CN212157733U - Variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator - Google Patents
Variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator Download PDFInfo
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- CN212157733U CN212157733U CN202020190352.9U CN202020190352U CN212157733U CN 212157733 U CN212157733 U CN 212157733U CN 202020190352 U CN202020190352 U CN 202020190352U CN 212157733 U CN212157733 U CN 212157733U
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Abstract
The utility model relates to a variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator, which is characterized by comprising more than two first section pipes, more than two second section pipes and more than three connecting elbows; each first section of pipe is an oval pipe, the first section of pipe is in a twisted shape, and the twisted pitch of the first section of pipe is S1; each second section of pipe is an elliptical pipe, the second section of pipe is in a twisted shape, the twisted pitch of the second section of pipe is S2, the length of the second section of pipe is the same as that of the first section of pipe, the major axis and the minor axis of the ellipse of the second section of pipe are different from those of the ellipse of the first section of pipe, and the pitch S2 of the second section of pipe is different from that S1 of the first section of pipe; two adjacent first section pipes are communicated in series through connecting elbows to form a first section pipe group, two adjacent second section pipes are communicated in series through connecting elbows to form a second section pipe group, and the first section pipe group and the second section pipe group are communicated in series through the connecting elbows to form an evaporator. The heat exchanger has the advantages of improving the whole heat exchange effect, reducing consumed materials, reducing the filling amount of the refrigerant and the like.
Description
Technical Field
The patent of the utility model relates to a refrigerating system evaporimeter technique, especially become oval enhanced tube evaporimeter technique of compound distortion of pipe diameter.
Background
Refrigeration equipment faces two major problems, namely how to improve the performance of a refrigeration system and how to adopt an environment-friendly refrigerant. The method for improving the heat exchange effect of the evaporator by adopting the enhanced heat exchange technology is one of important technical means for improving the performance of the refrigeration system, and the method for reducing the refrigerant charge of the refrigeration system by reducing the pipe diameter of the evaporator is also one of important technical means for solving the application of the environment-friendly refrigerant. In the field of refrigeration air conditioners, the twisted elliptical reinforced pipe technology is a common technology in evaporators at present, but twisted elliptical reinforced pipes with single pipe diameters are mostly adopted, and by adopting the technology, the heat exchange area is large, the flow resistance of a refrigerant is small, the overall heat exchange effect of the evaporator is favorably improved, but the consumption of heat exchange pipe materials is large, and the refrigerant filling amount is also large.
The heat exchange process of the refrigerant in the evaporator is a heat exchange process from low dryness (close to saturated liquid) to superheated steam, the liquid proportion in the refrigerant at the front section of the evaporator, namely a low dryness section, is larger, the flow resistance of the refrigerant is relatively smaller, the main measures of adopting the internal thread reinforced pipe to strengthen the heat exchange are to increase the rotation speed and the section flow rate of the refrigerant to form a better Gregoring effect, the main measures of adopting the internal thread reinforced pipe to strengthen the heat exchange are to increase the heat exchange area and reduce the flow resistance of the refrigerant at the rear section of the evaporator, namely a high dryness section, are larger. Obviously, the technical contradiction can be solved more effectively by adopting the technical scheme of adopting different heat exchange enhancement modes at different refrigerant dryness stages in the evaporator.
Disclosure of Invention
The utility model aims at overcoming prior art not enough and providing a become oval enhanced tube evaporator of compound distortion of pipe diameter, the refrigerant is at the whole heat transfer in-process of evaporator, and different refrigerant quality ranges adopt the enhancement heat exchange tube of the oval length of different distortions, minor axis and pitch, make the whole heat transfer effect of evaporator improve, the consumed material reduces to reduce the refrigerant charge volume.
