CN203249432U - Variable-tooth internal thread reinforced tube evaporator - Google Patents
Variable-tooth internal thread reinforced tube evaporator Download PDFInfo
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- CN203249432U CN203249432U CN 201320174066 CN201320174066U CN203249432U CN 203249432 U CN203249432 U CN 203249432U CN 201320174066 CN201320174066 CN 201320174066 CN 201320174066 U CN201320174066 U CN 201320174066U CN 203249432 U CN203249432 U CN 203249432U
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Abstract
本实用新型涉及一种变齿形内螺纹强化管蒸发器，特点是包括二根以上的第一段管、二根以上的第二段管、三个以上的连接弯头及二片以上的翅片；在所述第一段管内壁的轴向均匀设有三条以上的齿条，齿条呈螺旋分布；第二段管的长度与第一段管的长度相同，在第二段管内壁的轴向均匀设有三条以上的齿条，齿条呈螺旋分布；第一段管的齿条数与第二段管的齿条数的比值范围为0.7-1，第一段管的齿条螺旋角与第二段管的齿条螺旋角的比值范围为1-2；按制冷剂流动方向连接弯头将相邻各段管连通；每片翅片套设在所有的第一段管与第二段管上。其优点为：制冷剂在蒸发器的整个换热过程中，不同制冷剂干度范围采用不同齿形的强化换热管，使蒸发器的整体换热效果最佳，从而提高制冷系统性能。
The utility model relates to an evaporator with variable-toothed internal thread reinforced tubes, which is characterized in that it comprises more than two first-section tubes, more than two second-section tubes, more than three connecting elbows and more than two fins slices; in the axial direction of the inner wall of the first section of the tube, more than three racks are uniformly arranged, and the racks are distributed in a spiral; the length of the second section of the tube is the same as that of the first section of the tube, and the There are more than three racks evenly arranged in the axial direction, and the racks are distributed in a spiral; the ratio of the number of racks in the first section of pipe to the number of racks in the second section of pipe is 0.7-1, and the number of racks in the first section of pipe is spiral The ratio of the angle to the rack helix angle of the second tube is 1-2; the elbow is connected according to the refrigerant flow direction to connect the adjacent tubes; each fin is sleeved between all the first tube and the second tube. On the second pipe. Its advantages are: during the entire heat exchange process of the refrigerant in the evaporator, different tooth-shaped enhanced heat exchange tubes are used for different refrigerant dryness ranges, so that the overall heat exchange effect of the evaporator is the best, thereby improving the performance of the refrigeration system.
Description
Technical field
The utility model patent relates to a kind of change profile of tooth internal thread enhanced tube evaporimeter of refrigeration system enhanced heat exchange technology, especially air-conditioner evaporator enhanced heat exchange technology.
Background technology
Evaporimeter is one of critical component of refrigeration system, and is larger on the impact of refrigeration plant overall performance.For improving the evaporimeter heat transfer effect, reduce its material consumption, inner screw thread copper pipe is widely used in the refrigeration plant evaporimeter.For improving heat transfer effect, each inner screw thread copper pipe manufacturing enterprise has developed the inner screw thread copper pipe of multiple profile of tooth, but a basic principle is exactly the heat transfer resistance that increases the turbulent flow of intraductal heat exchange area, reinforced pipe inner refrigerant and reduce liquid.All adopt at present the inner screw thread copper pipe of same profile of tooth in same evaporimeter, the profile of tooth of its inner screw thread copper pipe is based on cold-producing medium boiling heat transfer strengthening mechanism design in evaporimeter.But in fact, the heat transfer process of cold-producing medium in evaporimeter is a heat transfer process from the saturated liquid to the superheated steam, the mass dryness fraction of cold-producing medium in evaporimeter progressively becomes 1 from 0, namely hang down mass dryness fraction section refrigerant liquid large percentage at the evaporimeter leading portion, the major measure that adopts internal thread enhanced tube enhanced heat exchange is to increase the cold-producing medium rotary speed, form preferably Gregoring effect, therefore can suitably increase helical angle, can increase tooth bottom width degree by reducing the tooth bar number in addition, also be conducive to reduce the refrigerant liquid heat transfer resistance.And also be high mass dryness fraction section refrigerant gas large percentage at the evaporimeter back segment, the major measure that adopts internal thread enhanced tube enhanced heat exchange is to increase heat exchange area, reduce the flow of refrigerant resistance, therefore can suitably increase the tooth bar number, reduce the anglec of rotation.Therefore according to the internal thread thermoexcell of cold-producing medium at the different mass dryness fraction stage of evaporimeter employing dissimilar tooth form, can realize the heat transfer effect of evaporimeter the best.
