CN110392799A - Throttling set and the refrigerating circulation system for having the throttling set - Google Patents
Throttling set and the refrigerating circulation system for having the throttling set Download PDFInfo
- Publication number
- CN110392799A CN110392799A CN201880017352.4A CN201880017352A CN110392799A CN 110392799 A CN110392799 A CN 110392799A CN 201880017352 A CN201880017352 A CN 201880017352A CN 110392799 A CN110392799 A CN 110392799A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- support member
- needle part
- spring support
- riveting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of throttling set and has the refrigerating circulation system of the throttling set, can be avoided the variation of the setting length of the helical spring under the authorized pressure being fixed by caulking to spring support member before and after needle part.By the material with high hardness composition with the material than the spring support member (14) for making the material rivet deformation of needle part (11), it is easier to deform spring support member (14) when carrying out riveting processing with the riveting cutter as shown in Fig. 7 A~Fig. 7 D (40,40', 41).And, since the corner (11f, 11g) for being formed in the riveting slot (11d) of needle part (11) side is undeformed, therefore when making needle part (14) rivet deformation, it can inhibit deformation of the spring support member (14) to central axis direction, needle part (11) and the relative position of spring support member (14) are difficult to change, as a result, the variation of the load on spring of the helical spring (13) of riveting front and back, i.e. setting length becomes smaller.
Description
Technical field
The present invention relates to throttling set and has the refrigerating circulation system of the throttling set.
Background technique
In refrigerating circulation system in air-conditioning device, has pressure differential instead of the capillary proposition as throttling set
Throttling set structure.The throttling set of pressure differential in order to efficiently run compressor according to extraneous gas temperature and
The refrigerant pressure between condensator outlet and evaporator inlet is most suitably controlled, and allows to change compressor
In the refrigerating circulation system of revolution, also can most it be suitably controlled from the viewpoint of Labor-saving corresponding with the revolution of compressor
The structure of refrigerant pressure.Throttling set is for example engaged in the one end for importing refrigerant and is connected to the primary side of condenser and matches
Pipe, the secondary side line for being connected to evaporator is engaged in the other end of discharging refrigerant.
As shown in Patent Document 1, pressure differential throttling set includes being engaged in refrigerating circulation system as main component
The pipe main body of piping, be fixed on pipe main body inner peripheral portion conduit, be integrally formed in conduit and constitute adjustment refrigerant stream
The valve seat and needle part of the refrigerant flow adjustment section of amount, the spiral that needle part is reinforced to the direction close relative to valve seat
Spring, the spring support member of the one end of support helix spring, support and stop needle part one end with round-ended cylinder shape
Limiting component and constitute.
On the spring support member linking part of needle part, spring support member is fixed by riveting processing.Spring branch
The protrusion that the recess for the spring support member that support part part is formed and being processed by riveting is formed bites spring support member connection
Portion and fix.One end of support helix spring on spring support member, the other end of helical spring is by the spring supporting of conduit
Portion's support.
When the end face of needle part is connected on the flat inner face of the closed end of limiting component, tapering with needle part
On the corresponding position of the open end of valve port in the peripheral part in portion, the peripheral part of tapered portion is with the open end relative to valve port
Periphery formed predetermined gap mode configure.At this point, forming section between the tapered portion of needle part and the open end of valve port
Stream portion.The amount setting in the scheduled gap formed and the open end periphery relative to such valve port passes through throttle
The flow of scheduled refrigerant.
From the viewpoint of energy saving, system reliability, relative in the specified operating of system, each operating condition when institute
Pressure difference (inlet pressure of the refrigerant of the primary side in pipe main body and the refrigerant of secondary side before and after determining throttling set
The difference of the pressure of outlet), suitably ensure the degree of superheat in evaporator and improve efficiency, in order to prevent because liquid falls back (refrigeration
Agent is not above-mentioned state (gas), and entrance supply of the refrigerant with the state of liquid from the outlet of evaporator to compressor shows
As) caused by compressor fault, it is expected that obtaining valve opening with high accuracy and continuing to fit after perseveration
When valve opening.
Throttling set shown in patent document 1 is being configured at using air as the state of the leakage flow measuring device of fluid
Under, in a manner of becoming air mass flow identical with target leakage flow, by relative to the pin thread being formed on needle part
Relative to formed spring support member on negative thread conveying capacity and make the spiral shell being configured between conduit and spring support member
The setting for revolving spring loads variation, and after target aperture is obtained when confirming a reservation pressure difference, bullet is riveted relative to needle part
Spring support member and fix.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2016-223622 bulletin
Summary of the invention
Problems to be solved by the invention
But if spring support member is riveted using riveting cutter, even if relative to spring support member in spring branch
Support part part radially encounters riveting cutter, and spring support member also not only in the radially deformation of spring support member, also exists
It is deformed on the central axis direction of spring support member.As a result, before and after riveting processing, the spring supporting portion of spring support member
Change with the relative position of needle part.The load on spring (setting length) that can have the helical spring in predetermined pressure as a result, becomes
Change and deviates such project from the target valve opening in predetermined pressure.