In order to achieve the above object, the first technical scheme of the utility model is that, it is a become oval enhanced tube evaporator of compound distortion of pipe diameter, its characterized in that includes:
two or more first-stage pipes; each first section of pipe is an oval pipe, the first section of pipe is in a twisted shape, and the twisted pitch of the first section of pipe is S1;
two or more second-stage pipes; each second section of pipe is an elliptical pipe, the second section of pipe is in a twisted shape, the twisted pitch of the second section of pipe is S2, the length of the second section of pipe is the same as that of the first section of pipe, the major axis and the minor axis of the ellipse of the second section of pipe are different from those of the ellipse of the first section of pipe, and the pitch S2 of the second section of pipe is different from that S1 of the first section of pipe; the ratio range of the major axis of the ellipse of the second section of tube to the major axis of the ellipse of the first section of tube is 1.1-2.0, and the ratio range of the minor axis of the ellipse of the second section of tube to the minor axis of the ellipse of the first section of tube is 1.1-2.0; the ratio of the pitch S2 of the second section of tubes to the pitch S1 of the first section of tubes is in the range of 0.5-0.9; and
more than three connecting elbows; two adjacent first section pipes are communicated in series through connecting elbows to form a first section pipe group, two adjacent second section pipes are communicated in series through connecting elbows to form a second section pipe group, and the first section pipe group and the second section pipe group are communicated in series through the connecting elbows to form an evaporator.
In the technical scheme, the number of the first-stage tubes accounts for 1/5-4/5 of the total number, and the number of the second-stage tubes accounts for 1/5-4/5 of the total number.
In order to achieve the above object, the second technical scheme of the utility model is that, it is a become oval enhanced tube evaporator of compound distortion of pipe diameter, its characterized in that includes:
two or more first-stage pipes; the first section of pipe is an oval pipe, the first section of pipe is twisted, and the twisted pitch of the first section of pipe is S1;
two or more second-stage pipes; each second section of pipe is an elliptical pipe, the second section of pipe is in a twisted shape, the twisted pitch of the second section of pipe is S2, the length of the second section of pipe is the same as that of the first section of pipe, the major axis and the minor axis of the ellipse of the second section of pipe are different from those of the ellipse of the first section of pipe, and the pitch S2 of the second section of pipe is different from that S1 of the first section of pipe; the ratio range of the major axis of the ellipse of the second section of tube to the major axis of the ellipse of the first section of tube is 1.1-2.0, and the ratio range of the minor axis of the ellipse of the second section of tube to the minor axis of the ellipse of the first section of tube is 1.1-2.0; the ratio of the pitch S2 of the second section of tubes to the pitch S1 of the first section of tubes is in the range of 0.5-0.9;
two or more third-stage pipes; each third section of pipe is an elliptical pipe, the third section of pipe is in a twisted shape, the twisted pitch of the third section of pipe is S3, the length of the third section of pipe is the same as that of the second section of pipe, the major axis and the minor axis of the ellipse of the third section of pipe are different from those of the ellipse of the second section of pipe, and the pitch S3 of the third section of pipe is different from that S2 of the second section of pipe; the ratio range of the major axis of the ellipse of the third section of tube to the major axis of the ellipse of the second section of tube is 1.1-1.5, and the ratio range of the minor axis of the ellipse of the third section of tube to the minor axis of the ellipse of the second section of tube is 1.1-1.5; the ratio of the pitch S3 of the third section of tubes to the pitch S1 of the second section of tubes is 0.5-0.9; and
more than five connecting elbows; two adjacent first section pipes are communicated in series through connecting elbows to form a first section pipe group, two adjacent second section pipes are communicated in series through connecting elbows to form a second section pipe group, two adjacent third section pipes are communicated in series through connecting elbows to form a third section pipe group, and the first section pipe group, the second section pipe group and the third section pipe group are sequentially communicated in series through the connecting elbows to form the evaporator.
In the technical scheme, the number of the first section of pipe accounts for 1/10-2/3 of the total number of all pipe sections; the number of the second segment of pipe is 1/10-2/3 of the total number of all pipe segments; the number of the third segment of tubes accounts for 1/10-2/3 of the total number of all tube segments.
Compared with the prior art, the utility model the advantage do: the twisted strengthening heat exchange tubes with different elliptical long and short axes and pitches are respectively adopted at different dryness stages when the refrigerant flows through the heat exchanger; in the stage of low dryness of the refrigerant, the proportion of the refrigerant liquid in the heat exchange tube is large, the flow velocity in the refrigerant tube is relatively small, the flow velocity of the refrigerant is improved and the heat transfer resistance of the refrigerant liquid is reduced by reducing the length and the short axis of the distorted elliptical tube and increasing the pitch, and simultaneously, the material consumption of the heat exchange tube is reduced and the refrigerant filling amount is reduced; at the stage of high dryness of the refrigerant, the proportion of the refrigerant gas in the heat exchange tube is large, the flow velocity in the refrigerant tube is large, and the heat exchange area is increased and the flow resistance is reduced by increasing the length and the short axis of the distorted elliptical tube and reducing the pitch. In a word, the length, the short axis and the pitch of the twisted elliptical tube are matched with the change of the dryness of the refrigerant in the heat exchange process of the whole evaporator, so that the whole evaporator achieves the optimal heat exchange effect, and the effects of reducing the material consumption of the heat exchange tube and reducing the filling amount of the refrigerant are achieved.
Drawings
Fig. 1 is a schematic view of an assembly structure according to a first embodiment of the present invention;
FIG. 2 is a structural diagram of a twisted oval tube of a first section of a tube according to a first embodiment of the present invention;
FIG. 3 is a structural diagram of a second twisted oval tube according to a first embodiment of the present invention;
fig. 4 is an assembly structure diagram of a second embodiment of the present invention;
fig. 5 is a structural diagram of a second segment pipe twisted elliptical pipe according to the second embodiment of the present invention.
Note: the pitch S1 of the first-stage pipe in fig. 2 represents the projection distance of the pipeline twist 360 ° on the x-axis, the pitch S2 of the second-stage pipe in fig. 3 represents the projection distance of the pipeline twist 360 ° on the x-axis, and the pitch S3 of the third-stage pipe in fig. 5 represents the projection distance of the pipeline twist 360 ° on the x-axis.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example one
As shown in fig. 1 to 3, the evaporator is a composite twisted elliptic reinforced pipe evaporator with variable pipe diameter, and comprises four first-section pipes 1, four second-section pipes 3 and seven connecting elbows 2; the number of the first-stage tubes 1 and the number of the second-stage tubes 3 can be selected according to the implementation situation, but the number of the first-stage tubes 1 accounts for 1/5-4/5 of the total number, and the number of the second-stage tubes 3 accounts for 1/5-4/5 of the total number of the stages;
each first section of pipe 1 and each second section of pipe 3 are elliptical pipes, each first section of pipe 1 and each second section of pipe 3 are twisted, the length of each second section of pipe 3 is the same as that of each first section of pipe 1, the major axis and the minor axis of the ellipse of the second section of pipe 3 are not equal to those of the ellipse of the first section of pipe 1, and the twisted pitch S2 of the second section of pipe 3 is not equal to the twisted pitch S1 of the first section of pipe 1; the ratio of the major axis of the ellipse of the second section of pipe 3 to the major axis of the ellipse of the first section of pipe 1 is 1.5, and the ratio can be selected from the range of 1.1-2.0, such as 1.1, 1.3 or 2.0; the ratio of the minor axis of the ellipse of the second section of tube 3 to the minor axis of the ellipse of the first section of tube 1 is 1.5, and the ratio can also be selected from the range of 1.1-2.0, such as 1.1, 1.3 or 2.0; the ratio of the twisted pitch S2 of the second tube 3 to the twisted pitch S1 of the first tube 1 is 0.7, and the ratio can be selected from the range of 0.5-0.9, such as 0.5, 0.6 or 0.9.
Four first section pipes 1 establish ties the intercommunication through three connecting bend 2 and form first section nest of tubes, and four second section pipes 3 establish ties the intercommunication through three connecting bend 2 and form second section nest of tubes, and first section nest of tubes and second section nest of tubes establish ties the intercommunication through a connecting bend 2 and constitute the utility model discloses an evaporator, connecting bend 2's quantity should suit with first section pipe 1 and second section pipe 3's quantity.
During operation, refrigerant enters from the inlet of the first section of the first tube 1 at the initial end and flows out from the outlet of the second section of the last tube 3; the refrigerant evaporates in the first-stage tube 1, the dryness of the refrigerant increases in the direction of refrigerant flow, and then enters the second-stage tube 3 to continue evaporating and become a refrigerant gas entirely.
Example two
As shown in fig. 2 to 5, the evaporator is a variable-diameter composite twisted elliptic reinforced pipe evaporator, which comprises three first-section pipes 1, three second-section pipes 3, two third-section pipes 4 and seven connecting elbows 2; the lengths of the first section of pipe 1, the second section of pipe 3 and the third section of pipe 4 are equal; the number of the first-stage tubes 1, the second-stage tubes 3 and the third-stage tubes 4 can be selected according to actual conditions, but the number of the first-stage tubes 1 is 1/10-2/3 of the total number, the number of the second-stage tubes 3 is 1/10-2/3 of the total number, and the number of the third-stage tubes 4 is 1/10-2/3 of the total number.