Summary of the invention
The purpose of this utility model provides a kind of change profile of tooth internal thread enhanced tube evaporimeter, adopt the internal thread thermoexcell of dissimilar tooth form in the different mass dryness fraction stage of evaporimeter according to cold-producing medium, so that whole evaporimeter reaches best heat transfer effect, thereby improve performance of refrigerant systems.
In order to achieve the above object, a kind of technical scheme of the present utility model is that it is a kind of change profile of tooth internal thread enhanced tube evaporimeter, it is characterized in that comprising:
First paragraph pipe more than two, at the axial tooth bar that evenly is provided with more than three of described first paragraph inside pipe wall, described tooth bar is in spiral distribution;
Second segment pipe more than two, the length of second segment pipe is identical with the length of first paragraph pipe, and at the axial tooth bar that evenly is provided with more than three of second segment inside pipe wall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe and the tooth bar number of second segment pipe is 0.7-1, and the ratio range of the tooth bar helical angle of first paragraph pipe and the tooth bar helical angle of second segment pipe is 1-2;
Connecting bend more than three is communicated with adjacent each section pipe by the described connecting bend of flow of refrigerant direction; With
Fin more than two, every fin is set on all the first paragraph pipe and second segment pipe.
The radical ratio range of the radical of described first paragraph pipe and second segment pipe is 3/7-7/3.
Described first paragraph pipe all equates with external diameter and the internal diameter of second segment pipe.
The external diameter of described first paragraph pipe is 7mm, and pipe thickness is 0.25mm, and the tooth bar height of first paragraph pipe is 0.2mm, and the tooth bar number is 50, and the helical angle of tooth bar is 25 °, and addendum angle is 25 °; The external diameter of described second segment pipe is 7mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe is 0.2mm, and the tooth bar number is 60, and helical angle is 15 °, and addendum angle is 25 °.
In order to achieve the above object, another kind of technical scheme of the present utility model is that it is a kind of change profile of tooth internal thread enhanced tube evaporimeter, it is characterized in that comprising:
First paragraph pipe more than two, at the axial tooth bar that evenly is provided with more than three of described first paragraph inside pipe wall, described tooth bar is in spiral distribution;
Second segment pipe more than two, the length of described second segment pipe is identical with the length of first paragraph pipe, and at the axial tooth bar that evenly is provided with more than three of second segment inside pipe wall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe and the tooth bar number of second segment pipe is 0.7-1, and the ratio range of the tooth bar helical angle of first paragraph pipe and the tooth bar helical angle of second segment pipe is 1-2;
The 3rd section pipe more than two, the length of described the 3rd section pipe is identical with the length of second segment pipe, and at the axial tooth bar that evenly is provided with more than three of the 3rd section inside pipe wall, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of the tooth bar number of second segment pipe and the 3rd section pipe is 0.7-1, and the ratio range of the tooth bar helical angle of the tooth bar helical angle of second segment pipe and the 3rd section pipe is 1-2;
Connecting bend more than three is communicated with adjacent each section pipe by the described connecting bend of flow of refrigerant direction; With the fin more than two, every fin is set on all first paragraph pipes, second segment pipe and the 3rd section pipe.