Moreover, such as Fig. 9 of patent document 1, if the imperfect thread portion of the pin thread of needle part and riveting are connected with slot,
When riveting spring support member, the side wall of the whorl side of the slot is lower, and spring support member is difficult to bite the whorl side of slot, i.e.
The corner for the side wall side being lower.Therefore, spring support member is easy to move and deform to whorl side especially after riveting processing,
The setting of the load on spring (setting length) of helical spring is easy to deviate.
In addition, if riveting cutter deviates from the center of the center of pin axis direction of the slot of needle part, riveting cutter is to needle part
Slot an adjacent corner it is close, there will be the protrusions of spring support member formed by riveting will not be equably closely sealed
In the center of pin axis direction two sides of the slot of needle part corner and the case where generate gap.Moreover, if the wall of spring support member
Thickness is then clamped by being riveted the corner of the slot of cutter and needle part, also has and generate intensity not on spring support member
The situation of foot.
The present invention is can be avoided its purpose is to provide one kind and rivets on needle part in view of the scheme of such project
The throttling set of the variation of the setting length of the helical spring under predetermined pressure before and after fixed spring support member and has this
The refrigerating circulation system of throttling set.
Solution for solving the problem
In order to solve the above problems, the present invention is throttling set, it is characterized in that, have the piping for being configured at supply refrigerant
And both ends with the pipe main body for the open end being connected in the piping, be configured at above-mentioned pipe main body inner peripheral portion and have valve
The valve seat of mouth can configure and control the opening area of the valve port with the valve port relative to above-mentioned valve seat with being toward or away from
Tapered portion and be connected to the end of the tapered portion and left relative to above-mentioned valve port and to the upstream side of above-mentioned refrigerant stream extend
Guiding axle portion needle part, be fixed by caulking to above-mentioned needle part spring support member, be fixed on than in above-mentioned pipe main body
The position of above-mentioned valve seat in circumference leans on the upstream side of above-mentioned refrigerant stream and can slidably configure the guiding of above-mentioned needle part
The guide part of axle portion is configured between above-mentioned spring support member and above-mentioned guide part and connects to the valve port relative to above-mentioned valve seat
The reinforcing component that close mode reinforces above-mentioned needle part, the hardness of the material of above-mentioned spring support member is than above-mentioned needle part
The hardness of material is low.
The circle-shaped slot for being connected to above-mentioned guiding axle portion, the groove height of the two sides of above-mentioned slot are formed on above-mentioned needle part
Equal, the protrusion that the recess that above-mentioned spring support member can be generated and being processed by riveting is formed bites above-mentioned slot and rivets
It is fixed on above-mentioned needle part.
Width along the above-mentioned slot of the central axis direction of above-mentioned needle part can be wider than the width of above-mentioned recess.
Above-mentioned needle part be formed with left from above-mentioned slot and to the central axis direction of above-mentioned needle part extend pin thread, on
Spring support member is stated to be formed with negative thread and above-mentioned pin thread can be screwed into the negative thread.
The chamfer amount of the angle of above-mentioned slot can be the 1/3 or less of the depth of above-mentioned slot.
The depth of above-mentioned slot can be smaller than the wall thickness of the part of the riveting processing of above-mentioned spring support member.
Can be by the recess that is formed of riveting processing of above-mentioned spring support member faces each other and substantially parallel two
The recess of line segment shape.
Above-mentioned needle part is formed with the sun for being connected to above-mentioned guiding axle portion and extending to the central axis direction of above-mentioned needle part
Screw thread, the slot for being connected to the pin thread and extending to the central axis direction of above-mentioned needle part, above-mentioned spring support member can be with shape
At having negative thread and be screwed into above-mentioned pin thread in the negative thread, the above-mentioned refrigerant stream of the thread of above-mentioned pin thread it is secondary
Skew back face, which abuts and is riveted with the primary side inclined-plane of the above-mentioned refrigerant stream of the thread of above-mentioned negative thread, is fixed on above-mentioned needle
Component.
The refrigerating circulation system for having throttling set of the invention has evaporator, compressor and condenser, above-mentioned section
Flowing device is the device for being set to the piping being configured between the outlet of condenser and the entrance of evaporator.
Invention effect
Throttling set according to the present invention and the refrigerating circulation system for having the throttling set, above-mentioned spring support member
Material hardness it is lower than the hardness of the material of above-mentioned needle part.Therefore, it can be avoided the riveting fixed spring branch on needle part
The variation of the setting length of the bolt spring under predetermined pressure before and after the part of support part.
Detailed description of the invention
Fig. 1 is the cross-sectional view for indicating the structure of an embodiment of throttling set of the invention.
Fig. 2 is an example for being diagrammatically denoted by the refrigerating circulation system of each embodiment using throttling set of the invention
The figure of structure.
Fig. 3 A is the structure for indicating to be applicable in the needle assemblies of an example of valve opening method of adjustment of throttling set of the invention
Cross-sectional view.
Fig. 3 B is the structure for indicating to be applicable in the needle assemblies of an example of valve opening method of adjustment of throttling set of the invention
Cross-sectional view.
Fig. 4 A is a part of needle part shown in FIG. 1 and the partial sectional view of spring support member.
Fig. 4 B is a part of the needle part in Fig. 4 A and the outside drawing of spring support member.
