A heat exchange system

Abstract

The application discloses a heat exchange system, which comprises a condenser provided with first heat exchange elements, an evaporator provided with second heat exchange elements, and at least two groups of circulating assemblies for circulating refrigerant, each group of circulating assemblies comprises a first pipe row, a second pipe row and a circulating pipe connected with the first pipe row and the second pipe row, all the first pipe rows are arranged in the condenser, all the second pipe rows are arranged in the evaporator, the first heat exchange elements are in contact with at least two groups of the first pipe rows and / or the second heat exchange elements are in contact with at least two groups of the second pipe rows; when low load operation is performed, one group of the circulating assemblies in contact with the first heat exchange elements and / or the second heat exchange elements is stopped, other first pipe rows sharing the first heat exchange elements still contact the first heat exchange elements to perform heat release, and other second pipe rows sharing the second heat exchange elements still contact the second heat exchange elements to perform heat absorption, so that the problem that the overall heat exchange area is greatly reduced when low load operation is performed can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical refrigeration, in particular to a heat exchange system. BACKGROUND

[0002] The heat exchange system is widely used in equipment and facilities in the fields of petrochemical industry, semiconductor, building and data center. In order to better adapt to the change of load, the data center machine room air conditioner often uses large-capacity air conditioners. The heat exchange system in the large-capacity air conditioner is designed as multiple systems. Heat is absorbed by multiple evaporators in the room, and heat is released by multiple condensers outside the room, so as to maintain a certain temperature range in the data center machine room.

[0003] In the implementation of the present application, the inventors have found that the prior art at least has the following problems: multiple heat exchange systems are often used to adapt to the change of load. The condensers and evaporators in each heat exchange system are independently arranged. When running at low load, one or more heat exchange systems stop running, and the corresponding condensers and evaporators also stop heat exchange, resulting in a substantial reduction in the overall heat exchange area and affecting the heat exchange efficiency.

[0004] Therefore, how to provide a heat exchange system to improve the above-mentioned disadvantages is a technical problem that those skilled in the art need to solve at present. SUMMARY

[0005] The purpose of the present application is to provide a heat exchange system that can effectively avoid the problem of substantial reduction in the overall heat exchange area when running at low load, thereby improving the heat exchange efficiency.

[0006] To achieve the above-mentioned purpose, the present application provides a heat exchange system, which comprises a condenser provided with first heat exchange elements, an evaporator provided with second heat exchange elements, and at least two groups of circulation assemblies for circulating refrigerant, each group of circulation assemblies comprising a first pipe row, a second pipe row, and a flow-through pipe connected to the first pipe row and the second pipe row. All the first pipe rows are arranged in the condenser, all the second pipe rows are arranged in the evaporator, the first heat exchange elements are in contact with at least two groups of first pipe rows, and / or the second heat exchange elements are in contact with at least two groups of second pipe rows.

[0007] In a possible design, the first pipe row comprises a first shunt pipe, a first flow pipe, and a plurality of first branch pipes. The first shunt pipe is connected to one end of all the first branch pipes in the same first pipe row, and the first flow pipe is connected to the other end of all the first branch pipes in the same first pipe row.

[0008] In a possible design, the second pipe row comprises a second shunt pipe, a second flow pipe, and a plurality of second branch pipes. The second shunt pipe is connected to one end of all the second branch pipes in the same second pipe row, and the second flow pipe is connected to the other end of all the second branch pipes in the same second pipe row.

[0009] In a possible design, all the first branch pipes in the same first pipe row are spaced apart from each other, and the first branch pipes in different first pipe rows are staggered with each other; and / or,

[0010] All the second branch pipes in the same second pipe row are spaced apart from each other, and the second branch pipes in different second pipe rows are staggered with each other.

[0011] In a possible design, the first branch pipes in the same first pipe row are parallel in the extending direction, and the distance between adjacent first branch pipes is equal; and / or,

[0012] The second branch pipes in the same second pipe row are parallel in the extending direction, and the distance between adjacent second branch pipes is equal.

