CN102878733B - A kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve - Google Patents
A kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve Download PDFInfo
- Publication number
- CN102878733B CN102878733B CN201210418305.5A CN201210418305A CN102878733B CN 102878733 B CN102878733 B CN 102878733B CN 201210418305 A CN201210418305 A CN 201210418305A CN 102878733 B CN102878733 B CN 102878733B
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- spool
- valve
- valve body
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- F25B41/38—Expansion means; Dispositions thereof specially adapted for reversible cycles, e.g. bidirectional expansion restrictors
-
- 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
- F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
-
- 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
- F25B41/325—Expansion valves having two or more valve members
Abstract
The invention provides a kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve, belong to refrigerating of convertible frequency air conditioner technical field.It solve the frequent and problem that causes reduce the service life of valve of existing spool and the prooving of valve seat.This Bi-direction circulation expansion valve comprises the valve block with two passages parallel to each other; each passage has entrance point and the port of export; each port of export place is all connected with the expansion valve component with damping structure; valve block offers the by-pass prot that the outlet of the expansion valve component on a passage is connected with the entrance point of another passage, be also welded with the protective cover leaked when preventing medium from flowing through between by-pass prot and outlet at port of export place.Two expansion valve component are arranged in parallel, and realize two-way circulating function, damping structure decreases the motion of spool, improve service life and the Energy Efficiency Ratio of expansion valve component, are of great importance for energy-saving and emission-reduction.
Description
Technical field
The invention belongs to air-conditioning technical field, relate to a kind of refrigerating of convertible frequency air conditioner machine automatization expansion valve, particularly a kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve.
Background technology
The large parts of compressor, condenser, expansion valve, evaporimeter four constitute refrigeration system jointly.Expansion valve is a vitals in refrigeration system, is generally installed between condenser and evaporimeter.Expansion valve can make to liquefy to the liquid refrigerant of HTHP through the gas of evaporator evaporation by compressor boost, and the vaporific liquid refrigerant of low-temp low-pressure is become by its restriction throttling, then cold-producing medium absorbs heat and reaches refrigeration in evaporimeter.Expansion valve carrys out by-pass valve control flow by the degree of superheat change of evaporimeter end, prevents and produces liquid impact because the underutilization of flow too small evaporator area and the not enough refrigerant vapor of the too much evaporator area of flow not exclusively suck compressor.Idle call expansion valve is divided into mechanical swelling valve and electric expansion valve, existing convertible frequency air-conditioner mainly utilizes electric expansion valve to pass through to regulate latus rectum to control pressure reduction, reach and control refrigerant liquefaction and gasification by designing requirement, some air-conditioning also useful mechanical swelling valve to replace electronic valve.
Electronic valve controls electronic valve latus rectum size by data signal drive motors, ensures there is constant pressure differential before and after valve, give full play to the effect of condenser and evaporimeter.Simultaneously due to the timely adjustment motor speed that the frequency conversion of compressor electric motor rotating speed is adjustable, such compressor electric motor rotating speed and electric expansion valve motor corner can synchronously change, and ensure that the pressure reduction before and after electronic valve is constant, so conditioner efficiency is very high.
But because electronic valve price comparison is expensive, so also there is capillary to replace electronic expansion, then replace common compressor with frequency-changeable compressor, before and after capillary, pressure differential off-design requires just to change frequency-changeable compressor rotating speed like this, and pressure differential before and after capillary is met design requirement.
As a kind of bidirectional flow heat expansion valve [patent No.: 200510048901.9 that Chinese patent is announced, notification number: CN1804440], comprise valve body and power head part, valve body offers first interface and the second interface, the valve port being communicated with first interface and the second interface is offered in valve body, be provided with by regulating spring and the valve hole part of transmission lever relative support obtaining power from power head part in the downside of valve port, it is characterized in that described valve hole part offering the throttle orifice being communicated with first interface and the second interface, be built-in with at this throttle orifice and this throttle orifice is remained on movable part that is unimpeded or closed state.Throttle orifice wherein coordinates the one-way throttle structure forming heating power expansion valve inside with movable part, be similar to an one-way throttle valve, the existence of this structure makes heating power expansion valve to two-way circulate, when being applied in air-conditioning system, convenient installation, decrease the potential leakage point brought because weld seam quantity more, and reduce the manufacturing cost of air-conditioning system.But although this Bi-direction circulation expansion valve can realize two-way circulating, not two-way circulating truly.Because this valve is only when forward circulates, realized the bore change of valve by the change of temperature-sensitive bag temperature sensor.And can only by the throttle orifice circulation on valve core during reverse circulated, the bore of valve can not change, and adds resistance unnecessary when cold-producing medium circulates, and increases the energy consumption of air conditioner.And time oppositely, throttle orifice is by movable part shutoff, and spool must be open and could circulate, and causes spool frequent impact under spring action like this, reduces the service life of valve.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, proposing a kind of is latus rectum by controlling compressor output flow instant control valve, and can ensure that the single ported thermostatic expansion valve of the pressure differential before and after valve is as original heating power expansion valve, and be connected to form Bi-direction circulation expansion valve in groups by this single ported thermostatic expansion valve.
Object of the present invention realizes by following technical proposal: a kind of expansion valve component, comprise the valve body with import and outlet, the valve seat be fixed in valve body, spool and make spool have spring to valve seat mobile trend, it is characterized in that, described spool has cone shape head, described valve seat offers the taper hole matched with poppet head, between described spool and valve seat, be provided with the damping structure can with cushioning effect.