Fig. 4 C is the IVC direction view in Fig. 4 B.
Fig. 5 A is the partial sectional view that the corner of the locally slot of the needle part in enlarged drawing 3B indicates.
Fig. 5 B is the partial sectional view of the corner statement of the locally slot of the needle part in enlarged drawing 3B.
Fig. 6 is the figure for indicating the characteristic line of valve opening of the explanation for one embodiment of throttling set of the invention.
Fig. 7 A is the spring for indicating to be used in an embodiment of throttling set of the invention together with spring support member
The figure of an example of the riveting cutter of support member.
Fig. 7 B is the figure for indicating the variation of riveting cutter shown in Fig. 7 A.
Fig. 7 C is the riveting cutter for indicating to be used in the spring support member of an embodiment of throttling set of the invention
Another exemplary figure.
Fig. 7 D is the cross-sectional view for observing the section of the VIID-VIID line in Fig. 7 A in the direction of the arrow.
Fig. 8 A is the partial sectional view of another needle assemblies of throttling set of the invention.
Fig. 8 B is showing the case where being connected to each other for the thread of needle part and spring support member in explanatory diagram 8A
It is intended to.
Specific embodiment
Hereinafter, the embodiment about throttling set of the invention, is described in detail.
As shown in Fig. 2, throttling set is configured at outlet and the evaporator 1 of the condenser 3 in the piping of refrigerating circulation system
Outlet between.Throttling set is engaged in a side line Du1 in one end 10E1 of aftermentioned pipe main body 10, in discharging refrigerant
The other end 10E2 of pipe main body 10 be engaged in secondary side line Du2.The outlet of side line Du1 connection condenser 3 and section
Device is flowed, the entrance of secondary side line Du2 connection evaporator 1 is connect with throttling set.As shown in Fig. 2, in the outlet of evaporator 1
By being engaged in the piping of the piping Du3 of the outlet of evaporator 1, the entrance for being engaged in condenser 3 between the entrance of condenser 3
Du4 connect compressor 2.Compressor 2 carries out drive control by control unit (not shown).Refrigeration in refrigerating circulation system as a result,
Agent is for example recycled along arrow shown in Fig. 2.
As shown in figure 1 shown in amplification, throttling set is as the pipe that main element includes that the piping with refrigerating circulation system engages
Main body 10, the conduit 12 for being fixed in 10 inner peripheral portion of pipe main body are integrally formed in conduit 12 and constitute the stream of adjustment refrigerant
The valve seat 12V and needle part 11 of the refrigerant flow adjustment section of amount, to the direction close relative to valve seat 12V to needle part 11
The helical spring 13 of reinforcing, the one end of support helix spring 13 spring support member 14, block one end of needle part 11
Limiting component 15 with round-ended cylinder shape.
It is fixed on the middle part that one end in the inner peripheral portion from pipe main body 10 is left with preset distance to have than pipe main body
The peripheral part of the fixed part 12A of the conduit 12 of the small outer diameter of 10 internal diameter.
Conduit 12 is made up such as the material with copper, brass or aluminium or stainless steel of machining.Conduit 12 by
In the fixed part 12A for the inner peripheral portion for being fixed in pipe main body 10 compared to aftermentioned intercommunicating pore 12C downstream, compared to even
Through-hole 12C on the upstream side can the guide part 12B that guides of the guiding axis 11c slidably to aftermentioned needle part 11 constitute.
The protrusion that the recess for the pipe main body 10 that conduit 12 is generated and being processed by riveting is formed bites its fixed part 12A's
Periphery groove portion and be fixed.
Peripheral part of the conduit 12 in the end of the guide part 12B of one end of the upstream side near pipe main body 10 has metal
The limiting component 15 of system.
It is stung by the protrusion formed by the recess for riveting the limiting component 15 formed and processing one end of limiting component 15
Enter in the slot of the end of guide part 12B and is fixed in guide part 12B.Limiting component 15 with round-ended cylinder shape is to pipe main body 10
One end of upstream side extends, and has closing end in the other end, covers helical spring 13 and spring support member 14.In addition,
It, which closes end, has flat inner face.Its inner face is integrally formed in one end of needle part 11, and support stops to be screwed into spring
The end face of the adjusting screw 11e of the negative thread of one end of support member 14.As a result, other than the recess 15CA1 of limiting component 15
Part inner peripheral surface and guide part 12B end peripheral part between form scheduled gap.Therefore, from the one of pipe main body 10
The refrigerant of the side 10E1 supply is held to flow into the inner peripheral portion of limiting component 15 by the gap.
Even if a lateral pressure intensely changes as a result, the pressure inside limiting component 15 can also change therewith, therefore not
Valve opening corresponding with pressure difference how can be accessed by the speed of its pressure change.
Valve port 12P, the hole portion 12b of the valve seat 12V of fixed part 12A in conduit 12 is formed on common central axis.
At this point, since the fixed part 12A and guide part 12B in conduit 12 is integrally formed, the valve port 12P of valve seat 12V and hole
Portion 12b is accurately proceed processing on common central axis in the mode for keeping its center consistent with each other and becomes easy.
Between the valve seat 12V in fixed part 12A and guide part 12B, intercommunicating pore 12C is formed immediately below in valve seat 12V.
