CN101684975A - Single two-way throttling capillary tube - Google Patents
Single two-way throttling capillary tube Download PDFInfo
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- CN101684975A CN101684975A CN200810232927A CN200810232927A CN101684975A CN 101684975 A CN101684975 A CN 101684975A CN 200810232927 A CN200810232927 A CN 200810232927A CN 200810232927 A CN200810232927 A CN 200810232927A CN 101684975 A CN101684975 A CN 101684975A
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- capillary tube
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Abstract
The invention relates to a single two-way throttling capillary tube, which is characterized in that: the capillary tube comprises more than two capillary tubes with different tube inner diameters; twoadjacent capillary tubes are mutually communicated to form a single capillary tube; a refrigerant enters from an inlet A with low resistance when a refrigeration system refrigerates; and the refrigerant enters from an inlet C with high resistance during heating. The single two-way throttling capillary tube has the advantages of avoiding the use of a one-way valve, reducing production cost, reducing welded junctions, reducing hidden danger of leakage and completely avoiding vibration noise generated by the one-way valve.
Description
Technical field
The present invention relates to a kind of monomer-type two-way throttling capillary tube, especially carry out a kind of monomer-type two-way throttling capillary 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, when carrying out the cooling and warming operation, 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 behind the capillary-compensated 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 capillary 1 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.
Summary of the invention
The purpose of this invention is to provide a kind of monomer-type two-way throttling capillary tube that does not have check valve, no matter refrigeration system is when cooling and warming moves, and all adopts same capillary to carry out throttling, with the purpose that reaches simplified structure, reduces cost.
In order to achieve the above object, the present invention realizes like this, it is a kind of single two-way throttling capillary tube, it is characterized in that: the capillary that comprises different bores more than two sections, adjacent two capillaries interconnect and constitute the monomer capillary, cold-producing medium enters from the little inlet A end of resistance during the refrigeration system refrigeration, and cold-producing medium enters from the big inlet C end of resistance when heating.
It comprises the capillary of three sections different bores, adjacent two capillaries interconnect and constitute the monomer capillary, wherein interlude bore capillaceous is less than both sides bore capillaceous, and both sides length capillaceous is inequality, the inlet of the long inlet A capillaceous of length cold-producing medium during for refrigeration, the short inlet D capillaceous of length are the inlet of cold-producing medium when heating.
The present invention 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 the structural representation of the embodiment of the invention one;
Fig. 3 is the structural representation of the embodiment of the invention two.
The specific embodiment
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 present invention is further described:
Embodiment one:
As shown in Figure 2, it is a kind of single two-way throttling capillary tube, characteristics of the present invention are: the capillary 4,5 that comprises two sections different bores, two capillaries interconnect, the inlet A of the capillary 4 that bore is big is the inlet of when refrigeration cold-producing medium, and the inlet C of the capillary 5 that bore is little is the inlet of cold-producing medium when heating.Also can be the capillary of different bores more than two sections, adjacent two capillaries interconnect and constitute the monomer capillary, and cold-producing medium enters from the little inlet A end of resistance during the refrigeration system refrigeration, and cold-producing medium enters from the big inlet C end of resistance when heating.
During use, single two-way throttling capillary tube is made up of bore bigger capillary 4 and the less capillary 5 of bore.When refrigeration system was carried out refrigerating operaton, cold-producing medium entered from the A end of capillary 4.When refrigeration system was carried out heating operation, cold-producing medium entered from the C end of capillary 5.Its work cardinal principle is as follows: 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 was carried out refrigerating operaton, the bore of capillary 4 was bigger, and cold-producing medium is in liquid phase and less mass dryness fraction state in it flows, and flow velocity is less, and choke pressure descends slowly.Cold-producing medium continues to carry out throttling in capillary 5, because the bore of capillary 5 is less, and the cold-producing medium mass dryness fraction makes that in continuous increase choke pressure begins to quicken to descend, and reaches the refrigeration work requirement.When refrigeration system is carried out heating operation, cold-producing medium is because the bore of capillary 5 is less, choke pressure descends very fast, make cold-producing medium enter capillary 4 simultaneously and continue throttling with bigger mass dryness fraction, though this moment, the bore of capillary 4 increased, but the cold-producing medium mass dryness fraction cause change in flow much larger than the influence that bore increases, it is still very fast to make that choke pressure descends, and finally reaches to heat job requirement.
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, increase at each section mean flow rate capillaceous, circulation area is to the influence of throttle resistance aggravation, can by reduce both bores of capillary 4 and capillary 5 than or length ratio realize.To refrigerating capacity, the less refrigeration system of heating capacity, refrigerant flow reduces, mean flow rate in each section capillary descends, and circulation area reduces the influence of throttle resistance, can by increase both bores of capillary 4 and capillary 5 than or length ratio realize.
