CN213578872U - Heat exchanger assembly and rail transit air conditioning unit - Google Patents

Abstract

The utility model relates to a heat exchanger assembly, including casing, heat exchange tube assembly and heat transfer fan. The air flow can enter the shell through the air inlet under the driving of the heat exchange fan, and is discharged through the air outlet after heat exchange is carried out on the air flow and the heat exchange pipe assembly, so that the heat exchange between the heat exchanger assembly and the external environment is realized. The heat exchange fan is positioned in the accommodating part, and the cross-sectional area of the accommodating part is gradually increased along the direction of the bottom wall pointing to the top wall. That is to say, the space for installing the blades of the heat exchange fan in the accommodating part is larger, so the size of the blades can be increased, and the rotating speed of the blades can be reduced on the premise of ensuring the same air supply effect. In addition, in the process of flowing from the accommodating part to the air outlet, the flow velocity can be gradually reduced because the flow area is gradually increased, thereby reducing the flow noise. Therefore, the heat exchanger assembly can remarkably reduce noise. Furthermore, the utility model also provides a rail traffic air conditioning unit.

Description

Heat exchanger assembly and rail transit air conditioning unit

Technical Field

The utility model relates to an air conditioning technology field, in particular to heat exchanger assembly and rail traffic air conditioning unit.

Background

The air conditioning unit generally includes an evaporator, a condenser and a compressor, and indoor heat is transferred from the evaporator to the condenser by the compressor, and heat in the condenser is discharged by a condensing fan. Rail vehicles, such as subways, also employ air conditioning units for temperature regulation. Moreover, the air conditioning unit of the rail vehicle, namely the rail vehicle air conditioning unit has more strict requirements on noise.

Therefore, the rail transit air conditioning unit needs to be subjected to strict noise tests before being shipped out of a factory. The condensing fan is generally installed in the gap of the condensing pipe, and because the gap is small and the ventilation is poor, the condensing fan needs to rotate at a high speed in order to ensure that the heat is smoothly taken away. However, the high-speed rotation of the condensing fan generates a large noise, and the noise of the condensing fan is a main noise source of the rail-mounted air conditioning unit, so that the noise of the rail-mounted air conditioning unit is also too large.

SUMMERY OF THE UTILITY MODEL

Therefore, a heat exchanger assembly capable of reducing noise is needed to solve the problem of high noise of the existing rail transit air conditioning unit.

A heat exchanger assembly comprising:

the air conditioner comprises a shell, a fan and a fan, wherein the outer wall of the shell comprises a bottom wall and a top wall opposite to the bottom wall, the outer wall of the shell is provided with an air inlet communicated with the inside of the shell, and the top wall is provided with an air outlet;

the heat exchange tube assembly is accommodated and fixed in the shell, the heat exchange tube assembly is enclosed into an accommodating part in the shell, and the cross section area of the accommodating part is gradually increased along the direction from the bottom wall to the top wall; and

the heat exchange fan is fixed on the shell and located in the accommodating portion, the heat exchange fan comprises blades, and the blades are opposite to the air outlet.

In one embodiment, the outer wall of the housing further includes a side wall connecting the bottom wall and the top wall, and the air inlet is located in the bottom wall and the side wall.

In one embodiment, the air inlet on the bottom wall is located in a projection area of the heat exchange tube assembly on the bottom wall.

In one embodiment, an openable metal plate upper cover is arranged on the surface of the top wall and in a position corresponding to the heat exchange tube assembly, and anti-slip strips are arranged on the surface of the metal plate upper cover.

In one embodiment, the air outlet is covered with a protective cover which can penetrate air.

In one embodiment, the heat exchange tube assembly comprises two heat exchange tube rows, each heat exchange tube row comprises a plurality of parallel strip-shaped tube bodies, and the two heat exchange tube rows are arranged oppositely and obliquely to each other so as to form the accommodating part between the two heat exchange tube rows.