[0013] In a possible design, the flow pipe includes a first flow pipe and a second flow pipe, the first flow pipe is connected to the outlet of the first pipe row and the inlet of the second pipe row, for circulating the refrigerant from the first pipe row to the second pipe row, and the second flow pipe is connected to the outlet of the second pipe row and the inlet of the first pipe row, for circulating the refrigerant discharged from the second pipe row to the first pipe row.

[0014] In a possible design, all the first flow pipes are arranged on the same side relative to the condenser and / or the evaporator; and / or,

[0015] All the second flow pipes are arranged on the same side relative to the condenser and / or the evaporator.

[0016] In a possible design, the circulating assembly is further provided with a liquid storage tank capable of storing refrigerant liquid, the first flow pipe includes a first flow section and a second flow section, the first flow section is connected to the outlet of the first pipe row and the inlet of the liquid storage tank, the second flow section is connected to the outlet of the liquid storage tank and the inlet of the second pipe row, and the second flow section is provided with a first check valve for controlling the flow direction of the refrigerant liquid and a throttling element for controlling the flow rate of the refrigerant liquid.

[0017] In a possible design, the circulating assembly is further provided with a compressor for compressing the low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas, the second flow pipe includes a third flow section and a fourth flow section, the third flow section is connected to the outlet of the second pipe row and the inlet of the compressor, and the fourth flow section is connected to the outlet of the compressor and the inlet of the first pipe row.

[0018] In a possible design, the second flow section is further provided with a fluorine pump connected in parallel with the first check valve; and / or,

[0019] The second flow pipe is further provided with a second check valve connected in parallel with the compressor.

[0020] Compared with the prior art, the heat exchange system provided by the application has at least the following beneficial effects:

[0021] The at least two groups of first pipe rows arranged in the condenser share the first heat exchange element, the at least two groups of second pipe rows arranged in the evaporator share the second heat exchange element, and a circulation assembly for refrigerant flow is formed by connecting the corresponding first pipe row and second pipe row through a group of flow pipes, when low load operation is performed, the circulation assembly contacting the first heat exchange element and / or contacting the second heat exchange element is stopped, that is, the flow of the group of first pipe rows sharing the first heat exchange element and / or the flow of the group of second pipe rows sharing the second heat exchange element is stopped, and other first pipe rows sharing the first heat exchange element still contact the first heat exchange element to perform heat release, and other second pipe rows sharing the second heat exchange element still contact the second heat exchange element to perform heat absorption, thereby avoiding the problem of a large decrease in the overall heat exchange area during low load operation, and further improving the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0023] Figure 1 The structure schematic diagram of the heat exchange system provided by the embodiment of the application;

[0024] Figure 2 The structure schematic diagram of the first pipe row provided by the embodiment of the application;

[0025] Figure 3 The structure schematic diagram of the second pipe row provided by the embodiment of the application;

[0026] Figure 4 The structure schematic diagram of the first pipe row sharing the first heat exchange element provided by the embodiment of the application.

[0027] Among them:

[0028] 100-condenser, 110-fan, 120-first heat exchange element;

[0029] 200-evaporator;

[0030] 300-first pipe row, 310-first shunt pipe, 320-first manifold pipe, 330-first branch pipe;

[0031] 400-second pipe row, 410-second shunt pipe, 420-second manifold pipe, 430-second branch pipe;

[0032] 511 - first flow section, 512 - second flow section, 521 - third flow section, 522 - fourth flow section, 530 - first one-way valve, 540 - throttling element, 550 - compressor, 560 - fluorine pump, 570 - second one-way valve;

[0033] 600 - liquid storage tank. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] In order to enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0036] In the description of the present application, it should be understood that the terms "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0037] The purpose of the present application is to provide a heat exchange system which can avoid the problem of a substantial reduction in the overall heat exchange area during low load operation, thereby improving the heat exchange efficiency.

