CN203880855U - Circulation heat exchange energy-saving device outside communication machine room - Google Patents

Abstract

The utility model discloses an energy-saving device for external circulation heat exchange in a communication machine room, which is provided with a heat exchanger on the rear outside of the machine room, a cooling and radiating pipe is arranged in the frame of the heat exchanger, and a cold air is arranged on the left side of the heat exchanger. The air collecting box and the air outlet of the cold air collecting box are provided with two cold air passages on the left and right. The communication network equipment is installed in the computer room. The air conditioner is installed on the rear side of the communication network equipment. The bottom of the air conditioner is provided with a cold air channel slot, the upper end of the cold air channel slot is provided with a cold air inlet mesh plate, the upper end of the communication network equipment is provided with a cold air outlet hole, and the bottom of the air conditioner is provided with a cold air pool, and the cold air channel slot is in turn They are respectively connected with the cold air pool. The right end of the hot air box is equipped with an exhaust fan, and the right side of the exhaust fan is equipped with an exhaust duct. The suction port of the exhaust duct is installed in the machine room. There is a temperature controller in the machine room. Equipped with an outdoor temperature sensor.

Description

An energy-saving device for external circulation heat exchange in a communication room

technical field

The utility model relates to an air circulation device for a communication machine room, in particular to an external circulation heat exchange energy-saving device for a communication machine room.

Background technique

With the progress of the society and the rapid development of the communication network business, the communication network sites and IDC communication rooms in various places have been "scattered", and in order to improve the quality of communication, there is a trend of encryption and expansion, and the energy consumption of network equipment operated at the same time also showed a straight-line upward trend. Therefore, how to save energy and reduce consumption under the premise of ensuring network quality, reduce operators' network operation and maintenance costs, and realize "low-cost, high-efficiency" operation is the biggest problem facing every operator.

At present, the existing communication equipment room adopts a heat-insulated and sealed wall structure. When the ambient temperature is higher than the set temperature of the equipment room (generally 21°C-26°C), it can avoid the intrusion of external heat conduction and reduce the temperature to a certain extent. Air-conditioning cooling consumes energy; however, when the ambient temperature is lower than the set temperature of the computer room, this kind of closed enclosure structure cannot use external cold sources to cool down the room, and can only rely on air-conditioning to maintain the set temperature of the communication room environment, resulting in The huge waste of air-conditioning and cooling energy consumption has caused huge pressure on network operation and maintenance costs for operators.

Although a small number of communication equipment rooms try to adopt equipment room ventilation, when the ambient temperature is lower than the set temperature of the equipment room (generally 21°C-26°C), the external environment cold source is directly introduced to reduce the temperature of the communication equipment room and reduce the cooling energy consumption of the air conditioner , but there are the following defects in use:

One is low efficiency: Due to the moisture-proof and dust-proof requirements of the communication room, the existing communication ventilation equipment generally adopts two-stage filtration and absorption, and two-stage filtration is used. Although the dust-proof and moisture-proof problems are solved to a certain extent, but It also brings a fundamental problem, that is, after being blocked by the two-stage filter, the actual amount of cold air introduced by the ventilation equipment in the computer room is small, the heat carried by the fresh air is seriously insufficient, and the use effect is not obvious. Second, the maintenance workload is heavy: the change of air quality, ambient temperature and temperature difference is the key period for adjusting the temperature of the computer room. In the three seasons of spring, autumn and winter in the area north of the Yangtze River and Huaihe River in my country, the phenomenon of blowing sand, floating dust and floating flocs is common. . During the operation of the ventilation motor in the computer room, blowing sand, floating dust, and floating lint often cause the two-stage filter to be "dirty and blocked" after a short period of operation. According to the actual maintenance experience, the ventilation and energy-saving equipment in the general computer room will be completely dirty and blocked after about half a month of operation, and the two-stage filter needs to be replaced once. There are hundreds of stations in a city, and the maintenance workload can be imagined. The third is high operating costs: replacing the two-stage filter screen once every half a month brings at least two cost problems: a large number of filter screen spare parts need to be configured, which increases the cost very high; a large amount of maintenance manpower, material resources, and transportation tools need to be invested Increased operating costs. The fourth is that it is actually in a state of disuse: in the current situation where the network maintenance funds are limited and the maintenance personnel and transportation equipment are relatively tight, it is impossible to replace the two-stage filter once every half a month. This has led our communication companies to invest a lot of money in the construction of thousands of ventilation equipment in the communication room, but the filter screen cannot be replaced in time. What kind of "criminal" level waste is it to consume electric energy. Fifth, there is a potential fire accident: when the operating temperature of the external environment is set, even if the filter screen of the ventilation equipment in the communication room is in a "dirty and blocked" state, the ventilation motor will continue to run. We know that the ventilation motor itself is cooled by circulating cold air. In this state, there is basically no cold air flowing through the motor, which will cause the coil of the ventilation motor to continue to heat up for a long time, which is prone to insulation aging and damage, and even causes short-circuit fire accidents. There are obvious hidden dangers of fire safety accidents.