Cold-producing medium enters in valve body from import, the gap between spool and valve seat, discharges from the outlet of valve body.Owing to designing the inner chamber of a relative closure between valve body and spool on spool mobile route, therefore produce damping when spool can be made to move.Due to the existence of damping, so there is a buffering course when spool moves, reduce the impact of spool, decrease cone shape head and valve seat on spool against time wearing and tearing, improve the service life of expansion valve component.
In above-mentioned expansion valve component, described valve body is straight-tube shape, and import is positioned at the port of straight-tube shape valve body, and outlet is opened on the sidewall of valve body, the afterbody of described spool has the cylinder very little with valve body fit clearance and damping annular groove, and described damping annular groove is equipped with the damping ring of an opening.Valve body, between valve core and damping ring formed after damping cavity.
In above-mentioned expansion valve component, the head of described spool has front cylinder, prosthomere flow cone, transition cone, rear cylinder, deutomerite flow cone successively, and the taper hole of described valve seat has to match with poppet head front cylindrical hole, prosthomere flow cone hole, transmission groove, rear cylindrical hole and deutomerite flow cone hole successively.Damping cavity before being formed between valve seat and spool, make spool travel forward shutoff valve time have reasonable buffering, reduce the impact of spool, the life-span of raising valve.
In above-mentioned expansion valve component, described damping structure comprises three circulation passage be opened in spool, and described threeway passage end can be connected with transmission groove, and the other end can be connected with the outlet of valve body, also has one end can be connected with the rear damping cavity of valve body.Described valve seat also offers the throttling pore being communicated with transmission groove and channel entrance end.When cold-producing medium is less, spool is motionless, and cold-producing medium enters in transmission groove, then through the outlet of valve body from throttling pore.The inner chamber that cold-producing medium transfers the pressure to valve body by aperture simultaneously forms pressure, make the import of inner chamber and valve body and outlet reach pressure differential to balance, there is reasonable cushioning effect when spool is lifted off a seat, prevent spring because of the raw vibration of wink movable property, reduce the noise of spring.
In above-mentioned expansion valve component, in described throttling pore, stud with capillary.Capillary is a small-bore pipe having specific length, predetermined Pressure Drop can be produced in refrigeration systems, capillary relies on its flow resistance to produce Pressure Drop along its length, control the flow of cold-producing medium and maintain the pressure reduction of condenser and evaporimeter, can ensure that different refrigeration arranges minimum continuous cooling.
In above-mentioned expansion valve component, described throttling pore is also plugged with straight tube.The caliber of straight tube is less than the aperture of throttling pore, so can adjust according to actual conditions, after loading onto straight tube, the flow of cold-producing medium diminishes.
In above-mentioned expansion valve component, the intracavity bottom of described valve body is fixed with spring base, and described spring one end is resisted against on spring base, and the other end is resisted against on spool, described spring base has the gag lever post that restraining spring swings.After increasing gag lever post, the circuit oscillation amplitude of spring tails off, and ensures that spring can not work overloadingly, improves spring life.
Alternatively, in above-mentioned expansion valve component, described damping structure comprises three circulation passage be opened in spool, and described threeway passage end can be connected with transmission groove, the other end can be connected with the outlet of valve body, also have one end can with the intracavity inter-connection of valve body.Cold-producing medium in passage, after accumulating to certain pressure, just can push spool open, and spool moves and to be a bit ofly connected with the import of valve body apart from rear transmission groove, and now, cold-producing medium enters transmission groove, then discharges through the outlet of three circulation passage from valve body.And by centre bore cold-producing medium, pressure is passed to the rear damping cavity formation pressure of valve body, when spool is lifted off a seat, has reasonable cushioning effect, prevent the raw vibration of spring wink movable property, reduce the noise of spring.
Alternatively, in above-mentioned expansion valve component, described damping structure comprises two circulation passage be opened in spool, and described two-way passage end can be connected with transmission groove, the other end can with the intracavity inter-connection of valve body.Cold-producing medium enters into the entrance point of passage, and gap appears in promotion spool a bit of distance back valve core and valve seat, and cold-producing medium flows to the outlet of valve body from gap; And pressure is passed to the rear damping cavity formation pressure of valve body by cold-producing medium by centre bore, have reasonable cushioning effect, prevent the raw vibration of spring wink movable property, reduce the noise of spring when lifting off a seat to spool.
Alternatively, in above-mentioned expansion valve component, described damping structure comprises the centre bore axially running through spool and the rear side hole be connected with centre bore, and the one end in rear side hole can be connected with the outlet of valve body.Cold-producing medium directly enters from the centre bore of spool, is discharged by the outlet of rear side hole from valve body; And pressure is passed to the rear damping cavity formation pressure of valve body by cold-producing medium by centre bore, have reasonable cushioning effect, prevent the raw vibration of spring wink movable property, reduce the noise of spring when lifting off a seat to spool.
A kind of single ported thermostatic expansion valve; it is characterized in that, this single ported thermostatic expansion valve comprises above-mentioned expansion valve component and is enclosed within the protective cover outside valve body, and protective cover offers the interface relative with the outlet of valve body; described interface is fixed with out pipe, is fixed with inlet pipe in the import department of valve body.
Protective cover can reduce noise during expansion valve component running, intercepts noise unofficial biography; Can protect valve body, and valve body does not have unnecessary welding position, protective cover has interface simultaneously, the convenient connection with going out pipe.
In above-mentioned single ported thermostatic expansion valve, described interface has outside flange, goes out pipe and is connected with flanging welded.Flange, with to go out pipe contact area large, be easily welded and fixed, improve sealing and the stability of weld.
