Energy-saving cooling device for base station tower equipment cabinet

Abstract

The utility model relates to an energy-saving cooling device for a base station tower equipment cabinet, which comprises an outer wrapping body, at least two channels are arranged in the outer wrapping body, the channels are mutually independent, one channel is used for leading external air flow into the cabinet through a first air supply outlet, and the other channel is used for leading external air flow into the cabinet through a second air supply outlet. And the other channel is used for directionally sending airflow in the cabinet into the cabinet through the second air supply outlet. By controlling the flowing speed and direction of the airflow, the layered, one-way and ordered flowing process of the airflow is formed in the cabinet, heat energy is converted into kinetic energy, the cooling mode with ventilation cooling as a main mode and refrigeration cooling as an auxiliary mode is achieved, and the cabinet is safe, efficient, energy-saving and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment cabinet cooling, in particular to an energy-saving cooling device for a base station tower equipment cabinet. Background Technique

[0002] The outdoor iron tower communication base station ground cabinet is composed of a power cabinet and a communication cabinet. Taking the heat generation of a general power cabinet as 1200W and the heat generation of a communication cabinet as 700W as an example, in the prior art, a cabinet air conditioner is installed on the side of the cabinet body, and the cooling is completely carried out by mechanical heat exchange; in addition, to solve the adverse effects of high temperature or direct sunlight in summer and reduce the influence of the climate in extreme high temperature periods on the temperature rise in the cabinet, heat insulation and thermal insulation layers are provided on the power cabinet and the communication cabinet bodies. The setting of the heat insulation and thermal insulation layer brings another problem to the cabinet body. When the outside of the cabinet is in a low temperature period, the high temperature inside the cabinet cannot dissipate heat through the surface of the cabinet body, but the heat needs to be completely mechanically exchanged and discharged by the air conditioner, and the natural cold sources such as the day-night temperature difference and the seasonal temperature difference outdoors cannot be effectively utilized to cool and dissipate heat inside the cabinet, resulting in the air conditioner compressor needing to be in continuous operation for most of the year; according to statistics, the power cabinet needs to be cooled for 260-360 days per year, and the communication cabinet needs to be cooled for 220 days per year.

[0003] Once the cabinet air conditioner fails to stop refrigerating during high temperature periods, the temperature inside the cabinet accumulates to a high temperature, causing the electrical equipment and communication equipment inside the cabinet to be damaged and stop working due to high temperature, which is very fatal to the electrical equipment and communication equipment, and this problem has not been solved so far.

[0004] 60% of the operating cost of the base station tower is electricity cost, and the energy consumption for cooling accounts for a relatively high proportion.

[0005] In addition, the long-term operation of the air conditioner compressor will shorten its service life and increase the maintenance and repair costs; due to the wide distribution range of communication tower stations, this is more obvious in mountainous areas, remote areas and other areas with poor road conditions. Content of the Utility Model

[0006] The applicant provides an energy-saving cooling device for a base station tower equipment cabinet with a reasonable structure, which forms an internal circulation by the external fan blowing air into the cabinet and the internal fan working at the same time, and is supplemented by the refrigeration of the evaporator to realize directional or even fixed-point air supply, and can effectively control the speed and direction of the air flow, forming a thermal stratification, unidirectional controllable, orderly convection and target cooling of the air flow inside the cabinet, realizing a cooling mode mainly based on ventilation cooling and supplemented by refrigeration cooling, and having the function of switching to the air supply mode when the compressor fails and still maintaining the normal operation of the equipment inside the cabinet. It is safe, efficient, reliable, energy-saving and environment-friendly. The service life of the device of the invention is more than doubled compared with that of the cabinet air conditioner, and compared with the existing cabinet air conditioner cooling technology, the energy consumption can be reduced by more than 85%.

[0007] The technical solution adopted by the present utility model is as follows:

[0008] An energy-saving and cooling device for a base station tower equipment cabinet, comprising an outer package. At least two channels are arranged inside the outer package, and each channel is independent of each other. One channel is used to introduce external air flow into the cabinet through a first air supply port, and the other channel is used to direct the air flow inside the cabinet to be sent into the cabinet through a second air supply port.

[0009] As a further improvement of the above technical solution:

[0010] It further includes a power device for transporting gas.

[0011] The power device includes an outer fan and an inner fan.

[0012] The outer fan is installed in the channel for introducing external air flow into the cabinet through the first air supply port, and the inner fan is installed in the channel for directing the air flow inside the cabinet to be sent into the cabinet through the second air supply port.

[0013] It further includes a refrigeration module, and the refrigeration module includes an evaporator, a condenser and a compressor.

[0014] A valve plate is installed at the channel for introducing external air flow into the cabinet through the first air supply port through an adjusting power mechanism. The valve plate is driven by the adjusting power mechanism to swing, and the air volume entering the cabinet and entering the condenser is adjusted by the swing amplitude of the valve plate.

[0015] Condenser air discharge ports corresponding to the condenser, compressor air inlet holes corresponding to the compressor, compressor ventilation and heat discharge ports corresponding to the compressor, and drain holes for external drainage are respectively opened on the wall surface of the outer package.

[0016] The outer package is installed on the wall surface of the cabinet body, and the cabinet body is a power supply cabinet or a communication cabinet.

[0017] The top and / or side of the cabinet body is provided with a total air discharge port.

[0018] Second guide vanes are arranged above the total air discharge port inside the cabinet body.

[0019] The beneficial effects of the present utility model are as follows:

[0020] The structure of the utility model is compact and reasonable. After the external fan introduces the air outside the cabinet into the cabinet, part of the air flow forms an internal circulation by the operation of the internal fan, and cooperates with the evaporator to realize directional or even fixed-point air supply. Moreover, it can effectively control the speed and direction of the air flow, forming stratified, vector air supply, unidirectional controllable, target cooling, and orderly flowing heat discharge of the air flow in the cabinet. This method can greatly improve the heat dissipation and heat removal efficiency and reduce the refrigeration ventilation volume, realizing a cooling mode mainly based on ventilation cooling and supplemented by refrigeration cooling. While achieving low-energy consumption cooling, it greatly reduces the continuous use time of the refrigeration equipment, is safe, efficient, energy-saving and environment-friendly, and effectively guarantees and extends the service life of the refrigeration equipment. More importantly, it solves the problem that the equipment in the cabinet can still operate normally when the compressor fails and stops refrigerating.

[0021] The utility model also has the following advantages:

[0022] The utility model can effectively utilize the temperature difference between day and night and the seasonal temperature change. Especially in the low-temperature period, only by means of ventilation cooling, after introducing the external low-temperature air flow into the cabinet, the air flow in the cabinet is used for cooling through directional, stratified and orderly flow. While in the high-temperature period, the cabinet is cooled by a combination of mainly ventilation and supplemented by refrigeration, changing the existing way of relying on complete mechanical heat exchange for cooling;

[0023] In the utility model, based on the operation of the internal fan, part of the air flow introduced into the cabinet by the operation of the external fan is subjected to an independent internal circulation. Through the internal circulation, vector fixed-point air supply is realized, and targeted target cooling is achieved by the air flow of the internal circulation; moreover, the air flows of the internal circulation each show a horizontal and upward flow trend in the cabinet, making the air flow in the cabinet unidirectionally controllable, with good cooling effect, especially suitable for directional air supply target cooling of the rectifier module in the power cabinet and stratified cooling and heat discharge of the communication cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the state when the utility model is used in a power cabinet.

[0025] Figure 2 It is a schematic diagram of the state when the utility model is used in a communication cabinet.

[0026] Figure 3 It is a cross-section of the utility model Figure 1 。

[0027] Figure 4 It is a rear view of the utility model.

[0028] Figure 5 It is a bottom view of the utility model.

[0029] Figure 6 It is a cross-section of the utility model Figure 2 。

[0030] Among them: 1. Outer body; 2. External fan; 3. Valve plate; 4. External sensor; 5. Internal fan; 6. Evaporator; 7. Cabinet;

[0031] 11. Main air inlet; 12. Partition; 13. Air filter; 14. Plate;

[0032] 21. Main air duct; 22. First guide vane;

[0033] 31. Adjust the power mechanism;

[0034] 41. Controller; 42. Internal sensor;

[0035] 61. Internal air duct; 62. Condenser; 63. Condenser exhaust port; 64. Drain hole; 65. Compressor air inlet hole;

[0036] 71. upper air outlet; 72. side air outlet; 73. second guide vane; 74. cabinet door;

[0037] 81. Rectifier module; 82. Cooling fan; 83. Directional air guide cover; 84. Battery module;

[0038] 91. Communication machine. DETAILED DESCRIPTION

[0039] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0040] like Figures 1 - 6 As shown, the energy-saving and cooling device for the equipment cabinet of the base station tower of this embodiment includes an outer body 1, and at least two channels are arranged inside the outer body 1, and each channel is independent of each other, wherein one channel is used to introduce the external airflow into the cabinet through the first air supply port, and the other channel is used to send the airflow in the cabinet to the cabinet through the second air supply port. The channel for introducing the external airflow into the cabinet through the first air supply port is the main air duct 21, and the first air supply port is the air supply port of the main air duct 21; the channel for sending the airflow in the cabinet to the cabinet through the second air supply port is the inner air duct 61, and the second air supply port is the air supply port of the inner air duct 61.

[0041] The first air outlet is provided with a first guide vane 22 .

[0042] It also includes power equipment for conveying gas, which is used to drive the gas to flow in a directional manner to form an airflow.

[0043] The power equipment includes an external fan 2 and an internal fan 5 .

[0044] The external blower 2 is installed in the channel that introduces external air flow into the cabinet through the first air supply opening, and the internal blower 5 is installed in the channel that directionally sends the air flow inside the cabinet out of the cabinet through the second air supply opening. That is, the external blower 2 is installed in the main air duct 21, and the internal blower 5 is installed in the internal air duct 61. The blower is usually arranged at the end of the corresponding channel.

[0045] After the external blower 2 introduces the air outside the cabinet into the cabinet, under the action of the internal blower 5, part of the air flow realizes directional or even fixed-point air supply through the second air supply opening, and can effectively control the speed and direction of the air flow, forming stratified, unidirectional controllable, target cooling, and orderly flowing heat dissipation of the air flow in the cabinet; that is:

[0046] In this embodiment, based on the operation of the internal blower 5, part of the air flow introduced into the cabinet by the operation of the external blower 2 is independently flowed, realizes vector fixed-point air supply through the second air supply opening, and realizes targeted target cooling by this part of the air flow; and, this part of the air flow shows a horizontal and upward flow trend in the cabinet respectively, making the air flow in the cabinet unidirectionally controllable, with good cooling effect, especially suitable for directional air supply target cooling of the rectifier module 81 in the power cabinet and stratified cooling and heat dissipation of the communication cabinet; another part of the air flow directly flows horizontally and upward in the cabinet, thereby forming stratified and orderly flow in the cabinet.

[0047] It also includes a refrigeration module, and the refrigeration module includes an evaporator 6, a condenser 62 and a compressor. The evaporator 6 is installed at the second air supply opening.

[0048] At the channel (i.e., the main air duct 21) for introducing external air flow into the cabinet through the first air supply opening, a valve plate 3 is installed through the adjustment power mechanism 31. The valve plate 3 is driven by the adjustment power mechanism 31 to swing, and the air volume entering the cabinet and entering the condenser 62 is adjusted by the swing amplitude of the valve plate 3.

[0049] In this embodiment, after the external blower 2 introduces the air outside the cabinet into the cabinet through the main air duct 21, part of the air flow is subjected to fixed-point air supply under the action of the internal blower 5. At this time, when the evaporator 6 operates for refrigeration, this part of the air flow is converted into cold air.

[0050] In this embodiment, the evaporator 6 and other refrigeration components used in supporting it, such as the condenser 62, the compressor, etc., can be orderly placed in the outer package 1. On the one hand, it realizes the reasonable utilization of the internal space of the outer package 1, making the overall structure of the cooling device compact. On the other hand, it is also convenient to synchronously adjust the air volume entering the cabinet (through the main air duct 21) and entering the condenser 62 by the swing of the valve plate 3 under the refrigeration condition.

[0051] In this embodiment, by adjusting the operation of the power adjustment mechanism 31, the attitude of the valve plate 3 is adjusted, so that the proportion of the air volume flowing into the cabinet and into the condenser 62 can be adjusted, effectively helping to achieve adjustable and controllable cooling efficiency and cooling effect. Moreover, in combination with the adjustment of the rotation speed of the external fan 2, the total air volume it inhales can be adjusted.

[0052] The valve plate 3 in this embodiment can be rotatably installed relative to the wall surface of the main air duct 21 via a rotating structure such as a hinge, and then the attitude of the valve plate 3 is adjusted by pushing or pulling of the power adjustment mechanism 31. Of course, for the power adjustment mechanism 31, it can be any structural form in the prior art that can achieve the swing of the valve plate 3, such as a cylinder hinged at both ends, or a motor cooperating with a link mechanism, etc.

[0053] Similar to the refrigeration equipment in the prior art, the refrigeration equipment includes a compressor, a condenser 62 and an evaporator 6, which are interconnected via pipelines to form a circulating refrigeration path, and the refrigerant flows in the circulating refrigeration path. Specifically: The refrigerant with low temperature and low pressure and a boiling point lower than normal temperature absorbs heat and evaporates into a gas in the evaporator 6, so that the air flow in the cabinet flowing through the evaporator 6 is converted into cold air. The gaseous refrigerant enters the compressor and is compressed into a high-pressure and high-temperature gaseous refrigerant. The high-pressure and high-temperature gaseous refrigerant is sent into the condenser 62, dissipates heat to the outside and becomes a liquid refrigerant, and then the expansion valve converts the liquid refrigerant into a low-temperature and low-pressure state. The refrigerant returns to the evaporator 6 again, realizing the circulating flow of the refrigerant and the refrigeration work of the refrigeration equipment.

[0054] Condenser air discharge ports 63 corresponding to the condenser 62, compressor air intake holes 65 corresponding to the compressor, compressor ventilation and heat discharge ports corresponding to the compressor, and drain holes 64 for external drainage are respectively opened on the wall surface of the outer package 1. As Figure 6 shown, the compressor air intake holes 65, the condenser air discharge ports 63, and the drain holes 64 can be arranged on the bottom wall surface of the outer package 1; they can also be arranged on other wall surfaces of the outer package 1, and can be adjusted accordingly according to the layout position of the corresponding equipment inside the outer package 1.

[0055] A main air intake 11 of the main air duct 21 is provided at the outer end of the outer package 1. An air filter 13 is installed at the main air intake 11, and an external sensor 4 is also installed at the main air intake 11. In this embodiment, the air filter 13 adopts a filter with a primary and medium-effect composite structure, and the layered filtration can extend the service time.

[0056] In this embodiment, the main air intake 11 can correspond to the entire outer side surface at the outer end of the outer package 1, and the outer package 1 is equipped with a perforated plate to form the main air intake 11.

[0057] The inner end of the outer package 1 facing the inside of the cabinet is detachably installed with a plate 14, and a controller 41 and an internal sensor 42 are installed on the plate 14.

[0058] In this embodiment, the internal sensor 42 and the external sensor 4 are both electrically connected to the controller 41. The controller 41 controls the cooling mode and the air supply volume according to the temperature information of the sensors.

[0059] The external sensor 4 is used to detect the temperature outside the cabinet in real time, and in combination with the temperature information of the internal sensor 42, it adjusts the cooling working mode and regulates the air supply conditions of the external fan 2, the internal fan 5, etc.

[0060] In this embodiment, a partition 12 is installed inside the outer package 1, and the main air duct 21 and the inner air duct 61 are isolated by setting the partition 12.

[0061] As Figure 2 shown, an air inlet for the inner air duct 61 (for the internal fan 5 to intake air) and an upper air outlet for the evaporator 6 to discharge air can be correspondingly opened on the plate 14.

[0062] The utility model is applicable to various different climate environment regions, and adopts an energy-saving and consumption-reducing method of temperature negative feedback fan temperature control speed regulation, fan multi-speed variable speed, and temperature control constant speed intermittent air supply, supplemented by refrigeration and ventilation for cooling.

[0063] The utility model can effectively utilize the temperature difference between day and night and the temperature difference of seasonal changes. Especially in the low-temperature period, only by means of ventilation and cooling, the external low-temperature air flow is introduced into the cabinet, and then the air flow in the cabinet is used for cooling through directional, stratified, and orderly flow. While in the high-temperature period, the cabinet is cooled by a combination of ventilation and refrigeration, changing the existing way of relying on complete mechanical heat exchange for cooling.

[0064] Due to the directional and stratified cooling structure and cooling mode in the cabinet of the utility model, it can be targeted and matched according to different equipment, different heat generation points, and heat dissipation requirements in the cabinet, so as to meet different cabinet cooling requirements, with high flexibility in use and outstanding cooling effect.

[0065] The outer package 1 is installed on the wall surface of the cabinet 7, and the cabinet 7 is a power cabinet or a communication cabinet. The inside of the cabinet referred to in the utility model is the inside of the cabinet 7, and the above-mentioned cooling device is installed on the cabinet 7. The cabinet 7 includes a cabinet door 74, and the cooling device can be installed on the cabinet door 74.

[0066] The side and / or top surface of the cabinet 7 is provided with a main exhaust port, that is, an upper exhaust port 71 opened on the top wall surface of the cabinet 7 and a side exhaust port 72 opened above the side wall surface of the cabinet 7. The side exhaust port 72 can be arranged on the cabinet door 74 and can be selected according to the cabinet structure.

[0067] Above the general exhaust air outlet inside the cabinet body 7, a second deflector 73 is arranged. The second deflector 73 can be arranged on the inner side of the cabinet door 74 between the cooling device and the general exhaust air outlet, or the second deflector 73 can also be arranged on the equipment inside the cabinet.

[0068] In this embodiment, the second deflector 73 is provided to inhibit the downward entrainment of the hot air flow in the upper part of the cabinet and reduce the cooling effect inside the cabinet, and effectively isolate the hot air flow to be exhausted outside above and the cold air flow below through the second deflector 73.

[0069] In this embodiment, the general exhaust air outlet can be arranged on the top surface of the cabinet body 7 (i.e., the upper exhaust air outlet 71), which is convenient for the air flow inside the cabinet to be discharged outwards from the upper part of the cabinet body 7 and can accelerate the outward discharge of the thermal buoyancy air flow.

[0070] The general exhaust air outlet can also be arranged on the side cabinet door 74 (i.e., the side exhaust air outlet 72), taking into account the influence of external rainwater and other factors. Of course, other external structures can also be configured on the upper exhaust air outlet 71 to prevent the influence of rainwater and other factors.

[0071] As Figure 1 shown, in the power cabinet of this embodiment, a rectification module 81 is placed inside the cabinet body 7; the first air supply outlet of the cooling device faces the middle of the rectification module 81, the evaporator 6 is located above the internal blower 5, and the upper air outlet of the evaporator 6 is horizontally and directly opposite to the rectification module 81; a cooling small blower 82 is installed at the air inlet of the rectification module 81 for air supply, and / or a directional air guide cover 83 with an adjustable orientation towards the rectification module 81 is installed at the upper air outlet of the evaporator 6.

[0072] In the power cabinet of this embodiment, the upper air outlet of the evaporator 6 is directly opposite to the rectification module 81, so that the air sent out by the evaporator 6 can be used to achieve targeted cooling of the rectification module 81 in a directional manner, effectively ensuring rapid, efficient, and reliable cooling of the rectification module 81 with a large amount of heat generation, and preventing the upper part / top of the power cabinet from being affected by the overheating of the rectification module 81 and affecting the normal use of the battery module 84 below;

[0073] At the same time, the first air supply outlet is arranged below the rectification module 81, so that the air flow inside the cabinet outside the internal circulation can directly flow horizontally and upward below the rectification module 81. On the one hand, it can be cooled independently through the flow, and on the other hand, it can also form an upward pushing effect on the thermal buoyancy air flow generated by the internal circulation above.

[0074] In this embodiment, the setting of the cooling small blower 82 or the directional air guide cover 83 effectively ensures that the air sent out by the evaporator 6 can efficiently flow into the rectification module 81, and effectively ensures the cooling efficiency and cooling effect of the cold air at the lowest temperature entering the rectification module 81.

[0075] As Figure 2As shown in the figure, in the communication cabinet of this embodiment, multiple communication machines 91 are placed at intervals from bottom to top in the cabinet body 7; the cooling device is installed in the upper middle part / top of the cabinet door 74 of the communication cabinet, and first air supply ports are respectively opened on the side and bottom of the outer package body 1 located inside the cabinet body 7, so that the air flow flowing into the cabinet from the main air duct 21 presents different downward and horizontal forms, thereby realizing synchronous stratified cooling of the communication machines 91 in the entire communication cabinet through the flow of the air flow; the evaporator 6 in the cooling device is arranged below the internal blower 5.

[0076] In actual use, due to the differences in the internal equipment and heat generation structures of the power cabinet and the communication cabinet, the cooling device is adaptively adjusted according to the different cooling requirements of the cabinet bodies to be applicable to the cooling of cabinet bodies with different usage requirements.

[0077] The working process of the present utility model is as follows:

[0078] When the present utility model works, it includes a ventilation cooling mode and a combined ventilation and refrigeration cooling mode. By switching between the modes, the temperature inside the cabinet body is effectively guaranteed to be within the preset range;

[0079] In the ventilation cooling mode:

[0080] When the temperature inside the cabinet reaches the ventilation cooling set value, the external blower 2 works. The external blower 2 introduces the air outside the cabinet into the cabinet through the main air duct 21 and forms two air flows inside the cabinet;

[0081] The first air flow blows towards the cooling object inside the cabinet through the internal blower 5 and the second air supply port; in a preferred embodiment, the internal blower 5 can work simultaneously with the external blower 2;

[0082] The second air flow pushes upwards and converges with the first air flow after heat exchange. Under the combined action of the two air flows, the hot air flow is discharged outside the cabinet, and the two air flows are discharged through the corresponding air outlets outside the cabinet (corresponding to the upper exhaust port 71 and / or the side exhaust port 72);

[0083] The combined action of the two air flows makes the hot buoyant air flow inside the cabinet flow unidirectionally, controllably and orderly towards the air outlets outside the cabinet (corresponding to the upper exhaust port 71 and / or the side exhaust port 72) for heat discharge;

[0084] When the temperature inside the cabinet is below the ventilation cooling set value, it means that the cabinet does not need to be cooled, and at this time the cooling device does not need to work.

[0085] For the power cabinet, as Figure 1 shown, the air flow sent out from the second air supply port is directly facing the rectifier module 81. Under the action of the cooling small blower 82 working or in combination with the directional air guide cover 83, the air flow sent out from the second air supply port flows directionally and enters the air intake of the cooling blower 82 arranged in the rectifier module 81 for directional flow, realizing targeted cooling at the rectifier module 81.

[0086] For a communication cabinet, as Figure 2 shown, the air flow sent out from the second air supply opening horizontally flows through the interlayer space of the communication machine 91 and finally flows upward and is discharged outside through the main exhaust opening.

[0087] The combined cooling mode of ventilation and refrigeration is mainly a combined mode with ventilation as the main and refrigeration as the auxiliary:

[0088] During the process of ventilation and cooling, if the temperature inside the cabinet exceeds the refrigeration set value, auxiliary refrigeration will start; the regulating power mechanism 31 pushes the valve plate 3, and through the diversion of the valve plate 3, the working external fan 2 simultaneously sends air to the main air duct 21 and the condenser 62; the air flow flowing into the cabinet through the main air duct 21 is divided into two streams. One stream of air is blown out as cold air after being refrigerated by the evaporator 6 under the action of the internal fan 5, and the other stream of air located below the cold air directly fills the low-temperature negative pressure area at the lower part of the hot air flow inside the cabinet, boosting the hot air flow to flow upward in the cabinet. Cooling is carried out by the combined action of outdoor fresh air and refrigeration. Under this auxiliary refrigeration state, condensate water will not be generated under normal circumstances. The advantage is that it avoids the cooling capacity being carried away by condensate water and reduces the cooling efficiency; if condensate water is generated, a water pipe can be set to lead the condensate water to the upper part of the air inlet of the condenser 62 / inside the top air duct. This method is beneficial to improving the heat exchange efficiency of the condenser 62.

[0089] For a power cabinet, when the evaporator 6 is working, the cold air sent out by the evaporator 6 and flowing into the rectifier module 81 can effectively cool the rectifier module 81 at the target point. At the same time, the remaining air flow inside the cabinet is located below this cold air, and during the process of their respective flow and cooling, it will also push the cold air upward to participate in heat exchange.

[0090] The method of switching from the combined mode with ventilation as the main and refrigeration as the auxiliary to the ventilation cooling mode is as follows:

[0091] Under the refrigeration state of the compressor, when the temperature inside the cabinet drops to the set value and at the same time the external environment also drops to the set value, the compressor is turned off and the natural ventilation cooling state is restored; until the temperature inside the cabinet rises to the set value, the compressor is restarted for auxiliary refrigeration and cooling.

[0092] When the compressor fails, the main controller cuts off the power supply of the compressor and switches to the ventilation cooling mode to ventilate and cool the inside of the cabinet to maintain the normal operation of the equipment, avoiding equipment damage caused by high temperature inside the cabinet due to lack of cooling.

[0093] In this embodiment, the air flow affected by the internal fan 5, compared with the other stream of air introduced into the cabinet through the main air duct 21, both horizontally and upward show forced convection being weak and natural convection being strong, stratified upward flow, making full use of the heat energy generated by heat to be converted into kinetic energy. The air flow located below also constitutes an upward pushing effect on the hot buoyant air flow above, achieving efficient cooling and heat dissipation.

[0094] Through the cooling device of this embodiment, the cooling mode mainly relies on natural convection and ventilation cooling, supplemented by refrigeration cooling. The cooling mode of ventilation cooling can reach 85% - 90% of the annual cooling period, and auxiliary refrigeration is required during high-temperature periods. In the existing technology that completely relies on mechanical heat exchange for cooling, the air-conditioning refrigeration mode needs to be turned on when the outdoor temperature is above 15°C. As described in the background technology, the power cabinet and communication cabinet need to be refrigerated and cooled for 220 days or more per year. Therefore, for the cabinet internal cooling device of the present invention, the designed air inlet and outlet structures and the heat exchange air flow pattern utilize the thermal buoyancy generated by the heat-generating body in the cabinet to drive the method of filling the lower negative pressure area in the cabinet with cold air flowing in from the main air duct to achieve natural convection ventilation cooling. When the outdoor ambient temperature is below 30°C, natural convection can be used without turning on the fan.

