Composite heat exchange equipment

Abstract

The invention relates to the technical field of heat exchange, and provides composite heat exchange equipment. The composite heat exchange equipment comprises a first refrigerating loop, a second refrigerating loop and a mounting base, each of the first refrigerating loop and the second refrigerating loop comprises a condenser and an evaporator which are communicated with each other; the mounting base is provided with a first mounting space and an air return port and an air supply port communicated with the first mounting space, the air return port and the air supply port are arranged at intervals, the air supply port is used for communicating with an air inlet of a heating terminal, and the air return port is used for communicating with an air outlet of the heating terminal; the mounting base is further provided with a second mounting space separated from the first mounting space, the second mounting space communicates with the external environment, the evaporator is mounted in the first mounting space, and the condenser is mounted in the second mounting space. According to the composite heat exchange equipment, on the basis that efficient refrigeration is met, the overall reliability is improved, the splicing gap and the pipeline length are reduced, the fault rate is reduced, and replacement and maintenance are convenient.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a composite heat exchange device. Background Art

[0002] With the development of the communications industry and the continuous improvement of the degree of social informatization, both communications operators and enterprises need to build a large number of data centers. Data centers are integrated technology platforms that ensure the security of information transmission and storage. With the rapid development of the Internet, data centers are particularly important. In addition, since IT equipment, communication equipment and UPS (Uninterruptible Power Supply) run uninterruptedly throughout the year, the equipment in the data center will generate a lot of heat. In order to prevent the equipment from overheating and damage, it is usually necessary to set up a refrigeration unit to meet the cooling needs of the data center.

[0003] However, the refrigeration units currently used in the communications industry often face problems such as many gaps in the heat exchange structure joints, long pipelines, and leakage in actual use. The reliability of use is low and requires regular maintenance or replacement. In addition, the heat exchange structure in the refrigeration units currently used is inconvenient to replace, especially after a failure, it is difficult to reconfigure an adaptive device. Summary of the invention

[0004] Based on this, it is necessary to provide a composite heat exchange equipment that improves overall reliability, reduces splicing gaps and pipeline lengths, reduces failure rates, and is easy to replace and maintain while meeting the requirements of efficient refrigeration.

[0005] A composite heat exchange device comprises a first refrigeration circuit, a second refrigeration circuit and a mounting base; the first refrigeration circuit and the second refrigeration circuit both comprise a condenser and an evaporator which can be interconnected; the mounting base is provided with a first mounting space and a return air inlet and an air supply inlet which are connected to the first mounting space, the return air inlet and the air supply inlet are arranged at intervals, the air supply inlet is used to connect to the air inlet of a heating terminal, and the return air inlet is used to connect to the air outlet of the heating terminal; the mounting base is also provided with a second mounting space which is separated from the first mounting space, the second mounting space is connected to the external environment, the evaporator is installed in the first mounting space, and the condenser is installed in the second mounting space.

[0006] It is understandable that the arrangement of the first refrigeration circuit and the second refrigeration circuit can meet different refrigeration conditions and meet refrigeration needs. In this process, the condenser and evaporator in the first refrigeration circuit and the condenser and evaporator in the second refrigeration circuit can be assembled into an integrated structure by using the arrangement of the mounting base. In this way, the composite heat exchange device can be assembled relative to the heating terminal as an integral structure, and the overall assembly can be realized during manufacturing. The refrigerant inside can also be filled, debugged and other operations before leaving the factory, which saves the process and time of assembling the condenser and evaporator on site. Moreover, it is precisely because the condenser and the evaporator are integrated and assembled on the mounting base that the pipeline length is reduced and the overall reliability is improved. At the same time, the mounting base is used to separate the first installation space and the second installation space, so that the condenser and the evaporator in the first refrigeration circuit and the second refrigeration circuit are respectively installed in two different installation spaces, that is, the assembly separation of the condenser and the evaporator is met, so that the two are relatively independent and do not interfere with each other. In this way, when one of them needs to be repaired or replaced, it will not interfere with the assembly of the other, and it is easier to repair and replace.

[0007] In some embodiments, the first refrigeration circuit and the second refrigeration circuit are not connected to each other.

[0008] In some embodiments, along the vertical direction of the composite heat exchange device, the air supply outlet is located below the air return outlet.

[0009] In some embodiments, the air supply port and the air return port are both arranged on a side wall of the first installation space facing away from the second installation space.

[0010] In some embodiments, the diameter of the air supply outlet is larger than the diameter of the return air outlet; the composite heat exchange device also includes a first air duct; the air supply outlet and the return air outlet are both equipped with the first air duct, the first air duct installed at the air supply outlet is used to connect to the air inlet of the heating terminal, and the first air duct installed at the return air outlet is used to connect to the air outlet of the heating terminal.

[0011] In some embodiments, the return air outlet is arranged on a side wall of the first installation space facing away from the second installation space, and the supply air outlet is arranged at the bottom of the first installation space; the composite heat exchange device also includes a second air duct, one end of the second air duct is connected to the return air outlet, and the other end is used to connect to the air outlet of the heating terminal.

