WO2016192653A1

WO2016192653A1 - Heat exchanger system

Info

Publication number: WO2016192653A1
Application number: PCT/CN2016/084500
Authority: WO
Inventors: 刘玉宝; 陆向迅; 杨静; 李艳星
Original assignee: 丹佛斯微通道换热器（嘉兴）有限公司
Priority date: 2015-06-03
Filing date: 2016-06-02
Publication date: 2016-12-08
Also published as: US20180172364A1; EP3306233A4; CN106288893A; EP3306233A1

Abstract

A heat exchanger system (110), comprising sequentially arranged from top to bottom: an upper manifold (10), an intermediate manifold (30) and a lower manifold (20), wherein a first heat exchange tube (41) is provided between the upper manifold (10) and the intermediate manifold (30), and a second heat exchange tube (42) is provided between the intermediate manifold (30) and the lower manifold (20). The intermediate manifold (30) has a first cavity (31) and a second cavity (32) that are independent of each other. During a refrigerant circulation, the refrigerant in the upper manifold (10) flows down from the first heat exchange tube (41) to the first cavity (31), and flows into a cavity of the lower manifold (20) via a first communication component (51), and then the refrigerant flows up from the second heat exchange tube (42) to the second cavity (32), and flows back into the upper manifold (10) via a second communication component (52).

Description

Heat exchanger system

The present application claims priority to Chinese Patent Application No. 20151030377, filed on Jun.

Technical field

The present invention relates to the field of refrigeration, and more particularly to a heat exchanger system for a base station air conditioner.

Background technique

Energy shortages have become an important factor constraining the development of the national economy. Saving energy and improving energy efficiency have become an important issue in China's national economy. The application of heat pipe technology (when the outdoor ambient temperature is lower than the indoor room temperature by a certain value, about 5 ° C or more, the heat pipe is enabled), can reduce the running time of the compressor, achieve the purpose of energy saving and consumption, and prolong the service life of the compressor.

Currently, a split heat pipe heat exchanger is known. The hot fluid is indoor hot air, and the refrigerant in the heat exchange tube is heated to become refrigerant vapor; the steam rises and is condensed into a refrigerant liquid after being exchanged with the outdoor cold air in the condenser; the refrigerant liquid enters the evaporator to absorb heat. The heat pipe is thus formed to achieve refrigeration.

However, the split heat pipe heat exchanger has a long connecting pipe between the two heat exchangers and is high in cost; it is required to be placed in the whole unit and requires a large installation space.

Summary of the invention

Accordingly, it is an object of the present invention to provide a heat exchanger system that addresses or at least alleviates the above disadvantages.

According to an aspect of the invention, there is provided a heat exchanger system comprising an upper header, an intermediate header and a lower header, which are arranged in order from top to bottom, and an upper header and a first heat exchange tube is disposed between the intermediate headers, and a second heat exchange tube is disposed between the intermediate headers and the lower headers.

The intermediate header has a first cavity and a second cavity that are independent of each other,

During the circulation of the refrigerant, the refrigerant in the upper header flows downward from the first heat exchange tube into the first chamber, and flows into the chamber of the lower header via the first communication member. The refrigerant then flows upward from the second heat exchange tube into the second chamber, and then flows back into the upper header via the second communication member.

In one example, the first communication member is a communication tube or a socket for communicating.

In one example, the second communication member is a communication tube or a socket for communicating.

In one example, the first communication member is at least one round tube or flat tube disposed between the lower header and the intermediate header, and the tube or the tube is aligned with the second heat exchange tube The row is disposed between the lower header and the intermediate header; and/or

The second communication component is at least one circular tube or flat tube disposed between the upper header and the intermediate header, and the circular tube or the flat tube and the first heat exchange tube are arranged in a row and arranged in the upper set Between the flow tube and the intermediate header.

In one example, the upper header and the intermediate header and the first heat exchange tube therebetween constitute a first heat exchanger, preferably a condenser, the intermediate header and a lower header, and The second heat exchange tube between them constitutes a second heat exchanger, preferably an evaporator.

In one example, the intermediate header is separated into the first by a main partition extending obliquely, vertically, curvedly or meandering from an upper portion of the intermediate header to a lower portion of the intermediate header a cavity and the second cavity.

In one example, the intermediate header is separated into the first cavity by a main partition extending from one end of the intermediate header in a longitudinal direction of the intermediate header to the other end of the intermediate header And the second cavity.

In one example, the main partition is provided with a first opening and a second opening, and refrigerant from the first heat exchanger enters from the first cavity to the second through the first opening In the heat exchanger, refrigerant flowing out of the second heat exchanger flows into the second cavity and enters the first heat exchanger via the second opening.

In one example, a flat tube or a tube for communication between the intermediate header and the lower header in the second heat exchanger is used as a first communication member, in the second heat exchanger One end of the flat tube or tube for communication is inserted through the first opening into the first cavity, and the other end is connected to the cavity of the lower header; and/or

A flat tube or a tube for communication between the intermediate header and the upper header in the first heat exchanger serves as a second communication member for communication in the first heat exchanger One end of the flat tube or the circular tube is inserted through the second opening into the second cavity, and the other end is connected to the cavity of the upper header.

In one example, the first communication component is a first connector that communicates the cavity of the lower header and the first cavity of the intermediate header, and/or the second communication component is a cavity that communicates with the upper header and a second nozzle of the second cavity of the intermediate header.

In one example, a liquid dispensing structure that dispenses fluid from the first nozzle is disposed in the cavity of the lower header.