[0038] Please refer to Figure 1 To achieve the above purpose, the present application provides a heat exchange system, comprising a condenser 100 provided with a first heat exchange element 120, an evaporator 200 provided with a second heat exchange element, and at least two groups of circulation assemblies for circulating refrigerant, each group of circulation assemblies comprising a first pipe row 300, a second pipe row 400, and a flow pipe connected to the first pipe row 300 and the second pipe row 400, all the first pipe rows 300 being arranged in the condenser 100, all the second pipe rows 400 being arranged in the evaporator 200, the first heat exchange element 120 being in contact with at least two groups of first pipe rows 300 and / or the second heat exchange element being in contact with at least two groups of second pipe rows 400.

[0039] At least two groups of first tube rows 300 arranged in the condenser 100 share the first heat exchange element 120, at least two groups of second tube rows 400 arranged in the evaporator 200 share the second heat exchange element, and a circulation assembly for refrigerant flow is formed by connecting the corresponding first tube row 300 and the second tube row 400 through a group of flow-through tubes. When low-load operation is performed, the circulation assembly that contacts the first heat exchange element 120 and / or the second heat exchange element is stopped, that is, the flow-through of the group of first tube rows 300 sharing the first heat exchange element 120 and / or the flow-through of the group of second tube rows 400 sharing the second heat exchange element is stopped, other first tube rows 300 sharing the first heat exchange element 120 still contact the first heat exchange element 120 for heat release, and other second tube rows 400 sharing the second heat exchange element still contact the second heat exchange element for heat absorption, which can avoid the problem of a large decrease in the overall heat exchange area during low-load operation, thereby improving the heat exchange efficiency. In addition, when a group of circulation assemblies is damaged, other circulation assemblies can still continue to absorb heat through the evaporator 200 and release heat through the condenser 100, thereby avoiding the failure of the entire heat exchange system.

[0040] In the embodiment, the first heat exchange element 120 and the second heat exchange element are specifically fins, and the fins can adopt a plate structure. The fins are connected to the at least two groups of first tube rows 300 or the at least two groups of second tube rows 400, and a plurality of through holes suitable for the first tube rows 300 or the second tube rows 400 are formed in the fins. After the at least two groups of first tube rows 300 pass through the corresponding through holes and contact the first heat exchange element 120 composed of a plurality of fins, the refrigerant in the first tube rows 300 releases heat through the fins in the first heat exchange element 120 to reduce the temperature of the refrigerant. After the at least two groups of second tube rows 400 pass through the corresponding through holes and contact the second heat exchange element composed of a plurality of fins, the refrigerant in the second tube rows 400 absorbs heat through the fins in the second heat exchange element to reduce the temperature of the heat source. The number and layout mode of the fins in the first heat exchange element 120 and the second heat exchange element can be adjusted according to actual needs to achieve a better heat transfer effect.

[0041] In addition, the condenser 100 and the evaporator 200 each include a fan 110 for bringing the gas to flow to the surface of the first heat exchange element 120 or the second heat exchange element, that is, to the surface of the corresponding fin, and the fan 110 realizes forced convection heat exchange between the first heat exchange element 120 or the second heat exchange element and the ambient gas. Specifically, the fan 110 of the condenser 100 is used to blow and dissipate heat for the first tube row 300, and the fan 110 of the condenser 100 is used to accelerate the flow of air in the first tube row 300 and the fin surface in contact with the first tube row 300, so as to quickly dissipate the heat of the refrigerant in the first tube row 300, so as to reduce the temperature of the refrigerant; the fan 110 of the evaporator 200 is used to heat exchange between the second tube row 400 and the environment, and the fan 110 of the evaporator 200 is used to accelerate the flow of air to the second tube row 400 and the fin surface in contact with the second tube row 400, so that the air and the refrigerant in the second tube row 400 are quickly heat exchanged, and used to cool the heat source.

[0042] It should be noted that the first heat exchange element 120 of the condenser 100 and the second heat exchange element of the evaporator 200 are shared by two or more sets of circulating assemblies. Each set of circulating assembly constitutes a condenser of the circulating assembly through the first tube row 300 and the first heat exchange element 120 in contact with the first tube row 300 for cooling the refrigerant, and constitutes an evaporator of the circulating assembly through the second tube row 400 and the second heat exchange element in contact with the second tube row 400 for cooling the heat source. Each set of circulating assembly is independently provided except for the shared first heat exchange element 120, the second heat exchange element and the fan 110 for bringing the gas to flow, and the like Figure 1 The first heat exchange element 120, the second heat exchange element and the fan 110 for bringing the gas to flow are shared by two sets of circulating assemblies, and the circulating assemblies can be multiple sets, which will not be described here.

