CN210119145U

CN210119145U - Heat exchanger and refrigeration equipment with same

Info

Publication number: CN210119145U
Application number: CN201920517426.2U
Authority: CN
Inventors: 李宇
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-02-28
Anticipated expiration: 2029-04-15

Abstract

The utility model discloses a heat exchanger and refrigeration plant who has it, the heat exchanger includes: the collecting pipes comprise a first collecting pipe and a second collecting pipe; connect flat pipe, the setting is between first pressure manifold and second pressure manifold, connect flat pipe's width direction and be on a parallel with the extending direction of pressure manifold, a plurality of connection flat pipe arrange into at least one row on the extending direction of pressure manifold, a plurality of connection flat pipe of every row are spaced apart on the extending direction of pressure manifold and are arranged, wherein, one side that is located the one end of pressure manifold forms main air inlet side, one side that is located the other end of pressure manifold forms out the wind side, in a plurality of connection flat pipe of every row, be close to two adjacent connection flat pipe of main air inlet side and be greater than or equal to near out the distance on the extending direction of wind side two adjacent connection flat pipe of wind side at the pressure manifold. According to the utility model discloses the heat exchanger has that the required space of heat transfer is little, hold advantages such as frost efficient and heat exchange efficiency height.

Description

Heat exchanger and refrigeration equipment with same

Technical Field

The utility model relates to a heat transfer technical field particularly, relates to a heat exchanger and having the refrigeration plant of heat exchanger.

Background

The heat exchanger among the correlation technique, when the heat exchanger is applied to the lower environment of heat transfer temperature, the surface that flat pipe was connected in the heat exchanger during operation can form condensation or frost layer, even when the heat exchanger stop work or when the forced heating dewatering defrosting, the water that deposits on connecting flat pipe also can not smoothly flow down, when microchannel heater worked once more, because the operating temperature of heat exchanger is lower, can make the water that deposits on connecting flat pipe surface frost rapidly, the windage of increase heat exchanger reduces the heat exchange efficiency of heat exchanger.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a heat exchanger, this heat exchanger have that the required space of heat transfer is little, hold advantages such as frost is efficient and heat exchange efficiency height.

The utility model discloses still provide one kind and have the refrigeration plant of heat exchanger.

To achieve the above object, according to the embodiment of the first aspect of the present invention, a heat exchanger is provided, the heat exchanger including: the collecting pipes comprise a first collecting pipe and a second collecting pipe; the connecting flat pipes are arranged between the first collecting pipe and the second collecting pipe, the width direction of each connecting flat pipe is parallel to the extending direction of the collecting pipe, the connecting flat pipes are arranged in at least one row in the extending direction of the collecting pipe, the connecting flat pipes in each row are arranged in the extending direction of the collecting pipe at intervals, one side of one end of the collecting pipe forms a main air inlet side, one side of the other end of the collecting pipe forms an air outlet side, and in the connecting flat pipes in each row, the distance between every two adjacent connecting flat pipes close to the main air inlet side in the extending direction of the collecting pipe is larger than or equal to the distance between every two adjacent connecting flat pipes close to the air outlet side in the extending direction of the collecting pipe.

According to the utility model discloses heat exchanger has that the required space of heat transfer is little, hold advantages such as frost efficient and heat exchange efficiency height.

In addition, the heat exchanger according to the above embodiment of the present invention may further have the following additional technical features:

according to the utility model discloses a some embodiments are in a plurality of every row among the flat connecting pipe, the adjacent nth flat connecting pipe who arranges is in with n +1 flat connecting pipe the ascending distance of extending direction of pressure manifold is W_2-nWherein, the nth flat connecting pipe is close to the air outlet side, the (n + 1) th flat connecting pipe is far away from the air outlet side, W_2-(n+1)/W_2-n≥1。

According to the utility model discloses a some embodiments, a plurality of in every row connect flat intraductal divide into to be close to go out the ith group of air-out side with for ith group keeps away from go out the ith +1 group of air-out side, wherein, adjacent two in every group connect flat intraductal the ascending distance in the extending direction of pressure manifold equals, just adjacent two in the (i + 1) group connect flat intraductal the ascending distance in the extending direction of pressure manifold is greater than or equal to adjacent two in the ith group connect flat intraductal the ascending distance in the extending direction of pressure manifold.

According to some embodiments of the present invention, the heat exchanger further has at least one auxiliary air inlet side located at the side of the collecting pipe, wherein, among the plurality of connecting flat pipes which enter air through each auxiliary air inlet side, the distance between two adjacent connecting flat pipes away from the air outlet side in the extending direction of the collecting pipe is greater than or equal to the distance between two adjacent connecting flat pipes close to the air outlet side in the extending direction of the collecting pipe; in addition, in the plurality of connecting flat pipes which enter air through the main air inlet side, the distance between two adjacent connecting flat pipes which are far away from the air outlet side in the extending direction of the collecting pipe is greater than or equal to the distance between two adjacent connecting flat pipes which are close to the air outlet side in the extending direction of the collecting pipe.

According to the utility model discloses a some embodiments are in a plurality of every row connect flat pipe in, be close to the air-out side connect flat pipe's width more than or equal to be close to main intake side connect flat pipe's width.

According to the utility model discloses a some embodiments are in a plurality of every row connect flat pipe in, be close to the play wind side connect flat pipe's thickness more than or equal to be close to main intake side connect flat pipe's thickness.

According to some embodiments of the utility model, at a plurality of each row among the flat pipe of connection, the thickness of the flat pipe of nth connection is D_2-nAnd has a width W_1-nW is as described_1-nAnd said D_2-nSatisfy the relation: 1 > (W)_1-n-D_2-n)/W_1-n≥0.5。

According to the utility model discloses a some embodiments, it is a plurality of connect flat pipe to be in form a line on the extending direction of pressure manifold.

According to the utility model discloses a some embodiments, it is a plurality of connect flat pipe to be in form multiseriate on the extending direction of pressure manifold, wherein, on the width direction of pressure manifold, arbitrary one connect flat pipe and adjacent row to correspond connect flat pipe to be in just to or stagger on the width direction of pressure manifold.

According to some embodiments of the utility model, the pressure manifold with the welded fastening face of connecting flat pipe is the plane.

According to the utility model discloses a few embodiments, the cross section of pressure manifold is the rectangle, set up the welding hole that has annular turn-ups on the pressure manifold, flat union coupling pipe's tip inserts annular turn-ups and welded fastening.

According to some embodiments of the invention, the heat exchanger is a microchannel heat exchanger.

According to the utility model discloses an embodiment of second aspect provides a refrigeration plant, refrigeration plant includes according to the utility model discloses an embodiment of first aspect the heat exchanger.

According to the utility model discloses refrigeration plant, through utilizing according to the utility model discloses an embodiment of first aspect the heat exchanger, have that the required space of heat transfer is little, hold advantages such as frost efficient and heat exchange efficiency height.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a heat exchanger according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a heat exchanger according to another embodiment of the present invention.

