CN204902068U - Divide ionization computer lab air conditioning unit - Google Patents

Abstract

The utility model discloses a separated machine room air conditioner unit, which comprises a first box body and a second box body, the first box body includes a heat exchanger section and a refrigeration component section, and the second box body includes a fan section; The first box body and the second box body are arranged separately and connected by bolts and electrical connecting wires. Compared with the prior art, the utility model separates the unit body of the heat exchanger section and the refrigeration accessory section from the fan section, which is convenient for transportation, installation and maintenance, and this separate structure moves the fan section out of the air conditioning unit , more space inside the air conditioner can increase the heat exchange area of the heat exchanger, the air flow inside the air conditioner is smooth, and the air resistance of the air duct is reduced, so that the heat transfer capacity of the unit can be greatly improved, thus making the entire unit The coefficient of performance has been greatly improved.

Description

A separate machine room air conditioner unit

technical field

The utility model relates to an air conditioner unit for a machine room, in particular to a separated high-efficiency machine room air conditioner unit.

Background technique

With the development of my country's information technology and the needs of social progress, there are more and more applications for information equipment rooms such as control centers, computer rooms, network computer rooms, and program-controlled computer rooms (hereinafter referred to as "data centers"). Controlling the indoor temperature, humidity and cleanliness of these computer rooms is the prerequisite to ensure the normal operation of the equipment. At present, there are three main types of data center air-conditioning system solutions: direct evaporative air-cooled computer room air-conditioning solutions, direct evaporative water-cooled computer room air-conditioning solutions, and chilled water-type computer room air-conditioning terminal solutions.

With the continuous development of technology and business, and the advent of the 4G era, more and more communication equipment rooms will be built, and the power consumption and heat generation of the equipment in the equipment room will increase. It accounts for more than 40% of the power consumption of the entire computer room. In response to the national call for energy conservation and emission reduction, communication operators have carried out a lot of pilot work in exploring the optimization of airflow organization in computer rooms, and actively invested in the research and application of precise air supply systems in communication computer rooms. Certain effects and progress have been made in reducing air-conditioning energy consumption. From the perspective of energy saving and cooling efficiency, the form of air supply will be based on the precise air supply of down-supply air conditioners in the future.

Downflow chilled water type computer room air conditioners currently in mainstream use can be roughly divided into three categories. The forward-inclining centrifugal fan sends air downward, the backward-inclining centrifugal fan sends air downward, and the backward-inclining centrifugal fan sinks air. Forward inclined centrifugal fans are generally driven by belt pulleys, so there will be belt wear. On the other hand, forward-leaning fans are less efficient. Therefore, in recent years, forward-leaning centrifugal fans have been used less and less in the field of computer room air conditioning. When the sunken backward centrifugal fan unit leaves the factory, the installation position of the fan is similar to that of the downward air supply, and is placed on the floor of the unit; while in the machine room, the fan can be sunk under the static floor of the machine room. Compared with the ordinary down-flow fan unit, due to the sinking of the fan unit, the resistance of the unit is smaller. Under the same air volume condition, the power consumption of the fan is reduced. increase.

Due to the limitations of China's transportation industry and the height limit of data center floors, the height of computer room air conditioners in the industry generally does not exceed 2 meters. Computer room air conditioners are usually designed with a three-stage structure, namely the fan section, heat exchanger section and refrigeration accessories section. As the data center raised floor is more and more widely used, the height of the static floor of the new data center is getting higher and higher, and the height of the static floor of many new computer rooms is as high as 1 meter. Optimizing the structure to improve refrigeration performance is the subject of this utility model research.

Utility model content

Purpose of the invention: The purpose of this utility model is to provide a separated machine room air conditioner unit, which optimizes the structure under the height limit of the existing machine room air conditioner and improves the cooling performance.

Technical solution: In order to achieve the above-mentioned purpose of the invention, the utility model adopts the following technical solution:

A separated machine room air conditioner unit, comprising a first box body and a second box body, the first box body includes a heat exchanger section and a refrigeration component section, the second box body includes a fan section; the first box body The body and the second box body are arranged separately and connected by bolts and electrical connecting wires.

In a specific embodiment, the second box is located below the first box, and the heat exchanger section adopts an A-type arrangement.

In a specific embodiment, the second box is located above the first box, and the heat exchanger sections are arranged in a V shape.