In one embodiment, a plurality of the strip-shaped tube bodies in each of the heat exchange tube rows are arranged in a matrix of a plurality of rows and a plurality of columns.

In one embodiment, the top wall is provided with a plurality of air outlets arranged at intervals, the heat exchanger assembly comprises a plurality of heat exchange fans, and the heat exchange fans are arranged in the same accommodating part at intervals and are respectively arranged corresponding to the air outlets;

or, the heat exchange tube assembly is in enclose to establish into a plurality of intervals in the casing and set up the portion of acceping, it is a plurality of heat exchange fan accepts respectively in a plurality of the portion of acceping just respectively with a plurality of the air exit corresponds the setting.

According to the heat exchanger component, air flow can enter the shell through the air inlet under the driving of the heat exchange fan, and is discharged through the air outlet after heat exchange is carried out on the air flow and the heat exchange pipe component, so that heat exchange between the heat exchanger component and the external environment is realized. The heat exchange fan is positioned in the accommodating part, and the cross-sectional area of the accommodating part is gradually increased along the direction of the bottom wall pointing to the top wall. That is to say, the space for installing the blades of the heat exchange fan in the accommodating part is larger, so the size of the blades can be increased, and the rotating speed of the blades can be reduced on the premise of ensuring the same air supply effect. In addition, in the process of flowing from the accommodating part to the air outlet, the flow velocity can be gradually reduced because the flow area is gradually increased, thereby reducing the flow noise. Therefore, the heat exchanger assembly can remarkably reduce noise.

Furthermore, the utility model also provides a rail traffic air conditioning unit. The rail transit air conditioning unit comprises a condenser, an evaporator and a compressor connected with the condenser and the evaporator, wherein the condenser is the heat exchanger assembly in any one of the preferred embodiments.

In one embodiment, the heat exchange tube assembly further comprises a waste discharge assembly arranged at one end of the condenser, the waste discharge assembly comprises a waste discharge cavity and a waste exhaust fan, a waste gas inlet and a waste gas outlet are formed in the waste discharge cavity, and the waste gas outlet faces the heat exchange tube assembly.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a rail transit air conditioning unit according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural view of the rail transit air conditioning unit shown in fig. 1, in which a metal plate upper cover is removed;

FIG. 3 is an isometric view of the rail transit air conditioning unit of FIG. 2;

FIG. 4 is a cross-sectional view taken along B-B of the rail air conditioning unit of FIG. 2;

fig. 5 is a cross-sectional view taken along a-a of the rail air conditioning unit of fig. 2.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

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 based on the orientation or positional relationship shown in 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, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, the present invention provides a rail transit air conditioning unit 10 and a heat exchanger assembly 100. The rail air conditioning unit 10 includes a condenser, an evaporator 200, and a compressor 300 connecting the condenser and the evaporator 200, and the heat exchanger assembly 100 serves as the condenser of the rail air conditioning unit 10.

The condenser and evaporator 200 is mounted to the vehicle cabin, typically at the top of the cabin. The compressor 300 may drive a medium (e.g., freon) to circulate between the evaporator 200 and the condenser. During cooling, the medium in the evaporator 200 absorbs heat in the vehicle compartment, and the compressor 300 applies work to transfer the medium containing heat to the condenser, and finally the medium condenses in the condenser and emits the heat to the external environment. The rail air conditioning unit 10 may also perform heating, in which the condenser absorbs heat from the outside of the vehicle compartment, and transfers a medium containing heat to the evaporator 200 by applying work from the compressor 300, and the medium in the evaporator 200 condenses and radiates heat into the vehicle compartment.

It can be seen that in other application scenarios, the heat exchanger assembly 100 may also be used as an evaporator. That is, the medium flowing through the heat exchanger assembly 100 absorbs heat by evaporation.

Referring to fig. 2 to 4, the heat exchanger assembly 100 according to the preferred embodiment of the present invention includes a housing 110, a heat exchange tube assembly 120 and a heat exchange fan 130.