Fig. 4 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a heat exchanger according to another embodiment of the present invention.

Fig. 6 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention.

Fig. 7 is an enlarged view at D in fig. 6.

Fig. 8 is a schematic structural diagram of a heat exchanger according to another embodiment of the present invention.

Fig. 9 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention.

Fig. 10 is an enlarged view at E in fig. 9.

Fig. 11 is a schematic structural diagram of a heat exchanger according to another embodiment of the present invention.

Fig. 12 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention.

Fig. 13 is an enlarged view at F in fig. 12.

Fig. 14 is a frost-holding efficiency relationship diagram of a heat exchanger according to an embodiment of the present invention.

Fig. 15 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention.

Fig. 16 is an enlarged view at G in fig. 15.

Fig. 17 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention.

Fig. 18 is a cross-sectional view of a heat exchanger according to an embodiment of the present invention.

Fig. 19 is a schematic structural diagram of a heat exchanger according to another embodiment of the present invention.

Fig. 20 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention.

Fig. 21 is a schematic structural view of a heat exchanger according to another embodiment of the present invention.

Fig. 22 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention.

Fig. 23 is a schematic structural view of a heat exchanger according to another embodiment of the present invention.

Fig. 24 is an enlarged view at H in fig. 23.

Fig. 25 is a cross-sectional view of a heat exchanger according to another embodiment of the present invention.

Fig. 26 is an enlarged view at J in fig. 25.

Fig. 27 is a schematic structural diagram of a heat exchange assembly according to an embodiment of the present invention.

Fig. 28 is an enlarged view at K in fig. 27.

Fig. 29 is a schematic structural diagram of a heat exchange assembly according to an embodiment of the present invention.

Figure 30 is a cross-sectional view of a heat exchange assembly according to an embodiment of the present invention.

Reference numerals: the heat exchange component 10, the heat exchanger 1, the header 100, the primary air inlet side 101, the air outlet side 102, the secondary air inlet side 103, the first header 110, the second header 120, the first partition plate 130, the connecting flat tubes 200, the first connecting tubes 310, the second connecting tubes 320, the second partition plate 330, the fins 400, the first fins 410, the second fins 420, the third fins 430, the fixing plate 500, the mounting holes 510, the gaps 520, the heater 2, the heating tubes 230, the first straight tube portions 211, the second straight tube portions 212 and the bent tube portions 213.

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.

A heat exchanger 1 according to an embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 1 to 30, a heat exchanger 1 according to an embodiment of the present invention includes a collecting main 100 and a connecting flat pipe 200.

The header 100 includes a first header 110 and a second header 120. Connecting flat pipe 200 is disposed between first collecting pipe 110 and second collecting pipe 120, the width direction of connecting flat pipe 200 is parallel to the extending direction of collecting pipe 100, a plurality of connecting flat pipe 200 are arranged in at least one row in the extending direction of collecting pipe 100, a plurality of connecting flat pipe 200 of each row are arranged at intervals in the extending direction of collecting pipe 100, wherein, one side of one end of collecting pipe 100 forms main air inlet side 101, one side of the other end of collecting pipe 100 forms air outlet side 102, in a plurality of connecting flat pipe 200 of each row, the distance of two adjacent connecting flat pipe 200 close to main air inlet side 101 in the extending direction of collecting pipe 100 is greater than or equal to the distance of two adjacent connecting flat pipe 200 close to air outlet side 102 in the extending direction of collecting pipe 100.

According to the utility model discloses heat exchanger 1, width direction through making connection flat pipe 200 is on a parallel with the extending direction of pressure manifold 100, compare the heat exchanger among the correlation technique, the trend of the air current that heat exchanger 1 carried out the forced heat transfer has been changed, make the air current when heat exchanger 1 is flowing through, the flow direction of air current can be on a parallel with the extending direction of pressure manifold 100, make the air current can force the convection heat transfer through the shared space of heat exchanger 1, avoid the air current to need occupy extra space as flow channel, be convenient for reduce the required space that occupies of flow channel of air current, thereby make the required working space of heat exchanger 1 diminish, be convenient for heat exchanger 1's installation and use, improve heat exchanger 1's the flexibility that sets up, improve heat exchanger 1's application range, improve heat exchanger 1's functionality and suitability.

Moreover, by making the width direction of the flat connecting pipe 200 parallel to the extending direction of the collecting pipe 100, compared with the heat exchanger in the related art, because the thickness of the flat connecting pipe 200 in the extending direction of the collecting pipe 100 is smaller, when the surface of the flat connecting pipe 200 forms a condensation or frost layer, the formed condensation or frost layer can smoothly flow down when the heat exchanger 1 stops working or the heat exchanger 1 performs forced heating, dewatering and defrosting, and the normal operation of the heat exchanger 1 can be prevented from being affected by excessive water accumulated on the flat connecting pipe 200, which is convenient for improving the heat exchange efficiency of the heat exchanger 1 and improving the working reliability and stability of the heat exchanger 1.

In addition, the distance between two adjacent flat connection tubes 200 close to the main air inlet side 101 in the extending direction of the collecting pipe 100 is greater than or equal to the distance between two adjacent flat connection tubes 200 close to the air outlet side 102 in the extending direction of the collecting pipe 100, compared with the heat exchanger in the related art, in this way, the arrangement of the flat connection tubes 200 is reduced at the positions of the main air inlet side 101 and the like where condensation and frost are easy to occur, the water-containing and frost-containing space of the heat exchanger 1 is increased, the frost-containing efficiency of the heat exchanger 1 is improved, the overall condensation and frost of the heat exchanger 1 are more uniform, the excessive frost can be avoided, the excessive wind resistance of the heat exchanger 1 can be avoided, the condensation and frost on the heat exchanger 1 can be conveniently removed, the normal operation of the heat exchanger 1 is prevented from being influenced by the excessive condensation and frost, the heat exchange effect of the heat exchanger 1 is convenient to be improved, the arrangement of the flat connection tubes 200 is increased at the positions of, further facilitating the improvement of the heat exchange efficiency of the heat exchanger 1.

Therefore, according to the utility model discloses heat exchanger 1 has that the required space of heat transfer is little, hold advantages such as frost efficient and heat exchange efficiency height.

In some embodiments of the present invention, as shown in fig. 1 to 30, a heat exchanger 1 according to an embodiment of the present invention includes a collecting pipe 100 and a connecting flat pipe 200.