Intercommunicating pore 12C makes the peripheral part of valve port 12P and conduit 12 and the inner peripheral portion of pipe main body 10 by transtracheal catheter 12 in the radial direction thereof
Between be connected to.
Valve seat 12V in conduit 12 has the valve port 12P of the tapered portion 11b in insertion needle part 11 in internal central portion.
Valve port 12P has the circular open that the central axis along valve seat 12V is penetrated through with scheduled constant diameter.
Needle part 11 is made up such as the material by copper alloy or stainless steel of machining, as main element
Including the guiding axis in the tapered portion 11b formed towards valve seat 12V, the hole portion 12b that can be slidably embedded in guide part 12B
Portion 11c, it is formed in the riveting slot 11d for being oriented to the front end of axle portion 11c.It is also set up on needle part 11 secondary with tapered portion 11b
The protrusion 11a of side connection.
The needle part 11 of the tapered portion 11b of the circular cone shape with scheduled coning angle one end, i.e. with riveting slot 11d
When the front end for the adjusting screw 11e being integrally formed is connected to the inner face of the closed end of limiting component 15, from valve port 12P with pre-
Set a distance, which positions away from, has the base portion with the diameter bigger than the diameter of valve port 12P, the company i.e. with aftermentioned protrusion 11a
Knot point.
Pass through riveting processing fixed spring support member 14 in the riveting slot 11d of the needle part 11 of Fig. 4 A.Spring supporting
The material hardness of component 14 is the material low relative to the hardness of the material for the needle part 11 for being formed with riveting slot 11d.Spring branch
Support part part 14 due to being formed by the material lower than 11 hardness of needle part, riveting processing and made of spring support member 14
Recess 14CA1 formed protrusion bite riveting slot 11d the side guiding axle portion 11c the side corner 11f and adjusting screw 11e angle
Portion 11g.In addition, the riveting slot 11d of needle part 11 is left with distance L from the region for forming aftermentioned adjusting screw 11e, riveting
Straight line portion (having the region with guiding axle portion 11c same diameter) is set between slot 11d and adjusting screw 11e.That is, with including riveting
Access slot 11d is isolated with the adjusting screw 11e in imperfect thread portion and is formed.Also, rivet the side adjusting screw 11e of slot 11d
Groove height d2The groove height d of (from the bottom of riveting slot 11d to the distance of corner 11g) with the side guiding axle portion 11c of riveting slot 11d1
(from the bottom of riveting slot 11d to the distance of corner 11f) is identical.Therefore, when riveting processing, both corner 11f, 11g are equal
Ground tightly bites in spring support member 14.By these structures, spring support member 14 can be obtained relative to needle part 11
Steadily fix.
The support helix spring 13 on the spring supporting portion 14a of the spring support member 14 towards above-mentioned guide part 12B
Helical spring 13 is wrapped in one end on the spring supporting cylindrical portion 14c of spring support member 14.The other end quilt of helical spring 13
It is supported in the spring supporting portion of above-mentioned guide part 12B.The abutting part and spring supporting being connect with the spring receiving portion of guide part 12B
It leaves within a predetermined distance the front end in the spring supporting portion of component 14.
Spring supporting portion is screwed into the pin thread of the riveting slot 11d of the needle part 11 adjusting screw 11e being integrally formed
In the female threaded hole of the inner peripheral portion of part 14.Adjusting screw 11e is the component for adjusting the active force of helical spring 13.
After the active force by adjusting screw 11e adjustment helical spring 13, by by riveting the bullet formed and processing
The recess 14CA1 of spring support member 14 and the protrusion formed bite in riveting slot 11d, are capable of fixing adjusting screw 11e relative to bullet
The position of spring support member 14.
When the end face of adjusting screw 11e is abutted with the flat inner face of the closed end of limiting component 15, in needle part 11
Tapered portion 11b peripheral part in position corresponding with the open end of valve port 12P on, the peripheral part of tapered portion 11b is with phase
The mode for forming predetermined gap for the periphery of the open end of valve port 12P configures.At this point, in the tapered portion 11b of needle part 11
Throttle is formed between the open end of valve port 12P.So-called throttle refers to the periphery from valve port 12P to tapered portion 11b's
The intersection point of the bus of the vertical line and tapered portion 11b of the bus position (most narrow portion) nearest apart from valve port 12P periphery.The vertical line is described
Circular conical surface area be throttle opening area.In the situation that the pressure of the refrigerant in pipe main body 10 is predetermined value or less
Under, the end face of adjusting screw 11e is with the pressure of the active force with helical spring 13 and the refrigerant from a side line Du1
Poor corresponding predetermined pressure is connected to the inner face of the closed end of limiting component 15.
Passed through not by the adjustment of the active force (setting of helical spring loads) of the adjusting screw 11e helical spring 13 generated
The valve opening setting device of diagram carries out.The needle assemblies 16' of Fig. 3 A includes conduit 12, the valve port 12P for being inserted into conduit 12 and hole
Spring support member 14' that the adjusting screw 11e of needle part 11, needle part 11 in portion 12b is screwed into predetermined amount, it is configured at
Helical spring 13 and structure between the end of the guide part 12B of the spring supporting portion 14'a and conduit 12 of spring support member 14'
At.