In above-mentioned single ported thermostatic expansion valve, described inlet pipe internal fixtion has net-filter assembly, and described net-filter assembly comprises the rack be fixed in inlet pipe and the filter screen be attached on rack.Net-filter assembly, for filtering the foreign material be mingled with in cold-producing medium, prevents from blocking expansion valve component.
A kind of Bi-direction circulation expansion valve; it is characterized in that; this Bi-direction circulation expansion valve comprises the valve block with two passages parallel to each other; each passage has entrance point and the port of export; each described port of export place is all connected with above-mentioned expansion valve component; described valve block offers the by-pass prot that the outlet of the expansion valve component on a passage is connected with the entrance point of another passage, is also welded with the protective cover leaked when preventing medium from flowing through between by-pass prot and outlet at described port of export place.
This Bi-direction circulation expansion valve is mainly used in cold and warm type air-conditioning system, and the medium flowed in air-conditioning is exactly cold-producing medium, and cold-producing medium enters into the import of expansion valve component from the entrance point of passage.Although entrance point is connected by the outlet of by-pass prot with the expansion valve component on another passage, due to this case expansion valve component has itself can not the function of reverse circulated, so another passage is by shutoff.When refrigerant flow is less, cold-producing medium passes through from damping structure, spool does not move, when the outlet pressure difference of channel entrance end and expansion valve component acquires a certain degree, spring shrinks by the extruding force of spool, and spool is just extruded, cold-producing medium flows through from the gap between spool and valve seat, discharge from the outlet of expansion valve component, make spool off-load, ensure channel entrance end and outlet pressure difference relative constancy.Two expansion valve component are arranged in parallel, and realize two-way circulating function, damping structure decreases the motion of spool, improve the service life of expansion valve component.Protective cover protection expansion valve component, and be the exit passageway of expansion valve component.
In above-mentioned Bi-direction circulation expansion valve, in two passages of described valve block, be equipped with the spacer ring for the import and outlet intercepting expansion valve component.Spacer ring can adopt elastomeric material to make, and improves the validity intercepted, prevents cold-producing medium from directly entering into the entrance point of another passage through by-pass prot from the entrance point of a passage.
In above-mentioned Bi-direction circulation expansion valve, entrance point and the port of export of described valve block are all fixed with valve gap, on valve gap, welding is fixed with inlet pipe and goes out pipe, described inlet pipe and go out the net-filter assembly be all fixed with described in net-filter assembly in pipe and comprise and be fixed on inlet pipe and go out rack in pipe and be attached to the filter screen on rack.Net-filter assembly, for filtering the foreign material be mingled with in cold-producing medium, prevents from blocking expansion valve component.
Compared with prior art, this expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve have the following advantages:
1. make the pressure differential of inner chamber and outlet and import keep balancing by damping structure, ensure the pressure needed for refrigerant compression liquefaction.When refrigerant flow is less simultaneously, spool can be failure to actuate, and reduces spring frequent movement, improves the service life of expansion valve component.
2. damping cavity before being formed between valve seat and spool, has good buffering when spool is contacted with valve seat, reduces the impact of spool, improves the life-span of expansion valve component.
3. spool and valve body form rear damping cavity, have good cushioning effect when lifting off a seat to spool, prevent the raw vibration of spring wink movable property, reduce the noise of spring, improve the life-span of expansion valve component.
4. the head of spool and suitable the coordinating of the taper hole of valve seat.Can change along with refrigerant flow, the head position of spool is moved, and throttle chink size changes.Therefore flow of refrigerant dynamic resistance can be reduced, there is significant role to the Energy Efficiency Ratio that improve whole air-conditioner.
Accompanying drawing explanation
Fig. 1 is the structural representation of this expansion valve component of embodiment one.
Fig. 2 is the structural representation of the spool of embodiment one.
Fig. 3 is the structural representation of the valve seat of embodiment one.
Fig. 4 is the schematic diagram of the damping structure of embodiment one.
Fig. 5 is the schematic diagram of the damping structure of embodiment two.
Fig. 6 is the schematic diagram of the damping structure of embodiment three.
Fig. 7 is the schematic diagram of the damping structure of embodiment four.
Fig. 8 is the schematic diagram of the damping structure of embodiment five.
Fig. 9 is the structural representation of the spool of embodiment five.
Figure 10 is the structural representation of the inner spool of embodiment five.
Figure 11 is the schematic diagram of the damping structure of embodiment six.
Figure 12 is the schematic diagram of the damping structure of embodiment seven.
Figure 13 is the structural representation of this single ported thermostatic expansion valve.
Figure 14 is the structural representation of this Bi-direction circulation expansion valve.
Figure 15 is the structural representation of the valve block of this Bi-direction circulation expansion valve.
In figure, 1, expansion valve component; 1a, valve body; 1a1, outlet; 1a2, inner chamber; 1a3, import; 1b, valve seat; 1b1, transmission groove; 1b2, throttling pore; 1b3, bar-shaped trough two; 1b4, front cylindrical hole; 1b5, prosthomere flow cone hole; 1b6, rear cylindrical hole; 1b7, deutomerite flow cone hole; 1c, spool; 1c1, head; 1c2, afterbody; 1c3, three circulation passage; 1c4, two circulation passage; 1c5, centre bore; 1c6, rear side hole; 1c7, bar-shaped trough one; 1c8, front cylinder; 1c9, prosthomere flow cone; 1c10, rear cylinder; 1c11, deutomerite flow cone; 1d, spring; 2, valve block; 2a, passage; 2b, entrance point; 2c, by-pass prot; 2d, the port of export; 3, spring base; 3a, gag lever post; 4, spacer ring; 5, damping ring; 6, protective cover; 6a, interface; 7, valve gap; 8, inlet pipe; 9, net-filter assembly; 10, inner spool; 10a, guiding gutter; 11, little spring; 12, pipe is gone out.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one
As shown in Figure 1, this expansion valve component comprises and has import 1a3 and outlet valve body 1a, the valve seat 1b be fixed in valve body 1a of 1a1, spool 1c and make spool 1c have spring 1d to valve seat 1b mobile trend.Spool 1c has cone shape head 1c1, valve seat 1b offers the taper hole matched with spool 1c head 1c1, is provided with the damping structure can with cushioning effect between spool 1c and valve seat 1b.