Specifically, as shown in fig. 1 to 4, among the plurality of flat connecting tubes 200 in each row, the distance between the nth flat connecting tube 200 and the (n + 1) th flat connecting tube 200 which are adjacently arranged in the extending direction of the collecting main 100 is W_2-nThe nth flat connecting pipe 200 is close to the air outlet side 102, and the (n + 1) th flat connecting pipe 200 is far away from the air outlet side 102 and W is far away from the air outlet side 102 relative to the nth flat connecting pipe 200_2-(n+1)/W_2-nNot less than 1. It is to be understood here that W_2-nIs the distance between the nth connecting flat tube 200 and the (n + 1) th connecting flat tube 200 which are adjacently arranged in the extending direction of the collecting pipe 100, W_2-(n+1)The distance between the (n + 1) th flat connecting pipe 200 and the (n + 2) th flat connecting pipe 200 which are adjacently arranged in the extending direction of the collecting pipe 100 is n, and n is a variable. Like this at heat exchanger 1 during operation, the density that main air inlet side 101 one side was connected flat pipe 200 is less, two adjacent distances of connecting between flat pipe 200 are great, it stores the condensation or the frosting that forms to have sufficient appearance frost space, the air current can continue to carry out the heat transfer with heat exchanger 1 subsequent part through remaining space, heat exchanger 1 holds the frost efficiently, can avoid connecting flat pipe 200 density too big and cause quick formation condensation or frosting, thereby cause heat exchanger 1's frost stifled, further be convenient for improve heat exchanger 1's heat transfer effect.

Optionally, as shown in fig. 3 to 4, the connection flat tubes 200 in each row are divided into an ith group close to the air-out side 102 and an i +1 th group far from the air-out side 102 relative to the ith group, where a distance between two adjacent connection flat tubes 200 in each group in the extending direction of the header 100 is equal, and a distance between two adjacent connection flat tubes 200 in the i +1 th group in the extending direction of the header 100 is greater than or equal to a distance between two adjacent connection flat tubes 200 in the ith group in the extending direction of the header 100. Can make heat exchanger 1 main air inlet side 101 one side like this, the distance between two adjacent flat connection pipes 200 is great, is convenient for increase heat exchanger 1 hold the frost space, is convenient for improve heat exchanger 1 hold the frost efficient, avoids heat exchanger 1 to take place the frost stifled and influence heat transfer performance of heat exchanger 1, further is convenient for improve heat exchanger 1's work efficiency.

Specifically, as shown in fig. 5 to 6, the heat exchanger 1 further has at least one secondary air inlet side 103 located on the side of the collecting main 100, wherein, among the plurality of flat connecting tubes 200 that supply air through each secondary air inlet side 103, the distance between two adjacent flat connecting tubes 200 that are far away from the air outlet side 102 in the extending direction of the collecting main 100 is greater than or equal to the distance between two adjacent flat connecting tubes 200 that are close to the air outlet side 102 in the extending direction of the collecting main 100. In addition, among the plurality of flat connecting tubes 200 that supply air through the main air inlet side 101, the distance between two adjacent flat connecting tubes 200 that are far from the air outlet side 102 in the extending direction of the collecting main 100 is greater than or equal to the distance between two adjacent flat connecting tubes 200 that are near the air outlet side 102 in the extending direction of the collecting main 100. So not only be convenient for increase heat exchanger 1's intake, be convenient for connect flat pipe 200 and the air current fully to contact, improve heat exchanger 1's heat exchange efficiency, be convenient for reduce the condensation volume or the frost volume of main intake side 101 moreover, be convenient for make heat exchanger 1's the distribution of frosting more even, be convenient for further detach the condensation on heat exchanger 1 or frosting, be convenient for further improve heat exchanger 1's operational reliability and heat transfer stability.

Optionally, in a plurality of flat connecting tubes 200 in each row, the width of flat connecting tube 200 near air outlet side 102 is greater than or equal to the width of flat connecting tube 200 near main air inlet side 101. Like this be convenient for increase heat exchanger 1 and hold water at main air inlet side 101 and hold the frost space, be convenient for increase heat exchanger 1's heat transfer area at air-out side 102, not only be convenient for improve heat exchanger 1 hold frost efficiency, be convenient for detach condensation, the frosting on the heat exchanger 1, avoid condensation, frosting too much and influence heat exchanger 1's normal work, be convenient for increase heat exchanger 1's heat transfer area moreover, further be convenient for improve heat exchanger 1's heat transfer effect.

Specifically, in the plurality of flat connecting tubes 200 in each row, the thickness of flat connecting tube 200 near air outlet side 102 is greater than or equal to the thickness of flat connecting tube 200 near main air inlet side 101. Therefore, the air resistance of the heat exchanger 1 on the main air inlet side 101 is reduced, the air flow can smoothly flow through the heat exchanger 1, the heat exchange between the air flow and the heat exchanger 1 is facilitated, and the heat exchange efficiency of the heat exchanger 1 is further improved.

Optionally, among the flat connecting tubes 200 in each row, the thickness of the nth flat connecting tube 200 is D_2-nAnd has a width W_1-nW is as described_1-nAnd said D_2-nSatisfy the relation: 1 > (W)_1-n-D_2-n)/W_1-nNot less than 0.5. Here, it is to be understood that D_2-nIs the thickness of the nth flat connecting tube, W_1-nIs the width of the nth flat connecting pipe, and n is a variable. This allows the width W of the nth flat connecting tube 200_1-nAnd thickness D_2-nHas a proper proportion range, not only can avoid the width W of the nth connecting flat tube 200_1-nThe value is too small, so that the fluid space in the connecting flat pipe 200 is too small, the heat exchange efficiency of the heat exchanger 1 is prevented from becoming low, and the thickness D of the nth connecting flat pipe 200 can be avoided_2-nThe value is too big and the thickness that makes flat pipe 200 of connecting is too big, prevents that heat exchanger 1's windage grow and lead to heat exchange efficiency step-down of heat exchanger 1, further is convenient for improve heat exchanger 1's heat transfer effect.

According to some embodiments of the present invention, as shown in fig. 1 to 6, a plurality of flat connection pipes 200 are aligned in a row in the extending direction of the header 100. Therefore, the production efficiency of the heat exchanger 1 is improved, and the heat exchange efficiency of the heat exchanger 1 is improved.

According to other embodiments of the present invention, as shown in fig. 7 to 12, a plurality of connection flat tubes 200 are arranged in a plurality of rows in the extending direction of the collecting main 100, wherein, in the width direction of the collecting main 100, any one connection flat tube 200 is aligned or staggered with the connection flat tube 200 corresponding to the adjacent row in the width direction of the collecting main 100. Not only can set up more connection flat pipe 200 like this, be convenient for improve heat exchanger 1's heat transfer area, can make pressure manifold 100's atress more even moreover, be convenient for improve the joint strength between connection flat pipe 200 and pressure manifold 100, be convenient for improve heat exchanger 1's operational reliability and stability.

Further, any one of the connection flat tubes 200 and the connection flat tubes 200 corresponding to adjacent columns are staggered in the width direction of the collecting pipe 100, so that disturbance to air flow can be enhanced, and the heat exchange efficiency of the heat exchanger 1 is improved.

