KR20160148010A - Bended heat exchanger - Google Patents

Abstract

The curved heat exchanger (10) includes a first header pipe (101) and a second header pipe (102); A plurality of flat tubes 103 connected to the first header pipe 101 and the second header pipe 102 at opposite ends thereof and spaced from each other along the axial direction of the first header pipe 101 and the second header pipe 102; And a pin (104) provided between the adjacent flat tubes (103) and extending in a wave shape along the longitudinal direction of the flat tube (103), wherein a thickness of the fin (104) is FT, The outer diameter of the pipe 101 and the second header pipe 102 is OD and the relatively large wall thickness is T and the width of the flat tube 103 is W and the arc radius of the pin 104 is FR , And the height of the pin 104 is FH, where 0.01? (100 x FT x FR x T) / (FH x OD)? 9.

Description

{BENDED HEAT EXCHANGER}

The present invention relates to a heat exchanger, and more particularly to a curved parallel flow heat exchanger.

Heat exchangers, for example, parallel-flow heat exchangers (e.g., multi-channel heat exchangers) are widely used in cooling systems. For some applications, the heat exchanger should be bent, ie the header pipe of the heat exchanger should be bent. However, in the case of bending the heat exchanger along the longitudinal direction of the header pipe, if the curvature is not appropriate, the heat exchange function of the heat exchanger may be adversely affected or the application requirement can not be reached. have.

The present application is based on discoveries made by the inventors on the following facts and problems.

When the heat exchanger is bent along the longitudinal direction of the header pipe, the application requirement can not be satisfied if the radius of curvature is too large and the mounting space of the heat exchanger is limited. If the radius of curvature is too small, the flattened tube of the heat exchanger is deformed and tearing of the fin is created, which affects the heat exchange efficiency, which results in a drop in function and even leakage of the flattening tube and disposal of the heat exchanger. In addition, excessive press deformation of the header pipe increases the pressure loss of the refrigerant in the header pipe and lowers the function of the heat exchanger. Thus, the inventors have found that controlling the curvature parameters is a factor that affects the function, reliability, and convenience of installation applications of the curved heat exchanger.

To this end, it is an object of the present invention to design a structural parameter of a header pipe, a flat pipe and a fin, and to control the curvature radius of the header pipe so that the heat exchanger does not tear the pin outside the curvature when curving along the header pipe, It is an object of the present invention to provide a curved heat exchanger capable of realizing that the deformation of the header pipe after the deformation of the header pipe is small and sufficient rupture strength is achieved.

A curved heat exchanger according to an embodiment of the present invention includes a first header pipe and a second header pipe, a plurality of flat tubes, and a fin, wherein each one of the first header pipe and the second header pipe includes at least one curved And a straight line section adjacent to the curved section, wherein a curved section of the first header pipe and a curved section of the second header pipe correspond to each other. Wherein both ends of the flat pipe are connected to the first header pipe and the second header pipe respectively and a plurality of the flat pipes are installed to be spaced from each other along the axial direction of the first header pipe and the second header pipe, The pin is installed between adjacent flat tubes and extends in a wave-like shape along the longitudinal direction of the flat tube, and the fin includes a flat and straight section and a circular section connected between flat and straight sections. The thickness of the fin is FT, and the first header pipe and the second header pipe have different outer diameters, wherein a relatively large outer diameter of the outer diameters of the first header pipe and the second header pipe is OD. The first header pipe and the second header pipe have different wall thicknesses, wherein a relatively large wall thickness of the first and second header pipes is T. The width of the flat tube is W, the arc radius of the fin is FR, and the height of the fin is FH, where 0.01? (100 x FT x FR x T) / (FH x OD)?