[0012] In some embodiments, the mounting base includes a mounting substrate and an assembly box connected to the mounting substrate, the assembly box is provided with the first mounting space, and the portion located on the outer periphery of the assembly box and away from the air supply port and the air outlet is defined as the second mounting space; or, the mounting base includes a mounting substrate and a mounting partition connected to the mounting substrate, the mounting partition is arranged at an angle to the mounting substrate, the first mounting space is located on one side of the mounting partition in the thickness direction, and the second mounting space is located on the other side.

[0013] In some embodiments, the first refrigeration circuit corresponds to the first condenser and the first evaporator; the first refrigeration circuit also includes a compressor and an expansion element, the compressor is connected between the inlet of the first condenser and the outlet of the first evaporator, and the expansion element is connected between the outlet of the first condenser and the inlet of the first evaporator; the second refrigeration circuit corresponds to the second condenser and the second evaporator; the second condenser and the second evaporator both adopt heat pipe heat exchangers, and along the vertical direction of the composite heat exchange equipment, the installation height of the second condenser is greater than the installation height of the second evaporator.

[0014] In some embodiments, the first evaporator adopts a fluorine heat exchanger; the fluorine heat exchanger includes a first heat exchange channel and a second heat exchange channel, both ends of the first heat exchange channel are connected to the first condenser to define the first refrigeration circuit, and both ends of the second heat exchange channel are connected to the second evaporator to define a third refrigeration circuit.

[0015] In some embodiments, the second refrigeration circuit also includes a second inlet pipe and a second outlet pipe, the second inlet pipe is connected between the outlet of the second condenser and the inlet of the second evaporator, and the second outlet pipe is connected between the outlet of the second evaporator and the inlet of the second condenser; a first control valve is provided on the second outlet pipe, and a connecting pipeline is connected between the second outlet pipe and the second heat exchange channel, a second control valve is provided on the connecting pipeline, and the other end of the second heat exchange channel is connected to the second evaporator; the first control valve is used to regulate the on-off of the second outlet pipe, and the second control valve is used to regulate the on-off of the connecting pipeline.

[0016] In some embodiments, temperature sensors are respectively disposed in the first installation space and the second installation space, and the first control valve and the second control valve are both configured to adjust opening and closing in response to detection signals from the temperature sensors.

[0017] In some embodiments, the first installation space corresponds to a first temperature sensor, and the second installation space corresponds to a second temperature sensor; when the detection signal of the first temperature sensor is less than the detection signal of the second temperature sensor, the compression is in operation, the first control valve is configured to be closed, the second control valve is configured to be open, the third refrigeration circuit is connected to the first refrigeration circuit, and the first heat exchange channel is used to exchange heat with the second heat exchange channel; when the detection signal of the first temperature sensor is greater than or equal to the detection signal of the second temperature sensor, the compressor is in a closed state, the first control valve is configured to be open, the second control valve is configured to be closed, the third refrigeration circuit is disconnected, and the second refrigeration circuit is connected.

[0018] In some of the embodiments, the composite heat exchange device further includes a humidifying structure installed in the second installation space, the humidifying structure is installed close to the condenser, and the humidifying structure is used to humidify the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is the first schematic diagram of the composite heat exchange equipment provided in this application.

[0021] Figure 2 This is the first schematic diagram of the combination of the composite heat exchange device and the heating terminal provided in this application.

[0022] Figure 3 This is a second schematic diagram of the combination of the composite heat exchange device and the heating terminal provided in this application.

[0023] Figure 4 This is the second schematic diagram of the composite heat exchange equipment provided in this application.

[0024] Reference numerals: 100, composite heat exchange device; 110, first refrigeration circuit; 111, first evaporator; 112, first condenser; 113, compressor; 114, expansion element; 115, first inlet pipe; 116, first outlet pipe; 120, second refrigeration circuit; 121, second evaporator; 122, second condenser; 123, second inlet pipe; 124, second outlet pipe; 125, first control valve; 130, mounting base; 140, third refrigeration circuit; 1 01. First installation space; 102. Second installation space; 103. Air supply outlet; 104. Air return outlet; 151. First air duct; 152. Second air duct; 160. Humidification structure; 161. Water pump; 171. Suction fan; 172. Blowing fan; 180. Condensing fan; 190. Connecting pipeline; 191. Second control valve; 1111. First heat exchange channel; 1112. Second heat exchange channel; 200. Heating terminal; 201. Air inlet; 202. Air outlet. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0030] See also Figures 1 to 4 As shown, an embodiment of the present application provides a composite heat exchange device 100, including a first refrigeration circuit 110, a second refrigeration circuit 120 and a mounting base 130, the first refrigeration circuit 110 includes a first condenser 112 and a first evaporator 111 that can be interconnected, and the second refrigeration circuit 120 includes a second condenser 122 and a second evaporator 121 that are interconnected. At the same time, the mounting base 130 is constructed with a first mounting space 101 and a return air port 104 and an air supply port 103 connected to the first mounting space 101, the return air port 104 and the air supply port 103 are arranged at intervals, the air supply port 103 is used to connect to the air inlet 201 of the heating terminal 200, and the return air port 104 is used to connect to the air outlet 202 of the heating terminal 200; and the mounting base 130 is also constructed with a second mounting space 102 separated from the first mounting space 101, the second mounting space is connected to the external environment, the first evaporator 111 and the second evaporator 121 are both installed in the first mounting space 101, and the first condenser 112 and the second condenser 122 are both installed in the second mounting space 102.