In one example, the liquid-distributing structure is a draft tube connected or integrally formed with the first nozzle, the diversion flow The tube is provided with an opening that is spaced apart.

In one example, the intermediate header further includes at least one communication cavity for separating the cavity of the intermediate header, at least one of the first cavity, and at least one of the The second chamber is provided with at least one sub-baffle between the main partition and the upper wall and/or the lower wall of the intermediate header.

In one example, the first cavity and the second cavity are in communication with the at least one communication cavity through a first opening and a second opening on the main partition, respectively, the at least one communication cavity and the corresponding first A communicating member or a second communicating member is in communication.

In one example, the first heat exchanger and/or the second heat exchanger are bent, preferably bending a first heat exchange tube in the first heat exchanger and/or the second heat exchanger and/or Or a second heat exchange tube; or

The first heat exchange tubes and the second heat exchange tubes are inserted obliquely into each other into the intermediate header.

According to another aspect of the present invention, there is provided another heat exchanger system including an upper header, a first intermediate header, and a second intermediate header arranged in order from top to bottom And a lower collecting pipe, a first heat exchange tube is disposed between the upper collecting pipe and the first intermediate collecting pipe, and a second heat exchange pipe is disposed between the second intermediate collecting pipe and the lower collecting pipe,

The first intermediate header is provided with a first partition that divides the first intermediate header into at least one first cavity and at least one first communication cavity independent of each other, the second intermediate current The tube is provided with a second partition separating the second intermediate header into at least one second cavity and at least one second communication cavity independent of each other;

During the refrigerant cycle, the refrigerant in the upper header flows downward from the first heat exchange tube into the first chamber, enters the second communication chamber via the first connecting tube, and passes through the first communication The component flows into the cavity of the lower header, after which the refrigerant flows upward from the second heat exchange tube into the second cavity, enters the first communication cavity via the second connecting pipe, and further passes through the second communication The component returns into the upper header.

In one example, the first communication member is at least one round tube or flat tube disposed between the lower header and the second intermediate header, and the tube or the tube and the second tube Arranged in a row between the lower header and the second intermediate header; and/or

The second communication component is at least one circular tube or flat tube disposed between the upper header and the first intermediate header, and the circular tube or the flat tube is arranged in a row with the first heat exchange tube Between the upper header and the first intermediate header.

In one example, the upper header and the first intermediate header and the first heat exchange tube structure therebetween The first heat exchanger, preferably a condenser, the second intermediate header and the lower header and the second heat exchange tube therebetween form a second heat exchanger, preferably an evaporator.

The first heat exchange tubes and the second heat exchange tubes are inserted obliquely with respect to each other into the corresponding first intermediate header and second intermediate header.

DRAWINGS

These and/or other aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic structural view of a first heat exchanger system according to a first embodiment of the present invention;

2 is a schematic structural view of a second heat exchanger system according to a first embodiment of the present invention;

Figure 3 is a schematic structural view of a third heat exchanger system according to a first embodiment of the present invention;

Figure 4 is a schematic structural view of a fourth heat exchanger system according to a first embodiment of the present invention;

Figure 5 is a schematic structural view of a fifth heat exchanger system according to a first embodiment of the present invention;

Figure 6 is a schematic structural view of a sixth heat exchanger system according to a first embodiment of the present invention;

Figure 7 is a schematic structural view of a seventh heat exchanger system according to a first embodiment of the present invention;

Figure 8 is a schematic structural view of a heat exchanger system according to a second embodiment of the present invention;

Figure 9 is a schematic structural view of a heat exchanger system in accordance with a third embodiment of the present invention.

detailed description

The technical solution of the present invention will be further specifically described below by way of embodiments and with reference to FIGS. 1-9. In the description, the same or similar reference numerals indicate the same or similar parts. The description of the embodiments of the present invention with reference to the accompanying drawings is intended to illustrate the general inventive concept of the invention, and should not be construed as a limitation of the invention.

Referring to Figure 1, a schematic structural view of a first heat exchanger system 110 in accordance with a first embodiment of the present invention is shown. Specifically, the first heat exchanger system 110 includes an upper header 10, an intermediate header 30, and a lower header 20 that are arranged in order from top to bottom. A first heat exchange tube 41 is disposed between the upper header 10 and the intermediate header 30, and a second heat exchange tube 42 is disposed between the intermediate header 30 and the lower header 20.

As shown, the intermediate header 30 has a first cavity 31 and a second cavity 32 that are independent of one another. In During the circulation of the refrigerant (the arrows in Fig. 1 show the direction in which the refrigerant flows, the direction in which the refrigerant flows are shown in this manner below, which will not be described in detail), the upper header 10 The refrigerant in the lower flow flows from the first heat exchange tube 41 into the first cavity 31, flows into the cavity of the lower header 20 via the first communication member 51, and thereafter the refrigerant is from the second The heat exchange tubes 42 flow upward into the second chamber 32, and are further returned to the upper header 10 via the second communication member 52.

Here, it should be noted that the first communication member 51 and the second communication member 52 may be communication pipes or nozzles that function as communication. Preferably, as shown in FIG. 1, the first communication member 51 is at least one round tube or flat tube disposed between the lower header 20 and the intermediate header 30, and the tube or the tube is The second heat exchange tubes 42 are arranged in a row between the lower header 20 and the intermediate header 20. The second communication member 52 is at least one round tube or flat tube disposed between the upper header 10 and the intermediate header 30, and the tube or the flat tube and the first heat exchange tube 41 are arranged in a row It is disposed between the upper header 10 and the intermediate header 30.

