JP2004211926A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cost-advantageous air conditioner capable of performing air conditioning such as the moisture conditioning, temperature conditioning, deodorization, and prevention of condensation of a wide indoor space such as a general plant in a short time throughout a season. <P>SOLUTION: In this air conditioner, a blow fan 10 and a spray nozzle 13 are installed near the ceiling of the indoor space 1, and air having an air velocity of 60 to 120 m/s is fed into the indoor space 1 by the blow fan 10 to continue the average flow of air in the indoor space 1. Also, city water is formed in soft water and water particles of 1.5 to 30.0 μm in particle size are sprayed from the spray nozzle 13 to bear the particles on the air and flow into the indoor space 1. Then, the indoor is moisture-controlled, temperature-controlled, and deodorized by the water particles, and condensation can be prevented by the flow of air by air blowing. Accordingly, the air conditioner can be effectively used throughout the season. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is an air conditioner for controlling humidity and preventing dew condensation in a wide specific indoor space such as a weaving factory, a paper mill, a printing factory, a livestock factory, etc. Air conditioner.
[0002]
[Prior art]
In various factories where there are many people and objects, large electric and gas-type air conditioners are installed to adjust the temperature and humidity of the factory's indoor space. It is necessary to use many large air conditioners, which increases initial costs and running costs. In addition, when installing ducts on the ceiling or floor of the factory to send air that is intensively air-conditioned to the workplace in the factory to centrally air-condition the workplace, the number of large air conditioners can be reduced and running costs can be reduced. However, the initial cost is high as a result of the duct being installed in a large factory.
[0003]
For this reason, in a high-humidity factory, a large blower fan is placed near the ceiling of the factory to stir the air inside the factory and discharge the high-humidity air generated at the workplace outside the factory. 2. Description of the Related Art An air conditioner that adjusts humidity in a factory is known (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-2002-306071 (FIG. 2)
[0005]
[Problems to be solved by the invention]
The air conditioner (the tea factory air conditioner in Patent Literature 1) blows air horizontally from a blower arranged near the ceiling of the tea factory to stir the air in the indoor space and to generate a high air generated in a workplace below the blower. Humid air is placed on the wind and discharged outside the factory to prevent the humidity inside the factory from becoming excessive. Such an air conditioner can be implemented at low initial cost and running cost because it does not use ducts, but it is comfortable even if it can prevent excessive increase in humidity of the indoor space just by stirring the indoor air by the blower. It is difficult to adjust the humidity by 40 to 60%, and it is difficult to adjust the temperature in the factory and prevent dew condensation on the ceiling, so that the humidity adjustment and dew condensation must be relied on other types of air conditioners.
[0006]
In fact, in one factory, a hot and humid summer uses a cooling device suitable for the summer, and a cold and dry winter uses a corresponding heating and humidifying device in the winter. In factories where odors are generated, such as tea factories, livestock factories, and printing factories, devices with a deodorizing function using an odor absorbing material such as activated carbon are used. In other words, one factory is equipped with a plurality of air conditioners of different types according to the seasons of spring, summer, autumn and winter, and uses the air conditioners properly according to seasonal changes. In other words, there is no multifunctional air conditioner that can be used throughout the whole season, and as a result, there is a problem that the initial cost of equipment for air conditioning the entire factory through the full season is high.
[0007]
It is an object of the present invention to provide an air conditioner which is multifunctional and can be implemented at low cost for air conditioning a large indoor space of a factory throughout a full season.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a blower fan for directly sending air that causes air in a predetermined indoor space to flow through the entire indoor space to the indoor space, and water particles that are disposed at an air outlet of the blower fan and that are ejected. A plurality of independent spray nozzles for supplying air to the wind from the blower fan, a high-pressure generating pump for supplying high-pressure water to each of the plurality of spray nozzles, a blowing speed switching operation by the blower fan, and a spray amount switching by the plurality of spray nozzles An operation control unit for controlling operation throughout the full season.
