CN214333108U - Heat exchanger and air conditioning system with same - Google Patents
Heat exchanger and air conditioning system with same Download PDFInfo
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- CN214333108U CN214333108U CN202022511650.6U CN202022511650U CN214333108U CN 214333108 U CN214333108 U CN 214333108U CN 202022511650 U CN202022511650 U CN 202022511650U CN 214333108 U CN214333108 U CN 214333108U
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Abstract
The utility model discloses a heat exchanger and air conditioning system who has this heat exchanger. The heat exchanger includes: a first heat exchanger core, the first heat exchanger core comprising: the heat exchanger comprises a first sub heat exchanger core and a second sub heat exchanger core, wherein the first sub heat exchanger core and the second sub heat exchanger core comprise heat exchange tubes; and the second heat exchanger core comprises a heat exchange tube, and the heat exchange tube of the second heat exchanger core is connected with the heat exchange tube of the second sub-heat exchanger core of the first heat exchanger core. And under the same air inlet speed, the ratio of the wind resistance of the heat exchanger to the air passing through the first heat exchanger core to the wind resistance of the heat exchanger to the air passing through the second heat exchanger core is smaller than a preset value. By adopting the heat exchanger, the performance of the heat exchanger can be improved.
Description
Technical Field
The embodiment of the utility model relates to a heat exchanger and air conditioning system who has this heat exchanger.
Background
The heat exchanger comprises a collecting pipe and a heat exchange pipe. The heat exchanger may include a plurality of rows of heat exchanger cores.
SUMMERY OF THE UTILITY MODEL
An object of the embodiments of the present invention is to provide a heat exchanger and an air conditioning system having the same, whereby the performance of the heat exchanger can be improved, for example.
An embodiment of the utility model provides a heat exchanger, this heat exchanger includes: a first heat exchanger core comprising: the heat exchanger comprises a first sub heat exchanger core and a second sub heat exchanger core, wherein each of the first sub heat exchanger core and the second sub heat exchanger core comprises a heat exchange tube, the heat exchange tubes of the first sub heat exchanger core and the second sub heat exchanger core are connected with each other, and orthographic projections of the first sub heat exchanger core and the second sub heat exchanger core on a plane where the second sub heat exchanger core is located are at least partially overlapped; and the second heat exchanger core comprises a heat exchange tube, the heat exchange tube of the second heat exchanger core is connected with the heat exchange tube of the second sub-heat exchanger core of the first heat exchanger core, and the ratio of the wind resistance of the heat exchanger to the air passing through the first heat exchanger core to the wind resistance of the heat exchanger to the air passing through the second heat exchanger core is smaller than a preset value under the same air inlet speed.
According to an embodiment of the present invention, each of the first and second sub heat exchanger cores of the first heat exchanger core further comprises fins; the second heat exchanger core further comprises fins; and at the same inlet wind speed, the wind resistance or the pressure drop caused by at least one part of at least one fin of the second heat exchanger core is larger than that caused by at least one part of at least one fin of the first heat exchanger core.
According to the utility model discloses an embodiment, the cross sectional area of at least one heat exchange tube of second heat exchanger core is greater than the cross sectional area of at least one heat exchange tube of first heat exchanger core.
According to the utility model discloses an embodiment, the heat exchanger still include: the first wind resistance plate is positioned on one side of the second heat exchanger core in the thickness direction of the second heat exchanger core, and the orthographic projection of the first wind resistance plate and the orthographic projection of the second heat exchanger core on the plane of the second heat exchanger core are at least partially overlapped.
According to the utility model discloses an embodiment, the heat exchanger still include: the first heat exchanger core body is provided with a first heat exchanger core body, a second heat exchanger core body and a second wind resistance plate, wherein the first heat exchanger core body is provided with a first heat exchanger core body, the second heat exchanger core body is provided with a second heat exchanger core body, the first wind resistance plate is arranged between the first heat exchanger core body and the second heat exchanger core body, the first heat exchanger core body is provided with a first heat exchanger core body, the second heat exchanger core body is provided with a second wind resistance plate, the second wind resistance plate is arranged between the second heat exchanger core body and the second heat exchanger core body, the first wind resistance plate is arranged on one side, far away from the connecting portion, of the first heat exchanger core body, in the length direction of the heat exchange tube of the first heat exchanger core body.
According to the utility model discloses an embodiment, first choke plate with the first sub-heat exchanger core of first heat exchanger core is in lie in on the thickness direction of the second sub-heat exchanger core of first heat exchanger core same one side of the second sub-heat exchanger core of first heat exchanger core.
According to the utility model discloses an embodiment, the heat exchanger still include: and the second wind resistance plate is at least partially overlapped with the orthographic projection of the first heat exchanger core on the plane where the second sub heat exchanger core of the first heat exchanger core is located.
