CN204388444U - Split-phase type refrigerant air-liquid knockout and refrigeration system - Google Patents
Split-phase type refrigerant air-liquid knockout and refrigeration system Download PDFInfo
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- CN204388444U CN204388444U CN201420842619.2U CN201420842619U CN204388444U CN 204388444 U CN204388444 U CN 204388444U CN 201420842619 U CN201420842619 U CN 201420842619U CN 204388444 U CN204388444 U CN 204388444U
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Abstract
The utility model discloses a kind of split-phase type refrigerant air-liquid knockout and refrigeration system, and each stream refrigerant flow is identical to provide one to ensure, can realize knockout and the refrigeration system of the mass dryness fraction feed flows such as evaporimeter.This knockout is made up of biphase gas and liquid flow feed pipe, ring seal pipeline, liquid header and branched phase-splitting branch road, and the outlet of biphase gas and liquid flow feed pipe is connected with the import of ring seal pipeline; Often prop up being connected with ring seal pipeline of liquid line in phase-splitting branch road and flue symmetry, liquid line is installed on the bottom of ring seal pipeline, and gas piping is installed on the top of ring seal pipeline; The liquid line bottom of often propping up phase-splitting branch road is connected with the import of liquid header, liquid header is connected with separating tube import, the liquid-inlet of the outlet blender of separating tube connects, the gas vent of flue is connected with the gas feed of blender, together supply each stream of evaporimeter, improve the heat exchange property of evaporimeter, improve performance of refrigerant systems.
Description
Technical field
The utility model relates to refrigeration technology field, in particular, relates to a kind of split-phase type gas-liquid knockout and refrigeration system.
Background technology
In refrigeration system, the evaporimeter of liquid provision through direct expansion, adopts the form of multithread road parallel connection usually, to reach best heat transfer effect, keeps best refrigerant flow rates, and pressure loss in piping is limited in certain scope.From expansion valve refrigerant air-liquid two phase flow out, be generally the flow pattern of bubble flow or Bolus-triggered technique, need two phase flow distributing equipment, gas-liquid two-phase cold-producing medium is fully mixed, then be assigned to equally in each stream.In refrigeration systems, usually cold-producing medium two phase flow distributing equipment is called liquid distributor or knockout.
Knockout should realize feed flow that is even to each stream of evaporimeter, equivalent, but in actual motion, often occurs gas-liquid mixed and enter the uneven phenomenon of each stream refrigerant flow.The difference of each stream liquid supply rate, affects the heat exchange property of evaporimeter, and then affects the service behaviour of whole refrigeration system.
First, the difference of liquid supply rate in each stream, can produce the different degrees of superheat in outlet.In the stream of liquid supply rate deficiency, cold-producing medium is rapidly evaporated to gas, and have very long one section of gas converting heat before outlet, heat exchange area is not utilized effectively, and produces the larger degree of superheat.At the stream that liquid supply rate is too much, outlet superheat degree is very little, even with unevaporated liquid.The outlet cold-producing medium of feed flow deficiency stream and overfeeding stream converges at collector, total effect is that heat exchange area does not make full use of, outlet superheat is spent little or with liquid, after the too small signal of the degree of superheat experienced by the temperature sensor of expansion valve, minor valve is closed in corresponding action, reduces liquid supply rate.After flow reduces, knockout separatory is more uneven, and form vicious circle, the effective heat exchange area of evaporimeter sharply reduces, and refrigerating capacity declines, and expansion valve and compressor efficiency reduce, whole refrigeration system runnability severe exacerbation.
