CN104776641B - Two-tube-pass dry evaporator and refrigeration plant - Google Patents
Two-tube-pass dry evaporator and refrigeration plant Download PDFInfo
- Publication number
- CN104776641B CN104776641B CN201410013520.6A CN201410013520A CN104776641B CN 104776641 B CN104776641 B CN 104776641B CN 201410013520 A CN201410013520 A CN 201410013520A CN 104776641 B CN104776641 B CN 104776641B
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- tube
- radiating tube
- backhaul
- capillary
- refrigerating medium
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
- F25B2339/024—Evaporators with refrigerant in a vessel in which is situated a heat exchanger
- F25B2339/0242—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of two-tube-pass dry evaporator and refrigeration plant.Two-tube-pass dry evaporator, including shell, refrigerating medium import, refrigerating medium outlet, refrigerant inlet and refrigerant outlet are provided with shell, many radiating tube assemblies are additionally provided with shell, radiating tube assembly includes process radiating tube, backhaul radiating tube and capillary, process radiating tube connects and composes U-shape structure by capillary and backhaul radiating tube, and process radiating tube is tightly connected with refrigerant inlet, and backhaul radiating tube is tightly connected with refrigerant outlet.Process radiating tube and backhaul radiating tube are linked together by using capillary, because capillary can easily be bent, in that context it may be convenient to which heat exchanger tube is carried out into U-shaped connection, effectively reduces the difficulty of processing of radiating tube assembly；Under the throttling action of capillary, point liquid caused when solving the problems, such as that refrigerant air-liquid is separated is uneven, improves the heat exchange efficiency of evaporator.
Description
Technical field
The present invention relates to refrigerating plant, more particularly to a kind of two-tube-pass dry evaporator and refrigeration plant.
Background technology
At present, the shell and tube evaporator in cooling cycle system is divided into full-liquid type, does according to the difference of its feed liquid way
Formula, circulating and fountain etc..Wherein dry evaporator is the steaming that a kind of refrigerant liquid carries out boiling heat transfer in heat-transfer pipe
Hair device, the cooled medium in its heat-transfer pipe outside is refrigerating medium.Dry evaporator is easy to the crowds such as system oil return because of its compact conformation
Many advantages and be widely used in refrigeration system.Dry evaporator of the prior art generally includes straight pipe type and U-tube formula, two
Many heat exchanger tubes are equipped with the shell for planting evaporator.But because there is gas-liquid in straight pipe type heat exchanger tube end pipe beam position height difference
It is uneven that segregation phenomenon distributes refrigerant, so that the refrigerant in various heat exchange pipe can not sufficiently be exchanged heat.And U-tube
Formula heat exchange pipe end is generally bent into U-shaped structure, to connect exchange heat up and down tube side, in practical operation manufacturing process, U-shaped structure
Heat exchange tube machining technique it is complicated, difficulty of processing is larger.Therefore, dry evaporator difficulty of processing of the prior art is larger and changes
The thermal efficiency is relatively low.
The content of the invention
The technical problems to be solved by the invention are：A kind of two-tube-pass dry evaporator and refrigeration plant are provided, are solved existing
There is the U-tube difficulty of processing of dry evaporator in technology larger and the relatively low defect of heat exchange efficiency, realize reducing two-tube-pass dry type
The difficulty of processing of evaporator, and improve the heat exchange efficiency of two-tube-pass dry evaporator.
The technical scheme that the present invention is provided is that a kind of two-tube-pass dry evaporator, including shell is provided with the shell
Refrigerating medium import, refrigerating medium outlet, refrigerant inlet and refrigerant outlet, are additionally provided with many radiating tube groups in the shell
Part, the radiating tube assembly includes process radiating tube, backhaul radiating tube and capillary, and the process radiating tube is by the capillary
Pipe connects and composes U-shape structure with the backhaul radiating tube, and the process radiating tube is tightly connected with the refrigerant inlet, described
Backhaul radiating tube is tightly connected with the refrigerant outlet.
Two-tube-pass dry evaporator as described above, the pipe of the caliber less than the backhaul radiating tube of the process radiating tube
Footpath.
Two-tube-pass dry evaporator as described above, the capillary is change caliber structure, with the process radiating tube phase
The caliber of the capillary of connection is less than the caliber that the capillary being connected with the backhaul radiating tube is connected.
Two-tube-pass dry evaporator as described above, is cone mouth structure at the two-port of the capillary.