Specifically, as shown in Figure 2, Figure 3, Figure 4, valve body 1a is straight-tube shape, and import 1a3 is positioned at the port of straight-tube shape valve body 1a, and outlet 1a1 is opened on the sidewall of valve body 1a, spool 1c also has the cylindrical afterbody 1c2 that to be connected with spool 1c head 1c1.The head 1c1 of spool 1c has front cylinder 1c8, prosthomere flow cone 1c9, transition cone successively, the taper hole of rear cylinder 1c10, deutomerite flow cone 1c11, valve seat 1b has corresponding front cylindrical hole 1b4, prosthomere flow cone hole 1b5, transmission groove, rear cylindrical hole 1b6 and deutomerite flow cone hole 1b7 successively.
Damping structure comprises the three circulation passage 1c3 be opened in spool 1c, three circulation passage 1c3 one end can be connected with transmission groove 1b1, the other end can be connected with the outlet 1a1 of valve body 1a, also have one end can be rear damping cavity with the inner chamber 1a2(of valve body 1a) be connected, valve seat 1b also offers the throttling pore 1b2 of the import 1a3 being communicated with transmission groove 1b 1 and valve body 1a.Stud with capillary in throttling pore 1b2, change the flow of throttling pore 1b2 with this.
The afterbody 1c2 of spool 1c is arranged with the damping ring 5 with opening, in the damping annular groove that the face of cylinder that the afterbody 1c2 that damping ring 5 is arranged on spool 1c and valve body 1a phase are close to is offered.Certainly, the damping ring 5 closed that diameter is less also can reach the identical effect with the damping ring 5 with opening.Be fixed with spring base 3 bottom the inner chamber 1a2 of valve body 1a, spring 1d one end is resisted against on spring base 3, and the other end is resisted against on spool 1c, spring base 3 has the gag lever post 3a that restraining spring 1d swings.
Embodiment two
The structure of embodiment two and principle and embodiment one basic simlarity, as shown in Figure 5, damping structure is with the difference of embodiment one, the damping structure of embodiment two comprises the three circulation passage 1c3 be opened in spool 1c, three circulation passage 1c3 one end can be connected with transmission groove 1b1, the other end can be connected with the outlet 1a1 of expansion valve component 1, also has one end can be connected with the inner chamber 1a2 of valve body 1a.Compare embodiment one, eliminate the setting of throttling pore 1b2.
Embodiment three
The structure of embodiment three and principle and embodiment two basic simlarity, as shown in Figure 6, damping structure is with the difference of embodiment two, the damping structure of embodiment three comprises the two circulation passage 1c4 be opened in spool 1c, two described circulation passage 1c4 one end can be connected with transmission groove 1b1, and the other end can be connected with the inner chamber 1a2 of valve body 1a.Compare embodiment two, embodiment three eliminates the transmission relation of cold-producing medium between spool 1c inside and outlet 1a1, directly flows through from gap between the two.
Embodiment four
The structure of embodiment four and principle and embodiment one basic simlarity, as shown in Figure 7, difference is damping structure, and it comprises the centre bore 1c5 axially running through spool 1c and the rear side hole 1c6 be connected with centre bore 1c5, and one end of rear side hole 1c6 can be connected with the outlet 1a1 of expansion valve component 1.
Embodiment five
As shown in Fig. 8, Fig. 9, Figure 10, embodiment five improves on the basis of embodiment four, damping structure comprises the centre bore 1c5 axially running through spool 1c and the rear side hole 1c6 be connected with centre bore 1c5, one end of rear side hole 1c6 can be connected with the outlet 1a1 of expansion valve component 1, axially also offer installing hole at centre bore 1c5, in installing hole, be provided with inner spool 10 and little spring 11.The port riveted joint of installing hole has back-up ring, inner spool 10 and little spring 11 is fixed in installing hole.The diameter of centre bore 1c5 is less than installing hole, so form gear edge in the inside of spool 1c.Inner spool 10 is close to gear edge under the active force of little spring 11, has blocked being communicated with of centre bore 1c5 and rear side hole 1c6.The outer cylinder of inner spool 10 offers guiding gutter 10a, leaving gear at inner spool 10 can through the inner chamber 1a2 of guiding gutter 10a arrival valve body 1a along rear cold-producing medium.
When refrigerant flow is less, inner spool 10 is preferentially open, and cold-producing medium enters centre bore 1c5, then arrives the outlet 1a1 of expansion valve component 1 from rear side hole 1c6.When refrigerant flow is larger, spool 1c departs from valve seat 1b, and most of cold-producing medium passes through from the gap between valve seat 1b and spool 1c.Cold-producing medium, through centre bore 1c5, the guiding gutter 10a passing through inner spool 10 again, through back-up ring, finally reaches the inner chamber 1a2 of valve body 1a, there is certain damping action, to spool 1c lift off a seat 1b time have reasonable cushioning effect, prevent spring 1d from producing vibration, reduce the noise of spring 1d.