[0043] Please refer to Figure 2 and Figure 4In one embodiment, the first pipe row 300 includes a first distribution pipe 310, a first collection pipe 320, and a plurality of first branch pipes 330. The first distribution pipe 310 is connected to one end of all the first branch pipes 330 in the same first pipe row 300, and the first collection pipe 320 is connected to the other end of all the first branch pipes 330 in the same first pipe row 300. The first pipe row 300 is divided into a plurality of first branch pipes 330. The first distribution pipe 310 distributes the refrigerant to the first branch pipes 330, and the first collection pipe 320 collects the refrigerant that has passed through the first branch pipes 330 and has a reduced temperature. The first branch pipes 330 are arranged at different positions of the first heat exchange element 120, which improves the contact between the first pipe row 300 and the first heat exchange element 120, and further improves the heat dissipation effect of the refrigerant in the first pipe row 300. The number of first branch pipes 330 in the first pipe row 300 can be adjusted according to actual needs, which is not limited here.

[0044] Further, all the first branch pipes 330 in the same first pipe row 300 are spaced apart from each other. By spacing the first branch pipes 330 in the first pipe row 300, space is provided for the flow of air between adjacent first branch pipes 330, which improves the heat exchange effect between the air and the refrigerant in the first branch pipes 330. The first branch pipes 330 in different first pipe rows 300 are arranged in a staggered manner, which facilitates the arrangement of different first pipe rows 300 at different positions of the first heat exchange element 120, avoids the problem of limited heat exchange effect caused by the concentration of the same first pipe row 300 in a specific area of the first heat exchange element 120, and the like. The first branch pipes 330 in the same first pipe row 300 extend in parallel and have equal distances between adjacent first branch pipes 330, so that the first branch pipes 330 in the first pipe row 300 are arranged in an orderly manner. For example, when the first pipe row 300 is two groups and each group of first pipe row 300 includes two first branch pipes 330, the first branch pipes 330 in the two groups of first pipe row 300 can be placed in a staggered manner. When the first pipe row 300 is three groups (the three groups of first pipe row 300 are numbered A, B, and C), and the number of first branch pipes 330 in each group of first pipe row 300 is three (the three first branch pipes 330 in the same first pipe row 300 are numbered 1, 2, and 3), all the first branch pipes 330 can be arranged in an orderly manner on the first heat exchange element 120, i.e., A1, B1, C1, A2, B2, C2, A3, B3, and C3 from top to bottom, so that the first branch pipes 330 in each group of first pipe row 300 are distributed in different areas of the first heat exchange element 120. When two groups of first pipe row 300 are not used or damaged, the other group of first pipe row 300 can still produce good heat exchange effect using the first heat exchange element 120, and the phenomenon of hot air leakage around the unused or damaged first pipe row 300 is avoided.

[0045] Please refer to Figure 3 In one embodiment, the second pipe row 400 includes a second distribution pipe 410, a second collecting pipe 420 and a plurality of second branch pipes 430. The second distribution pipe 410 is connected to one end of all the second branch pipes 430 in the same second pipe row 400, and the second collecting pipe 420 is connected to the other end of all the second branch pipes 430 in the same second pipe row 400. The second pipe row 400 is divided into a plurality of second branch pipes 430. The refrigerant is distributed to the second branch pipes 430 through the second distribution pipe 410, and the refrigerant that has passed through the second branch pipes 430 and absorbed heat is collected through the second collecting pipe 420. This can enable the second branch pipes 430 to be located at different positions of the second heat exchange element, improve the contact effect of the second pipe row 400 and the second heat exchange element, and further improve the heat absorption effect of the refrigerant in the second pipe row 400, thereby better cooling the heat source. The number of second branch pipes 430 in the second pipe row 400 can be adjusted according to actual needs, which is not limited here.

