阅读说明：本技术 一种带有预冷模块的集中式室外机 (Centralized outdoor unit with precooling module ) 是由 程姗 许海进 常小芳 吴梦凡 周平 李培瀚 于 2020-07-03 设计创作，主要内容包括：本发明公开了一种带有预冷模块的集中式室外机,包括集中式室外机和室内机,所述的集中式室外机分别通过排气管和回液管与室内机相连形成循环管路,所述的集中式室外机包括冷凝器和预冷装置,所述的预冷装置内设有制冷剂管路,制冷剂管路的一端与室内机连接,另一端与冷凝器连接。本发明的预冷装置与V型冷凝器互为备份,优先使用预冷装置冷却,使风机减少工作,达到节电、减少磨损、降低噪音的目的,机组节能率高达25％以上,降低热岛效应,解决机组夏季高温高压报警隐患,延长机组寿命,减少维护成本,提高机组制冷效果,在冬季,预冷装置可产生热水,作为热回收热水,供生活热水使用。(The invention discloses a centralized outdoor unit with a precooling module, which comprises a centralized outdoor unit and an indoor unit, wherein the centralized outdoor unit is respectively connected with the indoor unit through an exhaust pipe and a liquid return pipe to form a circulating pipeline, the centralized outdoor unit comprises a condenser and a precooling device, a refrigerant pipeline is arranged in the precooling device, one end of the refrigerant pipeline is connected with the indoor unit, and the other end of the refrigerant pipeline is connected with the condenser. The precooling device and the V-shaped condenser are mutually backed up, the precooling device is preferentially used for cooling, so that the work of the fan is reduced, the purposes of saving electricity, reducing abrasion and reducing noise are achieved, the energy saving rate of the unit is up to more than 25%, the heat island effect is reduced, the hidden danger of high-temperature and high-pressure alarm of the unit in summer is solved, the service life of the unit is prolonged, the maintenance cost is reduced, the refrigerating effect of the unit is improved, and in winter, the precooling device can generate hot water to be used as heat recovery hot water for domestic hot water.)

1. The centralized outdoor unit with the precooling module is characterized by comprising a centralized outdoor unit (10) and an indoor unit (20), wherein the centralized outdoor unit (10) is connected with the indoor unit (20) through an exhaust pipe (6) and a liquid return pipe (7) respectively to form a circulating pipeline, the centralized outdoor unit (10) comprises a condenser (2) and a precooling device (3), a refrigerant pipeline is arranged in the precooling device (3), one end of the refrigerant pipeline is connected with the indoor unit (20), and the other end of the refrigerant pipeline is connected with the condenser (2).

2. The outdoor unit with a pre-cooling module of a centralized type according to claim 1, wherein the pre-cooling device (3) is installed at the front section of the condenser (2).

3. The outdoor unit with pre-cooling module of claim 1, wherein the refrigerant pipeline comprises an exhaust pipe (6) and an inlet pipe (8).

4. A centralized outdoor unit with pre-cooling module as set forth in claim 1 or 2, characterized in that said pre-cooling device (3) is connected to the indoor unit (20) through the exhaust pipe (6).

5. A centralized outdoor unit with pre-cooling module according to claim 1 or 2, characterized in that the pre-cooling device (3) is connected to the condenser (2) through a liquid inlet pipe (8).

6. The outdoor unit with pre-cooling module of claim 1, wherein the condenser (2) is a V-type condenser.

7. The outdoor unit with pre-cooling module of a centralized type of unit of claim 6, wherein the top of the V-shaped condenser is provided with an outdoor fan (1).

8. The outdoor unit of claim 1 or 2, wherein the pre-cooling device (3) further comprises a water pipe, and the water pipe comprises a cooling water inlet pipe (4) and a cooling water outlet pipe (5).

9. The outdoor unit with pre-cooling module of a centralized type as set forth in claim 8, wherein the cooling water inlet pipe (4) and the cooling water outlet pipe (5) are connected to a cooling water unit of an external cooling tower.

Technical Field

The invention relates to an outdoor unit, in particular to a centralized outdoor unit with a precooling module.

Background

In the mobile internet era, with the outbreak of head internet application, cloud computing application is concentrated to the great head of the industry, and large-scale companies in the industries such as operators, the internet, cloud service providers and the like have been in dispute to build large-scale cloud data centers and provide services such as public clouds, private clouds and the like. Along with the construction of data centers, the requirements for air conditioners in machine rooms, especially the requirements for energy conservation and consumption reduction, are more and more remarkable. The energy consumption of the data center exceeds 2 percent of the global energy consumption, the operation cost is reduced, and the energy utilization rate is improved. The guidance comments of the Ministry of industry and belief about strengthening the construction of the green data center indicate that: leading large and very large data center designs is not more efficient than 1.4 in power usage. Beijing, Shanghai, Shenzhen, etc. also successively put forward stricter requirements for PUE values in data center construction. Ordinary air-cooled air conditioners can not meet the requirements of more rigorous PUE of machine rooms, and the requirements of air conditioner products of efficient centralized machine rooms are more and more urgent.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a centralized outdoor unit with a precooling module, which can meet the harsh requirements of a machine room.