Each first section of pipe 1, each second section of pipe 3 and each third section of pipe 4 are elliptical pipes, and each first section of pipe 1, each second section of pipe 3 and each third section of pipe 4 are twisted; the major axis and the minor axis of the ellipse of the second tube 3 are not equal to the major axis and the minor axis of the ellipse of the first tube 1, the ratio of the major axis of the ellipse of the second tube 3 to the major axis of the ellipse of the first tube 1 is 1.5, and the ratio can be selected within the range of 1.1-2.0, such as 1.1, 1.3 or 2.0; the ratio of the minor axis of the ellipse of the second section of tube 3 to the minor axis of the ellipse of the first section of tube 1 is 1.5, and the ratio can also be selected within the range of 1.1-2.0, such as 1.1, 1.3 or 2.0; the twisted pitch S2 of the second tube 3 is not equal to the twisted pitch S1 of the first tube 1, and the ratio of the twisted pitch S2 of the second tube 3 to the twisted pitch S1 of the first tube 1 is 0.7, which can be selected in the range of 0.5-0.9, such as 0.5, 0.6 or 0.9; the major axis and the minor axis of the ellipse of the third tube section 4 are not equal to the major axis and the minor axis of the ellipse of the second tube section 3, the ratio of the major axis of the ellipse of the third tube section 4 to the major axis of the ellipse of the second tube section 3 is 1.3, and the ratio can be selected within the range of 1.1-1.5, such as 1.1, 1.2 or 1.5; the ratio of the minor axis of the ellipse of the third section of tube 4 to the minor axis of the ellipse of the second section of tube 3 is 1.3, and the ratio can be selected from the range of 1.1-1.5, such as 1.1, 1.2 or 1.5; the twisted pitch S3 of the third tube segment 4 is not equal to the twisted pitch S2 of the second tube segment 3, and the ratio of the twisted pitch S3 of the third tube segment 4 to the twisted pitch S2 of the second tube segment 3 is 0.7, which can be selected in the range of 0.5-0.9, such as 0.5, 0.6, or 0.9.
Three first section pipes 1 are established ties the intercommunication through two connecting bend 2 and are formed first section nest of tubes, and three second section pipes 3 are established ties the intercommunication through two connecting bend 2 and are formed the second section nest of tubes, and two third section pipes 4 are established ties the intercommunication through a connecting bend 2 and are formed the third section nest of tubes, and first section nest of tubes, second section nest of tubes and third section nest of tubes are established ties the intercommunication through two connecting bend 2 in proper order and are formed the utility model discloses an evaporimeter, the quantity of connecting bend 2 suits with the quantity of first section pipe 1, second section pipe 3 and third section pipe 4.
In operation, refrigerant enters from the inlet of the first section of the first tube 1 at the initial end and flows out from the outlet of the third section of the last tube 4; the refrigerant is evaporated in the first section of pipe 1, the dryness of the refrigerant is increased along the flowing direction of the refrigerant, then the refrigerant enters the second section of pipe 3 to be continuously evaporated, the dryness of the refrigerant is continuously increased along the flowing direction of the refrigerant, and finally the refrigerant enters the third section of pipe 4 to be continuously evaporated and completely changed into refrigerant gas.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (4)
1. The utility model provides a become oval intensive pipe evaporator of compound distortion of pipe diameter which characterized in that includes:
two or more first-stage pipes (1); each first section of pipe (1) is an elliptical pipe, the first section of pipe (1) is in a twisted shape, and the twisted pitch of the first section of pipe (1) is S1;
two or more second-stage tubes (3); each second section of pipe (3) is an oval pipe, the second section of pipe (3) is in a twisted shape, the twisted pitch of the second section of pipe (3) is S2, the length of the second section of pipe (3) is the same as that of the first section of pipe (1), the major axis and the minor axis of the oval of the second section of pipe (3) are different from those of the oval of the first section of pipe (1), and the pitch S2 of the second section of pipe (3) is different from the pitch S1 of the first section of pipe (1); the ratio range of the major axis of the ellipse of the second section of pipe (3) to the major axis of the ellipse of the first section of pipe (1) is 1.1-2.0, and the ratio range of the minor axis of the ellipse of the second section of pipe (3) to the minor axis of the ellipse of the first section of pipe (1) is 1.1-2.0; the ratio of the pitch S2 of the second section of tubes (3) to the pitch S1 of the first section of tubes (1) is 0.5-0.9; and
more than three connecting elbows (2); two adjacent first section pipes (1) are communicated in series through connecting elbows (2) to form a first section pipe group, two adjacent second section pipes (3) are communicated in series through connecting elbows to form a second section pipe group, and the first section pipe group and the second section pipe group are communicated in series through the connecting elbows to form an evaporator.
