CN208670218U - A kind of expansion valve - Google Patents

Abstract

The utility model discloses a kind of expansion valve, including valve body, valve body includes first interface, second interface, the first chamber；Valve body includes the second chamber, and valve body includes bottom of chamber wall and lug boss, and lug boss convexedly stretches in bottom of chamber wall, and lug boss is provided with through hole, and through hole is connected to the first chamber；Valve body includes the second through hole, second through hole includes first port and second port, first port is connected to the second chamber, second port is connected to first interface, valve body includes the first side, the second side, and first interface is arranged in the first side, and second interface is arranged in the second side, using the first side to the second side as width direction, first port and through hole in the direction of the width at a distance from be less than second port and through hole in the direction of the width at a distance from.So in the case where realizing that the second through hole is connected to the second chamber, first interface, the second chamber can be designed smaller, and the side for allowing valve body to open up the second chamber reduces, and make valve body structure more small and exquisite to a certain extent.

Description

A kind of expansion valve

Technical field

The utility model relates to refrigerating fields.

Background technique

Expansion valve is the components generally used in refrigeration system, and expansion valve generally comprises valve body, adjustment seat, valve rod, valve Core and temperature sensing package, adjustable flow.In some cases, in the case where in order to meet some systems, so that expansion valve Aperture is zero, needs to realize by the solenoid valve of peripheral hardware under normal circumstances.It is some in the prior art, can be by expansion valve and electricity Magnet valve is integrated, and the second chamber needs the valve port of additional setting solenoid valve due to the valve body of expansion valve, can make to a certain extent The valve body structure of expansion valve is larger.

Utility model content

The utility model provides a kind of expansion valve, including adjustment seat, valve core of the electromagnetic valve, the valve body include first interface, Second interface, the first chamber, the adjustment seat are at least partially disposed at first chamber；It is characterized in that, the valve body includes the Two chambers, the bottom corresponding to second chamber are provided with bottom of chamber wall and lug boss, and the lug boss convexedly stretches in the bottom of chamber wall, The lug boss is provided with the first through hole, and first through hole is connected to first chamber, and first chamber can pass through institute The first through hole is stated to be connected to second chamber；The second interface can be connected to first chamber；

The valve body is additionally provided with the second through hole, and second through hole includes first port and second port, described First port is connected to second chamber, and the second port is connected to the first interface, and the first interface passes through described Second through hole is connected to second chamber；

At least one of which in first through hole and second through hole is access ramp, and the first end Mouthful with the center line of first through hole in the direction of the width at a distance from be less than the second port and first through hole Center line distance in the direction of the width.

The above-mentioned technical proposal of the utility model includes lug boss by the way that the first chamber and the second chamber, valve body is arranged in valve body, Lug boss setting the first through hole be connected to the first chamber, valve body include the second through hole, the first port of the second through hole and The connection of second chamber, the second port of the second through hole are connected to first interface, first through hole and second through hole In at least one of which be access ramp, the center line of the first port of the second through hole and the first through hole is in the direction of the width Distance be less than the center line of the second port and first through hole in the width direction at a distance from.So in reality In the case that existing second through hole is connected to the second chamber, first interface, the second chamber can be designed smaller, so that valve body opens up the The side of two chambers can reduce, and make valve body structure more small and exquisite to a certain extent.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of a view of embodiment of the utility model；

Fig. 2 is the schematic diagram of another view of structure shown in Fig. 1；

Fig. 3 is the structural schematic diagram of valve body shown in FIG. 1；

Fig. 4 is the top view of structure shown in Fig. 1；

Fig. 5 is the broken isometric schematic diagram of the H-H line along Fig. 4；

Fig. 6 is the side schematic view of structure shown in Fig. 1；

Fig. 7 is the diagrammatic cross-section of the line B-B along Fig. 6；

Fig. 8 is the side schematic view of structure shown in Fig. 3；

Fig. 9 is the broken isometric schematic diagram of the line A-A along Fig. 8；

Figure 10 is the schematic diagram of the another embodiment of the valve body of the utility model；

Figure 11 is the structural schematic diagram of another embodiment of the utility model；

Figure 12 is the diagrammatic cross-section of line C-C in Figure 11；

Figure 13 is the diagrammatic cross-section of line D-D in Figure 11；

Figure 14 is the side schematic view of valve body shown in Fig. 8；

Figure 15 is the top view of valve body described in Fig. 8；

Figure 16 is the diagrammatic cross-section of F-F line in Figure 15；

Figure 17 is the diagrammatic cross-section of E-E line in Figure 15.

