CN201281505Y - Single-body bidirectional restriction sleeve - Google Patents
Single-body bidirectional restriction sleeve Download PDFInfo
- Publication number
- CN201281505Y CN201281505Y CNU2008201004654U CN200820100465U CN201281505Y CN 201281505 Y CN201281505 Y CN 201281505Y CN U2008201004654 U CNU2008201004654 U CN U2008201004654U CN 200820100465 U CN200820100465 U CN 200820100465U CN 201281505 Y CN201281505 Y CN 201281505Y
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- inlet
- cold
- producing medium
- restriction sleeve
- check valve
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Abstract
The utility model relates to a single-body bidirectional throttling sleeve which is characterized in that the throttling sleeve is a single-body pipe, the flow section of an end inlet A of the throttling sleeve is larger than the flow section of an end inlet B of the throttling sleeve, wherein the inlet A is the inlet for a refrigerant during the refrigeration, and the inlet B is the inlet for a refrigerant during the heating. The utility model has the advantages of no check valve, production cost reduction, welded junction quantity decrease, the reduction of the hidden trouble of leakage and complete avoidance of vibration noise generated by the check valve.
Description
Technical field
The utility model relates to a kind of monomer-type two-way throttling short tube, especially carries out a kind of monomer-type two-way throttling short tube in the air-conditioning refrigeration system of cooling and warming operation.
Background technology
Refrigeration plant such as cooling and warming air conditioner for both device are carrying out cooling and warming when operation, and the chock pressure difference under two kinds of methods of operation requires different.The relation of at present mainly utilizing the capillary section drift angle to be directly proportional with length makes cold-producing medium flow through length difference capillaceous when cooling and warming moves and realizes.When design, adopt structure usually as Fig. 1.When refrigerating operaton, cold-producing medium is held the E end outflow that enters through direct process check valve 2 after capillary 1 throttling from the A of capillary 1.When heating operation, cold-producing medium enters from the E end of check valve 2, and because of the blocking effect of check valve 2, cold-producing medium enters through the D of capillary 3 end, through arriving the C end after 3 throttlings of capillary, flows out through the A end from it behind capillary 1 second throttle again.The subject matter that adopts this structure to exist is to have increased check valve in throttle system, has not only increased material cost, has also increased the possibility that weld bond leakage and check valve produce noise.
The utility model content
The purpose of this utility model provides a kind of monomer-type two-way throttling short tube that does not have check valve, replaces traditional capillary-compensated that is used for cooling and warming or short-tube restrictor structure.No matter refrigeration system is when cooling and warming moves, and all adopts same monomer short tube to carry out throttling, with the purpose that reaches simplified structure, reduces cost.
For achieving the above object, the utility model is to realize like this, it is a kind of single two-way throttling short tube, be characterised in that: restriction sleeve is the monomer pipe, the actual internal area of one end entrance A is greater than the actual internal area of other end inlet B, the A that wherein enters the mouth is the inlet port of when refrigeration cold-producing medium, and inlet B is the inlet port of cold-producing medium when heating.
The inlet A of described restriction sleeve is tubaeform mouthful, and its inlet B also is tubaeform mouthful.
The utility model has following advantage compared with prior art:
(1) no check valve reduces production costs;
(2) reduce weld bond, reduce and leak hidden danger;
(3) vibration noise of avoiding check valve to produce fully.
Description of drawings
Fig. 1 is the prior art constructions schematic diagram;
Fig. 2 is a structural representation of the present utility model.
Specific embodiments
Because cold-producing medium its flow resistance in throttling process is directly proportional with flow velocity, and flow velocity to the influence of resistance much larger than the influence of length to resistance, therefore can utilize this characteristic, change its chock pressure difference by changing the flow velocity of refrigeration system cold-producing medium when the cooling and warming, to satisfy the different chock pressure difference requirements of refrigeration system in the cooling and warming operation.Below in conjunction with drawings and Examples the utility model is done further detailed description:
As shown in Figure 1, it is a kind of single two-way throttling short tube, characteristics of the present utility model are: restriction sleeve 1 is the monomer pipe, the actual internal area of one end entrance A is greater than the actual internal area of other end inlet B, the A that wherein enters the mouth is the inlet port of when refrigeration cold-producing medium, and inlet B is the inlet port of cold-producing medium when heating.In the present embodiment, the inlet A of restriction sleeve 1 is tubaeform mouthful, and its inlet B also is tubaeform mouthful.
