JP3732177B2 - Air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is an air conditioner that performs humidity adjustment and prevention of condensation in a wide specific indoor space such as a weaving factory, a paper factory, a printing factory, a livestock factory, and the like. The present invention relates to an air conditioner.
[0002]
[Prior art]
In various factories where people and goods go in and out, large-scale electric and gas air conditioners are installed to adjust the temperature and humidity of the indoor space of the factory. It is necessary to use several large air conditioners, which increases initial costs and running costs. Also, when ducts that send air that is intensively conditioned to the factory workplace are installed on the ceiling or floor of the factory to intensively air-condition the workshop, the number of large air conditioners can be reduced and running costs are reduced. However, the initial cost is high due to the ducts installed in a large factory.
[0003]
For this reason, in high-humidity factories, a large blower fan is placed near the factory ceiling to stir the air in the factory and exhaust the high-humidity air generated in the workplace outside the factory. An air conditioner that adjusts humidity in a factory is known (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laying-Open No. 2002-306071 (FIG. 2)
[0005]
[Problems to be solved by the invention]
The air conditioner (tea factory air conditioner in Patent Document 1) blows in a horizontal direction from a blower arranged near the ceiling of the tea factory, stirs the air in the indoor space, and is generated at a work place below the blower. Humidity air is put on the wind and discharged outside the factory to prevent the humidity in the factory space from becoming excessive. Such an air conditioner can be implemented at low initial cost and running cost because it does not use a duct, but it is comfortable even if it can prevent an excessive increase in humidity in the indoor space just because the air is stirred by the blower. Therefore, it is difficult to adjust the humidity of 40 to 60%, and it is difficult to adjust the temperature in the factory and prevent condensation on the ceiling, and the humidity adjustment and prevention of condensation must be relied on other types of air conditioners.
[0006]
In fact, in one factory, high-temperature and high-humidity summer uses a cooling device suitable for the summer, and the low-temperature dry season uses a corresponding heating device and humidification device. Also, in plants where odors are generated, such as tea factories, livestock factories, and printing factories, devices with a deodorizing function using odor absorbing materials such as activated carbon are used. In other words, one factory is equipped with a plurality of different types of air conditioners according to the seasons of spring, summer, autumn and winter, and uses them in accordance with changes in the seasons. In other words, there is no multifunctional air conditioner that can be used throughout the full season, and as a result, there is a problem that the initial cost of the facility for air conditioning the entire factory through the full season is high.
[0007]
An object of the present invention is to provide a multi-function air-conditioning apparatus that can air-condition a large indoor space of a factory through a full season and can be implemented at low cost.
[0008]
[Means for Solving the Problems]
Since the present invention is to achieve the above object, a blowing fan for blowing air directly towards the only wind flowing the air of a predetermined indoor space across indoor space in the center of the room space, a cylindrical air blowing of the blowing fan disposed on either side of the outlet, and a plurality of independent spray nozzle to put the jet water particles in the wind from the blower fan, and a high-pressure generating pump for water supply high pressure water to the plurality of the spray nozzles, the blowing by the blower fan An operation control unit that controls the speed switching operation and the spray amount switching operation by a plurality of spray nozzles throughout the full season , the spray nozzle has a conical surface at the tip opening, and a spiral groove is formed in the conical surface, The high-pressure water has a spray port that receives a turning force in the spiral groove and is ejected from the tip opening .
[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 exit. A unit of blower fan and spray nozzle is installed at a height of 5 to 8 m from the floor of this indoor space. Depending on the season and if necessary, only the blower fan is operated to blow wind into the indoor space. Then, the air in the indoor space is made to flow, or the blower fan and the high-pressure generating pump are operated, and the water fine particles ejected from the spray nozzle are placed on the air blown from the blower fan and fed to the indoor space. In the case of only the former air blowing, the indoor space of the factory can be ventilated and condensation on the ceiling and walls can be prevented. If spray is added to this air flow, the humidity and temperature of the indoor space are adjusted, and deodorization (deodorization of smells that humans feel) Can be controlled. Such various air conditioning can be selected according to the change of the season, and air conditioning such as anti-condensation and humidity control has a wind speed of 60 m / s to 120 m / s created by the blower fan. 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 To be performed stably. The water particles ejected from the spray nozzle are desirable in that soft water suppresses clogging of the spray nozzle, and the spray nozzle is formed by forming a spiral water ejection passage on the inner surface of the spray port. It is desirable for finer formation of water fine particles.