According to the utility model discloses an embodiment, first choke plate with second choke plate is located on the thickness direction of the second sub heat exchanger core of first heat exchanger core with the relative one side of first sub heat exchanger core, under the same air inlet wind speed the windage of second choke plate is less than or equal to the windage of first choke plate.
According to the utility model discloses an embodiment, the heat exchanger still include: a third wind blocker plate located between the first and second sub heat exchanger cores of the first heat exchanger core in a thickness direction of the second sub heat exchanger core of the first heat exchanger core.
According to the utility model discloses an embodiment, the heat exchanger still include: the first sub heat exchanger core body of the first heat exchanger core body is connected with the heat exchange tube of the second sub heat exchanger core body through the connecting part; the first collecting pipe is connected with the heat exchange pipe of the second heat exchanger core body at one side of the second heat exchanger core body, which is far away from the second sub heat exchanger core body of the first heat exchanger core body; and the second collecting pipe is connected with the heat exchange pipe of the first sub heat exchanger core body of the first heat exchanger core body at one side of the first sub heat exchanger core body of the first heat exchanger core body, which is far away from the connecting part.
According to the utility model discloses an embodiment, the cross sectional area of first pressure manifold is greater than the cross sectional area of second pressure manifold.
According to the utility model discloses an embodiment, connecting portion include a plurality of connecting pipes, first heat exchanger core the heat exchange tube of first sub heat exchanger core with first heat exchanger core the heat exchange tube of second sub heat exchanger core passes through a plurality of connecting pipes are connected respectively.
According to the utility model discloses an embodiment, at least one in the density of at least part fin of at least one fin of second heat transfer core, the width of fin, the angle of windowing of fin, the number of windowing and the length of windowing is greater than at least one in the density of at least part fin of at least one fin of first heat transfer core, the width of fin, the angle of windowing of fin, the number of windowing and the length of windowing.
The embodiment of the utility model provides an air conditioning system is still provided, include: the heat exchanger is described above.
According to the utility model discloses an embodiment, the heat exchanger still includes: the first sub heat exchanger core body of the first heat exchanger core body is connected with the heat exchange tube of the second sub heat exchanger core body through the connecting part; the first collecting pipe is connected with the heat exchange pipe of the second heat exchanger core body at one side of the second heat exchanger core body, which is far away from the second sub heat exchanger core body of the first heat exchanger core body; and the second collecting pipe is connected with the heat exchange pipe of the first sub heat exchanger core body of the first heat exchanger core body at one side of the first sub heat exchanger core body of the first heat exchanger core body, which is far away from the connecting part.
According to an embodiment of the invention, the first header and the second header are horizontally arranged in use.
According to the utility model discloses an embodiment, the heat exchanger still includes: a first header connected to the heat exchange tubes of the second heat exchanger core on a side of the second heat exchanger core remote from the second sub-heat exchanger core of the first heat exchanger core, wherein the first header is disposed horizontally in use and below the second heat exchanger core in use.
According to the utility model discloses an embodiment, in the use first pressure manifold is in the below of second heat exchanger core, and the second pressure manifold is in the below of the second sub-heat exchanger core of first heat exchanger core.
According to the utility model discloses an embodiment, in the use first pressure manifold is in the top of second heat exchanger core, and the second pressure manifold is in the top of the sub-heat exchanger core of second of first heat exchanger core.
According to the utility model discloses an in the direction of air flow through the heat exchanger, the second heat exchanger core with the second sub heat exchanger core of first heat exchanger core is located in the upper reaches of the first sub heat exchanger core of first heat exchanger core in the use.
According to the utility model discloses an in the direction of air flow through the heat exchanger, the second heat exchanger core with the second sub heat exchanger core of first heat exchanger core is located the low reaches of the first sub heat exchanger core of first heat exchanger core in the use.
With the heat exchanger and the air conditioning system having the heat exchanger according to the embodiments of the present invention, for example, the performance of the heat exchanger can be improved.
Drawings
Fig. 1 is a schematic perspective view of a heat exchanger according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a heat exchanger according to another embodiment of the present invention;
fig. 3 is a schematic perspective view of a fin of a heat exchanger according to an embodiment of the present invention; and
fig. 4 is a cross-sectional view of the fin shown in fig. 3.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
According to the utility model discloses an air conditioning system includes the compressor, as the heat exchanger of evaporimeter and condenser.