[0031] It is understandable that the first refrigeration circuit 110 and the second refrigeration circuit 120 are both used to meet the refrigeration needs of the heating terminal 200. The two can be used together to meet different refrigeration conditions and improve the refrigeration efficiency. In this process, due to the first installation space 101 and the second installation space 102 separated by the installation base 130, the first condenser 112 and the first evaporator 111, and the second condenser 122 and the second evaporator 121 can be respectively arranged in two different installation spaces, so as to meet the assembly separation of the condenser and the evaporator, so that the two are relatively independent and do not interfere with each other, which is effective in reducing the heat exchange between the condenser and the evaporator. In addition, when one of them needs to be repaired or replaced, it will not interfere with the assembly of the other, so it is easier to repair and replace; and even if the condenser leaks, it will not affect the evaporator, so such a setting is protective for the evaporator to ensure the heat exchange effect of the evaporator.

[0032] Moreover, due to the setting of the mounting base 130, the various structures in the first refrigeration circuit 110 and the second refrigeration circuit 120 can be assembled into an integrated structure, especially the corresponding evaporators and condensers in each refrigeration circuit can be assembled into an integrated structure. Therefore, the composite heat exchange device 100 in this embodiment can realize the overall assembly of the evaporator and the condenser during manufacturing by using the setting of the mounting base, that is, providing the same installation reference, and there is no need to consider the adaptation and avoidance with other structures on site. Therefore, the refrigerant inside can also be filled, debugged and other operations before leaving the factory, so as to reduce the splicing gap as much as possible, thus saving the on-site assembly process and time consumption; and, such a setting constrains the pipeline connected between the condenser and the corresponding evaporator, reduces the length of the pipeline, and avoids the performance attenuation, reliability reduction and other problems caused by the use of long pipelines as much as possible, saving costs. In addition, such a setting can also disassemble and assemble the composite heat exchange device 100 as an integral structure relative to the heating terminal 200, further reducing the splicing gap and assembly process during the assembly process, and making the operation more convenient and safe.

[0033] In actual use, the evaporator located in the first installation space 101 can absorb heat to cool the surrounding air, and the cooled cold air flow can be sent to the heating terminal 200 through the air supply port 103; the refrigerant after absorbing heat will flow to the condenser for condensation, heat release and cooling, and after dissipating the heat to the external environment, it will flow to the evaporator to continue absorbing heat, so that a refrigeration cycle can be formed. At the same time, the cold air flow enters the heating terminal 200 to absorb heat and become a hot air flow, and can flow to the return air port 104 through the air outlet 202 of the heating terminal 200 and enter the first installation space 101, so as to release heat and become a cold air flow again under the action of the evaporator, and then it can be sent to the heating terminal 200 through the air supply port 103 again. In this process, the first refrigeration circuit 110 and the second refrigeration circuit 120 can be regulated according to temperature changes, and one or the other can be used in combination. The specific use of the two refrigeration circuits will be described in detail later.

[0034] The first refrigeration circuit 110 and the second refrigeration circuit 120 are independent of each other and are not connected. In this way, the working influence between the two is reduced, especially when switching between different working conditions, the risk of equipment failure caused by different refrigerant filling amounts is reduced, and the reliability of use is improved.

[0035] It is worth noting that the small arrows in the figure indicate the direction of refrigerant flow, and the large arrows indicate the direction of gas flow.

[0036] Please continue reading Figures 1 to 4 Exemplarily, the composite heat exchange device 100 also includes an air suction fan 171 installed in the first installation space 101. The air suction fan 171 is installed at the air supply port 103 to provide power for the flow of air, so as to facilitate the delivery of the cold air flow in the first installation space 101 into the heating terminal 200 to take away the heat in the heating terminal 200. The heated air flow can be delivered into the first installation space 101 from the return air port 104 for cooling.

[0037] In an alternative embodiment, the composite heat exchange device 100 further includes a blower fan 172 installed in the first installation space 101, and the blower fan 172 is installed at the return air port 104. The setting of the blower fan 172 is also used to provide power for the air flow. In some embodiments, the blower fan 172 and the suction fan 171 can be used at the same time.

[0038] It is worth noting that both the suction fan 171 and the blowing fan 172 can be provided in plurality and arranged at intervals to provide sufficient gas flow power.

[0039] Please continue reading Figures 1 to 4Furthermore, the composite heat exchange device 100 also includes a condensing fan 180 installed in the second installation space 102. The second installation space 102 is connected to the external environment. Under the action of the condensing fan 180, the heat generated when the condenser is working is taken out of the entire composite heat exchange device 100, thereby maintaining the stable operation of the device. In actual use, since the condenser and the evaporator are installed as an integrated structure based on the installation base 130, the air flow path is shortened and the wind resistance is reduced. Therefore, the condensing fan 180 can use an axial flow fan, thereby saving energy consumption and reducing fan noise.

[0040] Please continue reading Figures 1 to 4 In an optional embodiment, along the vertical direction of the composite heat exchange device 100, the air supply port 103 is located below the return air port 104. Since the air supply port 103 delivers cold air to the heating terminal 200, the heating terminal 200 absorbs heat and heats up to hot air, and the hot air flows upward, and then flows from the upper return air port 104 to the first installation space 101 for cooling.