The upper header 10 and the intermediate header 30 and the first heat exchange tube 41 therebetween constitute a first heat exchanger, the intermediate header 30 and the lower header 20 and a portion therebetween The two heat exchange tubes 42 constitute a second heat exchanger. In the present invention, for the purpose of explanation, the first heat exchanger is referred to as a condenser and the second heat exchanger is referred to as an evaporator. Of course, those skilled in the art can set the first and second heat exchangers as condensers, evaporators or other types of heat exchangers as needed, and the present invention does not impose any limitation thereon.

The first heat exchange tube 41 and the second heat exchange tube 42 may be any type of heat exchange tubes. Generally, the first heat exchange tube 41 and the second heat exchange tube 42 are selected to be any one of a round tube and a flat tube. In the same heat exchanger system, the first heat exchange tube 41 and the second heat exchange tube 42 need not be disposed in the same type of heat exchange tubes, for example, they are not necessarily all round tubes or flat tubes, and one of them may be a circle. The tube, and the other is a flat tube, it is also possible that some of the first and second

heat exchange tubes

41, 42 are round tubes, and the other portion is a flat tube. That is, the first and second

heat exchange tubes

41, 42 described herein can be provided as any type of feasible heat exchange tubes as needed, and the present invention does not impose any particular limitation.

In addition, fins may be disposed between the adjacent two first heat exchange tubes 41 or the adjacent two second heat exchange tubes 42 regardless of the type of the heat exchange tubes.

It can be understood that if the first heat exchange tube 41 and the second communication member 52 are both disposed, for example, as a circular tube and/or a flat tube, the first heat exchange tube 41 and the second communication member 52 may be arranged in a row. Between the upper header 10 and the intermediate header 30, as shown in FIG. Similarly, if the second heat exchange tube 42 and the first communication member 51 are both disposed as a circular tube and/or a flat tube, for example, the second heat exchange tube 42 and the first communication member 51 may be arranged in a row. Between the lower header 20 and the intermediate header 30, as shown in FIG. This can simplify the manufacturing process and manufacturing difficulty of the first heat exchanger and/or the second heat exchanger, and can reduce the first heat exchanger and/or Or the thickness of the second heat exchanger, increasing the aesthetics of the heat exchanger and the like.

As shown in FIG. 1, in the first heat exchanger, a plurality of first heat exchange tubes 41 are disposed on the left side of the first heat exchanger, and a second communication member 52 is disposed on the right side of the first heat exchanger. Further, in the second heat exchanger, a plurality of second heat exchange tubes 42 are disposed on the right side of the second heat exchanger, and the first communication member 51 is disposed on the left side of the second heat exchanger. It can be understood that a person skilled in the art can set the relative positions of the first heat exchange tube 41 and the second communication member 52 as needed, without being limited to be as shown, for example, the first heat exchange tube 41 can be disposed to be located. In the middle, the second communication member 52 is located on both sides thereof. This also applies to the second heat exchange tube 42 and the first communication member 51, which will not be described in detail herein.

The intermediate header 30 is divided into a first cavity 31 and a second cavity 32 which are independent of each other by providing a main partition 61. It will be appreciated that the shape of the main partition 61 may be provided in any suitable form as long as it is ensured that the first cavity 31 and the second cavity 32 are separated, and is not limited to the form described in FIG. For example, the main partition 61 may be disposed to extend obliquely, vertically, curvedly or meandering from the upper portion of the intermediate header 30 to the lower portion of the intermediate header 30.

In addition, it should be noted that FIG. 1 shows only one refrigerant cycle. Of course, it is also possible to arrange the first heat exchanger system to have a plurality of refrigerant cycles, that is, in the case of increasing the longitudinal lengths of the upper header 10, the intermediate header 30 and the lower header 20, in FIG. The two sides of the structural arrangement shown need to be provided with repeating structural units to achieve the above objectives.

By providing the bent type main partition 61 as shown in FIG. 1, it is divided into two cavities, that is, the first cavity 31 and the second cavity 32, along the longitudinal direction of the intermediate header 30.

In the case where the first heat exchanger is a condenser and the second heat exchanger is an evaporator, the working principle of the first heat exchanger system of the present invention during cooling is illustrated by taking a flat tube as a heat exchange tube as an example. Specifically, after the refrigerant gas in the condenser is exothermic, it becomes a liquid refrigerant, which flows down from the heat release flat tube (the first heat exchange tube 41) due to the influence of gravity; and flows into the evaporator after flowing into the evaporator. The heat is absorbed and becomes a gas refrigerant, which flows from the heat absorption flat tube (second heat exchange tube 42) and finally flows into the condenser; in this way, the refrigeration is achieved.

It should be noted here that the second to seventh heat exchanger systems according to the first embodiment of the present invention shown in FIGS. 2-7 are all modifications of the first heat exchanger system. Therefore, the structural arrangements or descriptions made with respect to the first heat exchanger system are applicable to them, so their similarities will not be described in detail herein, but only their differences from the first heat exchanger system will be emphasized.

Referring to Figure 2, a schematic block diagram of a second heat exchanger system 120 in accordance with a first embodiment of the present invention is shown. As can be seen by comparing FIGS. 1 and 2, the second heat exchanger system 120 is different from the first heat exchanger system 110 in that the chambers in the intermediate header 30 are separated in a different manner, and the remaining portions are replaced with the first one. Heater system 110 the same.