Contents of the invention

The solution of the present invention is to overcome the above defects and provide an energy-saving device for external circulation heat exchange in a channel-enclosed communication room to improve the quality of the working environment of communication network equipment, reduce investment in network operation and maintenance, and realize "low cost, high benefit" operation.

The scheme of the utility model is composed of a machine room, a cold air passage, an exhaust pipe, a heat exchanger, a temperature controller, an exhaust fan, an air conditioner, a cold air pool and a cold air passage groove, and its structural feature is that a heat exchange is arranged on the rear and outer sides of the machine room. There are cooling and heat dissipation pipes in the frame of the heat exchanger, and a cold air collection box is provided on the left side of the heat exchanger. There are two left and right cold air passages on the air outlet of the cold air collection box. Two afterburner fans. The computer room is equipped with communication network equipment, and the communication network equipment is arranged and installed in the computer room in sequence. The rear side of the communication network equipment is equipped with an air conditioner, and the bottom of the air conditioner is provided with a floor trough. , the upper end of the cold air channel groove is provided with a cold air intake mesh plate, and the upper end of the communication network equipment is provided with a cold air outlet hole. There is a cold air pool in the floor trough at the bottom of the air conditioner, and the cold air channel slots are respectively connected with the cold air pool in turn. Closed movable insulation door. The right end of the heat exchanger is equipped with a hot air box, and the right end of the hot air box is equipped with an exhaust fan. The right side of the exhaust fan is equipped with an exhaust duct. The suction port of the exhaust duct is installed in the machine room. The middle part of the exhaust duct is equipped with a booster induced draft fan for the movable insulating door. There is a temperature controller in the machine room, an outdoor temperature sensor is installed on the left side of the temperature controller, an indoor temperature sensor is installed on the right side, and an AC power supply contactor is installed on the lower left side of the temperature controller.

Its working process:

1. Set the start-stop temperature on the temperature controller (the outdoor temperature of the motor start-up temperature setting point is 20°C, and the motor shutdown temperature set point is the indoor temperature of the communication room is 21°C);

2. The outdoor temperature sensor of the communication equipment room detects the outdoor ambient temperature of the communication equipment room;

3. When the outdoor ambient temperature of the communication equipment room reaches the motor startup set temperature and is lower than 20°C, the temperature controller sends the motor startup control drive signal;

4. The electromagnetic coil of the AC power supply contactor of the motor is energized to work, the AC power supply contactor pulls in and conducts, and the motor of the exhaust fan and the motor of the booster fan start to draw air;

5. The air in the hot air duct starts to flow, forming a negative pressure at the hot air self-closing heat insulation movable door, opening the hot air self-closing heat insulation movable door, and drawing the hot air with a higher temperature in the communication room into the air duct;

6. The high temperature gas in the communication room flows in the air duct, enters the heat exchanger, and transfers the heat to the external environment of the communication room through the aluminum heat conducting plate, and becomes air with a lower temperature (hereinafter referred to as cold air);

7. The cold air is sucked into the cold air channel by the afterburner fan, and a positive pressure is formed at the cold air self-closing heat insulation movable door, and the self-closing movable door is opened to enter the cold air channel groove, and the air inlet mesh plate at the upper end of the cold air channel groove is upward. It is discharged through the cold air outlet on the upper end of the communication network equipment, and participates in the air circulation of the air conditioner;

8. When the temperature in the communication equipment room drops to the set point (24°C) for the environment protection temperature of the equipment room, the air conditioner in the communication equipment room stops working;