Specifically, the welding fixing surface of the collecting main 100 and the connecting flat tube 200 is a plane. This also can be convenient for weld connection flat pipe 200 to pressure manifold 100, be convenient for improve connection flat pipe 200's welding quality, improve connection flat pipe 200's structural reliability, improve connection flat pipe 200's welding efficiency.

Optionally, the cross section of the collecting pipe 100 is rectangular, a welding hole with an annular flange is formed in the collecting pipe 100, and the end of the connecting flat pipe 200 is inserted into the annular flange and welded and fixed. Therefore, the welding fixing surface is convenient to form, the welding holes can be used for positioning the connecting flat tubes 200, the flat tubes 200 and the collecting pipes 100 are further convenient to weld and form, and the welding reliability and convenience of the connecting flat tubes 200 are improved.

Specifically, as shown in fig. 1, a first connecting pipe 310 and a second connecting pipe 320 are arranged on the first collecting pipe 110, the first connecting pipe 310 and the second connecting pipe 320 are arranged at intervals along the extending direction of the first collecting pipe 110, a first partition plate 130 is arranged on the first collecting pipe 110 at a position between the first connecting pipe 310 and the second connecting pipe 320, one of the first connecting pipe 310 and the second connecting pipe 320 is a fluid inlet and the other is a fluid outlet, and the first collecting pipe 110 and the second collecting pipe 120 are communicated through a connecting flat pipe 200, so that fluid in the heat exchanger 1 performs forced heat exchange on air flow. Therefore, the fluid can flow in the heat exchanger 1 conveniently, the fluid in the first connecting pipe 310 and the fluid in the second connecting pipe 320 are prevented from being mixed, so that the fluid can exchange heat with the airflow conveniently, the heat exchange efficiency of the heat exchanger 1 is further improved, and the working reliability and stability of the heat exchanger 1 are improved.

Specifically, as shown in fig. 15, the heat exchanger 1 further includes fins 400, the fins 400 are connected to the connecting flat tubes 200, and at least some of the fins 400 are arranged at intervals in the extending direction of the connecting flat tubes 200. Like this can increase heat exchanger 1's heat transfer area through setting up fin 400, be convenient for strengthen the heat transfer intensity between heat exchanger 1 and the air current, carry out the heat exchange fast between heat exchanger 1 and the air current, be convenient for improve heat exchanger 1's heat exchange efficiency, improve heat exchanger 1's working property.

Specifically, each fin 400 is provided with a through hole having a connecting flange, and the connecting flat tube 200 is inserted into the through hole and connected to the fin 400 by a tensioning or welding process. Therefore, the fin 400 can be positioned by the through holes, so that the flat connecting pipes 200 and the fin 400 can be welded conveniently, and the welding reliability and convenience of the fin 400 can be improved conveniently.

Certainly, the size of the through hole on the fin 400 may be slightly smaller than the external size of the connecting flat tube 200, one end of the connecting flat tube 200 is fixed at a relative position by a tool, then the fin 400 is fixed on a fixing tool according to a position with a preset value, the other end of the connecting flat tube 200 penetrates through the through hole of the fin 400 along the direction of the connecting flange, the connecting flat tube 200 penetrates through the through hole of the fin 400 and is enlarged at the same time of the fin 400, so that the fin 400 is firmly fixed on the connecting flat tube 200, and then the connecting flat tube 200 is inserted into the collecting main 100 for welding.

Alternatively, as shown in fig. 15 to 17, the height direction of the fin 400 is parallel to the extending direction of the header 100, and the thickness direction of the fin 400 is parallel to the extending direction of the connecting flat tubes 200. Therefore, the wind resistance of the heat exchanger 1 caused by the arrangement of the fins 400 can be reduced, the air flow can smoothly flow through the heat exchanger 1, and the heat exchange performance of the heat exchanger 1 is further improved.

Further, the thickness of the fins 400 is L2, the gap between two adjacent fins 400 in the extending direction of the connecting flat tube 200 is L3, and the L2 and the L3 satisfy the relation: 0.998 is not less than (L3-L2)/L3 is not less than 0.9. When the ratio of (L3-L2)/L3 is less than 0.9, the size of L2 relative to L3 is too large, so that the wind resistance of the heat exchanger 1 is too large, and the heat exchange efficiency of the heat exchanger 1 is reduced sharply. When the ratio of (L3-L2)/L3 is more than 0.998, the air resistance of the heat exchanger 1 is too small and the heat exchange efficiency of the heat exchanger 1 is also sharply reduced because the size of L2 is slightly smaller than that of L3. Therefore, when the ratio of 0.998 to 0.9 is greater than or equal to (D1-D2)/D1 to 0.9, the sizes of L2 and L3 are in a proper range, the wind resistance of the heat exchanger 1 is not too large or too small, and the heat exchange efficiency of the heat exchanger is high.

According to an embodiment of the present invention, as shown in fig. 15 to 17, a plurality of fins 400 are arranged at equal intervals along the extending direction of the connection flat tube 200. Therefore, the production and processing of the heat exchanger 1 are further facilitated, and the production efficiency of the heat exchanger 1 is further improved.

Specifically, as shown in fig. 15 to 17, the plurality of fins 400 are equal in height, and each fin 400 is connected to the plurality of flat connecting tubes 200. Therefore, the size of the heat exchanger 1 can be conveniently controlled, the heat conduction efficiency between the fins 400 and the connecting flat tubes 200 can be conveniently improved, and the heat exchange effect of the heat exchanger 1 can be further conveniently improved.

Alternatively, as shown in fig. 19 to 22, one side at one end of the collecting main 100 forms the main air inlet side 101, and one side at the other end of the collecting main 100 forms the air outlet side 102, wherein at least a portion of the plurality of fins 400 has unequal heights, and one end of the plurality of fins 400 in the height direction thereof is substantially flush with the air outlet side 102. Like this at easy condensation such as main air inlet side 101, the position of frosting, reduce the height of fin 400, be convenient for increase heat exchanger 1 and hold water and hold the frost space, improve the appearance frost efficiency of heat exchanger 1, make the holistic condensation of heat exchanger 1, the frosting is more even, can avoid frosting too much and make heat exchanger 1's windage too big, be convenient for detach the condensation on the heat exchanger 1, the frosting, avoid the condensation, frosting too much and influence the normal work of heat exchanger 1, be convenient for improve the heat transfer effect of heat exchanger 1, to the position that is difficult for condensation or frosting such as going out wind side 102, increase the height of fin 400, be convenient for increase heat exchange area of heat exchanger 1, further be convenient for improve the heat exchange efficiency of heat exchanger 1.