Specifically, the main partition 621 extending from the left end of the intermediate header 30 in the longitudinal direction of the intermediate header 30 to the right end of the intermediate header 30 and the main partition 621 and the intermediate header are provided. At least one sub-baffle 622, 623 between the upper wall and/or the lower wall divides the cavity of the intermediate header 30 into the first cavity 31, the second cavity 32 and the two flow chambers 33. And 34.

Here, it should be noted that the auxiliary baffles 622, 623 may be arranged to extend obliquely, vertically, curvedly or meandering from the upper or lower portion of the intermediate header to the main partition 621, as long as The first cavity and the second cavity are separated. The invention is not limited thereto.

In the present example, the first cavity 31 and the second cavity 32 are in communication with the

corresponding communication cavities

33, 34, respectively, through the first opening 71 and the second opening 72, which are correspondingly disposed on the main partition 621.

During the circulation of the refrigerant of the second heat exchanger system 120, the refrigerant in the upper header 10 flows downward from the first heat exchange tube 41 into the first chamber 31, after which An opening 71 flows into the circulation chamber 33. The refrigerant in the circulation chamber 33 flows into the cavity of the lower header 30 via the first communication member 51, after which the refrigerant flows upward from the second heat exchange tube 42 into the second chamber 32, which The refrigerant in the second chamber 32 flows into the other circulation chamber 34 through the second opening 72, and is further returned to the upper header 10 via the second communication member 52.

Referring to Figure 3, a schematic block diagram of a third heat exchanger system 130 in accordance with a first embodiment of the present invention is shown. As can be seen by comparing Figures 2 and 3, the third heat exchanger system 130 differs from the second heat exchanger system 120 in the manner in which the cavities in the intermediate header 30 are separated and the first and second communicating members. The arrangement is different, and the rest is the same as the second heat exchanger system 120.

In the present example, the first communication member 51 and the second communication member 52 are provided in the form of a plurality of flat tubes, and the lower portion of FIG. 3 is a flat tube on the main partition 60 for accommodating the flat tubes. Top view of the hole.

The intermediate header 30 is partitioned into upper and lower chambers by the main partition 60 extending in the longitudinal direction thereof, that is, the first chamber 31 and the second chamber 32; and the first and second passages are communicated on the main partition 60. The first opening 71 and the second opening 72 (in this example, in particular a plurality of flat tube holes) are provided at positions corresponding to the plurality of flat tubes of the

members

51 and 52. One end of each of the flat tubes of the first and

second communication members

51, 52 is inserted through each of the corresponding flat tube holes 71, 72 into the first chamber 31 or the second chamber 32 to form a cooling chamber. The circuit of the agent. It will be appreciated that the number of flat tubes used as the first and

second communication members

51, 52 can be set as desired, and is not limited to the illustrated number. Preferably, in order to reduce the pressure drop, the flat tube for communication is usually provided as a flat tube of a larger or more internal flow passage, which may require a larger (wider, higher) flat tube, so The connector to be fitted with the flat tube needs to vary depending on the size of the flat tube selected. Therefore, the first opening 71 and/or the second opening can be The port 72, that is, the flat tube hole for connecting the flat tubes for communication, is set to be larger or larger in width or height direction.

During the circulation of the refrigerant of the third heat exchanger system 130, the refrigerant in the upper header 10 flows downward from the first heat exchange tube 41 into the first chamber 31, after which The flat tube in one of the communication members 51 flows into the cavity of the lower header 30, after which the refrigerant flows upward from the second heat exchange tube 42 into the second chamber 32, and further via the second communication member. The flat tube of 52 is returned to flow into the upper header 10.

Referring to Figure 4, there is shown a block diagram of a fourth heat exchanger system 140 in accordance with a first embodiment of the present invention. As can be seen by comparing FIG. 3 and FIG. 4, the fourth heat exchanger system 140 differs from the third heat exchanger system 130 only in that the first communication member 51 and the second communication member 52 are selected to have an equivalent diameter circle. The tube replaces the flat tube. In doing so, the heat exchange area of the single row heat exchanger can be increased as much as possible within a limited installation space. Thus, at least one first opening 71 and second opening 72 for accommodating the circular tube, in particular the circular tube holes 71, 72, are formed in the main partition 60.

Since the structural arrangement and working principle of the fourth heat exchanger system 140 and the third heat exchanger 130 are the same, they will not be described in detail herein.

Referring to Figure 5, a schematic block diagram of a fifth heat exchanger system 150 in accordance with a first embodiment of the present invention is shown. As can be seen by comparing FIG. 1 and FIG. 5, the fifth heat exchanger system 150 is different from the first heat exchanger 110 in that the first communication member 51 and the second communication member 52 are disposed in the corresponding headers. The nozzle outside the cavity is divided into upper and lower cavities, that is, the first cavity 31 and the second cavity 32, by the main partition 60 disposed along the longitudinal direction of the intermediate header 30.

Specifically, the first communication member 51 and the second communication member 52 are respectively provided with a first nozzle and a second nozzle of an equivalent diameter, and no processing is performed on the main partition, for example, an opening is formed, a sub-baffle is provided, and the like. The two ends of the first nozzle 51 are respectively inserted into the cavities of the first cavity 31 and the lower header 20 through the corresponding openings, and the two ends of the second nozzle 52 are respectively inserted into the second cavity through the corresponding openings. The body 32 and the cavity of the upper header 10 are in the cavity.