Referring to fig. 1 to 2, a heat exchanger 100 according to an embodiment of the present invention includes: a first heat exchanger core 1, the first heat exchanger core 1 comprising: the heat exchanger comprises a first sub heat exchanger core 11 and a second sub heat exchanger core 12, wherein each of the first sub heat exchanger core 11 and the second sub heat exchanger core 12 comprises a heat exchange tube 8, the heat exchange tubes 8 of the first sub heat exchanger core 11 and the second sub heat exchanger core 12 are connected with each other, and orthographic projections of the first sub heat exchanger core 11 and the second sub heat exchanger core 12 on a plane where the second sub heat exchanger core 12 is located are at least partially overlapped; and the second heat exchanger core 2 comprises a heat exchange tube 8, and the heat exchange tube 8 of the second heat exchanger core 2 is connected with the heat exchange tube 8 of the second sub heat exchanger core 12 of the first heat exchanger core 1. Under the same air inlet speed, the ratio of the wind resistance of the heat exchanger 100 to the air A passing through the first heat exchanger core 1 to the wind resistance of the heat exchanger 100 to the air A passing through the second heat exchanger core 2 is smaller than a preset value. For example, when the heat exchange tubes and the fins of the first heat exchanger core and the second heat exchanger core are consistent in structure and the wind resistance plate is not installed, the ratio of the wind resistance of the heat exchanger to the heat exchanger is about 2. The windage of the heat exchanger 100 against the air a passing through the first heat exchanger core 1 is only the windage of the first heat exchanger core 1 against the air a without windage plates, and is the windage of the first heat exchanger core 1 and the windage plates against the air a with windage plates. Also, the wind resistance of the heat exchanger 100 to the air a passing through the second heat exchanger core 2 is only the wind resistance of the second heat exchanger core 2 to the air a without the wind resistance plate, and is the wind resistance of the second heat exchanger core 2 and the wind resistance plate to the air a with the wind resistance plate. It should be noted that "under the same air inlet speed" does not mean that the air inlet speeds of the first heat exchanger core and the second heat exchanger core are necessarily the same when the heat exchanger is in use, but means that the ratio of the air resistance of the heat exchanger to the first heat exchanger core to the air resistance of the heat exchanger to the second heat exchanger core needs to be measured and compared under the condition that the air inlet speeds are the same. The following references to "at the same inlet wind speed" are to be understood similarly.
In an embodiment of the present invention, referring to fig. 1 to 4, each of the first and second sub heat exchanger cores 11 and 12 of the first heat exchanger core 1 further comprises fins 9; the second heat exchanger core 2 further comprises fins 9; and at least one part of at least one fin 9 of the second heat exchanger core 2 causes higher wind resistance or pressure drop than at least one part of at least one fin 9 of the first heat exchanger core 1 at the same wind speed of the inlet air. For example, the density of at least a portion of at least one fin 9 of the second heat exchanger core 2 is greater than the density of the fins 9 of the first heat exchanger core 1. For the corrugated fins shown in fig. 3 and 4, the density of the fins may be the number of peaks or valleys per unit length of the wave. If the fins are plate-like fins through which the heat exchange tube passes, the fin density means the number of fins per unit length perpendicular to the plane in which the fins extend. In addition, the wind resistance or the pressure drop can be adjusted by changing at least one of the width W of the fin (along the wind direction a), the angle α of the fenestration 91 of the fin (the included angle α between the wind direction a), and the number of fenestrations 91, and the length H of the fenestration 91. For example, at least one of the density of at least some fins, the width W of the fins, the angle α of the fenestration 91 of the fins, the number of fenestrations 91, and the length H of the fenestration 91 of the at least one fin 9 of the second heat exchange core 2 is greater than at least one of the density of at least some fins, the width W of the fins, the angle α of the fenestration 91 of the fins, the number of fenestrations 91, and the length H of the fenestration 91 of the at least one fin 9 of the first heat exchange core 1. It should be noted that fig. 1 and 2 only show some fins by way of example, and the number, distribution, etc. of the fins are not limited thereto.
In an embodiment of the present invention, referring to fig. 1 and 2, the cross-sectional area of the at least one heat exchange tube 8 of the second heat exchanger core 2 is larger than the cross-sectional area of the at least one heat exchange tube 8 of the first heat exchanger core 1.
In some embodiments of the present invention, the fins of the second heat exchanger core 2 may be the same as the fins of the second sub heat exchanger core 12 of the first heat exchanger core 1, and the wind resistance or the pressure drop caused by at least a portion of the at least one fin 9 of the second heat exchanger core 2 is greater than the wind resistance or the pressure drop caused by at least a portion of the at least one fin 9 of the first heat exchanger sub core 11 of the first heat exchanger core 1 at the same wind inlet speed. The utility model discloses an in some examples, the flat pipe of second heat exchanger core 2 can be the same with the flat pipe of the sub-heat exchange core 12 of second of first heat exchanger core 1, and the cross sectional area of at least one heat exchange tube 8 of second heat exchanger core 2 is greater than the cross sectional area of at least one heat exchange tube 8 of the sub-core 11 of first heat exchanger core 1's first heat exchanger. The fins and/or heat exchange tubes of the second heat exchanger core 2 are the same as the fins and/or heat exchange tubes of the second sub heat exchanger core 12 of the first heat exchanger core 1, so that the manufacturing difficulty can be reduced.
