COMBINED HEAT EXCHANGER

A combined heat exchanger is provided. The combined heat exchanger includes at least two heat exchanger cores, a first communicating member and a second communicating member. Each of the at least two heat exchanger cores includes at least a first collecting pipe, a second collecting pipe and multiple flat pipes. The flat pipes are vertically disposed between the first collecting pipe and the second collecting pipe. Both ends of the first communicating member are in communication with the first collecting pipes of two adjacent heat exchanger cores, respectively; both ends of the second communicating member are in communication with the second collecting pipes of the two adjacent heat exchanger cores, respectively; and the two adjacent heat exchanger cores are disposed on different planes.

TECHNICAL FIELD

The present disclosure relates to the field of refrigerating system, in particular to a combined heat exchanger.

BACKGROUND

Main components of the air conditioning system include a compressor, a condenser, a throttling device and a heat exchanger. The heat exchanger plays the role of heat exchange with the outside environment. Conventionally, collecting pipes of the heat exchanger are connected with vertical flat pipes, and an approximately square-shaped heat exchanger structure is formed by bending the collecting pipes.

However, sometimes improper bending of the collecting pipe may lead to deformation of the flat pipe, thereby reducing the heat transfer performance of the heat exchanger. In addition, a bending process of the collecting pipe has many requirements, and a material of the bending section has plastic deformation, which can easily cause surface damage, leading to material corrosion and resulting in leakage.

SUMMARY

A combined heat exchanger, which has a good heat transfer performance, a simple structure and is convenient to assemble and disassemble can solve the technical problem above.

In order to solve the technical problems above, a technical solution is provided herein in the present disclosure.

A combined heat exchanger includes at least two heat exchanger cores, a first communicating member and a second communicating member. Each of the at least two heat exchanger cores includes at least a first collecting pipe, a second collecting pipe and a plurality of flat pipes. The plurality of flat pipes are vertically disposed between the first collecting pipe and the second collecting pipe. Both ends of the first communicating member are in communication with the first collecting pipes of two adjacent heat exchanger cores, respectively; both ends of the second communicating member are in communication with the second collecting pipes of the two adjacent heat exchanger cores, respectively; and the two adjacent heat exchanger cores are disposed on different planes.

In the present disclosure, since the first communicating member are in communication with the two adjacent first collecting pipes and the second communicating member are in communication with the two adjacent second collecting pipes, two adjacent heat exchanger cores are in communication to form a combined heat exchanger without bending the first collecting pipe or the second collecting pipe. Conditions such as deformation and surface loss caused by improper bending of the first collecting pipe or the second collecting pipe can be avoided, so that the combined heat exchanger can have improved heat transfer performance and be convenient to assemble or disassemble.

In some embodiments, the first communicating member includes two first linear pipes and a first bending pipe disposed between the two first linear pipes, and one end of the first linear pipe is in communication with the first collecting pipe and connected to the first collecting pipe by welding.

In this way, by assembling and disassembling of the first communicating member, it is convenient for free assembling and disposing the heat exchanger cores, and problems of leakage caused by improper bending of the first collecting pipe will not be caused.

In some embodiments, both ends of the first bending pipe are provided with flared sections, respectively. The two first linear pipes extend into the corresponding flared section, respectively, and are in communication with the first bending pipe.

In this way, the first linear pipes can extend into fixed positions in the first bending pipe, so as to facilitate communication and connection between the first linear pipe and the first bending pipe.

In some embodiments, the second communicating member includes two second linear pipes and a second bending pipe disposed between the two second linear pipes, and one end of the second linear pipe is in communication with the second collecting pipe and connected to the second collecting pipe by welding.

In this way, by assembling and disassembling of the second communicating member, it is convenient for free assembling and disposing the heat exchanger cores, and problems of leakage caused by improper bending of the second collecting pipe will not be caused.

In some embodiments, a diameter of the second bending pipe is greater than a diameter of the first bending pipe.

Therefore, on condition that the combined heat exchanger core is used as an evaporator, when a gas-liquid two-phase fluid media flows into the first bending pipe, a volume of the fluid media may increase after transferring into a gas phase, so that the fluid media may enter into the second bending pipe. At this time, since the diameter of the second bending pipe is greater than the diameter of the first bending pipe, the second bending pipe may have enough space for the gas phase fluid media to enter.

In some embodiments, the combined heat exchanger further includes a liquid separator. The liquid separator is located in the first collecting pipe. Both ends of the first communicating member are in communication with the liquid separators of two adjacent first collecting pipes, respectively.

In this way, since the liquid separator is located in the first collecting pipe, and in communication with the first communicating member, it is convenient for disassembling and replacing of the liquid separator.

In some embodiments, the combined heat exchanger further includes a connecting member. The connecting member is fixed to sideboards of the two adjacent heat exchanger cores, and the connecting member is made of metal.

In this way, the connecting member can be configured for improving fixing connection and shielding.

