CN207379122U - For the restriction expansion device of vapor-compression refrigerant cycle - Google Patents
For the restriction expansion device of vapor-compression refrigerant cycle Download PDFInfo
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- CN207379122U CN207379122U CN201721466920.8U CN201721466920U CN207379122U CN 207379122 U CN207379122 U CN 207379122U CN 201721466920 U CN201721466920 U CN 201721466920U CN 207379122 U CN207379122 U CN 207379122U
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- orifice plate
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Abstract
The utility model is related to a kind of restriction expansion device for vapor-compression refrigerant cycle, including refrigerant skirt, single-hole throttle screens, one-stage expansion pipe, perforated orifice plate, compound expansion pipe and collapsible tube；Refrigerant skirt, single-hole throttle screens, one-stage expansion pipe, perforated orifice plate, compound expansion pipe and collapsible tube are sequentially welded to connect successively.There is cooling, decompression is stablized, refrigeration cycle efficiency is high, simple in structure, at low cost, service life is long, adaptivity is strong.
Description
Technical field
The utility model is related to a kind of restriction expansion devices for vapor-compression refrigerant cycle.
Background technology
Steam compression type refrigeration cycle in, restricting element play reducing pressure by regulating flow, cooling, adjusting refrigerant flow rate it is important
Effect.In high pressure ratio cycle or very wide the cycling of range of operation, the phenomenon that restricting element inner refrigerant is jammed, is commonplace, this
When, the flow-rate adjustment ability of restricting element declines, non-linear very strong, the thermodynamics consummating degree of Xun Huan is caused to decline, restriction loss
Rise, cooling, heating effect deteriorate, and Energy Efficiency Ratio reduces.The main reason for refrigerant is caused to be jammed is that occur in throttling passage
The velocity of sound face of flow is limited, puts off the position of velocity of sound face generation, helps to weaken the harmful effect that refrigerant flowing is jammed.
The content of the invention
The purpose of this utility model is that it is swollen to provide a kind of throttling for vapor-compression refrigerant cycle regarding to the issue above
Swollen device.
What the purpose of this utility model was realized in：A kind of restriction expansion device for vapor-compression refrigerant cycle,
Including refrigerant skirt, single-hole throttle screens, one-stage expansion pipe, perforated orifice plate, compound expansion pipe and collapsible tube；Refrigerant draws
Pipe, single-hole throttle screens, one-stage expansion pipe, perforated orifice plate, compound expansion pipe and collapsible tube are sequentially welded to connect successively.
The utility model, refrigerant skirt are the straight tube of 20 ~ 30mm of length；The thickness of single-hole throttle screens be 3 ~ 4mm, single hole
The single hole of choke block is laid in the center of single-hole throttle screens and is along the expansion of refrigerant flow direction, the taper that taper is 10 ~ 15 °
Hole, the point diameter of bellmouth are the 1/3 ~ 5/12 of single hole throttle board diameter；One-stage expansion pipe is 40 ~ 50mm of length, taper is
10 ~ 15 ° of conical pipe；The thickness of perforated orifice plate is 3 ~ 4mm, and each hole aperture of perforated orifice plate is consistent and each hole is in porous section
It uniformly arranges in flowing plate, each hole of perforated orifice plate is along the expansion of refrigerant flow direction, the fine taper that taper is 8 ~ 12 °
Hole；The conical pipe that compound expansion pipe is 20 ~ 30mm of length, taper is 15 ~ 20 °；Collapsible tube is the back taper of 50 ~ 60mm of length
Pipe, the outlet diameter of collapsible tube are consistent with the diameter of refrigerant skirt.
The utility model, refrigerant skirt, single-hole throttle screens, one-stage expansion pipe, perforated orifice plate, compound expansion pipe and receipts
The outer surface of the draw is laid with heat-preservation cotton.
The good effect of the utility model：
1）, two processes using a device completing to throttle, expand simultaneously, cooling, decompression are more reasonable；
2）, two processes using a device completing to throttle, expand simultaneously, effectively put off the hair in evaporation wave sound speed face
Raw position, the effect of being jammed for reducing refrigerant, extend the scope of refrigerant flow adjusting, improve refrigerant flow control
Precision, so as to reduce the restriction loss of refrigeration cycle, improve the efficiency of refrigeration cycle；
3）, due to not including movable part, simple in structure, easy processing while reliability is improved, is also reduced into
This, moreover, service life is long, adaptivity is strong.
The utility model has cooling, decompression is stable, refrigeration cycle efficiency is high, simple in structure, at low cost, service life
Long, the advantages that adaptivity is strong.
Example below combination attached drawing is further described the utility model.
Description of the drawings
Fig. 1 is the structure diagram of one embodiment of the utility model；
Fig. 2 is the structure diagram of the single-hole throttle screens of Fig. 1 embodiments；
Fig. 3 is the structure diagram of the perforated orifice plate of Fig. 1 embodiments.
In figure, 1, refrigerant skirt；2nd, single-hole throttle screens；3rd, one-stage expansion pipe；4th, perforated orifice plate；5th, compound expansion
Pipe；6th, collapsible tube；21st, bellmouth；41st, fine taper hole；A, refrigerant flow direction.