In an embodiment of the present invention, referring to fig. 1 and 2, the heat exchanger 100 further includes: a first wind resistance plate 31, the first wind resistance plate 31 being located on one side of the second heat exchanger core 2 in the thickness direction of the second heat exchanger core 2, the first wind resistance plate 31 at least partially overlapping with an orthographic projection of the second heat exchanger core 2 on a plane on which the second heat exchanger core 2 is located.
In an embodiment of the present invention, referring to fig. 1 and 2, the heat exchanger 100 further includes: the heat exchanger comprises a connecting part 5, wherein the heat exchange tubes 8 of the first sub heat exchanger core 11 and the second sub heat exchanger core 12 of the first heat exchanger core 1 are connected through the connecting part 5, and the first wind resistance plate 31 is positioned on one side, far away from the connecting part 5, of the first sub heat exchanger core 11 of the first heat exchanger core 1 in the length direction of the heat exchange tubes 8 of the first sub heat exchanger core 11 of the first heat exchanger core 1. According to the utility model discloses an example, first choke plate 31 with first sub-heat exchanger core 11 of first heat exchanger core 1 is in lie in the thickness direction of the second sub-heat exchanger core 12 of first heat exchanger core 1 with one side of the second sub-heat exchanger core 12 of first heat exchanger core 1.
In the embodiment of the present invention, referring to fig. 2, the heat exchanger 100 further includes: a second wind resistance plate 32, said second wind resistance plate 32 at least partially overlapping an orthographic projection of the first heat exchanger core 1 on a plane of the second sub heat exchanger core 12 of said first heat exchanger core 1. According to the utility model discloses an example, first choke plate 31 with second choke plate 32 is located in the thickness direction of the second sub heat exchanger core 12 of first heat exchanger core 1 with the one side that first sub heat exchanger core 11 is relative, under the same inlet air speed the windage of second choke plate 32 is less than or equal to the windage of first choke plate 31.
In the embodiment of the present invention, referring to fig. 2, the heat exchanger 100 further includes: a third wind resistance plate 33, the third wind resistance plate 33 being located between the first sub core 11 and the second sub core 12 of the first core 1 in the thickness direction of the second sub core 12 of the first core 1.
In the embodiment of the present invention, referring to fig. 2, the heat exchanger 100 further includes: the first collecting pipe 61 is connected with the heat exchange pipe 8 of the second heat exchanger core 2 at one side, away from the second sub heat exchanger core 12 of the first heat exchanger core 1, of the second heat exchanger core 2; and the second collecting pipe 62 is connected with the heat exchange pipe 8 of the first sub heat exchanger core 11 of the first heat exchanger core 1 on one side, far away from the connecting part 5, of the first sub heat exchanger core 11 of the first heat exchanger core 1. The cross-sectional area of the first header 61 may be greater than the cross-sectional area of the second header 62.
In the embodiment of the present invention, referring to fig. 1 and fig. 2, the connecting portion 5 includes a plurality of connecting pipes 51, the heat exchange tube 8 of the first sub heat exchanger core 11 of the first heat exchanger core 1 and the heat exchange tube 8 of the second sub heat exchanger core 12 of the first heat exchanger core 1 pass through the plurality of connecting pipes 51 and are connected respectively.
In an embodiment of the present invention, referring to fig. 1 and 2, the first header 61 and the second header 62 are horizontally disposed in use.
In an embodiment of the invention, referring to fig. 1 and 2, the first header 61 is arranged horizontally in use, and the first header 61 is below the second heat exchanger core 2 in use.
In an embodiment of the present invention, referring to fig. 1 and 2, in use the first header 61 is below the second heat exchanger core 2, and the second header 62 is below the second sub heat exchanger core 12 of the first heat exchanger core 1.
In an embodiment of the present invention, referring to fig. 1 and 2, in use the first header 61 is above the second heat exchanger core 2, and the second header 62 is above the second sub heat exchanger core 12 of the first heat exchanger core 1.
In an embodiment of the invention, referring to fig. 1 and 2, in use in the direction of air a flow through the heat exchanger 100, the second heat exchanger core 2 and the second sub heat exchanger core 12 of the first heat exchanger core 1 are located upstream of the first sub heat exchanger core 11 of the first heat exchanger core 1.
In an embodiment of the invention, referring to fig. 1 and 2, in use in the direction of air a flow through the heat exchanger 100, the second heat exchanger core 2 and the second sub heat exchanger core 12 of the first heat exchanger core 1 are located downstream of the first sub heat exchanger core 11 of the first heat exchanger core 1.
Although the header is described in connection with the figures, the header may have any suitable shape and configuration and is not limited to the header shown in fig. 1 and 2.