Specific embodiment

- Fig. 6 referring to Fig.1, Fig. 1, Fig. 2 illustrate that a kind of structural schematic diagram of embodiment of the utility model, Fig. 1 illustrate The structural schematic diagram of expansion valve 100, expansion valve 100 include valve body 11, power head assembly 12, drive rod, core assembly, adjustment seat Component, valve core of the electromagnetic valve 16.

Valve body 11 includes first interface 111, second interface 112, return flow line import 113 and return flow line outlet 114, valve Body 11 includes the first chamber 115 and the second chamber 116, adjusts holder assembly 15 and is at least partially disposed at the first chamber 115, valve core of the electromagnetic valve 16 It is at least partially disposed at the second chamber 116.It is in valve opening state in valve core of the electromagnetic valve 16, the second chamber 116 is connected to the first chamber 115, the Two chambers 116 are connected to first interface 111, in this way, fluid enters from first interface 111, into after the second chamber 116, can be entered First chamber 115, and pass through the adjustment effect of core assembly 14, the fluid flow of second interface 112 is left in control, in this way, realizing The control of flow, the case where needing flow to be zero, valve core of the electromagnetic valve is in close valve state, and truncation enters the first chamber from the second chamber Fluid so that the fluid flow for leaving second interface is considered as zero.

Referring to Fig. 3, valve body 11 includes bottom of chamber wall 1101, chamber side wall 1102 and lug boss 1103, and chamber side wall 1102 is to be formed A part of wall portion corresponding to second chamber 116, lug boss 1103 convexedly stretches in bottom of chamber wall 1101, and lug boss 1103 is located at the second chamber 116 centers, lug boss 1103 are provided with the first through hole 1104, and the first through hole 1104 is connected to the first chamber 115, and second Chamber 116 can be connected to by the first through hole 1104 with the first chamber 115.

Referring to Fig. 4, valve body 11 includes the second through hole 117, and first interface 111 is not connected to directly with the first chamber 115, the One interface 111 is connected to after can passing sequentially through the second through hole 117, the second chamber 116, the first through hole 1104 with the first chamber 115.

Second through hole 117 includes first port 1171 and second port 1172, first port 1171 and the second chamber 116 Connection forms wall portion a part of first port 1171 in bottom of chamber wall 1101, forms wall portion another part of first port 1171 In chamber side wall 1102, second port 1172 is connected to first interface 111, and first port 1171 is located at respect to the first through hole 1104 Close to 1102 position of chamber side wall, second port 1172 is connected to first interface 111, in the first through hole 1104 and the second through hole At least one of which be access ramp, wherein access ramp refers to that opposite valve body is processed for the machine direction of the second chamber, first The extending direction of through hole 1104 and the not parallel setting of 117 extending direction of the second through hole, are separator bar with bottom of chamber wall 1101, the The extension line of pass through aperture 1104 intersects with the extension line of the second through hole 117 in 116 open side of the second chamber, i.e. first end Mouth the distance between 1171 and 1104 center line of the first through hole are less than 1104 center line of second port 1172 and the first through hole The distance between.In this way, can shorten the second through hole and the first through hole it is intracavitary second at a distance from, to a certain extent can be with The opening diameter for reducing the second chamber facilitates the width for reducing the side that valve body opens up the second chamber, further may make valve body Structure is more small and exquisite.

