pair valve module (130) power down, described pair valve module (130) blocks described circulation passage (111).
9. electronic expansion valve gear according to claim 8 control method it is characterised in that described pair valve module
(130) can open or close the circulation passage (111) of pedestal (110) and comprise the steps：
Control mainboard passes through the auxiliary controls energising of secondary valve module (130) described in Control, described auxiliary controls energy
The auxiliary armature (133) of secondary valve module (130) described in enough adhesives, makes described auxiliary armature (133) drive described pair valve module
(130) auxiliary blocking part (131) opens described circulation passage (111)；
Described control mainboard can discharge institute by auxiliary controls power down described in described Control, described auxiliary controls
State auxiliary armature (133), make the auxiliary elastic member (134) of described pair valve module (130) drive described auxiliary blocking part (131) resistance
Disconnected described circulation passage (111).
10. the control method of electronic expansion valve gear according to claim 9 is it is characterised in that also include：
Described control mainboard adjusts the aperture of described main valve assembly (120)；
Described control mainboard controls energising and the power down of described auxiliary controls according to the aperture of described main valve assembly (120).
The control method of 11. electronic expansion valve gears according to claim 10 is it is characterised in that described control mainboard root
The energising of described auxiliary controls is controlled to comprise the steps with power down according to the aperture of described main valve assembly (120)：
Described control mainboard can calculate the actual step Numerical of the aperture of described main valve assembly (120)；
Be stored with described control mainboard described main valve assembly (120) aperture default step Numerical, described default step Numerical is
Described main valve assembly (120) closes the step Numerical of described circulation passage (111)；
Relatively described default step Numerical and described actual step Numerical；
If described actual step Numerical is more than described default step Numerical, described control mainboard controls described ancillary coil (132) energising；
If described actual step Numerical is less than or equal to described default step Numerical, described control mainboard controls described ancillary coil (132)
Power down.
The control method of 12. electronic expansion valve gears according to claim 11 is it is characterised in that described control mainboard root
The energising of described auxiliary controls is controlled also to comprise the steps with power down according to the aperture of described main valve assembly (120)：
Sensor can detect real work signal, and described real work signal is fed back to described control mainboard；
Described control mainboard can according to described real work signal of change the aperture of main valve assembly (120) actual step number
Value, to adjust the aperture of described main valve assembly (120).
A kind of 13. multiple on-line system are it is characterised in that include as described in multiple indoor sets and multiple any one as claim 1 to 7
Electronic expansion valve gear (100)；
Multiple described electronic expansion valve gears (100) are respectively arranged in multiple described indoor sets.
14. multiple on-line system according to claim 13 it is characterised in that there is control mainboard in described indoor set, institute
State control mainboard to electrically connect with the auxiliary controls of described electronic expansion valve gear (100).
15. multiple on-line system according to claim 14 it is characterised in that being additionally provided with relay in described indoor set,
Described relay is arranged at described auxiliary controls between described control mainboard；
Described control mainboard is by the energising of auxiliary controls and power down described in described Control.
16. multiple on-line system according to claim 15 are it is characterised in that described control mainboard can also adjust described main valve
The aperture of assembly (120), described control mainboard controls the logical of described auxiliary controls according to the aperture of described main valve assembly (120)
Electricity and power down.
17. multiple on-line system according to claim 16 are it is characterised in that the described main valve that is stored with described control mainboard
The default step Numerical of the aperture of assembly (120)；
Described control mainboard adjusts the actual step Numerical of the actual step Numerical of aperture of described main valve assembly (120) more than described pre-
If during step Numerical, the auxiliary controls energising of described electronic expansion valve gear (100)；
The actual step Numerical that described control mainboard adjusts the actual step Numerical of aperture of described main valve assembly (120) is less than or equal to institute
When stating default step Numerical, the auxiliary controls power down of described electronic expansion valve gear (100).
18. multiple on-line system according to claim 17 are it is characterised in that also have sensor, institute in described indoor set
State sensor to electrically connect with described control mainboard；
Described sensor can detect the real work signal of described indoor set, and described real work signal is fed back to described
Controller, the main valve assembly of described controller electronic expansion valve gear (100) according to described real work signal of change
(120) the actual step Numerical of aperture, to adjust the aperture of described main valve assembly (120).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611024874.6A CN106439171B (en) | 2016-11-14 | 2016-11-14 | Electronic expansion valve device, control method thereof and multi-split system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611024874.6A CN106439171B (en) | 2016-11-14 | 2016-11-14 | Electronic expansion valve device, control method thereof and multi-split system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20220654U1 (en) * | 2002-10-18 | 2004-02-12 | Karl Dungs Gmbh & Co. Kg | Proportional control gas valve has a double valve layout with a solenoid shut off valve and a proportional valve driven by a linear motor with a spring return sufficiently strong to close the valve on loss of control power |
| CN1496460A (en) * | 2001-03-06 | 2004-05-12 | G. | Control device |
| CN201284871Y (en) * | 2008-08-08 | 2009-08-05 | 浙江三花股份有限公司 | Pilot type solenoid valve |
| CN104728483A (en) * | 2013-12-20 | 2015-06-24 | 杭州三花研究院有限公司 | Flow control valve and control method thereof and refrigeration system |
| CN206206742U (en) * | 2016-11-14 | 2017-05-31 | 珠海格力电器股份有限公司 | Electronic expansion valve device and multi-split system |
-
2016
- 2016-11-14 CN CN201611024874.6A patent/CN106439171B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1496460A (en) * | 2001-03-06 | 2004-05-12 | G. | Control device |
| DE20220654U1 (en) * | 2002-10-18 | 2004-02-12 | Karl Dungs Gmbh & Co. Kg | Proportional control gas valve has a double valve layout with a solenoid shut off valve and a proportional valve driven by a linear motor with a spring return sufficiently strong to close the valve on loss of control power |
| CN201284871Y (en) * | 2008-08-08 | 2009-08-05 | 浙江三花股份有限公司 | Pilot type solenoid valve |
| CN104728483A (en) * | 2013-12-20 | 2015-06-24 | 杭州三花研究院有限公司 | Flow control valve and control method thereof and refrigeration system |
| CN206206742U (en) * | 2016-11-14 | 2017-05-31 | 珠海格力电器股份有限公司 | Electronic expansion valve device and multi-split system |
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| Publication number | Publication date |
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| CN106439171B (en) | 2019-07-05 |
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