9. When the outdoor ambient temperature of the communication room reaches the motor shutdown set temperature and the motor shutdown temperature set point temperature is lower than 21°C, the temperature controller stops sending the motor startup control drive signal;

10. The electromagnetic coil of the AC power supply contactor of the motor loses power, the AC power supply contactor releases the contacts and conducts, the motor stops running, and the ventilation stops;

11. When the temperature of the computer room is higher than 23 degrees, the work steps (3-10) are automatically executed, but the air conditioner in the communication computer room is not running;

12. When the external ambient temperature is higher than 20°C, the temperature controller stops sending the motor to turn on the control drive signal; the electromagnetic coil of the AC power supply contactor of the motor loses power, the AC power supply contactor releases the contacts and conducts, the motor stops running, and the ventilation stops;

13. The hot-air self-closing heat-insulating movable door and the cold-air self-closing heat-insulating movable door are automatically closed under the action of spring force to ensure that the communication room itself is airtight and heat-insulated.

14. The temperature of the communication equipment room rises and reaches the setting point of the environmental protection temperature of the equipment room (about 24°C), and the air conditioner in the communication equipment room starts to work.

15. If a fire breaks out in the communication room, the temperature controller will automatically stop sending the motor start control drive signal according to the temperature detection result of the indoor temperature sensor (greater than 65°C), the AC power supply contactor electromagnetic coil of the motor will lose power, and the AC power supply contactor will be released The contacts are turned on, the motor stops, and the ventilation stops. The hot air self-returning heat-insulating movable door and the cold air self-resetting heat-insulating movable door are automatically closed under the action of spring force to ensure that the communication room itself is fire-proof and airtight.

Four, the utility model innovation point

(1) The utility model has obvious energy-saving effect

As shown in the picture above, the aluminum heat conduction plate is installed with a double contact surface folded at 45 ^o to ensure maximum heat exchange.

According to Q= Q: heat conduction; λ: thermal conductivity, aluminum is 0.237KW/(m ² °C), b: thickness; (t ₁ -t ₂ ): temperature difference is 0.005m thick aluminum plate per square meter, the temperature difference between inside and outside the communication room is 10 °C is {[0.237KW/(m ² °C)]/0.005}*10*1.44*2=68.25KW,

It is basically equivalent to a communication room air conditioner with a cooling capacity of 50KW, which only consumes the running energy of the ventilation motor. The cooling energy efficiency ratio is as high as 40-60, which is more than 20 times that of the communication room air conditioner. the

Calculated on the basis of DC load 2000A communication room, the heat load is 53.6V*2000A=107.2KW,

The energy consumption of the air conditioner in the airtight and heat-insulated communication room is 107.2KW/2.5 (the energy efficiency ratio of the general machine room air conditioner) = 42.88KW. The external circulation heat exchange energy-saving device of the communication room can be equipped with 2.5 square meters to meet the temperature guarantee of the communication room when the outdoor temperature of the communication room is 16°C. Requirements; configuration of 5 square meters can meet the temperature guarantee requirements of the communication equipment room when the outdoor temperature of the communication equipment room is 20°C.

According to relevant data, the period of outdoor temperature below 16°C in the area north of the Jianghuai River is at least 5/12 of the year; the period of time below 20°C is at least 6/12 of the year.

We calculate the energy-saving benefit according to the time period below 16°C. The energy consumption of the fan operation is 3KW, and the annual electricity saving is (42.88KW-3KW)*24*365*5/12=145562KWH, calculated according to the comprehensive production electricity fee of 1.00/KWH, Annual savings of 145,600 yuan in electricity expenses for communication companies.

And the construction investment cost of the utility model is no more than 50,000 yuan, and the investment can be recovered in less than half a year, which has a higher economic return.

(2) High degree of automation, strong self-adaption ability, basically no need for special maintenance

1. The ventilation is automatically turned on and off according to the ambient temperature of the communication room, with strong self-adaptive ability and high degree of automation, basically no human operation is required, and the maintenance cost is low; the ventilation will be automatically stopped in case of fire;

2. The spring self-closing heat-insulating and fire-proof movable door is adopted, and the positive and negative pressure formed when the fan is running is automatically opened; when the fan stops running, it is automatically closed under the action of the spring force to ensure that the communication room is fire-proof and airtight without special Control circuit, energy saving, safe and reliable.

(3) Wide application range and long application period.