Also, Fig. 3 A is the cross-sectional view before spring support member rivets, and Fig. 3 B is after spring support member rivets
Cross-sectional view.In Fig. 3 A and Fig. 3 B, same symbol is marked about constituent element identical with constituent element shown in FIG. 1,
Omit its repeated explanation.
In figure 3 a, helical spring 13 is wrapped on the spring supporting cylindrical portion 14'c of spring support member 14'.Spring branch
The cylindrical portion 14'b of the lower section of support part part 14' does not carry out riveting processing.By with scheduled specified as obtaining in this state
The metered flow of valve opening makes to rotate the rotation of needle part 11 and carry out valve opening setting, and the load on spring of helical spring 13 (is set
Measured length) it is adjusted to scheduled value.Then, pass through the part corresponding with the riveting slot 11d of needle part 11 to cylindrical portion 14'b
Riveting processing is carried out, the needle assemblies 16 after riveting processing shown in Fig. 3 B are obtained.
In such a configuration, it is being generated by the pressure of refrigerant and is acting on the power on needle part 11 no more than spiral bullet
In the case where the active force of spring 13, the refrigerant by a side line Du1 and when the direction shown in the arrow supplies in Fig. 2,
The pressure of refrigerant by the peripheral part of the inner peripheral portion of one end 10E1, pipe main body 10 Jing Guo pipe main body 10 and limiting component 15 it
Between, access 12C, above-mentioned throttle and be depressurized, then, refrigerant is by the inner peripheral portion of the specified part 12A of conduit 12 with pre-
Fixed flow is discharged from other end 10E2.
Moreover, being generated in the pressure by refrigerant and acting on the effect that the power on needle part 11 is more than helical spring 13
In the case where power, the refrigerant that is flowed by above-mentioned throttle to the periphery from valve port 12P further away from direction push
Needle part 11.Flow increases with the increase of pressure difference as a result,.
In the present invention, as above-mentioned, the material of needle part 11 is used such as relative to the material hardness of spring support member 14
High material, for example, the combination of the material of needle part 11 and spring support member 14 can be content as shown in the table.
Table 1
| Needle part | Spring support member |
| Stainless steel (Hv300~400) | Copper alloy (Hv150~200) |
| Stainless steel (Hv300~400) | Aluminium (Hv90~140) |
| Copper alloy (Hv150~200) | Aluminium (Hv90~140) |
Pass through the high material structure of the material of the spring support member 14 of the material rivet deformation with hardness than making needle part 11
At when carrying out riveting processing with the riveting cutter 40 as shown in Fig. 7 A~Fig. 7 D, 40', 41, it is easier to make spring support member
14 deformations.Moreover, because corner 11f, 11g for being formed in the riveting slot 11d of 11 side of needle part are undeformed, therefore make spring branch
When 14 rivet deformation of part of support part, spring support member 14 can be inhibited to the change of central axis direction (central axis direction of needle part 11)
The relative position of shape, needle part 11 and spring support member 14 is difficult to change, as a result, the bullet of the helical spring 13 of riveting front and back
The variation of spring load (setting length) becomes smaller.
In addition, in Figure 4 A, straight line portion is arranged between riveting slot 11d and adjusting screw 11e (to be had and guiding axle portion
The region of 11c same diameter).Riveting the distance between slot 11d and adjusting screw 11e L is the tune for further including imperfect thread portion
Whole screw 11e does not reach the distance of riveting slot 11d.It is cut if the arrival such as the imperfect thread portion of adjusting screw 11e rivet slot 11d
The side wall of riveting slot 11d is cut, corner 11g is located at center of pin axis side, i.e. groove height d compared to corner 11f2Than groove height d1It is low.Its
As a result, being easy to produce gap or spring support member 14 between spring support member 14 and corner 11g after riveting processing
It is easy to shoal to biting for corner 11g.In this way, since corner 11g and the clamping force of spring support member 14 die down, spring supporting
Component 14 be easy to adjusting screw 11e lateral deviation from.In addition, if the thread and bullet in imperfect thread portion of adjusting screw 11e etc.
Spring support member 14 contacts, then threadingly tooth rotates spring support member 14, on the direction of screw loosening, is easy in this case
It is mobile to the side adjusting screw 11e.After riveting processing, if spring support member 14 is mobile to the side adjusting screw 11e, needle portion
The relative position of part 11 and spring support member 14 changes, also, due in the riveting slot 11d including corner 11f side wall with
Gap is generated between spring support member 14, therefore spring support member 14 can generate loosening relative to needle part 11.
In contrast, in the present invention, formation being isolated with adjusting screw 11e by the way that slot 11d will be riveted, makes groove height d2
With groove height d1It is equal, prevent in riveting, after riveting because caused by vibration etc. spring support member 14 to adjusting screw
11e lateral deviation is from can reduce the variation of the load on spring (setting length) of helical spring 13.
In addition, as shown in Figure 4 A, the recess of the periphery of the spring support member 14 formed by riveting cutter 40,40', 41 is wide
It spends W and forms (w > W) smaller relative to the width w for the riveting slot 11d for being previously formed in needle part 11.Spring supporting portion as a result,
The corner that deformation of the part 14 to central axis direction is formed on the riveting slot 11d of needle part 11 inhibits, and can further reduce
State the variation of the load on spring (setting length) of the helical spring 13 when the riveting of spring support member 14.