In present embodiment, valve body 11 is square structure, and valve body 11 includes the first side 1105, the second side 1106, the First interface 111 is arranged in three sides 1107, the first side 1105, and second interface 112, the first side is arranged in the second side 1106 1105 are oppositely arranged with the second side 1106, and third side 1107 is adjacent with the first side 1105, third side 1107 and second Side 1106 is adjacent；It is width direction, first port 1171 and the first through hole with 1105 to the second side 1106 of the first side The distance of 1104 center line in the width direction is less than second port 1172 and the center line of the first through hole 1104 exists Distance in the width direction.Because can not be directly connected between the first chamber 115 and first interface 111, the first chamber 115 It is arranged in a staggered manner with the needs of first interface 111, but the second through hole 117 needs to be connected to the second chamber 116 and first interface 111, and the Pass through aperture 1104 needs to be connected under specific circumstances the first chamber 115 and the second chamber 116.Run through in this way, can not only shorten second At a distance from hole and the first through hole are intracavitary second, the opening diameter of the second chamber can be reduced to a certain extent, helps to contract Small valve body opens up the width of the side of the second chamber, it is also possible that the height of valve body reduces, so that valve body structure is more small and exquisite.

Referring to Fig. 3, third side 1107 includes platform part 1108, and the second chamber 116, platform part is arranged in platform part 1108 1108 include first position 11081 and second position 11082, and first position 11081 and second position 11082 are projected on first The position of side 1105 is located at the two sides of first interface 111 on valve body axial direction, to be vertical perpendicular to bottom of chamber wall 1101 Direction, 117 duct of the second through hole are access ramp.Platform part 1108 is the installation position of valve core of the electromagnetic valve 16, and platform part is set It sets, so that valve core of the electromagnetic valve installation is more convenient, and the first position of platform part and second position are projected on the position of the first side The two sides for being located at first interface on valve body axial direction are set, so that the second through hole duct is shorter as far as possible, valve body is processed more It is convenient.

Lug boss 1103 and the salable setting of valve core of the electromagnetic valve 16, valve core of the electromagnetic valve 16 include sealing 161, sealing 161 can be plastic seal block, and it is consistent that the duct of the first through hole 1104 and lug boss 1103 protrude out direction, and lug boss 1103 end face is arranged substantially in parallel with bottom of chamber wall 1101, in this way, the installation direction of valve core of the electromagnetic valve 16 and lug boss 1103 are convex It stretches that direction is consistent, facilitates the sealed set between the sealing of valve core of the electromagnetic valve and the end face of lug boss, be conducive to solenoid valve Precision controlling.

Valve body 11 includes second through hole wall 1109, and second through one that hole wall 1109 is the second through hole wall portion of formation Point, second connect through hole wall 1109 with chamber side wall 1102, and second runs through the center line of hole wall 1109 and the first through hole 1104 The distance between be not less than chamber side wall 1102 and the first through hole 1104 the distance between center line.In this way, making second to pass through The distance between perforated wall and the first through hole are as big as possible, facilitate the second through hole and are connected to first interface, and obstructed Cross under the connection situation of the first through hole, the second through hole is not connected to individually with the first chamber so that the first chamber and first interface it Between wall portion distance it is as big as possible, be conducive to the stability of the first chamber.

Lug boss 1103 has certain altitude, and the extension line of the second through hole towards the second chamber does not have with the lug boss 1103 There is intersection point, and second through hole does not have intersection point towards the extension line of the second chamber and the chamber side wall.In this way, facilitating second The processing in through hole duct so that the processing of the second through hole does not influence the structure of lug boss, while also reducing to a certain extent Influence of the processing of second through hole to chamber side wall.Here it should be noted that lug boss 1103 can be other structures substitution, protrusion Similar valve seat is played the role of in portion 1103, and the structure of other similar functions can also be applied.

In the present embodiment, lug boss 1103 can be located at 116 center of the second chamber, since the second chamber 116 can be used In installation valve core of the electromagnetic valve, if 1103 eccentric setting of lug boss, the structure that will lead to valve core of the electromagnetic valve is also required to bias, electromagnetism Valve core structure is complex, and installation difficulty is also larger.

