CN118841861A - Sink control cabinet with cooling and humidity control functions and cooling and humidity control method - Google Patents

Abstract

The invention relates to the technical field of equipment cabinet cooling, in particular to a sink control cabinet with a cooling and humidity control function and a cooling and humidity control method, comprising a cabinet body, wherein the side surface and/or the top surface of the cabinet body are provided with air outlets, the cabinet body is provided with a cooling and humidity control device, the cooling and humidity control device comprises a shell, the cabinet is characterized in that an outer air inducing module, an inner air inducing module and a return air module are arranged in the shell, external air flow is induced into the cabinet through the outer air inducing module, the air flow in the cabinet is directionally sent to the equipment in the cabinet through the inner air inducing module, and the air circulation in the cabinet is realized through the return air module. Vector air supply can be performed in the control cabinet, and the temperature difference between the upper part and the lower part in the control cabinet can be automatically adjusted in real time, so that ventilation, temperature control and humidity control are realized, condensation is effectively prevented, and the control cabinet is safe, reliable, energy-saving and environment-friendly.

Description

A control cabinet with temperature reduction and humidity control function and a temperature reduction and humidity control method

Technical Field

The present invention relates to the technical field of equipment cabinet cooling, and in particular to a control cabinet with cooling and humidity control functions and a cooling and humidity control method.

Background Art

The intelligent control cabinet is an online monitoring system cabinet developed using advanced detection technology, control technology, and communication technology. It is usually used in GIS rooms and is used in conjunction with SF6 switches. The control cabinet uses PLC (programmable controller) to monitor and control closed combination electrical appliances online, and uses CPU (microprocessor) for data processing and control, networking and communication with the automation system of the central control room. The electronic and electrical equipment in the control cabinet are stacked, and the CPU generates a lot of heat.

The control cabinet has strict temperature and humidity control requirements. The existing technology uses cabinet air conditioning for cooling, but the energy consumption is large. Since the air conditioner cannot meet the humidity control requirements in the cabinet, a dehumidifier is installed in the cabinet; in order to eliminate the condensed water produced by the air conditioner and the dehumidifier, an electric heating water vapor evaporator is installed. The superimposed single-function devices including the air conditioner, dehumidifier, and electric heating water vapor evaporator are contradictory, unscientific, energy-intensive, and unreasonable; in particular, the high temperature generated by the CPU forms a large temperature difference between the layers of secondary equipment in the cabinet, which easily causes secondary condensation in the PLC equipment, thereby causing malfunctions.

Summary of the invention

In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a control cabinet with temperature reduction and humidity control functions and a temperature reduction and humidity control method, which can vector air supply in the control cabinet and automatically adjust the upper and lower temperature differences in the control cabinet in real time, thereby realizing ventilation and cooling, auxiliary refrigeration and humidity control in the cabinet, thereby effectively preventing the formation of condensation, and is safe, reliable, energy-saving and environmentally friendly.

The technical solution adopted by the present invention is as follows:

A control cabinet with a temperature reduction and humidity control function comprises a cabinet body, the side and/or top surface of the cabinet body are provided with air outlets, a temperature reduction and humidity control device is installed on the cabinet body, the temperature reduction and humidity control device comprises a shell body, an external air intake module, an internal air intake module and a return air module are arranged in the shell body, external air flow is introduced into the cabinet through the external air intake module, the air flow in the cabinet is directed to the equipment in the cabinet through the internal air intake module, and the air circulation in the cabinet is realized through the return air module.

As a further improvement of the above technical solution:

The external draft module is equipped with a valve plate through an adjusting power mechanism, and the valve plate is driven to swing by the adjusting power mechanism, thereby connecting or separating the external draft module from the internal draft module.

The external air intake module comprises a main air duct, one end of which is equipped with an external fan, and the external fan guides the external air flow into the cabinet through the main air duct.

The outer end of the shell is provided with a main air inlet of the main air duct, an air filter is installed at the main air inlet, and an external sensor is also installed at the main air inlet.

