CN101387479A - A compound condenser heat pipe cooling unit - Google Patents

Abstract

A compound condenser heat pipe cooling unit is composed of an evaporator, a gas main pipe, an air-cooled condenser and a liquid main pipe. Its technical feature is that an evaporative condenser is connected in parallel on one side of the air-cooled condenser to form a compound condenser. The addition of the evaporative condenser improves the heat transfer performance of the condenser, enables the unit to still operate under high outdoor temperature conditions, extends the operating time of the unit, and improves the energy-saving effect of the unit. Especially in areas with low air humidity and high cold energy contained in the air, the energy saving effect will be more obvious. The invention can not only be used as a special machine for a mobile base station, a network or a telephone server room, but also be used as an auxiliary cooling device for a high-temperature cold storage and other high-heating spaces. The invention can make full use of cold energy in air with low outdoor temperature and low moisture content, and has good energy-saving effect.

Description

A compound condenser heat pipe cooling unit

technical field

The invention relates to a composite condenser heat pipe cooling unit, which is especially suitable for cooling and cooling of mobile communication base stations, network or telephone server rooms, high-temperature cold storage and other high-heating spaces, and belongs to the field of refrigeration and air-conditioning equipment.

Background technique

In recent years, with the rapid development of communication technology and computer technology, the use of communication equipment base stations as communication transmission hubs and computer server rooms as data processing centers has become more and more popular. Communication base stations and server rooms are spaces with high internal heat sources, and the internal electronic equipment generates a large amount of heat, which can reach 200-1500W/m ² . In order to maintain the allowable operating temperature of the equipment, the computer room needs to use air-conditioning equipment to discharge the indoor heat to the outside. . Since this type of machine room generally operates continuously throughout the year, there is a huge sensible heat load throughout the year, so the air conditioner will operate under cooling conditions throughout the year, resulting in a huge air conditioning energy consumption. According to statistics, this type of 25% to 50% of the electricity in the computer room is consumed by air conditioning equipment. In addition, since the air-conditioning equipment in the computer room is selected according to the cooling load in summer, when the outdoor temperature is low in winter, the indoor cooling load decreases, which will cause the compressor to start and stop frequently, resulting in an increase in the start-stop loss of the refrigeration equipment, and the machine A series of problems such as shortened life span. In fact, the safe operating environment temperature of electronic equipment used in general computer rooms is below 35-40°C, and the outdoor temperature in most areas of our country is lower than this value throughout the year, so it is appropriate to use outdoor natural cooling sources to remove sensible heat from the computer room , Maintaining the environmental state in the computer room can greatly reduce the energy consumption of this type of computer room.

The air-cooled separated heat pipe cooling system is considered to be the best auxiliary cooling equipment for base stations using natural cooling capacity, and its schematic diagram is shown in Figure 1. When the outdoor temperature is low enough, the circulating working medium in the evaporator is heated and evaporated into gas in the machine room, enters the condenser through the gas main pipe, and condenses into liquid in the condenser, and then returns to the evaporator through the liquid main pipe, thus fully The outdoor natural cooling is utilized to realize the transfer of indoor heat to the outdoor.

Although the separated heat pipe shown in Figure 1 realizes the utilization of outdoor natural cooling capacity, it can realize heat dissipation and cooling inside the computer room at a relatively low energy consumption under certain outdoor temperature conditions. However, due to the limited heat transfer coefficient of the air-cooled condenser, unless the condenser area is large, the outdoor temperature of the heat pipe must reach a low level, which greatly limits the use time of the heat pipe and restricts Its energy-saving effect. Further increasing the heat transfer effect of the separated heat pipe outdoor condenser will obviously improve the overall heat transfer performance of the heat pipe, prolong the service time of the heat pipe, and improve its energy-saving effect.

Contents of the invention

Aiming at the defects in the prior art, the present invention proposes a compound condenser heat pipe cooling unit to improve the energy saving performance of the separated heat pipe as auxiliary cooling equipment in the machine room.