Third side 1107 includes basal part 11071, and basal part 11071 is located at platform part 1108 along valve body axial direction Two sides, using the boring direction of the first chamber as the longitudinal direction of valve body, between basal part 11071 and the center line of valve body longitudinal direction Distance be less than platform part 1108 and valve body longitudinal direction the distance between center line.11071 opposed platforms portion of basal part 1108, in the recessed setting in third side 1107, facilitate the weight for reducing valve body.

Referring to Fig. 4-Fig. 7, chamber side wall 1102 includes first step wall 11021, and second through hole 117 interrupts described First step wall 11021, i.e. first step wall 11021 are non-circular structure, and valve core of the electromagnetic valve 16 includes end face 162, the end The setting that at least partly offsets with first step wall 11021 in face 162, sealing 161 have sealing surface 163, end face 162 and sealing The distance between face 163 is equal to the distance between top surface and first step wall 11021 of lug boss 1103.In this way, by will be electric The end face of magnet valve spool offsets with first step wall, and the sealed set of sealing and lug boss may be implemented, and guarantees closing valve In the case of, valve core of the electromagnetic valve blocks the connection of the first through hole and the second chamber.

Referring to Fig. 8 and Fig. 9, chamber side wall 1102 includes annular wall 11022, be with the opening direction of the second chamber 116 it is upper, it is described Annular wall 11022 is located at 11021 top of first step wall, and valve core of the electromagnetic valve 16 includes side wall 164 and sealing ring 165, institute Stating side wall 164 includes recess portion 166, and the sealing ring 165 is at least partially disposed at the recess portion 166, the side wall 164 with it is described Annular wall 11022 is opposite, and the sealing ring 165 and 11022 sealed set of annular wall.Annular wall 11022 is located at first 11021 top of step wall, and annular wall 11022 and 164 sealed set of side wall, further guarantee valve core of the electromagnetic valve and valve body It is fitted close.

The form of second through hole 117 can have a variety of, be not limited to illustrated structure on figure, run through below to second Several specific embodiments in hole are described.

As an implementation, as shown in figure 3, second through hole 117 is two or more, and described second passes through 117 orifice shapes of perforating are circle, and the equivalent circulation area of single second through hole is less than working as first through hole 1104 Circulation area is measured, the sum of equivalent circulation area of the second through hole 117 is not less than the equivalent circulation area of first through hole.

As another embodiment, second through hole is three, and the second through hole orifice shapes are circle Shape, the equivalent circulation area of second through hole are less than the equivalent circulation area of first through hole, and described two second The sum of equivalent circulation area of through hole is not less than the equivalent circulation area of first through hole.

As another embodiment, as shown in Figure 10, Figure 10 illustrates the side of the another embodiment of valve body 11 ' View, the second through hole 117 ' is one, and 117 ' orifice shapes of the second through hole are ellipse, and second through hole is worked as Measure the equivalent circulation area that circulation area is not less than the through hole.

1, Figure 11 illustrates that the structural schematic diagram of another embodiment, Figure 11 illustrate the knot of expansion valve 200 referring to Fig.1 Structure schematic diagram, expansion valve 200 include valve body 11 ", power head assembly 12, drive rod, core assembly, adjust holder assembly, solenoid valve Spool 16.11 " structure of valve body is substantially similar to 11 structure of valve body, to avoid repeating burden, no longer describes valve body in detail herein 11 ' detailed structure is illustrated below for the special construction of valve body 11 ".

2- Figure 17 referring to Fig.1, valve body 11 " includes lug boss 1103 ', and lug boss 1103 ' is located at 116 centre bit of the second chamber It sets, lug boss 1103 ' is provided with the first through hole 1104 ', and the first through hole 1104 ' is connected to the first chamber 115.

Valve body 11 " includes the second through hole 117 ", and the second through hole 117 " includes first port 1171 and second port 1172, first port 1171 is located at respect to the first through hole 1104 close to 1102 position of chamber side wall, second port 1172 and first Interface 111 is connected to, the extending direction of the first through hole 1104 ' and the not parallel setting of 117 " extending direction of the second through hole, with chamber Bottom wall 1101 is separator bar, and the extension line of the extension line of the first through hole 1104 ' and the second through hole 117 " is in second chamber The intersection of 116 open sides.

