CN203274379U - One-way expansion valve - Google Patents
One-way expansion valve Download PDFInfo
- Publication number
- CN203274379U CN203274379U CN201320230056.7U CN201320230056U CN203274379U CN 203274379 U CN203274379 U CN 203274379U CN 201320230056 U CN201320230056 U CN 201320230056U CN 203274379 U CN203274379 U CN 203274379U
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- CN
- China
- Prior art keywords
- valve
- spool
- thermostatic expansion
- outlet
- expansion valve
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- 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.)
- Expired - Lifetime
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- 230000008676 import Effects 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Temperature-Responsive Valves (AREA)
Abstract
The utility model provides a one-way expansion valve and belongs to the technical field of valves. The one-way expansion valve solves the problem that due to the fact that an existing micro flow channel is formed between a valve element and a valve base, the structures of the valve element and the valve base are complex. The one-way expansion valve comprises a valve body provided with a valve cavity, the valve body is provided with an inlet and an outlet which are communicated with the valve cavity, a valve element which can slide along the valve cavity to separate the inlet from the outlet is arranged in the valve cavity, a spring assembly pushing the valve element to slide is arranged in the valve cavity, and a thin tube communicated with the inlet and the outlet is fixedly connected to the valve body. According to the one-way expansion valve, as the thin tube is communicated with the inlet and the outlet, a throttling channel of the one-way expansion valve is separated from the valve element and the valve base, and the structures of the valve element and the valve base are simplified.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of single ported thermostatic expansion valve.
Background technology
Capillary draws from copper tube and forms, and is simple in structure, causes conveniently, cheap.There is no moving component, itself be difficult for producing fault and leakage.Characteristics with auto-compensation, both cold-producing medium was under certain pressure reduction (△ p=pk-po), and the stability of flow when flowing through capillary when the cooling load variation, when condensing pressure pk increase or evaporating pressure po reduce.△ p value increases, and cold-producing medium is at capillary inner flow guide also corresponding increase, change requirement to flow to adapt to cooling load, but the ability of this compensation is less.After refrigeration compressor shuts down, high side pressure and low-pressure lateral pressure in refrigeration system can be balanced rapidly, again during starting operation, the motor starting load of refrigeration compressor is less, therefore needn't use the large motor of starting torque, this point is even more important to semiclosed and hermetically sealed refrigerating compressor unit.
It is 201210418305.5 patent of invention as application number, this Invention Announce a kind of single ported thermostatic expansion valve, this single ported thermostatic expansion valve comprises spool, valve seat, offer three circulation passage in spool, three circulation passage one ends can be connected with the transmission groove on valve seat, the other end can be connected with the outlet of valve body, also has an end to be connected with the valve pocket of valve body.Also offer the throttling pore that is communicated with transmission groove and valve body entrance point on valve seat, can stud with capillary in throttling pore; The valve body overcoat has protective cover, offers the interface relative with the outlet of valve body on protective cover, is fixed with out pipe on interface, is fixed with inlet pipe in the import department of valve body.When flow hour, cold-producing medium arrives the transmission groove by throttling pore, and three circulation passage by on spool flow out this valve at last.When the valve seat spool near the time, wherein there is the gap in the three circulation passage passway places that are connected with valve outlet with valve seat, therefore can make cold-producing medium arrive outlet, and need not valve core movement, this just requires the fitness of spool and valve base chamber to want high, when processing spool and valve seat, must guarantee both precision, this has improved difficulty of processing undoubtedly, and the structure of spool valve seat is more complicated, and production cost also increases thereupon; And the versatility of spool, valve seat is relatively poor, is difficult to it is changed and safeguards.
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 single ported thermostatic expansion valve simple in structure.
The purpose of this utility model can realize by following technical proposal: a kind of single ported thermostatic expansion valve, comprise the valve body with valve pocket, described valve body has import and the outlet that is connected with valve pocket, it is characterized in that, be provided with in described valve pocket and can slide and the spool of partition import and outlet along valve pocket, also be provided with in described valve pocket and can promote the spring assembly that spool slides, also be fixed with the capillary that is communicated with import and outlet on described valve body.