It is such as above-mentioned, as shown in Figure 5A, corner 11f, 11g of the riveting slot 11d of needle part 11, can there is no chamfering.Alternatively,
As shown in Figure 5 B, corner 11f, 11g can be the groove depth d relative to riveting slot 11di(i=1,2) 1/3 chamfer amount below.
That is, the chamfer amount D of corner 11f, 11g of riveting slot 11d is 0≤D≤di/ 3, the angle of the riveting slot 11d by making needle part 11
The groove depth d of portion 11f, 11g for no chamfering (seamed edge) or relative to riveting slot 11d is 1/3 chamfer amount below, by riveting
When the deformation of caused spring support member 14, the corner of the riveting slot 11d of needle part 11 is bitten by spring support member 14
11f, 11g can inhibit spring support member 14 to deviate to the position of central axis direction, can further reduce spiral when riveting
The variation of the load on spring (setting length) of spring 13.
In addition, as shown in Figure 4 A, the groove depth d of the riveting slot 11d of needle part 11i(i=1,2) is than spring support member 14
The wall thickness t of cylindrical portion 14b constitute (d smalllyi< t).The position that even riveting cutter 40,40', 41 are encountered as a result, to
In the case that the side of the corner 11f or 11g of the riveting slot 11d of needle part 11 are deviateed, spring support member 14 is also able to maintain that
Scheduled wall thickness.Therefore, the protrusion for being able to maintain the recess of the spring support member 14 generated and being processed by riveting and being formed
Intensity, it is difficult to generate that the gap due to caused by application pressure repeatedly, intensity is insufficient.
Above-mentioned riveting processing by each riveting cutter 40,40' shown in Fig. 7 A~Fig. 7 D, two of 41 as one group simultaneously
It is carried out in a manner of spring support member 14 is mutually opposite and clamps, is not the complete cycle of spring support member 14, at least two
A position more than two recess formed above.
In the face of the central axis direction perpendicular to spring support member 14 of riveting cutter 40,40' shown in Fig. 7 A, Fig. 7 B
Radius of curvature R, R' be greater than spring support member 14 riveting cylindrical portion 14b radius r.The case where riveting cutter 40 of Fig. 7 A
Under, two recess are formed in cylindrical portion 14b, in the case where the riveting cutter 40' of Fig. 7 B, due to a cutter is divided into two and
Four recess are formed on cylindrical portion 14b.In addition, the section shape of the thickness direction of the point of a knife 40a of the riveting cutter 40 of Fig. 7 A is such as
Shown in Fig. 5 A, Fig. 5 B etc., is formed to the recess 14CA1 semi-circular shape of spring support member 14, be as illustrated in fig. 7d curved surface.
In this way, significantly constituting riveting by the radius r of the cylindrical portion 14b being riveted relative to spring support member 14
Cutter 40,40' point of a knife 40a, 40'a radius of curvature, in the knife of the riveting cutter 40,40' of encountering spring support member 14
The rib of sharp 40a, 40'a generate space S, S', and spring support member 14 can be in spring support member 14 radially to the space
S, S' is deformed.Central axis direction of the spring support member 14 to spring support member 14 when as a result, due to being able to suppress riveting
Deflection, therefore the load on spring (setting length) of the helical spring 13 when spring support member 14 rivets can be further reduced
Variation.
In addition, the recess 14CA1 of spring support member 14 shown in Fig. 1 etc. can be opposed to be configured at substantially in parallel
The structure of the line segment shape in two regions.Using riveting cutter 41 shown in Fig. 7 C, as shown in figure 4, by formed relative to each other and
The recess 14CA1 of the two line segment shapes configured substantially in parallel, since meeting is in the riveting cutter 41 for encountering spring support member 14
Point of a knife 41a rib on generate big space S the case where than riveting cutter 40,40' ", therefore spring support member 14 can be
Spring support member 14 radially to the space S " deformation.Thereby, it is possible to inhibit the spring support member 14 when riveting to bullet
The deflection of the central axis direction of spring support member 14 can further reduce the spring of the helical spring 13 of riveting processing front and back
The variation of load (setting length).
In the above-described embodiments, as shown in FIG. 1 to FIG. 5 B, indicate recess 14CA1 be formed in spring supporting portion 14a just under
The structure of the position of side, but it is not limited to this structure, it, can be by the riveting slot 11'd of needle part 11' as shown in Fig. 8 A, Fig. 8 B
It is configured at compared to adjusting screw 11'e by secondary side (downstream side).Moreover, Fig. 8 B be in order to illustrate and medelling record in
Hold, for convenience, the quantity of thread is fewer than practical, and the height of thread is recorded higher.
It is identical when in this case, with adjustment valve opening, the two of the thread of the adjusting screw 11'e of one side needle part 11'
Secondary skew back face is abutted with primary side (upstream side) inclined-plane of the thread of spring support member 14, rivets processed springs support on one side
Component 14.It is processed by the riveting, is extended between caulking part and threaded portion because of deformation, since thread abutting part is detached from, because
This needle part 11' and the relative position of spring support member 14 change, spring supporting portion 14a relative to needle part 11'
Amount of movement can be limited to the bolt-clearance amount D or less of adjusting screw 11e.