The curved heat exchanger of another embodiment according to the present invention includes a first header pipe and a second header pipe, a plurality of flat tubes, and a fin, wherein each one of the first header pipe and the second header pipe includes at least one A curved section of the first header pipe and a curved section of the second header pipe correspond to each other. Both ends of the flat pipe are connected to the first header pipe and the second header pipe, respectively, and a plurality of the flat pipes are installed to be spaced from each other along the axial direction of the first header pipe and the second header pipe. Wherein the pin is disposed between adjacent flattened tubes and the pin extends in a wave-like shape along the length of the flattened tube, the pin includes a flat and straight section and a circular section connected between flat and straight sections Lt; / RTI > The thickness of the fin is FT, the first header pipe and the second header pipe have the same outer diameter, and the outer diameters of the first header pipe and the second header pipe are OD. The first header pipe and the second header pipe have the same wall thickness, and the wall thickness of the first header pipe and the second header pipe is T. The width of the flat tube is W, the arc radius of the fin is FR, and the height of the fin is FH, where 0.01? (100 x FT x FR x T) / (FH x OD)?

The thickness FT of the pin, the angle FR of the top of the pin, and the height FH of the pin produce a pronounced tensile stress on the tensile strength of the pin at the time of bending. If the tensile stress is set to Sfin and Sfin exceeds the yield strength sigma s of the weld portion of the pin and the flat tube, the pin easily separates from the flat tube and even the pin ruptures. On the other hand, the wall thickness T and outer diameter OD of the header pipe generate significant curved stress when curved. If the curvature stress is set to Shd, and if Shd exceeds the tensile strength? S of the header pipe, the header pipe is ineffective and extinguished under constant pressure conditions.

Through the experiments under different curvature radius conditions, the relative stresses Sfin / σs on the pin and the relative tensile stresses Shd / σb on the header pipe under the application conditions of different curvature radii R, FR × T) / (FH × OD). Here, the relative stress Sfin /? S on the pin decreases as the complex parameter increases, rises rapidly in the state of being reduced to close to zero, and decreases universally as the radius of curvature R increases. The relative tensile stress Shd / [sigma] b on the header pipe first decreases as the composite parameter increases (the relative strength of the header pipe is relatively low if the thickness of the header pipe is insufficient) and then gradually increases If the thickness is relatively large, the deformation stress of the curvature increases.

In the actual curving process, a conventional copper pipe fin type heat exchanger of an air conditioner usually has a curvature radius R of 50 mm or more. (100 × FT × FR × T) / (FH × OD) is set to 0.01 under the condition that the relative stress Sfin / σs and the relative tensile stress Shd / σb should be smaller than 1 so as not to cause the curvature strength to be lost. , And the upper limit value is set to 9, respectively. Through the determination of the above range, the microchannel heat exchanger does not cause a sharp pin break, a deformation of the header pipe, or a burst failure when the header pipe is bent.

The curved heat exchanger is bent along the longitudinal direction of the first header pipe and the second header pipe when the relationship of 0.01? (100 x FT x FR x T) / (FH x OD)? 9 is satisfied , It is possible to ensure that the flat tube is not torn without being torn by the pin, and the core can be ensured to have a sufficient burst strength. Further, it is possible to limit the variation of the heat exchange function of the curved heat exchanger to 4% or less (compared with before the curved heat exchanger is curved), to avoid a clear charging imbalance, and to optimize the cooling water drainage function of the curved heat exchanger can do.

Therefore, the curved heat exchanger according to the embodiment of the present invention is advantageous in that the structure is rational, the structure is stable, the heat exchange efficiency is high, the heat exchange function is good, the reliability is high, the application is convenient, and the drainage function is good have.

In addition, the curved heat exchanger according to the embodiment of the present invention has the following additional technical features.

According to one embodiment of the present invention, 0.0004? (FT x FR) / (FH x OD)? 0.59. As a result, the fin is not torn, the flat tube is not deformed, the core is provided with sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger can be further improved.

According to one embodiment of the present invention, 0.02? (FT x FR) / FH? 6. As a result, the fin is not torn, the flat tube is not deformed, the core is provided with sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger can be further improved.

According to one embodiment of the present invention, 0.002? F / FH? 0.04. As a result, the fin is not torn, the flat tube is not deformed, the core is provided with sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger can be further improved.

According to one embodiment of the present invention, 0.0061? FR / FH? 0.6. As a result, the fin is not torn, the flat tube is not deformed, the core is provided with sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger can be further improved.

