JP2007071407A - Floor face induced airflow air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor face induced airflow air conditioning system capable of efficiently performing air conditioning and ventilation of a large space such as a factory discharging large amount of exhaust by a local exhaust ventilation of production equipment and exhausting equipment of the whole factory. <P>SOLUTION: In this air conditioning system in the large space having a number of exhaust systems 20, 21, openings of a prescribed opening area penetrating through an outer wall, are formed on an upper part of one or more side walls 100a of a large-space building 100, an outside-air intake port 10 comprising a heat exchanger 13 for taking in fresh air, heating/cooling the taken fresh air as request, and releasing the same toward a floor face in yard, is disposed, the cooled/heated fresh air is conveyed as the floor face induced airflow C by Coanda effect with the floor face to exchange the heat in a desired air conditioned-space, and then the contaminated air hanging in an intermediate layer is raised by ascending airflow separated from the floor face, and exhausted by the local exhaust ventilation 21 disposed in yard and/or a ceiling exhaust system 20 disposed on a ceiling portion or an upper wall face. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air conditioning apparatus and method for a large space, and more particularly to a floor surface induced airflow air conditioning system via a floor surface induced airflow in a large space having a large number of exhaust devices such as factories.

  Conventionally, as this kind of large space air conditioning system, those described in Patent Documents 1, 2, and 3 are known. In the prior art described in Patent Document 1, a blower and a duct are provided in the vicinity of the ceiling to provide a nozzle that ejects the sucked air in the horizontal direction. For this reason, in a large space with a high ceiling, the entire large space is cooled and heated, so there is a problem of requiring enormous air-conditioning energy, and since the nozzle ejection direction is constant, Many nozzles to be ejected had to be arranged.

  In the prior art described in Patent Document 2, an air conditioner, an air supply device, and an air supply outlet are provided in a work area where generation of dust and the like is small, and an air suction part of an exhaust device is provided in a work area where there is a lot of dust. It was. In this invention, effective ventilation can be performed for a work area with a small amount of dust, etc., but there is a problem that dust generated at other places also collects for a work area with a large amount of dust. .

  In the prior art described in Patent Document 3, in order to solve the problems of Patent Document 1 and Patent Document 2, the direction of the blown-off air is changed horizontally or vertically by a nozzle connected to an air conditioner and provided with a swinging means. A large space air conditioning system that can be changed in direction has been proposed.

  FIG. 3 is a diagram showing an embodiment of the invention of Patent Document 3, in which the nozzle 7 can be tilted in the vertical direction, and the ejection direction is appropriately selected in the horizontal direction or the direction toward the obliquely lower person to be ejected. When ventilation is required, fresh outside air is heat-exchanged to a predetermined temperature by the heat exchanger 3 from the suction port 2 provided facing the outside of the air conditioner 1, and is directly adjacent to the nozzle 7 of the outlet 5 by the blower 4. It is something that is sprayed on. Moreover, it is shown that efficient ventilation is performed by discharging indoor air using the roof ventilation fan 8. However, it has been proposed that the inlet 2 may be provided both outdoors and indoors for appropriate energy saving.

  However, the conventional air conditioning system has a problem of consuming a large amount of power energy for supplying air because the conditioned air is transported over a long distance to every corner of a large space using a duct.

  Also, in normal factories, many local exhaust devices are installed to discharge dust, oil mistakes, and environmental deterioration-causing substances such as gas from the production equipment without diffusing, In many cases, the air volume was extremely large, and the large space was at a negative pressure that was more extreme than the outside air, and the airflow from the doorway and the opening disturbed the air conditioning of the large space.

  Furthermore, the extreme negative pressure reduces the dust collection efficiency of the local exhaust due to the influence of turbulent flow such as a draft, and it is difficult to maintain the working environment.

JP-A-8-21646 (Pages 1, 2 and 1) JP 57-207738 A (1st, 2nd page, FIG. 1) Japanese Patent Laid-Open No. 10-288392 (first and second pages, FIG. 1)

  An object of the present invention is to provide a floor-surface-guided air-conditioning system that efficiently air-conditions and ventilates a large space such as a factory where a large amount of exhaust is performed by a local exhaust device of a production facility and an exhaust facility of the entire factory.

In order to solve the above problems, the floor-guided airflow air conditioning system of the present invention is an air conditioning system in a large space having a large number of exhaust devices,
An opening having a predetermined opening area penetrating the outer wall is formed on one or more outer walls of the large space, the outside air is taken in, the desired outside air is heated and cooled, and directed toward the floor of the premises. The outside air intake section provided with a heat exchanger that releases the air is provided, and the heated and cooled outside air is conveyed as a floor surface induced airflow by the Counder effect with the floor surface, and after heat exchange in a desired air-conditioned space, from the floor surface The polluted air drifting in the middle layer is raised by the separated rising air current, and is discharged by a local exhaust device arranged on the premises and / or an exhaust device provided on the ceiling or upper wall surface.