[0041] Please combine Figure 1 and Figure 2 As shown, in an optional embodiment, the air supply port 103 and the air return port 104 are both arranged on a side wall of the first installation space 101 away from the second installation space 102. At this time, the composite heat exchange device 100 can be installed on the side of the heating terminal 200 to meet the cooling demand; and, since the air supply port 103 is located below the air return port 104, the corresponding air inlet 201 on the heating terminal 200 is located below the air outlet 202. When cooling, the cold air flow flows from the lower air supply port 103 through the air inlet 201 into the interior of the heating terminal 200, and after contacting the heat, it is heated to become a hot air flow and flows out from the air outlet 202, and flows into the first installation space 101 through the return air port 104.

[0042] Among them, the diameter of the air supply port 103 is larger than that of the return air port 104 to ensure that more cold air flow can be delivered to the heating terminal 200 to ensure the cooling capacity; and such a setting can also ensure that sufficient cold air flow is in full contact with the heating terminal 200 to improve the cooling efficiency.

[0043] Furthermore, the axis of the air supply port 103 and the axis of the air return port 104 are parallel or close to parallel, and are arranged at an angle to the vertical direction. In this way, the resistance and loss of the gas flowing between the first installation space 101 and the heating terminal 200 are reduced, and the cooling capacity and cooling efficiency are further guaranteed.

[0044] See also Figure 2In some embodiments, the composite heat exchange device 100 further includes a first air duct 151, and two first air ducts 151 are provided, which are respectively installed at the air supply port 103 and the return air port 104, so as to connect the air supply port 103 and the return air port 104 with the air inlet 201 and the air outlet 202 of the heating terminal 200 respectively; and the setting of the first air duct 151 can separate the airflow flowing through the air supply port 103 and the airflow flowing through the return air port 104, so as to avoid mutual influence and reduce the cooling capacity. In an alternative embodiment, the air supply port 103 and the return air port 104 can also be separated by the setting of a partition; or, the edge of the air supply port 103 can be directly connected with the edge of the air inlet 201 in the heating terminal 200, and the edge of the return air port 104 can be directly connected with the edge of the air outlet 202 in the heating terminal 200. Regardless of the specific configuration, it is sufficient to ensure that the gas path flowing along the air supply port 103 and the gas path flowing along the air return port 104 are independent of each other and do not interfere with each other.

[0045] See also Figure 3 As shown, in an optional embodiment, only the return air port 104 may be arranged on a side wall of the first installation space 101 away from the second installation space 102, and the air supply port 103 may be arranged at the bottom of the first installation space 101. In this case, the composite heat exchange device 100 may be installed on the top of the heating terminal 200, and the composite heat exchange device 100 further includes a second air duct 152, one end of the second air duct 152 is connected to the return air port 104, and the other end is used to connect to the air outlet 202 of the heating terminal 200. Among them, the air inlet 201 and the air outlet 202 of the heating terminal 200 are both located at the top thereof.

[0046] Furthermore, the second air duct 152 extends vertically from the air outlet 202 of the heating terminal 200 to the air return port 104 to ensure sufficient circulation area. Specifically, the length of the second air duct 152 may be substantially the same as the height of the first installation space 101 in the vertical direction.

[0047] The structure of the mounting base 130 will be described below.

[0048] See also Figures 1 to 4 In an optional embodiment, the mounting base 130 includes a mounting substrate and an assembly box connected to the mounting substrate, the assembly box is surrounded by a first mounting space 101, and the portion located on the outer periphery of the assembly box and away from the air supply port 103 and the air return port 104 is defined as a second mounting space 102.

[0049] Specifically, the assembly box has a first side plate that is opposite and spaced in the vertical direction and a second side plate that is opposite and spaced in the X-axis direction, and the size of the mounting substrate is larger than the size of the first side plate. The mounting substrate can be divided into a first part and a second part along the X-axis direction, the assembly box is installed in the first part, and the second part and one of the second side plates of the assembly box are jointly enclosed to form a second installation space 102 for installing the first condenser 112 and the second condenser 122, and the other second side plate can be provided with an air supply port 103 and an air return port 104. The setting of the assembly box can protect the evaporator installed therein, reduce the influence of external factors such as rain, snow, etc. on the evaporator, thereby ensuring that the evaporator has a higher heat exchange capacity to provide a higher cooling capacity. At the same time, in order to meet the assembly stability, a mounting bracket can be set on the second part of the mounting substrate to support the first condenser 112 and the second condenser 122. The first evaporator 111 and the second evaporator 121 are both installed in the assembly box. In this way, the division of the first installation space 101 and the second installation space 102 can be satisfied, so as to realize the assembly separation of the condenser and the evaporator.

[0050] In summary, when the composite heat exchange device 100 is used for air conditioning, the assembly box can be equivalent to the air conditioning box, in which case the evaporator is installed in the air conditioning box and the condenser is installed outdoors. It only needs to realize the assembly separation of the evaporator and the condenser.

[0051] In a replaceable embodiment, the mounting base 130 includes a mounting substrate and a mounting baffle connected to the mounting substrate, the mounting baffle is placed vertically, and the mounting substrate is placed horizontally, so that the mounting baffle and the mounting substrate are set at an angle, specifically, they can be set vertically. At this time, the space on one side of the mounting baffle in the thickness direction is defined as the first mounting space 101, and the space on the other side is defined as the second mounting space 102. Such an arrangement can also achieve the assembly separation of the condenser and the evaporator. An assembly hole can be opened on the mounting baffle for passing through a pipe connected to the condenser and the corresponding evaporator. In this embodiment, the mounting base 130 can also include a plurality of side panels, and the plurality of side panels are connected to the mounting baffle and the mounting substrate to jointly enclose the first mounting space 101.