Secondly, in food stuff refrigerated storage, when not increasing humidification apparatus, for reducing the drying loss of some cooled article, little temperature difference heat exchange must be realized.For realizing little temperature difference heat exchange, requiring that tube refrigerant has certain flow velocity on the one hand, meeting the requirements of the coefficient of heat transfer; Require the even frosting of evaporator surface, to keep the even of the coefficient of heat transfer on the other hand.Therefore, under any load condition, knockout all to the even the supply system cryogen of each stream of evaporimeter, should ensure that each stream refrigerant flow is identical.The knockout that allocation performance is good, can make evaporimeter uniform heat exchange, maintains less heat transfer temperature difference, and ensure food storage quality, the knockout that allocation performance is poor, causes the uneven frosting of evaporimeter usually, and heat transfer temperature difference increases, and causes chilled food drying loss.Visible, the knockout that performance is good, still can ensure effective utilization of evaporator heat exchange area when working conditions change, improves performance of refrigerant systems.The knockout of poor-performing, can not ensure even feed flow, causes evaporator heat exchange amount to reduce, expansion valve misoperation, in the freezer of high humility, the little temperature difference, also can cause uneven frosting, influential system performance and food storage quality.
There is the unequal technical problem of separatory in the knockout of conventional refrigeration, normally realize the even feed flow to each stream of evaporimeter by step-down speedup, speedup can realize the stirring of gas-liquid, and step-down can reduce the resistance difference of each stream of evaporimeter.But in variable working condition or when working in sub-load, the flow of system reduces, and the resistance of knockout reduces, and allocation performance declines and even loses distribution capability.So the knockout that necessary design and development is novel.
Utility model content
The purpose of this utility model is the technological deficiency for existing in prior art, and provide one can be the even the supply system cryogen of each stream of evaporimeter, ensure that each stream refrigerant flow is identical, allocation performance is good, can realize the knockout of the mass dryness fraction feed flows such as evaporimeter.
Another object of the present utility model is to provide a kind of heat exchange property that can improve evaporimeter, and then improves the refrigeration system of whole system service behaviour.
The technical scheme adopted for realizing the purpose of this utility model is:
A kind of split-phase type refrigerant air-liquid knockout, is made up of biphase gas and liquid flow feed pipe, ring seal pipeline, liquid header and branched phase-splitting branch road, often props up described phase-splitting branch road and comprise liquid line, flue, separating tube and blender; The outlet of described biphase gas and liquid flow feed pipe is connected with the import of described ring seal pipeline; Often prop up being connected with described ring seal pipeline of liquid line in described phase-splitting branch road and flue symmetry, often prop up liquid line in described phase-splitting branch road and flue with the described ring seal pipeline of junction for symmetry axis; Described liquid line is installed on the bottom of described ring seal pipeline, and described gas piping is installed on the top of described ring seal pipeline; The liquid line bottom of often propping up described phase-splitting branch road is connected with the import of described liquid header, described liquid header is connected with the separating tube import of often propping up described phase-splitting branch road respectively, the liquid-inlet often propping up the described blender of outlet of the separating tube of described phase-splitting branch road connects, and the gas vent of described flue is connected with the gas feed of described blender.
Described biphase gas and liquid flow feed pipe is connected by threeway with ring seal pipeline; Described ring seal pipeline adopts four-way to be connected with the liquid line often propped up in described phase-splitting branch road and flue respectively.
A kind of refrigeration system, comprise the compressor, condenser, expansion valve, knockout and the evaporimeter that connect to form closed circulation successively, described knockout is made up of biphase gas and liquid flow feed pipe, ring seal pipeline, liquid header and branched phase-splitting branch road, often props up described phase-splitting branch road and comprises liquid line, flue, separating tube and blender; The outlet of described biphase gas and liquid flow feed pipe is connected with the import of described ring seal pipeline; Often prop up being connected with described ring seal pipeline of liquid line in described phase-splitting branch road and flue symmetry, often prop up liquid line in described phase-splitting branch road and flue with the described ring seal pipeline of junction for symmetry axis; Described liquid line is installed on the bottom of described ring seal pipeline, and described gas piping is installed on the top of described ring seal pipeline; The liquid line bottom of often propping up described phase-splitting branch road is connected with the import of described liquid header, described liquid header is connected with the separating tube import of often propping up described phase-splitting branch road respectively, the liquid-inlet often propping up the described blender of outlet of the separating tube of described phase-splitting branch road connects, and the gas vent of described flue is connected with the gas feed of described blender; The outlet of described compressor is connected with the import of described condenser, and the outlet of described condenser is connected by the import of described expansion valve with the biphase gas and liquid flow feed pipe of described knockout; The gas-liquid mixture fluid outlet of often propping up the described blender in described phase-splitting branch road is connected with a certain stream import of described evaporimeter respectively, and the outlet of described evaporimeter is connected with the import of described compressor; The quantity of described separating tube is identical with the stream quantity of described evaporimeter.