During the circulation of the refrigerant of the fifth heat exchanger system, the refrigerant in the upper header 10 flows downward from the first heat exchange tube 41 into the first chamber 31, and then passes through the first The nozzle 51 flows into the cavity of the lower header 30, after which the refrigerant flows upward from the second heat exchange tube 42 into the second chamber 32, and then flows back to the upper header via the second nozzle 52. In tube 10.

Referring to Figure 6, a schematic structural view of a sixth heat exchanger system 160 in accordance with a first embodiment of the present invention is shown. By comparing FIG. 6 and FIG. 5, the sixth heat exchanger system 160 is different from the fifth heat exchanger system 150 only in that a fluid from the first nozzle 51 is disposed in the cavity of the lower header 20. Liquid separation structure 80. The liquid-distributing structure 80 may be a flow guiding tube connected or integrally formed with the first connecting tube 51, and the guiding tube is provided with a gap-distributed opening.

For a heat exchanger having a long header, a liquid-distributing structure is added to the header of the side serving as the evaporator, and the heat exchange area can be effectively utilized.

Referring to Figure 7, a schematic block diagram of a seventh heat exchanger system 170 in accordance with a first embodiment of the present invention is shown. As can be seen by comparing Figures 2 and 7, the seventh heat exchanger system 170 differs from the second heat exchanger system 120 in that a greater number of secondary baffles are provided. By providing more sub baffles, the relative positions of the first heat exchange tubes and the second heat exchange tubes in the first heat exchanger and the second heat exchanger can be adjusted such that they are not necessarily completely rigid left and right arrangements ( As shown in Figure 1-6). In this way, according to the distribution of the wind field on the surface of the heat exchanger, the first and second heat exchange tubes which mainly serve as heat exchange are arranged at the place where the wind speed is the highest, and the heat exchange amount is increased.

Specifically, the main partition 621 extending from the left end of the intermediate header 30 in the longitudinal direction of the intermediate header 30 to the right end of the intermediate header 30 and the main partition 621 and the intermediate header are provided. Two sub-baffles 622 between the upper walls, two sub-baffles 623 between the main partition 621 and the lower wall of the intermediate header divide the cavity of the intermediate header 30 into two first chambers Body 31, a second cavity 32 and three

flow chambers

33 and 34.

corresponding communication cavities

During the circulation of the refrigerant of the seventh heat exchanger system, the refrigerant in the upper header 10 flows downward from the first heat exchange tubes 41 located on the left and right sides to the corresponding first chambers, respectively. 31, then flows into the corresponding flow chamber 33 through the first opening 71. The refrigerant in the circulation chamber 33 flows into the chamber of the lower header 30 via the two first communication members 51, respectively, and thereafter the refrigerant flows upward from the second heat exchange tube 42 to the second chamber 32. The refrigerant in the second cavity 32 flows into the circulation chamber 34 through the second opening 72, and is returned to the upper header 10 via the second communication member 52.

That is, a plurality of refrigerant circulation circuits can be formed between the first and second heat exchangers as needed by providing a sub-baffle, providing an opening on the main partition, and the like. Although in the first to seventh heat exchanger systems illustrated in FIGS. 1-7, most of the heat exchanger systems are only illustrated as having one refrigerant cycle, those skilled in the art can repeat such structures as needed. The purpose of having multiple refrigerant circuits is achieved by arranging or altering the structural arrangement within the heat exchanger in an alternative manner. Such substitutions or modifications are intended to fall within the scope of the invention.

Referring to Figure 8, a heat exchanger system 200 in accordance with a second embodiment of the present invention is illustrated. The heat exchanger system 200 includes an upper header 210, a first intermediate header 230, a second intermediate header 240, and a lower header 220 arranged in order from top to bottom, and the upper header 210 and the first A first heat exchange tube 241 is disposed between the intermediate headers 230 and a second heat exchange tube 242 is disposed between the second intermediate headers 240 and the lower headers 220.

The first intermediate header 230 is provided with a first partition 261 that partitions the first intermediate header 230 into at least one first cavity 231 and at least one first communication cavity 234 that are independent of each other. The second intermediate header 240 is provided with a second partition 262 that partitions the second intermediate header 240 into at least one second cavity 232 and at least one second communication cavity 233 that are independent of each other.

During the refrigerant cycle, the refrigerant in the upper header 210 flows downward from the first heat exchange tube 241 into the first chamber 231, and enters the second communication chamber 233 via the first connecting tube 281. And flowing into the cavity of the lower header 220 through the first communication member 251, after which the refrigerant flows upward from the second heat exchange tube 242 into the second cavity 232, and enters the second via the second connection pipe 282. A communication chamber 234 is further returned to the upper header 210 via the second communication member 252.

As shown in FIG. 8, the first intermediate header 230 is partitioned into a first cavity 231 and a first communication cavity 234 by a first partition 261; the second intermediate header 262 is disposed through the second separator 262. It is divided into a second cavity 232 and a second communication cavity 233. It will be apparent to those skilled in the art that a plurality of

partitions

261, 262 may be provided in the first and second

intermediate headers

230, 240, respectively, as needed to form a plurality of refrigerant circuits. How to arrange a plurality of refrigerant circuits is no longer shown and described in detail herein, and those skilled in the art can set them as needed.

In addition, an opening may be provided at a suitable position on the first and second

intermediate headers

230, 240 to connect the first connecting tube 281 and the second connecting tube 282 as needed, without being limited to the one shown in FIG. Two openings are provided in the lower portion of the first intermediate header 230 and two corresponding openings are provided in the upper portion of the second intermediate header 240.