[0009]
Here, the indoor space of the factory is a large space exceeding 330 m ² , such as a weaving factory, a printing factory, and a livestock factory, and is an unsealed space where people and goods enter and leave. A blower fan and a spray nozzle unit are installed at a height of 5 to 8 m from the floor of this indoor space, and only the blower fan is operated according to the season and, if necessary, to blow air into the indoor space. Then, the air in the indoor space is caused to flow, or the blowing fan and the high-pressure generating pump are operated, and the water fine particles ejected from the spray nozzle are placed on the blowing from the blowing fan and supplied to the indoor space. In the case of the former ventilation alone, ventilation of the interior space of the factory and the prevention of condensation on the ceiling and walls can be prevented. By adding spray to this ventilation, the humidity and temperature of the interior space can be controlled and deodorized (deodorization of the odor felt by humans). Can be controlled. Such various types of air conditioning can be selected according to seasonal changes. In addition, for air conditioning such as dew condensation prevention and humidity control, the speed of the air created by the blower fan is 60 m / s to 120 m / s, a high pressure jet pressure is 30kg / cm ² ~150kg / cm ² of water particles to be ejected at high pressure, and, by ejection by the ejection amount of 200 (l / h) ~3000 ( l / h), more effective It is performed stably. Further, the water particles ejected from the spray nozzle are desirable in that soft water suppresses clogging of the spray nozzle, and further, the spray nozzle is formed by forming a spiral water ejection passage on the inner surface of the spray nozzle. It is desirable to make water fine particles more fine.
[0010]
In the present invention, the water particles ejected from the spray nozzle having a particle diameter of 1.5 μm to 30.0 μm have a function of cooling the surroundings by heat of vaporization when ejected from the spray nozzle and evaporated. It is desirable because it has excellent function of absorbing odor components and reducing odor in the factory.
[0011]
Further, in the present invention, it is desirable that the blowing direction of the blowing fan and the spraying direction of the water fine particles from the spray nozzle be substantially parallel. In this way, the water fine particles sprayed from the spray nozzle are fed forward by the blowing from the blower fan in a tailwind manner, are diffused by the blowing while being blown, and are dispersed throughout the indoor space. Effectively, the entire indoor space is uniformly humidified and temperature-controlled.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0013]
The air conditioner shown in FIG. 1 is used in an indoor space 1 of a general-sized factory such as a weaving factory, a printing factory, and a paper mill, and controls the humidity, temperature, deodorization, and dew condensation of the indoor space 1. The various types of air-conditioning are performed by selecting ventilation and spraying of water particles. An air-conditioning unit 16 having a blower fan 10 and a plurality of independent spray nozzles 13 is installed near the ceiling inside the building 2 surrounding the indoor space 1 while being supported by the gantry 3. A water supply system 20 for supplying water to the spray nozzle 13 is installed outside or inside the building 2, and a humidity sensor 30 that detects an average humidity of the indoor space 1 is installed inside the building 2. In addition, an operation control unit 31 that controls the blowing speed switching operation of the blowing fan 10 and the spray amount switching operation of the plurality of spray nozzles 13 throughout the full season is provided outside or inside the building 2.
[0014]
The water supply system 20 purifies soft water supplied from an automatic water softener 22 through a valve 23, and an automatic water softener 22 that converts water from a water source such as tap water into soft water when supplied through a valve 21. A micro filter 24, a water supply tank 25 for storing the soft water purified by the micro filter 24, and a high pressure generating pump 26 for supplying the spray nozzle 13 with the soft water in the water tank 25 as predetermined high pressure water. The automatic water softener 22 is for preventing clogging of the spray nozzle 13 with hard water, and a commercially available product that continuously softens a large amount of tap water is used. If the water source is soft water, the automatic water softener 22 is unnecessary. As the microfilter 24, a commercially available product that removes bacteria of about 0.4 μm or less from soft water may be used.
[0015]
High pressure generating pump 26 is to the soft water of the water supply tank 25 to the high-pressure water of ^{30kg / cm 2 ~150kg / cm 2} , to the water supply via a valve 27 to a plurality of spray nozzles 13 as shown in FIG. The plurality of spray nozzles 13 are of the same type, and when high-pressure water is supplied from a common high-pressure generating pump 26, a total of 200 (1 / h) to 3000 (1 / h) is ejected from all the spray nozzles 13. Emit soft water particles in volume.
[0016]
A gantry 3 is fixed at an upper position at a height of 5 to 7 m from the floor of the indoor space 1, and a blower fan 10 is mounted on the gantry 3 via a bracket 11 so as to be rotatable up, down, left, and right. A blower fan 10 is arranged near an end wall of the indoor space 1 with its cylindrical air outlet 12 facing the center of the indoor space 1. A plurality of, for example, a pair of left and right spray nozzles 13 are provided on both sides of the air outlet 12 of the blower fan 10 as shown in FIGS. 2 and 3. Hereinafter, the pair of spray nozzles 13 will be referred to as spray nozzles 13a and 13b only when distinguished.