Specific embodiment
Referring to figs. 1 to Fig. 3, the present embodiment is a kind of restriction expansion device for vapor-compression refrigerant cycle, including system
Cryogen skirt 1, single-hole throttle screens 2, one-stage expansion pipe 3, perforated orifice plate 4, compound expansion pipe 5 and collapsible tube 6；Refrigerant draws
Pipe, single-hole throttle screens, one-stage expansion pipe, perforated orifice plate, compound expansion pipe and collapsible tube are sequentially welded to connect successively；Refrigerant
Skirt 1 is the straight tube of 20 ~ 30mm of length；The thickness of single-hole throttle screens 2 is 3 ~ 4mm, and the single hole of single-hole throttle screens is laid in single hole
The center of choke block and for along refrigerant flow direction A expand, the bellmouth 21 that taper is 10 ~ 15 °, the point diameter of bellmouth
For the 1/3 ~ 5/12 of single hole throttle board diameter；The conical pipe that one-stage expansion pipe 3 is 40 ~ 50mm of length, taper is 10 ~ 15 °；It is porous
The thickness of choke block 4 is 3 ~ 4mm, and each hole aperture of perforated orifice plate is consistent and each hole is uniformly arranged on perforated orifice plate, more
Each hole of hole choke block is along refrigerant flow direction A expansions, the fine taper hole 41 that taper is 8 ~ 12 °；Compound expansion pipe 5
For 20 ~ 30mm of length, the conical pipe that taper is 15 ~ 20 °；Collapsible tube 6 is the back taper pipe of 50 ~ 60mm of length, and collapsible tube goes out
Mouth diameter is consistent with the diameter of refrigerant skirt.
The operation principle of the utility model carrys out the refrigerant of condenser, refrigerant skirt 1 is flowed into, by single hole throttle
It completes to throttle for the first time during plate 2, part occurs and flash；Then into one-stage expansion pipe 3, occur directional expansion, pressure, temperature into
One step declines, the rise of refrigerant vapour content；Using perforated orifice plate 4, completed under the action of fine and closely woven fine taper hole 41
Second of throttling, pressure, the temperature of refrigerant reduce again, and the two-phase mainstream of refrigerant is formed in the downstream in fine taper hole 41
Area makes refrigerant evaporation liquid core be attached to mainstream area edge；Hereafter, refrigerant enters compound expansion pipe 5 and reexpands, and herein
Evaporation wave sound speed face is formed in compound expansion pipe；Finally, refrigerant is flowed out from collapsible tube 6, is prepared to enter into evaporator.
The utility model will throttle the evaporation wave sound speed face stabilization generated within compound expansion pipe 5 using expansion process,
Reduce the effect of being jammed of refrigerant；Meanwhile using the diffused aperture of bellmouth, reduce the vortex near choke block,
Reduce the dissipation loss that throttling generates.
The utility model, refrigerant do not limit its type.
Claims (3)
1. a kind of restriction expansion device for vapor-compression refrigerant cycle, it is characterised in that：Including refrigerant skirt（1）, it is single
Hole choke block（2）, one-stage expansion pipe（3）, perforated orifice plate（4）, compound expansion pipe（5）And collapsible tube（6）；The refrigerant draws
Pipe, single-hole throttle screens, one-stage expansion pipe, perforated orifice plate, compound expansion pipe and collapsible tube are sequentially welded to connect successively.
2. the restriction expansion device according to claim 1 for vapor-compression refrigerant cycle, it is characterised in that：
The refrigerant skirt（1）For the straight tube of 20 ~ 30mm of length；
The single-hole throttle screens（2）Thickness for 3 ~ 4mm, the single hole of single-hole throttle screens is laid in the center of single-hole throttle screens and is
Along refrigerant flow direction（A）Expand, the bellmouth that taper is 10 ~ 15 °（21）, the point diameter of bellmouth is single-hole throttle screens
The 1/3 ~ 5/12 of diameter；
The one-stage expansion pipe（3）For 40 ~ 50mm of length, the conical pipe that taper is 10 ~ 15 °；
The perforated orifice plate（4）Thickness for 3 ~ 4mm, each hole aperture of perforated orifice plate is consistent and each hole is in perforated orifice plate
Upper uniformly arrangement, each hole of perforated orifice plate is along refrigerant flow direction（A）Expand, the fine taper that taper is 8 ~ 12 °
Hole（41）；
The compound expansion pipe（5）For 20 ~ 30mm of length, the conical pipe that taper is 15 ~ 20 °；
The collapsible tube（6）For the back taper pipe of 50 ~ 60mm of length, the outlet diameter of the collapsible tube is straight with refrigerant skirt
Footpath is consistent.
3. the restriction expansion device according to claim 1 or 2 for vapor-compression refrigerant cycle, it is characterised in that：Institute
State refrigerant skirt（1）, single-hole throttle screens（2）, one-stage expansion pipe（3）, perforated orifice plate（4）, compound expansion pipe（5）And contraction
Pipe（6）Outer surface be laid with heat-preservation cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721466920.8U CN207379122U (en) | 2017-11-05 | 2017-11-05 | For the restriction expansion device of vapor-compression refrigerant cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721466920.8U CN207379122U (en) | 2017-11-05 | 2017-11-05 | For the restriction expansion device of vapor-compression refrigerant cycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207379122U true CN207379122U (en) | 2018-05-18 |
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ID=62334288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721466920.8U Active CN207379122U (en) | 2017-11-05 | 2017-11-05 | For the restriction expansion device of vapor-compression refrigerant cycle |
Country Status (1)
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| CN (1) | CN207379122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207430A (en) * | 2019-06-03 | 2019-09-06 | 珠海格力电器股份有限公司 | Supercooling device capable of improving supercooling degree and air conditioning unit |
-
2017
- 2017-11-05 CN CN201721466920.8U patent/CN207379122U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207430A (en) * | 2019-06-03 | 2019-09-06 | 珠海格力电器股份有限公司 | Supercooling device capable of improving supercooling degree and air conditioning unit |
| WO2020244205A1 (en) * | 2019-06-03 | 2020-12-10 | 珠海格力电器股份有限公司 | Supercooling device capable of improving supercooling degree and air-conditioning unit |
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