CN203274378U - Bidirectional circulation expansion valve - Google Patents
Bidirectional circulation expansion valve Download PDFInfo
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- CN203274378U CN203274378U CN201320226007.6U CN201320226007U CN203274378U CN 203274378 U CN203274378 U CN 203274378U CN 201320226007 U CN201320226007 U CN 201320226007U CN 203274378 U CN203274378 U CN 203274378U
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Abstract
The utility model provides a bidirectional circulation expansion valve and belongs to the technical field of air conditioners. The bidirectional circulation expansion valve solves the problems that a larger number of potential leakage points exist and the sealing performance is quite poor due to the fact that an existing bidirectional circulation expansion valve is formed by parallel connection of two expansion valve assemblies and a valve body is fixedly connected with a protective cover in a welding mode. The bidirectional circulation expansion valve comprises a valve body provided with two inlet cavities, wherein a first bidirectional valve assembly and a second bidirectional valve assembly are arranged inside the valve body, a valve cavity of the first bidirectional valve assembly is communicated with a valve cavity of the second bidirectional valve assembly, a first one-way valve assembly is arranged between a first outlet of the first bidirectional assembly and the inlet cavity of the second bidirectional valve assembly and is used for enabling refrigerating fluid to flow from the first outlet of the first bidirectional assembly to the inlet cavity of the second bidirectional valve assembly to further flow out, and a second one-way valve assembly is arranged between a first outlet of the second bidirectional valve assembly and the inlet cavity of the first bidirectional valve assembly and is used for enabling the refrigerating fluid to flow from the first outlet of the second bidirectional valve assembly to the inlet cavity of the first bidirectional valve assembly to further flow out. The bidirectional circulation expansion valve has the advantages that the number of parts is small, the structure is simple, and assembling is quite easy.
Description
Technical field
The utility model belongs to air-conditioning technical field, relates to a kind of refrigerating of convertible frequency air conditioner machine automatization expansion valve, particularly a kind of expansion valve that two-way circulates.
Background technology
Expansion valve is mainly used in air-conditioning refrigeration system, is the important component part of refrigeration system.Expansion valve makes the liquid refrigerant of middle HTHP become the moist steam of low-temp low-pressure by its throttling, then cold-producing medium absorbs heat and reaches refrigeration in evaporimeter, 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.Bidirectional expansion valve is mainly used in cold and warm type air-conditioning system, adopts two expansion valve component parallel connections or series connection to arrange, and realizes two-way circulating function.
It is 201210418305.5 utility model patent as application number; this utility model has been announced a kind of expansion valve that two-way circulates; comprise the valve piece with two passages parallel to each other; each passage has 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 a passage is connected with the entrance point of another passage on the valve piece, the place also is welded with the protective cover that prevents that cold-producing medium from leaking when flowing through between by-pass prot and outlet at the described port of export.This expansion valve that two-way circulates is with two expansion valve component parallel connections, and parts are various, and complex structure is assembled more difficult; And the welding of a plurality of valve bodies, protective cover is fixed together, and the interface between passage or exit port is too many, and potential leak point is more, causes sealing relatively poor.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of expansion valve of two-way circulating realized.
the purpose of this utility model can realize by following technical proposal: a kind of expansion valve that two-way circulates, comprise the 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 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 from exporting one the check valve assembly one that snout cavity flows out, make cold-producing medium flow into from exporting one 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.
Originally the expansion valve that two-way circulates is 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, then flow into the snout cavity place of two-way valve assembly two by check valve assembly one, discharge at last valve body, vice versa, realizes the function that two-way circulates.
In the above-mentioned expansion valve that two-way circulates, also comprise the 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 respectively the outlet two that is connected with snout cavity, and described outlet one and outlet two all are opened on the sidewall of valve body.
Originally the expansion valve that two-way circulates only has 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, then 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 larger, enter into snout cavity from the interface of shell, enter into gap between shell and 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, due to the outlet one with two groups of symmetries and outlet two, large flow also can be realized the function that two-way circulates.This valve Welding Structure is few, and in valve, the work of each parts is all completed in a shell, so sealing is better, and simple in structure.
In the expansion valve that two-way circulates described above, 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 gear edge that has protrusion on inwall between two of described shell, described spring base and gear along between if the valve piece has to gear along the spring one of mobile trend, and can block exporting two when valve piece and gear described valve piece when leaning.Spring one is enclosed within on spring base, when refrigerant flow hour, the valve piece is subjected to the elastic force effect of spring one and is resisted against gear along upper, 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 then discharges from exporting two.
As another kind of scheme, in the expansion valve that two-way circulates described above, 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 gear edge that has protrusion on inwall between two of described shell, also be provided with back-up ring between described gear edge and 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 gear described valve piece when leaning between described spring base and back-up ring.Back-up ring is located between gear edge and valve piece, because the valve piece needs relative sliding, so and have the gap between shell, and gear has a transition arc along being to be formed by the shell processing and forming, valve piece location may occur unreliable, cold-producing medium easily flow into the residing chamber of spring one 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 expansion valve that two-way circulates described above, 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 to be connected, groove is set, by slot rolling on valve body or get ready with the embedding of groove phase and realize fixing, so back-up ring also has certain sealing effectiveness in the middle of back-up ring.For the tiny flow quantity that guarantees cold-producing medium at one at smaller range changing, need to improve the sealing effectiveness of valve piece, prevent cold-producing medium from exporting two gaps that directly enter between valve body and shell, the gap between valve piece and shell is very little.For guaranteeing that valve body is not is not worn and torn by the valve piece, the valve piece adopts hardness to make lower than the material of valve body.
In the expansion valve that two-way circulates described above, described spring base one end and shell phase inlay card, the other end and valve body phase inlay card, described spring base have the centre bore that is communicated with interface and snout cavity, also offer the side opening that is communicated with centre bore and shell body on described spring base.Spring base is fixed on shell, specifically, and an end phase inlay card of the inner of one of them spring base and valve body, and in the inner of another spring base is enclosed within on 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, opens centre bore, convenient refrigerant used circulation in the middle part of spring base, side opening is connected with the residing chamber of spring one, when being squeezed due to spring one, the valve piece slides backward, and the residing chamber of extrusion spring one opens that Main Function is the off-load step-down after side opening.Greater than valve piece snout cavity, play valve piece position-limiting action due to the spring base outer end.And when cold-producing medium flow into spring one residing chamber from the spring base side opening, with pressure-acting in valve piece cylindrical and spring side, so the mineralization pressure of valve piece poor be that this valve is imported and exported poor and spring force sum, make it possible to the valve piece all the time near gear along motionless.
In the expansion valve that two-way circulates described above, described two-way valve assembly comprises that two are fixed in valve body and in outlet one with export valve seat between two, being provided with in 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 described valve pocket spool is had to the spring assembly of valve seat mobile trend, all offer the through-hole structure that is communicated with valve pocket and snout cavity on described spool and corresponding valve seat.When flow hour, cold-producing medium can directly enter into valve pocket from through-hole structure, then flows out from the through-hole structure of the other end; Spring assembly makes spool rely on valve seat, when flow is larger, through-hole structure is not enough to satisfy the circulation of cold-producing medium, because the pressure change of snout cavity is large, spool will be open, most of cold-producing medium directly from export a gap that flow between valve body and shell, is pushed the valve piece open, flows out from another snout cavity.
As another kind of scheme, in the expansion valve that two-way circulates described above, described two-way valve assembly comprises that two are fixed in valve body and in outlet one with export valve seat between two, being provided with in 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 described valve pocket spool is had to the spring assembly of valve seat mobile trend, offer the through-hole structure that is communicated with valve pocket and snout cavity on described spool and valve seat, also be provided with the gear pipe that is communicated with two through-hole structures in described valve pocket, the gear pipe is communicated with the through-hole structure at two ends.
In the expansion valve that two-way circulates described above, described spool has cone shape head, described through-hole structure comprises and offers the taper hole that is complementary with the spool head on valve seat, also offer the throttling pore of the snout cavity that is communicated with taper hole and valve body on valve seat, offer the throttling passage that is communicated with taper hole and valve pocket on 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 expansion valve that two-way circulates described above, as another program, be provided with the capillary that is communicated with the two ends snout cavity on described shell.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.Increase sealing gasket between spool and valve seat, prevent that cold-producing medium from leaking between spool and valve seat.Be provided with the capillary of connection between two snout cavities of this valve, regulate the size of tiny flow quantity by changing size capillaceous and length.
In the expansion valve that two-way circulates described above, described spring assembly comprises respectively the spring two that the afterbody with two spools leans, and described spring two is enclosed within outside the gear pipe, and described gear pipe two ends are stretched in the throttling passage of both sides spool.A spring two only is set just can satisfies the operation of two spools, and spring two is enclosed within outside the gear pipe, make simple and compact for structurely, gear is managed in the throttling passage of direct insertion spool, installs also more convenient.
In the expansion valve that two-way circulates described above, described gear pipe be have on straight tube-like and two ends with can spool the position limiting structure that leans of bottom.Two spools valve body relatively independently slide, so the gear pipe can not all be connected with two spools.Therefore, will keep off pipe and also be designed to and to slide in throttling passage, and throttling passage also slides because possessing a convenient gear 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 manage on two ends at gear position limiting structure is set; When two spool Distance Shorteneds, the position limiting structure of at least one end can lean with the spool bottom.
In the expansion valve that two-way circulates described above, described position limiting structure comprises the projection of the outside expansion that gear pipe two ends have.
As another kind of scheme, in the expansion valve that two-way circulates described above, described position limiting structure comprises that fixed cover is located at the outer sleeve pipe of gear pipe.
As another kind of scheme, in the expansion valve that two-way circulates described above, described position limiting structure comprises that welding is connected in the block at gear pipe two ends.
In the expansion valve that two-way circulates described above, described snout cavity place is provided with screen pack.For this valve can be worked, 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 same shell, small volume, and compact conformation, 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 be provided with plug-in capillary between the snout cavity at two ends, 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 the two-way circulation expansion valve mechanism of the present embodiment one cutaway view.
Fig. 2 is the structural representation of the present embodiment one spool valve seat.
Fig. 3 is the structural representation of embodiment two.
In figure, 1, shell; 1a, interface; 1b, the gear 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, gear pipe; 9a, projection; 10, spring two; 11, packing ring; 12, capillary.
The specific embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model 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 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 from exporting a 2d check valve assembly one that snout cavity 2b flows out, make cold-producing medium flow into from exporting a 2d 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.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 respectively outlet two 2c that are connected with snout cavity, 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 the spring base 3 and the valve piece 4 that is enclosed within valve body 2 outsides and can slides along valve body 2 outsides that is fixed on interface 1a place.Spring base 3 one ends and shell 1 phase inlay card, the other end and valve body 2 phase inlay cards, the spring base 3 in the present embodiment are 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 spring base 3.Shell 1 relatively outlet one 2d and export have protrusion on inwall between two 2c ringwise gear along 1b, gear is also to generate by the slot rolling mode along 1b.Gear is provided with back-up ring 5 between 1b and valve piece 4, between spring base 3 and back-up ring 5, if valve piece 4 has to the spring 1 of back-up ring 5 mobile trends, and valve piece 4 can block outlet two 2c when valve piece 4 leans along 1b with gear.Valve piece 4 adopts hardness to make lower than the material of valve body material, 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 valve body 2 and the valve seat 7 between import 2c and outlet 2d, and being provided with in 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 valve pocket 2a spool 8 is had to the spring assembly of 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 valve seat 7, also be provided with the gear pipe 9 that is communicated with two through-hole structures in valve pocket 2a, gear pipe 9 be have on straight tube-like and two ends with can spool the position limiting structure that leans of 8 bottoms, the protruding 9a that the position limiting structure of the present embodiment outwards expands for gear pipe 9 two ends.Certainly, the position limiting structure of gear pipe 9 also can be located at the block that the outer sleeve pipe of gear pipe or welding be connected in gear 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 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 valve seat 7, offer the throttling passage 8a that is communicated with taper hole 7a and valve pocket 2a on 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 gear pipe 9, and gear 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 the normal operation of this valve.This valve operation principle is as follows:
At refrigerant flow hour, enter into snout cavity 2b from interface 1a, because flow is less, admittedly can not push spool 8 open, can only flow into from the throttling pore 7b of valve seat 7, 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 gear pipe 9 after the throttling passage 8a of spool 8, gear pipe 9 other ends are connected with the throttling passage 8a of another spool 8, then flow out this valve through throttling pore 7b.The reverse inflow of cold-producing medium is also through the 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 flow into the gap of valve body 2 and shell 1 from exporting a 2d.The gap of valve body 2 and shell 1 is because the valve piece 4 of check valve assembly one exists, and could pass through and exports two 2c and enter into snout cavity 2b so must push valve piece 4 open.The valve piece 4 of the other end causes valve piece 4 to be open because pressure at both sides is uneven, 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 due to its pressure at both sides balance, so can not be open, cold-producing medium can not return to 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 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 connected 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 subject to the collision of external force and be out of shape for fear of valve body 2 and shell 1, can install in shell 1 periphery protective cover additional, playing a protective role.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (10)
1. expansion valve that two-way circulates, comprise the 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 described valve body (2), the valve pocket (2a) of the 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 from exporting one (2d) check valve assembly one that snout cavity (2b) flows out, make cold-producing medium flow into from exporting one (2d) check valve assembly two that snout cavity (2b) flows out between the outlet one (2d) of two-way valve assembly two and the snout cavity (2b) of two-way valve assembly one.