The housing 110 is generally molded from a plastic, resin, or metal material and may be assembled from multiple parts. In the rail air conditioning unit 10, the housing 110 may be integrally formed with the evaporator 200 and the outer shell of the compressor 300. The outer wall of the housing 110 includes a bottom wall (not shown) and a top wall (not shown) opposite the bottom wall. As shown in fig. 3, the top wall is an upwardly facing wall and the bottom wall is a downwardly facing wall.

Further, the outer wall of the housing 110 is provided with an air inlet 101 communicated with the inside of the housing 110, and the top wall is provided with an air outlet 102. The external air can enter the housing 110 through the air inlet 101, and is exhausted from the air outlet 102 after heat exchange.

The medium can flow in the heat exchange tube assembly 120, and the outside air entering the housing 110 from the air inlet 101 can exchange heat with the medium in the heat exchange tube assembly 120. The heat exchange tube assembly 120 is accommodated and fixed in the housing 110, and an accommodating portion (not shown) is formed in the housing 110. Moreover, the cross-sectional area of the receiving portion gradually increases in a direction from the bottom wall toward the top wall.

The direction pointing along the bottom wall towards the top wall is referred to as the first direction. The cross-sectional area of the accommodating portion means an area of a cross-section obtained by cross-sectioning the accommodating portion in a second direction perpendicular to the first direction. As shown in fig. 4, the cross section of the accommodating portion gradually increases in the downward direction.

The heat exchange pipe assembly 120 may have various forms, and it is sufficient that the medium smoothly circulates and forms a receiving part in the housing 110.

In this embodiment, the heat exchange tube assembly 120 includes two heat exchange tube rows 121, each heat exchange tube row 121 includes a plurality of parallel strip-shaped tube bodies 123, and the two heat exchange tube rows 121 are disposed oppositely and inclined to each other to form a receiving portion between the two heat exchange tube rows 121.

The strip-shaped pipe body 123 is generally a hollow circular tubular structure, and the plurality of strip-shaped pipe bodies 123 can be communicated through elbows to ensure smooth circulation of media. The heat exchange tube bank 121 is substantially plate-shaped as a whole. Therefore, when the two heat exchange tube rows 121 are disposed opposite to each other and inclined to each other, an inverted-splayed structure may be formed, and the receiving portion is formed between the two heat exchange tube rows 121.

As can be seen from fig. 4, in the direction from bottom to top, the two heat exchange tube rows 121 are flared relative to each other, so that the cross-sectional area of the receiving portion gradually increases.

It should be noted that in other embodiments, the heat exchange tube assembly 120 may have other forms. Such as: the number of the heat exchange tube rows 121 may be three or more, and the plurality of heat exchange tube rows 121 are inclined to each other, so that a receiving portion according to the requirement may be still formed.

Alternatively, the heat exchange tube assembly 120 comprises a spiral tube body that spirals upward, and the medium can flow in the spiral tube body. In the first direction, the diameter of each turn of the spiral pipe body gradually increases. Thus, the coil body will surround a substantially "trumpet" shaped housing. At this time, the cross-sectional area of the accommodating portion in the first direction still satisfies the requirement of gradually increasing.

Further, in this embodiment, the plurality of strip-shaped tube bodies 123 in each heat exchange tube row 121 are arranged in a matrix form with a plurality of rows and a plurality of columns. That is, each heat exchange tube row 121 has a multi-layered structure. When the external air passes through the heat exchanger assembly 120, the contact time between the external air and the strip-shaped pipe body 123 is prolonged, the contact area is increased, and therefore, the heat exchange efficiency is higher.

The heat exchange fan 130 is fixed to the housing 110 and is located in the accommodating portion. Therefore, the heat exchange fan 130 is located at the middle of the heat exchanger assembly 120. The heat exchange fan 130 includes a blade 131, and the blade 131 is disposed opposite to the air outlet 102. The exhaust outlet 102 is generally circular and matches the movement path of the edge of the blade 131. The blades 131 generate a large suction force when rotating, thereby sucking external air from the air inlet 101 and discharging the air from the air outlet 102.

