CN103216980A - Bi-direction circulation expansion valve - Google Patents
Bi-direction circulation expansion valve Download PDFInfo
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- CN103216980A CN103216980A CN2013101558966A CN201310155896A CN103216980A CN 103216980 A CN103216980 A CN 103216980A CN 2013101558966 A CN2013101558966 A CN 2013101558966A CN 201310155896 A CN201310155896 A CN 201310155896A CN 103216980 A CN103216980 A CN 103216980A
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
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- 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
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- 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
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- 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
Abstract
The invention provides a bi-direction circulation expansion valve, and belongs to the technical field of air conditioners. The bi-direction circulation expansion valve solves the problem that an existing bi-direction circulation expansion valve is poor in sealing property due to a plurality of potential leakage points which are caused by a fact that two expansion valve assemblies are connected in parallel and a valve body is fixedly connected with a protection cover in a welding mode in the existing bi-direction circulation expansion valve. The bi-direction circulation expansion valve comprises a valve body which is provided with two inlet cavities. A first bi-direction valve assembly and a second bi-direction valve assembly are placed inside the valve body, and a valve cavity of the first bi-direction valve assembly is communicated with a valve cavity of the second bi-direction valve assembly. A first one-direction valve assembly is placed between a first outlet of the first bi-direction valve assembly and an inlet cavity of the second bi-direction valve assembly, wherein the first one-direction valve assembly is used for enabling refrigerating fluid to flow in through the first outlet and flow out from the inlet cavity. A second one-direction valve assembly is placed between a first outlet of the second bi-direction valve assembly and an inlet cavity of the first bi-direction valve assembly, wherein the second one-direction valve assembly is used for enabling the refrigeration fluid to flow in through the first outlet of the second bi-direction valve assembly and flow out from the inlet cavity of the first bi-direction valve assembly. The bi-direction circulation expansion valve has the advantages of being small in number of parts, simple in structure and easy to assemble.
Description
Technical field
The invention belongs to air-conditioning technical field, relate to the cooling mechanical automatic expansion valve of a kind of convertible frequency air-conditioner, particularly a kind of expansion valve that two-way circulates.
Background technology
Expansion valve is mainly used in the air-conditioning refrigeration system, is the important component part of refrigeration system.The liquid refrigerant of HTHP became the moist steam of low-temp low-pressure during expansion valve made by its throttling, cold-producing medium absorbs heat and reaches refrigeration in evaporimeter then, the degree of superheat of expansion valve by the evaporimeter end changes comes the by-pass valve control flow, prevents the under-utilized and engine knock phenomenon of evaporator area.Two-way expansion valve is mainly used in the cold and warm type air-conditioning system, adopts the in parallel or series connection setting of two expansion valve component, realizes two-way circulating function.
It as application number 201210418305.5 patent of invention; this Invention Announce a kind of expansion valve that two-way circulates; comprise valve piece with two passages parallel to each other; each passage has the entrance point and the port of export; each port of export place all is connected with above-mentioned expansion valve component; offer the by-pass prot that the outlet that makes the expansion valve component on the passage is connected with the entrance point of another passage on the valve piece, also be welded with the protective cover that prevents that cold-producing medium from leaking when flowing through between by-pass prot and the outlet at described port of export place.This expansion valve that two-way circulates is with two expansion valve component parallel connections, and parts are various, complex structure, and assembling is difficulty relatively; And the welding of a plurality of valve bodies, protective cover is fixed together, and the interface between passage or the exit port is too many, and potential leak point is more, causes sealing relatively poor.
Summary of the invention
The objective of the invention is to have the problems referred to above, proposed a kind of expansion valve of two-way circulating realized at existing technology.
Purpose of the present invention can realize by following technical proposal: a kind of expansion valve that two-way circulates, comprise valve body with two snout cavities, it is characterized in that, be provided with two-way valve assembly one and two-way valve assembly two in the described valve body, the valve pocket of the valve pocket of described two-way valve assembly one and two-way valve assembly two is connected, be provided with between the outlet one of two-way valve assembly one and the snout cavity of two-way valve assembly two and make cold-producing medium flow into the check valve assembly one that snout cavity flows out, make cold-producing medium flow into the check valve assembly two that snout cavity flows out between the outlet one of two-way valve assembly two and the snout cavity of two-way valve assembly one from exporting one from exporting one.