Compared with prior art, the beneficial effects of the utility model are:
1, knockout of the present utility model makes gas-liquid two-phase be separated under reduction of speed with Action of Gravity Field, single-phase gas and liquid are respectively by after respective distributing pipe uniform distribution, converge before each stream of evaporimeter, together supply each stream of evaporimeter, the two phase flow of complexity is distributed and is converted into single-phase flow distribution, avoid gas phase to the interference of allocation performance, it can be the even the supply system cryogen of each stream of evaporimeter, ensure that each stream refrigerant flow is identical, allocation performance is good, the mass dryness fraction feed flows such as evaporimeter can be realized, improve the heat exchange property of evaporimeter, and then improve performance of refrigerant systems.
2, knockout pressure drop of the present utility model significantly reduces, and can improve evaporating pressure, improve performance of refrigerant systems.
3, knockout of the present utility model can according to the mass dryness fraction in the feed pipe of two phase flow, and automatically regulate the mass dryness fraction of each path inlet of evaporimeter, the cold-producing medium mass dryness fraction realizing each stream is equal with the mass dryness fraction of feed flow house steward, when variable working condition, still has good separatory effect.
4, in refrigeration system of the present utility model, because knockout can be the even the supply system cryogen of each stream of evaporimeter, ensure that each stream refrigerant flow is identical, improve the heat exchange property of evaporimeter, thus improve performance of refrigerant systems.
Accompanying drawing explanation
Figure 1 shows that the structural representation of the utility model split-phase type refrigerant air-liquid knockout.
Figure 2 shows that the schematic diagram of refrigeration system of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The schematic diagram of split-phase type refrigerant air-liquid knockout of the present utility model as shown in Figure 1, is made up of biphase gas and liquid flow feed pipe 1, ring seal pipeline 2, liquid header 7 and branched phase-splitting branch road.Often prop up described phase-splitting branch road and comprise liquid line 6, flue 5, separating tube 8 and blender 9, the outlet of described biphase gas and liquid flow feed pipe 1 is connected with the import of described ring seal pipeline 2.Often prop up being connected with described ring seal pipeline 2 of liquid line 6 in described phase-splitting branch road and flue 5 symmetry, often prop up liquid line 6 in described phase-splitting branch road and flue 5 with the described ring seal pipeline 2 of junction for symmetry axis.Described liquid line 6 is installed on the bottom of described ring seal pipeline 2, and described gas piping 5 is installed on the top of described ring seal pipeline 2.Liquid line 6 bottom of often propping up described phase-splitting branch road is connected with the import of described liquid header 7, described liquid header 7 is connected with separating tube 8 import of often propping up described phase-splitting branch road respectively, the liquid-inlet often propping up the described blender 7 of outlet of the separating tube 8 of described phase-splitting branch road connects, and the gas vent of described flue 5 is connected with the gas feed of described blender 7.
In the present embodiment, biphase gas and liquid flow feed pipe 1 is connected by threeway 3 with ring seal pipeline 2, and described ring seal pipeline 2 adopts four-way 4 to be connected with the liquid line 6 often propped up in described phase-splitting branch road and flue 5 respectively.