Referring to fig. 1 to 2, a heat exchanger 100 according to an embodiment of the present invention includes: the first row of heat exchanger cores 101 are formed by the second sub heat exchanger core 12 and the second heat exchanger core 2 of the first heat exchanger core 1, and the first row of heat exchanger cores 101 comprise a plurality of heat exchange tubes 8; the second row of heat exchanger cores 102 are positioned on one side of the first row of heat exchanger cores 101 in the thickness direction of the first row of heat exchanger cores 101 and are formed by the first sub-heat exchanger cores 11 of the first heat exchanger core 1, the second row of heat exchanger cores 102 comprise a plurality of heat exchange tubes 8, and the length of the heat exchange tubes 8 of the first row of heat exchanger cores 101 is greater than that of the heat exchange tubes 8 of the second row of heat exchanger cores 102; and the connecting part 5 is used for connecting the plurality of heat exchange tubes 8 of the first row of heat exchanger cores 101 with the plurality of heat exchange tubes 8 of the second row of heat exchanger cores 102 through the connecting part 5. The difference between the windage of the heat exchanger 100 to the air a passing through the second row heat exchanger core 102 and the windage of the heat exchanger 100 to the air a passing through the first row heat exchanger core 101 outside the second row heat exchanger core 102 is smaller than a predetermined value.
In the embodiment of the present invention, referring to fig. 1 and 2, the connecting portion 5 includes a plurality of connecting pipes 51, and the plurality of heat exchange tubes 8 of the first row of heat exchanger core 101 and the plurality of heat exchange tubes 8 of the second row of heat exchanger core 102 are respectively connected through the plurality of connecting pipes 51. In the embodiment shown in the figures, the first row of cores 101 and the second row of cores 102 are formed by bending the same core, and the bent portions of the cores constitute the connection portions 5. The connection part 5 may include heat exchange tubes as a plurality of connection tubes 51 and fins alternately arranged with the plurality of connection tubes 51.
In the embodiment of the present invention, referring to fig. 1 to 4, the first row of heat exchanger cores 101 further includes a plurality of fins 9 arranged alternately with the plurality of heat exchange tubes 8; the second row of heat exchanger cores 102 also comprises a plurality of fins 9 arranged alternately with the plurality of heat exchange tubes 8; and the density of the fins 9 of the second row of heat exchanger cores 102 is smaller than the density of the fins 9 of the first row of heat exchanger cores 101. The density of the fins as used in the second row of the heat exchanger core 102 is smaller than the density of the fins of the first row of the heat exchanger core 101, so that the wind resistance of the second row of the heat exchanger core 102 is small. Also, for example, the density of the fins at the portion of the first row of the heat exchanger core 101 beyond the second row of the heat exchanger core 102 is higher than the density of the fins at the portion of the first row of the heat exchanger core 101 facing the second row of the heat exchanger core 102, so as to increase the wind resistance of this portion. It is possible to make the wind speed substantially the same over the entire surface of the heat exchanger to improve the heat exchange amount. At least one of the first row of heat exchanger cores 101 and the second row of heat exchanger cores 102 may not include fins.
In the embodiment of the present invention, referring to fig. 1 and fig. 2, the cross-sectional area of the heat exchange tube 8 of the second row of heat exchanger core 102 is smaller than the cross-sectional area of the heat exchange tube 8 of the first row of heat exchanger core 101.
In an embodiment of the present invention, referring to fig. 1 and 2, the heat exchanger 100 further includes: and the first wind resistance plate 31 is positioned on one side of the first row of heat exchanger cores 101 in the thickness direction of the first row of heat exchanger cores 101, and is positioned on one side of the second row of heat exchanger cores 102 away from the connecting part 5 in the length direction of the heat exchange tubes 8. The first windage plate 31 is near the first row of heat exchanger cores 101 and may generate windage. Thereby making the wind field of the first row 101 and the second row 102 of cores more uniform to improve the heat exchange amount.
In an embodiment of the present invention, referring to fig. 1, the first wind resistance plate 31 and the second row heat exchanger core 102 are located on the same side of the first row heat exchanger core 101 in the thickness direction of the first row heat exchanger core 101, in another embodiment of the present invention, referring to fig. 2, the first wind resistance plate 31 and the second row heat exchanger core 102 are located on different sides of the first row heat exchanger core 101 in the thickness direction of the first row heat exchanger core 101. As shown in fig. 1, the first baffle 31 may be placed on the windward side of the first row of heat exchanger cores 101. The size of the first baffle 31 is close to the difference in size between the first row 101 and the second row 102.
In an embodiment of the present invention, referring to fig. 2, the heat exchanger 100 further includes: and the first and second wind resistance plates 31 and 32 are positioned on the opposite side of the first row of heat exchanger cores 101 to the second row of heat exchanger cores 102 in the thickness direction of the first row of heat exchanger cores 101, the second wind resistance plate 32 is positioned on the side of the first wind resistance plate 31 facing the connecting part 5 in the length direction of the heat exchange tube 8, and the wind resistance of the second wind resistance plate 32 is smaller than that of the first wind resistance plate 31. As shown in fig. 1, the air a flows through the first row of the heat exchanger core 101 and then flows through the first and second wind resistance plates 31 and 32. The overall size of the first and second windage plates 31, 32 may be close to the size of the heat exchanger 100.