It can be seen from the above figure that the annual average temperature in the areas north of the Yangtze River in my country and Qinghai, Tibet and other vast areas is below 16°C. Using the present invention can save 50%-80% of the electricity cost for air conditioning and refrigeration in communication equipment rooms (according to regional differences, benefits The length of the running period is different), which has obvious economic benefits.

(4) Suitable for large-scale promotion and use

1. Mature technology and high degree of marketization

The utility model adopts a temperature controller and a draft-assisted fan motor, which are sold in the market, and the self-closing heat-insulating movable door and the air duct have a simple structure, which saves the production cost;

2. The materials and equipment used in the utility model are available in the market with low cost and are easy to be popularized and used in a large scale.

(5) High degree of safety

The entire heat exchange cycle gas flow of the utility model is carried out in the airtight box and the channel, and the heat exchange is conducted and exchanged through the aluminum heat conduction plate, without contact with the external environment, and dust and moisture are basically prevented from entering the machine room.

In the case of a sudden fire in the communication room, the temperature controller automatically stops sending the motor start control drive signal according to the temperature detection result of the indoor temperature sensor (greater than 65°C), the AC power supply contactor electromagnetic coil of the motor loses power, and the AC power supply contactor releases the contactor. The head is turned on, the motor stops running, and the ventilation stops. The hot air self-returning heat-insulating movable door and the cold air self-resetting heat-insulating movable door are automatically closed under the action of spring force to ensure that the communication room itself is fire-proof and airtight.

The utility model has a simple structure, fully conforms to the national energy saving and emission reduction policy, and meets the requirements of enterprise safety and fire protection standards.

Further detailed description will be given below in conjunction with the accompanying drawings.

Description of drawings

Figure 1 is a schematic diagram of the top view of the external circulation system;

Fig. 2 is a schematic diagram of the side view structure of the external circulation system;

Fig. 3 is a schematic diagram of the rear view structure of the external circulation system;

Fig. 4 is a structural schematic diagram of a heat exchanger;

Figure 5 is a schematic diagram of the structure of a self-closing heat-insulating door;

Figure 6 is a schematic diagram of the connection of the control circuit;

Fig. 7 is a structural schematic diagram of a heat dissipation pipeline;

Figure 8 shows the distribution of annual average temperature in China.

Detailed ways

The rear outside of the machine room 1 shown in Fig. 1-4 is provided with heat exchanger 7, is provided with cooling radiating pipe 34 in the frame 33 of heat exchanger, is provided with cold wind collecting box 6 on the left side of heat exchanger, and cold wind collecting box A left cold air passage 4 and a right cold air passage 5 are arranged on the exit of the outlet, a left afterburner fan 3 is arranged on the left cold air passage, a right afterburner fan 11 is arranged on the right cold air passage, and a communication network device 16 is arranged in the machine room. The equipment is arranged and installed in the machine room in sequence, the rear side of the ventilation network equipment is provided with an air conditioner 10, the bottom end of the air conditioner is provided with a floor trough, the bottom end of the ventilation network equipment is provided with a cold air channel slot 20, and the upper end of the cold air channel slot is provided with The cold air inlet net plate 21, the upper end of the communication network equipment is provided with the cold air outlet hole 19, the floor trough at the bottom of the air conditioner is provided with a cold air pool 13, the cold air channel grooves are respectively connected with the cold air pool successively, and the outlet of the left cold air channel 4 The air outlet is connected to the left air inlet at the left end of the cold air pool, and the left self-closing movable insulating door 2 is arranged on the left air inlet, and the air outlet of the right cold air channel 5 is connected to the right air inlet at the right end of the cold air pool, and the right air inlet is provided with There is a right self-closing movable insulating door 12, the right end of the heat exchanger is provided with a hot air box 9, the right end of the hot air box is provided with an exhaust fan 8, and the right side of the exhaust fan is equipped with an exhaust duct 15, and the air suction port 18 of the exhaust duct is installed on In the machine room, a self-closing movable insulating door 17 is provided at the machine room entrance of the air extraction duct, a power-assisted induced draft fan 14 is provided at the middle part of the air extraction duct, and a temperature controller is provided in the machine room.

The self-closing movable insulating door shown in Fig. 5 is made up of door frame, insulating door and tension spring, and the inner side of door frame 22 is provided with insulating door 23, and back-moving spring 24 is equipped with at the junction of the right end of insulating door and door frame.