Originally the expansion valve that two-way circulates is a symmetrical structure, two-way valve assembly one is identical with two-way valve assembly two structures, check valve assembly one is identical with check valve assembly two structures, cold-producing medium enters from the snout cavity of two-way valve assembly one, through the outlet of two-way valve assembly one, flow into the snout cavity place of two-way valve assembly two then by check valve assembly one, discharge valve body at last, vice versa, realizes the function that two-way circulates.
In the above-mentioned expansion valve that two-way circulates, also comprise shell with two interfaces, two interfaces are connected with two snout cavities of valve body respectively, described valve body is straight-tube shape, described check valve assembly one and check valve assembly two have the outlet two that is connected with snout cavity respectively, and described outlet one and outlet two all are opened on the sidewall of valve body.
Originally the expansion valve that two-way circulates has only a shell and valve body, when refrigerant flow hour, can enter from the interface of shell, enter into valve pocket by two-way valve assembly one, again from valve pocket to two-way valve assembly two, flow out from another interface.Because the valve pocket of two-way valve assembly one and two-way valve assembly two is connected, cold-producing medium flows from another reverse interface and also is fine, and realizes the function that two-way circulates.When refrigerant flow is big, enter into snout cavity from the interface of shell, enter into gap between shell and the valve body by the two-way valve assembly once the outlet one of body wall, then by check valve assembly one, directly enter into another snout cavity through exporting two, owing to have the outlet one and the outlet two of two groups of symmetries, big flow also can be realized the function that two-way circulates.This valve Welding Structure is few, and the work of each parts is all finished in a shell in the valve, so sealing is better, and simple in structure.
In the above-mentioned described expansion valve that two-way circulates, the valve piece that described check valve assembly one comprises the spring base that is fixed on interface and is enclosed within the valve body outside and can slides along the valve body outside, the relatively outlet one and export the ringwise retaining edge that has protrusion on the inwall between two of described shell, described spring base and retaining along between if the valve piece has to retaining along the spring one of mobile trend, and can block exporting two when valve piece and retaining described valve piece when leaning.Spring one is enclosed within on the spring base, when refrigerant flow hour, the valve piece is subjected to the elastic force effect of spring one and is resisted against retaining along last, outlet two is stopped by valve piece side and is in closed condition; When refrigerant flow increases to one regularly, the valve piece that is enclosed in outlet two places can be pushed open, spring one is squeezed, cold-producing medium just enters into snout cavity and discharges then from exporting two.
As another kind of scheme, in the above-mentioned described expansion valve that two-way circulates, the valve piece that described check valve assembly one comprises the spring base that is fixed on interface and is enclosed within the valve body outside and can slides along the valve body outside, the relatively outlet one and export the ringwise retaining edge that has protrusion on the inwall between two of described shell, also be provided with back-up ring between described retaining edge and the valve piece, if the valve piece has the spring one to the back-up ring mobile trend, and outlet two can be blocked when valve piece and retaining described valve piece when leaning between described spring base and the back-up ring.Back-up ring is located between retaining edge and the valve piece, because the valve piece needs to slide relatively, so and have the gap between the shell, and retaining has a transition arc along being to be formed by the shell processing and forming, and it is unreliable that valve piece location may take place, cold-producing medium flow into spring one residing chamber easily from the gap so, cause the pressure balance on valve piece both sides and cause the valve piece motionless, so after back-up ring is set, have certain sealing effectiveness.
In the above-mentioned described expansion valve that two-way circulates, the inwall of described back-up ring lateral surface and shell tightly leans.The high-low pressure cold-producing medium is intercepted in valve piece both sides, prevent that high-pressure refrigerant from directly entering snout cavity from exporting two.For anti-Sealing shield ring is moved under the fluid effect, back-up ring and valve body need be connected, groove is set in the middle of the back-up ring, by slot rolling on valve body or get ready with groove mutually embedding realize fixing, so back-up ring also has certain sealing effectiveness.For the tiny flow quantity that guarantees cold-producing medium needs to improve the sealing effectiveness of valve piece at one at smaller range changing, prevent cold-producing medium from exporting two gaps that directly enter between valve body and the shell, the gap between valve piece and the shell is very little.For guaranteeing that valve body is not is not worn and torn by the valve piece, the material that the valve piece adopts hardness to be lower than valve body is made.