Embodiment six
As shown in figure 11, the structure basic simlarity of embodiment six and embodiment one, it is a kind of deformation program of embodiment one, cancel the throttling pore 1b2 of valve seat in embodiment one, the outer surface of spool 1c is opened bar-shaped trough one 1c7, make it and valve seat 1b leans time, cold-producing medium still can pass through from bar-shaped trough one 1c7 between valve seat 1b and spool 1c, enters into transmission groove 1b1.
Embodiment seven
As shown in figure 12, the structure basic simlarity of embodiment seven and embodiment one, it is a kind of deformation program of embodiment one, cancel the throttling pore 1b2 of valve seat in embodiment one, the outer surface of valve seat 1b is opened bar-shaped trough 1b3, make it and valve seat 1c leans time, cold-producing medium still can pass through from the bar-shaped trough 1b3 between valve seat 1b and spool 1c, enters into transmission groove 1b1.
As shown in figure 13; the protective cover 6 that this case single ported thermostatic expansion valve comprises above-mentioned expansion valve component 1 and is enclosed within outside valve body 1a; protective cover 6 offers the interface 6a relative with the outlet 1a1 of valve body 1a, described interface 6a is fixed with out pipe 12, be fixed with inlet pipe 8 at the import 1a3 place of valve body 1a.
Interface 6a place has outside flange, goes out pipe 12 and is connected with flanging welded.Inlet pipe 8 internal fixtion has net-filter assembly 9, and net-filter assembly 9 comprises the rack be fixed in inlet pipe and the filter screen be attached on rack.
As shown in Figure 14, Figure 15; this Bi-direction circulation expansion valve comprises the valve block 2 with two passage 2a parallel to each other; the port of export 2d of each passage 2a is all connected with expansion valve component 1; valve block 2 offers the by-pass prot 2c that the outlet 1a1 of the expansion valve component 1 on a passage 2a is connected with the entrance point 2b of another passage 2a, be also welded with the protective cover leaked when preventing medium from flowing through between by-pass prot and outlet at port of export place.
Specifically, be equipped with the spacer ring 4 of import for intercepting expansion valve component 1 and outlet 1a1 in two passage 2a of valve block 2, spacer ring 4 is made for encapsulant.Outside expansion valve component 1, cover has protective cover 6, and protective cover 6 welding is connected in the port of export 2d of passage 2a.The entrance point 2b of passage 2a is fixed with valve gap 7, and on valve gap 7, welding is fixed with inlet pipe 8, and inlet pipe 8 internal fixtion has net-filter assembly 9, and net-filter assembly 9 comprises the rack be fixed in inlet pipe 8 and the filter screen be attached on rack.
The entrance point 2b of cold-producing medium admission passage 2a, when flow hour, cold-producing medium, by the anterior throttling pore 1b2 of valve seat 1b, arrives transmission groove 1b1, by three circulation passage 1c3 on spool 1c, finally flows out this valve.Cold-producing medium arrives the inner chamber 1a2 of valve body 1a simultaneously, ensures that inner chamber 1a2 is consistent with the outlet 1a1 pressure of expansion valve component 1.If now refrigeration plant just starts, import and the outlet 1a1 pressure differential of expansion valve component 1 do not reach refrigeration plant designing requirement, therefore the refrigerating efficiency of refrigeration plant is very low.Refrigeration plant passes through signal processing and analysis according to designing requirement, compressor passes through progressively enlargement discharge, import 1a3 and outlet 1a1 pressure differential reach designing requirement, rush of current when so both avoiding compressor start, be less than again the response speed of circulation expansion valve, give full play to the effect of this expansion valve, for the efficiency improving air-conditioning is given security.
When refrigerant flow increases gradually, the entrance point 2b pressure of passage 2a raises, and the outlet 1a1 of expansion valve component 1 is the evaporating pressure of cold-producing medium, then entrance point 2b and outlet 1a1 pressure differential increase.When entrance point 2b and outlet 1a1 pressure differential reach certain pressure degree, pressure differential is greater than the elastic force of spring 1d, spool 1c moves and away from valve seat 1b, the cold-producing medium gap that can also enter between valve seat 1b and spool 1c arrives and exports 1a1, at the by-pass prot 2c through valve block 2, be discharged in the entrance point 2b of another passage 2a.Now spool 1c off-load, ensure that passage 2a entrance point 2b and outlet 1a1 pressure differential relative constancy.
Along with flow continues to increase, spool 1c continues away from valve seat 1b, and the gap of valve seat 1b and spool 1c is increasing, until spool 1c is against gag lever post 3a on spring base 3 or spring 1d reach compression limit.Now refrigeration plant power output under maximum delivery efficiency state reaches peak value, is the specified peak power output of this Bi-direction circulation expansion valve.If refrigerant flow also will increase, then air-conditioner duty worsens, and refrigerating efficiency reduces.The existence of the inner chamber 1a2 simultaneously formed due to damping ring 5, spool 1c and valve body 1a, has certain damping action, makes spool 1c can not instantaneous movement, overcomes the vibration that cold-producing medium TRANSFER BY PULSATING FLOW causes spool 1c and spring 1d.
When refrigeration plant reaches design temperature, equipment passes through signal processing and analysis according to designing requirement, compressor gradually reduces the flow of cold-producing medium, the entrance point 2b pressure of passage 2a decreases, and the outlet 1a1 of expansion valve component 1 is the evaporating pressure of cold-producing medium, then entrance point 2b and outlet 1a1 pressure differential reduce.Therefore under the elastic force effect of spring 1d, spool 1c is close to valve seat 1b.The flow that cold-producing medium passes through from the gap between valve seat 1b and spool 1c reduces, and the flow of discharge also reduces thereupon.Then passage 2a entrance point 2b pressure gos up, and ensures entrance point 2b and outlet 1a1 pressure differential relative constancy.This process flow reduces speed can not be greater than the response speed two-way circulating and expand, otherwise also can reduce the efficiency of refrigeration plant.