[0010]
In the present invention, the particle size of the water fine particles ejected from the spray nozzle is set to 1.5 μm to 30.0 μm, the function of cooling the surroundings with the heat of vaporization when ejected from the spray nozzle and evaporated, It is desirable because of its excellent function of absorbing odor components and reducing odors in the factory.
[0011]
Moreover, in this invention, it is desirable to make the ventilation direction of a ventilation fan and the spraying direction of the water fine particle from a spray nozzle substantially parallel. By doing in this way, the water fine particles sprayed from the spray nozzle are fed forward by the wind from the blower fan, diffused by the blow while being fed, and dispersed throughout the indoor space, and more The entire indoor space is effectively conditioned and temperature-controlled.
[0012]
DETAILED DESCRIPTION OF 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 the indoor space 1 of factories of general sizes such as weaving factories, printing factories, and paper mills. Various air conditioning is performed by selecting air blow and water fine particle spray. An air conditioning unit 16 including a blower fan 10 and a plurality of independent spray nozzles 13 is supported and installed on the gantry 3 near the ceiling inside the structure 2 surrounding the indoor space 1. A water supply system 20 for supplying water to the spray nozzle 13 is installed outside or inside the structure 2, and a humidity sensor 30 for detecting the average humidity of the indoor space 1 is installed in the structure 2. Moreover, the operation control part 31 which controls the ventilation speed switching operation | movement of the ventilation fan 10 and the spray amount switching operation | movement of the several spray nozzle 13 throughout a full season is arrange | positioned outside or inside the structure 2.
[0014]
The water supply system 20 purifies the soft water supplied from the water source such as tap water through the valve 21 to soft water when the water is supplied through the valve 21 and the soft water supplied from the automatic water softer 22 through the valve 23. A microfilter 24, a water supply tank 25 that stores soft water purified by the microfilter 24, and a high-pressure generation pump 26 that supplies the spray nozzle 13 with the soft water in the water supply tank 25 as predetermined high-pressure water. The automatic water softener 22 is for preventing the spray nozzle 13 from being clogged with hard water, and a commercially available product that continuously softens a large amount of tap water is used. If the water source is originally soft water, the automatic water softener 22 is unnecessary. The microfilter 24 may be a commercially available product that removes germs of about 0.4 μm or less from soft water.
[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 generation pump 26, a total of 200 (l / h) to 3000 (l / h) is ejected from all the spray nozzles 13. Spouts soft water particles in quantity.
[0016]
The gantry 3 is fixed to an upper position 5 to 7 m above the floor surface of the indoor space 1, and the blower fan 10 is installed on the gantry 3 so as to be vertically and horizontally rotatable via a bracket 11. A blower fan 10 is arranged near the end wall of the indoor space 1 with its cylindrical air outlet 12 directed toward the center of the indoor space 1. A plurality of, for example, a pair of left and right spray nozzles 13 are installed on both sides of the air outlet 12 of the blower fan 10 as shown in FIGS. Hereinafter, only when this pair of spray nozzles 13 is distinguished, they are referred to as spray nozzles 13a and 13b.
[0017]
The blower fan 10 directly blows wind that allows the air in the indoor space 1 to flow in the entire indoor space toward the center of the indoor space 1. As such a blower fan 10, a commercial product capable of supplying wind at a wind speed of 60 m / s to 120 m / s, for example, a small and energy-saving commercial product with a rated power consumption of 1.5 kW and a diameter of about 1 m can be used. It is. The air flow is stabilized in the entire indoor space 1 by directly sending the wind of a predetermined range of wind speed (without using ducts) toward the air in the indoor space 1 by the blower fan 10. Occurs and airflow continues. This air flow ensures reliable and high-performance air conditioning such as humidity control, condensation prevention, and deodorization, which will be described later, 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 that extends vertically, and projects spray ports 14 at six locations on the front wall. As shown in FIGS. 4 and 5, the six spray ports 14 are cylindrical tubes arranged at equal intervals in the vertical direction, and the prefilter 18 is accommodated therein in an exchangeable manner. The inner surface of the tip opening 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 prefilter 18 receives a turning force in the spiral groove 17 and is ejected from the tip opening of the spray port 14. When the high-pressure water is ejected, it is atomized to be ejected as ultrafine water particles, and the water particles are further refined by the action of the turning force by the spiral groove 17 so that the particle size is 1.5 μm to 30.0 μm. Is released as a spray of ultrafine water particles. The spraying direction from each spraying port 14 is set to be almost the same as the blowing direction of the duct 12, and the ejected water fine particles are sucked by the wind from the duct 12 with a negative pressure and driven forward by the wind. It is scattered and flows.