Referring to fig. 1 again, in the embodiment, the air outlet 102 is covered with a protective cover 111. The shield 111 may be a metal mesh structure formed by overlapping a plurality of wires. On the premise of ensuring smooth airflow, the protective cover 111 can prevent other objects from falling into the blade 131, thereby protecting the blade 131.

In addition, in order to improve the heat exchange efficiency, in this embodiment, the heat exchanger assembly 100 includes a plurality of heat exchange fans 130, the top wall is provided with a plurality of air outlets 102 arranged at intervals, and the plurality of heat exchange fans 130 correspond to the plurality of air outlets 102 one to one. The plurality of heat exchange fans 130 may simultaneously drive the air to flow, thereby increasing the circulation efficiency of the air to improve the heat exchange effect.

The heat exchange fans 130 are disposed in the same accommodating portion at intervals and respectively correspond to the air outlets 102. As shown in fig. 3, the two heat exchange fans 130 are located in the same accommodating portion and are spaced apart from each other.

Obviously, in other embodiments, the heat exchange tube assembly 120 may be enclosed in the housing 110 to form a plurality of receiving portions arranged at intervals, and the plurality of heat exchange fans 130 are respectively received in the plurality of receiving portions and respectively arranged corresponding to the plurality of air outlets 102. The plurality of accommodating parts are independent from each other, so that the working process of each heat exchange fan 130 is also independent from each other. Therefore, the mutual interference between the adjacent heat exchange fans 130 can be effectively avoided, and the negative influence on the heat exchange effect caused by repeated heat exchange of air is avoided.

The bottom of the heat exchange fan 130 is fixed in the bottom wall of the casing 110. Moreover, the blades 131 of the heat exchange fan 130 are close to the top wall of the housing 110. Moreover, the cross-sectional area of the receiving portion gradually increases in a direction from the bottom wall toward the top wall. That is, the space for installing the blades 131 of the heat exchange fan 130 in the accommodating portion is larger, so that the size of the blades 131 can be increased compared to the conventional heat exchange fan. On the premise of ensuring the same air supply effect, the rotating speed of the blades 131 can be reduced after the sizes of the blades 131 are increased. The rotation speed of the blades 131 is reduced, and the noise generated when the heat exchange fan 130 operates is significantly reduced.

In addition, when the air flows toward the air outlet 102 under the driving of the heat exchange fan 130, the cross section of the accommodating portion gradually increases, so that the flow area of the air flow also gradually increases. The flow velocity of the air flow is gradually reduced along with the gradual increase of the flow area. Also, the flow rate of the air is minimized when the air reaches the exhaust vent 102. In this way, the airflow sound may also be significantly reduced as the air is exhausted from the exhaust outlet 102. Therefore, the noise generated when the heat exchange fan 130 operates is further reduced.

Referring to fig. 3 again, in the present embodiment, the outer wall of the housing 110 further includes a side wall (not shown) connecting the bottom wall and the top wall, and the air inlet 101 is located on the bottom wall and the side wall.

Outside air will realize the air inlet from the diapire and the lateral wall of casing 110, and the air intake 101 is not established to the roof of casing 110, so can set up to full sheet metal construction. Thus, the strength of the upper portion of the heat exchanger assembly 100 is increased enough for maintenance personnel to stand and walk. For maintenance personnel, the walking space is greatly increased, and the maintenance and inspection of the maintenance personnel are greatly facilitated. Moreover, the top wall is provided with a full sheet metal structure, which can effectively protect the heat exchange tube assembly 120, so that the heat exchanger assembly 100 can be used in severe environments (sand, dust, etc.). Compared with the conventional condenser, the time for the heat exchange tube assembly 120 to become dirty is prolonged, that is, the degree of cleanliness is high in the same time, so that the heat exchange efficiency can be guaranteed.