Two-tube-pass dry evaporator as described above, the shell includes cylinder, the first capping and the second capping, described the
One lidstock is fixed on the Single port of the cylinder, and second lidstock is fixed on the another port of the cylinder, institute
State and the refrigerating medium import and refrigerating medium outlet are provided with the side wall of cylinder, the system is provided with first capping
Cryogen import and the refrigerant outlet, the capillary are located at the side of the described second capping.
Two-tube-pass dry evaporator as described above, sealing is provided with tube sheet, the tube sheet and institute in first capping
State and formed between the first capping confined space, a point journey baffle plate, described point are additionally provided between the tube sheet and first capping
The confined space is divided into the independent process space and backhaul space by journey baffle plate, and the tube sheet offers multiple process connections
Hole and multiple backhaul connecting holes；The process connecting hole and the refrigerant inlet are connected with the process space respectively, described
Backhaul connecting hole and the refrigerant outlet are connected with the backhaul space respectively；The process radiating tube is sealedly connected on described
In process connecting hole, the backhaul radiating tube is sealedly connected in the backhaul connecting hole.
Two-tube-pass dry evaporator as described above, the refrigerating medium import is near the described first capping, the refrigerating medium
Outlet is near the described second capping.
Two-tube-pass dry evaporator as described above, is located at the refrigerating medium import and the refrigerating medium goes out in the cylinder
Refrigerating medium space between mouthful is additionally provided with multi-disc dividing plate.
Two-tube-pass dry evaporator as described above, the two neighboring dividing plate is staggered, and two neighboring described
Dividing plate has overlay region along the axis direction of the cylinder.
A kind of refrigeration plant, including above-mentioned two-tube-pass dry evaporator.
Two-tube-pass dry evaporator and refrigeration plant that the present invention is provided, by using capillary is by process radiating tube and returns
Journey radiating tube links together, because capillary can easily be bent, such that it is able to heat exchanger tube easily is carried out into U-shaped company
Connect, effectively reduce the difficulty of processing of radiating tube assembly；Meanwhile, under the throttling action of capillary, solve refrigerant air-liquid
The problem of point liquid inequality caused during separation, it can be ensured that the radiating tube assembly of various location is obtained in that the refrigeration measured
Agent so that refrigerant can be evenly distributed, refrigerant can be hot gas along the length direction evaporating completely of radiating tube assembly
Body, improves the heat exchange efficiency of evaporator.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of two-tube-pass dry evaporator embodiment of the present invention；
Fig. 2 is the structural representation of the first capping in two-tube-pass dry evaporator embodiment of the present invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As Figure 1-Figure 2, the present embodiment two-tube-pass dry evaporator, including shell 1, refrigerating medium is provided with shell 1
Import 101, refrigerating medium outlet 102, refrigerant inlet 103 and refrigerant outlet 104, many radiating tubes are additionally provided with shell 1
Component（It is not shown）, radiating tube assembly include process radiating tube 21, backhaul radiating tube 22 and capillary 23, process radiating tube 21 lead to
Cross capillary 23 and connect and compose U-shape structure with backhaul radiating tube 22, process radiating tube 21 is tightly connected with refrigerant inlet 103,
Backhaul radiating tube 22 is tightly connected with refrigerant outlet 104.
Specifically, the radiating tube of many single u-shaped structures is provided with the shell 1 in the present embodiment two-tube-pass dry evaporator
Component, radiating tube assembly includes process radiating tube 21, backhaul radiating tube 22 and capillary 23, and process is radiated by capillary 23
Pipe 21 and backhaul radiating tube 22 link together, and process heat exchanger tube 21 and backhaul can be exchanged heat by bending capillary 23
Pipe 22 carries out U-shaped connection, because capillary 23 is easier to make for bending machining, such that it is able to effectively reduce radiating tube assembly
Difficulty of processing.Refrigerant is entered into process radiating tube 21 from refrigerant inlet 103, and it is scattered to enter into backhaul via capillary 23
In heat pipe 22, capillary 23 can play a part of throttling to refrigerant, so that it is guaranteed that the backhaul radiating tube 22 of various location
Refrigerant can uniformly be distributed, it is to avoid cause the refrigerant in different backhaul radiating tubes 22 to distribute not because refrigerant air-liquid is separated
Equal phenomenon occurs so that refrigerant is evenly distributed.Refrigerant flows successively through process radiating tube 21, capillary 23 and backhaul radiating
Pipe 22, can evaporating completely be overheated gas, effectively to improve the heat exchange efficiency of the present embodiment two-tube-pass dry evaporator.