Along with refrigerant flow continues to reduce, the pressure of passage 2a entrance point 2b continues to reduce.Under the effect of spring 1d elastic force, spool 1c contacts with valve seat 1b, now by valve seat 1b and spool 1c damping cavity before the space that transmission groove 1b1 is formed becomes, the head 1c1 of spool 1c can not be struck on the taper hole hole wall of valve seat 1b very soon, reduce the impact of spool 1c, increase its service life.Now refrigeration plant reaches keeping warm mode, if select suitable throttling pore 1b2 to mate with refrigeration space, spool 1c can be failure to actuate, and spool 1c non-action state is the specified minimum output power of this Bi-direction circulation expansion valve.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (15)
1. an expansion valve component, comprise the valve body (1a) with import (1a3) and outlet (1a1), be fixed on the valve seat (1b) in valve body (1a), spool (1c) and make spool (1c) have spring (1d) to valve seat (1b) mobile trend, it is characterized in that, described spool (1c) has cone shape head (1c1), described valve seat (1b) offers the taper hole matched with spool (1c) head (1c1), the damping structure can with cushioning effect is provided with between described spool (1c) and valve seat (1b), the head (1c1) of described spool (1c) has front cylinder (1c8), prosthomere flow cone (1c9), transition cone, rear cylinder (1c10), deutomerite flow cone (1c11) successively, the taper hole of described valve seat (1b) have successively match with spool (1c) head (1c1) front cylindrical hole (1b4), prosthomere flow cone hole (1b5), transmission groove (1b1), rear cylindrical hole (1b6) and deutomerite flow cone hole (1b7).
2. expansion valve component according to claim 1, it is characterized in that, described valve body (1a) is in straight-tube shape, import (1a3) is positioned at the port of straight-tube shape valve body (1a), outlet (1a1) is opened on the sidewall of valve body (1a), the afterbody (1c2) of described spool (1c) has the cylinder very little with valve body (1a) fit clearance and damping annular groove, and described damping annular groove is equipped with the damping ring (5) of an opening.
3. expansion valve component according to claim 2, it is characterized in that, described damping structure comprises three circulation passage (1c3) be opened in spool (1c), described three circulation passage (1c3) one end can be connected with transmission groove (1b1), the other end can be connected with the outlet of valve body (1a) (1a1), also have one end can be connected with the inner chamber of valve body (1a) (1a2), described valve seat (1b) also offers the throttling pore (1b2) being communicated with transmission groove (1b1) and import (1a3).
4. expansion valve component according to claim 3, is characterized in that, studs with capillary in described throttling pore (1b2).
5. expansion valve component according to claim 4, is characterized in that, described throttling pore (1b2) is also plugged with straight tube.
6. the expansion valve component according to claim 3 or 4 or 5, it is characterized in that, inner chamber (1a2) bottom of described valve body (1a) is fixed with spring base (3), described spring (1d) one end is resisted against on spring base (3), the other end is resisted against on spool (1c), described spring base (3) has the gag lever post (3a) that restraining spring (1d) swings.
7. expansion valve component according to claim 2, it is characterized in that, described damping structure comprises three circulation passage (1c3) be opened in spool (1c), described three circulation passage (1c3) one end can be connected with transmission groove (1b1), the other end can be connected with the outlet of valve body (1a) (1a1), also has one end can be connected with the inner chamber of valve body (1a) (1a2).
8. expansion valve component according to claim 2, it is characterized in that, described damping structure comprises two circulation passage (1c4) be opened in spool (1c), described two circulation passage (1c4) one end can be connected with transmission groove (1b1), and the other end can be connected with the inner chamber of valve body (1a) (1a2).
9. expansion valve component according to claim 2, it is characterized in that, described damping structure comprises the centre bore (1c5) axially running through spool (1c) and the rear side hole (1c6) be connected with centre bore (1c5), and the one end of rear side hole (1c6) can be connected with the outlet of valve body (1a) (1a1).
10. one kind has the single ported thermostatic expansion valve of arbitrary expansion valve component in the claims 1-9; it is characterized in that; this single ported thermostatic expansion valve comprises above-mentioned expansion valve component (1) and is enclosed within valve body (1a) protective cover outward (6); protective cover (6) offers the interface (6a) relative with the outlet of valve body (1a) (1a1); described interface (6a) is fixed with out pipe (12), is fixed with inlet pipe (8) at import (1a3) place of valve body (1a).
11. single ported thermostatic expansion valves according to claim 10, is characterized in that, described interface (6a) place has outside flange, go out pipe (12) and are connected with flanging welded.
12. single ported thermostatic expansion valves according to claim 11, it is characterized in that, described inlet pipe (8) internal fixtion has net-filter assembly (9), and described net-filter assembly (9) comprises the rack be fixed in inlet pipe (8) and the filter screen be attached on rack.
13. 1 kinds of Bi-direction circulation expansion valve with arbitrary expansion valve component in the claims 1-9, it is characterized in that, this Bi-direction circulation expansion valve comprises the valve block (2) with two passages (2a) parallel to each other, each passage (2a) has entrance point (2b) and the port of export (2d), the each described port of export (2d) place is all connected with above-mentioned expansion valve component (1), the by-pass prot (2c) that the outlet (1a1) described valve block (2) offering the expansion valve component (1) made on a passage (2a) is connected with the entrance point (2b) of another passage (2a), the protective cover (6) leaked when preventing medium from flowing through between by-pass prot (2c) and outlet (1a1) is also welded with at the described port of export (2d) place.