[0017]
The blower fan 10 directly blows air that causes the air in the indoor space 1 to flow through the entire indoor space toward the center of the indoor space 1. Such a blower fan 10 can use a commercially available product having a capability of supplying wind at a wind speed of 60 m / s to 120 m / s, for example, a small, energy-saving type commercially available product having a rated power consumption of 1.5 kW and a diameter of about 1 m. It is. By blowing the wind of a predetermined range of wind directly (without using ducts) toward the air in the indoor space 1 by the blower fan 10, the flow of the air in the entire indoor space 1 is stabilized. Air flow continues. This air flow makes sure and high performance various types of air conditioning such as humidity control and temperature control, dew condensation prevention, and deodorization throughout the full season.
[0018]
As shown in FIGS. 2 and 3, each of the pair of spray nozzles 13 a and 13 b is a high-pressure water supply pipe extending vertically, and protrudes the spray ports 14 at six locations above and below the front wall. As shown in FIGS. 4 and 5, the six spray ports 14 are cylindrical pipes arranged at equal intervals in the vertical direction, and house the pre-filter 18 in a replaceable manner. The inner surface of the opening at the tip of each spray port 14 is a conical surface, and a spiral groove 17 is formed in the conical surface. The high-pressure water that has passed through the pre-filter 18 receives a turning force in the spiral groove 17 and is ejected from the opening at the tip of the spray port 14. When the high-pressure water is jetted, it is atomized and jetted as extremely fine water particles, and the water particles are further miniaturized by the action of the swirling force of the spiral groove 17 to have a particle size of 1.5 μm to 30.0 μm. Is released as a spray of ultrafine water particles. The spray direction from each spray port 14 is set to be substantially the same as the blowing direction of the duct 12, so that the jetted water fine particles are sucked by the wind from the duct 12 under a negative pressure, and are driven forward by the wind. Splashes and flows.
[0019]
The air conditioner of FIG. 1 operates properly throughout the full season of spring, summer, autumn and winter.
[0020]
For example, in summer when the temperature inside the factory becomes high temperature and high humidity, the blowing operation by the blowing fan 10 and the spraying operation by the spray nozzle 13 are performed in the following manner. The blower fan 10 is driven to blow air at a wind speed of 60 m / s or more and 120 m / s or less substantially horizontally toward the center of the indoor space 1 and from the high-pressure generating pump 26 to 30 kg / cm ^{2 to} 150 kg / cm ^2. Is supplied to the pair of left and right spray nozzles 13a and 13b, and the particles are sprayed from all the spray ports 14 of the pair of spray nozzles 13a and 13b at an ejection amount of 200 (1 / h) to 3000 (1 / h). Ultrafine water particles having a diameter of 1.5 μm to 30.0 μm are ejected. The high-speed air from the air outlet 12 of the blower fan 10 flows near the ceiling of the indoor space 1, and the air in the indoor space 1 starts flowing through the entire room due to the wind. When the blowing is continued, the air flows in the direction indicated by a broken line arrow in FIG. 1 in the indoor space 1, and the flow of the air is continuously generated in the entire room on average, and the temperature difference and the humidity difference in the indoor space 1 are reduced. Reduce the temperature and average the temperature and humidity of the entire room.
[0021]
At the same time as the air is blown from the blower fan 10, the fine water particles ejected from the pair of left and right spray nozzles 13a and 13b are sucked into the high-speed wind, flow through the indoor space 1 with the wind, and partially evaporate when flowing. The surrounding space is cooled by heat, and this cooling air is dispersed by the overall airflow in the indoor space 1 to cool the indoor space 1 to an average temperature. Further, the water fine particles sprayed from the spray nozzles 13a and 13b and flowing through the indoor space 1 are adjusted to average the humidity of the indoor space 1. Such temperature control and humidity control are facilitated by the wind blown into the indoor space 1 at high speed, and are performed in a short time.