Here, it should be noted that the first communication member 251 and the second communication member 252 may be communication pipes or nozzles that function as communication. Preferably, as shown in FIG. 8, the first communication member 251 is at least one round tube or flat tube disposed between the lower header 220 and the second intermediate header 230, and the tube or the flat tube The tube and the second heat exchange tubes 242 are arranged in a row between the lower header 220 and the second intermediate header 240. The second communication member 252 is at least one circular tube or flat tube disposed between the upper header 210 and the first intermediate header 230, and the circular tube or the flat tube is aligned with the first heat exchange tube 241 The rows are disposed between the upper header 210 and the first headers 230.

The upper header 210 and the first intermediate header 230 and the first heat exchange tube 241 therebetween constitute a first heat exchanger, the second intermediate header 240 and the lower header 220, and Second heat exchange between Tube 242 constitutes a second heat exchanger. In the present invention, for the purpose of explanation, the first heat exchanger is referred to as a condenser and the second heat exchanger is referred to as an evaporator. Of course, those skilled in the art can set the first and second heat exchangers as condensers, evaporators or other types of heat exchangers as needed, and the present invention does not impose any limitation thereon.

The first heat exchange tubes 241 and the second heat exchange tubes 242 may be any type of heat exchange tubes. Generally, the first heat exchange tube 241 and the second heat exchange tube 242 are selected to be any one of a round tube and a flat tube. In the same heat exchanger system, the first heat exchange tube 241 and the second heat exchange tube 242 do not have to be disposed in the same type of heat exchange tubes, for example, they are not necessarily all round tubes or flat tubes, and one of them may be a circle. The tube, and the other is a flat tube, it is also possible that some of the first and second

heat exchange tubes

241, 242 are round tubes, and the other portion is a flat tube. That is, the first and second

heat exchange tubes

241, 242 described herein may be provided as any type of feasible heat exchange tubes as needed, and the present invention does not impose any particular limitation thereto.

In addition, the adjacent two first heat exchange tubes 241 or the adjacent two second heat exchange tubes 242 may be provided with fins regardless of the type of the heat exchange tubes.

It can be understood that if the first heat exchange tube 241 and the second communication member 252 are both disposed, for example, as round tubes and/or flat tubes, the first heat exchange tubes 241 and the second communication members 252 may be arranged in a row. Between the upper header 210 and the first intermediate header 230, as shown in FIG. Similarly, if the second heat exchange tube 242 and the first communication member 251 are both disposed as a circular tube and/or a flat tube, for example, the second heat exchange tube 242 and the first communication member 251 may be arranged in a row. Between the lower header 220 and the second intermediate header 240 is as shown in FIG. This can simplify the manufacturing process and manufacturing difficulty of the first heat exchanger and/or the second heat exchanger, and can reduce the thickness of the first heat exchanger and/or the second heat exchanger.

As shown in FIG. 8, in the first heat exchanger, a plurality of first heat exchange tubes 241 are disposed on the left side of the first heat exchanger, and a second communication member 252 is disposed on the right side of the first heat exchanger. Further, in the second heat exchanger, a plurality of second heat exchange tubes 242 are disposed on the right side of the second heat exchanger, and the first communication member 251 is disposed on the left side of the second heat exchanger. It can be understood that a person skilled in the art can set the relative positions of the first heat exchange tube 241 and the second communication member 252 as needed, without being limited to be as shown, for example, the first heat exchange tube 241 can be disposed to be located. In the middle, the second communication member 252 is located on both sides thereof. This also applies to the second heat exchange tube 242 and the first communication member 251, which will not be described in detail herein.

The first and second

intermediate headers

230, 240 are divided into first chambers 231, second chambers 232, and

corresponding communication chambers

233, 234 that are independent of each other by providing a first partition 261 and a second partition 262. . It will be appreciated that the shapes of the first and

second partitions

261, 262 may be provided in any suitable form as long as it is ensured that the first cavity 231 and the second cavity 232 are separated, and is not limited to the form illustrated in FIG. For example, the first and

second partitions

261, 262 may be disposed obliquely and vertically from the upper wall of the first intermediate header 230 or the second intermediate header 240. Extending to the lower wall of the ground, curved or meandering.

In addition, it should be noted that FIG. 8 shows only one refrigerant cycle. Of course, it is also possible to arrange the heat exchanger system to have a plurality of refrigerant cycles, that is, to increase the upper header 210, the first intermediate header 230, the second intermediate header 240, and the lower header 220. In the case of the longitudinal length, repeated structural units are provided as needed on both sides of the structural arrangement shown in Fig. 8 to achieve the above object.

In the case where the first heat exchanger is a condenser and the second heat exchanger is an evaporator, the flat tube is taken as a heat exchange tube as an example of the heat exchanger system shown in FIG. 8 of the present invention. principle. Specifically, after the refrigerant gas in the condenser is exothermic, it becomes a liquid refrigerant, which flows down from the heat release flat tube (the first heat exchange tube 241) due to the influence of gravity; and flows into the evaporator after flowing into the evaporator. The heat is absorbed and becomes a gas refrigerant, which flows from the heat absorbing flat tube (second heat exchange tube 242) and finally flows into the condenser; in this way, the cooling effect is achieved.

Referring to Figure 9, a heat exchanger system 300 in accordance with a third embodiment of the present invention is illustrated. The heat exchanger 300 includes an upper header 310, an intermediate header 330, and a lower header 320. A first heat exchange tube 341 is disposed between the upper header 310 and the intermediate header 330, and a second heat exchange tube 342 is disposed between the intermediate header 330 and the lower header 320.