According to one embodiment of the present invention, 0.04? T / OD? 0.25. As a result, the fin is not torn, the flat tube is not deformed, the core is provided with sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger can be further improved.

According to one embodiment of the present invention, 0.0005? F / OD? 0.015. As a result, the fin is not torn, the flat tube is not deformed, the core is provided with sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger can be further improved.

According to one embodiment of the present invention, 0.0016? FR / OD? 0.4. As a result, the fin is not torn, the flat tube is not deformed, the core is provided with sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger can be further improved.

According to one embodiment of the present invention, 0.05? FH / OD? 2. As a result, the fin is not torn, the flat tube is not deformed, the core is provided with sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger can be further improved.

According to an embodiment of the present invention, the curved heat exchanger is C type or L type.

The curved heat exchanger according to the embodiment of the present invention is advantageous in that the structure is rational, the structure is stable, the heat exchange efficiency is high, the heat exchanging function is good, the reliability is high, the mounting application is convenient, and the drainage function is good.

1 is a perspective view of a curved heat exchanger according to an embodiment of the present invention.
2 is a schematic view of a curved heat exchanger before curving according to an embodiment of the present invention.
3 is a schematic view of a curved header pipe of a curved heat exchanger according to an embodiment of the present invention.
4 is a schematic view of a header pipe and a flat pipe of a curved heat exchanger according to an embodiment of the present invention.
5 is a schematic view of a fin of a curved heat exchanger according to an embodiment of the present invention.
Figure 6 is a graph of the relative stress on the pin and the relative tensile stress on the first and second header pipes under different curvature radii.

Hereinafter, embodiments of the present invention will be described in detail. The embodiments described with reference to the drawings are illustrative and the aim is to interpret the invention and should not be construed as limiting the invention.

Hereinafter, a curved heat exchanger 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 to 5, a curved heat exchanger 10 according to an embodiment of the present invention includes a first header pipe 101, a second header pipe 102, a fin 104, And a pipe (103).

Each one of the first header pipe 101 and the second header pipe 102 has at least one curved section 1011 and a straight section 1012 adjacent to the curved section 1011. The curved section 1011 of the first header pipe 101 and the curved section 1011 of the second header pipe 102 correspond to each other. Both ends of the flat pipe 103 are connected to the first header pipe 101 and the second header pipe 102 respectively and the plurality of flat pipes 103 are connected to the first header pipe 101 and the second header pipe 102 As shown in Fig. The pins 104 are installed between adjacent flat tubes 103 and the pins 104 are formed in a wave shape extending along the longitudinal direction of the flat tube 103 and the pins 104 are flat and straight Section 1041 and a circular section 1042 connected between the flat and straight sections 1041. [

Here, the thickness of the fin 104 is FT, and the first header pipe 101 and the second header pipe 102 have different diameters, and the thickness of the first header pipe 101 and the second header pipe 102 A relatively large outer diameter of the outer diameter may be an OD. Alternatively, the first header pipe 101 and the second header pipe 102 may have the same outer diameter and both outer diameters may be OD.

The first header pipe 101 and the second header pipe 102 have different wall thicknesses and the relatively large wall thickness of the first header pipe 101 and the second header pipe 102 may be T . Alternatively, the first header pipe 101 and the second header pipe 102 may have the same wall thickness, and both wall thicknesses may be T. The width of the flat tube 103 is W, the arc radius of the pin 104 is FR, and the height of the fin 104 is FH, where 0.01? (100 x FT x FR x T) / (FH x OD) 9.