[0052] It should be supplemented that, when the air outlet 103 is located at the bottom of the first installation space 101 , a through hole needs to be opened at a corresponding position on the installation substrate to form the air outlet 103 .

[0053] The specific structures of the first refrigeration circuit 110 and the second refrigeration circuit 120 will be described below.

[0054] See also Figures 1 to 4In an optional embodiment, the first refrigeration circuit 110 further includes a compressor 113 and an expansion element 114, wherein the compressor 113 is connected between the inlet of the first condenser 112 and the outlet of the first evaporator 111, and the expansion element 114 is connected between the outlet of the first condenser 112 and the inlet of the first evaporator 111. In this way, the first refrigeration circuit 110 can form a compression refrigeration unit to ensure a high refrigeration efficiency; and the compression refrigeration unit is less affected by the environment and can ensure long-term and efficient refrigeration needs. The compressor 113 is installed in the second installation space 102 to ensure that the first installation space 101 has sufficient heat exchange space; and, since the compressor 113 generates heat when working, such a setting can also reduce the consumption of cold air flow in the first installation space 101 to ensure that there is sufficient cold air flow for refrigeration of the heating terminal 200.

[0055] In actual use, the first refrigeration circuit 110 and the second refrigeration circuit 120 both include a delivery pipe and an inlet pipe. The inlet pipe is connected between the condenser outlet and the corresponding evaporator inlet, and the delivery pipe is connected between the evaporator outlet and the corresponding condenser inlet.

[0056] Specifically, the first refrigeration circuit 110 corresponds to the first delivery pipe 116 and the first inlet pipe 115, and the second refrigeration circuit 120 corresponds to the second delivery pipe 124 and the second inlet pipe 123. Then: the two ends of the first inlet pipe 115 are respectively connected to the outlet of the first condenser 112 and the inlet of the first evaporator 111, and the two ends of the first delivery pipe 116 are respectively connected to the outlet of the first evaporator 111 and the inlet of the first condenser 112, so as to form a circulating first refrigeration circuit 110; at the same time, the two ends of the second inlet pipe 123 are respectively connected to the outlet of the second condenser 122 and the inlet of the second evaporator 121, and the two ends of the second delivery pipe 124 are respectively connected to the outlet of the second evaporator 121 and the inlet of the second condenser 122, so as to form a circulating second refrigeration circuit 120. Since the first refrigeration circuit 110 adopts a compression refrigeration unit, the compressor 113 can be installed on the first delivery pipe 116, and the expansion element 114 can be installed on the first inlet pipe 115.

[0057] It should be added that the flow from the first installation space 101 to the second installation space 102 is the delivery, and the flow from the second installation space 102 to the first installation space 101 is the delivery. Therefore, the flow from the outlet of the evaporator to the inlet of the condenser corresponds to the delivery pipe, and the flow from the outlet of the condenser to the inlet of the evaporator corresponds to the delivery pipe.

[0058] In actual use, the low-temperature and low-pressure gas-liquid two-phase refrigerant absorbs heat in the first evaporator 111 and becomes a low-temperature and low-pressure gaseous refrigerant, and flows along the first delivery pipe 116 to the compressor 113, and is compressed into a high-temperature and high-pressure gaseous refrigerant by the compressor 113; then, it continues to flow along the first delivery pipe 116 to the first condenser 112 to release heat to form a medium-temperature and high-pressure liquid refrigerant; then, it flows along the first inlet pipe 115 to the expansion element 114 to throttle and expand to become a low-temperature and low-pressure gas-liquid two-phase refrigerant, and then continues to flow along the first inlet pipe 115 to the first evaporator 111, and enters the cycle again. In this process, the high-temperature gas flowing into the first installation space 101 can release heat and cool down under the action of the first evaporator 111, and become a cold air flow, and then be sent to the heating terminal 200 through the air outlet 103 for circulation. At the same time, due to the setting of the second refrigeration circuit 120, it is equivalent to increasing the refrigeration capacity of the entire composite heat exchange device 100 to fully perform refrigeration.

[0059] The expansion element 114 may be an electronic expansion valve, and the compressor 113 may be a magnetically suspended high-efficiency compressor 113 to ensure high-efficiency refrigeration.

[0060] See also Figures 1 to 4 Optionally, in the second refrigeration circuit 120, the second condenser 122 and the second evaporator 121 both use heat pipe heat exchangers, that is, the second refrigeration circuit 120 uses a heat pipe refrigeration unit. At this time, the installation height of the second condenser 122 in the vertical direction is greater than the installation height of the second evaporator 121 in the vertical direction, which promotes the refrigerant to flow and circulate under the action of gravity. Specifically, the liquid refrigerant after condensation and cooling by the second condenser 122 can flow to the second evaporator 121 under the action of gravity to absorb heat for airflow refrigeration in the first installation space 101, and the gaseous refrigerant after absorbing heat and vaporization can rise to the second condenser 122 for condensation to circulate again.