In the above-mentioned described expansion valve that two-way circulates, described spring base one end and shell be inlay card mutually, the other end and valve body be inlay card mutually, and described spring base has the centre bore that is communicated with interface and snout cavity, also offers the side opening of connection centre bore and shell body on the described spring base.Spring base is fixed on the shell, and specifically, an end of the inner of one of them spring base and valve body is inlay card mutually, and in the inner of another spring base is enclosed within on the valve body, not only plays the fixed support valve body, and guarantee the surplus that valve body expands with heat and contract with cold.Spring one is enclosed within the outside of spring base, and centre bore, convenient refrigerant used circulation are opened in the spring base middle part, side opening is connected with spring one residing chamber, since spring one when being squeezed the valve piece slide backward, extrusion spring one residing chamber opens that main effect is the off-load step-down behind the side opening.Because valve piece position-limiting action greater than valve piece snout cavity, is played in the spring base outer end.And when cold-producing medium flow into spring one residing chamber from the spring base side opening, pressure is acted on valve piece cylindrical and spring side, so the formation pressure differential of valve piece is this valve import and export difference and spring force sum, make it possible to the valve piece all the time near keeping off along motionless.
In the above-mentioned described expansion valve that two-way circulates, described two-way valve assembly comprises that two are fixed in the valve body and in outlet one with export valve seat between two, being provided with in the described valve pocket can be along valve pocket slip and the spool that matches mutually one by one with valve seat, also be provided with in the described valve pocket and make spool have spring assembly, all offer the through-hole structure that is communicated with valve pocket and snout cavity on described spool and the corresponding valve seat to the valve seat mobile trend.When flow hour, cold-producing medium can directly enter into valve pocket from through-hole structure, flows out from the through-hole structure of the other end then; Spring assembly makes spool rely on valve seat, when flow is big, through-hole structure is not enough to satisfy the circulation of cold-producing medium, because it is big that the pressure of snout cavity becomes, spool will be open, most of cold-producing medium directly from export a gap that flow between valve body and the shell, is pushed the valve piece open, flows out from another snout cavity.
As another kind of scheme, in the above-mentioned described expansion valve that two-way circulates, described two-way valve assembly comprises that two are fixed in the valve body and in outlet one with export valve seat between two, being provided with in the described valve pocket can be along valve pocket slip and the spool that matches mutually one by one with valve seat, also be provided with in the described valve pocket and make spool have spring assembly to the valve seat mobile trend, offer the through-hole structure that is communicated with valve pocket and snout cavity on described spool and the valve seat, also be provided with the retaining pipe that is communicated with two through-hole structures in described valve pocket, the retaining pipe is communicated with the through-hole structure at two ends.
In the above-mentioned described expansion valve that two-way circulates, described spool has cone shape head, described through-hole structure comprises and offers the taper hole that is complementary with the spool head on the valve seat, also offer the throttling pore of the snout cavity that is communicated with taper hole and valve body on the valve seat, offer the throttling passage that is communicated with taper hole and valve pocket on the described spool.When refrigerant flow was small, spool can be failure to actuate, and reduced the frequent movement of spring two, the service life of having improved expansion valve component.
In the above-mentioned described expansion valve that two-way circulates,, on described shell, be provided with the capillary that is communicated with the two ends snout cavity as another program.The tiny flow quantity stability of cold-producing medium be can further improve, for realizing the tiny flow quantity changeability of cold-producing medium, valve seat and spool metalworking difficulty lowered simultaneously.Between spool and valve seat, increase sealing gasket, prevent that cold-producing medium from leaking between spool and valve seat.Between two snout cavities of this valve, be provided with the capillary of connection, regulate the size of tiny flow quantity by changing size capillaceous and length.