In a specific embodiment, the first box is located above the static floor of the computer room, and the second box is located below the static floor of the computer room.

Further, the second box body also includes a support section located below the fan section, and the height of the support section is customized or adjusted according to the height of the electrostatic floor of the machine room.

Further, the bottom plate of the first box body is provided with a regular hexagonal connection fixing hole, and an electrical connection relief hole, and the top plate of the second box body is provided with a circular connection fixing hole, and the electrical connection fixing installation hole.

Further, the electrical connection between the first box and the second box is connected by an aviation plug.

Further, the heat exchanger section includes two sets of coils of chilled water coils and compressor coils, the two sets of coils are arranged oppositely, and the tube plate between the compressor coils and the chilled water coils is composed of several Rivets hold it in place.

Beneficial effects: Compared with the prior art, the separation machine room air-conditioning unit of the utility model breaks the traditional concept, and separates the unit body of the heat exchanger section and the refrigeration accessories section from the fan section. Due to the transportation height limit, the two sections The structure is assembled and transported separately, and combined in the data center. This structural form of separating the upper and lower boxes is convenient for transportation, installation and maintenance. At the same time, the utility model considers that the main factors affecting the refrigeration performance of the chilled water type machine room air conditioner are the air volume and the heat exchange area of the heat exchange coil. This separate structure removes the fan section from the inside of the air conditioner unit, and more air conditioners inside the air conditioner The space makes the heat exchange area of the heat exchanger increase, the air flow inside the air conditioner is organized smoothly, and the air resistance of the air duct is reduced, so that the heat exchange of the unit can be greatly improved, so that the performance coefficient of the entire unit has a large increase. improve.

Description of drawings

Fig. 1a is a front view of Embodiment 1 of the present utility model.

Fig. 1b is a schematic diagram of the internal structure of Embodiment 1 of the present utility model.

Fig. 1c is a schematic diagram of the bottom structure of the first box body in Embodiment 1 of the present utility model.

Fig. 1d is a schematic diagram of the top structure of the second box in Embodiment 1 of the present invention.

Fig. 2a is a front view of Embodiment 2 of the present utility model.

Fig. 2b is a schematic diagram of the internal structure of Embodiment 2 of the present utility model.

Fig. 3a is a front view of Embodiment 3 of the present utility model.

Fig. 3b is a schematic diagram of the internal structure of Embodiment 3 of the present utility model.

Fig. 3c is a schematic structural view of the heat exchanger section of Embodiment 3 of the present invention.

Detailed ways

Below in conjunction with specific embodiment, further illustrate the utility model, should be understood that these embodiments are only used for illustrating the utility model and are not intended to limit the scope of the utility model, after having read the utility model, those skilled in the art understand the utility model Modifications in various equivalent forms fall within the scope defined by the appended claims of the present application. In the case of no conflict, the technical features in the technical solutions of the following embodiments may be combined to form a new technical solution.

Example 1

As shown in Figures 1a and 1b, a separated machine room air conditioner unit disclosed in Embodiment 1 of the present utility model is a downflow chilled water type machine room air conditioner unit, which is divided into a first box H1 and a second box H2. Among them, part H1 includes electrical control section H1-1, heat exchanger section H1-2 and refrigeration component section H1-3, and part H2 includes centrifugal fan section H2-1 and support section H2-2. In a data center with an elevated static floor, the H1 part is placed above the static floor, and the H2 part is placed below the static floor. During installation, the static floor in the corresponding space of the data center is removed. The height of the H2 part can be customized according to the height of the static floor. That is, the height of the support section H2-2 is adjusted, the fan section H2-1 is located above the support section H2-2, and the heat exchanger section adopts an A-type layout. The electrical control section H1-1 is used to control the air conditioner unit, so that the air conditioner operates the functions of cooling, heating, dehumidification, and humidification according to the temperature and humidity status of the data center.

The first box body H1 and the second box body H2 are detachably connected by bolts and electrical connecting wires, as shown in Figure 1c and 1d, the bottom plate of H1 is a hemmed structure with reinforcing ribs, for 3 groups of air conditioners The machine unit has 8 regular hexagonal connection fixing holes 11 on the lower part of the bottom plate, which are used to connect with H2; there are also 3 electrical connection relief holes 12 on the bottom plate, which are used for quick connectors for H2 fan wiring Make way. Correspondingly, the top plate of H2 has 8 circular connection and fixing holes 13 corresponding to the bottom plate of H1, and has 3 electrical connection and fixing holes 14 for fan quick connector (aviation plug).

When the unit leaves the factory, rivet nuts are installed on the connecting and fixing holes 11 of the bottom plate of H1, and when fixed on site, H2 is fixed on the rivet nuts on the bottom plate of H1 with bolts. The electrical connection between the first box H1 and the second box H2 is only the connecting wire of the fan, including the fan power line and the control line. The electrical connection of the two parts adopts the form of aviation plug for quick connection. For example, there is a connection line of a female plug in H1, and a male plug is fixed on the top plate of H2. When connecting on site, you only need to quickly connect the female plug in H1 to the male plug fixed on H2 through the relief hole on the bottom plate. This connection method is convenient and fast, and is convenient for installation and maintenance.

Taking the chilled water-type computer room special air conditioner of an IDC project in Shanghai as an example, the required technical conditions are as follows: the external static pressure is greater than 50Pa; the indoor return air temperature is 30°C, and the relative humidity is 30%RH; the chilled water inlet and outlet temperature is 13/18°C , The units are equipped with two-way proportional control valves; the panel can display the temperature of the air supply and return, as well as the temperature of the chilled water, water pressure and other parameters.

Aiming at the specific requirements of this project, combined with the physical conditions of the high static pressure floor on site, the separation air supply scheme of the embodiment of the utility model has been made into a series of conventional models with downward air supply and sinking air supply. Contrast test, through testing and comparing the performance comparison of units using down-flow air, down-flow air supply and separate air supply in the same unit frame. The design configuration and test results of the three models are summarized as follows.

The air volume of the separated air supply scheme is the largest, which is 21.7% and 12.2% higher than that of the downward air supply scheme and the sinking air supply scheme. This is because in the scheme of separating air supply, since the fan is placed outside the main body of the unit, on the one hand, the airflow organization inside the unit is optimized, so that the resistance on the wind side of the unit is reduced; The extra space is provided, so that the windward area of the heat exchange coil is increased, the face wind speed of the heat exchanger surface is reduced, and the wind side resistance passing through the heat exchange coil is also reduced. Therefore, the separated air supply scheme optimizes the airflow organization of the unit, increases the area of the heat exchange coil, reduces the resistance loss on the air side of the whole unit, and increases the air volume of the unit. According to the fan air volume and power, on the fan performance curve, the air duct resistance is reduced by 27.8% and 17.8% respectively.

The cooling capacity of the separated air supply scheme is the largest, and the cooling capacity is increased by 35% compared with the down-flow fan type, and the cooling capacity is increased by 24.7% compared with the down-flow fan type. On the one hand, the air volume of the unit has been greatly improved; on the other hand, since the fan of the separate air supply unit is placed outside the main body of the unit, the heat exchange area of the heat exchanger has been greatly increased. In the chilled water model, the increase of air volume and heat exchange area greatly affects the heat exchange efficiency of the heat exchanger, which makes the copper tube aluminum fin heat exchanger play a greater efficiency and makes the unit have a greater cooling capacity.

The performance coefficient (energy efficiency ratio) of the unit using the separated air supply scheme is the largest, and the performance coefficient is increased by 25% compared with the down-flow fan type, and the performance coefficient is increased by 18.6% compared with the down-flow fan type. Although the power of the fan is increased by using the separated air supply scheme, the specific power of the fan (specific power = fan power/air volume) is reduced at this time. The increase in air volume and coil heat transfer area makes the increase in cooling capacity far greater than the increase in fan power. As a result, the coefficient of performance of the entire unit is greatly improved.

In this embodiment, if the machine room does not have an electrostatic floor as a static plenum, and the clear height of the room is sufficient, the assembled air conditioner unit is placed directly on the floor.