The radical of described first paragraph pipe accounts for the 1/10-2/3 of the total radical of whole pipeline sections; The radical of second segment pipe accounts for the 1/10-2/3 of the total radical of whole pipeline sections; The radical of the 3rd section pipe accounts for the 1/10-2/3 of the total radical of whole pipeline sections.
The external diameter of described first paragraph pipe, second segment pipe and the 3rd section pipe and internal diameter all equate.
The external diameter of described first paragraph pipe 1 is 7mm, and pipe thickness is 0.25mm, and the tooth bar height of first paragraph pipe 1 is 0.2mm, and the tooth bar number is 45, and the helical angle of tooth bar is 25 °, and addendum angle is 25 °; The external diameter of described second segment pipe 4 is 7mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe 4 is 0.2mm, and the tooth bar number is 50, and helical angle is 20 °, and addendum angle is 25 °.The external diameter of described the 3rd section pipe 5 is 7mm, and pipe thickness is 0.25mm, and the tooth bar height of the 3rd section pipe 5 is 0.2mm, and the tooth bar number is 60, and the helical angle of tooth bar is 15 °, and the phase addendum angle is 25 °.
The utility model advantage compared with prior art is: cold-producing medium is in the whole heat transfer process of evaporimeter, and different cold-producing medium mass dryness fraction scopes adopt the thermoexcell of dissimilar tooth form, makes the overall heat exchange best results of evaporimeter, thereby improves performance of refrigerant systems.
Description of drawings
Fig. 1 is the assembly structure schematic diagram of the utility model embodiment one;
Fig. 2 is the axial sectional drawing of the first paragraph pipe of the utility model embodiment one;
Fig. 3 is that the partial left of Fig. 2 is looked enlarged drawing;
Fig. 4 is the axial sectional drawing of the second segment pipe of the utility model embodiment one;
Fig. 5 is that the partial left of Fig. 4 is looked enlarged drawing;
Fig. 6 is the assembly structure schematic diagram of the utility model embodiment two;
Fig. 7 is the axial sectional drawing of the first paragraph pipe of the utility model embodiment two;
Fig. 8 is that the partial left of Fig. 7 is looked enlarged drawing;
Fig. 9 is the axial sectional drawing of the second segment pipe of the utility model embodiment two;
Figure 10 is that the partial left of Fig. 9 is looked enlarged drawing;
Figure 11 is the axial sectional drawing of the 3rd section pipe of the utility model embodiment two;
Figure 12 is that the partial left of Figure 11 is looked enlarged drawing.
The specific embodiment
The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings, among the figure from start to finish identical or similar label represent identical or similar element or the element with identical or similar functions.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, term " first ", " second " reach " the 3rd " and only are used for describing purpose, and can not be interpreted as indication or hint relative importance.
Embodiment one
Shown in Fig. 1 to 5, it is a kind of change profile of tooth internal thread enhanced tube evaporimeter, comprises first paragraph pipe 1, the second segment pipe 4 more than two, the connecting bend more than three 3 and the fin more than two 2 more than two; Wherein at the axial tooth bar that evenly is provided with more than three of described first paragraph pipe 1 inwall, described tooth bar is in spiral distribution; The length of described second segment pipe 4 is identical with the length of first paragraph pipe 1, and at the axial tooth bar that evenly is provided with more than three of second segment pipe 4 inwalls, described tooth bar is in spiral distribution; The ratio range of the tooth bar number of first paragraph pipe 1 and the tooth bar number of second segment pipe 4 is 0.7-1, the ratio of the tooth bar number of the tooth bar number of first paragraph pipe 1 and second segment pipe 4 is 5/6 in the present embodiment, also can select within the limits prescribed according to actual needs the ratio of the tooth bar number of the tooth bar number of first paragraph pipe 1 and second segment pipe 4; The ratio range of the tooth bar helical angle of first paragraph pipe 1 and the tooth bar helical angle of second segment pipe 4 is 1-2, the ratio of the tooth bar helical angle of the tooth bar helical angle of first paragraph pipe 1 and second segment pipe 4 is 5/3 in the present embodiment, also can select within the limits prescribed according to actual needs the ratio of the tooth bar helical angle of the tooth bar helical angle of first paragraph pipe 1 and second segment pipe 4; By the described connecting bend 3 of flow of refrigerant direction adjacent each section pipe is communicated with; Every fin 2 is set on all first paragraph pipes 1 and the second segment pipe 4.