[0061] It is worth noting that a pump may be further provided in the second refrigeration circuit 120 so that the refrigerant circulates under the power of the pump, which can alleviate the influence of the spatial layout on the second refrigeration circuit 120. That is, in the case of setting a pump circulation, the height of the second condenser 122 in the vertical direction may not be greater than the installation height of the second evaporator 121 in the vertical direction.

[0062] In summary, the composite heat exchange device 100 provided in this embodiment adopts a combination of a compression refrigeration unit and a heat pipe refrigeration unit, which improves the overall refrigeration effect; and, in the entire cycle, no water is required, thereby reducing the impact of water on communication electronic equipment, avoiding damage to electronic equipment caused by water leakage (refrigerant leakage directly vaporizes), improving applicability, and facilitating application in a variety of different scenarios. At the same time, since the installation height of the condenser in each refrigeration unit is greater than the installation height of the evaporator, the refrigerant therein can flow under the action of gravity, thereby improving the circulation efficiency.

[0063] In an alternative embodiment, the second refrigeration circuit 120 may use a compression refrigeration unit, while the first refrigeration circuit 110 may use a heat pipe refrigeration unit; or both the first refrigeration circuit 110 and the second refrigeration circuit 120 may use a compression refrigeration unit or a heat pipe refrigeration unit. It is sufficient as long as it can meet the requirements of high-efficiency refrigeration.

[0064] like Figure 4 As shown, further, based on the fact that the first refrigeration circuit 110 adopts a compression refrigeration unit and the second refrigeration circuit 120 adopts a heat pipe refrigeration unit, the first evaporator 111 can adopt a fluorine heat exchanger. At this time, the fluorine heat exchanger includes a first heat exchange channel 1111 and a second heat exchange channel 1112, the first heat exchange channel 1111 and the second heat exchange channel 1112 are independent of each other and not connected, the two ends of the first heat exchange channel 1111 are connected to the inlet and outlet of the first condenser 112 to define the first refrigeration circuit 110, and the two ends of the second heat exchange channel 1112 are connected to the second evaporator 121 to define the third refrigeration circuit 140. At this time, the second refrigeration circuit 120 and the third refrigeration circuit 140 can be selected to cooperate with the first refrigeration circuit 110, while ensuring the refrigeration effect, reducing energy consumption. Of course, the first refrigeration circuit 110 and the second refrigeration circuit 120 can also be used selectively.

[0065] In actual use, the first installation space 101 and the second installation space 102 are respectively provided with temperature sensors, so as to adjust the working state of the second refrigeration circuit 120 and the third refrigeration circuit 140 according to the temperature difference between the first installation space 101 and the second installation space 102. In order to facilitate the adjustment, a first control valve 125 is provided on the first delivery pipe 116, and a connecting pipe 190 is provided between the second delivery pipe 124 and the second heat exchange channel 1112, and a second control valve 191 is provided on the connecting pipe 190. The first control valve 125 is used to adjust the opening and closing of the second delivery pipe 124, and the second control valve 191 is used to adjust the opening and closing of the connecting pipe 190, and the first control valve 125 and the second control valve 191 are both configured to adjust the opening and closing in response to the detection signal of the temperature sensor. Among them, the first installation space 101 corresponds to the first temperature sensor, and the second installation space 102 corresponds to the second temperature sensor.

[0066] When the detection signal of the first temperature sensor is less than the detection signal of the second temperature sensor, and the detection signal of the second temperature sensor is lower than the first preset temperature, it means that the temperature in the first installation space 101 is lower than the temperature of the second installation space 102, which is equivalent to that the temperature of the second installation space 102 is higher and not enough to cause the second condenser 122 (heat pipe heat exchanger) to perform condensation. At this time, the compressor 113 is in operation, that is, the first refrigeration circuit 110 is in operation. At the same time, the first control valve 125 is in a closed state so that the outlet of the second evaporator 121 is not connected to the inlet of the second condenser 122, that is, the second refrigeration circuit 120 is not working; and the second control valve 191 is in an open state so that the third refrigeration circuit 140 is connected, that is: the second evaporator 121 is connected to the second heat exchange channel 1112 in the fluorine heat exchanger. The first heat exchange channel 1111 and the second heat exchange channel 1112 can exchange heat with each other, so the refrigerant in the second evaporator 121 can flow to the second heat exchange channel 1112 along the connecting pipe 190 after absorbing heat, exchange heat with the first heat exchange channel 1111 and cool down, and enter the second evaporator 121 for circulating refrigeration; at the same time, the refrigerant in the first heat exchange channel 1111 can flow to the first condenser 112 through the compressor 113 after absorbing heat, and then flow to the first heat exchange channel 1111 for another refrigeration cycle. In this way, sufficient cooling capacity can be ensured.

[0067] Further, when the detection signal of the first temperature sensor is less than the detection signal of the second temperature sensor, and the detection signal of the second temperature sensor is higher than or equal to the first preset temperature, it means that the temperature in the second installation space 102 is in a very high state, such as in the summer state. At this time, the power of the compressor 113 can be increased to improve the refrigeration effect of the first refrigeration circuit 110. It is worth noting that when the detection signal of the second temperature sensor is lower than the first preset temperature, it can be a spring and autumn state. Among them, the first preset temperature can be 20°C, 23°C or 25°C. In addition, the cooling capacity is also related to the temperature inside the heating terminal 200. When the temperature of the heating terminal 200 is higher than or equal to the second preset temperature, it is also necessary to adjust the power of the compressor 113 to increase the cooling capacity; and when it is lower than the second preset temperature, the power of the compressor 113 can be reduced accordingly. Among them, the second preset temperature can also be 23°C, 25°C or 30°C.