In some embodiments, combined heat exchanger further includes an inlet pipe and an outlet pipe. The inlet pipe is in communication with the first collecting pipe, and the outlet pipe is in communication with the second collecting pipe.

In this way, the inlet pipe and the outlet pipe can facilitate communication of the fluid media. When the combined heat exchanger is used as the evaporator, the gas-fluid two-phase fluid medium enters into the first collecting pipe via the inlet pipe, transfers into gas phase by evaporating, and flows into the outlet pipe via the second collecting pipe.

In some embodiments, the inlet pipe and the outlet pipe are disposed on a same heat exchanger core of the at least two heat exchanger cores. In some embodiments, the inlet pipe and the outlet pipe are disposed on different heat exchanger cores of the at least two heat exchanger cores.

In this way, the fluid media can flow into the heat exchanger core via the inlet pipe for heat exchange, and a transformed fluid medium can flow towards the outlet pipe.

The present disclosure further provides an air conditioning system, which includes the combined heat exchanger disclosed above.

Compared with conventional art, in the present disclosure, since the first communicating member are in communication with the two adjacent first collecting pipes and the second communicating member are in communication with the two adjacent second collecting pipes, two adjacent heat exchanger cores are in communication to form a combined heat exchanger without bending the first collecting pipe or the second collecting pipe. Conditions such as deformation and surface loss caused by improper bending of the first collecting pipe or the second collecting pipe can be avoided, so that the combined heat exchanger can have improved heat transfer performance and be convenient to assemble or disassemble.

In the figures,100represents a combined heat exchanger;10represents a heat exchanger core;11represents a first collecting pipe;12represents a second collecting pipe;13represents a flat pipe;14represents a sideboard;20represents a first communicating member;21represents a first bending pipe;22represents a first linear pipe;23represents a flared section;30represents a second communicating member;31represents a second bending pipe;32represents a second linear pipe;40represents a connecting member;50represents an inlet pipe; and60represents an outlet pipe.

DETAILED DESCRIPTION

The embodiments of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by the skilled in the art without making creative labor fall within the scope of protection of the present disclosure.

It is important to note that when a component is said to be “disposed” on another component, it may be disposed directly on another component or there may be a centered component. When a component is considered to be “mounted” on another component, it may be mounted directly on the other component or there may be both centered components. When a component is considered to be “fixed” to another component, it may be fixed directly to the other component or there may be a centered component as well.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art belonging to the present disclosure. The terms used herein in the specification of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The term “or/and” as used herein includes any and all combinations of one or more of the related listed items.

Referring toFIG.1, the present disclosure provides a combined heat exchanger100. The combined heat exchanger100can be used in an air conditioning system, and configured for heat exchange with the outside. In the present embodiment, the heat exchanger core10is a microchannel heat exchanger core10. In some embodiments, the heat exchanger core10can be a fin-type heat exchanger core10or other heat chanter cores10.

FIG.1is a structural schematic diagram of a combined heat exchanger100in an embodiment of the present disclosure. The combined heat exchanger100includes at least two heat exchanger cores10, a first communicating member20and a second communicating member30. Each of the at least two heat exchanger cores10includes at least a first collecting pipe11, and a second collecting pipe12. Both ends of the first communicating member20are in communication with the first collecting pipes11of two adjacent heat exchanger cores10, respectively. A fluid media can enter the combined heat exchanger100from the first collecting pipe11, and flow between the two adjacent heat exchanger cores10through the first communicating member20. Both ends of the second communicating member30are in communication with the second collecting pipes12of the two adjacent heat exchanger cores10, respectively. The fluid media can flow between the two adjacent second collecting pipes12through the second communicating member30.

It could be understood that since the first communicating member20are in communication with the two adjacent first collecting pipes11and the second communicating member30are in communication with the two adjacent second collecting pipes12, two adjacent heat exchanger cores10are in communication to form a combined heat exchanger100without bending the first collecting pipe11or the second collecting pipe12. Conditions such as deformation and surface loss caused by improper bending of the first collecting pipe11or the second collecting pipe12can be avoided, so that the combined heat exchanger100can have improved heat transfer performance and be convenient to assemble or disassemble.

Specifically, a diameter of the first collecting pipe11can be smaller than a diameter of the second collecting pipe12. When a gas-liquid two-phase fluid media flows into the first collecting pipe11, a volume of the fluid media may increase after transferring into a gas phase, so that the fluid media may enter into the second collecting pipe12. At this time, since the diameter of the second collecting pipe12is greater than the diameter of the first collecting pipe11, the second collecting pipe12may have enough space for the gas phase fluid media to enter.

Furthermore, referring toFIG.2, the first communicating member20can include two first linear pipes22and a first bending pipe21disposed between the two first linear pipes22, and one end of the first linear pipe22can be in communication with the first collecting pipe11and connected to the first collecting pipe11by welding. By assembling and disassembling of the first communicating member20, it can be convenient for free assembling and disposing the heat exchanger cores10, and problems of leakage caused by improper bending of the first collecting pipe11will not be caused. In some embodiments, a diameter of the first bending pipe21can be smaller than those of the two first linear pipes22, which can effectively avoid decreasing of flow rate of the fluid media at the first bending pipe21and influencing the heat exchange efficiency of the heat exchanger.