[0046] Further, all the second branch pipes 430 in the same second pipe row 400 are spaced apart. By spacing the second branch pipes 430 in the second pipe row 400, space is provided for the flow of air between adjacent second branch pipes 430, which can improve the heat exchange effect between air and refrigerant in the second branch pipes 430. The second branch pipes in different second pipe rows 400 are arranged in a staggered manner, which facilitates the arrangement of different second pipe rows 400 at various positions of the second heat exchange element, avoids the problem of limited heat exchange effect caused by the concentration of the same second pipe row 400 in a specific area of the second heat exchange element, and the like. The extension direction of the second branch pipes 430 in the same second pipe row 400 is parallel, and the distance between adjacent second branch pipes 430 is equal. For example, when the second pipe row 400 has two groups, and each group of second pipe row 400 includes two second branch pipes 430, the second branch pipes 430 in the two groups of second pipe row 400 can be placed in a staggered manner, so that the second branch pipes 430 in the second pipe row 400 are arranged in an orderly manner. The second branch pipes 430 in each second pipe row 400 are distributed in different areas of the second heat exchange element. When some second pipe rows 400 are not used or damaged, the remaining second pipe rows 400 can still produce good heat exchange effect using the second heat exchange element, and the phenomenon of hot air leakage around the unused or damaged second pipe rows 400 is avoided.

[0047] In one embodiment, the flow pipe includes a first flow pipe and a second flow pipe, the first flow pipe is connected to the outlet of the first pipe row 300 and the inlet of the second pipe row 400 for the circulation of the refrigerant from the first pipe row 300 to the second pipe row 400, and the second flow pipe is connected to the outlet of the second pipe row 400 and the inlet of the first pipe row 300 for the circulation of the refrigerant discharged from the second pipe row 400 to the first pipe row 300, so that the circulation of the refrigerant in the group of circulating assemblies is realized, the refrigerant circulated to the second pipe row 400 is converted into refrigerant gas by absorbing heat through the second heat exchange element, and then the refrigerant gas is blown and cooled to be converted into refrigerant liquid when circulated to the first pipe row 300, and then the refrigerant liquid is circulated to the second pipe row 400 again for heat exchange.

[0048] Further, all the first flow pipes can be arranged on the same side relative to the condenser 100 and / or the evaporator 200, and / or all the second flow pipes can be arranged on the same side relative to the condenser 100 and / or the evaporator 200, so that the first flow pipes and the second flow pipes in the groups of circulating assemblies are arranged in order, the occupied space of the heat exchange system is reduced, and the excessive heat exchange between the refrigerant and the environment when the refrigerant flows in different first flow pipes is reduced. Specifically, when there is only one first flow pipe in a certain area, the refrigerant in the first flow pipe exchanges heat with the environment and loses cold energy when circulated, and at this time, the temperature of the environment rises correspondingly. When a second first flow pipe is additionally arranged in the environment, the refrigerant in the second first flow pipe exchanges less cold energy with the environment, which is beneficial to reduce the loss of cold energy of the entire heat exchange system.

[0049] In one embodiment, the circulating assembly is further provided with a liquid storage tank 600 capable of storing refrigerant liquid, the first flow pipe includes a first flow section 511 and a second flow section 512, the first flow section 511 is connected to the outlet of the first pipe row 300 and the inlet of the liquid storage tank 600, and the second flow section 512 is connected to the outlet of the liquid storage tank 600 and the inlet of the second pipe row 400, the second flow section 512 is provided with a first one-way valve 530 for controlling the flow direction of the refrigerant liquid and a throttling element 540 for controlling the flow rate of the refrigerant liquid, and the circulating assembly is further provided with a compressor 550 for compressing the low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas, the second flow pipe includes a third flow section 521 and a fourth flow section 522, the third flow section 521 is connected to the outlet of the second pipe row 400 and the inlet of the compressor 550, and the fourth flow section 522 is connected to the outlet of the compressor 550 and the inlet of the first pipe row 300.