14. Bi-direction circulation expansion valve according to claim 13, it is characterized in that, in two passages (2a) of described valve block (2), being equipped with the spacer ring (4) of import (1a3) for intercepting expansion valve component (1) and outlet (1a1).
15. Bi-direction circulation expansion valve according to claim 14, it is characterized in that, entrance point (2b) and the port of export (2d) of described valve block (2) are all fixed with valve gap (7), the upper welding of valve gap (7) is fixed with inlet pipe (8) and goes out pipe (12), described inlet pipe (8) and go out in pipe (12) to be all fixed with net-filter assembly (9), described net-filter assembly (9) comprises and is fixed on inlet pipe (8) and the rack gone out in pipe (12) and is attached to filter screen on rack.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210418305.5A CN102878733B (en) | 2012-10-26 | 2012-10-26 | A kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve |
| PCT/CN2013/084571 WO2014063559A1 (en) | 2012-10-26 | 2013-09-29 | Expansion valve assembly and one-way expansion valve and two-way flowing expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210418305.5A CN102878733B (en) | 2012-10-26 | 2012-10-26 | A kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102878733A CN102878733A (en) | 2013-01-16 |
| CN102878733B true CN102878733B (en) | 2015-09-30 |
Family
ID=47480163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210418305.5A Active CN102878733B (en) | 2012-10-26 | 2012-10-26 | A kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102878733B (en) |
| WO (1) | WO2014063559A1 (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878733B (en) * | 2012-10-26 | 2015-09-30 | 温岭市恒发空调部件有限公司 | A kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve |
| CN103216980B (en) * | 2013-04-27 | 2015-02-04 | 温岭市恒发空调部件有限公司 | Bi-direction circulation expansion valve |
| EP2821736A1 (en) | 2013-07-04 | 2015-01-07 | Danfoss A/S | An expansion valve with a two-step variable orifice area |
| EP2821734A1 (en) | 2013-07-04 | 2015-01-07 | Danfoss A/S | An expansion valve comprising a stop element |
| EP2821735A1 (en) | 2013-07-04 | 2015-01-07 | Danfoss A/S | An expansion valve with a variable orifice area |
| CN104019258B (en) * | 2014-06-26 | 2016-08-17 | 华中科技大学无锡研究院 | A kind of double damping One-stage Water Hydraulic Relief Valve |
| JP6031078B2 (en) * | 2014-11-12 | 2016-11-24 | 株式会社鷺宮製作所 | Throttle device and refrigeration cycle system including the same |
| US9810338B2 (en) | 2015-01-20 | 2017-11-07 | Luxfer Canada, Ltd. | Gas cylinder valve |
| CN105387244A (en) * | 2015-12-10 | 2016-03-09 | 西安航天动力研究所 | Mono-coil self-unloading type two-component electromagnetic valve |
| CN105674637B (en) * | 2016-01-13 | 2017-12-15 | 同济大学 | A kind of refrigerant expansion valve based on pressure difference self-regulation |
| CN107270594A (en) * | 2017-07-18 | 2017-10-20 | 海信科龙电器股份有限公司 | A kind of restriction sleeve and air conditioner |
| KR102428975B1 (en) * | 2017-07-19 | 2022-08-05 | 현대자동차주식회사 | Clutch regulator for vehicle |
| CN109458659A (en) * | 2017-09-06 | 2019-03-12 | 崔荣桓 | Boiler including type variable differential flow regulating valve |
| CN109780224A (en) * | 2017-11-13 | 2019-05-21 | 艾默生环境优化技术(苏州)有限公司 | Electric expansion valve |
| CN107989846A (en) * | 2017-12-15 | 2018-05-04 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of bidirectional hydraulic orifice valve |
| CN110242778B (en) * | 2018-03-09 | 2022-03-22 | 浙江盾安机械有限公司 | Bidirectional throttle valve |
| CN109114853A (en) * | 2018-09-26 | 2019-01-01 | 温岭市恒发空调部件有限公司 | A kind of expansion valve |
| CN111102769B (en) * | 2018-10-29 | 2021-07-06 | 奥克斯空调股份有限公司 | Throttling device and air conditioner |
| CN109539642A (en) * | 2019-01-18 | 2019-03-29 | 奥克斯空调股份有限公司 | A kind of adaptive throttling device and air conditioner |
| CN111765671B (en) * | 2019-04-02 | 2022-06-17 | 浙江盾安禾田金属有限公司 | Two-way circulation expansion valve and device with same |
| WO2022012537A1 (en) * | 2020-07-15 | 2022-01-20 | 浙江盾安人工环境股份有限公司 | Throttle valve and heat exchange system |
| CN111998577A (en) * | 2020-07-15 | 2020-11-27 | 盾安环境技术有限公司 | Two-way throttle valve |
| CN116221466A (en) * | 2023-05-10 | 2023-06-06 | 天津市塘沽沃特斯阀门有限公司 | Pressure reducing valve with turbulence eliminating function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5364066A (en) * | 1993-07-15 | 1994-11-15 | Sporlan Valve Company | Dual port valve with stepper motor actuator |
| CN1952450A (en) * | 2005-10-20 | 2007-04-25 | 卡日尔股份公司 | Valve for adjusting the flow-rate of fluids, particularly refrigeration fluids |
| CN101107485A (en) * | 2005-02-28 | 2008-01-16 | 大金工业株式会社 | Expansion valve and refrigeration device |
| CN203216168U (en) * | 2012-10-26 | 2013-09-25 | 温岭市恒发空调部件有限公司 | Expansion valve components, one-way expansion valve and two-way circulation expansion valve |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB574691A (en) * | 1943-10-14 | 1946-01-16 | Frigidaire Ltd | An improved method of mounting needle valves |