During work, cold-producing medium enters from the entrance of the first paragraph pipe 1 of initial end, flows out from the outlet of the second segment pipe 4 of least significant end; Cold-producing medium evaporates in first paragraph pipe 1, increases along flow of refrigerant direction cold-producing medium mass dryness fraction, then enters the 4 interior continuation evaporations of second segment pipe, and all becomes refrigerant gas.
The radical ratio range of the radical of described first paragraph pipe and second segment pipe is 3/7-7/3; Be provided with in the present embodiment four first paragraph pipes 1 and four second segment pipes 4, also can select within the limits prescribed according to actual needs the radical of first paragraph pipe 1 and second segment pipe 4.
In the present embodiment, described first paragraph pipe 1 all equates with external diameter and the internal diameter of second segment pipe 4.
In the present embodiment, the external diameter of described first paragraph pipe 1 is 7mm, and pipe thickness is 0.25mm, and the tooth bar height of first paragraph pipe 1 is 0.2mm, and the tooth bar number is 50, and the helical angle of tooth bar is 25 °, and addendum angle is 25 °; The external diameter of described second segment pipe 4 is 7mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe 4 is 0.2mm, and the tooth bar number is 60, and helical angle is 15 °, and addendum angle is 25 °.
Embodiment two
Shown in Fig. 6 to 12, it is a kind of change profile of tooth internal thread enhanced tube evaporimeter, comprises first paragraph pipe 1, the second segment pipe 4 more than two, connecting bend 3 and the fin two slice or more 2 of the 3rd section pipe more than 5, three more than two more than two; Wherein the inwall of described first paragraph pipe 1, second segment pipe 4 and the 3rd section pipe 5 axially evenly be provided with tooth bar more than three, described tooth bar is in spiral distribution; The identical length of described first paragraph pipe 1, second segment pipe 4 and the 3rd section pipe 5 together.The ratio range of the tooth bar number of described first paragraph pipe 1 and the tooth bar number of second segment pipe 4 is 0.7-1, the ratio of the tooth bar number of the tooth bar number of first paragraph pipe 1 and second segment pipe 4 is 9/10 in the present embodiment, also can select within the limits prescribed according to actual needs the ratio of the tooth bar number of the tooth bar number of first paragraph pipe 1 and second segment pipe 4; The ratio range of the tooth bar number of the tooth bar number of described second segment pipe 4 and the 3rd section pipe 5 is 0.7-1, the ratio of the tooth bar number of the tooth bar number of second segment pipe 4 and the 3rd section pipe 5 is 5/6 in the present embodiment, the tooth bar number that also can select within the limits prescribed according to actual needs second segment pipe 4 and the 3rd section ratio of managing 5 tooth bar number; The ratio range of the tooth bar helical angle of first paragraph pipe 1 and the tooth bar helical angle of second segment pipe 4 is 1-2, the ratio of the tooth bar helical angle of the tooth bar helical angle second segment pipe 4 of first paragraph pipe 1 is 5/4 in the present embodiment, also can select within the limits prescribed according to actual needs the ratio of the tooth bar helical angle of the tooth bar helical angle of first paragraph pipe 1 and second segment pipe 4; The ratio range of the tooth bar helical angle of the tooth bar helical angle of second segment pipe 4 and the 3rd section pipe 5 is 1-2, the ratio of the tooth bar helical angle of the tooth bar helical angle of second segment pipe 4 and the 3rd section pipe 5 is 4/3 in the present embodiment, the tooth bar helical angle that also can select within the limits prescribed according to actual needs second segment pipe 4 and the 3rd section ratio of managing 5 tooth bar helical angle; By the described connecting bend 3 of flow of refrigerant direction adjacent each section pipe is communicated with; Every fin 2 is set on all first paragraph pipes 1, second segment pipe 4 and the 3rd pipeline section 5.