[0022]
Further, a part of the water fine particles flowing in the indoor space 1 is ionized, and if there is an odor generating substance in the work place of the indoor space 1, the odor component from the odor generating substance is ion-decomposed to reduce the odor. In fact, assuming that the amount (level) of the odor component in the indoor space 1 is “100”, about “10” of the odor component is adsorbed and removed by the fine particles of spray water, and the level of the odor in the room is reduced by humans. Decreases to the point where you do not feel the smell The decrease in the odor level makes the human feel that the odor has been deodorized, and the working environment in summer becomes favorable.
[0023]
Humidity is detected by a humidity sensor 30 installed at a specific position in the indoor space 1, and a detection signal is transmitted to an operation control circuit of an operation control unit 31 to control the driving of the high-pressure generating pump 26 and the blower fan 10. Thereby, the temperature and humidity of the indoor space 1 can be adjusted. That is, the amount of soft water spouted from the spray nozzle 13 by the high-pressure generating pump 26 and the wind speed of the blower fan 10 are increased or decreased based on the experimental data by the change in humidity of the indoor space 1. When the spray nozzles 13 are a pair of left and right spray nozzles 13a and 13b, the valves 27 and 28 shown in FIG. 2 are manually or automatically opened and closed, and both the pair of left and right spray nozzles 13a and 13b, or The temperature of the indoor space 1 is controlled by performing the spraying operation on one side. Such temperature control and humidity control by opening and closing the valves 27 and 28 can be performed using a simple control circuit and a simple adjustment mechanism.
[0024]
According to an experiment, when the wind speed of the blower fan 10 is less than 60 m / s, it takes a long time to adjust the humidity of the indoor space 1 of a general-sized factory to a comfortable humidity of 40% to 60%. When the wind speed exceeds 120 m / s, the effect of the strong wind becomes remarkable, which is not practical. Practical and desirable wind speeds are between 80 m / s and 100 m / s. If the pressure of the soft water generated by the high-pressure generating pump 26 is less than 30 kg / cm ² , it is difficult to make the water from the spray nozzle 13 extremely fine, and in addition to adjusting the humidity, deterioration in functions such as cooling and deodorization is conspicuous. If it exceeds / cm ² , it becomes impractical because expensive equipment is required for countermeasures against high-pressure water. It is also possible to make the amount of soft water ejected from the spray nozzles 13 out of the range of 200 (l / h) to 3000 (l / h) by increasing or decreasing the number of the spray nozzles 13; In a factory of an average size, it was recognized by experiments that the ejection amount was within the range of 200 (1 / h) to 3000 (1 / h), which was the safest and practical.
[0025]
The air conditioner shown in FIG. 1 used in the summer can be a low-cost, energy-saving type with low rated power consumption for the blower fan 10. Therefore, the initial cost is five minutes lower than that of the conventional air conditioner in the summer. It can be reduced to about 1 and the running cost when fully operated for 24 hours a day can be reduced to about 1/10 of the conventional air conditioner. Therefore, even if the factory is expanded and the number of the air conditioners shown in FIG. 1 is increased, the initial cost and the running cost are significantly lower than those of the conventional air conditioners.
[0026]
When the air conditioner of FIG. 1 is used in winter, a blowing operation is performed by the blowing fan 10 to stop the spraying operation by the spray nozzle 13 or reduce the spraying operation scale. For example, in winter, when dew condensation tends to occur due to the temperature difference between the indoor and outdoor areas on the ceiling of the factory, even if only the blowing operation by the blower fan 10 is performed, the dew condensation on the indoor ceiling and walls is caused by the flow of air generated in the indoor space 1. Is less likely to occur, and even if dew condensation occurs, the occurrence of dew condensation is suppressed by touching the airflow, and consequently the dew condensation is prevented. Therefore, the trouble that the condensation on the ceiling of the factory becomes water droplets and falls on the products at the workplace in the factory is eliminated, and the work environment in the workplace is always good. When the spray operation is performed on a small scale together with the air blowing, the indoor space 1 that tends to dry in winter is humidified by spray, and the humidity is adjusted in the same manner as in summer.
[0027]
【Example】
6 and 7 show experimental examples in which the apparatus of the present invention is applied to a 990 m ² printing factory. The building 2 shown in the figure is a horizontal one-story printing factory in the east and west, and three identical air conditioning units 16A to 16C are installed above the east corner of the indoor space 1 of the factory. In December, under the condition of the outside air temperature of the factory of 5.0 ° C., the air blowers of the air conditioning units 16A to 16C were stopped, and when the air conditioner was driven, the factory had a height of 1 m from the floor shown in FIG. The temperature of each point A1-3, B1-3, C1-3 was measured. A3, B3, and C3 are the center positions of the factory.