Further, as shown in fig. 21, the fin 400 includes a first fin 410, a second fin 420, and a third fin 430 having different heights, and the plurality of first fins 410, the plurality of second fins 420, and the plurality of third fins 430 are arranged in a staggered manner in the extending direction of the connecting flat tubes 200. Therefore, the frost-containing efficiency of the heat exchanger 1 is improved, the heat exchange performance of the heat exchanger 1 is improved, disturbance to airflow is enhanced, and the heat exchange efficiency of the heat exchanger 1 is further improved.

According to another embodiment of the present invention, as shown in fig. 23, the plurality of fins 400 are arranged in a plurality of rows and a plurality of columns, the plurality of fins 400 in each row are arranged at intervals along the extending direction of the connecting flat pipe 200, and the plurality of fins 400 in each column are arranged at intervals along the extending direction of the collecting main 100. Therefore, the wind resistance of the heat exchanger 1 is reduced, the disturbance of air flow is increased, the heat exchange efficiency of the heat exchanger 1 is further improved, and the heat exchange reliability of the heat exchanger 1 is further improved.

Specifically, as shown in fig. 23, one side at one end of the header 100 forms a main air inlet side 101, and one side at the other end of the header 100 forms an air outlet side 102, wherein, among the rows of fins 400, a gap between two adjacent fins 400 in one row of fins 400 close to the main air inlet side 101 is greater than or equal to a gap between two adjacent fins 400 in one row of fins 400 close to the air outlet side 102. Therefore, the distance between two adjacent fins 4000 on one side of the main air inlet side 101 of the heat exchanger 1 is large, the frost containing space of the heat exchanger 1 is convenient to increase, the frost containing efficiency of the heat exchanger 1 is convenient to improve, the heat exchange performance of the heat exchanger 1 is prevented from being influenced by frost blockage of the heat exchanger 1, and the working efficiency of the heat exchanger 1 is further convenient to improve.

In particular, the heat exchanger 1 is a microchannel heat exchanger. Therefore, the heat exchange area of the heat exchanger 1 is increased, the heat exchange performance of the heat exchanger 1 is improved, and the heat exchange efficiency of the heat exchanger 1 is further improved.

Specifically, as shown in fig. 7, each flat connecting pipe 200 is provided with a plurality of second partition plates 330, and the second partition plates 330 extend along the length direction of the flat connecting pipe 200 and are arranged at intervals in the width direction of the flat connecting pipe 200, so as to separate the space in the flat connecting pipe 200 into a plurality of small-sized microchannels, increase the heat exchange area of the heat exchanger 1, and enhance the heat exchange effect between the fluid and the air flow in the heat exchanger 1.

Specifically, the heat exchange assembly 10 includes a heat exchanger 1 and a heater 2, the heater 2 being disposed adjacent to the primary air intake side 101 for heating air surrounding the heat exchanger 1. So be convenient for detach condensation or frost layer on the heat exchanger 1, especially when heat exchanger 1 is applied to the lower environment of heat transfer temperature, can avoid heat exchanger 1's the surface of connecting flat pipe 200 to produce condensation or frost rapidly, avoid increasing heat exchanger 1's windage, the smooth and easy flow through of the air current of being convenient for is convenient for carry heat exchanger 1's heat exchange efficiency, improves heat exchange capacity of heat exchanger 1, improves heat exchanger 1's operational reliability and stability.

In addition, the heater 2 is arranged close to the main air inlet side 101, and the main air inlet side 101 is a position where condensation and frost are more prone to occur, so that the condensation or frost layer of the main air inlet side 101 can be conveniently removed by the heater 2, the defrosting efficiency of the heater 2 can be conveniently improved, the defrosting time of the heater 2 can be shortened, the air resistance of the heat exchanger 1 can be reduced, the heat exchange efficiency of the heat exchanger 1 can be improved, the working performance of the heat exchange assembly 10 can be further conveniently improved, and the functionality and the applicability of the heat exchange assembly 10 can be improved.

Specifically, as shown in fig. 27, the heat exchanger 1 is provided with at least two fixing plates 500 arranged at intervals in the extending direction of the flat connecting tubes 200, wherein the fixing plates 500 extend toward the main air inlet side 101, and the heater 2 is fixed on the at least two fixing plates 500. Therefore, the heater 2 can be installed and fixed by the fixing plate 500, the heater 2 can be assembled smoothly, and the assembly efficiency of the heat exchange assembly 10 is improved. Meanwhile, at least two fixing plates 500 are arranged, so that the stress of the heater 2 is more uniform, and the arrangement reliability and the structural stability of the heater 2 are improved

Alternatively, as shown in fig. 30, the fixing plate 500 has a mounting hole 510, and the heater 2 is inserted through the mounting hole 510. So the heater 2 and the fixing plate 500 are fixedly connected, the fixing plate 500 is convenient to support the heater 2, and the stability of the heater 2 is further improved.

Further, as shown in fig. 30, the fixing plate 500 has a slit 520 extending from the mounting hole 510 to an edge of the fixing plate 500 to allow at least a portion of the fixing plate 500 to be bent. This is convenient for the heater 2 to smoothly wear to locate in mounting hole 510, and for example fixed plate 500 can be bent first and be installed heater 2, then reset in order to fix heater 2 to the bending portion, is further convenient for improve the assembly efficiency of heater 2.

Specifically, the fixing plate 500 has a fixing hole through which the connection flat tube 200 is inserted. The installation setting of flat pipe 200 is connected to be convenient for like this, avoids flat pipe 200 and fixed plate 500 to take place to interfere, is further convenient for improve heat exchange assembly 10's structural stability and operational reliability.

Alternatively, as shown in fig. 28-30, the heater 2 forms a heating tube 230 extending from the first header 110 to the second header 120. Can utilize heating pipe 230 to heat condensation or the frost layer on connecting flat pipe 200 like this, be convenient for detach condensation or the frost layer on connecting flat pipe 200 more fast, further be convenient for reduce heat exchanger 1's windage, improve heat exchanger 1's heat exchange efficiency.

Further, as shown in fig. 28 to 30, the heating pipe 230 includes a first straight pipe portion 211, a second straight pipe portion 212 and an elbow portion 213, the first straight pipe portion 211 is located at one side of the heat exchanger 1 and is parallel to the extending direction of the first header 110, and the second straight pipe portion 212 is located at the other side of the heat exchanger 1 and is parallel to the extending direction of the second header 120. The bent pipe portion 213 is disposed on the main air inlet side 101, two ends of the bent pipe portion 213 are respectively in arc transition connection with the first straight pipe portion 211 and the second straight pipe portion 212, and the middle portion of the bent pipe portion 213 is bent toward a direction away from the heat exchanger 1. This is convenient for improve the heating efficiency of heater 2, and the heater 2 of being convenient for heats the defrosting to main air inlet side 101 better, is convenient for improve the heating effect of heater 2.