In addition, in the case of including a plurality of heat exchange fans 130, mutual wind snatching is often caused in the conventional condenser because the space between the fans is not large enough. And the resistance change is easy to disperse wind, namely the fan is easy to blow wind horizontally instead of vertically upwards. After air is introduced from the bottom wall and the side wall of the casing 110, the heat exchange fan 130 reduces the risk that air is sucked again for repeated heat exchange even if the air is blown horizontally.

Further, in this embodiment, the air inlet 101 on the bottom wall is located in the projected area of the heat exchange tube assembly 120 on the bottom wall.

That is, the air inlet 101 on the bottom wall faces the heat exchange tube assembly 120. Therefore, both the condensed water on the heat exchange tube assembly 120 and the defrosting water generated during defrosting of the heat exchanger assembly 100 can directly fall into the air inlet 101 on the bottom wall. That is, the air inlet 101 on the bottom wall can perform the function of fast draining while performing the function of air inlet.

Further, referring to fig. 1 again, in the present embodiment, an openable metal plate upper cover 112 is disposed on a surface of the top wall corresponding to the heat exchange tube assembly 120, and an anti-slip strip 113 is disposed on a surface of the metal plate upper cover 112.

The metal plate upper cover 112 can be connected with other parts of the housing 110 by means of clamping or screw fastening. In a conventional state, the metal plate upper cover 112 covers the heat exchange tube assembly 120, and people can stand or walk on the metal plate upper cover. When the heat exchange tube assembly 120 needs to be serviced, the sheet metal upper cover 112 may be removed from the housing 110, thereby exposing the interior of the housing 110.

In addition, the antislip strips 113 may be rubber strips adhered to the surface of the sheet metal upper cover 112, or may be raised strips integrally formed with the sheet metal upper cover 112. The anti-slip strips 113 can increase friction force, so that maintenance personnel can stand or walk on the sheet metal upper cover 112 more safely.

Referring to fig. 5, in the present embodiment, the rail air conditioning unit 10 further includes a waste discharge assembly 400 disposed at one end of the condenser. The exhaust assembly 400 includes an exhaust cavity 410 and an exhaust fan 420, wherein the exhaust cavity 410 is provided with an exhaust gas inlet (not shown) and an exhaust gas outlet (not shown), and the exhaust gas outlet faces the heat exchange tube assembly 120.

The waste discharge chamber 410 may be integrally formed with the housing 110, or may be separately formed and then connected by means of screw fastening, etc. The exhaust assembly 400 is used for exhausting exhaust gas (unclean air) in the vehicle compartment, and the exhaust gas in the vehicle compartment is subjected to heat exchange by the rail air conditioning unit 10, so that the temperature is low.

When the rail transit air conditioning unit 10 is installed, the waste gas inlet of the waste discharge cavity 410 is communicated with the interior of the carriage. When the exhaust blower 420 is activated, the exhaust air in the cabin enters the exhaust cavity 410 through the exhaust air inlet and is blown to the heat exchange tube assembly 120 through the exhaust air outlet. Since the temperature of the exhaust gas in the vehicle compartment is relatively low, the heat carried by the medium of the heat exchange tube assembly 120 can be effectively absorbed by adopting the heat exchange between the part of the exhaust gas and the heat tube assembly 120. Moreover, by utilizing the waste gas, the waste of energy can be avoided.

Further, in the present embodiment, two exhaust fans 420 are disposed in the exhaust cavity 410, and the two exhaust fans 420 are separated by a partition 411, and each exhaust fan 420 corresponds to an exhaust gas inlet and an exhaust gas outlet, respectively. Thus, the operation of the two exhaust fans 420 is independent.

The exhaust gas discharged from the two exhaust gas outlets may flow to the two heat exchange tube banks 121, respectively, thereby effectively improving the utilization rate of the exhaust gas. The arrows in fig. 5 show the flow direction of the two exhaust gas streams. In addition, in order to prevent water leakage, rainwater separators may be provided in the flow paths of the two exhaust gas flows.