Technical scheme of the present invention is as follows:

A composite condenser heat pipe cooling unit, comprising an evaporator 2, a gas main pipe 4, a condenser and a liquid main pipe 6, the evaporator 2 contains an evaporator fan 9 and an evaporator heat exchanger 5, and the condenser is air-cooled Condenser 1, the air-cooled condenser contains air-cooled condenser fan 10 and air-refrigerant heat exchanger 16; the evaporator 2, gas main pipe 4, air-cooled condenser 1 and liquid main pipe 6 in turn The connection constitutes a heat pipe cycle, which is characterized in that: one side of the air-cooled condenser 1 is connected in parallel with an evaporative condenser 3 to form a compound condenser, and the evaporative condenser 3 includes a water film-refrigerant heat exchanger 11, and the evaporative condenser Fan 14 and spray water collection device; The inlet of described water film-refrigerant heat exchanger 11 is connected with the inlet of gas main pipe 4 and air-refrigerant heat exchanger 16 respectively, and the outlet of water film-refrigerant heat exchanger is respectively connected with The liquid main pipe 6 is connected to the outlet of the air-refrigerant heat exchanger 16; the spray water collection device includes a water collection pan 12, a spray water pump 13 and a shower 15, and the water collection pan 12 is arranged on the water film-refrigerant medium The lower part of the heat exchanger 11 , the shower 15 is arranged on the upper part of the water film-refrigerant heat exchanger 11 , and the spray water pump 13 is arranged on the pipeline between the water collecting pan 12 and the shower 15 .

The second compound condenser heat pipe cooling unit provided by the present invention includes an evaporator 2, a gas main pipe 4, a condenser and a liquid main pipe 6, and the evaporator 2 contains an evaporator fan 9 and an evaporator heat exchanger 5, and the The evaporator 2, the gas main pipe 4, the condenser and the liquid main pipe 6 are connected in sequence to form a heat pipe cycle, which is characterized in that: the condenser adopts an evaporative condenser 3, and the evaporative condenser includes a water film-refrigerant heat exchanger 11 , the evaporative condenser fan 14 and the spray water collecting device, the inlet of the water film-refrigerant heat exchanger 11 is connected with the gas main pipe 4, and the outlet is connected with the liquid main pipe 6; the spray water collecting device includes a water collecting pan 12. Spray the water pump 13 and the shower 15, the water collecting pan 12 is arranged at the lower part of the water film-refrigerant heat exchanger 11, and the shower 15 is arranged at the upper part of the water film-refrigerant heat exchanger 11, The spray water pump 13 is arranged on the pipeline between the water collecting pan 12 and the shower 15 .

In the above two schemes, the gas pipe valve 7 and the liquid pipe valve 8 are respectively arranged on the gas main pipe 4 and the liquid main pipe 6, and the valves are manual valves, electromagnetic valves or electric control valves; the evaporator fan 9, air-cooled Condenser fan 10 and evaporative condenser fan 14 all adopt the combination of axial flow fan, centrifugal fan or two kinds of fans; The driving motor of the water pump 13 is a single-speed, multi-speed or stepless speed-regulating motor.

Compared with the prior art, the present invention has the following advantages and outstanding effects: the present invention improves the heat transfer performance of the condenser due to the addition of an evaporative condenser, so that the unit can still operate under the condition of high outdoor temperature, The operating time of the unit is extended, thereby improving the energy-saving effect of the unit to a certain extent. Especially in areas with low air humidity and high cold energy contained in the air, the improvement of the heat exchange effect of the evaporative condenser and the improvement of the overall performance of the unit will be more obvious.

The invention can not only be used as a special machine for machine rooms to cool down mobile base stations, network or telephone server rooms, but also be used as auxiliary cooling equipment for high-temperature cold storage and other high-heat-generating spaces. The invention can make full use of cold energy in air with low outdoor temperature and low moisture content, and has good energy-saving effect.

Description of drawings

FIG. 1 is a structural schematic diagram of an air-cooled separated heat pipe in the prior art.