First through hole 1104 ' includes third port 1104a and the 4th port 1104b, and third port 1104a is located at the Two chambers, 116 position, the 4th port 1104b are located at 115 position of the first chamber, 117 " straight line of third port 1104a and the second through hole The distance between extension line is less than the distance between 117 " linear extension line of the 4th port 1104b and the second through hole.In this way, Using perpendicular to the bottom of chamber wall, as vertical direction, second through hole is straight channel, first through hole is access ramp, institute The equivalent circulation area for stating the second through hole is not less than the equivalent circulation area of first through hole.In this way, the second chamber The relatively not set access ramp of opening the first through hole it is smaller, in this way, the second through hole and the first through hole can be shortened the Two intracavitary distances, can reduce the opening diameter of the second chamber to a certain extent, facilitate diminution valve body and open up the second chamber The width of side reduces the height of valve body, so that valve body structure is more small and exquisite.

It should be understood that above embodiments are merely to illustrate the utility model and not limit described by the utility model Technical solution, such as "front", "rear", "left", "right", "upper", "lower" isotropy are defined, although this specification reference The above embodiments have been carried out detailed description to the utility model, still, those skilled in the art should understand that, Person of ordinary skill in the field still can be combined with each other the utility model, modify or equivalent replacement, and one The technical solution and its improvement for cutting the spirit and scope for not departing from the utility model, the right that should all cover in the utility model are wanted It asks in range.

Claims (10)

1. a kind of expansion valve, including valve body, adjustment seat, valve core of the electromagnetic valve, the valve body includes first interface, second interface, One chamber, the adjustment seat are at least partially disposed at first chamber；It is characterized in that, the valve body includes the second chamber, described Bottom corresponding to second chamber is provided with bottom of chamber wall and lug boss, and the lug boss convexedly stretches in the bottom of chamber wall, the lug boss It is provided with the first through hole, first through hole is connected to first chamber, and first chamber can run through by described first Hole is connected to second chamber；The second interface can be connected to first chamber；

The valve body is additionally provided with the second through hole, and second through hole includes first port and second port, and described first Port is connected to second chamber, and the second port is connected to the first interface, and the first interface passes through described second Through hole is connected to second chamber；

At least one of which in first through hole and second through hole is access ramp, and the first port with The distance of the center line of first through hole in the direction of the width is less than in the second port and first through hole The distance of heart line in the direction of the width.

2. expansion valve according to claim 1, which is characterized in that using the bottom of chamber wall as separator bar, described first runs through The extension line in hole intersects with the extension line of second through hole in the second chamber open side.

3. expansion valve according to claim 1 or 2, which is characterized in that using perpendicular to the bottom of chamber wall as vertical direction, institute Stating the second through hole is access ramp, and first through hole is straight channel, and the equivalent circulation area of second through hole is not small In the equivalent circulation area of first through hole.

4. expansion valve according to claim 1 or 2, which is characterized in that using perpendicular to the bottom of chamber wall as vertical direction, institute Stating the second through hole is straight channel, and first through hole is access ramp, and the equivalent circulation area of second through hole is not small In the equivalent circulation area of first through hole.

5. expansion valve according to claim 1 or 2, which is characterized in that the duct of first through hole and the protrusion It is consistent that portion protrudes out direction, and the valve body includes second running through hole wall and chamber side wall, and the chamber side wall is to form second chamber A part of wall portion, described second through hole wall be a part to form the wall portion of second through hole, described second runs through Hole wall is connect with the chamber side wall, and the described second the distance between center line for running through hole wall and first through hole is not less than The distance between the center line of the chamber side wall and the through hole.

6. expansion valve according to claim 1 or 2, which is characterized in that second through hole is towards second chamber Extension line and the lug boss do not have an intersection point, and second through hole is towards the extension line and the chamber side wall of second chamber There is no intersection point.