The internal air induction module comprises an internal air duct, one end of which is equipped with an internal fan, and the other end of which is provided with an internal air outlet. The internal fan sends the air flow in the cabinet to the internal air outlet through the internal air duct for output.

The return air module includes a return air duct, one end of the return air duct is provided with a return air port, the other end of the return air duct is provided with an internal circulation air supply port, the return air duct is equipped with an internal circulation fan, the internal circulation fan introduces the air inside the cabinet into the return air duct through the return air port, and then blows air toward the lower side of the cabinet through the internal circulation air supply port, thereby realizing the up and down circulation of air inside the cabinet.

The cabinet is equipped with a sensing device for detecting temperature difference, and the sensing device includes an upper sensor and a lower sensor which are arranged at intervals from top to bottom.

The temperature reduction and humidity control device also includes a refrigeration module, and the refrigeration module includes an evaporator, a condenser and a compressor.

The condensed water generated by the evaporator is led to the external air intake module through a condensed water pipe, and is volatilized into the condenser through air supply from the external air intake module.

A method for cooling and controlling humidity of a control cabinet having the above-mentioned cooling and humidity control function comprises the following steps:

When ventilation and cooling are required, the external air induction module is connected to the internal air induction module, so that the air outside the cabinet is introduced into the cabinet through the external air induction module and the internal air induction module in sequence;

When cooling and cooling are required, the external air induction module is separated from the internal air induction module, and the cooling module is started. Under the action of the internal air induction module, the air in the cabinet is cooled and cooled by the cooling module and then blown to the heating equipment in the cabinet;

When humidity control is required, the return air module blows the upper air in the cabinet out from the lower part of the cabinet through the return air duct, thereby forming an air circulation in the cabinet, and further controlling the temperature and humidity difference between the upper and lower parts of the cabinet.

The beneficial effects of the present invention are as follows:

The present invention has a compact and reasonable structure and is easy to operate. By arranging multiple fans and corresponding air ducts, air inlets, and air outlets, and by providing auxiliary refrigeration and cooling, it is possible to adjust the internal temperature and humidity environment of the control cabinet in real time, reduce the temperature difference of the layers in the control cabinet in real time, and effectively prevent condensation from being generated inside the cabinet, thereby achieving efficient, energy-saving, safe and reliable temperature reduction and humidity control functions.

The present invention also includes the following advantages:

After the external fan introduces the air outside the cabinet into the cabinet, the present invention can effectively control the speed and direction of the airflow by realizing directional or even fixed-point air supply, and realizes vector air supply, one-way controllable, layered target cooling, and orderly flow to dissipate heat outside the cabinet. This method can greatly improve the cooling and heat dissipation efficiency and reduce the refrigeration ventilation volume. The cooling mode mainly uses ventilation cooling and supplemented by refrigeration cooling greatly reduces the continuous use time of the refrigeration equipment while cooling with low energy consumption. It is safe, efficient, energy-saving and environmentally friendly, and can effectively extend the service life of the refrigeration equipment. More importantly, it solves the problem that the normal operation of the equipment in the cabinet can be maintained through the ventilation cooling mode when the compressor fails and stops refrigeration, which is a problem that urgently needs to be solved.

The present invention can effectively utilize the temperature difference between day and night and the temperature difference between seasons. In particular, in low-temperature periods, the cabinet only needs to be cooled by ventilation. After the external low-temperature airflow is introduced into the cabinet, the cabinet is cooled by the directional, layered and orderly flow of the airflow. In high-temperature periods, the cabinet is cooled by a combination of refrigeration as the main method and ventilation as the auxiliary method, which changes the existing method of cooling that completely relies on mechanical heat exchange.

In the present invention, based on the operation of the internal fan, vector fixed-point air supply is realized for part of the airflow introduced into the cabinet by the operation of the external fan, so as to perform targeted cooling of the heat source in the cabinet; and the directionally output airflow has a tendency to flow horizontally and upward in the cabinet, so that the flow direction of the airflow in the cabinet is controllable and the cooling effect is good; the other part of the airflow in the cabinet flows in an upward trend, which can cool down independently through the flow on the one hand, and can also form an upward pushing effect on the upper hot floating airflow on the other hand, so that the high-temperature air at the top of the cabinet does not need to be repeatedly heat exchanged like conventional technology, and the hot floating airflow directly overflows from the air outlet to the outside of the cabinet with the help of the pushing.

In the present invention, by arranging an internal circulation air duct, an internal circulation fan and an internal circulation air supply port, the return air flow is pressed into the lower space inside the control cabinet, forming an air flow circulation inside the control cabinet, thereby achieving temperature and humidity balance inside the control cabinet and solving the condensation problem.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross-sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of another embodiment of the present invention.

FIG3 is a cross-sectional view of the temperature reduction and humidity control device of the present invention.

FIG. 4 is a front view of a temperature reduction and humidity control device in one embodiment of the present invention.

FIG5 is a front view of a temperature reduction and humidity control device in another embodiment of the present invention.

FIG. 6 is a rear view of the temperature reduction and humidity control device of the present invention.

FIG. 7 is a bottom view of the temperature reduction and humidity control device of the present invention.

Among them: 1. Cabinet; 2. Shell; 3. External air induction module; 4. External sensor; 5. Internal air induction module; 6. Return air module; 7. Controller; 8. Refrigeration module; 9. PLC equipment; 10. CPU equipment; 11. Air filter; 12. Internal sensor; 13. Adjustment power mechanism; 14. Valve plate;

101. Top air outlet; 102. Side air outlet; 103. Upper air outlet; 104. Upper sensor; 105. Lower sensor; 106. Air guide plate; 107. Cabinet door;

201, plate; 202, partition; 203, condenser exhaust port; 204, compressor air inlet; 205, condensate pipe;

301, external fan; 302, main air duct; 303, main air inlet; 304, bypass air outlet;

501, internal fan; 502, internal air duct; 503, internal air inlet; 504, internal air outlet;

601, internal circulation fan; 602, return air outlet; 603, internal circulation air supply outlet;

801. Evaporator; 802. Condenser.

DETAILED DESCRIPTION

The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 7, the control cabinet with cooling and humidity control functions of this embodiment includes a cabinet body 1, and air outlets are arranged on the side and/or top surface of the cabinet body 1. A cooling and humidity control device is installed on the cabinet body 1. The cooling and humidity control device includes a shell 2. An external air intake module 3, an internal air intake module 5 and a return air module 6 are arranged in the shell 2. The external air flow is introduced into the cabinet through the external air intake module 3, and the air flow in the cabinet is directed to the equipment in the cabinet through the internal air intake module 5. The air circulation in the cabinet is realized through the return air module 6.

The external air induction module 3 is equipped with a valve plate 14 through the regulating power mechanism 13, and the valve plate 14 is driven by the regulating power mechanism 13 to swing, thereby connecting or separating the external air induction module 3 from the internal air induction module 5. When the valve plate 14 completely closes the opening on the partition 202 (that is, the valve plate 14 is in a completely closed state), the main air duct 302 is isolated from the internal air duct 502; when the valve plate 14 leaves the opening on the partition 202 (that is, the valve plate 14 is in an open state), the main air duct 302 is connected to the internal air duct 502.

The valve plate 14 in this embodiment can be rotatably installed relative to the wall of the main air duct 302 via a rotating structure such as a hinge, and then the posture of the valve plate 14 can be adjusted by pushing or pulling the adjusting power mechanism 13; of course, for the adjusting power mechanism 13, it can be any structural form in the prior art that can realize the swing of the valve plate 14, such as a cylinder with hinged ends, or a motor with a connecting rod mechanism, etc.

The cabinet 1 includes a cabinet door 107. The temperature-reducing and humidity-controlling device is usually installed on the side wall of the cabinet 1 opposite to the cabinet door 107. According to different usage scenarios of the cabinet, there are three different exhaust positions to choose from: the top, the upper part, and the side. The air outlet on the cabinet 1 includes a top air outlet 101 opened on the top thereof, and/or a side air outlet 102 opened on the side wall thereof and located above the temperature-reducing and humidity-controlling device, so as to facilitate the heat exchange airflow in the cabinet to be discharged from the upper part of the cabinet 1 to the outside.

In addition, as shown in FIG. 2 , the top air outlet 101 may also be equipped with an external structure such as a top cover to prevent the influence of factors such as rain; an upper air outlet 103 is provided on the top cover, so that the airflow in the cabinet can be discharged to the outside of the cabinet through the top air outlet 101 and the upper air outlet 103 in sequence.

The control cabinet is equipped with PLC equipment 9 (located on the upper layer) and CPU equipment 10 (located on the lower layer). The PLC equipment 9 also generates a large amount of heat, so the air outlet of the evaporator 801 is directly facing the PLC equipment 9, which is convenient for timely cooling of the PLC equipment 9. In addition, since the heat generation of the PLC equipment 9 and the CPU equipment 10 is uneven, a return air module 6 is added to the temperature and humidity control device, which can realize the upward and downward circulation of air in the control cabinet to achieve temperature and humidity balance and prevent condensation on the PLC equipment 9.

The external air induction module 3 includes a main air duct 302, and an external fan 301 is installed at one end of the main air duct 302. The external fan 301 guides the external air flow into the cabinet through the main air duct 302. Specifically, when the valve plate 14 is fully opened, the external fan 301 drives the external air flow to pass through the main air duct 302 and the internal air duct 502 in sequence, and then enters the cabinet from the internal air supply port 504 and the internal air inlet 503; when the valve plate 14 is fully closed, the external fan 301 drives the external air flow through the main air duct 302, and then a part of the air flow is sent to the condenser 802, and the other part of the air flow is sent to the cabinet from the bypass air supply port 304.

The internal air intake module 5 includes an internal air duct 502 , one end of which is equipped with an internal fan 501 , and the other end of the internal air duct 502 is provided with an internal air outlet 504 . The internal fan 501 sends the air flow in the cabinet through the internal air duct 502 to the internal air outlet 504 for output.

As shown in FIG6 , a plate 201 is detachably mounted on the inner end of the housing 2 facing the cabinet, and a controller 7 and an internal sensor 12 are mounted on the plate 201; in this embodiment, the internal sensor 12 and the external sensor 4 are both electrically connected to the controller 7, and the controller 7 controls the cooling mode and the air supply volume via the temperature information of the sensor;

The external sensor 4 is used to detect the temperature outside the cabinet in real time, and is combined with the temperature information of the internal sensor 12 to adjust the cooling working mode and regulate the air supply conditions of the external fan 301, the internal fan 501, etc.

In this embodiment, a guide plate 106 is arranged below the side air outlet 102 to suppress the upward and downward suction of the hot air flow in the upper part of the cabinet and reduce the cooling effect in the cabinet, and to isolate the hot air flow to be discharged from the upper part of the guide plate 106 from the cold air flow below. The guide plate 106 is arranged horizontally and can be fixed on the inner wall surface of the cabinet body 1 or on the equipment in the cabinet.

In this embodiment, a partition plate 202 is installed inside the housing 2 to isolate the main air duct 302 from the internal air duct 502 . An opening corresponding to the valve plate 14 is provided on the partition plate 202 .

As shown in Figure 6, an internal air inlet 503 for the internal fan 501 to draw air into the internal air duct 502, an internal air supply port 504 for the internal air duct 502 to supply air to the inside of the cabinet 1, and a bypass air supply port 304 for the main air duct 302 to supply air to the inside of the cabinet 1 can be opened on the plate 201; the bypass air supply port 304 can be opened on the plate 201 and located above the internal air supply port 504.

The outer end of the housing 2 is provided with a total air inlet 303 of the total air duct 302, the external fan 301 is arranged at the total air inlet 303, the total air inlet 303 is equipped with an air filter 11, and the total air inlet 303 is also equipped with an external sensor 4. In this embodiment, the air filter 11 adopts a filter with a composite structure of primary efficiency and medium efficiency, and the layered filtration can extend the service life;

In this embodiment, as shown in Figures 4 and 5, the shell 2 is equipped with a hole plate to form a total air inlet 303; in addition, the condenser exhaust port 203 of the condenser 802 is also arranged at the outer end of the shell 2. As shown in Figure 4, the hole groups corresponding to the total air inlet 303 and the condenser exhaust port 203 can be arranged at intervals, or, as shown in Figure 5, the hole groups corresponding to the total air inlet 303 and the condenser exhaust port 203 can cover the entire outer side surface of the outer end of the shell 2.

The return air module 6 includes a return air duct, one end of which is provided with a return air port 602, and the other end of which is provided with an internal circulation air supply port 603. The return air duct is equipped with an internal circulation fan 601. The internal circulation fan 601 introduces the air inside the cabinet 1 into the return air duct through the return air port 602, and then blows air toward the lower side of the cabinet 1 through the internal circulation air supply port 603, thereby realizing the up and down circulation of the air inside the cabinet 1.

In this embodiment, the main air duct 302 and the return air duct, and the inner air duct 502 and the return air duct are independent of each other, and the main air duct 302 and the inner air duct 502 are separated by a valve plate 14 .

After the external fan 301 introduces the air outside the cabinet into the cabinet, the internal air outlet 504 realizes directional or even fixed-point air supply, and can effectively control the speed and direction of the air flow, so as to form stratified air flow, one-way controllable, target point cooling, and orderly flow heat removal in the cabinet; that is:

In this embodiment, when in the cooling state, the air inside the cabinet is sucked into the inner air duct 502 by the inner fan 501, and the refrigerated air is sent into the cabinet through the evaporator 801. While the cold air is circulated internally for cooling, the outer fan 301 sends the air outside the cabinet into the cabinet from the bypass air supply port 304 through the main air duct 302. The airflow entering the cabinet through the bypass air supply port 304 discharges the upper hot air in the cabinet directly from the top air outlet 101 and/or the side air outlet 102 to the outside of the cabinet. The discharged hot air does not need to participate in repeated mechanical heat exchange. This method can reduce the power consumption of the refrigeration equipment configuration and further save the energy consumption required for cooling; the other part of the airflow participates in the heat exchange with the condenser.

The temperature reduction and humidity control device further includes a refrigeration module 8 , which includes an evaporator 801 , a condenser 802 and a compressor; the evaporator 801 is mounted at the inner air outlet 504 .

In this embodiment, the evaporator 801 and other refrigeration components used therewith, such as the condenser 802, the compressor, etc., can be placed in the shell 2 in an orderly manner. On the one hand, the internal space of the shell 2 is rationally utilized, making the overall structure of the cooling device compact; on the other hand, it is also convenient for the valve plate 14 to swing.

Similar to the refrigeration equipment in the prior art, the refrigeration equipment includes a compressor, a condenser 802 and an evaporator 801, which are interconnected via pipelines to form a circulating refrigeration path, and the refrigerant flows in the circulating refrigeration path. Specifically, the low-temperature and low-pressure refrigerant with a boiling point lower than room temperature absorbs heat in the evaporator 801 and evaporates into gas, so that the air flow in the cabinet flowing through the evaporator 801 is converted into cold air, and 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 to the condenser 802, 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, and the refrigerant returns to the evaporator 801, realizing the circulation of the refrigerant and the refrigeration work of the refrigeration equipment.

The condensed water generated by the evaporator 801 is led to the external air inlet 303 by the condensed water pipe 205, and is volatilized into the condenser 802 by the air supply of the external air inlet 301. The condensed water generated by the evaporator 801 is led to the main air inlet 303 by the condensed water pipe 205, and is volatilized into the condenser 802 by the air supply of the external fan 301.

The wall of the shell 2 is provided with a condenser exhaust port 203 corresponding to the condenser 802, a compressor air inlet 204 corresponding to the compressor, a compressor ventilation and heat exhaust port corresponding to the compressor, and a drainage hole for external drainage. The compressor air inlet 204, the condenser exhaust port 203, and the drainage hole can be arranged on the bottom wall of the shell 2; they can also be arranged on other walls of the shell 2, and can be adjusted accordingly according to the arrangement position of the corresponding equipment inside the shell 2.

The cabinet 1 is equipped with a sensing device for detecting temperature difference. As shown in Figures 1 and 2, the sensing device includes an upper sensor 104 and a lower sensor 105 arranged from top to bottom; the upper sensor 104 is used to detect the temperature and humidity above the internal space of the cabinet with temperature reduction and humidity control functions, and the lower sensor 105 is used to detect the temperature and humidity below the internal space of the cabinet with temperature reduction and humidity control functions.

The temperature reduction and humidity control device in the present invention is suitable for various climate environments, and adopts temperature negative feedback fan temperature control speed regulation, fan step speed change, and temperature controlled constant speed intermittent air supply, supplemented by refrigeration ventilation and cooling to save energy and reduce consumption.

The present invention can effectively utilize the temperature difference between day and night and the temperature difference between seasons. Especially in the low temperature period, it only needs to use ventilation cooling method. After the external low-temperature airflow is introduced into the cabinet, the cabinet is cooled by the directional, layered and orderly flow of the airflow. In the high temperature period, the cabinet is cooled by a combination of auxiliary refrigeration and ventilation cooling, which changes the existing cooling method that relies on complete mechanical heat exchange.

The directional and layered cooling structure and cooling mode in the cabinet of the present invention can be matched and set in a targeted manner according to different equipment, different heating points, and heat dissipation requirements in the cabinet, thereby meeting different cooling requirements in the cabinet, with high flexibility in use and outstanding cooling effect.

This embodiment also proposes a cooling and humidity control method for a control cabinet with cooling and humidity control functions, including a ventilation cooling mode, a ventilation and refrigeration combined cooling mode, and a humidity control mode. By switching between the modes, the internal temperature of the cabinet 1 is effectively ensured to be within a preset range;

In the ventilation and cooling mode, the cooling and humidity control method of the cooling and humidity control device of this embodiment includes the following steps:

When ventilation and cooling are required, the external air induction module 3 is connected to the internal air induction module 5, so that the air outside the cabinet is introduced into the cabinet through the external air induction module 3 and the internal air induction module 5 in sequence;

Specifically, when the temperature inside the cabinet is greater than or equal to the ventilation and cooling setting value, the external fan 301 is turned on, and the valve plate 14 is fully opened by adjusting the power mechanism 13, so that the main air duct 302 is connected with the internal air duct 502;

The external fan 301 drives the air outside the cabinet to enter the internal air duct 502 through the main air duct 302, and then blows to the heating equipment in the cabinet through the internal air inlet 503 and the internal air supply port 504;

Thus, ventilation and cooling are performed through the external air induction module 3 and the internal air induction module 5;

When the temperature inside the cabinet is lower than the ventilation and cooling setting value, it means that there is no need to cool down the cabinet, and the cooling device does not need to work.

In the ventilation and refrigeration combined cooling mode, the cooling and humidity control method of the cooling and humidity control device of this embodiment includes the following steps:

When cooling is required, the external air induction module 3 is separated from the internal air induction module 5, and the refrigeration module 8 is started. Under the action of the internal air induction module 5, the air in the cabinet is cooled by the refrigeration module 8 and then blown to the heating equipment in the cabinet;

Specifically, during the ventilation and cooling process, if the temperature inside the cabinet is greater than or equal to the cooling set value, auxiliary cooling will begin;

Turn on the compressor, and push the valve plate 14 to be completely closed by adjusting the power mechanism 13, so as to separate the inner air duct 502 from the main air duct 302;

The external fan 301 is started to introduce the air outside the cabinet into the main air duct 302. A part of the air in the main air duct 302 passes through the condenser 802 to participate in heat exchange, and the other part directly enters the cabinet through the bypass air outlet 304;

The internal fan 501 is started, and the air in the cabinet is introduced into the internal air duct 502 through the internal air inlet 503, and then blown out from the internal air outlet 504 through the evaporator 801 and blown toward the PLC device 9;

The condensed water generated by the evaporator 801 is led to the main air inlet 303 through the condensed water pipe 205, and is volatilized by the external fan 301 into the condenser 802 through air supply, which helps to improve the efficiency of the condenser heat exchange and solves the problem of condensed water discharge;

In addition, when the compressor is in cooling state, if the temperature inside the cabinet drops to the set value and the external environment also drops to the set value, the compressor will be turned off and the natural ventilation cooling state will be restored; until the temperature inside the cabinet rises to the set value, the compressor will be turned on again to assist in cooling and cooling.

When the compressor fails, the main controller cuts off the power supply of the compressor and switches to ventilation and cooling mode to ventilate and cool the cabinet to maintain normal operation of the equipment, avoiding high temperature in the cabinet due to lack of cooling, which may cause damage to components and cause equipment failure.

In this embodiment, by arranging the bypass air supply port 304 at a relatively upper position, the airflow introduced into the cabinet through the main air duct 302 can directly drive the hot air above the inner part of the cabinet to directly flow out of the cabinet through the air outlet, without mechanical heat exchange, which can reduce the configuration power of the refrigeration equipment and save energy consumption;

In the humidity control mode, the temperature reduction and humidity control method of the temperature reduction and humidity control device of this embodiment includes the following steps:

When humidity control is required, the return air module 6 blows the upper air in the cabinet out from the lower part of the cabinet through the return air duct, thereby forming an air circulation in the cabinet, and further controlling the temperature and humidity difference between the upper and lower parts of the cabinet.

Specifically, when the temperature difference between the upper sensor 104 and the lower sensor 105 is greater than 5°C, the internal circulation fan 601 is turned on; when the temperature difference between the upper sensor 104 and the lower sensor 105 is less than 3°C, the internal circulation fan 601 is turned off, so that the humidity control value in the control cabinet with temperature reduction and humidity control function is less than 75%, and the temperature difference is ≯3°C (the industry stipulates that the upper and lower temperature difference is ≯10°C). The upper and lower temperatures in the cabinet are balanced, and no cold surface is formed on the CPU surface, thereby fundamentally eliminating the hidden danger of condensation on the CPU equipment.

The auxiliary refrigeration compressor power of the temperature and humidity control device is 30% less than that of the air-conditioning cabinet compressor.

By adopting a cooling mode with ventilation cooling as the main method and refrigeration cooling as the auxiliary method, 85% of the cooling period throughout the year can be covered, and the remaining 15% of the cooling period requires intermittent auxiliary refrigeration by temperature difference control; while in the existing technology that relies entirely on mechanical heat exchange for cooling, it is necessary to turn on the air conditioning refrigeration mode when the external temperature is above 15°C. As described in the background technology, the refrigeration and cooling of the control cabinet reaches 220 days or more per year; therefore, the cooling and humidity control device of the present invention, its designed air inlet and exhaust port structure and heat exchange airflow form, fully utilize the heat buoyancy generated by the heating element in the cabinet to drive the external cold air flowing into the main air duct to fill the negative pressure zone in the lower part of the cabinet to achieve natural convection ventilation cooling, and the outdoor ambient temperature is below 28°C without turning on the fan. The cooling scheme combining three technical measures of natural convection, fan air supply, and auxiliary refrigeration and cooling can greatly reduce energy consumption and simultaneously ensure and extend the life of the refrigeration equipment.

The present invention realizes a cooling mode with ventilation cooling as the main and refrigeration cooling as the auxiliary. While cooling with low energy consumption, it greatly reduces the continuous use time of the refrigeration equipment and greatly improves the service life of the auxiliary refrigeration equipment. When the refrigeration equipment fails to cool down during high temperature periods, it can also control the temperature inside the cabinet to be within the range of ≯ 3°C temperature difference outside the cabinet, ensuring the normal operation of the equipment. It solves the biggest potential accident risk of burning communication equipment due to cooling failure, and truly realizes safety, high efficiency, energy saving and environmental protection.

The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims (8)

1. The utility model provides a control by sink cabinet with cooling accuse wet function which characterized in that: the intelligent cabinet temperature and humidity control device comprises a cabinet body (1), wherein an air outlet is arranged on the side face and/or the top face of the cabinet body (1), a temperature and humidity control device is arranged on the cabinet body (1), the temperature and humidity control device comprises a shell (2), an outer air guiding module (3), an inner air guiding module (5) and an air return module (6) are arranged in the shell (2), external air flow is led into the cabinet through the outer air guiding module (3), the air flow in the cabinet is directionally sent to cabinet inner equipment through the inner air guiding module (5), and the air circulation in the cabinet is realized through the air return module (6);

the valve plate (14) is assembled at the outer air induction module (3) through the adjusting power mechanism (13), and the valve plate (14) is driven to swing by the adjusting power mechanism (13), so that the outer air induction module (3) is communicated with or separated from the inner air induction module (5);

the cooling and humidity control device further comprises a refrigeration module (8), and the refrigeration module (8) comprises an evaporator (801), a condenser (802) and a compressor.

2. The control cubicle with cooling and humidity control functions as claimed in claim 1, wherein: the external air guiding module (3) comprises a total air duct (302), one end of the total air duct (302) is provided with an external fan (301), and the external fan (301) guides external air to the cabinet through the total air duct (302).

3. The control cubicle with cooling and humidity control functions as claimed in claim 2, wherein: the outer end of the shell (2) is provided with a total air inlet (303) of a total air duct (302), an air filter (11) is assembled at the position of the total air inlet (303), and an external sensor (4) is also installed at the position of the total air inlet (303).

4. The control cubicle with cooling and humidity control functions as claimed in claim 1, wherein: the inner air inducing module (5) comprises an inner air duct (502), an inner fan (501) is assembled at one end of the inner air duct (502), an inner air supply opening (504) is arranged at the other end of the inner air duct (502), and the inner fan (501) outputs air in the cabinet to the inner air supply opening (504) through the inner air duct (502).

5. The control cubicle with cooling and humidity control functions as claimed in claim 1, wherein: the air return module (6) comprises an air return air channel, one end of the air return air channel is provided with an air return opening (602), the other end of the air return air channel is provided with an inner circulation air supply opening (603), an inner circulation fan (601) is arranged in the air return air channel in a matched mode, the inner circulation fan (601) introduces air inside the cabinet body (1) into the air return air channel through the air return opening (602), and the air is blown towards the lower side inside the cabinet body (1) through the inner circulation air supply opening (603), so that the air inside the cabinet body (1) circulates up and down.

6. The control cubicle with cooling and humidity control functions as claimed in claim 1, wherein: the inside of the cabinet body (1) is provided with a sensing device for detecting the temperature difference, and the sensing device comprises an upper sensor (104) and a lower sensor (105) which are arranged at intervals from top to bottom.

7. The control cubicle with cooling and humidity control functions as claimed in claim 1, wherein: the condensed water generated by the evaporator (801) is led to the outer induced air module (3) by adopting the condensed water pipe (205), and is sent to the condenser (802) by air supply volatilization of the outer induced air module (3).

8. A method for cooling and controlling humidity of a control cabinet with cooling and humidity controlling functions as claimed in claim 1, which is characterized in that: the method comprises the following steps:

when ventilation and cooling are needed, the outer air inducing module (3) is communicated with the inner air inducing module (5), so that air outside the cabinet is introduced into the cabinet through the outer air inducing module (3) and the inner air inducing module (5) in sequence;

When cooling is needed, the outer air inducing module (3) is separated from the inner air inducing module (5), the refrigerating module (8) is started, and under the action of the inner air inducing module (5), air in the cabinet is cooled by the refrigerating module (8) and then blown to heating equipment in the cabinet;

When humidity control is needed, the air return module (6) blows air above the inside of the cabinet out from the lower inside of the cabinet through the air return duct, so that air flow circulation in the cabinet is formed, and the temperature and humidity difference between the upper part and the lower part of the inside of the cabinet is controlled.