[0068] When the detection signal of the first temperature sensor is greater than or equal to the detection signal of the second temperature sensor, it means that the temperature in the first installation space 101 is higher than or equal to the temperature of the second installation space 102, which is equivalent to the temperature of the second installation space 102 being low enough to meet the condensation work of the second condenser 122, for example, in winter. At this time, the compressor 113 may not be running, and the first control valve 125 is in an open state, and the second control valve 191 is in a closed state, so that the second refrigeration circuit 120 is connected and the third refrigeration circuit 140 is disconnected. At this time, the heat pipe refrigeration unit can meet the cooling capacity requirements.

[0069] In summary, the temperature of the second installation space 102 can be used as the external environment temperature. When the external environment temperature is high, a compression refrigeration unit is required, such as the use of the first refrigeration circuit 110 alone, or the combination of the first refrigeration circuit 110 and the third refrigeration circuit 140; when the external environment temperature is low, a heat pipe refrigeration unit can be used, that is, the second refrigeration circuit 120 is used for refrigeration. For example, when the external environment temperature is below 10 degrees, a heat pipe heat exchange unit is used, and when it is higher than 10 degrees, a compression refrigeration unit is turned on.

[0070] See also Figures 1 to 4 In an optional embodiment, the second condenser 122 in the second refrigeration circuit 120 may be composed of two groups of heat pipe heat exchangers. At this time, two branch pipes are connected to one end of the second delivery pipe 124 and the second delivery pipe 123 facing the second condenser 122, and each branch pipe is respectively connected to the inlet and outlet of the two groups of heat pipe heat exchangers. Such a setting ensures that the second condenser 122 has sufficient condensation capacity to provide it to the second evaporator 121 for heat absorption and refrigeration, thereby improving the refrigeration efficiency.

[0071] Furthermore, the number of the first condensers 112 in the first refrigeration circuit 110 is also two groups to ensure the condensation effect. At this time, the connection between the first delivery pipe 116 and the first delivery pipe 115 and the first condenser 112 is similar to the above, so it is not repeated. Among them, the two groups of heat pipe heat exchangers and the two groups of first condensers 112 are arranged symmetrically in a "V" shape, and are stacked along the direction of the symmetry axis, which is conducive to a compact structure. It is worth noting that this is only an example for illustration. As other embodiments, the number and arrangement of the heat pipe heat exchanger and the second condenser 122 can be selected according to actual conditions.

[0072] Furthermore, two groups of heat pipe heat exchangers are installed outside the two groups of first condensers 112 to ensure that each group of heat pipe heat exchangers can fully contact with the outside air, reduce obstacles, and ensure the cooling capacity of the heat pipe refrigeration unit.

[0073] See also Figures 1 to 4As some embodiments, the composite heat exchange device 100 also includes a humidifying structure 160 installed in the second installation space 102. The humidifying structure 160 is arranged close to the condenser to humidify the condenser, reduce the temperature around the condenser, and ensure a better condensation effect; and the working medium such as water mist sprayed by the humidifying structure 160 can adhere to the surface of the condenser, take away the heat released by the condenser during condensation, and further improve the condensation effect. Specifically, the humidifying structure 160 can be installed on the side of the condenser away from the first installation space 101, and use the setting of the water pump 161 to supply water. Among them, the humidifying structure 160 adopts a wet film humidifier. It is worth noting that the specific structure of the wet film humidifier is an existing mature technology and does not belong to the invention point of this application, so it will not be repeated here.

[0074] In actual use, a humidity sensor may be installed in the second installation space 102 to detect the ambient humidity in the second installation space 102. When the ambient humidity meets the preset humidity, the humidification structure 160 is in a closed state; when the ambient humidity is less than the preset humidity, the humidification structure 160 is in an open state to humidify and cool the condenser. In addition, since humidity is also related to temperature and rain, when the temperature is high and there is no rain, the corresponding humidity is low, and the humidification structure 160 can be turned on.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A composite heat exchange device, characterized in that: The composite heat exchange device (100) comprises a first refrigeration circuit (110), a second refrigeration circuit (120) and a mounting base (130); The first refrigeration circuit (110) and the second refrigeration circuit (120) both include a condenser and an evaporator that can be connected to each other; the mounting base (130) is configured with a first mounting space (101) and a return air port (104) and an air supply port (103) that are connected to the first mounting space (101); the return air port (104) and the air supply port (103) are arranged at intervals; the air supply port (103) is used to connect to an air inlet (201) of a heating terminal (200), and the return air port (104) is used to connect to an air outlet (202) of the heating terminal (200); The installation base (130) is also configured with a second installation space (102) separated from the first installation space (101), the second installation space (102) being in communication with the external environment, the evaporator being installed in the first installation space (101), and the condenser being installed in the second installation space (102).

2. The composite heat exchange device according to claim 1, characterized in that: The first refrigeration circuit (110) and the second refrigeration circuit (120) are not connected to each other.