During work, cold-producing medium enters from the entrance of the first paragraph pipe 1 of initial end, flows out from the outlet of the 3rd section of least significant end pipe 5; Cold-producing medium evaporates in first paragraph pipe 1, increase along flow of refrigerant direction cold-producing medium mass dryness fraction, then enter the 4 interior continuation evaporations of second segment pipe, continue to increase along flow of refrigerant direction cold-producing medium mass dryness fraction, enter at last the 5 interior continuation evaporations of the 3rd section pipe, and all become refrigerant gas.
The radical of described first paragraph pipe accounts for the 1/10-2/3 of the total radical of whole pipeline sections, is 1/4 in the present embodiment; The radical of second segment pipe accounts for the 1/10-2/3 of the total radical of whole pipeline sections, is 1/2 in the present embodiment; The radical of the 3rd section pipe accounts for the 1/10-2/3 of the total radical of whole pipeline sections, is 1/4 in the present embodiment.
In the present embodiment, the external diameter of described first paragraph pipe 1, second segment pipe 4 and the 3rd section pipe 5 and internal diameter all equate.
In the present embodiment, the external diameter of described first paragraph pipe 1 is 7mm, and pipe thickness is 0.25mm, and the tooth bar height of first paragraph pipe 1 is 0.2mm, and the tooth bar number is 45, and the helical angle of tooth bar is 25 °, and addendum angle is 25 °; The external diameter of described second segment pipe 4 is 7mm, and pipe thickness is 0.25mm, and the tooth depth of the tooth bar of second segment pipe 4 is 0.2mm, and the tooth bar number is 50, and helical angle is 20 °, and addendum angle is 25 °.The external diameter of described the 3rd section pipe 5 is 7mm, and pipe thickness is 0.25mm, and the tooth bar height of the 3rd section pipe 5 is 0.2mm, and the tooth bar number is 60, and the helical angle of tooth bar is 15 °, and the phase addendum angle is 25 °.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and distortion to these embodiment in the situation that does not break away from principle of the present utility model and aim, scope of the present utility model is limited by claim and equivalent thereof.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320174066 CN203249432U (en) | 2013-04-09 | 2013-04-09 | Variable-tooth internal thread reinforced tube evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320174066 CN203249432U (en) | 2013-04-09 | 2013-04-09 | Variable-tooth internal thread reinforced tube evaporator |
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| Publication Number | Publication Date |
|---|---|
| CN203249432U true CN203249432U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320174066 Expired - Fee Related CN203249432U (en) | 2013-04-09 | 2013-04-09 | Variable-tooth internal thread reinforced tube evaporator |
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| CN (1) | CN203249432U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225933A (en) * | 2013-04-09 | 2013-07-31 | 顺德职业技术学院 | Evaporator with variable-toothform internal-thread enhanced tube |
| CN108507373A (en) * | 2018-05-28 | 2018-09-07 | 广东美的厨房电器制造有限公司 | Freeze smoke machine |
-
2013
- 2013-04-09 CN CN 201320174066 patent/CN203249432U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225933A (en) * | 2013-04-09 | 2013-07-31 | 顺德职业技术学院 | Evaporator with variable-toothform internal-thread enhanced tube |
| CN103225933B (en) * | 2013-04-09 | 2015-08-26 | 顺德职业技术学院 | Become profile of tooth internal thread enhanced tube evaporimeter |
| CN108507373A (en) * | 2018-05-28 | 2018-09-07 | 广东美的厨房电器制造有限公司 | Freeze smoke machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20160409 |