Fig. 2 is a structural principle diagram of an embodiment disclosed by the present invention.

Fig. 3 is a structural principle diagram of another embodiment disclosed by the present invention.

The numbers and corresponding names of the components in Figures 1 to 3 are as follows: 1—air-cooled condenser; 2—evaporator; 3—evaporative condenser; 4—gas main pipe; 5—evaporator heat exchanger; 6—liquid Main pipe; 7—gas pipe valve; 8—liquid pipe valve; 9—evaporator fan; 10—air-cooled condenser fan; 11—water film-refrigerant heat exchanger; 12—water collecting tray; 13—spray water pump ; 14—evaporative condenser fan; 15—sprinkler; 16—air-refrigerant heat exchanger.

Detailed ways

Fig. 2 is a structural schematic diagram of an embodiment disclosed by the present invention, the unit includes an evaporator 2, a gas main pipe 4, a condenser and a liquid main pipe 6, and the evaporator 2 includes an evaporator fan 9 and an evaporator heat exchanger 5 , the condenser adopts an air-cooled condenser 1, which contains an air-cooled condenser fan 10 and an air-refrigerant heat exchanger 16; the evaporator 2, the gas main pipe 4, and the air-cooled condenser The condenser 1 and the liquid main pipe 6 are connected in sequence to form a heat pipe cycle, which is characterized in that: one side of the air-cooled condenser 1 is connected in parallel with an evaporative condenser 3 to form a composite condenser, and the evaporative condenser 3 includes a water film-refrigerant exchange Heater 11, evaporative condenser fan 14 and spray water collection device; the inlet of described water film-refrigerant heat exchanger 11 is connected with the inlet of gas main pipe 4 and air-refrigerant heat exchanger 16 respectively, water film- The outlet of the refrigerant heat exchanger is connected with the outlet of the liquid main pipe 6 and the air-refrigerant heat exchanger 16 respectively; The disc 12 is set on the lower part of the water film-refrigerant heat exchanger 11, the sprinkler 15 is set on the upper part of the water film-refrigerant heat exchanger 11, and the spray pump 13 is set between the water collecting pan 12 and the sprayer 15. On the pipeline between, the evaporative condenser fan 14 is arranged above or/and on the side of the sprayer 15.

Fig. 3 is the structural schematic diagram of another embodiment disclosed by the present invention, and this unit contains evaporator 2, gas main pipe 4, condenser and liquid main pipe 6, and described evaporator 2 contains evaporator fan 9 and evaporator heat exchanger 5. The evaporator 2, the gas main pipe 4, the condenser and the liquid main pipe 6 are sequentially connected to form a heat pipe cycle, which is characterized in that: the condenser adopts an evaporative condenser 3, and the evaporative condenser includes a water film-refrigerant Heat exchanger 11, evaporative condenser fan 14 and spray water collection device, the inlet of the water film-refrigerant heat exchanger 11 is connected to the gas main pipe 4, and the outlet is connected to the liquid main pipe 6; the spray water collection device Including a water collecting pan 12, a spray water pump 13 and a shower 15, the water collecting pan 12 is arranged at the lower part of the water film-refrigerant heat exchanger 11, and the sprayer 15 is arranged in the water film-refrigerant heat exchanger On the top of 11, the spray water pump 13 is arranged on the pipeline between the water collecting pan 12 and the shower 15, and the evaporative condenser fan 14 is arranged above or/and on the side of the shower 15.

In the above two schemes, the gas pipe valve 7 and the liquid pipe valve 8 are respectively arranged on the gas main pipe 4 and the liquid main pipe 6, and the valves are manual valves, electromagnetic valves or electric control valves; the evaporator fan 9, air-cooled Condenser fan 10 and evaporative condenser fan 14 all adopt the combination of axial flow fan, centrifugal fan or two kinds of fans; The driving motor of the water pump 13 is a single-speed, multi-speed or stepless speed-regulating motor.