The schematic diagram of refrigeration system of the present utility model as shown in Figure 1, comprise the compressor 14, condenser 10, expansion valve 11, knockout 12 and the evaporimeter 13 that connect to form closed circulation successively, the structure of described knockout as shown in Figure 1, is made up of biphase gas and liquid flow feed pipe 1, ring seal pipeline 2, liquid header 7 and branched phase-splitting branch road.Often prop up described phase-splitting branch road and comprise liquid line 6, flue 5, separating tube 8 and blender 9, the outlet of described biphase gas and liquid flow feed pipe 1 is connected with the import of described ring seal pipeline 2.Often prop up being connected with described ring seal pipeline 2 of liquid line 6 in described phase-splitting branch road and flue 5 symmetry, often prop up liquid line 6 in described phase-splitting branch road and flue 5 with the described ring seal pipeline 2 of junction for symmetry axis.Described liquid line 6 is installed on the bottom of described ring seal pipeline 2, and described gas piping 5 is installed on the top of described ring seal pipeline 2.Liquid line 6 bottom of often propping up described phase-splitting branch road is connected with the import of described liquid header 7, described liquid header 7 is connected with separating tube 8 import of often propping up described phase-splitting branch road respectively, the liquid-inlet often propping up the described blender 7 of outlet of the separating tube 8 of described phase-splitting branch road connects, and the gas vent of described flue 5 is connected with the gas feed of described blender 7.The outlet of described compressor 14 is connected with the import of described condenser 10, the outlet of described condenser 10 is connected by the import of described expansion valve 11 with the biphase gas and liquid flow feed pipe 1 of described knockout 12, the gas-liquid mixture fluid outlet of often propping up the described blender 7 in described phase-splitting branch road is connected with a certain stream import of described evaporimeter 13 respectively, and the outlet of described evaporimeter 13 is connected with the import of described compressor 14; The quantity of described separating tube is identical with the stream quantity of described evaporimeter.
The gas refrigerant of the HTHP of being discharged by compressor 14 enters condenser 10 heat release, be condensed into the liquid refrigerant of temperature in high pressure, then the gas-liquid two-phase cold-producing medium of low-temp low-pressure is become after entering expansion valve 11 reducing pressure by regulating flow, gas-liquid two-phase cold-producing medium enters knockout 12, enter fluid well-distributing in ring seal pipeline 2 by biphase gas and liquid flow feed pipe 1 and be assigned to each phase-splitting branch road, in each phase-splitting branch road, in ring seal pipeline 2 and liquid line 6 and flue 5 intersection, under reduction of speed with Action of Gravity Field, gas-liquid two-phase is separated, single-phase gas enters in flue 5, the liquid of individual event enters in liquid line 6, in the liquid line of branched phase-splitting branch road, liquid enters in liquid header 7 and carries out Liquid distribution through separating tube 8 again.Liquid in the separating tube 8 often propping up phase-splitting branch road enters in blender 7, with the gas and vapor permeation entered by flue 5 in blender, more together supply each stream of evaporimeter, sweat cooling in evaporimeter, then refrigerant gas returns compressor, completes a kind of refrigeration cycle.Due to two phase refrigerant to each stream of evaporimeter etc. mass dryness fraction feed flow, improve the heat exchange property of evaporimeter, and then improve performance of refrigerant systems.Meanwhile, can according to the mass dryness fraction in the feed pipe of two phase flow, automatically regulate the mass dryness fraction of each path inlet of evaporimeter, the cold-producing medium mass dryness fraction realizing each stream is equal with the mass dryness fraction of feed flow house steward, when variable working condition, still has good separatory effect.
The above is only preferred embodiment of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a split-phase type refrigerant air-liquid knockout, is characterized in that, is made up of biphase gas and liquid flow feed pipe, ring seal pipeline, liquid header and branched phase-splitting branch road, often props up described phase-splitting branch road and comprises liquid line, flue, separating tube and blender; The outlet of described biphase gas and liquid flow feed pipe is connected with the import of described ring seal pipeline; Often prop up being connected with described ring seal pipeline of liquid line in described phase-splitting branch road and flue symmetry, often prop up liquid line in described phase-splitting branch road and flue with the described ring seal pipeline of junction for symmetry axis; Described liquid line is installed on the bottom of described ring seal pipeline, and described gas piping is installed on the top of described ring seal pipeline; The liquid line bottom of often propping up described phase-splitting branch road is connected with the import of described liquid header, described liquid header is connected with the separating tube import of often propping up described phase-splitting branch road respectively, the liquid-inlet often propping up the described blender of outlet of the separating tube of described phase-splitting branch road connects, and the gas vent of described flue is connected with the gas feed of described blender.