As can be understood, the first header pipe 101 and the second header pipe 102 may have the same outer diameter OD and different outer diameters as described above. When the first header pipe 101 and the second header pipe 102 have different outer diameters, the outer diameters of the outer diameters of the first header pipe 101 and the second header pipe 102 are OD. The first header pipe 101 and the second header pipe 102 have the same wall thickness T and may have different wall thicknesses. If the first header pipe 101 and the second header pipe 102 have different wall thicknesses, a relatively large wall thickness among the wall thicknesses of the first header pipe 101 and the second header pipe 102 is T . According to the inventor's discovery, when the first header pipe 101 and the second header pipe 102 have different outer diameters and wall thicknesses, the header pipe having a relatively large outer diameter and / or a relatively large wall thickness is relatively It is difficult to bend, and the influence of curvature is obvious. Of course, in an embodiment of the present invention, the first header pipe 101 and the second header pipe 102 may have the same outer diameter and wall thickness, and the first header pipe 101 and the second header pipe 102 The outer diameter OD may be the outer diameter of the header pipe of either the first header pipe 101 or the second header pipe 102 and the wall thickness T may be the outer diameter of the first header pipe 101 101 and the second header pipe 102. In this case,

Through the inventor's in-depth research and creative labor, I discovered the following facts.

When the thickness of the core (width W of the flat tube 103) is determined and then the curvature radius R is decreased, the burst strength of the entire core is lowered. The wall thicknesses of the first header pipe 101 and the second header pipe 102 are increased (the outer diameters of the first header pipe 101 and the second header pipe 102 are not changed) The wall thicknesses of the first header pipe 101 and the second header pipe 102 are not changed (the wall thicknesses of the first header pipe 101 and the second header pipe 102 are not changed) can be satisfied. However, increasing the wall thickness of the first header pipe 101 and the second header pipe 102 not only increases the cost, but also reduces the internal volume of the first header pipe 101 and the second header pipe 102 . In the heat pump system using the curved heat exchanger 10 on the outdoor side, there is a clear difference from the internal volume of the indoor unit. When the internal volume of the first header pipe 101 and the second header pipe 102 decreases The equipment set may experience an imbalance in the charging function during cooling and heating operations.

On the other hand, in the design of the pin 104, after the first header pipe 101 and the second header pipe 102 are bent, the arc at the top of the pin 104 may cause a tensile force after bending, The larger the arc radius at the top of the pin 104, the more tensile can occur, thereby avoiding the tearing at the weld location due to the excessive tensile force of the pin 104, which withstands the greater curvature stress. However, an excessively large arc radius is not easy to discharge because the cooling water accumulates at the arc position due to the action of the surface tension and flows out of the fin 104. And, as the arc radius at the top of the pin 104 increases, the risk of sinking after pin 104 is also increased.

In the case where the strength of the fin 104 is directly proportional to the thickness of the fin 104, the relatively thick pin 104 is resistant to a larger curvature stress, so that the curved flat tube 103 is easily deformed Do not. However, an increase in the thickness of the fins 104 not only increases the cost of the curved heat exchanger 10, but also increases the resistance to ventilation, so that the facility set function can be degraded.

The height of the pin 104 also affects the curvature function and the height of the pin 104 is too high and the greater the spacing of the flat tube 103 the greater the distance between the first header pipe 101 and the second header pipe 101 The supporting force for the first header pipe 101 and the second header pipe 102 is more easily deformed, and the curved first header pipe 101 and the second header pipe 102 are more easily deformed. The lower the height of the pin 104, the greater the ventilation resistance.

The thickness FT of the pin 104, the arc angle FR at the top of the pin 104, and the height FH of the pin 104 produce a pronounced tensile stress on the tensile force of the pin 104 upon bending. When the tensile stress is set to Sfin and when Sfin exceeds the yield strength sigma s of the welded portion of the pin 104 and the flat tube 103, the pin 104 is easily separated from the flat tube 103, (104) is ruptured. On the other hand, the wall thickness T and the outer diameter OD of the first header pipe 101 and the second header pipe 102 generate a significant curved stress when curved. When the curvature stress is set to Shd and the Shd exceeds the tensile strength? B of the first header pipe 101 and the second header pipe 102, the first header pipe 101 and the second header pipe 102 have an effective And is extinguished under constant pressure conditions.