The machine room shown in Figure 6 is provided with a temperature controller 30, the left side of the temperature controller is provided with an outdoor temperature sensor 29, the right side is provided with an indoor temperature sensor 31, and the bottom side of the temperature controller is provided with a control circuit connection line 32 , The lower left side of the temperature controller is provided with an AC power supply contactor 28, and the lower end of the AC power supply contactor is connected with an exhaust fan motor 27, a booster induced draft fan motor 26 and two left and right afterburner fan motors 25.

The cooling and heat dissipation pipe 34 shown in FIG. 7 is composed of an outer pipe and an inner pipe. An inner pipe 36 is arranged in the middle of the outer pipe, and a folded heat conducting sheet 35 is arranged between the inner pipe and the outer pipe.

On the temperature distribution map shown in Figure 8, the average temperature in the area north of the Yangtze River in my country and in Qinghai, Tibet and other vast areas is below 16°C, and the utility model can be promoted throughout the country, which can save 50-70% of the air-conditioning and cooling electricity in the communication room above.

Claims (4)

1. a communications equipment room outer circulation heat exchange energy-saving device, by machine room, cold air duct, air draft pipe, heat exchanger, temperature controller, air exhauster, air conditioner, cold wind pond and cold air duct groove form, it is characterized in that: the rear outside of described machine room (1) is provided with heat exchanger (7), in the framework of heat exchanger (33), be provided with cooling heat dissipation pipeline (34), the left side of heat exchanger is provided with cold wind air collecting box (6), the outlet of cold wind air collecting box is provided with left cold air duct (4), right cold air duct (5), left cold air duct is provided with left afterburning blower fan (3), right cold air duct is provided with right afterburning blower fan (11), in machine room, be provided with communication network device (16), communication network device is arranged in order and is arranged in machine room, the rear side of ventilation network equipment is provided with air conditioner (10), the bottom of air conditioner is provided with geosyncline, the bottom of ventilation network equipment is provided with cold air duct groove (20), the upper end of cold air duct groove is provided with cold wind air intake web plate (21), the upper end of communication network device is provided with cold wind exhaust vent (19), in the geosyncline of air conditioner bottom, be provided with cold wind pond (13), cold air duct groove is connected with cold wind pond respectively successively, the air outlet of left cold air duct (4) is connected on the left air inlet of cold wind pond left end, left air inlet is provided with the movable insulated door (2) of left self-closing, the air outlet of right cold air duct (5) is connected on the right air inlet of cold wind pond right-hand member, right air inlet is provided with the movable insulated door (12) of right self-closing, the right-hand member of heat exchanger is provided with hot bellows (9), the right-hand member of hot bellows is provided with air exhauster (8), air draft pipe (15) is equipped with on the right side of air exhauster, the inlet scoop of air draft pipe (18) is arranged in machine room, the machine room porch of air draft pipe is provided with the movable insulated door (17) of self-closing, the middle part of air draft pipe is provided with power-assisted air-introduced machine (14), in machine room, be provided with temperature controller.

2. communications equipment room outer circulation heat exchange energy-saving device according to claim 1, it is characterized in that: the movable insulated door of described self-closing is comprised of doorframe, insulated door and tensioning spring, the inboard of doorframe (22) is provided with insulated door (23), and back-moving spring (24) is equipped with in the right-hand member of insulated door and the junction of doorframe.

3. communications equipment room outer circulation heat exchange energy-saving device according to claim 1, it is characterized in that: in described machine room, be provided with temperature controller (30), the left-external side of temperature controller is provided with outdoor temperature sensor (29), right side is provided with indoor temperature transmitter (31), the bottom side of temperature controller is provided with control circuit connecting line (32), the lower-left side of temperature controller is provided with Alternating Current Power Supply contactor (28), the lower end of Alternating Current Power Supply contactor is connected with air exhauster motor (27), two the afterburning blower motors in power-assisted id-motor (26) and left and right (25).

4. communications equipment room outer circulation heat exchange energy-saving device according to claim 1, it is characterized in that: described cooling heat dissipation pipeline (34) is comprised of outer tube and inner tube, the middle part of outer tube is provided with inner tube (36), is provided with collapsible conducting strip (35) between inner tube and outer tube.