3. The composite heat exchange device according to claim 1, characterized in that: Along the vertical direction of the composite heat exchange device (100), the air supply port (103) is located below the air return port (104).

4. The composite heat exchange device according to claim 3, characterized in that: The air supply port (103) and the air return port (104) are both arranged on a side wall of the first installation space (101) facing away from the second installation space (102).

5. The composite heat exchange device according to claim 4, characterized in that: The diameter of the air supply port (103) is greater than the diameter of the air return port (104); the composite heat exchange device (100) further comprises a first air duct (151); The air supply port (103) and the air return port (104) are both installed with the first air duct (151); the first air duct (151) installed at the air supply port (103) is used to connect to the air inlet (201) of the heating terminal (200); and the first air duct (151) installed at the air return port (104) is used to connect to the air outlet (202) of the heating terminal (200).

6. The composite heat exchange device according to claim 3, characterized in that: The return air port (104) is arranged on a side wall of the first installation space (101) away from the second installation space (102), and the supply air port (103) is arranged at the bottom of the first installation space (101); The composite heat exchange device (100) further comprises a second air duct (152), one end of the second air duct (152) being connected to the return air port (104), and the other end of the second air duct (152) being used to connect to the air outlet (202) of the heating terminal (200).

7. The composite heat exchange device according to claim 1, characterized in that: The mounting base (130) comprises a mounting substrate and an assembly box connected to the mounting substrate, the assembly box is provided with the first mounting space (101) around it, and a portion located on the outer periphery of the assembly box and away from the air supply port (103) and the air outlet (202) is defined as the second mounting space (102); or The mounting base (130) comprises a mounting substrate and a mounting partition connected to the mounting substrate, wherein the mounting partition is arranged at an angle to the mounting substrate, and the first mounting space (101) is located on one side of the mounting partition in the thickness direction, and the second mounting space (102) is located on the other side.

8. The composite heat exchange device according to claim 1, characterized in that: The first refrigeration circuit (110) corresponds to a first condenser (112) and a first evaporator (111); The first refrigeration circuit (110) further comprises a compressor (113) and an expansion element (114), wherein the compressor (113) is connected between an inlet of the first condenser (112) and an outlet of the first evaporator (111), and the expansion element (114) is connected between the outlet of the first condenser (112) and an inlet of the first evaporator (111); The second refrigeration circuit (120) corresponds to a second condenser (122) and a second evaporator (121); The second condenser (122) and the second evaporator (121) both adopt heat pipe heat exchangers, and along the vertical direction of the composite heat exchange device (100), the installation height of the second condenser (122) is greater than the installation height of the second evaporator (121).

9. The composite heat exchange device according to claim 8, characterized in that: The first evaporator (111) adopts a fluorine heat exchanger; The fluorine heat exchanger comprises a first heat exchange channel (1111) and a second heat exchange channel (1112), wherein both ends of the first heat exchange channel (1111) are connected to the first condenser (112) to define the first refrigeration circuit (110), and both ends of the second heat exchange channel (1112) are connected to the second evaporator (121) to define a third refrigeration circuit (140).

10. The composite heat exchange device according to claim 9, characterized in that: The second refrigeration circuit (120) further comprises a second inlet pipe (123) and a second outlet pipe (124), wherein the second inlet pipe (123) is connected between the outlet of the second condenser (122) and the inlet of the second evaporator (121), and the second outlet pipe (124) is connected between the outlet of the second evaporator (121) and the inlet of the second condenser (122); A first control valve (125) is provided on the second delivery pipe (124), and a connecting pipe (190) is connected between the second delivery pipe (124) and the second heat exchange channel (1112), a second control valve (191) is provided on the connecting pipe (190), and the other end of the second heat exchange channel (1112) is connected to the second evaporator (121); The first control valve (125) is used to regulate the on-off of the second delivery pipe (124), and the second control valve (191) is used to regulate the on-off of the connecting pipeline (190).

11. The composite heat exchange device according to claim 10, characterized in that: Temperature sensors are respectively arranged in the first installation space (101) and the second installation space (102), and the first control valve (125) and the second control valve (191) are both configured to adjust opening and closing in response to detection signals of the temperature sensors.

12. The composite heat exchange device according to claim 11, characterized in that: The first installation space (101) corresponds to a first temperature sensor, and the second installation space (102) corresponds to a second temperature sensor; When the detection signal of the first temperature sensor is less than the detection signal of the second temperature sensor, the compressor (113) is in operation, the first control valve (125) is configured to be in a closed state, the second control valve (191) is configured to be in an open state, the third refrigeration circuit (140) is connected to the first refrigeration circuit (110), and the first heat exchange channel (1111) is used to perform heat exchange on the second heat exchange channel (1112); When the detection signal of the first temperature sensor is greater than or equal to the detection signal of the second temperature sensor, the compressor (113) is in a closed state, the first control valve (125) is configured to be in an open state, the second control valve (191) is configured to be in a closed state, the third refrigeration circuit (140) is disconnected, and the second refrigeration circuit (120) is connected.

13. The composite heat exchange device according to claim 1, characterized in that: The composite heat exchange device (100) further comprises a humidifying structure (160) installed in the second installation space (102), wherein the humidifying structure (160) is installed close to the condenser, and the humidifying structure (160) is used to humidify the condenser.

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