When refrigerant flow hour, can directly enter from capillary in import department, arrive the exit, and the spool of not flowing through plays throttling action.When refrigerant flow increased to preset value, capillary can not make the pressure in import department and exit reach balance, and the pressure differential at two ends increases, and spool is open, and spring is squeezed, and was in the valve open state this moment.This single ported thermostatic expansion valve is simple in structure, does not need to improve on spool, simplifies the spool manufacturing process, has saved production cost.
In above-mentioned single ported thermostatic expansion valve, be fixed with valve seat on described valve body, described spool leans with valve seat under the effect of spring assembly.Spring assembly promotes spool and valve seat leans, and valve is in closed condition.
In above-mentioned single ported thermostatic expansion valve, offer taper hole on described valve seat, have the tapering of matching with taper hole on spool.In the taper hole of the tapering inserted valve seat of spool, reduce both frictions, improve service life.
In above-mentioned single ported thermostatic expansion valve, be arranged with packing ring on described tapering.Packing ring is positioned on spool, and when spool and valve seat leant, packing ring also leant with the taper hole inwall of valve seat, has improved sealing effectiveness.
In above-mentioned single ported thermostatic expansion valve, described capillary and valve body welding are connected.Stretched side opening on valve body, observing and controlling has flange, and capillary inserts in side opening, and flange and capillary outer wall lean, and improve the contact area of welding, make welding more firm, generally adopt soldering to fix.
In above-mentioned single ported thermostatic expansion valve, described spring assembly comprises the spring base that is fixed in valve pocket and the spring that is enclosed within on spring base, and described spring one end and spool lean, and the other end and spring base lean.The inwall of spring base and valve pocket leans, and under the effect of spring force, spool has the trend that moves to valve seat all the time.
As another kind of scheme, in above-mentioned single ported thermostatic expansion valve, described spring assembly comprises spring, and described spring one end and spool lean, and the inwall of the other end and valve body leans.
In above-mentioned single ported thermostatic expansion valve, described spool afterbody is arranged with damping ring.Damping ring is used for improving the job stability of spool.
In above-mentioned single ported thermostatic expansion valve, described inlet and outlet is provided with screen pack.Guarantee the normal operation of this valve.
Compared with prior art; this single ported thermostatic expansion valve is by capillary open communication and outlet; making the throttling passage of single ported thermostatic expansion valve and spool valve seat divide is arranged; simplified the structure of spool and valve seat; cancel shell, available protective cover substitutes shell protection valve body, makes structure simpler and easy; reduce manufacture difficulty, saved processing charges.
Description of drawings
Fig. 1 is the structural representation of embodiment one single ported thermostatic expansion valve.
Fig. 2 is the structural representation of embodiment two single ported thermostatic expansion valves.
Fig. 3 is the structural representation of embodiment three single ported thermostatic expansion valves.
In figure, 1, valve body; 2, spool; 3, capillary; 4, valve seat; 5, packing ring; 6, spring; 7, spring base; 8, damping ring.
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.
Embodiment one
As shown in Figure 1, this single ported thermostatic expansion valve comprises the valve body 1 with valve pocket, and valve body 1 has import and the outlet that is connected with valve pocket.Be provided with in valve pocket and can slide and the spool 2 of partition import and outlet along valve pocket, also be provided with in valve pocket and can promote the spring assembly that spool 2 slides, also be fixed with the capillary 3 that is communicated with import and outlet on valve body 1.
Specifically, be fixed with valve seat 4 on valve body 1, spool 2 leans with valve seat 4 under the effect of spring assembly.Offer taper hole on valve seat 4, have the tapering of matching with taper hole on spool 2, be arranged with packing ring 5 on the tapering, spool 2 afterbodys are arranged with damping ring 8.