Under the conditions of different curvature radii R, the relative stresses Sfin / s on the fins 104 and the relative stresses on the first header pipe 101 and the second header pipe 102 The tensile stress Shd / sigma b has a constant change relationship with the composite parameter (100 x FT x FR x T) / (F H x OD) of the pin 104, the first header pipe 101 and the second header pipe 102 . As shown in Fig. 6, the relative stress Sfin / s on the pin 104 decreases as the complex parameter increases, rises rapidly in a situation where it decreases to close to 0, and decreases as the radius of curvature R increases do. The relative tensile stress Shd / σb on the first header pipe 101 and the second header pipe 102 decreases first as the complex parameter increases (first header pipe 101 and second header pipe 102) (If the relative wall thickness is relatively thin, the strength is not sufficient) and then gradually increases (when the relative wall thicknesses of the first header pipe 101 and the second header pipe 102 are relatively large, box).

In the actual curving process, a conventional copper pipe fin type heat exchanger of an air conditioner usually has a curvature radius R of 50 mm or more. (100 × FT × FR × T) / (FH × OD) is set to 0.01 under the condition that the relative stress Sfin / σs and the relative tensile stress Shd / σb should be smaller than 1 so as not to cause the curvature strength to be lost. , And the upper limit value is set to 9, respectively. Through the determination of the above range, the curved heat exchanger 10 does not cause a sharp tear of the pin, deformation of the header pipe, or rupture ineffectiveness when the first header pipe 101 and the second header pipe 102 are bent .

The curved heat exchanger 10 is connected to the first header pipe 101 and the second header pipe 101 when the relationship of 0.01? (100 x FT x FR x T) / (FH x OD)? 9 is satisfied. It is possible to ensure that the flattened pipe 103 is not deformed without tearing the pin 104 after the bending along the longitudinal direction of the two header pipes 102 and also ensuring that the cores have sufficient rupture strength . Further, the change of the heat exchange function of the curved heat exchanger 10 can be limited to within 4% (compared with that before the curved heat exchanger 10 is curved), and a clear charging imbalance does not occur, and the curved heat exchanger 10 ) Can also be optimized.

Therefore, the curved heat exchanger 10 according to the embodiment of the present invention has a rational structure, a stable structure, a high heat exchange efficiency, a good heat exchange function, a high reliability, a convenient installation application, There are advantages such as good.

Specifically, the axial directions of the first header pipe 101 and the second header pipe 102 may be the longitudinal direction of the first header pipe 101 and the second header pipe 102.

The thickness FT of the pin 104, the relatively large OD between the outer diameters of the first header pipe 101 and the second header pipe 102, the thickness of the first header pipe 101 and the second header pipe 102 (100 x FT x (mm)) when the length units of the relatively large wall thickness T, the width W of the flat tube 103, the arc radius FR of the pin 104, and the height FH of the pin 104 are both mm, FR × T) / (FH × OD) ≦ 9 mm.

As shown in Figure 1, in some embodiments of the present invention, the curved heat exchanger 10 may be C-shaped. In other words, the curved heat exchanger 10 is bent three times along the longitudinal direction of the first header pipe 101 and the second header pipe 102. In other words, each of the first header pipe 101 and the second header pipe 102 includes three curved sections 1011 and four linear sections 1012, and each curved section 1011 includes adjacent curved sections 1011, And is located between two rectilinear sections 1012.

The curved heat exchanger 10 may also be of the L type.

Preferably, 0.1? (100 x FT x FR x T) / (FH x OD)? 7. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

More preferably, 0.5? (100 x FT x FR x T) / (FH x OD)? 5. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Most preferably, 1? (100 x FT x FR x T) / (FH x OD)? 3. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Advantageously, the thickness FT of the pin 104, the arc radius FR of the pin 104, the height FH of the pin 104, and the outer diameter of the first header pipe 101 and the second header pipe 102, OD can satisfy the relationship 0.0004? (FT 占)) / (FH 占 OD)? 0.59. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

 More advantageously, 0.004? (FT x FR) / (FH x OD)? 0.3. Most advantageously, 0.04? (FT x FR) / (FH x OD)? 0.1. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