| JPS59128977U (en) * | 1983-02-07 | 1984-08-30 | 株式会社東芝 | electric expansion valve |
| JPH0665915B2 (en) * | 1987-03-27 | 1994-08-24 | 株式会社鷺宮製作所 | Reversible electric expansion valve |
| JP2000120885A (en) * | 1998-10-08 | 2000-04-28 | Fuji Koki Corp | Motor operated valve |
| US6250602B1 (en) * | 1999-01-18 | 2001-06-26 | Jansen's Aircraft Systems Controls, Inc. | Positive shut-off metering valve with axial thread drive |
| JP2004069152A (en) * | 2002-08-06 | 2004-03-04 | Izumi Giken:Kk | Valve device used for freezing cycle |
| JP4228836B2 (en) * | 2003-08-20 | 2009-02-25 | ダイキン工業株式会社 | Electric expansion valve for refrigeration equipment |
| JP4285155B2 (en) * | 2003-08-27 | 2009-06-24 | ダイキン工業株式会社 | Multistage electric expansion valve and refrigeration system |
| CN1786625A (en) * | 2004-12-07 | 2006-06-14 | 株式会社Tgk | Expansion device |
| JP2006266667A (en) * | 2005-02-28 | 2006-10-05 | Daikin Ind Ltd | Expansion valve and freezing apparatus |
| JP4842692B2 (en) * | 2006-04-21 | 2011-12-21 | 株式会社鷺宮製作所 | Ammonia refrigerant refrigeration cycle apparatus valve apparatus and ammonia refrigerant refrigeration cycle apparatus |
| JP2008138812A (en) * | 2006-12-04 | 2008-06-19 | Tgk Co Ltd | Differential pressure valve |
| CN201116614Y (en) * | 2007-06-29 | 2008-09-17 | 上海恒温控制器厂有限公司 | Valve core fixing structure |
| CN101929550B (en) * | 2009-06-25 | 2013-02-20 | 浙江三花股份有限公司 | Electronic expansion valve |
| CN102878733B (en) * | 2012-10-26 | 2015-09-30 | 温岭市恒发空调部件有限公司 | A kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve |
-
2012
- 2012-10-26 CN CN201210418305.5A patent/CN102878733B/en active Active
-
2013
- 2013-09-29 WO PCT/CN2013/084571 patent/WO2014063559A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5364066A (en) * | 1993-07-15 | 1994-11-15 | Sporlan Valve Company | Dual port valve with stepper motor actuator |
| CN101107485A (en) * | 2005-02-28 | 2008-01-16 | 大金工业株式会社 | Expansion valve and refrigeration device |
| CN1952450A (en) * | 2005-10-20 | 2007-04-25 | 卡日尔股份公司 | Valve for adjusting the flow-rate of fluids, particularly refrigeration fluids |
| CN203216168U (en) * | 2012-10-26 | 2013-09-25 | 温岭市恒发空调部件有限公司 | Expansion valve components, one-way expansion valve and two-way circulation expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014063559A1 (en) | 2014-05-01 |
| CN102878733A (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102878733B (en) | A kind of expansion valve component and single ported thermostatic expansion valve and Bi-direction circulation expansion valve | |
| CN102878734B (en) | Expansion valve | |
| CN203216168U (en) | Expansion valve components, one-way expansion valve and two-way circulation expansion valve | |
| CN103216980B (en) | Bi-direction circulation expansion valve | |
| CN203231423U (en) | Air conditioner with function of automatically adjusting quantity of refrigerants of system | |
| EP1039250B1 (en) | Refrigerating cycle with a by-pass line | |
| CN111854204B (en) | Refrigerator equipment, refrigerating system and control method of refrigerating system | |
| CN100529600C (en) | Across critical carbon dioxide automobile air conditioner system mechanical conditioning type expansion valve | |
| CN105091387A (en) | Efficient refrigerating system | |
| CN103322735A (en) | Thermostatic expansion valve with bypass flow passage | |
| CN105466088A (en) | Thermostatic expansion valve and heat pump system provided with thermostatic expansion valve | |
| CN101900463B (en) | Air-conditioner and air-conditioner control method | |
| CN202915612U (en) | Expansion valve | |
| CN210196498U (en) | Throttle valve and air conditioner | |
| CN111854202B (en) | Refrigerator equipment, refrigerating system and control method of refrigerating system | |
| CN102589048A (en) | Water-cooling multi-connected unit and working manner thereof | |
| CN103175355A (en) | Air conditioner and exhaust temperature control method used for air conditioner | |
| CN208041176U (en) | The automobile air-conditioning heating power expansion valve of throttling | |
| CN102865399A (en) | Electronic expansion valve | |
| CN101551182A (en) | Variable frequency air conditioner cooling liquid circulating method and system | |
| CN202371820U (en) | Air conditioner | |
| CN204902298U (en) | Refrigeration mechanism with thermostatic expansion valve | |
| CN105485979A (en) | Thermal expansion valve and heat pump system having same | |
| CN104235987A (en) | Air conditioner system and vehicle comprising same | |
| CN212339461U (en) | Outdoor unit and air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221208 Address after: 317523 Second floor, first floor, southeast corner, No. 228, Houcang Road, Zeguo Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Zhejiang Zeshun Refrigeration Technology Co.,Ltd. Address before: No. 228, Houcang Road, Zeguo Town, Wenling City, Taizhou City, Zhejiang Province 317523 Patentee before: WENLING HENGFA AIRCONDITION COMPONENTS Co.,Ltd. |