During use, refrigerating medium will be entered into the housing of shell 1 by refrigerating medium import 101, and refrigerating medium enters with radiating tube assembly
To be exported from refrigerating medium outlet 102 after row heat exchange.Capillary 23 and process radiating tube 21 and backhaul radiating tube for convenience
22 are firmly fixed connection, and the both ends of capillary 23 are cone mouth structure.Specifically, being set by by the end of capillary 23
It is the cone mouth structure shunk so that capillary 23 readily can be connected to process radiating tube 21 and backhaul radiating tube 22 by socket joint
In, and the heat conductivility good in order to ensure capillary 23, it is preferred that capillary 23 is made from copper material.
Wherein, caliber of the caliber of process radiating tube 21 less than backhaul radiating tube 22.Specifically, in order to meet radiating tube group
The need for part inner refrigerant damp steam specific volume gradually increases, the pipe by the caliber of backhaul radiating tube 22 relative to process radiating tube 21
Footpath sets larger, and the refrigerant in process radiating tube 21 after being entered into backhaul radiating tube 22 by capillary 23, make by part
Cryogen is changed into gaseous state, and can be good at meeting what refrigerant damp steam specific volume gradually increased compared with the backhaul radiating tube 22 of Large Diameter Pipeline
Need.Preferably, capillary 23 for become caliber structure, the caliber of capillary 23 being connected with the mouth of pipe of process heat exchanger tube 21 be less than with
The caliber of capillary 23 that the mouth of pipe of backhaul heat exchanger tube 22 is connected.
In addition, the shell 1 in the present embodiment includes the capping 13 of the capping of cylinder 11, first 12 and second, the first capping 12 is close
Sealing is scheduled on the Single port of cylinder 11, and the sealing of the second capping 13 is fixed on the another port of cylinder 11, is set on the side wall of cylinder 11
Refrigerating medium import 101 and refrigerating medium outlet 102 are equipped with, refrigerant inlet 103 and refrigerant outlet are provided with the first capping 12
104, capillary 23 is located at the side of the second capping 13.Specifically, can be sealed up by the first capping 12 and the second capping 13
Two ports of cylinder 11, first capping 12 on be provided with refrigerant inlet 103 and refrigerant outlet 104, in order to radiating
Tube assembly is connected, and the outsides that the second capping 13 is enclosed in capillary 23, in order to hold the part of the bending of capillary 23, and the
One capping 12 and the second capping 13 may be configured as semiglobe.And process radiating tube 21 and backhaul radiating tube 22 pairs for convenience
That answers is connected with refrigerant inlet 103 and refrigerant outlet 104, and sealing is provided with tube sheet 14 in the first capping 12, tube sheet 14 with
Confined space is formed between first capping 12, a point journey baffle plate 15 is additionally provided between the capping of tube sheet 14 and first 12, point journey baffle plate
Confined space is divided into the independent process space 121 and backhaul space 122 by 15, and tube sheet 14 offers multiple process connecting holes
141 and multiple backhaul connecting holes 142；Process connecting hole 141 and refrigerant inlet 103 are connected with the process space 121 respectively, backhaul
Connecting hole 142 and refrigerant outlet 104 are connected with backhaul space 122 respectively；Process radiating tube 21 is sealedly connected on process connection
In hole 141, backhaul radiating tube 22 is sealedly connected in backhaul connecting hole 142.Specifically, by dividing journey baffle plate 15 by the He of tube sheet 14
The confined space that first capping 12 is formed is separated into the process space 121 and backhaul space 122, many process radiating tubes 21 and backhaul
Radiating tube 22 can be connected by tube sheet 14 with corresponding with the process space 121 and backhaul space 122, be more beneficial for refrigerant is defeated
It is sent in process radiating tube 21, is also convenient for carrying out the refrigerant in many backhaul radiating tubes 22 to unify to reclaim.