[0050] When the circulation assembly is in operation, the compressor 550 outputs refrigerant into the condenser 100 for condensation, for example, high-temperature and high-pressure refrigerant gas can be outputted into the first tube bank 300 along the fourth flow passage 522 and then condensed in the condenser 100. The condensed refrigerant, for example, medium-temperature and high-pressure refrigerant liquid, enters the liquid accumulator 600 along the first flow passage 511 for cooling, and the cooled refrigerant enters the second tube bank 400 along the second flow passage 512 after being throttled by the throttling element 540, and then is cooled and radiated in the evaporator 200 to cool the target device. Specifically, the throttling element 540 throttles the refrigerant outputted from the liquid accumulator 600 into a low-temperature and low-pressure gas-liquid mixture (or refrigerant liquid), and the throttled refrigerant absorbs heat and evaporates into low-temperature and low-pressure refrigerant gas after entering the second tube bank 400, and then returns to the compressor 550 along the third flow passage 521 for continuous circulation.

[0051] In some application scenarios, after the compressor 550 stops running, the refrigerant in the high-pressure pipeline migrates to the low-pressure pipeline through the throttling element 540 due to the lower temperature and pressure in the second tube bank 400. To effectively overcome the above problem, the throttling element 540 includes a solenoid valve and a throttling valve connected in series, so that after the compressor 550 stops running, the solenoid valve and the throttling valve can be controlled to be closed, effectively preventing the refrigerant in the high-pressure pipeline from migrating to the low-pressure pipeline through the throttling element 540, for example, the refrigerant liquid stored in the liquid accumulator 600 flows into the second tube bank 400. Further, it can also ensure that there is sufficient refrigerant liquid in front of the throttling element 540 when the compressor 550 is started again, so as to provide sufficient refrigeration output. By using a solenoid valve with good shutoff performance and a general throttling valve, the system can be effectively protected from accidental power failure and the high and low pressure pipelines can be quickly cut off, reducing the risk caused by refrigerant migration. It can be understood that the throttling valve can include an electronic expansion valve or a capillary tube or a thermal expansion valve.

[0052] In one of the embodiments, the second flow passage 512 is further provided with a fluorine pump 560 in parallel with the first one-way valve 530, and the second flow passage is further provided with a second one-way valve 570 in parallel with the compressor 550, so that the heat exchange system is divided into a compressor 550 mode and a fluorine pump 560 mode. When the outdoor temperature is high in summer and over-season, the compressor 550 mode is run, the evaporator 200 exchanges heat with the indoor air under the action of the fan 110, absorbs the indoor air temperature, and the low-temperature and low-pressure gas-liquid two-phase refrigerant in the evaporator 200 becomes low-temperature and low-pressure refrigerant gas. The low-temperature and low-pressure refrigerant gas is compressed by the compressor 550 through the third flow passage 521, and then becomes high-temperature and high-pressure refrigerant gas through the fourth flow passage 522 into the outdoor condenser 100. The high-temperature and high-pressure refrigerant gas exchanges heat with the outdoor air under the action of the fan 110 and releases heat into the outdoor air. After releasing heat, the high-temperature and high-pressure refrigerant gas becomes liquid, flows through the first flow passage 511 to the liquid storage tank 600, and then passes through the first one-way valve 530 and the throttling element 540 to become low-temperature and low-pressure gas-liquid two-phase refrigerant, and then enters the evaporator 200 to continue to absorb heat from the indoor air. The above process is repeated continuously. When the outdoor air temperature is low in winter, the fluorine pump 560 mode is run, the compressor 550 is closed, and the refrigerant bypasses the compressor 550 and passes through the second one-way valve 570 in parallel with the compressor 550 to realize the refrigeration cycle.

[0053] It should be noted that the relational terms such as first and second, and the like, are used merely to distinguish one entity from another entity, and do not require or imply that these entities exist in any actual relationship or order.

[0054] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0055] The principles and implementation manners of the present application are described by using specific examples in this paper. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be noted that the ordinary skilled in the art can make some improvements and modifications to the present application without departing from the principles of the present application. These improvements and modifications also fall within the protection scope of the present application.