[0028]
When the air blowing fans of the air conditioning units 16A to 16C are stopped, the temperature difference between A1, B1, and C1 is about 1 ° C., the temperature difference between A2, B2, and C2 is about 0.8 ° C., and the center A3 , B3 and C3 had a temperature difference of about 2.2 ° C., and the temperature difference between A1 and A3 was 2.0 ° C. On the other hand, when the blowing fans of the air conditioning units 16A to 16C are driven, the temperature difference between A1, B1, and C1 is about 0.5 ° C., and the temperature difference between A2, B2, and C2 is about 1.0 ° C. The temperature difference between the center A3, B3 and C3 was about 0.5 ° C., and the temperature difference between A1 and A3 was about 0.5 ° C. As described above, since the temperature difference at each point corresponds to the humidity difference, it is more effective to drive the blower fans of the air conditioning units 16A to 16C to average the temperature and humidity of the indoor space 1 more effectively than not to drive them. It can be seen that it becomes uniform. This uniformity of the humidity was demonstrated by the fact that when the printing operation was performed at the factory in FIG. 6, the wrinkles of the printed paper were small, and good results were obtained on the ink-impregnated surface.
[0029]
【The invention's effect】
According to the present invention, a unit of a blower fan and a spray nozzle is provided in an indoor space such as a factory, and air is directly blown from the blower fan to the indoor space to flow air through the entire indoor space. By spouting water particles appropriately, the average humidity control and temperature control of the entire indoor space can be performed accurately in a short time, and in particular, in the summertime, the operation for deodorization can be selectively executed. In winter, it is possible to select and execute the operation for preventing dew condensation, and to provide a multifunctional air conditioner excellent in practicality and versatility that can be effectively used in each season throughout the full season. In addition, a small-sized, inexpensive, energy-saving blower fan and spray nozzle can be applied, and an air conditioner with a large initial value and a low running cost can be provided.
[0030]
Further, by making the blowing direction of the blowing fan and the spraying direction of the spraying nozzle substantially parallel, the water particles sprayed from the spraying nozzle can be effectively miniaturized on the wind from the blowing fan, and flow into the indoor space. Can be done.
[Brief description of the drawings]
FIG. 1 is a side view showing an outline of a humidity adjusting device according to an embodiment of the present invention.
FIG. 2 is a front view of a blower fan and a spray nozzle in the apparatus of FIG. 1;
FIG. 3 is a partial plan view of the apparatus in FIG. 2;
FIG. 4 is a side view of a spray nozzle in the apparatus of FIG. 2;
FIG. 5 is a partially enlarged sectional view of the spray nozzle of FIG.
FIG. 6 is a plan view of a factory for explaining an experimental example of the apparatus of the present invention.
FIG. 7 is a sectional view of the factory of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Indoor space 10 Blow fan 11 Bracket 12 Air outlet 13 Spray nozzle 14 Spray port 16 Air conditioning unit 17 Spiral groove 18 Filter 20 Water supply system 21 Valve 22 Automatic water softener 23 Valve 24 Micro filter 25 Water supply tank 26 High pressure generating pump 27 Valve 28 Valve 30 Humidity sensor 31 Operation control unit

Claims (4)

A blower fan that directly sends air that causes air in a predetermined indoor space to flow through the entire indoor space to the indoor space, and a plurality of blower fans that are disposed at an air outlet of the blower fan and that put ejected water fine particles on the wind from the blower fan. Independent spray nozzles, a high-pressure generating pump for supplying high-pressure water to each of the plurality of spray nozzles, and operation control for controlling the blowing speed switching operation by the blower fan and the spray amount switching operation by the plurality of spray nozzles throughout a full season. And an air conditioner comprising: 2. The air conditioner according to claim 1, wherein the blower fan blows a wind having a wind speed of 60 m / s to 120 m / s into the indoor space. 3. The air conditioner according to claim 1, wherein water particles having a particle size of 1.5 μm to 30.0 μm are sprayed from the spray nozzle. The air conditioner according to any one of claims 1 to 3, wherein a blowing direction of the blowing fan and a spray direction of a spray nozzle are substantially parallel.

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