Further, the heat exchange efficiency of middle refrigerating medium in the housing of shell 1, the present embodiment are entered into more effectively improve
In refrigerating medium import 101 near first capping 12, refrigerating medium outlet 102 near second capping 13.Specifically, refrigerating medium import
101 and refrigerating medium outlet 102 separate positioned at cylinder 11 both ends, can effectively increase flowing of the refrigerating medium in shell 1
Path length, to ensure that refrigerating medium can carry out sufficient heat exchange.Meanwhile, it is close to the first envelope by by refrigerating medium import 101
Lid 12 so that refrigerating medium just directly carries out hot friendship after can entering into shell 1 with the refrigerant for having just enter into process radiating tube 21
Change, effectively to improve the efficiency of heat exchange.Preferably, in order to increase the flow path of refrigerating medium and the flow velocity of cross-flow tube bank,
To strengthen the heat transfer effect of refrigerating medium, in cylinder 11 be located at refrigerating medium import 101 and refrigerating medium outlet 102 between be additionally provided with it is many
Piece dividing plate 3, and process radiating tube 21 and backhaul radiating tube 22 can be inserted in correspondence dividing plate 3.Specifically, refrigerating medium passes through refrigerating
Agent import 101 is entered into when being flowed in shell 1, and refrigerating medium will be stopped by dividing plate 3, slow down the speed of refrigerating medium outflow.And every
Plate 3 can be soldered in cylinder 11 and is staggered perpendicular to the axis of cylinder 11, also, two neighboring dividing plate 3, and adjacent
Two dividing plates 3 have overlay region along the axis direction of cylinder 11, and refrigerating medium is blocked in shell by the dividing plate 3 being staggered
Flowed with " S " type path in 1, so that effectively increase the flow velocity of the flow path with cross-flow tube bank of refrigerating medium, to strengthen refrigerating
The heat transfer effect of agent.
, be connected to for process radiating tube and backhaul radiating tube by using capillary by the present embodiment two-tube-pass dry evaporator
Together, because capillary can easily be bent, such that it is able to heat exchanger tube easily is carried out into U-shaped connection, effectively reduce
The difficulty of processing of the tube assembly that radiates；Meanwhile, under the throttling action of capillary, solve refrigerant air-liquid separate when cause point
The uneven problem of liquid, it can be ensured that the radiating tube assembly of various location is obtained in that the refrigerant measured so that refrigerant energy
Enough evenly distributed, refrigerant can be overheated gas along the length direction evaporating completely of radiating tube assembly, improve evaporator
Heat exchange efficiency.
The present invention also provides a kind of refrigeration plant, including above-mentioned two-tube-pass dry evaporator.
Specifically, the two-tube-pass dry evaporator in the present embodiment refrigeration plant can use two-tube-pass dry type of the present invention
Two-tube-pass dry evaporator in evaporator embodiment, its concrete structure may refer to two-tube-pass dry evaporator of the present invention to be implemented
The record of example and accompanying drawing 1- Fig. 2, will not be repeated here.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a kind of two-tube-pass dry evaporator, including shell, is provided with refrigerating medium import, refrigerating medium outlet, system on the shell
Cryogen import and refrigerant outlet, it is characterised in that many radiating tube assemblies, the radiating tube group are additionally provided with the shell
Part includes process radiating tube, backhaul radiating tube and capillary, and the process radiating tube is dissipated by the capillary with the backhaul
Heat pipe connects and composes U-shape structure, and the process radiating tube is tightly connected with the refrigerant inlet, the backhaul radiating tube and institute
Refrigerant outlet is stated to be tightly connected.
2. two-tube-pass dry evaporator according to claim 1, it is characterised in that the caliber of the process radiating tube is less than
The caliber of the backhaul radiating tube.
3. two-tube-pass dry evaporator according to claim 2, it is characterised in that the capillary to become caliber structure,
The caliber of the capillary being connected with the process radiating tube is less than the capillary being connected with the backhaul radiating tube
The caliber of pipe connection.
4. two-tube-pass dry evaporator according to claim 1, it is characterised in that be at the two-port of the capillary
Cone mouth structure.
5. two-tube-pass dry evaporator according to claim 1, it is characterised in that the shell includes cylinder, the first envelope
Lid and the second capping, first lidstock are fixed on the Single port of the cylinder, and second lidstock is fixed on institute
The another port of cylinder is stated, the refrigerating medium import and refrigerating medium outlet, described the are provided with the side wall of the cylinder
The refrigerant inlet and the refrigerant outlet are provided with one capping, the capillary is located at the one of the described second capping
Side.