Therefore, it is configured at compared to adjusting screw 11'e by the way that slot 11'd will be riveted by secondary side, riveting can be processed
In variable quantity inhibit adjusting screw 11e thread pitch amount hereinafter, can reduce riveting processing before and after helical spring 13
Load on spring (setting length) variation.
As above-mentioned, by each embodiment, (set to reduce the load on spring of helical spring 13 of riveting processing front and back
Length) variation, therefore even if to have the refrigerating circulation system of throttling set of the invention, the flow deviation of refrigerating cycle
Become smaller, the efficiency of system improves.
Symbol description
10-pipe main bodys, 11-needle parts, 11a-protrusion, 11b-tapered portion, 11c-guiding axle portion, 11d-riveting
Slot, 11e-adjusting screw, the corner 11f, 11g-, 12-conduits, 12b-hole portion, 12A-fixed part, 12B-guide part,
12C-intercommunicating pore, 12P-valve port, 12V-valve seat, 13-helical springs, 14-spring support members, 14a-spring supporting
Portion, 14b-cylindrical portion, 14c-spring supporting cylindrical portion, 14CA1-spring support member recess, 15-limiting components,
15CA1-limiting component recess, 16-needle assemblies, 40,41-riveting cutters, 40a, 41a-point of a knife.
Claims (9)
1. a kind of throttling set, which is characterized in that
Have:
It is configured at the piping of supply refrigerant and has and the pipe main body for the open end being connected in the piping at both ends；
It is configured at the inner peripheral portion of above-mentioned pipe main body and the valve seat with valve port；
There is the valve port relative to above-mentioned valve seat can configure with being toward or away from and control the opening face of the valve port for needle part
It long-pending tapered portion and is connected to the end of the tapered portion and is left relative to above-mentioned valve port and to the upstream side of above-mentioned refrigerant stream
The guiding axle portion of extension；
It is fixed by caulking to the spring support member of above-mentioned needle part；
The position of the above-mentioned valve seat in the inner peripheral portion than above-mentioned pipe main body is fixed on by the upstream side of above-mentioned refrigerant stream and can
Slidably configure the guide part of the guiding axle portion of above-mentioned needle part；And
It is configured at direction between above-mentioned spring support member and above-mentioned guide part and close to the valve port relative to above-mentioned valve seat
To above-mentioned needle part reinforcing reinforcing component,
The hardness of the material of above-mentioned spring support member is lower than the hardness of the material of above-mentioned needle part.
2. throttling set according to claim 1, which is characterized in that
The circle-shaped slot for being connected to above-mentioned guiding axle portion, the groove height phase of the two sides of above-mentioned slot are formed on above-mentioned needle part
Deng,
Recess that above-mentioned spring support member is generated and being processed by riveting and the protrusion that is formed bites above-mentioned slot and it is solid to rivet
Due to above-mentioned needle part.
3. throttling set according to claim 2, which is characterized in that
Width along the above-mentioned slot of the central axis direction of above-mentioned needle part is wider than the width of above-mentioned recess.
4. described in any item throttling sets according to claim 1~3, which is characterized in that
Above-mentioned needle part be formed with left from above-mentioned slot and to the central axis direction of above-mentioned needle part extend pin thread,
Above-mentioned spring support member is formed with negative thread, is screwed into above-mentioned pin thread in the negative thread.
5. according to the described in any item throttling sets of claim 2~4, which is characterized in that
The chamfer amount in the corner of above-mentioned slot is 1/3 or less the depth of above-mentioned slot.
6. according to the described in any item throttling sets of claim 2~5, which is characterized in that
The depth of above-mentioned slot is smaller than the wall thickness of the part for being riveted processing of above-mentioned spring support member.
7. described in any item throttling sets according to claim 1~6, which is characterized in that
Above-mentioned spring support member by the riveting recess that is formed of processing by facing each other and two substantially parallel line segment shapes
Recess is constituted.
8. throttling set according to claim 1, which is characterized in that
Above-mentioned needle part is formed with the pin thread for being connected to above-mentioned guiding axle portion and extending to the central axis direction of above-mentioned needle part
Be connected to the pin thread and to the central axis direction of above-mentioned needle part extend slot,
Above-mentioned spring support member is formed with negative thread and is screwed into above-mentioned pin thread, the screw thread of above-mentioned pin thread in the negative thread
The primary side inclined-plane of the above-mentioned refrigerant stream on the secondary side inclined-plane and thread of above-mentioned negative thread of the above-mentioned refrigerant stream of tooth supports
It connects and is riveted and be fixed on above-mentioned needle part.