In the above-mentioned described expansion valve that two-way circulates, described spring assembly comprises respectively the spring two that the afterbody with two spools leans, and described spring two is enclosed within outside the retaining pipe, and described retaining pipe two ends are stretched in the throttling passage of both sides spool.The operation that a spring two just can satisfy two spools only is set, and spring two is enclosed within outside the retaining pipe, makes simple and compact for structurely, retaining is managed in the throttling passage of direct insertion spool, installs also more convenient.
In the above-mentioned described expansion valve that two-way circulates, described retaining pipe be have on straight tube-like and the two ends with can spool the position limiting structure that leans of bottom.Two spools valve body relatively independently slide, so the retaining pipe can not all be connected with two spools.Therefore, will keep off pipe and also be designed to and in throttling passage, to slide, and throttling passage also slides because of possessing a convenient retaining pipe of long straight hole.Too dark in order to prevent that backstop Guan Yiduan stretches into throttling passage, cause the other end to deviate from the throttling passage of another spool, also need on retaining pipe two ends, position limiting structure is set; When two spools when shortening, the position limiting structure of at least one end can lean with the spool bottom.
In the above-mentioned described expansion valve that two-way circulates, described position limiting structure comprises the projection of the outside expansion that retaining pipe two ends have.
As another kind of scheme, in the above-mentioned described expansion valve that two-way circulates, described position limiting structure comprises that fixed cover is located at the outer sleeve pipe of retaining pipe.
As another kind of scheme, in the above-mentioned described expansion valve that two-way circulates, described position limiting structure comprises that welding is connected in the block at retaining pipe two ends.
In the above-mentioned described expansion valve that two-way circulates, described snout cavity place is provided with screen pack.For making this valve energy operate as normal, the place establishes screen pack at entrance point.
Compared with prior art, the expansion valve that originally two-way circulates has the following advantages:
1. the assembling of whole valve can need not welded fully, only adopts slot rolling to fix and gets final product, and installs more convenient.
2. check valve assembly and two-way valve assembly are in the same shell, and volume is less, compact conformation, and stability better is not easy to leak.
When refrigerant flow hour, spool can be failure to actuate, and can directly pass through the frequent movement of minimizing spring assembly and the friction of spool and valve base chamber, the service life of having improved expansion valve the through-hole structure from the two-way valve assembly.
4. by between the snout cavity at two ends, being provided with plug-in capillary, can reduce the metalworking difficulty of spool valve seat, and be easy to realize the tiny flow quantity change.
Description of drawings
Fig. 1 is present embodiment one a two-way circulation expansion valve mechanism cutaway view.
Fig. 2 is the structural representation of present embodiment one spool valve seat.
Fig. 3 is the structural representation of embodiment two.
Among the figure, 1, shell; 1a, interface; 1b, retaining edge; 2, valve body; 2a, valve pocket; 2b, snout cavity; 2c, outlet two; 2d, outlet one; 3, spring base; 3a, centre bore; 3b, side opening; 4, valve piece; 5, back-up ring; 6, spring one; 7, valve seat; 7a, taper hole; 7b, throttling pore; 8, spool; 8a, throttling passage; 9, retaining pipe; 9a, projection; 10, spring two; 11, packing ring; 12, capillary.
The specific embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As shown in Figure 1, originally two-way circulate expansion valve for being symmetrical structure, comprise being the valve body 2 that straight-tube shape has two snout cavity 2b, be provided with two-way valve assembly one and two-way valve assembly two in the valve body 2, the valve pocket 2a of two-way valve assembly one and the valve pocket 2a of two-way valve assembly two are connected.Be provided with between outlet one 2d of two-way valve assembly one and the snout cavity 2b of two-way valve assembly two and make cold-producing medium flow into the check valve assembly one that snout cavity 2b flows out, make cold-producing medium flow into the check valve assembly two that snout cavity 2b flows out between outlet one 2d of two-way valve assembly two and the snout cavity 2b of two-way valve assembly one from exporting a 2d from exporting a 2d.Two-way valve assembly one is identical with two-way valve assembly two structures, and check valve assembly one is identical with check valve assembly two structures.Originally the expansion valve that two-way circulates also comprises the shell 1 with two interface 1a, two interfaces are connected with the snout cavity 2b of two-way valve assembly one and two-way valve assembly two respectively, check valve assembly one and check valve assembly two have outlet two 2c that are connected with snout cavity respectively, and described outlet one 2d and outlet two 2c all are opened on the sidewall of valve body 2.