According to some embodiments of the present invention, the heat exchange assembly 10 comprises a heat exchanger 1 and a heater 2. A heater 2 is provided adjacent the primary air intake side 101 for heating the air surrounding the heat exchanger 1. The heat exchanger 1 is provided with at least two fixing plates 500 arranged at intervals in the extending direction of the flat connecting tubes 200, the fixing plate 500 extends towards the main air inlet side 101, the heater 2 is fixed on at least two fixing plates 500, each fixing plate 500 is provided with a mounting hole 510, the heater 2 penetrates through the mounting holes 510, each fixing plate 500 is provided with a gap 520 extending from the mounting hole 510 to the edge of the fixing plate 500 so that at least one part of each fixing plate 500 can be bent, each fixing plate 500 is provided with a fixing hole, each connecting flat pipe 200 penetrates through the fixing holes, the heater 2 forms a heating pipe 230 extending from the first collecting pipe 110 to the second collecting pipe 120, each heating pipe 230 comprises a first straight pipe portion 211, a second straight pipe portion 212 and a bent pipe portion 213, the first straight pipe portion 211 is located on one side of the heat exchanger 1 and is parallel to the extending direction of the first collecting pipe 110, and the second straight pipe portion 212 is located on the other side of the heat exchanger 1 and is. The bent pipe portion 213 is disposed on the main air inlet side 101, two ends of the bent pipe portion 213 are respectively in arc transition connection with the first straight pipe portion 211 and the second straight pipe portion 212, and the middle portion of the bent pipe portion 213 is bent toward a direction away from the heat exchanger 1.

Heat exchanger 1 is the microchannel heat exchanger, all has a plurality of second baffles 330 in every connection flat pipe 200, and second baffles 330 extends and sets up at the interval on the width direction of connecting flat pipe 200 along the length direction of connecting flat pipe 200. The header 100 includes a first header 110 and a second header 120. At least one row of flat connecting pipes 200, a plurality of flat connecting pipes 200 in each row are arranged at intervals in the extending direction of the collecting pipe 100, the flat connecting pipes 200 are arranged between the first collecting pipe 110 and the second collecting pipe 120, and the width direction of the flat connecting pipes 200 is parallel to the extending direction of the collecting pipe 100. The plurality of flat connecting pipes 200 are arranged in at least one row in the extending direction of the collecting pipe 100, the plurality of flat connecting pipes 200 in each row are arranged at intervals in the extending direction of the collecting pipe 100, wherein one side at one end of the collecting pipe 100 forms a main air inlet side 101, one side at the other end of the collecting pipe 100 forms an air outlet side 102, and in the plurality of flat connecting pipes 200 in each row, the distance between two adjacent flat connecting pipes 200 close to the main air inlet side 101 in the extending direction of the collecting pipe 100 is greater than or equal to the distance between two adjacent flat connecting pipes 200 close to the air outlet side 102 in the extending direction of the collecting pipe 100. Of the flat connecting tubes 200 of each row, the nth connection arranged next to one anotherThe distance between the flat pipe 200 and the (n + 1) th connecting flat pipe 200 in the extending direction of the collecting pipe 100 is W_2-nThe nth flat connecting pipe 200 is close to the air outlet side 102, and the (n + 1) th flat connecting pipe 200 is far away from the air outlet side 102 and W is far away from the air outlet side 102 relative to the nth flat connecting pipe 200_2-(n+1)/W_2-nNot less than 1. The multiple flat connecting tubes 200 in each row are divided into an ith group close to the air outlet side 102 and an (i + 1) th group far from the air outlet side 102 relative to the ith group, wherein the distance between every two adjacent flat connecting tubes 200 in each group in the extending direction of the collecting pipe 100 is equal, and the distance between every two adjacent flat connecting tubes 200 in the (i + 1) th group in the extending direction of the collecting pipe 100 is greater than or equal to the distance between every two adjacent flat connecting tubes 200 in the ith group in the extending direction of the collecting pipe 100. The heat exchanger 1 further has at least one secondary air inlet side 103 located on the side of the collecting main 100, wherein, among the plurality of connecting flat tubes 200 that supply air through each secondary air inlet side 103, the distance between two adjacent connecting flat tubes 200 that are far away from the air outlet side 102 in the extending direction of the collecting main 100 is greater than or equal to the distance between two adjacent connecting flat tubes 200 that are near the air outlet side 102 in the extending direction of the collecting main 100. In addition, among the plurality of flat connecting tubes 200 that supply air through the main air inlet side 101, the distance between two adjacent flat connecting tubes 200 that are far from the air outlet side 102 in the extending direction of the collecting main 100 is greater than or equal to the distance between two adjacent flat connecting tubes 200 that are near the air outlet side 102 in the extending direction of the collecting main 100. In the plurality of flat connecting tubes 200 in each row, the width of flat connecting tube 200 closer to air outlet side 102 is greater than or equal to the width of flat connecting tube 200 closer to main air inlet side 101. In the plurality of flat connecting tubes 200 in each row, the thickness of flat connecting tube 200 closer to air outlet side 102 is greater than or equal to the thickness of flat connecting tube 200 closer to main air inlet side 101. Among a plurality of flat connecting tubes 200 in each row, the thickness of the nth flat connecting tube 200 is D_2-nAnd has a width W_1-nW is as described_1-nAnd said D_2-nSatisfy the relation: 1 > (W)_1-n-D_2-n)/W_1-nNot less than 0.5. The flat connecting tubes 200 are arranged in one or more rows in the direction of extension of the header 100, wherein any one of the flat connecting tubes is connected in the width direction of the header 100The flat tubes 200 are opposite to or staggered with the connecting flat tubes 200 corresponding to adjacent rows in the width direction of the collecting main 100. The welding fixing surface of the collecting pipe 100 and the connecting flat pipe 200 is a plane, the cross section of the collecting pipe 100 is rectangular, a welding hole with an annular flanging is formed in the collecting pipe 100, and the end part of the connecting flat pipe 200 is inserted into the annular flanging and is welded and fixed. First collecting main 110 is provided with first connecting pipe 310 and second connecting pipe 320, first connecting pipe 310 and second connecting pipe 320 are arranged at intervals along the extending direction of first collecting main 110, first baffle 130 is arranged on first collecting main 110 at the position between first connecting pipe 310 and second connecting pipe 320, one of first connecting pipe 310 and second connecting pipe 320 is a fluid inlet and the other is a fluid outlet, first collecting main 110 and second collecting main 120 are communicated through connecting flat pipe 200, so that fluid in heat exchanger 1 can perform forced heat exchange on air flow.