Claims

1. A heat exchange system, characterized by, The application relates to a refrigeration cycle device, which comprises a condenser (100) provided with first heat exchange elements (120), an evaporator (200) provided with second heat exchange elements, and at least two groups of circulation assemblies for refrigerant circulation, each group of the circulation assemblies comprising a first pipe row (300), a second pipe row (400), and a circulation pipe connected to the first pipe row (300) and the second pipe row (400), all the first pipe rows (300) being arranged in the condenser (100), all the second pipe rows (400) being arranged in the evaporator (200), the first heat exchange elements (120) being in contact with at least two groups of the first pipe rows (300) and / or the second heat exchange elements being in contact with at least two groups of the second pipe rows (400). The first pipe row (300) comprises a first branch pipe (310), a first collecting pipe (320), and a plurality of first branch pipes (330), the first branch pipe (310) being connected to one end of all the first branch pipes (330) in the same first pipe row (300), and the first collecting pipe (320) being connected to the other end of all the first branch pipes (330) in the same first pipe row (300). The second pipe row (400) comprises a second branch pipe (410), a second collecting pipe (420), and a plurality of second branch pipes (430), the second branch pipe (410) being connected to one end of all the second branch pipes (430) in the same second pipe row (400), and the second collecting pipe (420) being connected to the other end of all the second branch pipes (430) in the same second pipe row (400). All the first branch pipes (330) in the same first pipe row (300) are spaced from each other, and the first branch pipes (330) in different first pipe rows (300) are arranged in an interlaced mode; and / or, All the second branch pipes (430) in the same second pipe row (400) are spaced from each other, and the second branch pipes (430) in different second pipe rows (400) are arranged in an interlaced mode. The first branch pipes (330) in the same first pipe row (300) extend in parallel, and the distance between adjacent first branch pipes (330) is equal; and / or, The second branch pipes (430) in the same second pipe row (400) extend in parallel, and the distance between adjacent second branch pipes (430) is equal.

2. The heat exchange system according to claim 1, wherein The circulation pipe comprises a first circulation pipe and a second circulation pipe, the first circulation pipe being connected to the outlet of the first pipe row (300) and the inlet of the second pipe row (400) for the circulation of refrigerant from the first pipe row (300) to the second pipe row (400), and the second circulation pipe being connected to the outlet of the second pipe row (400) and the inlet of the first pipe row (300) for the circulation of refrigerant discharged from the second pipe row (400) to the first pipe row (300).

3. The heat exchange system according to claim 2, wherein All the first flow pipes are arranged on the same side relative to the condenser (100) and / or the evaporator (200); and / or, All the second flow pipes are arranged on the same side relative to the condenser (100) and / or the evaporator (200).

4. The heat exchange system according to claim 2 or 3, characterized in that, The circulating assembly is further provided with a liquid storage tank (600) capable of storing refrigerant liquid, the first flow pipe comprises a first flow section (511) and a second flow section (512), the first flow section (511) is communicated with the outlet of the first pipe row (300) and the inlet of the liquid storage tank (600), the second flow section (512) is communicated with the outlet of the liquid storage tank (600) and the inlet of the second pipe row (400), and the second flow section (512) is provided with a first one-way valve (530) for controlling the flow direction of the refrigerant liquid and a throttling element (540) for controlling the flow rate of the refrigerant liquid.

5. The heat exchange system of claim 4, wherein, The circulating assembly is further provided with a compressor (550) for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas, the second flow pipe comprises a third flow section (521) and a fourth flow section (522), the third flow section (521) is communicated with the outlet of the second pipe row (400) and the inlet of the compressor (550), and the fourth flow section (522) is communicated with the outlet of the compressor (550) and the inlet of the first pipe row (300).

6. The heat exchange system according to claim 5, wherein The second flow section (512) is further provided with a fluorine pump (560) connected in parallel with the first one-way valve (530); and / or, The second flow pipe is further provided with a second one-way valve (570) connected in parallel with the compressor (550).

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