The thickness FT of the pin 104, the arc radius FR of the pin 104, and the height FH of the pin 104 can satisfy the relationship: 0.02? (FT x FR) / FH? 6. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Preferably, 0.05? (FT x FR) / FH? 3. More preferably, 0.1? (FT x FR) / FH? 2. And most preferably 0.5? (FT x FR) / FH? 1. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

The thickness FT of the pin 104 and the height FH of the pin 104 can satisfy the relationship of 0.002? F / FH? 0.04. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Advantageously 0.005? F / FH? 0.01. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

The arc radius FR of the pin 104 and the height FH of the pin 104 can satisfy the relationship of 0.0061? FR / FH? 0.6. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Preferably 0.01? FR / FH? 0.3. More preferably 0.05? FR / FH? 0.1. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

A relatively large wall thickness T among the wall thicknesses of the first header pipe 101 and the second header pipe 102 and a relatively large OD OD among the outer diameters of the first header pipe 101 and the second header pipe 102 satisfy a relation of 0.04 ? T / OD? 0.25 can be satisfied. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Preferably, 0.1? T / OD? 0.2. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

The thickness FT of the fin 104 and the relatively large outer diameter OD of the outer diameters of the first header pipe 101 and the second header pipe 102 can satisfy the relationship 0.0005? FT / OD? 0.015. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Preferably, 0.001? F / OD? 0.01. More preferably, 0.003? F / OD? 0.007. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

The circular arc radius FR of the pin 104 and the relatively large outer diameter OD of the outer diameters of the first header pipe 101 and the second header pipe 102 can satisfy the relation of 0.0016? FR / OD? 0.4. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Preferably 0.016? FR / OD? 0.1. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

The height FH of the pin 104 and the relatively large outer diameter OD of the outer diameters of the first header pipe 101 and the second header pipe 102 can satisfy the relationship of 0.05? FH / OD? 2. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

Preferably 0.1? FH / OD? 1. More preferably, 0.3? FH / OD? 0.7. As a result, not only the fin 104 is torn but the flat tube 103 is not deformed, and the core can be further secured to have sufficient rupture strength, and the heat exchange efficiency and drainage function of the curved heat exchanger 10 can be further improved .

In the description of the present invention, it is to be understood that the terms' center ',' longitudinal ',' lateral ',' length ',' width ',' thickness', 'above', 'below', ' Quot ;, " backward ", " left ", " right ", " vertical ", " horizontal ", & The orientation or positional relationship is the orientation or positional relationship depicted based on the drawing and is for the purpose of illustrating and simplifying the description of the present invention only when the device or element being indicated or implied necessarily has a particular orientation or is configured with a particular orientation It should not be construed as limiting the present invention, since it does not imply or imply that it operates.

It should also be understood that the terms " first " and " second " are used for descriptive purposes only and are not to be construed as indicating, implied, or implied by the quantity of technical features indicated. Thus, a feature defined as 'first' or 'second' may explicitly or implicitly include one or more of the features. Unless specifically stated otherwise in the description of the present invention, the term " plurality " means at least two, for example, two or three, and the like.

In the description of the present invention, the terms 'mounting', 'connecting to each other', 'connecting', and 'fixing' should be understood in a broad sense unless otherwise clearly defined and defined. For example, be a fixed connection, a detachable connection, or an integral connection. It may also be a mechanical connection or an electrical connection. It may also be a direct connection, indirectly connected through an intermediate medium, or may be the communication within the two devices or the interaction relationship of the two devices. Those skilled in the art can understand the concrete meanings of the terms used in the present invention depending on the specific situation.

In the present invention, unless the context clearly dictates otherwise, the first configuration is referred to as being "above" or "below" the second configuration may include the case where the first and second configurations are in direct contact, The first and second configurations may include a case where the first and second configurations are not in direct contact but are in contact through different configurations therebetween. It is to be noted that the first configuration is in the "upper", "upper", and "upper surface" of the second configuration includes the case where the first configuration is directly above and above the second configuration, Only the case in which the horizontal height of the second frame is higher than that of the second frame is displayed. The first configuration is in the lower part, the lower part and the lower part of the second configuration means that the first configuration includes the case where the first configuration is on the lower side and the lower side of the second configuration, Is lower than the second configuration.