The upper header 310 and the intermediate header 330 and the first heat exchange tube 341 therebetween constitute a first heat exchanger, preferably a condenser, the intermediate header 330 and the lower header 320 And the second heat exchange tube 342 between them constitutes a second heat exchanger, preferably an evaporator.

The heat exchanger system 300 according to the third embodiment of the present invention may have a similar structure to the first to seventh heat exchanger systems according to the first embodiment of the present invention, but differs in that: A portion of the first heat exchanger or the second heat exchanger is bent so as to be able to be installed in a more compact space. In other words, in the heat exchanger system according to the third embodiment of the present invention, the upper header 310, the intermediate header 330, and the lower header 320 are not disposed in order from top to bottom (or they are substantially in the same vertical direction) In a straight plane), but at a certain angle to each other. The specific angles between each other can be set as needed. For example, as shown in FIG. 9, the upper header 310 may be disposed at an angle of 45 with the intermediate header 330, and the intermediate header 330 and the lower header 320 are disposed substantially in the same horizontal plane.

Specifically, the first heat exchange tube 341 or the second heat exchange tube 342 of the first heat exchanger or the second heat exchanger may be bent to achieve the purpose of bending the heat exchanger.

In addition, the first heat exchange tubes 341 and the second heat exchange tubes 342 may also be inserted obliquely into the intermediate header 330 relative to each other (for example, the mounting holes on the intermediate header 330 are disposed not directly aligned with each other, Instead of achieving a certain angle between each other, the purpose of the bending heat exchanger is achieved.

Of course, the above concept of making the first heat exchanger and the second heat exchanger inclined are also applicable to the heat exchanger system according to the second embodiment of the present invention. For example, the first heat exchange tube 241 or the second heat exchange tube 242 in the first heat exchanger or the second heat exchanger may be bent to achieve the purpose of bending the heat exchanger.

In addition, the first heat exchange tube 241 and the second heat exchange tube 242 may also be inserted obliquely into the respective first and second intermediate headers (for example, in the first intermediate header and the second intermediate set) The mounting holes on the flow tubes are arranged not directly aligned with each other, but at an angle to each other, so that the first heat exchanger and the second heat exchanger can be arranged obliquely relative to each other.

In the third embodiment, by bending or arranging the first heat exchanger and/or the second heat exchanger obliquely to each other, it is possible to make the fan and the air duct more convenient for some systems having installation space requirements. Installation layout.

It should be noted that in the various heat exchanger systems shown in the first to third embodiments of the present invention, the single row heat exchanger is used to explain, for example, how to set the evaporator and the condenser, but this A person skilled in the art can arrange the evaporator and/or the condenser into a plurality of rows of heat exchangers, which is not limited in the present invention. In addition, although in the various heat exchanger systems shown in the first to third embodiments of the present invention, the heat exchanger system may include only a condenser and an evaporator that communicate with each other to realize refrigerant circulation. Purpose, but in order to increase the circulation efficiency of the refrigerant, it is also possible to add a compressor to the circulation path of the refrigerant.

In addition, it can be understood that in the first to third embodiments of the present invention, the first communication member and the second communication member may be the same or different, and the communication manner of the first communication member with the first cavity and the second communication member The manner of communication with the second cavity may be the same or different. Alternatively, those skilled in the art can select or appropriately combine the first communication member, the second communication member, and the first communication member in communication with the first cavity according to the manner shown in FIGS. 1-8 of the present invention. And a manner of communicating the second communication member with the second cavity.

As apparent from the above, the heat exchanger system of the first to third embodiments of the present invention has at least one of the following advantages:

1. High processing feasibility;

2. Low cost;

3. The risk of system security failure is small;

4. The required installation space is small;

5. For the evaporator with a long collector, it can be more liquid-distributed and effectively use the heat exchange area;

6. The heat exchange tubes can be flexibly arranged according to the distribution of the wind field to increase the heat exchange amount;

7. Bending the evaporator and/or condenser; or arranging the evaporator and condenser obliquely to make it easier to arrange the fan and air duct to suit different installation requirements.

The above are only some embodiments of the present invention, and those of ordinary skill in the art will understand that without departing from the present embodiment. Variations of the embodiments may be made by the spirit and scope of the invention, and the scope of the invention is defined by the claims and their equivalents.

Claims

A heat exchanger system comprising an upper header, an intermediate header and a lower header arranged in order from top to bottom, and a first set between the upper header and the intermediate header a heat exchange tube and a second heat exchange tube disposed between the intermediate header and the lower header

The method is characterized in that the intermediate header has a first cavity and a second cavity which are independent of each other,

During the circulation of the refrigerant, the refrigerant in the upper header flows downward from the first heat exchange tube into the first chamber, and flows into the chamber of the lower header via the first communication member. The refrigerant then flows upward from the second heat exchange tube into the second chamber, and then flows back into the upper header via the second communication member.
The heat exchanger system of claim 1 wherein

The first communication member is a communication tube or a socket for communicating.
A heat exchanger system according to claim 1 or 2, wherein

The second communication member is a communication tube or a socket for communicating.
A heat exchanger system according to any one of claims 1 to 3, wherein

The first communication component is at least one circular tube or flat tube disposed between the lower header and the intermediate header, and the circular tube or the flat tube and the second heat exchange tube are arranged in a row and arranged in a lower set Between the flow tube and the intermediate header; and/or