Consider from technique for applying, also the pipeline components such as filter in the refrigeration system refrigerant circulation line can be placed on the tie point B place of capillary 4 and capillary 5, the B end of one end and capillary 4 joins, and the B end of the other end and capillary 5 joins, and constitutes to be communicated with.
Embodiment two:
As shown in Figure 3, the characteristics of its a kind of single two-way throttling capillary tube are: the capillary 6,7,8 that comprises three sections different bores, adjacent two capillaries interconnect and constitute the monomer capillary, wherein the bore of interlude capillary 7 is less than the bore of diamond wool tubule 6,8, and the length of diamond wool tubule 6,8 is inequality.The inlet of the inlet A of the capillary 6 that length is long cold-producing medium during for refrigeration, the inlet D of the capillary 8 that length is short are the inlet of cold-producing medium when heating.
During use, when carrying out refrigerating operaton, cold-producing medium enters from the inlet A end of the long capillary 6 of length, because of being in liquid phase and less mass dryness fraction state at this section cold-producing medium, flow velocity is lower, and choke pressure descends slower, after 7 throttlings of interlude capillary, the cold-producing medium mass dryness fraction increases, flow velocity is accelerated, and enter the short capillary of length and continue throttling for 8 sections, but therefore segment length is shorter, choke pressure is overall to descend seldom, the requirement of final satisfied refrigeration chock pressure difference.And when carrying out heating operation, cold-producing medium enters from the inlet D end of the short capillary 8 of length, and because of be in liquid phase and less mass dryness fraction state at this section cold-producing medium, flow velocity is lower, choke pressure descends slower, after 7 throttlings of interlude capillary, the cold-producing medium mass dryness fraction increases, and flow velocity is accelerated, enter the long capillary of length 6 and continue throttling, therefore segment length is longer, and choke pressure totally descends more, the final satisfied chock pressure difference requirement that heats.
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, increase at each section mean flow rate capillaceous, circulation area is to the influence of throttle resistance aggravation, therefore can be by increasing the bore of capillary 7, and dwindle both length ratios of capillary 6 and capillary 8 and realize.To refrigerating capacity, the less refrigeration system of heating capacity, refrigerant flow reduces, and the mean flow rate in each section capillary descends, and circulation area reduces the influence of throttle resistance, therefore can be by reducing the bore of capillary 7, increase both length ratios of capillary 6 and capillary 8 and realize.
Claims (2)
1, a kind of single two-way throttling capillary tube, it is characterized in that: the capillary that comprises different bores more than two sections, adjacent two capillaries interconnect and constitute the monomer capillary, cold-producing medium enters from the little inlet A end of resistance during the refrigeration system refrigeration, and cold-producing medium enters from the big inlet C end of resistance when heating.
2, a kind of single two-way throttling capillary tube according to claim 1, it is characterized in that: the capillary that comprises three sections different bores, adjacent two capillaries interconnect and constitute the monomer capillary, wherein interlude bore capillaceous is less than both sides bore capillaceous, and both sides length capillaceous is inequality, the inlet of the long inlet A capillaceous of length cold-producing medium during for refrigeration, the short inlet D capillaceous of length are the inlet of cold-producing medium when heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232927A CN101684975A (en) | 2008-10-21 | 2008-10-21 | Single two-way throttling capillary tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810232927A CN101684975A (en) | 2008-10-21 | 2008-10-21 | Single two-way throttling capillary tube |
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| CN101684975A true CN101684975A (en) | 2010-03-31 |
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| CN200810232927A Pending CN101684975A (en) | 2008-10-21 | 2008-10-21 | Single two-way throttling capillary tube |
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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 |
| CN102087061A (en) * | 2011-01-06 | 2011-06-08 | 黎澄光 | Air conditioner for cooling and warming by sharing same capillary tube |
| CN103216979A (en) * | 2013-03-21 | 2013-07-24 | 顺德职业技术学院 | Reducing two-way throttling short tube |
| CN103629869A (en) * | 2012-08-23 | 2014-03-12 | 珠海格力电器股份有限公司 | Flow regulating device of pipeline, air conditioner pipeline system comprising same and air conditioner |
-
2008
- 2008-10-21 CN CN200810232927A patent/CN101684975A/en active Pending
Cited By (5)
| 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 |
| CN102087061A (en) * | 2011-01-06 | 2011-06-08 | 黎澄光 | Air conditioner for cooling and warming by sharing same capillary tube |
| CN103629869A (en) * | 2012-08-23 | 2014-03-12 | 珠海格力电器股份有限公司 | Flow regulating device of pipeline, air conditioner pipeline system comprising same and air conditioner |
| CN103629869B (en) * | 2012-08-23 | 2016-04-20 | 珠海格力电器股份有限公司 | Flow regulating device of pipeline, air conditioner pipeline system comprising same and air conditioner |
| CN103216979A (en) * | 2013-03-21 | 2013-07-24 | 顺德职业技术学院 | Reducing two-way throttling short tube |
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Open date: 20100331 |