In an embodiment of the present invention, referring to fig. 1 and 2, the heat exchanger 100 further includes: the first collecting pipe 61 is connected with the plurality of heat exchange tubes 8 of the first row of heat exchanger cores 101 on one side, far away from the connecting part 5, of the first row of heat exchanger cores 101; and the second collecting pipe 62 is connected with the plurality of heat exchange tubes 8 of the second row of heat exchanger core 102 on the side, away from the connecting part 5, of the second row of heat exchanger core 102.
In an embodiment of the present invention, referring to fig. 1, the heat exchanger 100 further includes: and a third wind resistance plate 33, wherein the third wind resistance plate 33 is positioned between the first row of heat exchanger cores 101 and the second collecting pipe 62 in the thickness direction of the first row of heat exchanger cores 101.
In an embodiment of the present invention, the wind-resistant plate may also be wind-tight. The wind resistance plate can play a role in filtering. The wind resistance plate can be a filter screen, a grid, a porous plate and the like. The material of the wind resistance plate is not limited, and can be metal, plastic, nylon and the like.
In an embodiment of the present invention, referring to fig. 1 and 2, the first header 61 is horizontally disposed in use, and the first header 61 is below the first row of heat exchanger cores 101 in use.
In an embodiment of the present invention, referring to fig. 1 and 2, the first header 61 and the second header 62 are horizontally or substantially horizontally disposed in use, for example, the first header 61 is below the first row of heat exchanger cores 101 and the second header 62 is below the second row of heat exchanger cores 102 in use; or in use the first header 61 is above the first row 101 and the second header 62 is above the second row 102. For example, in use, the first row 101 of cores is upstream of the second row 102 of cores in the direction of air a flow through the heat exchanger 100; or in use the first row 101 of cores is located downstream of the second row 102 of cores in the direction of air a flow through the heat exchanger 100.
In use, the first row 101 is located upstream of the second row 102 in the direction of air a flow through the heat exchanger 100, e.g., when the heat exchanger is used as an evaporator, refrigerant enters the heat exchanger 100 from the connecting pipe 72 connected to the second header 62, and refrigerant can flow out of the heat exchanger 100 from the connecting pipe connected to the first header 61. The air and the refrigerant are subjected to countercurrent heat exchange, so that the heat exchange quantity can be improved. While saving a lot of material (only removing material from the second row of exchanger cores 102) with only a small reduction in the amount of heat exchange. Compared with a single-row heat exchanger, the design can save space (in the length direction of the heat exchange tube).
In use, the first row 101 of cores is located downstream of the second row 102 of cores in the direction of air a flow through the heat exchanger 100. When the heat exchanger is used as an evaporator (the air temperature is higher than the refrigerant temperature, the second row heat exchanger core 102 is the first row in the flow direction of the wind, and the first row heat exchanger core 101 is the second row), the refrigerant enters the heat exchanger 100 from the connection pipe 72 connected to the second header 62, and the refrigerant can flow out of the heat exchanger 100 from the connection pipe connected to the first header 61. The air and the refrigerant are subjected to concurrent heat exchange, and when the refrigerant reaches the tail ends (near the first collecting pipe 61) of the heat exchange tubes 8 of the first row of heat exchanger cores 101, the refrigerant needs to reach an overheat state and the temperature of the refrigerant rises. If the two rows of the heat exchangers are consistent in length, the air must pass through the first row, the air temperature is reduced after passing through the first row, the air starts to pass through the second row, but the temperature of the refrigerant in the second row is increased, so that the temperature difference between the air and the refrigerant is small or even zero, heat exchange is not facilitated, and the refrigerant is not easy to overheat. And the design may avoid this.
The first header 61 is, in use, below the first row of heat exchanger cores 101. When the heat exchanger is used as a condenser, the refrigerant changes from a gaseous state to a liquid state along the flowing direction, and the density of the refrigerant is greatly increased. If the first collecting pipe 61 is arranged at the lower part, in the phase change process of the refrigerant, the liquid refrigerant can automatically flow to the lower part under the action of gravity, so that the on-way pressure drop of the refrigerant can be reduced, and the heat exchange quantity of the heat exchanger is further improved.
The first header 61 is above the first row of heat exchanger cores 101 in use. When the heat exchanger is used as an evaporator, the refrigerant changes from a two-phase gas-liquid state to a pure gas state along the flowing direction, and the density of the refrigerant is greatly reduced. If the first collecting pipe 61 is at the upper part, in the phase change process of the refrigerant, the gaseous refrigerant can automatically rise to the upper part under the action of buoyancy, so that the on-way pressure drop of the refrigerant can be reduced, and the heat exchange quantity of the heat exchanger is further improved.