Spring assembly comprises the spring base 7 that is fixed in valve pocket and the spring 6 that is enclosed within on spring base 7, and spring 6 one ends and spool 2 lean, and the other end and spring base 7 lean.Spring base 7 leans with the inwall of valve pocket, and under the effect of spring 6 elastic force, spool 2 has the trend that moves to valve seat 4 all the time.
The present embodiment be hit by a bullet spring abutment 7 be with valve body 1 on the cover cap lean, the cover cap be connected on valve body 1.In addition, the inlet and outlet at valve body 1 is equipped with screen pack.
Be out of shape for the collision of avoiding valve body 1 and capillary 3 to be subject to external force, affect the work of this valve, can also install protective cover additional in the periphery of whole valve body 1.
Embodiment two
As shown in Figure 2, also spring base 7 and valve body 1 can be adopted and get ready or the slot rolling mode fixes.
Embodiment three
As shown in Figure 3, the afterbody of valve body 1 is directly shut, and spring base 7 is that the bottom interior wall with valve body 1 leans.
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 (8)
1. single ported thermostatic expansion valve, comprise the valve body (1) with valve pocket, described valve body (1) has import and the outlet that is connected with valve pocket, it is characterized in that, be provided with in described valve pocket and can slide and the spool (2) of partition import and outlet along valve pocket, also be provided with in described valve pocket and can promote the spring assembly that spool (2) slides, also be fixed with the capillary (3) that is communicated with import and outlet on described valve body (1).
2. single ported thermostatic expansion valve according to claim 1, is characterized in that, is fixed with valve seat (4) on described valve body (1), and described spool (2) leans with valve seat (4) under the effect of spring assembly.
3. single ported thermostatic expansion valve according to claim 2, is characterized in that, described valve seat offers taper hole on (4), and spool has the tapering of matching with taper hole on (2).
4. single ported thermostatic expansion valve according to claim 3, is characterized in that, is arranged with packing ring (5) on described tapering.
5. according to claim 1 and 2 or 3 or 4 described single ported thermostatic expansion valves, is characterized in that, described capillary (3) is connected with valve body (1) welding.
6. single ported thermostatic expansion valve according to claim 5, it is characterized in that, described spring assembly comprises and is fixed on the spring base (7) in valve pocket and is enclosed within spring (6) on spring base (7), described spring (6) one ends and spool (2) lean, and the other end and spring base (7) lean.
7. single ported thermostatic expansion valve according to claim 6, is characterized in that, described spool (2) afterbody is arranged with damping ring (8).
8. single ported thermostatic expansion valve according to claim 7, is characterized in that, described inlet and outlet is provided with screen pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320230056.7U CN203274379U (en) | 2013-04-27 | 2013-04-27 | One-way expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320230056.7U CN203274379U (en) | 2013-04-27 | 2013-04-27 | One-way expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203274379U true CN203274379U (en) | 2013-11-06 |
Family
ID=49504769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320230056.7U Expired - Lifetime CN203274379U (en) | 2013-04-27 | 2013-04-27 | One-way expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203274379U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10240830B2 (en) | 2013-07-04 | 2019-03-26 | Danfoss A/S | Expansion valve comprising a stop element |
| US10274236B2 (en) | 2013-07-04 | 2019-04-30 | Danfoss A/S | Expansion valve with a two-step variable orifice area |
| US10281181B2 (en) | 2013-07-04 | 2019-05-07 | Danfoss A/S | Expansion valve with a variable orifice area |
| WO2026021489A1 (en) * | 2024-07-26 | 2026-01-29 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
-
2013
- 2013-04-27 CN CN201320230056.7U patent/CN203274379U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10240830B2 (en) | 2013-07-04 | 2019-03-26 | Danfoss A/S | Expansion valve comprising a stop element |
| US10274236B2 (en) | 2013-07-04 | 2019-04-30 | Danfoss A/S | Expansion valve with a two-step variable orifice area |
| US10281181B2 (en) | 2013-07-04 | 2019-05-07 | Danfoss A/S | Expansion valve with a variable orifice area |
| WO2026021489A1 (en) * | 2024-07-26 | 2026-01-29 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |