CN103206882B - Pipe fitting for improving efficiency of evaporator by enabling refrigerant to flow spirally - Google Patents
Pipe fitting for improving efficiency of evaporator by enabling refrigerant to flow spirally Download PDFInfo
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- CN103206882B CN103206882B CN201310110153.7A CN201310110153A CN103206882B CN 103206882 B CN103206882 B CN 103206882B CN 201310110153 A CN201310110153 A CN 201310110153A CN 103206882 B CN103206882 B CN 103206882B
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Abstract
The invention belongs to the technical field of refrigeration, and particularly to a pipe fitting for improving efficiency of an evaporator by enabling a refrigerant to flow spirally. The pipe fitting comprises an inlet pipeline, an outlet pipeline, and a spiral flow guide part used for communicating the inlet pipeline with the outlet pipeline and enabling the refrigerant to flow spirally. As the spiral flow guide part is arranged in the pipeline, the advection advancing way of a gas-liquid two-phase refrigerant output from an expansion valve is changed into a spiral flow advancing way. When the refrigerant flows spirally and forwards, all the refrigerant liquid is tightly close to the wall of the pipeline and flows forwards spirally under the action of the centrifugal force as the specific gravity of the liquid refrigerant is heavier than that of the gas refrigerant. At this moment, the practical contact area of the liquid refrigerant and the pipe wall is far greater than the contact area of the liquid refrigerant in the traditional pipeline and the pipe wall. The pipe fitting for improving efficiency of the evaporator by enabling the refrigerant to flow spirally increases the contact area of the liquid refrigerant and the inner surface of a heat exchanger, can improve heat exchange performance efficiently, and at least can increase more than 10% heat exchange efficiency of the evaporator based on the practical measurement and calculation.
Description
Technical field
The invention belongs to refrigeration technology field, be specifically related to a kind of cold-producing medium helical flow that makes to improve the pipe fitting of evaporator effectiveness.
Background technology
In refrigerant circulating process, cold-producing medium, after the cooling of expansion valve reducing pressure by regulating flow, enters two-phase section (refrigerant liquid and refrigerant gas exist simultaneously), enter evaporimeter subsequently, in evaporimeter, a large amount of latent heat is taken away in refrigerant liquid evaporation, thus reaches the object of refrigeration.
Traditional evaporator tube inner refrigerant mobility status as shown in Figure 1, cold-producing medium is in gas-liquid two-phase state when evaporator inlet section, because refrigerant liquid proportion is comparatively large, therefore refrigerant liquid is in BOP, and refrigerant gas is in TOP because proportion is less.Known as shown in Figure 1, refrigerant liquid in fact only contacts with the downside tube wall of pipeline, along with cold-producing medium is more and more close to evaporator outlet, refrigerant liquid constantly evaporates and becomes gas, refrigerant liquid also reduces gradually, time near evaporator outlet place, refrigerant liquid evaporates become gas completely.
Owing to only contacting with the downside tube wall of pipeline when refrigerant liquid flows in pipeline, therefore refrigerant liquid and pipeline tube wall directly contact and the area of heat exchange is less than all lateral areas of refrigerant liquid undoubtedly, focus mostly on when improving the coefficient of heat transfer of heat exchanger itself in the current research improved evaporator heat exchange efficiency, the flow regime how improving cold-producing medium with improve the contact area of refrigerant liquid and pipeline tube wall be one to the technical barrier improving evaporator heat exchange efficiency and have great significance.
Summary of the invention
The object of this invention is to provide a kind of cold-producing medium helical flow that makes to improve the pipe fitting of evaporator effectiveness, this pipe fitting can improve the flow regime of cold-producing medium in pipeline, and effectively can improve the contact area of refrigerant liquid and pipeline tube wall.
For achieving the above object, the technical solution adopted in the present invention is: a kind of cold-producing medium helical flow that makes is to improve the pipe fitting of evaporator effectiveness, this pipe fitting comprises entrance pipe and export pipeline, and described pipe fitting also comprises for being communicated with entrance pipe and export pipeline and making the spiral stream guidance parts of cold-producing medium helical flow.
Meanwhile, the present invention can also be able to further realization by following technical measures:
Preferably, described entrance pipe is arranged on the top of spiral stream guidance parts, and entrance pipe is vertically connected with the entrance of spiral stream guidance parts; Described export pipeline is connected with the outlet of spiral stream guidance parts in the horizontal direction.
Preferably, be provided with cone shape tube chamber in described spiral stream guidance parts, the cone bottom of described coniform tube chamber is provided with the entrance be connected with entrance pipe, and the conehead place of coniform tube chamber is provided with the outlet be connected with export pipeline.
Further, described spiral stream guidance parts comprise water conservancy diversion main body and are arranged on the plug in water conservancy diversion main body, surround cone shape tube chamber, described water conservancy diversion main body offers entrance and exit respectively between described water conservancy diversion main body and plug.
Further, described water conservancy diversion main body cylindrically, described plug is cylindric in what match with the inner chamber of cylindric water conservancy diversion main body, one end of cylindric plug extends to the tubular inner chamber of water conservancy diversion main body and forms cone shape cone head part, and the outside wall surface of described cone head part and the internal face of water conservancy diversion main body surround cone shape tube chamber jointly.
Beneficial effect of the present invention is:
1), the present invention by arranging spiral stream guidance parts in pipeline, the advection from expansion valve gas-liquid two-phase cold-producing medium is out advanced and becomes helical flow progression.When cold-producing medium helical flow is advanced, due to refrigerant liquid proportion than refrigerant gas than great, under the influence of centrifugal force, refrigerant liquid is all close to pipeline tube wall and spiral and is advanced.Refrigerant liquid now in the present invention and the real contact area of tube wall will be far longer than the contact area of refrigerant liquid and tube wall in conventional tube.This Bottomhole pressure mode, relatively increases the contact area of refrigerant liquid and heat exchanger inner surface, effectively can improve heat exchange property, and border measuring and calculating factually, at least can improve the heat exchange efficiency of evaporimeter more than 10%.
2), due to the helical flow progression of cold-producing medium, therefore in the present invention, refrigerant liquid surface contacts relatively uniform with tube wall, therefore can the frosting velocity of retard evaporation device effectively.
Accompanying drawing explanation
Fig. 1 is the distribution situation schematic diagram of conventional evaporator tube refrigerant liquid, gas.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the A-A generalized section of Fig. 2.
Fig. 4 is the distribution situation schematic diagram using pipe fitting finisher tube refrigerant liquid of the present invention, gas.
The implication marked in figure is as follows:
1-entrance pipe, 2-water conservancy diversion main body, 3-export pipeline, 4-plug
5-cone head part, 6-refrigerant liquid, 7-refrigerant gas, 8-evaporator tube
Detailed description of the invention
As shown in Figure 2,3, a kind of cold-producing medium helical flow that makes is to improve the pipe fitting of evaporator effectiveness, this pipe fitting comprises entrance pipe 1 and export pipeline 3, and described pipe fitting also comprises for being communicated with entrance pipe 1 and export pipeline 3 and making the spiral stream guidance parts of cold-producing medium helical flow.
Entrance pipe 1 in Fig. 2,3 is arranged on the top of spiral stream guidance parts, and entrance pipe 1 is vertically connected with the entrance of spiral stream guidance parts; Described export pipeline 3 is connected with the outlet of spiral stream guidance parts in the horizontal direction.
Entrance pipe 1 is in vertical direction, and export pipeline 3 is in horizontal direction, therefore forms 90 degree of angles between entrance pipe 1 and export pipeline 3, and this angle more easily makes cold-producing medium form helical flow, so be preferred version of the present invention.
As shown in Figure 3, be provided with cone shape tube chamber in described spiral stream guidance parts, the cone bottom of described coniform tube chamber is provided with the entrance be connected with entrance pipe 1, and the conehead place of coniform tube chamber is provided with the outlet be connected with export pipeline 3.
Spiral stream guidance parts can be single integrated poured shaping parts, also can be that multiple part combination forms, as preferred version of the present invention, as shown in Figure 2,3, the plug 4 that described spiral stream guidance parts comprise water conservancy diversion main body 2 and are arranged in water conservancy diversion main body 2, surround cone shape tube chamber between described water conservancy diversion main body 2 and plug 4, described water conservancy diversion main body 2 offers entrance and exit respectively.
The split-type structural that spiral stream guidance parts adopt water conservancy diversion main body 2 and plug 4 to combine, not only for ease of maintenaince maintain, and structure is simple, cost is lower.
Further, described water conservancy diversion main body 2 cylindrically, described plug 4 is cylindric in what match with the inner chamber of cylindric water conservancy diversion main body 2, one end of cylindric plug 4 extends to the tubular inner chamber of water conservancy diversion main body 2 and forms cone shape cone head part 5, and the outside wall surface of described cone head part 5 and the internal face of water conservancy diversion main body 2 surround cone shape tube chamber jointly.
Described water conservancy diversion main body 2 cylindrically, and cylindric with cone head part 5 of plug 4 one-tenth, thus the two is all convenient to machine-shaping, is easy to produce.
Below in conjunction with Figure of description 3,4, the present invention will be further described:.