Referring toFIG.1, the heat exchanger core10further includes a flat pipe13, which is configured for discharging the condensate water.

Specifically, the flat pipes13can be vertically disposed. Both ends of the flat pipe13can be connected to the first collecting pipe11and the second collecting pipe12, respectively. Due to action of gravity, when the water in the fluid media achieves a certain degree, the flat pipe13can discharge the condensate water, facilitating discharge of the condensate water. Each of the heat exchanger cores10can include a plurality of flat pipes13. The plurality of flat pipes13can be disposed at intervals along an axis of the first collecting pipe11and an axis of the second collecting pipe12.

In some embodiments, the combined heat exchanger100can further include a liquid separator (not shown). The liquid separator can be located in the first collecting pipe11. Both ends of the first communicating member20can be in communication with the liquid separators in two adjacent first collecting pipes11, respectively, which can facilitate disassembling and replacing of the liquid separator.

Specifically, both ends of the first bending pipe21are provided with flared sections23, respectively, so that the two first linear pipes22can extend into the first bending pipe21, and facilitate connection between the first linear pipe22and the first bending pipe21. The two first linear pipes22can extend into the corresponding flared section23, respectively, and be in communication with the first bending pipe21.

Referring toFIG.1, the second communicating member30can include two second linear pipes32and a second bending pipe31disposed between the two second linear pipes32, and one end of the second linear pipe32can be in communication with the second collecting pipe12and connected to the second collecting pipe12by welding. By assembling and disassembling of the second communicating member30, it is convenient for free assembling and disposing the heat exchanger cores10, and problems of leakage caused by improper bending of the second collecting pipe12will not be caused. In some embodiments, a diameter of the second bending pipe31can be smaller than those of the two second linear pipes32, which can effectively avoid decreasing of flow rate of the fluid media at the second bending pipe31and influencing the heat exchange efficiency of the heat exchanger.

Specifically, a diameter of the second bending pipe31can be greater than a diameter of the first bending pipe21. On condition that the combined heat exchanger core10is used as an evaporator, when a gas-liquid two-phase fluid media flows into the first bending pipe21, a volume of the fluid media may increase after transferring into a gas phase, so that the fluid media may enter into the second bending pipe31from the first collecting pipe11. At this time, since the diameter of the second bending pipe31is greater than the diameter of the first bending pipe21, the second bending pipe31may have enough space for the gas phase fluid media to enter.

Referring toFIG.1, the combined heat exchanger100can further include a connecting member40. The connecting member40can be fixed to sideboards14of the two adjacent heat exchanger cores10. The connecting member40can be configured for improving fixing connection and shielding.

In the present disclosure, the connecting member40can be a plate-shaped metal member, and can be connected to the sideboard14by welding. In some embodiments, the connecting member40can be metal members in other shapes, such as a tube-shaped metal member latched to the sideboard14.

Furthermore, the combined heat exchanger100can further include an inlet pipe50and an outlet pipe60. The inlet pipe50can be in communication with the first collecting pipe11, and the outlet pipe60can be in communication with the second collecting pipe12. In this way, the inlet pipe50and the outlet pipe60can facilitate communication of the fluid media. When the combined heat exchanger100is used as the evaporator, the gas-fluid two-phase fluid medium can enter into the first collecting pipe11via the inlet pipe50, transfer into gas phase by evaporating, and flow into the outlet pipe60via the second collecting pipe12.

In some embodiments, the inlet pipe50and the outlet pipe60can be disposed on a same heat exchanger core10of the at least two heat exchanger cores10. In some embodiments, the inlet pipe50and the outlet pipe60can be disposed on different heat exchanger cores10of the at least two heat exchanger cores10.

In the present disclosure, since the first communicating member20are in communication with the two adjacent first collecting pipes11and the second communicating member30are in communication with the two adjacent second collecting pipes12, two adjacent heat exchanger cores10are in communication to form a combined heat exchanger100without bending the first collecting pipe11or the second collecting pipe12. Conditions such as deformation and surface loss caused by improper bending of the first collecting pipe11or the second collecting pipe12can be avoided, so that the combined heat exchanger100can have improved heat transfer performance and be convenient to assemble or disassemble.

In addition, it should be noted that the terms “first” and “second” are used to qualify the parts only for the purpose of distinguishing the corresponding parts. If not stated otherwise, these words have no special meaning and therefore cannot be construed as limiting the scope of protection of present disclosure.

The technical features of the above-described embodiments may be combined in any combination. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction between the combinations of these technical features, all should be considered as within the scope of present disclosure.

It should be recognized by the skilled in the art that the above embodiments are intended to illustrate the present disclosure only and are not to be used as a limitation of the present disclosure. Appropriate changes and variations to the above embodiments fall within the scope of protection claimed in present disclosure, provided that they are within the substantial spirit of present disclosure.