Fins 400 are connected to flat connecting tube 200, and at least some of the plurality of fins 400 are arranged at intervals in the extending direction of flat connecting tube 200. Offer the perforation that has the connection turn-ups on every fin 400, connect flat pipe 200 to insert the perforation and be connected with fin 400 through rising and tightly or welding process, the direction of height of fin 400 is on a parallel with the extending direction of pressure manifold 100, and the thickness direction of fin 400 is on a parallel with the extending direction of connecting flat pipe 200, and the thickness of fin 400 is L2, and the clearance between two adjacent fins 400 is L3 on the extending direction of connecting flat pipe 200, L2 with L3 satisfies the relational expression: 0.998 is not less than (L3-L2)/L3 is not less than 0.9, the plurality of fins 400 are arranged at equal intervals along the extension direction of the connecting flat tubes 200, the heights of the plurality of fins 400 are equal, and each fin 400 is connected with the plurality of connecting flat tubes 200. One side at one end of the collecting main 100 forms a main air inlet side 101, and one side at the other end of the collecting main 100 forms an air outlet side 102, wherein in the multiple rows of fins 400, the gap between two adjacent fins 400 in the row of fins 400 close to the main air inlet side 101 is larger than or equal to the gap between two adjacent fins 400 in the row of fins 400 close to the air outlet side 102.

According to other embodiments of the present invention, the heat exchange assembly 10 includes a heat exchanger 1 and a heater 2. A heater 2 is provided adjacent the primary air intake side 101 for heating the air surrounding the heat exchanger 1. The heat exchanger 1 is provided with at least two fixing plates 500 arranged at intervals in the extending direction of the flat connecting tubes 200, the fixing plate 500 extends towards the main air inlet side 101, the heater 2 is fixed on at least two fixing plates 500, each fixing plate 500 is provided with a mounting hole 510, the heater 2 penetrates through the mounting holes 510, each fixing plate 500 is provided with a gap 520 extending from the mounting hole 510 to the edge of the fixing plate 500 so that at least one part of each fixing plate 500 can be bent, each fixing plate 500 is provided with a fixing hole, each connecting flat pipe 200 penetrates through the fixing holes, the heater 2 forms a heating pipe 230 extending from the first collecting pipe 110 to the second collecting pipe 120, each heating pipe 230 comprises a first straight pipe portion 211, a second straight pipe portion 212 and a bent pipe portion 213, the first straight pipe portion 211 is located on one side of the heat exchanger 1 and is parallel to the extending direction of the first collecting pipe 110, and the second straight pipe portion 212 is located on the other side of the heat exchanger 1 and is. The bent pipe portion 213 is disposed on the main air inlet side 101, two ends of the bent pipe portion 213 are respectively in arc transition connection with the first straight pipe portion 211 and the second straight pipe portion 212, and the middle portion of the bent pipe portion 213 is bent toward a direction away from the heat exchanger 1.

Heat exchanger 1 is the microchannel heat exchanger, all has a plurality of second baffles 330 in every connection flat pipe 200, and second baffles 330 extends and sets up at the interval on the width direction of connecting flat pipe 200 along the length direction of connecting flat pipe 200. The header 100 includes a first header 110 and a second header 120. At least one row of flat connecting pipes 200, a plurality of flat connecting pipes 200 in each row are arranged at intervals in the extending direction of the collecting pipe 100, the flat connecting pipes 200 are arranged between the first collecting pipe 110 and the second collecting pipe 120, and the width direction of the flat connecting pipes 200 is parallel to the extending direction of the collecting pipe 100. The plurality of flat connecting pipes 200 are arranged in at least one row in the extending direction of the collecting pipe 100, the plurality of flat connecting pipes 200 in each row are arranged at intervals in the extending direction of the collecting pipe 100, wherein a main air inlet side 101 is formed at one side of one end of the collecting pipe 100, an air outlet side 102 is formed at one side of the other end of the collecting pipe 100, and in the plurality of flat connecting pipes 200 in each row, the distance between two adjacent flat connecting pipes 200 close to the main air inlet side 101 in the extending direction of the collecting pipe 100 is greater than or equal to the distance between two adjacent flat connecting pipes 200 in eachThe distance between two adjacent flat connecting tubes 200 close to the air outlet side 102 in the extension direction of the collecting main 100. Among the flat connecting tubes 200 in each row, the distance between the nth flat connecting tube 200 and the (n + 1) th flat connecting tube 200 which are adjacently arranged in the extending direction of the collecting main 100 is W_2-nThe nth flat connecting pipe 200 is close to the air outlet side 102, and the (n + 1) th flat connecting pipe 200 is far away from the air outlet side 102 and W is far away from the air outlet side 102 relative to the nth flat connecting pipe 200_2-(n+1)/W_2-nNot less than 1. The multiple flat connecting tubes 200 in each row are divided into an ith group close to the air outlet side 102 and an (i + 1) th group far from the air outlet side 102 relative to the ith group, wherein the distance between every two adjacent flat connecting tubes 200 in each group in the extending direction of the collecting pipe 100 is equal, and the distance between every two adjacent flat connecting tubes 200 in the (i + 1) th group in the extending direction of the collecting pipe 100 is greater than or equal to the distance between every two adjacent flat connecting tubes 200 in the ith group in the extending direction of the collecting pipe 100. The heat exchanger 1 further has at least one secondary air inlet side 103 located on the side of the collecting main 100, wherein, among the plurality of connecting flat tubes 200 that supply air through each secondary air inlet side 103, the distance between two adjacent connecting flat tubes 200 that are far away from the air outlet side 102 in the extending direction of the collecting main 100 is greater than or equal to the distance between two adjacent connecting flat tubes 200 that are near the air outlet side 102 in the extending direction of the collecting main 100. In addition, among the plurality of flat connecting tubes 200 that supply air through the main air inlet side 101, the distance between two adjacent flat connecting tubes 200 that are far from the air outlet side 102 in the extending direction of the collecting main 100 is greater than or equal to the distance between two adjacent flat connecting tubes 200 that are near the air outlet side 102 in the extending direction of the collecting main 100. In the plurality of flat connecting tubes 200 in each row, the width of flat connecting tube 200 closer to air outlet side 102 is greater than or equal to the width of flat connecting tube 200 closer to main air inlet side 101. In the plurality of flat connecting tubes 200 in each row, the thickness of flat connecting tube 200 closer to air outlet side 102 is greater than or equal to the thickness of flat connecting tube 200 closer to main air inlet side 101. Among a plurality of flat connecting tubes 200 in each row, the thickness of the nth flat connecting tube 200 is D_2-nAnd has a width W_1-nW is as described_1-nAnd said D_2-nSatisfy the relation: 1 > (W)_1-n-D_2-n)/W_1-nNot less than 0.5. The plurality of flat connecting tubes 200 are arranged in one or more rows in the extending direction of the collecting main 100, wherein any flat connecting tube 200 is opposite to or staggered with the flat connecting tube 200 corresponding to the adjacent row in the width direction of the collecting main 100. The welding fixing surface of the collecting pipe 100 and the connecting flat pipe 200 is a plane, the cross section of the collecting pipe 100 is rectangular, a welding hole with an annular flanging is formed in the collecting pipe 100, and the end part of the connecting flat pipe 200 is inserted into the annular flanging and is welded and fixed. First collecting main 110 is provided with first connecting pipe 310 and second connecting pipe 320, first connecting pipe 310 and second connecting pipe 320 are arranged at intervals along the extending direction of first collecting main 110, first baffle 130 is arranged on first collecting main 110 at the position between first connecting pipe 310 and second connecting pipe 320, one of first connecting pipe 310 and second connecting pipe 320 is a fluid inlet and the other is a fluid outlet, first collecting main 110 and second collecting main 120 are communicated through connecting flat pipe 200, so that fluid in heat exchanger 1 can perform forced heat exchange on air flow.