Specifically, check valve assembly one/check valve assembly two comprises spring base 3 that is fixed on interface 1a place and the valve piece 4 that is enclosed within valve body 2 outsides and can slides along valve body 2 outsides.Spring base 3 one ends and shell 1 be inlay card mutually, and the other end and valve body 2 be inlay card mutually, and the spring base 3 in the present embodiment is by shell 1 or valve body 2 are carried out the slot rolling processing method and fixing.Spring base 3 has the centre bore 3a that is communicated with interface 1a and snout cavity 2b, also offers the side opening 3b that is communicated with centre bore 3a and shell 1 body on the spring base 3.Shell 1 relatively outlet one 2d and export have protrusion on the inwall between two 2c ringwise retaining along 1b, retaining also is to generate by the slot rolling mode along 1b.Retaining is provided with back-up ring 5 between 1b and valve piece 4, if valve piece 4 has the spring 1 to back-up ring 5 mobile trends, and outlet two 2c can be blocked when valve piece 4 and retaining valve piece 4 when 1b leans between spring base 3 and the back-up ring 5.The material that valve piece 4 adopts hardness to be lower than valve body material is made, and is enclosed within valve body 2 outsides, and the inwall of back-up ring 5 lateral surfaces and shell 1 tightly leans, and back-up ring 5 internal diameters are greater than valve body 2 external diameters, so back-up ring 5 does not contact with valve body 2.
As shown in Figure 1 and Figure 2, the two-way valve assembly comprises that two are fixed in the valve body 2 and the valve seat 7 between import 2c and outlet 2d, and being provided with among the valve pocket 2a can be along valve pocket 2a slip and the spool 8 that matches mutually one by one with valve seat 7.Also be provided with among the valve pocket 2a and make spool 8 have spring assembly to valve seat 7 mobile trends.Offer the through-hole structure that is communicated with valve pocket 2a and snout cavity 2b on spool 8 and the valve seat 7, in valve pocket 2a, also be provided with the retaining pipe 9 that is communicated with two through-hole structures, retaining pipe 9 is and has on straight tube-like and the two ends and the position limiting structure that can spool 8 bottoms leans, the protruding 9a that the position limiting structure of present embodiment outwards expands for retaining pipe 9 two ends.Certainly, the position limiting structure of retaining pipe 9 also can be located at the block that the outer sleeve pipe of retaining pipe or welding be connected in retaining pipe two ends with fixed cover and replaces.Spool 8 has cone shape head, through-hole structure comprises and offers the taper hole 7a that is complementary with spool 8 heads on the valve seat 7, also offer the throttling pore 7b of the snout cavity 2b that is communicated with taper hole 7a and valve body 2 on the valve seat 7, offer the throttling passage 8a that is communicated with taper hole 7a and valve pocket 2a on the spool 8.Spring assembly in the present embodiment comprises respectively the spring 2 10 that the afterbody with two spools 8 leans, and spring 2 10 is enclosed within outside the retaining pipe 9, and retaining pipe 9 two ends are stretched in the throttling passage 8a of both sides spool 8.
Interface 1a place at shell 1 installs screen pack additional, so that this valve operate as normal.This valve operation principle is as follows:
At refrigerant flow hour, enter into snout cavity 2b from interface 1a, because flow is less,, can only flow into from the throttling pore 7b of valve seat 7 admittedly can not push spool 8 open, because spool 8 valve seats 7 lean, blocked by spool 8 so export a 2d, can't flow in the gap of shell 1 and valve body 2, can only be through entering into retaining pipe 9 behind the throttling passage 8a of spool 8, retaining pipe 9 other ends are connected with the throttling passage 8a of another spool 8, flow out this valve through throttling pore 7b again.The reverse inflow of cold-producing medium also is through same passage.