In an embodiment of the present invention, referring to fig. 1 and 2, the cross-sectional area of the first header 61 is larger than the cross-sectional area of the second header 62. For example, the diameter of the first header 61 is larger than that of the second header 62, and the ratio of the diameter of the first header 61 to the diameter of the second header 62 is 2-1. Under the condition that the diameter of the second collecting pipe 62 is smaller, the distance between the plurality of heat exchange tubes 8 of the first row of heat exchanger core 101 and the plurality of heat exchange tubes 8 of the second row of heat exchanger core 102 can be closer, and the volume of the heat exchanger along the wind direction can be reduced. The first header 61 is large, and the pressure drop on the refrigerant side in the first header 61 can be made low. If the heat exchanger is a condenser, the pressure drop of the refrigerant passing through the first collecting pipe 61 is low, so that the saturated condensing temperature of the refrigerant in the heat exchange pipe is high, the temperature difference between the refrigerant and air is large, and the heat exchange quantity is further improved.
In the embodiment of the present invention, referring to fig. 1 and fig. 2, when the heat exchanger 100 is used as an evaporator, the refrigerant enters the heat exchanger 100 from the connecting pipe 72 connected to the second collecting pipe 62.
In the embodiment of the present invention, referring to fig. 1 and fig. 2, the length ratio of the heat exchange tubes 8 of the first row of heat exchanger cores 101 to the heat exchange tubes 8 of the second row of heat exchanger cores 102 is 0.1-1. The length of the heat exchange tube 8 of the second row of heat exchanger cores 102 is more than 100 mm.
With the heat exchanger 100 according to the present invention, the performance of the heat exchanger 100 can be improved.
While the above embodiments have been described, some of the features of the above embodiments may be combined to form new embodiments.
Claims (21)
1. A heat exchanger, characterized by comprising:
a first heat exchanger core comprising: the heat exchanger comprises a first sub heat exchanger core and a second sub heat exchanger core, wherein each of the first sub heat exchanger core and the second sub heat exchanger core comprises a heat exchange tube, the heat exchange tubes of the first sub heat exchanger core and the second sub heat exchanger core are connected with each other, and orthographic projections of the first sub heat exchanger core and the second sub heat exchanger core on a plane where the second sub heat exchanger core is located are at least partially overlapped; and
a second heat exchanger core body, the second heat exchanger core body comprises a heat exchange tube, the heat exchange tube of the second heat exchanger core body is connected with the heat exchange tube of the second sub heat exchanger core body of the first heat exchanger core body,
and under the same air inlet speed, the ratio of the wind resistance of the heat exchanger to the air passing through the first heat exchanger core to the wind resistance of the heat exchanger to the air passing through the second heat exchanger core is smaller than a preset value.
2. The heat exchanger of claim 1, wherein:
each of the first and second sub heat exchanger cores of the first heat exchanger core further comprises fins;
the second heat exchanger core further comprises fins; and
at the same inlet wind speed, the wind resistance or the pressure drop caused by at least one part of at least one fin of the second heat exchanger core is larger than that caused by at least one part of at least one fin of the first heat exchanger core.
3. The heat exchanger of claim 1, wherein:
the cross-sectional area of at least one heat exchange tube of the second heat exchanger core is larger than the cross-sectional area of at least one heat exchange tube of the first heat exchanger core.
4. The heat exchanger of claim 1, further comprising:
the first wind resistance plate is positioned on one side of the second heat exchanger core in the thickness direction of the second heat exchanger core, and the orthographic projection of the first wind resistance plate and the orthographic projection of the second heat exchanger core on the plane of the second heat exchanger core are at least partially overlapped.
5. The heat exchanger of claim 4, further comprising:
the first sub heat exchanger core body of the first heat exchanger core body and the heat exchange tube of the second sub heat exchanger core body are connected through the connecting part,
the first wind resistance plate is positioned on one side, far away from the connecting part, of the first sub heat exchanger core body of the first heat exchanger core body in the length direction of the heat exchange tube of the first sub heat exchanger core body of the first heat exchanger core body.
6. The heat exchanger of claim 5, wherein:
the first wind resistance plate and the first sub heat exchanger core of the first heat exchanger core are positioned on the same side of the second sub heat exchanger core of the first heat exchanger core in the thickness direction of the second sub heat exchanger core of the first heat exchanger core.
7. The heat exchanger of claim 4, further comprising:
and the second wind resistance plate is at least partially overlapped with the orthographic projection of the first heat exchanger core on the plane where the second sub heat exchanger core of the first heat exchanger core is located.
8. The heat exchanger of claim 7, wherein:
the first wind resistance plate and the second wind resistance plate are located on one side, opposite to the first sub heat exchanger core, of the second sub heat exchanger core of the first heat exchanger core in the thickness direction of the second sub heat exchanger core of the first heat exchanger core, and the wind resistance of the second wind resistance plate is smaller than or equal to that of the first wind resistance plate under the same air inlet speed.
9. The heat exchanger of claim 1, further comprising:
a third wind blocker plate located between the first and second sub heat exchanger cores of the first heat exchanger core in a thickness direction of the second sub heat exchanger core of the first heat exchanger core.
