JP4446536B2 - Temperature stratified cooling system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temperature stratified cooling system for cooling a room with a high ceiling or a room with a ceiling behind such as a factory.
[0002]
[Prior art]
Conventionally, in a cooling system, an indoor unit arranged indoors and an outdoor unit arranged outside are connected by refrigerant pipes or chilled water pipes. It is returned to the room and cooled.
[0003]
FIG. 5 shows an indoor cooling system having a ceiling height of 5 m or more such as a one-story factory. In the figure, an indoor unit 51 is installed in the room 50, an outdoor unit 52 is installed outside the room, 52 is connected by refrigerant or cold water pipes 53 and 54, and the refrigerant or cold water cooled by exhaust heat on the outdoor unit 52 side is passed through the refrigerant or pipe 53 to the indoor unit 51 to exchange heat with room air. Alternatively, the air is returned to the outdoor unit 52 through the cold water pipe 54, and the cold air generated in the indoor unit 51 is guided to an appropriate location in the room 50 through the duct 55 and blown out from the outlet 56.
[0004]
[Problems to be solved by the invention]
In this cooling system, in order to cool the entire room, large-capacity indoor / outdoor units 51 and 52 are installed, and the cooling air is guided to the whole room by a duct 55 for cooling. It is arranged to be held at a height of about 2.5 m.
[0005]
However, since installation work of the duct 55 and equipment such as refrigerant or cold water piping are required, there is a problem that equipment costs increase and long-term construction is required.
[0006]
Accordingly, an object of the present invention is to provide a temperature stratified cooling system that solves the above-described problems and can cool a room in a factory or the like without requiring installation work of ducts and refrigerant pipes.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 is directed to an indoor cooling system having a ceiling height of 5 m or more, and a refrigeration cycle comprising a compressor, a condenser, a decompression device, and an evaporator is provided in the cooling body. built together, a condenser and condenser fan on top of the cooling machine body to place the evaporator and supply fan at the bottom, an air inlet provided in the cooling unit main body between the condenser and the evaporator, condenser The exhaust heat air discharge port is provided above the cooler body, the cool air blower outlet is provided below the cooler body of the evaporator to constitute the cooler , and the air intake port of the cooler is about 2.5 m above the floor. A large number of air conditioners are placed on the ceiling or the like so that the height of the air conditioner is as high as possible , and air is introduced from the air suction port between the condenser and the evaporator of the heat exchanger of the air conditioner body, and one of the air is discharged. From the exhaust air outlet through the condenser with a condenser fan Evacuated towards, the other air is blown downward from the cold air outlet as cold air through the evaporator at the supply fan chamber low temperature region of lower than the air inlet, the temperature stratification so that the upper and the high temperature region This is a temperature stratified cooling system that is formed and ventilator or roof fan is provided on the ceiling so that air in a high temperature region is exhausted and cooled.
[0008]
According to a second aspect of the present invention, the condenser fan is provided at an exhaust hot air exhaust port formed above the condenser, and the supply fan is provided at a cold air outlet formed below the evaporator. This is a temperature stratified cooling system.
[0009]
In the third aspect of the present invention, the air inlet and the cold air outlet of the main body of the air conditioner are formed by extending sufficiently downward from the condenser and the evaporator, and the air inlet is about 2.5 m above the floor. The temperature stratified cooling system according to claim 1 or 2, wherein the air conditioner is suspended from the ceiling.
[0010]
Invention of Claim 4 is a temperature stratified cooling system in any one of Claims 1-3 which exhausts the high temperature air which stayed in the high temperature area | region from the ceiling to the outdoor.
[0011]
A fifth aspect of the present invention is the temperature stratified cooling system according to any one of the first to fourth aspects, wherein a ventilation port is provided in the upper part of the wall surface of the room and the high temperature region is cooled while being ventilated .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0013]
First, the configuration of the air conditioner 10 used in the present invention will be described with reference to FIG.
[0014]
The air conditioner main body 11 includes a heat exchanging unit 14 in which the condenser 12 and the evaporator 13 are installed, and a machine chamber unit 17 in which the compressor 15 and the decompression device 16 are installed, and from the discharge side of the compressor 15. A condenser 12, a decompression device 16, and an evaporator 13 are sequentially connected to the suction side to constitute a refrigeration cycle 18 that is integrally incorporated in the air conditioner body 11.
[0015]
The condenser 12 is disposed above the heat exchanging unit 14 of the air conditioner body 11, and the evaporator 13 is disposed below the heat exchanger 14. The evaporator 13 is disposed obliquely so that the machine chamber 17 side becomes higher, and a drain pan 19 for receiving the generated drain water is provided at the lowermost part thereof.
[0016]
A drain pipe 21 is connected to the drain tray 19, and drain water accumulated in the drain tray 19 is drained to the outside by the drain pipe 21.
[0017]
An air suction port 20 is formed and a filter 22 is provided around the heat exchanging unit 14 of the cooler body 11 between the condenser 12 and the inclined evaporator 13, and exhaust heat is disposed above the condenser 12. An air discharge port 23 is provided, a condenser fan 24 is provided at the exhaust heat air discharge port 23, a cold air outlet 25 is provided below the evaporator 13, and a supply fan 26 is provided at the cold air outlet 25. .
[0018]
The exhaust hot air outlet 23 and the cold air outlet 25 are throttles whose area is reduced to about 1/2 of the diameter of the body part 14a of the heat exchanging part 14 where the condenser 12 and the evaporator 13 are disposed. Formed in portions 14b and 14c. Further, a guide vane 28 is provided at the cold air outlet 25 below the supply fan 26 so that the cold air blown out is blown obliquely downward as indicated by an arrow A25.
[0019]
A large number of the air conditioners 10 shown in FIG. 2 are installed in a room 30 such as a one-story factory where the height of the ceiling 31 is 5 m or more as shown in FIG.
[0020]
In this case, the air conditioner 10 is attached so that the height H from the floor F of the air suction port 20 of the air conditioner 10 is about 2.5 m.
[0021]
The ceiling 31 is provided with a venturator and a roof fan 33 for exhausting the air in the room 30, and a ventilation port 35 is provided above the wall surface 34.
[0022]
In the above, the air sucked from the air suction port 20 of the air conditioner 10 as indicated by the arrow A20 flows between the condenser 12 and the evaporator 13 of the heat exchanging portion 14 of the air conditioner body 11, and one of them is a condenser fan. 24, the exhaust air is discharged from the exhaust hot air outlet 23 through the condenser 12 as indicated by an arrow A23, and the other is cooled by the supply fan 26 through the evaporator 13 and from the cold air outlet 25 as indicated by an arrow A25. Is blown out.
[0023]
In this way, by flowing one of the air sucked into the air suction port 20 as indicated by the arrow A20 to the condenser 12 and the other to the evaporator 13, the air suction port 20 is set as the boundary line L and a high temperature above it. A region 36 is formed, and a low temperature region 37 is formed below.
[0024]
In general, when cooling is intended for a human, the low temperature region 37 of 2 to 2.5 m or less from the floor F is required to have an appropriate temperature of about 24 to 27 ° C. It does not matter if the temperature is high.
[0025]
In this case, since the cold air has a high density, the hot air stays in the low temperature region 37 when blown from the cold air outlet 25 as indicated by the arrow A25, and the hot air discharged from the exhaust hot air outlet 23 as indicated by the arrow A23 is Since the density is small and it has the property of staying up to the ceiling 31, the air in the room 30 is separated into air in the high temperature region 36 (warm air) and air in the low temperature region 37 (cold air) by the air conditioner 20. In other words, by forming temperature stratification in the room 30, it is possible to reduce the cooling load, reduce the capacity of the cooling device, and reduce the operating power cost.
[0026]
In this case, since the heat in the room 30 rises by the amount of work of the compressor 15, the air (warm air) in the high temperature region 36 is exhausted from the roof fan 33 and outside air is introduced from the ventilation port 35, thereby reducing the low temperature region 37. It can be kept at an appropriate temperature (24 to 27 ° C.).
[0027]
Further, the exhaust air outlet 23 and the cold air outlet 27 are formed in the throttle portions 14b and 14c constricted from the body portion 14a of the heat exchanging portion 14, so that the air in the high temperature region 36 is blown by each blowing air. The air in the low temperature region 37 is caught in the low temperature region 37 and flows into the high temperature region 36 so that the air in the high temperature region 36 and the low temperature region 37 does not cause convection. In addition, the cold air blown from the cold air outlet 25 is allowed to flow obliquely downward as indicated by an arrow A25 so that the cold air is diffused over a wide range without giving a cold draft to an operator who is working directly under the cold air outlet 25. Can do. Further, it becomes possible to prevent convection and maintain temperature stratification.
[0028]
FIG. 3 shows another embodiment of the air conditioner 10 according to the present invention.
[0029]
3, the supply duct 40 is connected to the lower part of the body part 14a of the heat exchanging part 14 of the air conditioner body 11, and the cold air outlet 27 is formed in the lower part of the supply duct 40 via the throttle part 14c. A supply fan 26 and a return bend 28 are provided at the cold air outlet 27, and a suction duct 42 extending downward integrally with the supply duct 40 is connected to the suction port 41 of the trunk portion 14a, and an air suction port is provided at the lower end thereof. 43 is formed. In this case, the air suction port 43 is formed by notching diagonally so that the suction flow flows in as indicated by an arrow A43. Further, a filter 44 is provided at the suction port 43 of the body portion 14a.
[0030]
In the embodiment of FIG. 3, it is sufficient that the low temperature region 37 is 2.5 m from the floor. Therefore, the cold air outlet 25 and the air inlet 43 are at the same height, and the exhaust heat air outlet is provided. 23 is more convenient if it is close to the ceiling 31, the supply duct 40 and the suction duct 42 are lowered and connected to the body 14 a of the heat exchanging section 14, so that the exhaust heat air outlet 23 The position can be arranged close to the ceiling, and convection between the high temperature region and the low temperature region can be prevented to reliably form the temperature stratification.
[0031]
In the above-described embodiment, the example in which the air conditioner 10 is suspended from the ceiling 31 by the wire or the rod 32 has been described. However, the air inlets 20 and 43 of the air conditioner 10 are installed at a height of about 2.5 m from the floor. Of course, if possible, it may be installed by being attached to a pillar or beam arranged in the room 30.
[0032]
Further, the example in which the condenser fan 24 and the supply fan 26 are provided in the exhaust heat air outlet 23 and the cold air outlet 25, respectively, has been described, but a fan may be provided on the air inlets 20 and 42 side, or the fan may be omitted. Thus, the high temperature region and the low temperature region may be formed by the air circulation by the hot air by heat exchange in the condenser 12 and the cold air by heat exchange in the evaporator 13.
[0038]
【The invention's effect】
In short, according to the present invention, the cooling load can be reduced by forming a high-temperature region and a low-temperature region in a room with a cooling unit in which a refrigeration cycle is integrated, and cooling a height of about 2.5 m from the floor surface. At the same time, the capacity of the cooling device can be reduced, and the operating power cost can be reduced. Further, the cooling equipment cost can be reduced and the construction period can be shortened.
[Brief description of the drawings]
FIG. 1 is an overall view showing an embodiment of the present invention.
FIG. 2 is a diagram showing details of the air conditioner of FIG. 1;
FIG. 3 is a diagram showing another example of the air conditioner of FIG. 2;
FIG. 4 is a diagram showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Air conditioner 11 Air conditioner main body 12 Condenser 13 Evaporator 15 Compressor 16 Depressurizer 18 Refrigeration cycle 20 Air inlet 23 Exhaust heat air outlet 25 Cold air outlet 30 Indoor 36 High temperature area 37 Low temperature area

Claims (5)

In an indoor cooling system with a ceiling height of 5m or more, a refrigeration cycle consisting of a compressor, a condenser, a pressure reducing device, and an evaporator is integrated into the cooling body, and a condenser and a condenser are placed above the cooling body. The fan and the evaporator and the supply fan are arranged at the bottom, an air suction port is provided in the cooler body between the condenser and the evaporator, and an exhaust heat air exhaust port is provided above the cooler body of the condenser to evaporate. configure the cooling machine is provided cool air outlet below the cooling machine body vessels, air inlet of the cooling machine, the cooling machine so that the height of the floor or al 2.5 m, at ceiling etc. Place a large number of air from the air intake port between the condenser and evaporator of the heat exchanger of the cooling body, and one of the air passes through the condenser with the condenser fan and rises upward from the exhaust air exhaust port. Exhaust and steam the other air with a supply fan Blown downward from the cold air outlet as cold air through the vessel, hot provided ventilator or roof fan on the ceiling to form a thermal stratification to room a low temperature region lower than the air inlet, the upper a high temperature region area The temperature stratified cooling system is characterized by exhausting the air of the air and cooling it. The temperature stratified cooling system according to claim 1 , wherein the condenser fan is provided at an exhaust hot air exhaust port formed above the condenser, and the supply fan is provided at a cold air outlet formed below the evaporator .   The air inlet and the cold air outlet of the air conditioner body are formed by extending downward sufficiently from the condenser and the evaporator, and the air conditioner is suspended from the ceiling so that the air inlet is 2.5 m above the floor. The temperature stratified cooling system according to claim 1 or 2.   The temperature stratified cooling system according to any one of claims 1 to 3, wherein high-temperature air staying in a high-temperature area on the ceiling is exhausted from the ceiling to the outside. The temperature stratified cooling system according to any one of claims 1 to 4, wherein a ventilation port is provided in an upper part of the wall surface of the room, and cooling is performed while ventilating a high temperature region .

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