Fins 400 are connected to flat connecting tube 200, and at least some of the plurality of fins 400 are arranged at intervals in the extending direction of flat connecting tube 200. Offer the perforation that has the connection turn-ups on every fin 400, connect flat pipe 200 to insert the perforation and be connected with fin 400 through rising and tightly or welding process, the direction of height of fin 400 is on a parallel with the extending direction of pressure manifold 100, and the thickness direction of fin 400 is on a parallel with the extending direction of connecting flat pipe 200, and the thickness of fin 400 is L2, and the clearance between two adjacent fins 400 is L3 on the extending direction of connecting flat pipe 200, L2 with L3 satisfies the relational expression: 0.998 is not less than (L3-L2)/L3 is not less than 0.9, the plurality of fins 400 are arranged at equal intervals along the extension direction of the connecting flat tubes 200, the heights of the plurality of fins 400 are equal, and each fin 400 is connected with the plurality of connecting flat tubes 200. One side at one end of the manifold 100 forms a main air inlet side 101, one side at the other end of the manifold 100 forms an air outlet side 102, wherein, the heights of at least one part of the plurality of fins 400 are not equal, and one end of the plurality of fins 400 in the height direction thereof is approximately flush with the air outlet side 102, the plurality of fins 400 are arranged in a plurality of rows and a plurality of columns, the plurality of fins 400 in each row are arranged at intervals along the extension direction of the connecting flat tube 200, the plurality of fins 400 in each column are arranged at intervals along the extension direction of the collecting main 100, one side at one end of the collecting main 100 forms a main air inlet side 101, one side at the other end of the collecting main 100 forms the air outlet side 102, among the rows of fins 400, the gap between two adjacent fins 400 in one row of fins 400 close to the main air inlet side 101 is greater than or equal to the gap between two adjacent fins 400 in one row of fins 400 close to the air outlet side 102.

A refrigeration apparatus according to an embodiment of the present invention is described below. According to the utility model discloses refrigeration plant includes according to the utility model discloses above-mentioned embodiment's heat exchanger 1.

According to the utility model discloses refrigeration plant, through utilizing according to the utility model discloses the heat exchanger 1 of above-mentioned embodiment has that the required space of heat transfer is little, hold advantages such as frost efficient and heat exchange efficiency height.

Other constructions and operations of the refrigerating apparatus according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

1. A heat exchanger, comprising:

the collecting pipes comprise a first collecting pipe and a second collecting pipe;

the connecting flat tubes are arranged between the first collecting pipe and the second collecting pipe, the width direction of the connecting flat tubes is parallel to the extending direction of the collecting pipes, a plurality of the connecting flat tubes are arranged in at least one row in the extending direction of the collecting pipes, the connecting flat tubes in each row are arranged at intervals in the extending direction of the collecting pipes,

the distance between two adjacent connecting flat tubes close to the main air inlet side in the extending direction of the collecting pipe is greater than or equal to the distance between two adjacent connecting flat tubes close to the air outlet side in the extending direction of the collecting pipe.

2. The heat exchanger according to claim 1, wherein, among the connecting flat tubes in each row, an nth connecting flat tube and an (n + 1) th connecting flat tube which are adjacently arranged have a distance W in an extending direction of the header pipe_2-n，

Wherein, the nth flat connecting pipe is close to the air outlet side, the (n + 1) th flat connecting pipe is far away from the air outlet side, W_2-(n+1)/W_2-n≥1。

3. The heat exchanger according to claim 1, wherein among the plurality of flat connecting tubes in each row, the flat connecting tubes are divided into an i-th group close to the air outlet side and an i + 1-th group far from the air outlet side relative to the i-th group,

the distance between every two adjacent connecting flat tubes in each group in the extending direction of the collecting pipe is equal, and the distance between every two adjacent connecting flat tubes in the (i + 1) th group in the extending direction of the collecting pipe is larger than or equal to the distance between every two adjacent connecting flat tubes in the (i) th group in the extending direction of the collecting pipe.

4. The heat exchanger of claim 1, further having at least one secondary air intake side located on the header side,

among the connecting flat tubes which enter air through each auxiliary air inlet side, the distance between two adjacent connecting flat tubes far away from the air outlet side in the extending direction of the collecting pipe is greater than or equal to the distance between two adjacent connecting flat tubes close to the air outlet side in the extending direction of the collecting pipe;

in addition, in the plurality of connecting flat pipes which enter air through the main air inlet side, the distance between two adjacent connecting flat pipes which are far away from the air outlet side in the extending direction of the collecting pipe is greater than or equal to the distance between two adjacent connecting flat pipes which are close to the air outlet side in the extending direction of the collecting pipe.

5. The heat exchanger according to claim 1, wherein, among the flat connecting tubes in each row, the width of the flat connecting tube near the air outlet side is greater than or equal to the width of the flat connecting tube near the main air inlet side.

6. The heat exchanger according to claim 1, wherein, among the flat connecting tubes in each row, the flat connecting tubes closer to the air outlet side have a thickness greater than or equal to that of the flat connecting tubes closer to the main air inlet side.

7. The heat exchanger according to claim 1, wherein among the plurality of flat connecting tubes in each row, the nth flat connecting tube has a thickness D_2-nAnd has a width W_1-nW is as described_1-nAnd said D_2-nSatisfy the relation: 1 > (W)_1-n-D_2-n)/W_1-n≥0.5。

8. The heat exchanger according to claim 1, wherein a plurality of the connection flat tubes are aligned in a direction in which the header extends.

9. The heat exchanger according to claim 1, wherein a plurality of the connection flat tubes are arranged in a plurality of rows in an extending direction of the header,

in the width direction of the collecting pipe, any one of the connecting flat pipes is opposite to or staggered with the connecting flat pipe corresponding to the adjacent row in the width direction of the collecting pipe.

10. The heat exchanger according to claim 1, wherein the welding fixing surfaces of the collecting main and the connecting flat tubes are flat surfaces.

11. The heat exchanger according to claim 10, wherein the cross section of the collecting pipe is rectangular, the collecting pipe is provided with a welding hole having an annular flange, and the end of the connecting flat pipe is inserted into the annular flange and welded and fixed.

12. The heat exchanger of any one of claims 1 to 11, wherein the heat exchanger is a microchannel heat exchanger.

13. A refrigeration device, characterized in that it comprises a heat exchanger according to any one of claims 1-12.