[0019]
The air conditioner of FIG. 1 operates appropriately throughout the full season of spring, summer, autumn and winter.
[0020]
For example, in summer when the factory is hot and humid, the blowing operation by the blowing fan 10 and the spraying operation by the spray nozzle 13 are performed as follows. The blower fan 10 is driven to blow a wind 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. Soft water of high pressure water is supplied to the pair of left and right spray nozzles 13a and 13b, and particles are ejected from the entire spray ports 14 of the pair of spray nozzles 13a and 13b at a spray amount of 200 (l / h) to 3000 (l / h). Ultra fine water particles having a diameter of 1.5 μm to 30.0 μm are ejected. High-speed wind from the wind outlet 12 of the blower fan 10 flows near the ceiling of the indoor space 1, and the air in the indoor space 1 begins to flow throughout the room by this wind. When the air flow is continued, air flows in the direction of the broken arrow in FIG. 1 in the indoor space 1, and this air flow continuously occurs on average throughout the room, and the temperature difference and humidity difference of the indoor space 1 are reduced. Reduce the temperature and average the temperature and humidity throughout the room.
[0021]
Simultaneously with the blowing from the blower fan 10, fine water particles ejected from the pair of left and right spray nozzles 13a, 13b are sucked into the high-speed wind and flow through the indoor space 1 together with the wind. The surrounding space is cooled by heat, and this cooling air is dispersed by the overall air flow 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 in 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 a high speed and performed in a short time.
[0022]
Further, when the water fine particles flowing in the indoor space 1 are partly ionized and there is an odor generating substance in the workplace of the indoor space 1, the odor component from the odor generating substance is ion-decomposed to reduce the odor. In fact, if the amount of odorous component in the indoor space 1 is “100”, the odorous component of about “10” is adsorbed and removed by the spray water fine particles, and the indoor odor level is reduced by humans. It falls to the point where it does not feel olfactory. This reduction in the odor level makes humans feel that it has been deodorized, and the work environment in summer is improved.
[0023]
Humidity is detected by a humidity sensor 30 installed at a specific position in the indoor space 1, and this detection signal is transmitted to the operation control circuit of the operation control unit 31 to control the drive of the high-pressure generating pump 26 and the blower fan 10. Thus, the temperature and humidity of the indoor space 1 can be adjusted. That is, the amount of soft water ejected 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 as the humidity of the indoor space 1 increases or decreases. When the spray nozzle 13 is a pair of left and right spray nozzles 13a and 13b, both the pair of left and right spray nozzles 13a and 13b are opened or closed manually or automatically by opening and closing the valves 27 and 28 shown in FIG. The temperature control and humidity control of the indoor space 1 are performed by spraying one of them. The temperature and humidity can be controlled by opening and closing the valves 27 and 28 using a simple control circuit and adjustment mechanism.
[0024]
In addition, 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 in a factory having a general size to a comfortable humidity of 40% to 60%. Therefore, if the wind speed exceeds 120 m / s, the influence of the strong wind becomes remarkable, which is also not practical. A practical and desirable wind speed is 80 m / s to 100 m / s. On the other hand, if the generated pressure of the soft water by the high-pressure generating pump 26 is smaller than 30 kg / cm ² , it is difficult to make the water from the spray nozzle 13 extremely fine, and functions such as cooling and deodorization are conspicuous in addition to humidity adjustment. If it exceeds / cm ² , it becomes impractical because expensive equipment is required for high-pressure water countermeasures. It is also possible to make the amount of soft water ejected from the spray nozzle 13 out of the range of 200 (l / h) to 3000 (l / h) by increasing or decreasing the number of spray nozzles 13. In a factory with an average size, it was recognized through experiments that the amount of jetting is within the range of 200 (l / h) to 3000 (l / h), which is the safest and practical.
[0025]
Further, the air conditioner of FIG. 1 used in summer can be applied to the blower fan 10 with low rated power consumption and low cost and energy saving type, so the initial cost is 5 minutes compared with the conventional summer air conditioner. It can be reduced to about 1, and the running cost when operating 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 installed air conditioners in FIG. 1 is increased, the initial cost and the running cost are significantly lower than the conventional air conditioner.