Example 2

As shown in Figures 2a and 2b, a separated machine room air conditioner disclosed in Embodiment 2 of the present utility model is an upward air supply chilled water type machine room air conditioner, which differs from Embodiment 1 in that the air supply mode is different. The upper air supply structure is adopted, which is also divided into upper and lower parts, including the second box body H2 and the first box body H1, the upper part is the fan section H2, and the lower part is divided into the heat exchanger section H1-1 and the refrigeration unit. Component section H1-2, heat exchanger section adopts V-shaped arrangement. The air is returned from the mesh of the front door of the machine, and the air is discharged from the front end of the centrifugal fan. The connection mode between the first box H1 and the second box H2 is similar to that of Embodiment 1. Similarly, due to the enlarged heat exchange area, the air duct resistance is small, and the air volume increases, good cooling efficiency can also be achieved. There is no static floor in the computer room as a static pressure box, and the clear height of the room is sufficient. Using this embodiment can achieve good results.

Example 3

As shown in Figures 3a and 3b, a separated machine room air conditioner unit disclosed in Embodiment 3 of the present utility model is a room air conditioner unit with a double cold source down-supply fan room, which is also divided into the first box H1 and the second box H2. Part, the upper part includes heat exchanger section H1-1 and refrigeration component section H1-2, wherein, heat exchanger section H1-1 includes two sets of coils of chilled water coil 32 and compressor coil 31, and two sets of coils The tubes are arranged facing each other, and the tube plate between the compressor coil 31 and the chilled water coil 32 is fixed as a whole by several rivets. Two sets of coils are connected to pipelines from each end to save space. The lower part includes fan section H2-1 and support section H2-2. Compared with Example 1, Example 3 has an additional set of compressor refrigeration system, and the heat exchanger is placed in a different way from Example 1. In Example 1, the heat exchanger facing the front of the machine is arranged vertically, and this example is horizontal. Overall layout, this layout method has fewer pipelines in the dual cold source air conditioner, saving layout space, smooth air flow in the air duct, and small wind resistance. In this embodiment, the compressor refrigerating system and the chilled water refrigerating system are mutually backed up, and when one refrigerating system fails, it will automatically switch to the other system. The same thing as the above-mentioned embodiment 1 is that the whole machine is divided into two sections for the separated structure. Similarly, due to the enlarged heat exchange area, the air duct resistance is small, and the air volume increases, good cooling efficiency can also be achieved.

Example 4

A separated machine room air conditioner unit disclosed in Embodiment 4 of the utility model is a room air conditioner unit with a double cooling source and an upward air supply fan. The difference from Embodiment 3 is that the air supply and return methods are different. There are two parts, the upper part is the fan section, and the lower part includes the heat exchanger section and the refrigeration component section. The heat exchanger section includes two sets of coils, the chilled water coil and the compressor coil. This embodiment is applicable to a data center that does not have an electrostatic floor as a static plenum in a computer room and has sufficient clear room height.

Claims (8)

1. a separating purification air conditioner in machine room unit, is characterized in that, comprises the first casing and the second casing, and described first casing comprises heat exchanger section and refrigeration part section, and described second casing comprises fan section; Described first casing and the second casing split are arranged, and are connected with electrical cable by bolt.

2. separating purification air conditioner in machine room unit according to claim 1, it is characterized in that, described second casing is positioned at the below of the first casing, and described heat exchanger section adopts A type to arrange.

3. separating purification air conditioner in machine room unit according to claim 1, it is characterized in that, described second casing is positioned at the top of the first casing, and described heat exchanger section adopts V-type to arrange.

4. separating purification air conditioner in machine room unit according to claim 2, is characterized in that, described first casing is positioned at above machine room electrostatic floor, and described second casing is positioned at below machine room electrostatic floor.

5. separating purification air conditioner in machine room unit according to claim 4, is characterized in that, described second casing also comprises the supporting section be positioned at below fan section, and the height of described supporting section is according to the height customization of machine room electrostatic floor or adjustment.

6. separating purification air conditioner in machine room unit according to claim 2, it is characterized in that, the base plate of described first casing is provided with regular hexagon and is connected and fixed hole, and electrical connection resigning hole, the top board of described second casing is provided with circle and is connected and fixed hole, and electrical connection fixed installation hole.

7. separating purification air conditioner in machine room unit according to claim 1, is characterized in that, described first casing and the electrical connection between the second casing adopt aviation plug to be connected.

8. the separating purification air conditioner in machine room unit according to above any one claim, it is characterized in that, described heat exchanger section comprises chilled water coil pipe and compressor coil pipe two groups of coil pipes, two groups of coil pipe subtends are arranged, the tube sheet between described compressor coil pipe and chilled water coil pipe is fixed into entirety by some rivets.