7. expansion valve according to claim 1 or 2, which is characterized in that

Second through hole is two or more, and the second through hole orifice shapes are circle, and single described second passes through The equivalent circulation area of perforation is less than the equivalent circulation area of first through hole；The equivalent circulating face of second through hole The sum of product is not less than the equivalent circulation area of first through hole；

Or second through hole is one, and the second through hole orifice shapes are ellipse, second through hole Equivalent circulation area be not less than the through hole equivalent circulation area.

8. expansion valve according to claim 1 or 2, which is characterized in that the valve body includes chamber side wall, the chamber side wall packet First step wall is included, second through hole interrupts the first step wall, and the chamber side wall includes annular wall, with described second The opening direction of chamber be it is upper, the annular wall is located above the first step wall；

The expansion valve includes valve core of the electromagnetic valve, and the valve core of the electromagnetic valve includes end face, the end face at least partly with it is described First step wall offsets setting；

The valve core of the electromagnetic valve includes side wall and sealing ring, and the side wall includes recess portion, and the sealing ring is at least partially disposed at The recess portion, the side wall is opposite with the annular wall, and the sealing ring and the annular wall sealed set.

9. expansion valve according to claim 1 or 2, which is characterized in that

The valve body includes the first side, the second side, and the first interface is arranged in first side, and second side is set The second interface is set, the valve body includes third side, and the third side includes platform part, described in the platform part setting Second chamber, the platform part include first position and second position, and the first position and second position are projected on described first The position of side is located at the two sides of the first interface on the valve body axial direction,

The third side includes basal part, and the basal part is located at the platform part along the two sides of the valve body axial direction, Using the boring direction of first chamber as the longitudinal direction of valve body, the center line of the basal part and the valve body longitudinal direction it Between distance be less than the platform part and the valve body longitudinal direction the distance between center line.

10. expansion valve according to claim 1 or 2, which is characterized in that using perpendicular to the bottom of chamber wall as vertical direction, Second through hole is access ramp, and first through hole is straight channel, and the equivalent circulation area of second through hole is not Less than the equivalent circulation area of first through hole；The duct of first through hole and the lug boss protrude out direction one It causing, the valve body includes second through hole wall and chamber side wall, and the chamber side wall is a part to form the wall portion of second chamber, Described second through hole wall is a part to form the wall portion of second through hole, and described second through hole wall and the chamber side Wall connection, described second is not less than the chamber side wall and institute through the distance between center line of hole wall and first through hole State the distance between the center line of the first through hole；Extension line and the protrusion of second through hole towards second chamber Portion does not have intersection point, and second through hole does not have intersection point towards the extension line of second chamber and the chamber side wall；

Second through hole is two or more, and the second through hole orifice shapes are circle, and single described second passes through The equivalent circulation area of perforation is less than the equivalent circulation area of first through hole；The equivalent circulating face of second through hole The sum of product is not less than the equivalent circulation area of first through hole；Or second through hole is one, and described second Through hole orifice shapes are ellipse, and the equivalent circulation area of second through hole is not less than the equivalent of first through hole Circulation area；

The valve body includes chamber side wall, and the chamber side wall includes first step wall, and second through hole interrupts the First Rank wall, the chamber side wall includes annular wall, with the opening direction of second chamber be it is upper, the annular wall is located at the First Above rank wall；

The valve core of the electromagnetic valve includes end face, the setting that at least partly offsets with the first step wall of the end face；

The valve core of the electromagnetic valve includes side wall and sealing ring, and the side wall includes recess portion, and the sealing ring is at least partially disposed at The recess portion, the side wall is opposite with the annular wall, and the sealing ring and the annular wall sealed set；

The valve body includes the first side, the second side, and the first interface is arranged in first side, and second side is set The second interface is set, the valve body includes third side, and the third side includes platform part, described in the platform part setting Second chamber, the platform part include first position and second position, and the first position and second position are projected on described first The position of side is located at the two sides of the first interface on the valve body axial direction；

The third side includes basal part, and the basal part is located at the platform part along the two sides of the valve body axial direction, Using the boring direction of first chamber as the longitudinal direction of valve body, the center line of the basal part and the valve body longitudinal direction it Between distance be less than the platform part and the valve body longitudinal direction the distance between center line.