As shown in Figure 3, to be entered the spiral stream guidance parts be made up of water conservancy diversion main body 2 and plug 4 from top to bottom by entrance pipe 1 from expansion valve gas-liquid two-phase cold-producing medium out, due to the effect of centrifugal tangential force, cold-producing medium changes direct of travel in the coniform inner chamber and cone-shaped tube paths of spiral stream guidance parts, and become helical flow progression, when cold-producing medium is entered after in export pipeline 3 by the outlet of spiral stream guidance parts, because the proportion of refrigerant liquid 6 is larger, under the double action of effect of inertia and centrifugal tangential force, the pipe wall screw that refrigerant liquid 6 is close to export pipeline 3 advances and enters evaporimeter, along with cold-producing medium is more and more close to evaporator outlet, refrigerant liquid 6 constantly evaporation becomes refrigerant gas 7, and refrigerant liquid 6 reduces gradually, and time near exit, refrigerant liquid 6 evaporates become refrigerant gas 7 completely, as shown in Figure 4.
Claims (2)
1. one kind makes cold-producing medium helical flow to improve the pipe fitting of evaporator effectiveness, it is characterized in that: this pipe fitting comprises entrance pipe (1) and export pipeline (3), described pipe fitting also comprises for being communicated with entrance pipe (1) and export pipeline (3) and making the spiral stream guidance parts of cold-producing medium helical flow;
Cone shape tube chamber is provided with in described spiral stream guidance parts, the cone bottom of described coniform tube chamber is provided with the entrance be connected with entrance pipe (1), and the conehead place of coniform tube chamber is provided with the outlet be connected with export pipeline (3);
Described spiral stream guidance parts comprise water conservancy diversion main body (2) and are arranged on the plug (4) in water conservancy diversion main body (2), surround cone shape tube chamber between described water conservancy diversion main body (2) and plug (4), described water conservancy diversion main body (2) offers entrance and exit respectively;
Described water conservancy diversion main body (2) cylindrically, described plug (4) is cylindric in what match with the inner chamber of cylindric water conservancy diversion main body (2), one end of cylindric plug (4) extends to the tubular inner chamber of water conservancy diversion main body (2) and forms cone shape cone head part (5), and the outside wall surface of described cone head part (5) and the internal face of water conservancy diversion main body (2) surround cone shape tube chamber jointly.
2. the cold-producing medium helical flow that makes according to claim 1 is to improve the pipe fitting of evaporator effectiveness, it is characterized in that: described entrance pipe (1) is arranged on the top of spiral stream guidance parts, and entrance pipe (1) is vertically connected with the entrance of spiral stream guidance parts; Described export pipeline (3) is connected with the outlet of spiral stream guidance parts in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110153.7A CN103206882B (en) | 2013-03-29 | 2013-03-29 | Pipe fitting for improving efficiency of evaporator by enabling refrigerant to flow spirally |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310110153.7A CN103206882B (en) | 2013-03-29 | 2013-03-29 | Pipe fitting for improving efficiency of evaporator by enabling refrigerant to flow spirally |
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| Publication Number | Publication Date |
|---|---|
| CN103206882A CN103206882A (en) | 2013-07-17 |
| CN103206882B true CN103206882B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310110153.7A Active CN103206882B (en) | 2013-03-29 | 2013-03-29 | Pipe fitting for improving efficiency of evaporator by enabling refrigerant to flow spirally |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976743A (en) * | 2014-04-09 | 2015-10-14 | 大金工业株式会社 | Cooling device |
| CN109387090B (en) * | 2018-10-26 | 2024-06-21 | 唐山钢铁集团有限责任公司 | Spiral condensing heat exchanger and heat exchange method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2435709Y (en) * | 2000-06-12 | 2001-06-20 | 沙金良 | Heat condensation recovery refrigerator |
| CN101097104A (en) * | 2006-06-30 | 2008-01-02 | 株式会社电装 | Gas-liquid two-phase liquid distributor |
| CN103003640A (en) * | 2010-07-23 | 2013-03-27 | 开利公司 | Ejector cycle refrigerant separator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001050613A (en) * | 1999-08-10 | 2001-02-23 | Daikin Ind Ltd | Refrigerant distributor |
| JP2008039304A (en) * | 2006-08-07 | 2008-02-21 | Sharp Corp | Heat exchanger |
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2013
- 2013-03-29 CN CN201310110153.7A patent/CN103206882B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2435709Y (en) * | 2000-06-12 | 2001-06-20 | 沙金良 | Heat condensation recovery refrigerator |
| CN101097104A (en) * | 2006-06-30 | 2008-01-02 | 株式会社电装 | Gas-liquid two-phase liquid distributor |
| CN103003640A (en) * | 2010-07-23 | 2013-03-27 | 开利公司 | Ejector cycle refrigerant separator |
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| CN103206882A (en) | 2013-07-17 |
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Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 29 Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 29 Patentee before: HEFEI GENERAL MACHINERY Research Institute |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 29 Patentee before: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. |
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