2. split-phase type refrigerant air-liquid knockout according to claim 1, is characterized in that, described biphase gas and liquid flow feed pipe is connected by threeway with ring seal pipeline; Described ring seal pipeline adopts four-way to be connected with the liquid line often propped up in described phase-splitting branch road and flue respectively.
3. one kind adopts the refrigeration system of split-phase type refrigerant air-liquid knockout described in claim 1, comprise the compressor, condenser, expansion valve, knockout and the evaporimeter that connect to form closed circulation successively, it is characterized in that, described knockout is made up of biphase gas and liquid flow feed pipe, ring seal pipeline, liquid header and branched phase-splitting branch road, often props up described phase-splitting branch road and comprises liquid line, flue, separating tube and blender; The outlet of described biphase gas and liquid flow feed pipe is connected with the import of described ring seal pipeline; Often prop up being connected with described ring seal pipeline of liquid line in described phase-splitting branch road and flue symmetry, often prop up liquid line in described phase-splitting branch road and flue with the described ring seal pipeline of junction for symmetry axis; Described liquid line is installed on the bottom of described ring seal pipeline, and described gas piping is installed on the top of described ring seal pipeline; The liquid line bottom of often propping up described phase-splitting branch road is connected with the import of described liquid header, described liquid header is connected with the separating tube import of often propping up described phase-splitting branch road respectively, the liquid-inlet often propping up the described blender of outlet of the separating tube of described phase-splitting branch road connects, and the gas vent of described flue is connected with the gas feed of described blender; The outlet of described compressor is connected with the import of described condenser, and the outlet of described condenser is connected by the import of described expansion valve with the biphase gas and liquid flow feed pipe of described knockout; The gas-liquid mixture fluid outlet of often propping up the described blender in described phase-splitting branch road is connected with a certain stream import of described evaporimeter respectively, and the outlet of described evaporimeter is connected with the import of described compressor; The quantity of described separating tube is identical with the stream quantity of described evaporimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420842619.2U CN204388444U (en) | 2014-12-29 | 2014-12-29 | Split-phase type refrigerant air-liquid knockout and refrigeration system |
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| CN201420842619.2U CN204388444U (en) | 2014-12-29 | 2014-12-29 | Split-phase type refrigerant air-liquid knockout and refrigeration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457056A (en) * | 2014-12-29 | 2015-03-25 | 天津商业大学 | Split-phase refrigerating fluid gas-liquid dispenser and refrigerating system |
| CN109269163A (en) * | 2018-10-24 | 2019-01-25 | 天津商业大学 | A kind of controllable dispenser of refrigeration system |
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2014
- 2014-12-29 CN CN201420842619.2U patent/CN204388444U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457056A (en) * | 2014-12-29 | 2015-03-25 | 天津商业大学 | Split-phase refrigerating fluid gas-liquid dispenser and refrigerating system |
| CN104457056B (en) * | 2014-12-29 | 2017-01-25 | 天津商业大学 | Split-phase refrigerating fluid gas-liquid dispenser and refrigerating system |
| CN109269163A (en) * | 2018-10-24 | 2019-01-25 | 天津商业大学 | A kind of controllable dispenser of refrigeration system |
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Effective date of registration: 20160621 Address after: 300000 Tianjin City West Road on the north side of East Nankai District mustard County Water Garden 9 Building 2 2402 Patentee after: Tianjin Dtop Science and Technology Co., Ltd. Address before: Tianjin highway 300134 East Tianjin District of Beichen City Patentee before: Tianjin University Of Commerce |