Balanced small-pipe-diameter heat exchanger

Abstract

The utility model discloses a balanced type small pipe diameter heat exchanger, which comprises a plurality of heat exchange fins and a heat exchange pipe coil pipe, the transverse pipe part of the heat exchange pipe coil pipe is clamped in the corresponding through holes of all the heat exchange fins, the balanced type small pipe diameter heat exchanger is characterized in that a plurality of through holes are formed on the heat exchange fins, and all the through holes are vertically arranged in three groups; the heat exchange pipe coil is composed of a plurality of transverse pipe parts and a plurality of U-shaped bent pipe parts. A main coil pipe part of the heat exchange pipe coil pipe is composed of a plurality of first bent pipe parts which are bent and extend in an S shape and a plurality of second bent pipe parts which are bent and extend in an S shape. The heat exchange pipe coil is made of thin copper pipes, so that the heat exchange coefficient of the heat exchange pipe coil is improved, the size of the heat exchange pipe coil is reduced, heat exchange fins installed on the heat exchange pipe coil can be arranged through three rows of through holes, the heat exchange pipe coil can be coiled in the three rows of through holes, the total coiling length is increased, the coiling amount is increased, and the heat exchange effect and the heat exchange efficiency of the heat exchange pipe coil are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger processing equipment technical field more specifically relates to a balanced small pipe diameter heat exchanger. BACKGROUND

[0002] The tube-fin heat exchanger is one of the earliest and most successful discoveries in the process of improving the tube heat exchanger. The tube-fin heat exchanger has compact structure and excellent heat exchange performance, and is not only suitable for the flow of single-phase fluid, but also has great value for phase change heat exchange.

[0003] At present, the tube-fin heat exchanger has gradually realized the upgrading of the fine diameter of "9.52mm-7mm-5mm". By reducing the diameter of the copper pipe in the tube-fin heat exchanger, the consumption of copper and aluminum materials and the refrigerant filling amount can be significantly reduced, thereby meeting the cost reduction needs of enterprises.

[0004] In the existing tube-fin heat exchanger, the heat exchange pipe is generally a copper pipe, and the heat exchange fin is generally an aluminum fin. For the heat exchanger, the heat exchange in the pipe generally accounts for 40% of the heat exchange capacity, and the heat exchange outside the pipe accounts for 60%. At the same time, the density and price of copper are greater than those of aluminum. However, the outer diameter of the heat exchange pipe in the existing heat exchanger is generally more than 5mm, and the use amount of copper is large. In addition, in the heat exchange performance, the heat exchange coefficient of the thin pipe is greater than that of the thick pipe. Therefore, using thin pipes to make heat exchange pipes can reduce the use amount of copper and the manufacturing cost while ensuring the heat exchange effect. However, there is no such structure at present. UTILITY MODEL CONTENTS

[0005] The utility model discloses a balanced small pipe diameter heat exchanger, which is made of thin copper pipes to make the heat exchange coefficient higher and the volume smaller. The heat exchange fins can be arranged in three rows of through holes, and the heat exchange pipe coil can be wound in the three rows of through holes to increase the total length of the winding, increase the winding amount, and greatly improve the heat exchange effect and efficiency.

[0006] The utility model discloses a balanced small pipe diameter heat exchanger, which is made of thin copper pipes to make the heat exchange coefficient higher and the volume smaller. The heat exchange fins can be arranged in three rows of through holes, and the heat exchange pipe coil can be wound in the three rows of through holes to increase the total length of the winding, increase the winding amount, and greatly improve the heat exchange effect and efficiency.

[0007] A balanced small pipe diameter heat exchanger includes multiple heat exchange fins and a heat exchange pipe coil. The transverse pipe part of the heat exchange pipe coil is clamped in the corresponding through hole of all the heat exchange fins. The heat exchange fins are formed with multiple through holes, and all the through holes are vertically arranged in three groups.

[0008] The heat exchange pipe coil is composed of multiple transverse pipe parts and multiple U-shaped bent pipe parts.

[0009] The main coil part of the heat exchange pipe coil is composed of a plurality of first bent pipe parts extending in S shape and second bent pipe parts extending in S shape.

[0010] The first bent pipe part includes vertically extending large U-shaped bent pipe parts in the partial through holes in the middle row, the upper portion of the large U-shaped bent pipe part is formed into an upper bent pipe part extending obliquely upward from the through hole in the middle row to the through hole in the front row, and the lower portion of the large U-shaped bent pipe part is formed into a lower bent pipe part extending obliquely downward from the through hole in the middle row to the through hole in the rear row.

[0011] The second bent pipe part includes vertically extending second large U-shaped bent pipe parts in the partial through holes in the middle row, the upper portion of the second large U-shaped bent pipe part is formed into a second upper bent pipe part extending obliquely upward from the through hole in the middle row to the through hole in the rear row, and the lower portion of the second large U-shaped bent pipe part is formed into a second lower bent pipe part extending obliquely downward from the through hole in the middle row to the through hole in the front row.

[0012] All the first bent pipe parts and the second bent pipe parts are arranged in an upper-to-lower manner, the feed end of the second upper bent pipe part of each second bent pipe part is connected to or formed with the discharge end of the lower bent pipe part of the first bent pipe part above, and the discharge end of the second lower bent pipe part of each second bent pipe part is connected to or formed with the feed end of the upper bent pipe part of the first bent pipe part below.

[0013] The heat exchange pipe coil includes a top bent pipe part, a main coil part and a bottom bent pipe part arranged in an upper-to-lower manner.

[0014] The top bent pipe part includes top large U-shaped bent pipe parts vertically extending in the partial through holes in the middle row, the upper portion of the top large U-shaped bent pipe part is formed into a top upper bent pipe part extending obliquely upward from the through hole in the middle row to the through hole in the front row, and the lower portion of the top large U-shaped bent pipe part is formed into a bottom lower bent pipe part extending obliquely downward from the through hole in the middle row to the through hole in the rear row.

[0015] The feed end of the top upper bent pipe part of the top bent pipe part extends out of the outer side wall of the leftmost heat exchange fin, and the discharge end of the bottom lower bent pipe part of the top bent pipe part is connected to or formed with the feed end of the upper bent pipe part of the first bent pipe part at the top.

[0016] The bottom bent pipe part includes S-shaped bent pipe parts vertically extending in the partial through holes in the middle row, the upper portion of the S-shaped bent pipe part is formed into a bottom upper bent pipe part extending obliquely upward from the through hole in the middle row to the through hole in the rear row, and the discharge end of the S-shaped bent pipe part extends out of the outer side wall of the leftmost heat exchange fin.

[0017] The bottom of the bottom bent pipe section is communicated with or formed together with the discharge end of the lower bent pipe section of the first bent pipe section at the bottom.

[0018] The sleeve body part horizontally extends leftward or rightward at the inner side wall of the through hole of the heat exchange fin, and the transverse pipe part is clamped on the inner side wall of the corresponding sleeve body part, and the outer side wall is tightly attached to the inner side wall of the corresponding sleeve body part.

[0019] The prominent effect of the utility model is:

[0020] Compared with the prior art, the heat exchange pipe coil is made of 4mm thin copper pipe, so that the heat exchange coefficient is improved, and the volume is reduced, so that the installed heat exchange fin can be provided with three rows of through holes, so that the heat exchange pipe coil can be coiled in the three rows of through holes, the total length of coiling is increased, the coiling amount is increased, the heat exchange effect and the heat exchange efficiency are greatly improved, that is, the total length of the heat exchange pipe coil coiling is increased without changing the volume, and the heat exchange amount is improved;

[0021] Secondly, the top bent pipe section, the main pipe coil section and the bottom bent pipe section arranged from top to bottom are uniformly distributed in the whole heat exchanger, so that the heat exchange efficiency and the heat exchange effect of the whole surface are balanced and stable, and balanced heat exchange is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a simple schematic diagram of the coiling mode of the heat exchange pipe coil of the prior art heat exchanger;

[0023] Figure 2 is a schematic diagram of a local structure of the utility model;

[0024] Figure 3 is a schematic diagram of a local structure of Figure 2 at different angles;

[0025] Figure 4 is a schematic diagram of a local structure of the heat exchange pipe coil of the utility model;

[0026] Figure 5 is a schematic diagram of a local structure of the heat exchange pipe coil;

[0027] Figure 6 is a schematic diagram of a local structure of Figure 5 at different angles;

[0028] Figure 7 is a schematic diagram of a local structure between adjacent heat exchange fins;

[0029] Figure 8 is a front view of the utility model;

[0030] Figure 9The utility model discloses a heat exchanger and prior art under the same working condition test data comparison chart. DETAILED DESCRIPTION

[0031] Embodiment, see as Figures 2 to 9 The utility model discloses a balanced small pipe diameter heat exchanger, including a plurality of heat exchange fins 10 and heat exchange pipe coil 20, the transverse pipe portion of heat exchange pipe coil 20 is clamped in the corresponding through -hole of all heat exchange fins 10, a plurality of through -holes are formed on the heat exchange fin 10, and all through -holes are vertically arranged in three groups, all through -holes are vertically arranged in three groups, and the distance between every adjacent two through -holes in each column of through -holes is equal, all through -holes of the front column are aligned with all through -holes of the rear column, and the through -hole of the middle column is lower than the horizontal position of the corresponding through -hole of the front column or the rear column, and the reduced distance is half of the distance between the upper and lower adjacent two through -holes, that is, the three columns of through -holes are staggered.

[0032] The heat exchange pipe coil 20 is composed of a plurality of transverse pipe portions and a plurality of U-shaped bent pipe portions;

[0033] The main pipe portion 21 of the heat exchange pipe coil 20 is composed of a plurality of S-shaped bent first bent pipe portions 211 and S-shaped bent second bent pipe portions 212;

[0034] The first bent pipe portion 211 includes vertically extended large U-shaped bent pipe portions 2111 in the through -hole of the middle column, and the upper bent pipe portion 2112 formed in the upper portion of the large U-shaped bent pipe portion 2111 extends obliquely upward to the through -hole of the front column from the through -hole of the middle column, and the lower bent pipe portion 2113 formed in the lower portion of the large U-shaped bent pipe portion 2111 extends obliquely downward to the through -hole of the rear column from the through -hole of the middle column;

[0035] The second bent pipe portion 212 includes vertically extended second large U-shaped bent pipe portions 2121 in the through -hole of the middle column, and the second upper bent pipe portion 2122 formed in the upper portion of the second large U-shaped bent pipe portion 2121 extends obliquely upward to the through -hole of the rear column from the through -hole of the middle column, and the second lower bent pipe portion 2123 formed in the lower portion of the second large U-shaped bent pipe portion 2121 extends obliquely downward to the through -hole of the front column from the through -hole of the middle column;

[0036] All the first bent pipe sections 211 and the second bent pipe sections 212 are arranged in an up-down interval, the feed end of the second upper bent pipe section 2122 of each second bent pipe section 212 is connected or formed with the discharge end of the lower bent pipe section 2113 of the upper first bent pipe section 211 adjacent thereto, and the discharge end of the second lower bent pipe section 2123 of each second bent pipe section 212 is connected or formed with the feed end of the upper bent pipe section 2112 of the lower first bent pipe section 211 adjacent thereto. Among them, the topmost end of the main coil section 21 is a first bent pipe section 211, and the bottommost end is also a first bent pipe section 211.

[0037] Further, the heat exchange pipe coil 20 comprises a top bent pipe section 22, a main coil section 21 and a bottom bent pipe section 23 arranged from top to bottom.

[0038] Further, the top bent pipe section 22 comprises vertically extending top large U-shaped bent pipe sections 221 in the partial through holes in the middle row, the top upper bent pipe sections 222 formed on the upper part of the top large U-shaped bent pipe sections 221 extend obliquely upward to the through holes in the front row from the through holes in the middle row, and the bottom lower bent pipe sections 223 formed on the lower part of the top large U-shaped bent pipe sections 221 extend obliquely downward to the through holes in the rear row from the through holes in the middle row.

[0039] The feed end of the top upper bent pipe sections 222 of the top bent pipe section 22 extends out of the outer side wall of the leftmost heat exchange fin 10, and the discharge end of the bottom lower bent pipe sections 223 of the top bent pipe section 22 is connected or formed with the feed end of the upper bent pipe section 2112 of the topmost first bent pipe section 211.

[0040] The bottom bent pipe section 23 comprises S-shaped bent extension pipe sections 231 vertically extending in the partial through holes in the middle row, the bottom upper bent pipe sections 232 formed on the upper part of the S-shaped bent extension pipe sections 231 extend obliquely upward to the through holes in the rear row from the through holes in the middle row, and the discharge end of the S-shaped bent extension pipe sections 231 extends out of the outer side wall of the leftmost heat exchange fin 10.

[0041] The feed end of the bottom upper bent pipe sections 232 of the bottom bent pipe section 23 is connected or formed with the discharge end of the lower bent pipe section 2113 of the bottommost first bent pipe section 211.

[0042] The top bent pipe section 22, the main coil section 21 and the bottom bent pipe section 23 are all composed of a plurality of transverse pipe sections and a plurality of U-shaped bent pipe sections.

[0043] The two ends of the U-shaped bent pipe section are connected or formed with the end portions of the corresponding two transverse pipe sections.

[0044] Further, the left or right horizontally extending sleeve part 11 is formed on the inner side wall of the through hole of the heat exchange fin 10, and the transverse tube part is clamped on the inner side wall of the corresponding sleeve part 11, and the outer side wall is tightly attached to the inner side wall of the corresponding sleeve part 11.

[0045] In each of the two adjacent heat exchange fins 10, the right end of the sleeve part 11 of the left heat exchange fin 10 is pressed against the left end surface of the adjacent right heat exchange fin 10, or the left end surface of the sleeve part 11 of the right heat exchange fin 10 is pressed against the right end surface of the left heat exchange fin 10 (in this embodiment, the left end surface of the sleeve part 11 of the right heat exchange fin 10 is pressed against the right end surface of the left heat exchange fin 10).

[0046] Further, the heat exchange tube coil 20 is made of a tube body with a tube diameter (outer diameter) of 4mm to 4.9mm. In this embodiment, the heat exchange tube coil 20 has a tube diameter of 4mm.

[0047] Further, the heat exchange tube coil 20 is a copper tube, and the heat exchange fin 10 is an aluminum fin.

[0048] Further, the left and right parts of the heat exchange tube coil 20 are respectively provided with left and right support frames 30 and 40, and the left and right parts of the transverse tube part of the heat exchange tube coil 20 are respectively clamped on the inner side walls of the corresponding through holes of the vertical plates of the corresponding left and right support frames 30 and 40, and the U-shaped bent tube part is outside the vertical plate of the corresponding left or right support frame 30 or 40.

[0049] The upper and lower parts of the left side wall of the left support connecting frame 30 are respectively fixedly connected with bent plates 1, the feed end of the top bent tube part 222 of the top bent tube part 22 extends outside the vertical plate of the left support connecting frame 30 and is fixed on the upper bent plate 1, and the discharge end of the S-shaped bent extension tube part 231 of the bottom bent tube part 23 extends outside the vertical plate of the left support connecting frame 30 and is fixed on the lower bent plate 1.

[0050] In this embodiment, the heat exchange tube coil 20 has a tube diameter of 4mm, so that the amount of copper used is lower than that of the existing heat exchange tube coil with a tube diameter of 5mm in the same length, reducing the manufacturing cost, and the heat exchange tube coil 20 is made of a copper tube with a diameter of 4mm, which improves the heat exchange coefficient, and the volume is reduced, so that the heat exchange fin 10 can be installed in three rows of through holes, so that the heat exchange tube coil 20 can be wound in three rows of through holes, increasing the total length of the winding, increasing the winding amount, greatly improving the heat exchange effect and efficiency, that is, without changing the volume, the total length of the heat exchange tube coil winding 20 is increased, and the heat exchange amount is improved.

[0051] As shown in FIG. 1, the heat exchange tube coil 20 is arranged in the heat exchange fin 10, and the heat exchange fin 10 is arranged in the heat exchange tube coil 20. Figure 8The present embodiment is shown in Figure 1 The detection data of the heat exchanger of the same size made of the copper pipe with a pipe diameter of 5 mm is shown, and the heat exchange capacity of the present embodiment can be improved compared with the existing heat exchanger.

[0052] Finally, the above embodiments are only used to illustrate the present application, and are not limited to the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions also belong to the scope of the present application, and the patent protection scope of the present application should be defined by the claims.

Claims

1. An equalizing type small diameter heat exchanger comprising a plurality of heat exchange fins (10) and heat exchange tube coils (20), a transverse tube portion of the heat exchange tube coils (20) being fitted in corresponding through holes of all the heat exchange fins (10), characterized by: The heat exchange fin (10) is formed with a plurality of through holes, all of which are vertically arranged in three groups; The heat exchange pipe coil (20) is composed of a plurality of transverse pipe sections and a plurality of U-shaped bent pipe sections; The main pipe section (21) of the heat exchange pipe coil (20) is composed of a plurality of first bent pipe sections (211) extending in S-shaped bending and second bent pipe sections (212) extending in S-shaped bending; The first bent pipe section (211) includes a vertically extending large U-shaped bent pipe section (2111) in the middle column of partial through holes, an upper bent pipe section (2112) formed at the upper part of the large U-shaped bent pipe section (2111) extends obliquely upward from the middle column of through holes to the front column of through holes, and a lower bent pipe section (2113) formed at the lower part of the large U-shaped bent pipe section (2111) extends obliquely downward from the middle column of through holes to the rear column of through holes; The second bent pipe section (212) includes a vertically extending second large U-shaped bent pipe section (2121) in the middle column of partial through holes, a second upper bent pipe section (2122) formed at the upper part of the second large U-shaped bent pipe section (2121) extends obliquely upward from the middle column of through holes to the rear column of through holes, and a second lower bent pipe section (2123) formed at the lower part of the second large U-shaped bent pipe section (2121) extends obliquely downward from the middle column of through holes to the front column of through holes; All of the first bent pipe sections (211) and the second bent pipe sections (212) are arranged in a top-to-bottom manner, the feed end of the second upper bent pipe section (2122) of each second bent pipe section (212) is connected or formed with the discharge end of the lower bent pipe section (2113) of the adjacent upper first bent pipe section (211), and the discharge end of the second lower bent pipe section (2123) of each second bent pipe section (212) is connected or formed with the feed end of the upper bent pipe section (2112) of the adjacent lower first bent pipe section (211).

2. The balanced type small diameter heat exchanger according to claim 1, characterized in that: The heat exchange pipe coil (20) includes a top bent pipe section (22), a main pipe section (21), and a bottom bent pipe section (23) arranged in a top-to-bottom manner.

3. An equalizing type small diameter heat exchanger according to claim 2, characterized in that: The top bent pipe section (22) includes a top large U-shaped bent pipe section (221) vertically extending in the middle column of partial through holes, a top upper bent pipe section (222) formed at the upper part of the top large U-shaped bent pipe section (221) extends obliquely upward from the middle column of through holes to the front column of through holes, and a bottom lower bent pipe section (223) formed at the lower part of the top large U-shaped bent pipe section (221) extends obliquely downward from the middle column of through holes to the rear column of through holes; The feed end of the top upper bent pipe section (222) of the top bent pipe section (22) extends out of the outer side wall of the leftmost heat exchange fin (10), and the discharge end of the bottom lower bent pipe section (223) of the top bent pipe section (22) is connected or formed with the feed end of the upper bent pipe section (2112) of the topmost first bent pipe section (211). The bottom bent pipe part (23) comprises vertically extending S-shaped bent extension pipe parts (231) in the middle row of partial through holes, the upper part of the S-shaped bent extension pipe part (231) is shaped into a bottom upper bent pipe part (232) extending obliquely upward from the middle row of through holes to the rear row of through holes, and the discharge end of the S-shaped bent extension pipe part (231) extends out of the outer side wall of the leftmost heat exchange fin (10); The inlet end of the bottom upper bent pipe part (232) of the bottom bent pipe part (23) is connected to or shaped with the discharge end of the lower bent pipe part (2113) of the first bent pipe part (211) at the bottom.

4. The balanced type small diameter heat exchanger according to claim 2, characterized in that: The top bent pipe part (22), the main coil pipe part (21) and the bottom bent pipe part (23) are all composed of a plurality of transverse pipe parts and a plurality of U-shaped bent pipe parts. The two ends of the U-shaped bent pipe part are connected to or shaped with the ends of the corresponding two transverse pipe parts.

5. The balanced type small diameter heat exchanger according to claim 1, characterized in that: The left or right horizontally extending sleeve part (11) is shaped at the inner side wall of the through hole of the heat exchange fin (10), and the transverse pipe part is clamped on the inner side wall of the corresponding sleeve part (11) with the outer side wall closely attached to the inner side wall of the corresponding sleeve part (11). In each of the two adjacent heat exchange fins (10), the right end of the sleeve part (11) of the left heat exchange fin (10) is pressed against the left end surface of the adjacent right heat exchange fin (10), or the left end surface of the sleeve part (11) of the right heat exchange fin (10) is pressed against the right end surface of the left heat exchange fin (10).

6. An equalizing type small diameter heat exchanger according to claim 1, characterized in that: The heat exchange pipe coil (20) is made of a pipe body with a pipe diameter of 4mm to 4.9mm.

7. An equalizing type small diameter heat exchanger according to claim 1, characterized in that: The heat exchange pipe coil (20) is a copper pipe, and the heat exchange fin (10) is an aluminum fin.

8. An equalizing type small diameter heat exchanger according to claim 1, characterized in that: The left support frame (30) and the right support frame (40) are respectively installed on the left part and the right part of the heat exchange pipe coil (20), the left part and the right part of the transverse pipe part of the heat exchange pipe coil (20) are respectively clamped on the inner side wall of the corresponding through hole of the vertical plate of the corresponding left support frame (30) and right support frame (40), and the U-shaped bent pipe part is located outside the vertical plate of the corresponding left support frame (30) or right support frame (40).

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