The second communication component is at least one circular tube or flat tube disposed between the upper header and the intermediate header, and the circular tube or the flat tube and the first heat exchange tube are arranged in a row and arranged in the upper set Between the flow tube and the intermediate header.
A heat exchanger system according to any one of claims 1 to 4, characterized in that

The upper header and the intermediate header and the first heat exchange tube therebetween constitute a first heat exchanger, preferably a condenser, the intermediate header and a lower header, and a The two heat exchange tubes constitute a second heat exchanger, preferably an evaporator.
The heat exchanger system according to claim 5, wherein

The intermediate header is partitioned into the first cavity and the main partition by a main partition extending obliquely, vertically, curvedly or meandering from an upper portion of the intermediate header to a lower portion of the intermediate header Second cavity.
The heat exchanger system according to claim 5, wherein

The intermediate header is divided into the first cavity and the second by a main partition extending from one end of the intermediate header in a longitudinal direction of the intermediate header to a other end of the intermediate header Cavity.
The heat exchanger system of claim 7 wherein:

a first opening and a second opening are disposed on the main partition, and refrigerant from the first heat exchanger enters the second heat exchanger from the first cavity through the first opening, and The refrigerant flowing out of the second heat exchanger flows into the second cavity and enters the first heat exchanger via the second opening.
The heat exchanger system according to claim 8 wherein:

A flat tube or a tube for communication between the intermediate header and the lower header in the second heat exchanger serves as a first communication member for communication in the second heat exchanger One end of the flat tube or the circular tube is inserted through the first opening into the first cavity, and the other end is connected to the cavity of the lower collecting tube; and/or

A flat tube or a tube for communication between the intermediate header and the upper header in the first heat exchanger serves as a second communication member for communication in the first heat exchanger One end of the flat tube or the circular tube is inserted through the second opening into the second cavity, and the other end is connected to the cavity of the upper header.
The heat exchanger system of claim 7 wherein:

The first communication component is a first connector that communicates with the cavity of the lower header and the first cavity of the intermediate header, and/or the second communication component is a cavity that communicates with the upper header and the intermediate header The second nozzle of the second cavity.
The heat exchanger system according to claim 10, wherein

A liquid dispensing structure for dispensing fluid from the first nozzle is disposed in the cavity of the lower header.
The heat exchanger system according to claim 11 wherein:

The liquid-distributing structure is a draft tube connected or integrally formed with the first connecting tube, and the guiding tube is provided with a space A distribution opening.
The heat exchanger system according to claim 8 wherein:

The intermediate header further includes a device for separating a cavity of the intermediate header into at least one communication cavity for communication, at least one of the first cavity, and at least one of the second cavity At least one sub-baffle between the main partition and the upper and/or lower wall of the intermediate header.
The heat exchanger system according to claim 13 wherein:

The first cavity and the second cavity communicate with the at least one communication cavity through a first opening and a second opening on the main partition, respectively, the at least one communication cavity and a corresponding first communication component or The two connected components are connected.
A heat exchanger system according to any one of claims 5 to 14, wherein

The first heat exchanger and/or the second heat exchanger are bent, preferably bending the first heat exchange tube and/or the second heat exchange in the first heat exchanger and/or the second heat exchanger Tube; or

The first heat exchange tubes and the second heat exchange tubes are inserted obliquely into each other into the intermediate header.
A heat exchanger system comprising an upper header, a first intermediate header, a second intermediate header and a lower header, which are arranged in order from top to bottom, and an upper header and a first heat exchange tube is disposed between the first intermediate headers and a second heat exchange tube is disposed between the second intermediate headers and the lower headers.

The first intermediate header is provided with a first partition that divides the first intermediate header into at least one first cavity and at least one first communication cavity independent of each other, the second intermediate current The tube is provided with a second partition separating the second intermediate header into at least one second cavity and at least one second communication cavity independent of each other;

During the refrigerant cycle, the refrigerant in the upper header flows downward from the first heat exchange tube into the first chamber, enters the second communication chamber via the first connecting tube, and passes through the first communication The component flows into the cavity of the lower header, after which the refrigerant flows upward from the second heat exchange tube into the second cavity, enters the first communication cavity via the second connecting pipe, and further passes through the second communication The component returns into the upper header.
The heat exchanger system according to claim 16 wherein:

The first communication member is a communication tube or a socket for communicating.
A heat exchanger system according to claim 16 or 17, wherein

The second communication member is a communication tube or a socket for communicating.
A heat exchanger system according to any one of claims 16-18, wherein

The first communication member is at least one circular tube or flat tube disposed between the lower header and the second intermediate header, and the circular tube or the flat tube and the second heat exchange tube are arranged in a row in a row Between the lower header and the second intermediate header; and/or

The second communication component is at least one circular tube or flat tube disposed between the upper header and the first intermediate header, and the circular tube or the flat tube is arranged in a row with the first heat exchange tube Between the upper header and the first intermediate header.
A heat exchanger system according to any one of claims 16 to 19, wherein

The upper header and the first intermediate header and the first heat exchange tube therebetween constitute a first heat exchanger, preferably a condenser, the second intermediate header and a lower header, and The second heat exchange tube between them constitutes a second heat exchanger, preferably an evaporator.
The heat exchanger system according to claim 20, wherein

The first heat exchanger and/or the second heat exchanger are bent, preferably bending the first heat exchange tube and/or the second heat exchange in the first heat exchanger and/or the second heat exchanger Tube; or

The first heat exchange tubes and the second heat exchange tubes are inserted obliquely with respect to each other into the corresponding first intermediate header and second intermediate header.