2. The evaporator of variable-pipe-diameter composite twisted elliptic reinforced pipes according to claim 1, wherein the number of the first section of pipes (1) is 1/5-4/5 of the total number, and the number of the second section of pipes (3) is 1/5-4/5 of the total number.
3. The utility model provides a become oval intensive pipe evaporator of compound distortion of pipe diameter which characterized in that includes:
two or more first-stage pipes (1); the first section of pipe (1) is an elliptical pipe, the first section of pipe (1) is in a twisted shape, and the twisted pitch of the first section of pipe (1) is S1;
two or more second-stage tubes (3); each second section of pipe (3) is an oval pipe, the second section of pipe (3) is in a twisted shape, the twisted pitch of the second section of pipe (3) is S2, the length of the second section of pipe (3) is the same as that of the first section of pipe (1), the major axis and the minor axis of the oval of the second section of pipe (3) are different from those of the oval of the first section of pipe (1), and the pitch S2 of the second section of pipe (3) is different from the pitch S1 of the first section of pipe (1); the ratio range of the major axis of the ellipse of the second section of pipe (3) to the major axis of the ellipse of the first section of pipe (1) is 1.1-2.0, and the ratio range of the minor axis of the ellipse of the second section of pipe (3) to the minor axis of the ellipse of the first section of pipe (1) is 1.1-2.0; the ratio of the pitch S2 of the second section of tubes (3) to the pitch S1 of the first section of tubes (1) is 0.5-0.9;
two or more third-stage tubes (4); each third section of pipe (4) is an oval pipe, the third section of pipe (4) is in a twisted shape, the twisted pitch of the third section of pipe (4) is S3, the length of the third section of pipe (4) is the same as that of the second section of pipe (3), the major axis and the minor axis of the oval of the third section of pipe (4) are different from those of the oval of the second section of pipe (3), and the pitch S3 of the third section of pipe (4) is different from the pitch S2 of the second section of pipe (3); the ratio range of the major axis of the ellipse of the third section of pipe (4) to the major axis of the ellipse of the second section of pipe (3) is 1.1-1.5, and the ratio range of the minor axis of the ellipse of the third section of pipe (4) to the minor axis of the ellipse of the second section of pipe (3) is 1.1-1.5; the ratio of the pitch S3 of the third section of tubes (4) to the pitch S1 of the second section of tubes (3) is 0.5-0.9; and
more than five connecting elbows (2); two adjacent first section pipes (1) are communicated in series through connecting elbows (2) to form a first section pipe group, two adjacent second section pipes (3) are communicated in series through connecting elbows (2) to form a second section pipe group, two adjacent third section pipes (4) are communicated in series through connecting elbows (2) to form a third section pipe group, and the first section pipe group, the second section pipe group and the third section pipe group are sequentially communicated in series through connecting elbows (2) to form an evaporator.
4. The evaporator of variable-pipe-diameter composite twisted elliptic reinforced pipes according to claim 3, wherein the number of the first section of pipe (1) is 1/10-2/3 of the total number of all the pipe sections; the number of the second section of pipe (3) is 1/10-2/3 of the total number of all the pipe sections; the number of the third segment of pipe (4) is 1/10-2/3 of the total number of all the pipe segments.
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| CN202020190352.9U CN212157733U (en) | 2020-02-21 | 2020-02-21 | Variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator |
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| CN202020190352.9U CN212157733U (en) | 2020-02-21 | 2020-02-21 | Variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111156744A (en) * | 2020-02-21 | 2020-05-15 | 顺德职业技术学院 | Variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111156744A (en) * | 2020-02-21 | 2020-05-15 | 顺德职业技术学院 | Variable-pipe-diameter composite twisted elliptic reinforced pipe evaporator |
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