9. a kind of refrigerating circulation system, which is characterized in that
Have evaporator, compressor and condenser,
The described in any item throttling sets of 1~claim 8 of claim are set to piping, which is configured at above-mentioned condenser
Outlet the entrance of above-mentioned evaporator between.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017061369A JP2018162861A (en) | 2017-03-27 | 2017-03-27 | Throttle device and freezing cycle system having the same |
| JP2017-061369 | 2017-03-27 | ||
| PCT/JP2018/004649 WO2018179909A1 (en) | 2017-03-27 | 2018-02-09 | Throttling device, and refrigeration cycle system provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110392799A true CN110392799A (en) | 2019-10-29 |
Family
ID=63674706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880017352.4A Pending CN110392799A (en) | 2017-03-27 | 2018-02-09 | Throttling set and the refrigerating circulation system for having the throttling set |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2018162861A (en) |
| CN (1) | CN110392799A (en) |
| WO (1) | WO2018179909A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06322755A (en) * | 1993-05-16 | 1994-11-22 | Kunio Iwabori | Joint of column and its production |
| CN102359632A (en) * | 2011-08-31 | 2012-02-22 | 浙江盾安机械有限公司 | Throttling valve |
| CN203550354U (en) * | 2012-10-16 | 2014-04-16 | 三菱电机株式会社 | Throttling device and refrigerating cycle device |
| CN204513864U (en) * | 2014-05-16 | 2015-07-29 | 株式会社鹭宫制作所 | Throttling arrangement and possess the refrigerating circulation system of this throttling arrangement |
| CN106164552A (en) * | 2014-04-17 | 2016-11-23 | 株式会社鹭宫制作所 | Throttling arrangement and the refrigerating circulation system possessing this throttling arrangement |
| JP2017048985A (en) * | 2015-09-04 | 2017-03-09 | 株式会社鷺宮製作所 | Throttle device and refrigeration cycle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3328896B2 (en) * | 1995-02-01 | 2002-09-30 | 本田技研工業株式会社 | Caulking structure of actuator case for pulley for continuously variable transmission |
| JP2007121972A (en) * | 2005-10-31 | 2007-05-17 | Nidec Sankyo Corp | Polygon mirror rotary driving device |
-
2017
- 2017-03-27 JP JP2017061369A patent/JP2018162861A/en not_active Ceased
-
2018
- 2018-02-09 WO PCT/JP2018/004649 patent/WO2018179909A1/en active Application Filing
- 2018-02-09 CN CN201880017352.4A patent/CN110392799A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06322755A (en) * | 1993-05-16 | 1994-11-22 | Kunio Iwabori | Joint of column and its production |
| CN102359632A (en) * | 2011-08-31 | 2012-02-22 | 浙江盾安机械有限公司 | Throttling valve |
| CN203550354U (en) * | 2012-10-16 | 2014-04-16 | 三菱电机株式会社 | Throttling device and refrigerating cycle device |
| CN106164552A (en) * | 2014-04-17 | 2016-11-23 | 株式会社鹭宫制作所 | Throttling arrangement and the refrigerating circulation system possessing this throttling arrangement |
| CN204513864U (en) * | 2014-05-16 | 2015-07-29 | 株式会社鹭宫制作所 | Throttling arrangement and possess the refrigerating circulation system of this throttling arrangement |
| JP2017048985A (en) * | 2015-09-04 | 2017-03-09 | 株式会社鷺宮製作所 | Throttle device and refrigeration cycle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018179909A1 (en) | 2018-10-04 |
| JP2018162861A (en) | 2018-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106164552B (en) | Throttling set and the refrigerating circulation system for having the throttling set | |
| US10190807B2 (en) | Expansion valve | |
| CN109114237A (en) | Motor-driven valve and refrigerating circulation system | |
| US10054343B2 (en) | Throttle device | |
| US10208867B2 (en) | Throttling device and refrigeration cycle | |
| CN109114284A (en) | Motor-driven valve and refrigerating circulation system | |
| US20180010705A1 (en) | Throttle device and refrigerating cycle | |
| US9945592B2 (en) | Throttle device | |
| CN110392799A (en) | Throttling set and the refrigerating circulation system for having the throttling set | |
| CN107148544B (en) | Throttling set and the refrigerating circulation system for having the throttling set | |
| JP6325992B2 (en) | Throttle device and refrigeration cycle system | |
| CN109219716A (en) | Motor-driven valve | |
| CN107191606A (en) | It is a kind of accurately to continuously adjust the choke valve of Working fluid flow resistance | |
| CN204513864U (en) | Throttling arrangement and possess the refrigerating circulation system of this throttling arrangement | |
| US10222107B2 (en) | Throttle device and refrigeration cycle system with same | |
| CN105650318B (en) | Expansion valve | |
| US10837683B2 (en) | Throttling device and refrigeration cycle | |
| CN113251160A (en) | Electric valve | |
| CN107407513B (en) | Throttling set and the refrigerating circulation system for having the throttling set | |
| JP2021055711A (en) | Motor-driven valve and refrigeration cycle system | |
| CN102119308B (en) | Integration of a delta-p expansion valve for COP-optimal regulation in a high-pressure connection, in particular an internal heat exchanger | |
| CN106288548B (en) | Throttling set and the refrigerating circulation system for having the throttling set | |
| DE112016001110T5 (en) | Ejector and ejector refrigeration cycle | |
| CN105588380B (en) | Throttling arrangement and the refrigerating circulation system for possessing the throttling arrangement | |
| CN105626922B (en) | Heating power expansion valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191029 |