The technical scheme is as follows: the outdoor unit is connected with the indoor unit through an exhaust pipe and a liquid return pipe to form a circulation pipeline, the outdoor unit comprises a condenser and a precooling device, a refrigerant pipeline is arranged in the precooling device, one end of the refrigerant pipeline is connected with the indoor unit, and the other end of the refrigerant pipeline is connected with the condenser.

The pre-cooling device is arranged at the front section of the condenser.

The refrigerant pipeline comprises an exhaust pipe and a liquid inlet pipe.

The precooling device is connected with the indoor unit through an exhaust pipe.

The precooling device is connected with the condenser through a liquid inlet pipe.

The condenser is a V-shaped condenser.

The top of the V-shaped condenser is provided with an outdoor fan, so that outdoor air passes through the V-shaped condenser from bottom to top.

The pre-cooling device is internally provided with a water pipe, and the water pipe comprises a cooling water inlet pipe and a cooling water outlet pipe.

And the cooling water inlet pipe and the cooling water outlet pipe are connected with a cooling water unit of an external cooling tower.

Has the advantages that: 1) the precooling device and the V-shaped condenser are mutually backed up; 2) the precooling device is preferentially used for cooling, so that the work of the fan is reduced, and the aims of saving electricity, reducing abrasion and reducing noise are fulfilled; 3) the energy saving rate of the unit is up to more than 25%; 4) the heat island effect is reduced, the hidden danger of high-temperature and high-pressure alarm of the unit in summer is solved, the service life of the unit is prolonged, and the maintenance cost is reduced; 5) the working pressure of the outdoor air-cooled condenser is reduced, and the mechanical noise and the air flow noise of the outdoor unit are reduced; 6) the refrigeration effect of the unit is improved, and the call of the state department on energy conservation and emission reduction is met; 7) in winter, the precooling device can generate hot water which is used as heat recovery hot water for domestic hot water.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, the outdoor unit 10 of the present invention includes a V-shaped condenser 2 and a pre-cooling device 3, the V-shaped condenser 2 is arranged in a V-shape as a whole, and an outdoor fan 1 is disposed on the top of the V-shaped condenser 2, so that outdoor air passes through the V-shaped condenser 2 from bottom to top. The pre-cooling device 3 is positioned at the front section of the V-shaped condenser 2, exhaust gas from the indoor unit 20 enters the pre-cooling device 3 through the exhaust pipe 6, refrigerant enters the liquid inlet pipe 8 of the V-shaped condenser after being cooled, is further cooled and condensed in the V-shaped condenser 2, and finally is discharged out of the V-shaped condenser 2 through the liquid return pipe 7 and enters the indoor unit 20. The outdoor unit 10 is connected to the indoor unit 20 through two pipes, i.e., an exhaust pipe 6 and a liquid return pipe 7, to form a circulation pipe.

The precooling device 3 is externally connected with two groups of pipelines, one group of pipelines is a refrigerant pipeline and comprises an exhaust pipe 6 and a liquid inlet pipe 8, one end of the refrigerant pipeline is connected with the indoor unit 20 through the exhaust pipe 6, and the other end of the refrigerant pipeline is connected with the V-shaped condenser 2 through the liquid inlet pipe 8; the other group is a water pipe pipeline which comprises a cooling water inlet pipe 4 and a cooling water outlet pipe 5, and the cooling water inlet pipe 4 and the cooling water outlet pipe 5 are connected with a cooling water unit of an external cooling tower.

The refrigerating system of the invention is provided with two cooling modes of a precooling device 3 cooling and a V-shaped condenser 2 cooling. High-pressure refrigerant gas discharged from an indoor compressor is firstly cooled by a precooling device 3, so that the refrigerating pressure entering a V-shaped condenser 2 is lower than the starting pressure of a fan of an air-cooled condenser in an outdoor fan 1, the fan of the air-cooled condenser does not run, the outdoor fan 1 is reduced in work, and the purposes of saving electricity, reducing abrasion and reducing noise are achieved; when the precooling device 3 is not enough to provide the cooling heat exchange quantity of the unit, the pressure of the refrigerating system is gradually increased to reach the starting pressure of the fan of the air-cooled condenser, and the fan of the air-cooled condenser is automatically started to start heat dissipation.