Claims (8)

1. A composite condenser heat pipe cooling unit comprising an evaporator (2), a gas manifold (4), a condenser and a liquid manifold (6), and the evaporator (2) comprises an evaporator fan (9) and an evaporator Heat exchanger (5), described condenser adopts air-cooled condenser (1), and this air-cooled condenser contains air-cooled condenser fan (10) and air-refrigerant heat exchanger (16); Described The evaporator (2), the gas main pipe (4), the air-cooled condenser (1) and the liquid main pipe (6) are connected in sequence to form a heat pipe cycle, and it is characterized in that: one side of the air-cooled condenser (1) The parallel evaporative condenser (3) constitutes a composite condenser, and the evaporative condenser (3) includes a water film-refrigerant heat exchanger (11), an evaporative condenser fan (14) and a spray water collection device; The inlets of the water film-refrigerant heat exchanger (11) are respectively connected to the inlets of the gas main pipe (4) and the air-refrigerant heat exchanger (16), and the outlets of the water film-refrigerant heat exchanger are respectively connected to the liquid main pipe (6) and The outlet of the air-refrigerant heat exchanger (16) is connected; the water collecting device for spraying includes a water collecting pan (12), a spray water pump (13) and a shower (15), and the water collecting pan (12) It is arranged at the lower part of the water film-refrigerant heat exchanger (11), and the shower (15) is arranged at the upper part of the water film-refrigerant heat exchanger (11). 2. A compound condenser heat pipe cooling unit according to claim 1, characterized in that: gas pipe valves (7) and liquid pipe valves are respectively set on the gas main pipe (4) and liquid main pipe (6) (8), the valve is a manual valve, solenoid valve or electric regulating valve. 3. A compound condenser heat pipe cooling unit according to claim 1, characterized in that: the evaporator fan (9), the air-cooled condenser fan (10) and the evaporative condenser fan (14) are all Axial fans, centrifugal fans or a combination of both are used. 4. A compound condenser heat pipe cooling unit according to claim 1, characterized in that: the evaporator fan (9), the air-cooled condenser fan (10) and the evaporative condenser fan (14) and The driving motor of the spray water pump (13) is a single-speed, multi-speed or stepless speed-regulating motor. 5. A compound condenser heat pipe cooling unit, comprising an evaporator (2), a gas manifold (4), a condenser and a liquid manifold (6), the evaporator (2) comprising an evaporator fan (9) and an evaporator The heat exchanger (5), the evaporator (2), the gas main pipe (4), the condenser and the liquid main pipe (6) are connected in sequence to form a heat pipe cycle, and it is characterized in that: the condenser adopts an evaporative condenser ( 3), the evaporative condenser includes a water film-refrigerant heat exchanger (11), an evaporative condenser fan (14) and a spray water collection device, the inlet of the water film-refrigerant heat exchanger (11) is connected to The gas main pipe (4) links to each other, and the outlet links to each other with the liquid main pipe (6); the water collecting device for spraying includes a water collecting pan (12), a spray water pump (13) and a shower (15), and the water collecting pan (12) is arranged on the lower part of the water film-refrigerant heat exchanger (11), the sprayer (15) is arranged on the upper part of the water film-refrigerant heat exchanger (11), and the spray pump (13) is arranged on the collector On the pipeline between the water pan (12) and the shower (15). 6. A compound condenser heat pipe cooling unit according to claim 5, characterized in that: said gas main pipe (4) and liquid main pipe (6) are respectively provided with a gas pipe valve (7) and a liquid pipe valve ( 8), the valve is manual valve, solenoid valve or electric regulating valve. 7. A compound condenser heat pipe cooling unit according to claim 5, characterized in that: the evaporator fan (9), the air-cooled condenser fan (10) and the evaporative condenser fan (14) are all Axial fans, centrifugal fans or a combination of both are used. 8. A compound condenser heat pipe cooling unit according to claim 5, characterized in that: the evaporator fan (9), the air-cooled condenser fan (10) and the evaporative condenser fan (14) and The driving motor of the spray water pump (13) is a single-speed, multi-speed or stepless speed-regulating motor.

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