Along with the flow of cold-producing medium constantly increases, the pressure of snout cavity 2b also increases gradually, and when refrigerant flow increased to preset value, in the time of can't satisfying a large amount of cold-producing mediums because the diameter of throttling pore 7b is less and pour in, spool 8 was open, and spring 2 10 is squeezed.And outlet one 2d of valve body 2 sidewalls also is in open mode, and cold-producing medium is from the gap that exports a 2d and flow into valve body 2 and shell 1.The gap of valve body 2 and shell 1 could be passed through and exports two 2c and enter into snout cavity 2b so must push valve piece 4 open because the valve piece 4 of check valve assembly one exists.The valve piece 4 of the other end is because the pressure at both sides imbalance causes valve piece 4 to be open, and cold-producing medium enters into the snout cavity 2b of the other end, thereby discharges this valve; And the valve piece 4 of this end is because its pressure at both sides balance, so can not be open, cold-producing medium can not return original snout cavity 2b.
Embodiment two
As shown in Figure 3, can certainly cancel the through-hole structure that is communicated with valve pocket 2a and snout cavity 2b between spool 8 and the valve seat 7, cover is connected with packing ring 11 on spool 8, improves sealing effectiveness, no matter the small-large flow cold-producing medium all passes through from the gap that spool 8 is pushed open.How as for the micro-balance that realizes cold-producing medium, the snout cavity 2b of valve body 2 directly can be linked to each other by capillary 12, the two ends of capillary 12 can be located on the die cavity wall at spring base 3 places, also can be located at interface 1a place.In addition, be subjected to the collision of external force and be out of shape, can install protective cover additional, play a protective role in shell 1 periphery for fear of valve body 2 and shell 1.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (10)
1. expansion valve that two-way circulates, comprise valve body (2) with two snout cavities (2b), it is characterized in that, be provided with two-way valve assembly one and two-way valve assembly two in the described valve body (2), the valve pocket (2a) of valve pocket of described two-way valve assembly one (2a) and two-way valve assembly two is connected, be provided with between the outlet one (2d) of two-way valve assembly one and the snout cavity (2b) of two-way valve assembly two and make cold-producing medium flow into the check valve assembly one that snout cavity (2b) flows out, make cold-producing medium between the outlet one (2d) of two-way valve assembly two and the snout cavity (2b) of two-way valve assembly one from exporting the check valve assembly two that one (2d) flow into snout cavity (2b) outflow from exporting one (2d).
2. the expansion valve that two-way circulates according to claim 1, it is characterized in that, also comprise shell (1) with two interfaces (1a), two interfaces (1a) are connected with the snout cavity (2b) of valve body (2) respectively, described valve body (2) is straight-tube shape, described check valve assembly one and check valve assembly two have the outlet two (2c) that is connected with snout cavity (2b) respectively, and described outlet one (2d) and outlet two (2c) all are opened on the sidewall of valve body (2).
3. the expansion valve that two-way circulates according to claim 2, it is characterized in that, described check valve assembly one comprises the valve piece (4) that is fixed on the spring base (3) that interface (1a) locates and is enclosed within valve body (2) outside and can slides along valve body (2) outside, described shell (1) exports the ringwise retaining edge (1b) that has protrusion on one (2d) and the inwall of outlet between two (2c) relatively, described spring base (3) and retaining between (1b) if valve piece (4) have to the spring one (6) of retaining along (1b) mobile trend, and when valve piece (4) and retaining along (1b) when leaning described valve piece (4) can block exporting two (2c).
4. the expansion valve that two-way circulates according to claim 2, it is characterized in that, described check valve assembly one comprises the valve piece (4) that is fixed on the spring base (3) that interface (1a) locates and is enclosed within valve body (2) outside and can slides along valve body (2) outside, described shell (1) exports the ringwise retaining edge (1b) that has protrusion on one (2d) and the inwall of outlet between two (2c) relatively, described retaining also is provided with back-up ring (5) between (1b) and valve piece (4), between described spring base (3) and the back-up ring (5) if valve piece (4) has the spring one (6) to back-up ring (5) mobile trend, and when valve piece (4) with the retaining along (1b) when leaning described valve piece (4) can with the outlet two (2c) block.
5. the expansion valve that two-way circulates according to claim 4, it is characterized in that, described spring base (3) one ends and shell (1) be inlay card mutually, the other end and valve body (2) be inlay card mutually, described spring base (3) has the centre bore (3a) of connection interface (1a) and snout cavity (2b), also offers the side opening (3b) that is communicated with centre bore (3a) and shell (1) body on the described spring base (3).