During use, cold-producing medium is in the capillary-compensated process, and cold-producing medium gradually becomes gas-liquid two-phase by liquid phase, and more in the rear end, the ratio of gas (also being mass dryness fraction) is big more, and flow velocity is high more, and choke pressure descends fast more.When refrigeration system when carrying out refrigerating operaton, cold-producing medium flows into from the big inlet A of actual internal area because inlet A actual internal area is big, cold-producing medium is in liquid phase and less mass dryness fraction state in it flows, flow velocity is less, choke pressure descends slowly.When cold-producing medium continued to enter interlude and carry out throttling with less flow velocity, its choke pressure descended still relatively slow.In the time of near cold-producing medium continues to enter inlet B end, congestion phenomenon appears in cold-producing medium, and descend entered the mouth physical dimension and the actual internal area of B of its pressure influences lessly, so the overall decline of cold-producing medium its choke pressure when carrying out refrigerating operaton is less.When refrigeration system when carrying out heating operation, cold-producing medium flows into from the little inlet B of actual internal area, because inlet B actual internal area is little, cold-producing medium flow velocity within it is bigger, and choke pressure descends bigger, when making cold-producing medium carry out throttling to enter interlude than big mass dryness fraction, because the increase of cold-producing medium mass dryness fraction, cause the increase of flow velocity, therefore descend fast, make that the overall decline of cold-producing medium its choke pressure when carrying out heating operation is bigger at its choke pressure of interlude.Therefore the different chock pressure difference requirements of refrigeration system have been satisfied in the cooling and warming operation.
Because refrigerating capacity, the heating capacity of its generation of refrigeration system of different sizes vary in size, for adapting to this needs, can realize in the following way: to refrigerating capacity, refrigeration system that heating capacity is bigger, refrigerant flow increases, mean flow rate in short tube increases, circulation area is aggravated the influence of throttle resistance, therefore can be by increasing the aperture of restriction sleeve interlude, and the ratio of dwindling the opening size of inlet A and inlet B realizes.To refrigerating capacity, the less refrigeration system of heating capacity, refrigerant flow reduces, and the mean flow rate in short tube descends, and circulation area reduces the influence of throttle resistance, therefore can be by reducing the aperture of restriction sleeve interlude, the ratio that increases inlet A and inlet B opening size realizes.
For further reducing cost, can directly restriction sleeve be placed in the high-pressure system of refrigeration system and the cold-producing medium circulating line or parts between the low-pressure system, also can on parts such as stop valve, process above-mentioned short tube internal structure shape, play the bidirectional throttle effect.
Claims (2)
1, a kind of single two-way throttling short tube, it is characterized in that: restriction sleeve (1) is the monomer pipe, the actual internal area of one end entrance A is greater than the actual internal area of other end inlet B, and the inlet port of the A that wherein enters the mouth cold-producing medium during for refrigeration, inlet B are the inlet port of cold-producing medium when heating.
2, single two-way throttling short tube according to claim 1 is characterized in that: the inlet A of described restriction sleeve (1) is tubaeform mouthful or other shape, and its inlet B also is tubaeform mouthful or other shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201004654U CN201281505Y (en) | 2008-10-21 | 2008-10-21 | Single-body bidirectional restriction sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201004654U CN201281505Y (en) | 2008-10-21 | 2008-10-21 | Single-body bidirectional restriction sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201281505Y true CN201281505Y (en) | 2009-07-29 |
Family
ID=40928379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201004654U Expired - Fee Related CN201281505Y (en) | 2008-10-21 | 2008-10-21 | Single-body bidirectional restriction sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201281505Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846421A (en) * | 2010-05-24 | 2010-09-29 | 广东增城市基业汽车空调有限公司 | Throttling reflection tube for air conditioner condenser |
| CN103216979A (en) * | 2013-03-21 | 2013-07-24 | 顺德职业技术学院 | Reducing two-way throttling short tube |
| CN105423659A (en) * | 2016-01-11 | 2016-03-23 | 华南理工大学 | Serial two-way throttling stub pipe mechanism and throttling method thereof |
-
2008
- 2008-10-21 CN CNU2008201004654U patent/CN201281505Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846421A (en) * | 2010-05-24 | 2010-09-29 | 广东增城市基业汽车空调有限公司 | Throttling reflection tube for air conditioner condenser |
| CN103216979A (en) * | 2013-03-21 | 2013-07-24 | 顺德职业技术学院 | Reducing two-way throttling short tube |
| CN105423659A (en) * | 2016-01-11 | 2016-03-23 | 华南理工大学 | Serial two-way throttling stub pipe mechanism and throttling method thereof |
| CN105423659B (en) * | 2016-01-11 | 2018-01-16 | 华南理工大学 | A kind of method for the pressure drop requirements and traffic requirement for realizing refrigeration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20131021 |