6. two-tube-pass dry evaporator according to claim 5, it is characterised in that sealed in first capping and be provided with
Tube sheet, forms confined space between the tube sheet and first capping, also set up between the tube sheet and first capping
There is a point journey baffle plate, the confined space is divided into the independent process space and backhaul space, the tube sheet by described point of journey baffle plate
Offer multiple process connecting holes and multiple backhaul connecting holes；The process connecting hole and the refrigerant inlet respectively with it is described
The process space is connected, and the backhaul connecting hole and the refrigerant outlet are connected with the backhaul space respectively；The process dissipates
Heat pipe is sealedly connected in the process connecting hole, and the backhaul radiating tube is sealedly connected in the backhaul connecting hole.
7. two-tube-pass dry evaporator according to claim 5, it is characterised in that the refrigerating medium import is near described the
One capping, the refrigerating medium outlet is near the described second capping.
8. two-tube-pass dry evaporator according to claim 7, it is characterised in that the refrigerating medium is located in the cylinder
Refrigerating medium space between import and refrigerating medium outlet is additionally provided with multi-disc dividing plate.
9. two-tube-pass dry evaporator according to claim 8, it is characterised in that the two neighboring dividing plate interlocks and sets
Put, and the two neighboring dividing plate has overlay region along the axis direction of the cylinder.
10. a kind of refrigeration plant, it is characterised in that including the two-tube-pass dry evaporator as described in claim 1-9 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013520.6A CN104776641B (en) | 2014-01-13 | 2014-01-13 | Two-tube-pass dry evaporator and refrigeration plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013520.6A CN104776641B (en) | 2014-01-13 | 2014-01-13 | Two-tube-pass dry evaporator and refrigeration plant |
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| Publication Number | Publication Date |
|---|---|
| CN104776641A CN104776641A (en) | 2015-07-15 |
| CN104776641B true CN104776641B (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410013520.6A Active CN104776641B (en) | 2014-01-13 | 2014-01-13 | Two-tube-pass dry evaporator and refrigeration plant |
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| CN (1) | CN104776641B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895611A (en) * | 2015-12-18 | 2017-06-27 | 清华大学 | A kind of distribution method of dry evaporator and refrigerant |
| CN111076570B (en) * | 2019-12-26 | 2021-11-19 | 浙江瑞鸿机电设备有限公司 | Dry-type shell and tube evaporator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967776U (en) * | 1982-10-26 | 1984-05-08 | 三菱電機株式会社 | Heat exchanger |
| CN2752686Y (en) * | 2004-12-06 | 2006-01-18 | 陈汉康 | Small size refrigerator shell and tube evaporator |
| CN1940456A (en) * | 2005-09-30 | 2007-04-04 | 三洋电机株式会社 | Heat exchanger and air conditioner |
| JP2007263473A (en) * | 2006-03-28 | 2007-10-11 | Sekiyu Combinat Kodo Togo Unei Gijutsu Kenkyu Kumiai | Shell and tube type heat exchanger |
| CN201724594U (en) * | 2010-06-10 | 2011-01-26 | 常州爱斯特空调设备有限公司 | Shell-and-tube dry-type U-shaped tube evaporator |
| CN203744607U (en) * | 2014-01-13 | 2014-07-30 | 海尔集团公司 | Double-tube-pass dry type evaporator and refrigeration equipment |
-
2014
- 2014-01-13 CN CN201410013520.6A patent/CN104776641B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967776U (en) * | 1982-10-26 | 1984-05-08 | 三菱電機株式会社 | Heat exchanger |
| CN2752686Y (en) * | 2004-12-06 | 2006-01-18 | 陈汉康 | Small size refrigerator shell and tube evaporator |
| CN1940456A (en) * | 2005-09-30 | 2007-04-04 | 三洋电机株式会社 | Heat exchanger and air conditioner |
| JP2007263473A (en) * | 2006-03-28 | 2007-10-11 | Sekiyu Combinat Kodo Togo Unei Gijutsu Kenkyu Kumiai | Shell and tube type heat exchanger |
| CN201724594U (en) * | 2010-06-10 | 2011-01-26 | 常州爱斯特空调设备有限公司 | Shell-and-tube dry-type U-shaped tube evaporator |
| CN203744607U (en) * | 2014-01-13 | 2014-07-30 | 海尔集团公司 | Double-tube-pass dry type evaporator and refrigeration equipment |
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| Publication number | Publication date |
|---|---|
| CN104776641A (en) | 2015-07-15 |
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