10. The heat exchanger of claim 1, further comprising:
the first sub heat exchanger core body of the first heat exchanger core body is connected with the heat exchange tube of the second sub heat exchanger core body through the connecting part;
the first collecting pipe is connected with the heat exchange pipe of the second heat exchanger core body at one side of the second heat exchanger core body, which is far away from the second sub heat exchanger core body of the first heat exchanger core body; and
and the second collecting pipe is connected with the heat exchange pipe of the first sub heat exchanger core body of the first heat exchanger core body at one side of the first sub heat exchanger core body of the first heat exchanger core body, which is far away from the connecting part.
11. The heat exchanger of claim 10, wherein:
the cross-sectional area of the first collecting pipe is larger than that of the second collecting pipe.
12. The heat exchanger of claim 5 or 10, wherein:
the connecting part comprises a plurality of connecting pipes, and the heat exchange tube of the first sub heat exchanger core body of the first heat exchanger core body is connected with the heat exchange tube of the second sub heat exchanger core body of the first heat exchanger core body through the plurality of connecting pipes respectively.
13. The heat exchanger of claim 1, wherein:
at least one of the density of at least part of the fins, the width of the fins, the windowing angle, the number of the windowing and the length of the windowing of at least one fin of the second heat exchange core is greater than at least one of the density of at least part of the fins, the width of the fins, the windowing angle, the number of the windowing and the length of the windowing of at least one fin of the first heat exchange core.
14. An air conditioning system characterized by comprising:
the heat exchanger of claim 1.
15. The air conditioning system of claim 14, wherein:
the heat exchanger further comprises:
the first sub heat exchanger core body of the first heat exchanger core body is connected with the heat exchange tube of the second sub heat exchanger core body through the connecting part;
the first collecting pipe is connected with the heat exchange pipe of the second heat exchanger core body at one side of the second heat exchanger core body, which is far away from the second sub heat exchanger core body of the first heat exchanger core body; and
and the second collecting pipe is connected with the heat exchange pipe of the first sub heat exchanger core body of the first heat exchanger core body at one side of the first sub heat exchanger core body of the first heat exchanger core body, which is far away from the connecting part.
16. The air conditioning system of claim 15, wherein:
the first header and the second header are arranged horizontally in use.
17. The air conditioning system of claim 14, wherein:
the heat exchanger further comprises:
the first collecting pipe is connected with the heat exchange pipe of the second heat exchanger core body at one side of the second heat exchanger core body, which is far away from the second sub heat exchanger core body of the first heat exchanger core body,
wherein the first header is arranged horizontally in use and below the second heat exchanger core in use.
18. The air conditioning system of claim 15, wherein:
in use, the first header is below a second heat exchanger core, and the second header is below a second sub-heat exchanger core of the first heat exchanger core.
19. The air conditioning system of claim 15, wherein:
in use, the first header is above a second heat exchanger core, and the second header is above a second sub-heat exchanger core of the first heat exchanger core.
20. The air conditioning system of claim 14, wherein:
the second heat exchanger core and the second sub heat exchanger core of the first heat exchanger core are located upstream of the first sub heat exchanger core of the first heat exchanger core, in use, in a direction of air flow through the heat exchanger.
21. The air conditioning system of claim 14, wherein:
the second heat exchanger core and the second sub heat exchanger core of the first heat exchanger core are located downstream of the first sub heat exchanger core of the first heat exchanger core, in use, in a direction of air flow through the heat exchanger.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022511650.6U CN214333108U (en) | 2020-11-03 | 2020-11-03 | Heat exchanger and air conditioning system with same |
| PCT/CN2021/123738 WO2022095671A1 (en) | 2020-11-03 | 2021-10-14 | Heat exchanger and air conditioning system having same |
| EP21888368.4A EP4242556A1 (en) | 2020-11-03 | 2021-10-14 | Heat exchanger and air conditioning system having same |
| MX2023004490A MX2023004490A (en) | 2020-11-03 | 2021-10-14 | Heat exchanger and air conditioning system having same. |
| US18/251,489 US20240003630A1 (en) | 2020-11-03 | 2021-10-14 | Heat exchanger and air conditioning system having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022511650.6U CN214333108U (en) | 2020-11-03 | 2020-11-03 | Heat exchanger and air conditioning system with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214333108U true CN214333108U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022511650.6U Active CN214333108U (en) | 2020-11-03 | 2020-11-03 | Heat exchanger and air conditioning system with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214333108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022095671A1 (en) * | 2020-11-03 | 2022-05-12 | 丹佛斯有限公司 | Heat exchanger and air conditioning system having same |
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2020
- 2020-11-03 CN CN202022511650.6U patent/CN214333108U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022095671A1 (en) * | 2020-11-03 | 2022-05-12 | 丹佛斯有限公司 | Heat exchanger and air conditioning system having same |
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