[0026]
When the air conditioner of FIG. 1 is used in winter, the blowing operation by the blowing fan 10 is performed and the spraying operation by the spray nozzle 13 is stopped or the spray operation scale is reduced. For example, in winter when condensation easily occurs on the ceiling of the factory due to a temperature difference between the room and the outdoor, even if only the air blowing operation by the blower fan 10 is performed, the air flow generated in the indoor space 1 causes the condensation on the indoor ceiling or wall. Even if it is going to generate | occur | produce condensation, generation | occurrence | production is suppressed by touching an air flow, and condensation generation | occurrence | production is prevented as a result. Therefore, troubles such as condensation on the ceiling of the factory becoming water droplets and falling on the products in the factory workplace are eliminated, and the work environment in the workplace is always good. Further, when the spraying operation is performed on a small scale together with the air blowing, the indoor space 1 that tends to dry in the winter season is humidified by spraying, and the humidity is adjusted in the same manner as in the summer season.
[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 structure 2 in the figure is a horizontally long single-decker printing factory in the east and west, and three air conditioning units 16A to 16C of the same type are installed at the upper part of the east corner of the indoor space 1 of this factory. In December, when the outside air temperature of the factory is 5.0 ° C., when the blower fan of each of the air conditioning units 16A to 16C is stopped and driven, the height of 1 m from the floor shown in FIG. 6 of the factory 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 were about 2.2 ° C., and the temperature difference between A1 and A3 was 2.0 ° C. On the other hand, when the air 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 A3, B3 and C3 at the center 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, driving the blower fan of each of the air conditioning units 16A to 16C effectively averages the temperature and humidity of the indoor space 1 rather than not driving. It turns out that it becomes uniform. This uniformity of humidity was demonstrated by the fact that when printing was performed in the factory of FIG. 6, there were few paper wrinkles printed 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 blown directly from the blower fan to the indoor space to cause the air to flow throughout the indoor space. By appropriately ejecting water fine particles, the average humidity and temperature of the entire indoor space can be adjusted accurately in a short time, and in particular, deodorizing operation can be selected and executed in summer. In winter, operation for preventing condensation can be selected and executed, and a multi-functional air conditioner excellent in practicality and versatility that can be effectively used in each season throughout the full season can be provided. In addition, a small-sized, low-priced, energy-saving type blower fan or spray nozzle can be applied, and an air conditioner with a large practical value can be provided with low initial cost and running cost.
[0030]
In addition, by making the blowing direction of the blower fan substantially parallel to the spraying direction of the spray nozzle, water particles sprayed from the spray nozzle are effectively refined on the wind from the blower fan and flow into the indoor space. Can be made.
[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.
2 is a front view of a blower fan and a spray nozzle in the apparatus of FIG. 1. FIG.
FIG. 3 is a partial plan view of the apparatus of FIG. 2;
4 is a side view of a spray nozzle in the apparatus of FIG. 2. FIG.
5 is a partially enlarged cross-sectional view of the spray nozzle of FIG. 4;
FIG. 6 is a plan view of a factory for explaining an experimental example of the apparatus of the present invention.
7 is a cross-sectional view of the factory of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Indoor space 10 Blower fan 11 Bracket 12 Air outlet 13 Spray nozzle 14 Spray outlet 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 generation pump 27 Valve 28 Valve 30 Humidity sensor 31 Operation controller

Claims (3)

A blower fan for blowing air directly towards the only wind flowing the air of a predetermined indoor space across indoor space in the center of the room space, arranged on either side of a cylindrical air outlet of the blower fan was ejected a plurality of independent spray nozzle to put the water particles in the air from the blower fan, and a high-pressure generating pump for water supply high pressure water to the plurality of the spray nozzles, the plurality of spray nozzles and the blowing speed switching operation by the blowing fan And an operation control unit that controls the spray amount switching operation through the full season. The spray nozzle has a conical surface at the tip opening, a spiral groove is formed in the conical surface, and the high-pressure water is supplied to the spiral groove. An air conditioner having a spray port that receives a turning force and is ejected from a tip opening .   The air conditioner according to claim 1, wherein the blower fan blows wind having an air speed of 60 m / s to 120 m / s into the indoor space. Water particles of particle size 1.5μm~30.0μm from the spray nozzle, at high pressure jetting pressure of ^{30kg / cm 2 ~150kg / cm 2} , and 200 (l / h) ~3000 (l / h) The air conditioner according to claim 1 or 2 , wherein spraying is performed with an ejection amount .

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