KR102180190B1 - Constant temperature and constant humidity apparatus of rack structure - Google Patents

Abstract

The present invention relates to a constant temperature and humidity rack for computing equipment, and more particularly, to a rack for computing equipment provided with a cooling device capable of performing constant temperature and humidity control. According to the present invention, a constant temperature and humidity rack for computing equipment, includes: a rack housing in which an inner space for accommodating the computing equipment is formed; an evaporation unit that sucks air in the inner space of the rack housing and returns the air after heat exchange with a refrigerant; and a condensing unit to receive a compressed refrigerant from the evaporation unit and to exchange heat with external air. The evaporation unit includes: an evaporator fan to introduce air from the inner space through the indoor air inlet and to discharge air back to the inner space through the indoor air outlet; an evaporation coil provided on a path of the air in an inner space part from the indoor air inlet to the indoor air outlet to perform heat exchange between the refrigerant and the air in the inner space part, and provided in a state inclined at a predetermined angle with respect to the horizontal direction; a compressor that receives the refrigerant from the evaporation coil, compresses the refrigerant, and delivers the refrigerant to the condensing unit. The condensing unit may include a condensing coil to exchange heat with the refrigerant delivered from the compressor and the external air; and a condenser fan to introduce the external air such that the external air passes through the condensing coil.

Description

Constant temperature and constant humidity apparatus of rack structure for computing equipment

The present invention relates to a constant temperature and humidity rack for computing equipment, and more particularly, to a rack for computing equipment having a cooling device capable of constant temperature and humidity control.

Management of servers, storage, network equipment, etc. is very important today, where business processing speeds up due to computerization of all tasks and information throughput is increasing. These equipments were installed and managed in IDCs, computer rooms, and simple rooms such as offices or document warehouses while being stored in a rack structure.

In IDCs where rack structures are installed, computer rooms, simple rooms such as offices or document warehouses, a cooling and heating system is installed to maximize the cooling efficiency of equipment stored in the rack structure. It was difficult to manage temperature and humidity. In other words, because the equipment has a high calorific value, it is essential to manage temperature and humidity, but in the case of a cooling/heating system, humidity management is not possible. Therefore, a water supply pipe for humidity and humidity must be installed by adding additional equipment construction costs. In the case of piping, problems such as freeze and reverse flow occurred.

1 and 2 are schematic diagrams showing a conventional rack for computing equipment and a cooling device thereof, respectively. Referring to FIGS. 1 and 2, in the case of the conventional rack device 10p for computing equipment, a method of cooling and returning the air in the inner space portion S1 in the rack housing was used. In the case of such a device, the air in the inner space is cooled through the compressor 210p, the condensation coil 110p, and the evaporation coil 230p, and the exchanged outside air is discharged through the condenser fan 160p. In the case of such a rack device, it is a device that prevents temperature rise by simply cooling the heat generated in the rack, and it is impossible to control the humidity, so when the temperature drops, the humidity increases, and there is a problem such as frost formation on the glass window of the rack. There is no humidification function.

The present invention provides a rack device for computing equipment capable of cooling, dehumidifying, dehumidifying, and humidifying operations as well as cooling functions.

The constant temperature and humidity rack for computing equipment according to the present invention comprises: a rack housing in which an inner space for accommodating the computing equipment is formed; An evaporation unit that sucks air in the inner space of the rack housing and returns it after heat exchange with the refrigerant; And a condensing unit for receiving the compressed refrigerant from the evaporation unit and exchanging heat with outside air,

The evaporation unit may include an evaporator fan for introducing air from the inner space through an indoor air inlet and discharging air to the inner space through an indoor air outlet; An evaporation coil provided on the path of the air in the inner space part leading from the indoor air inlet to the indoor air outlet to perform heat exchange between the refrigerant and the air in the inner space part, and provided in a state inclined at a predetermined angle with respect to the horizontal direction; And a compressor that receives the refrigerant from the evaporation coil, compresses it, and delivers it to the condensing unit,

The condensing unit may include a condensing coil for heat-exchanging the refrigerant delivered from the compressor with outside air; And a condenser fan for introducing outside air to pass through the condensing coil.

In addition, a control unit that controls the evaporator fan to control the first control state in which the surface wind speed in the evaporation coil is 2.0 to 2.2 m/s and the second control state in which the surface wind speed in the evaporation coil is 1.5 to 2.0 m/s. It may include.

In addition, it may further include a damper for bypassing a certain amount of air directly to the evaporator fan side without passing through the evaporation coil from the indoor air inlet.

In addition, a control unit for controlling the evaporator fan and the damper to a third control state, wherein in the third control state, the surface wind speed in the evaporation coil is 1.0 to 1.5 m/s, and the opening rate of the damper is It may be 50% to 100%.

In addition, it may further include a; water supply unit for spraying water to the evaporation coil.

In addition, it includes a control unit for controlling the evaporator fan, the damper, and the water supply unit to a fourth control state, wherein in the fourth control state, the surface wind speed in the evaporation coil is 1.5 to 2.0 m/s, and the damper The opening rate is 20% to 50%, and water can be controlled to be supplied from the water supply unit.

In addition, it may include a; a drain plate for collecting water falling from the evaporation coil.

In addition, the condensing part may be provided at an upper end of the rack housing, and the evaporation part may be provided at a lower end of the rack housing.

In addition, the evaporator fan may include a brushless DC motor.

In addition, it may include an expansion valve to control the opening rate to control the amount of refrigerant introduced into the evaporation coil.

Also, the refrigerant may be air.

In the present invention, not only a cooling function but also a cooling dehumidification, dehumidification, and humidification operation are possible using a damper and a water supply unit to perform constant temperature and humidity control.

1 and 2 are schematic diagrams showing a conventional rack for computing equipment and a cooling device thereof, respectively.
3 is a schematic diagram showing a constant temperature and humidity rack for computing equipment according to an embodiment of the present invention.
4 is a schematic diagram showing a cooling device of a constant temperature and humidity rack for computing equipment according to an embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Unless there is a specific definition or reference, terms indicating directions used in this description are based on the state indicated in the drawings. In addition, the same reference numerals refer to the same members throughout each embodiment. On the other hand, each component displayed in the drawings may be exaggerated in thickness or dimensions for convenience of description, and does not mean that it should be configured in a ratio between the corresponding dimensions or components.

A constant temperature and humidity rack for computing equipment and a cooling device included therein according to an embodiment will be described with reference to FIGS. 3 and 4. Figure 3 is a schematic diagram showing a constant temperature and humidity rack for computing equipment according to an embodiment of the present invention, Figure 4 is a schematic diagram showing a cooling device of the constant temperature and humidity rack for computing equipment according to an embodiment.

Referring to FIG. 3, the cooling apparatus according to the present embodiment includes a condensing unit 100 and an evaporating unit 200.

The rack housing 11 is formed with an inner space (S1) for accommodating various computing equipment such as servers and hubs. The condensing part 100 is provided in the upper part of the rack housing 11, and the evaporating part 200 is provided in the lower part.

The evaporation part 200 sucks air from the inner space part S1 of the rack housing 11 and returns it after heat exchange with the refrigerant. The condensing unit 100 receives the compressed refrigerant from the evaporation unit 200 and exchanges heat with outside air.

In this way, the evaporation unit 200 and the condensation unit 100 are separated and provided independently at the lower and upper portions of the rack housing 11, respectively, thereby making it easier to discharge the outside air with an elevated temperature. It can be easily processed and utilized.

Referring to FIG. 4, the evaporation unit 200 includes an evaporator fan 260, an evaporation coil 230, and a compressor 210.

The evaporator fan 260 introduces air from the inner space through an indoor air inlet that communicates with the inner space of the rack housing, performs heat exchange, and then passes air into the inner space through the indoor air outlet that communicates with the inner space of the rack housing. It functions to discharge again.

Meanwhile, the evaporator fan 260 may be provided with a brushless DC motor (BLDC motor) to provide rotational force. The evaporator fan 260 allows the cooling performance to be adjusted by using a speed-controllable motor.

The evaporation coil 230 forms a refrigerant circulation structure together with the compressor 210 and the condensation coil 110. The evaporation coil 230 is provided on the path of the air of the inner space part leading from the indoor air inlet to the indoor air outlet, that is, the path leading from the first space part SP1 to the second space part SP2, and the refrigerant and the inner space Heat exchange between the air introduced from the unit is performed. In this case, air may be used as the refrigerant.

In addition, the evaporation coil 230 is provided in a state that is inclined at a certain angle, about 30 degrees to 40 degrees with respect to the horizontal direction, thereby improving heat exchange efficiency, and allowing condensed water or water supplied from the water supply unit 280 to be easily collected. I can. The water supply unit 280 supplies water from the outside and supplies water to the evaporation coil 230 through a separate nozzle or the like.

The damper 290 bypasses the air by a predetermined amount directly from the first space part SP1 to the second space part SP2 without passing through the evaporation coil 230. The damper 290 adjusts the amount of air bypassed by adjusting the opening rate.

The drain plate 295 collects water falling from the evaporation coil 230.

The compressor 210 receives the refrigerant from the evaporation coil 230, compresses it, and delivers it to the condensing unit 100.

The condensing unit 100 includes a condenser fan 160 and a condensing coil 110. The condensation coil 110 exchanges heat with the refrigerant delivered from the compressor 210 and outside air. The condenser fan 160 allows outside air to flow through the condensing coil 110.

On the other hand, the constant temperature and humidity rack according to the present embodiment includes a separate control unit (not shown).

The control unit mainly controls the cooling device according to the present embodiment in four control states.

First, in the first control state, the control unit controls the evaporator fan 260 so that the surface wind speed in the evaporation coil 230 is 2.0 to 2.2 m/s. In the first control state, it is controlled to the cooling operation state. At this time, the wind speed is 80 to 90% (the evaporation coil surface wind speed is 2.0 to 2.2 m/s), and the opening rate of the damper is set to 0%.

In the second control state, the evaporator fan 260 is controlled so that the surface wind speed in the evaporation coil 230 is 1.5 to 2.0 m/s. In the second control state, the cooling dehumidification operation is performed, and the average wind speed in the evaporation coil is relatively lowered to control the amount of dehumidification and the amount of condensed water. The wind speed by the evaporator fan is 70 to 80% (the surface wind speed of the evaporation coil is 1.5 to 2.0m/s), and the damper opening rate is set to 0%.

In the third control state, the evaporator fan 260 and the damper 290 are controlled so that the surface wind speed in the evaporating coil is 1.0 to 2.0 m/s, and the opening rate of the damper is 50% to 100%. In the third control state, dehumidification operation is performed, minimizing re-evaporation of condensed water, and high humidity problems caused by re-evaporation can be solved. By buffering the excess cooling performance with the damper 290, the temperature is prevented from lowering more than necessary. The evaporator fan's operating wind speed is 60~70% (the evaporation coil surface wind speed 1.0~1.5m/s).

In the fourth control state, the evaporator fan 260, the damper 290, and the water supply unit 280 are controlled so that the surface wind speed in the evaporation coil 230 is 1.5 to 2.0 m/s, and the opening rate of the damper 290 is It is 20% to 50%, and water is supplied from the water supply. In the fourth control state, the humidification operation is performed, and the humidification operation is enabled by supplying water while the flow rate is reduced. The evaporator fan's operating wind speed is 60~70% (the evaporation coil surface wind speed 1.5~2.0m/s).

Although the preferred embodiment of the present invention has been described above, the technical idea of the present invention is not limited to the above-described preferred embodiment, and may be variously implemented within the scope not departing from the technical idea of the present invention embodied in the claims. have.

10: constant temperature and humidity rack
100: condensation part
110: condensing coil
160: condenser fan
200: evaporation unit
210; compressor
230: evaporation coil
240: expansion valve
280: water supply
295: drain plate

Claims (11)

A rack housing in which an inner space for accommodating computing equipment is formed;
An evaporation unit that sucks air in the inner space of the rack housing and returns it after heat exchange with the refrigerant; And
Containing; a condensing unit for receiving the compressed refrigerant from the evaporation unit to heat exchange with outside air,
The evaporation unit,
An evaporator fan for introducing air in the inner space portion through an indoor air inlet and discharging air back to the inner space portion through an indoor air outlet;
An evaporation coil provided on a path of the air in the inner space portion leading from the indoor air inlet to the indoor air outlet to perform heat exchange between the refrigerant and the air in the inner space;
A damper for bypassing a certain amount of air directly from the indoor air inlet to the evaporator fan without passing through the evaporation coil; And
Comprising; a compressor that receives the refrigerant from the evaporation coil, compresses it, and delivers it to the condensing unit,
The condensation part,
A condensation coil for exchanging heat with the refrigerant delivered from the compressor and outside air; And
Including; a condenser fan for introducing outside air to pass through the condensing coil,
The condensing part is provided at the upper end of the rack housing, the evaporation part is provided at the lower end of the rack housing,
A control unit for controlling the evaporator fan to control the first control state in which the surface wind speed in the evaporation coil is 2.0 to 2.2 m/s and the second control state in which the surface wind speed in the evaporation coil is 1.5 to 2.0 m/s. Includes,
And a control unit controlling the evaporator fan and the damper to a third control state, wherein in the third control state, the surface wind speed in the evaporation coil is 1.0 to 1.5 m/s, and the opening rate of the damper is 50 % To 100%,
Further comprising a; a water supply unit for spraying water to the evaporation coil,
The evaporation coil is provided in a state inclined at a certain angle with respect to the horizontal direction,
And a control unit for controlling the evaporator fan, the damper, and the water supply unit to a fourth control state,
In the fourth control state, the surface wind speed in the evaporation coil is 1.5 to 2.0 m/s, the opening degree of the damper is 20% to 50%, and water is supplied from the water supply part.
Includes; a drain plate for collecting water falling from the evaporation coil,
The evaporator fan has a brushless DC motor,
It includes an expansion valve for controlling the amount of refrigerant introduced into the evaporation coil by controlling an opening rate,
The refrigerant is air,
The drain plate is connected to a lower side of the inclined evaporation coil to collect water that is sprayed onto the evaporation coil and then falls . delete delete delete delete delete delete delete delete delete delete

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