6. according to claim 1 or 2 or 3 or the 4 or 5 described expansion valves that two-way circulate, it is characterized in that, described two-way valve assembly comprises that two are fixed in the valve body (2) and are positioned at outlet two (2c) and export valve seat (7) between one (2d), being provided with in the described valve pocket (2a) can be along valve pocket (2a) slip and the spool (8) that matches mutually one by one with valve seat (7), also be provided with in the described valve pocket (2a) and make spool (8) have spring assembly, all offer the through-hole structure that is communicated with valve pocket (2a) and snout cavity (2b) on described spool (8) and the corresponding valve seat (7) to valve seat (7) mobile trend.
7. according to claim 1 or 2 or 3 or the 4 or 5 described expansion valves that two-way circulate, it is characterized in that, described two-way valve assembly comprises that two are fixed in the valve body (2) and are positioned at outlet two (2c) and export valve seat (7) between one (2d), being provided with in the described valve pocket (2a) can be along valve pocket (2a) slip and the spool (8) that matches mutually one by one with valve seat (7), also be provided with in the described valve pocket (2a) and make spool (8) have spring assembly to valve seat (7) mobile trend, offer the through-hole structure that is communicated with valve pocket (2a) and snout cavity (2b) on described spool (8) and the valve seat (7), in described valve pocket (2a), also be provided with the retaining pipe (9) that is communicated with two through-hole structures.
8. the expansion valve that two-way circulates according to claim 7, it is characterized in that, described spool (8) has cone shape head, described through-hole structure comprises and offers the taper hole (7a) that is complementary with spool (8) head on the valve seat (7), also offer the throttling pore (7b) of the snout cavity (2b) that is communicated with taper hole (7a) and valve body (2) on the valve seat (7), offer the throttling passage (8a) that is communicated with taper hole (7a) and valve pocket (2a) on the described spool (8).
9. the expansion valve that two-way circulates according to claim 7 is characterized in that, is provided with the capillary (12) that is communicated with two ends snout cavities (2b) on described shell (1).
10. the expansion valve that two-way circulates according to claim 8, it is characterized in that, described spring assembly comprises respectively the spring two (10) that the afterbody with two spools (8) leans, described spring two (10) is enclosed within outside the retaining pipe (9), and described retaining pipe (9) two ends are stretched in the throttling passage (8a) of both sides spool (8).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310155896.6A CN103216980B (en) | 2013-04-27 | 2013-04-27 | Bi-direction circulation expansion valve |
| PCT/CN2013/084573 WO2014173080A1 (en) | 2013-04-27 | 2013-09-29 | Bidirectionally communicating expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310155896.6A CN103216980B (en) | 2013-04-27 | 2013-04-27 | Bi-direction circulation expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103216980A true CN103216980A (en) | 2013-07-24 |
| CN103216980B CN103216980B (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310155896.6A Active CN103216980B (en) | 2013-04-27 | 2013-04-27 | Bi-direction circulation expansion valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103216980B (en) |
| WO (1) | WO2014173080A1 (en) |
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| WO2014173080A1 (en) * | 2013-04-27 | 2014-10-30 | 温岭市恒发空调部件有限公司 | Bidirectionally communicating expansion valve |
| CN109850167A (en) * | 2019-03-13 | 2019-06-07 | 北京空天技术研究所 | A kind of two-way oil valve and its design method |
| CN109990511A (en) * | 2019-04-30 | 2019-07-09 | 宁波奥克斯电气股份有限公司 | A kind of throttling set and air conditioner |
| CN110360355A (en) * | 2019-08-12 | 2019-10-22 | 绵阳富临精工机械股份有限公司 | A kind of internal control type control valve arrangement |
| WO2020088447A1 (en) * | 2018-10-29 | 2020-05-07 | 宁波奥克斯电气股份有限公司 | Throttling apparatus and air conditioner |
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Also Published As
| Publication number | Publication date |
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| CN103216980B (en) | 2015-02-04 |
| WO2014173080A1 (en) | 2014-10-30 |
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Effective date of registration: 20221202 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. |
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