2. the expansion valve that two-way circulates according to claim 1, it is characterized in that, also comprise the 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 respectively the outlet two (2c) that is connected with snout cavity (2b), 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 gear edge (1b) that has protrusion on one (2d) and the inwall of outlet between two (2c) relatively, described spring base (3) and gear between (1b) if valve piece (4) has the spring one (6) to gear along (1b) mobile trend, and when valve piece (4) with the gear along (1b) when leaning described valve piece (4) can with the outlet two (2c) block.
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 gear edge (1b) that has protrusion on one (2d) and the inwall of outlet between two (2c) relatively, described gear also is provided with back-up ring (5) between (1b) and valve piece (4), between described spring base (3) and back-up ring (5) if valve piece (4) have to the spring one (6) of back-up ring (5) mobile trend, and when valve piece (4) with the gear 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) phase inlay card, the other end and valve body (2) phase inlay card, 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 described spring base (3).
6. according to claim 1 and 2 or 3 or 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 valve body (2) and are positioned at the valve seat (7) that exports between two (2c) and outlet one (2d), being provided with in 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 described valve pocket (2a) spool (8) is had to the spring assembly of valve seat (7) mobile trend, all offer the through-hole structure that is communicated with valve pocket (2a) and snout cavity (2b) on described spool (8) and corresponding valve seat (7).
7. according to claim 1 and 2 or 3 or 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 valve body (2) and are positioned at the valve seat (7) that exports between two (2c) and outlet one (2d), being provided with in 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 described valve pocket (2a) spool (8) is had to the spring assembly of 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 valve seat (7), also be provided with the gear pipe (9) that is communicated with two through-hole structures in described valve pocket (2a).
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 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 valve seat (7), offer the throttling passage (8a) that is communicated with taper hole (7a) and valve pocket (2a) on described spool (8).
9. according to claim 2 or 3 or the 4 or 5 described expansion valves that two-way circulate, 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 gear pipe (9), and described gear pipe (9) two ends are stretched in the throttling passage (8a) of both sides spool (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320226007.6U CN203274378U (en) | 2013-04-27 | 2013-04-27 | Bidirectional circulation expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320226007.6U CN203274378U (en) | 2013-04-27 | 2013-04-27 | Bidirectional circulation expansion valve |
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| CN203274378U true CN203274378U (en) | 2013-11-06 |
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| CN201320226007.6U Withdrawn - After Issue CN203274378U (en) | 2013-04-27 | 2013-04-27 | Bidirectional circulation expansion valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216980A (en) * | 2013-04-27 | 2013-07-24 | 温岭市恒发空调部件有限公司 | Bi-direction circulation expansion valve |
| 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 |
| CN111998577A (en) * | 2020-07-15 | 2020-11-27 | 盾安环境技术有限公司 | Two-way throttle valve |
-
2013
- 2013-04-27 CN CN201320226007.6U patent/CN203274378U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216980A (en) * | 2013-04-27 | 2013-07-24 | 温岭市恒发空调部件有限公司 | Bi-direction circulation expansion valve |
| 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 |
| 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 |
| 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 |
| CN111998577A (en) * | 2020-07-15 | 2020-11-27 | 盾安环境技术有限公司 | Two-way throttle valve |
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