In the rail air conditioning unit 10 and the heat exchanger assembly 100, the air flow driven by the heat exchange fan 130 can enter the casing 110 through the air inlet 101, exchange heat with the heat exchange tube assembly 120, and then be discharged through the air outlet 102, thereby realizing heat exchange between the heat exchanger assembly and the external environment. The heat exchange fan 130 is located in the receiving portion, and the cross-sectional area of the receiving portion is gradually increased in a direction toward the top wall along the bottom wall. That is, the space for installing the blades 131 of the heat exchange fan 130 in the accommodating portion is larger, so the size of the blades 131 can be increased, and the rotating speed of the blades 131 can be reduced on the premise of ensuring the same air supply effect. In addition, since the flow area of the air flow gradually increases as the air flow flows from the housing portion to the air outlet 102, the flow velocity gradually decreases, and the flow noise can also be reduced. Therefore, the heat exchanger assembly 100 described above can significantly reduce noise.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A heat exchanger assembly, comprising:

the air conditioner comprises a shell, a fan and a fan, wherein the outer wall of the shell comprises a bottom wall and a top wall opposite to the bottom wall, the outer wall of the shell is provided with an air inlet communicated with the inside of the shell, and the top wall is provided with an air outlet;

the heat exchange tube assembly is accommodated and fixed in the shell, the heat exchange tube assembly is enclosed into an accommodating part in the shell, and the cross section area of the accommodating part is gradually increased along the direction from the bottom wall to the top wall; and

the heat exchange fan is fixed on the shell and located in the accommodating portion, the heat exchange fan comprises blades, and the blades are opposite to the air outlet.

2. The heat exchanger assembly of claim 1, wherein the outer wall of the housing further comprises a side wall connecting the bottom wall and the top wall, the air inlet being located in the bottom wall and the side wall.

3. The heat exchanger assembly as claimed in claim 2, wherein the air inlet in the bottom wall is located in a projected area of the heat exchange tube assembly on the bottom wall.

4. The heat exchanger assembly according to claim 2, wherein an openable sheet metal upper cover is arranged on the surface of the top wall corresponding to the heat exchange tube assembly, and anti-slip strips are arranged on the surface of the sheet metal upper cover.

5. The heat exchanger assembly of claim 1, wherein the exhaust outlet is covered with a wind-permeable protective cover.

6. The heat exchanger assembly according to claim 1, wherein the heat exchange tube assembly comprises two heat exchange tube rows, each of the heat exchange tube rows comprising a plurality of parallel arranged strip-shaped tube bodies, the two heat exchange tube rows being arranged opposite and inclined to each other to form the receiving portion between the two heat exchange tube rows.

7. The heat exchanger assembly as claimed in claim 6, wherein the plurality of strip-shaped tubular bodies in each of the heat exchange tube rows are arranged in a matrix form of a plurality of rows and a plurality of columns.

8. The heat exchanger assembly according to any one of claims 1 to 7, wherein the top wall is provided with a plurality of the air outlets arranged at intervals, the heat exchanger assembly comprises a plurality of the heat exchange fans, and the plurality of the heat exchange fans are arranged in the same accommodating portion at intervals and are respectively arranged corresponding to the plurality of the air outlets;

or, the heat exchange tube assembly is in enclose to establish into a plurality of intervals in the casing and set up the portion of acceping, it is a plurality of heat exchange fan accepts respectively in a plurality of the portion of acceping just respectively with a plurality of the air exit corresponds the setting.

9. A rail-mounted air conditioning unit comprising a condenser, an evaporator and a compressor connecting the condenser and the evaporator, wherein the condenser is the heat exchanger assembly of any one of claims 1 to 8.

10. The rail-mounted air conditioning unit according to claim 9, further comprising a waste discharge assembly disposed at one end of the condenser, wherein the waste discharge assembly comprises a waste discharge cavity and a waste exhaust fan, the waste discharge cavity is provided with a waste gas inlet and a waste gas outlet, and the waste gas outlet faces the heat exchange tube assembly.

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