[0095] The present utility model adopts a cooling solution that combines three technical measures: natural convection, fan air supply, and auxiliary refrigeration cooling. Taking the use in Jiangsu region as an example, this method can reduce energy consumption by 90% compared with the cabinet air conditioner, greatly reducing energy consumption and simultaneously ensuring and extending the service life of the refrigeration equipment.

[0096] The present utility model realizes a cooling mode with ventilation cooling as the main and refrigeration cooling as the auxiliary. While achieving low-energy consumption cooling, it greatly reduces the continuous use time of the refrigeration equipment, significantly improves the service life of the auxiliary refrigeration equipment, and can maintain the temperature in the communication industry standard cabinet at 45°C to ensure the normal operation of the equipment even when the refrigeration equipment fails to cool down during high-temperature periods, solving the major accident hidden danger of burning communication equipment due to cooling failure, and truly realizing safety, high efficiency, energy conservation, and environmental protection.

[0097] The above description is an explanation of the present utility model, not a limitation thereof. The scope defined by the present utility model can be seen in the claims. Within the protection scope of the present utility model, any form of modification can be made.

Claims

1. An energy-saving and cooling device for a base station tower equipment cabinet, characterized in that: The cabinet comprises an outer casing (1), wherein at least two channels are arranged inside the outer casing (1), and the channels are independent of each other, wherein one channel is used to introduce external airflow into the cabinet through a first air supply port, and the other channel is used to direct the airflow inside the cabinet into the cabinet through a second air supply port.

2. The energy-saving and temperature-reducing device for the base station tower equipment cabinet according to claim 1, wherein: It also includes power equipment for transporting gas.

3. The energy-saving and cooling device for the base station tower equipment cabinet according to claim 2, characterized in that: The power equipment comprises an external fan (2) and an internal fan (5).

4. The energy-saving and cooling device for the base station tower equipment cabinet according to claim 3, wherein: The external fan (2) is installed in a channel for introducing external airflow into the cabinet through the first air supply port, and the internal fan (5) is installed in a channel for sending the airflow inside the cabinet in a directional manner into the cabinet through the second air supply port.

5. The energy-saving and cooling device for the base station tower equipment cabinet according to claim 1, characterized in that: It also includes a refrigeration module, which includes an evaporator (6), a condenser (62) and a compressor.

6. The energy-saving and temperature-reducing device for the base station tower equipment cabinet according to claim 5, characterized in that: A valve plate (3) is provided at a passage for introducing external airflow into the cabinet through a first air supply port through an adjusting power mechanism (31); the valve plate (3) is driven to swing by the adjusting power mechanism (31); and the amount of air entering the cabinet and the condenser (62) is adjusted by the swing amplitude of the valve plate (3).

7. The energy-saving and cooling device for the base station tower equipment cabinet according to claim 5, characterized in that: The wall surface of the outer enclosure (1) is respectively provided with a condenser exhaust port (63) corresponding to the condenser (62), a compressor air inlet port (65) corresponding to the compressor, a compressor ventilation and heat exhaust port corresponding to the compressor, and a drainage hole (64) for external drainage.

8. The energy-saving and temperature-reducing device for the base station tower equipment cabinet according to claim 1, characterized in that: The outer enclosure (1) is installed on the wall surface of a cabinet (7), and the cabinet (7) is a power cabinet or a communication cabinet.

9. The energy-saving and temperature-reducing device for the base station tower equipment cabinet according to claim 8, characterized in that: The top and / or side of the cabinet (7) is provided with a main air exhaust port.

10. The energy-saving and cooling device for the base station tower equipment cabinet according to claim 9, characterized in that: A second guide plate (73) is arranged inside the cabinet (7) above the main air outlet.

Images