In the description herein, it is to be understood that the description including reference to "an embodiment", "some embodiments", "an example", "a specific example", or " , Material, or characteristic is included in at least one embodiment or example of the present invention. The exemplary representation of the term herein does not necessarily refer to the same embodiment or example. In addition, the specific features, configurations, materials, or features described may be combined in any suitable form in one or more embodiments or examples. In addition, those skilled in the art may combine or combine the various embodiments or examples described herein.

Although the embodiments of the present invention have been shown and described, the above embodiments are merely illustrative and should not be construed as limiting the present invention. Those skilled in the art can change, modify, replace, and modify the above embodiments within the scope of the present invention.

10: a curved heat exchanger 101: a first header pipe
102: second header pipe 103: flat pipe
104: plate 1011: curved section
1012: straight section 1041: straight section

Claims (11)

A first header pipe and a second header pipe, a plurality of flat tubes, and a fin,
Wherein each of the first header pipe and the second header pipe has at least one curved section and a straight section adjacent to the curved section and the curved section of the first header pipe and the curved section of the second header pipe correspond to each other And,
Wherein both ends of the flat pipe are connected to the first header pipe and the second header pipe respectively and a plurality of the flat pipes are installed to be spaced from each other along the axial direction of the first header pipe and the second header pipe,
Wherein the pin is disposed between adjacent flattened tubes and extends in a wave-like shape along the length of the flattened tube, the pin includes a flat section, a straight section and a circular section connected between flat and straight sections,
Wherein the thickness of the fin is FT, the first header pipe and the second header pipe have different outer diameters, wherein a relatively large outer diameter of the outer diameters of the first header pipe and the second header pipe is OD, Wherein the pipe and the second header pipe have different wall thicknesses, wherein a relatively large wall thickness of the first and second header pipes is T, the width of the flat tube is W, Wherein the radius is FR and the height of the fin is FH, wherein 0.01? (100 x FT x FR x T) / (FH x OD)? 9. A first header pipe and a second header pipe, a plurality of flat tubes, and a fin,
Wherein each of the first header pipe and the second header pipe has at least one curved section and a straight section adjacent to the curved section and the curved section of the first header pipe and the curved section of the second header pipe correspond to each other And,
Wherein both ends of the flat pipe are connected to the first header pipe and the second header pipe respectively and a plurality of the flat pipes are installed to be spaced from each other along the axial direction of the first header pipe and the second header pipe,
Wherein the pin is disposed between adjacent flattened tubes and the pin extends in a wave-like shape along the length of the flattened tube, the pin includes a flat and straight section and a circular section connected between flat and straight sections In addition,
Wherein the thickness of the fin is FT, the first header pipe and the second header pipe have the same outer diameter, the outer diameters of the first header pipe and the second header pipe are OD, Wherein the pipe has the same wall thickness, the wall thickness of the first header pipe and the second header pipe is T, the width of the flat pipe is W, the arc radius of the pin is FR, the height of the pin is FH , Wherein 0.01? (100 x FT x FR x T) / (FH x OD)? 9. 3. The method according to claim 1 or 2,
(FT x FR) / (FH x OD) ≤ 0.59. 4. The method according to any one of claims 1 to 3,
0.02? (FT x FR) / FH? 6. 5. The method according to any one of claims 1 to 4,
0.002? F / FH? 0.04. 6. The method according to any one of claims 1 to 5,
0.0061 < / = FR / FH < / = 0.6. 7. The method according to any one of claims 1 to 6,
0.04? T / OD? 0.25. 8. The method according to any one of claims 1 to 7,
0.0005? F / OD? 0.015. 9. The method according to any one of claims 1 to 8,
F / OD < / = 0.4. ≪ / RTI > 10. The method according to any one of claims 1 to 9,
FH / OD < / = 2. ≪ / RTI > 11. The method according to any one of claims 1 to 10,
Wherein the curved heat exchanger is of C type or L type.

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