  Further, the outside air intake section includes at least a downward outside air intake that avoids wind and rain, an air supply passage provided with a heat exchanger, and an air supply outlet that opens downward.

  The outside air intake port includes an opening door that is opened and closed by a motor, an air supply fan, and a passing air speed detector for intake air, and closes the opening door when a predetermined wind speed / air volume is exceeded. Is not obtained, the air supply fan is operated to discharge the temperature-treated outside air having a predetermined wind speed and air volume from the supply air outlet toward the floor of the premises.

  According to the floor-guided airflow air conditioning system of the present invention, by utilizing the negative pressure generated in a large space having a large number of exhaust devices, the floor-surface-guided airflow along the floor surface is obtained by actively taking in outside air and overheating and cooling it. Since it is transported as a “co-under effect”, the energy cost of the blower mechanism can be reduced, and the floor airflow can be transported to any space. Only the space can be efficiently heated and cooled. That is, it is possible to provide a comfortable environment by floor heating or radiation cooling from the floor surface by the floor surface induced airflow.

  In addition, by taking in outside air, the problem caused by the draft air that has occurred in the past has been eliminated, and after the floor-induced airflow has demonstrated the effect of cooling and heating, it becomes a separation rising airflow, and substances that cause environmental deterioration such as oil mist, dust, and smoke are stagnant. The middle layer stagnant air is effectively sent to the upper exhaust device.

  In addition, there is no need for facilities such as ducts used for conventional air-conditioning conveyance, so that a space layout (for example, an overhead traveling crane, a member conveyance path, etc.) such as a ceiling portion can be freely performed, and the cost of air-conditioning equipment can be suppressed.

In addition, the layout of the outside air intake section and the intake air volume (passing wind speed is 1 to 3 meters / second in consideration of the passage resistance of heat exchangers, etc.) are preliminarily designed based on the heat generation equipment and personnel arrangement in the large space. By doing so, an energy saving effect can be obtained as a minimum heat exchanger.

  The floor-guided airflow air conditioning system of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment of the floor-guided airflow air conditioning system of the present invention.

  The floor-surface-guided air-conditioning system includes an outside air intake section 10 provided at the upper portion of the side wall 100a of the large space building 100, a local exhaust device 21 disposed at a key location on the premises, and a ceiling exhaust device provided on the ceiling 100b. 20 and a floor surface 100c.

  Of the constituent elements of the present invention, the local exhaust device 21, the ceiling exhaust device 20, and the floor surface 100c are configured in advance or planned to be disposed in the large space building 100, The present invention is realized by the outside air intake unit 10 arranged in addition to these. Although one outside air intake 10 is illustrated in FIG. 1, the outside air intake 10 is provided at a plurality of locations corresponding to the size of the large space building 100 and the internal facilities and personnel arrangement.

  The outside air intake portion 10 is provided through the side wall 100a, and is formed by an outside air intake port 11 that opens outdoors, an air supply / discharge port 14 that opens indoors, and a wind tunnel 15 that connects between them. Are provided with an opening door 12a and an air supply fan 12 for controlling the air flow rate, and a heat exchanger 13 for overheating or cooling the ventilation.

  In addition, when the exhaust capability of the local exhaust apparatus 21 and the ceiling exhaust apparatus 20 provided in the large space building 100 is large, outside air is taken in without using the opening door 12a and the air supply fan 12 for controlling the air flow rate. Can do. In such a case, only the open door 12a and the heat exchanger 13 need be provided in the wind tunnel 15 of the outside air intake unit 10.

  The local exhaust device 21 sucks and discharges dust, smoke, oil mist, and the like generated from the processing machine 30 by an exhaust duct 21a. FIG. 1 shows one local exhaust device 21 for a plurality of processing machines 30, but a plurality of these are arranged in the large space building 100.

  The ceiling exhaust device 20 is a fan provided on the ceiling 100b, and a plurality of the ceiling exhaust devices 20 are arranged at important points (not shown).

  Since the inside of the large space building 100 becomes negative with respect to the outdoors due to the operation of the plurality of local exhaust devices 21 and the ceiling exhaust device 20, the outside air intake unit 10 receives outside air from the outside air intake port 11 in the outdoor opening due to a pressure difference. Incorporated.

  At this time, the outside air is heated or cooled by the heat exchanger 13 provided in the wind tunnel 15 and taken into the premises. For this reason, problems, such as the fluctuation | variation of the room temperature by the crevice wind conventionally blown into the large space building 100 without processing, do not occur.

  Further, it is not necessary to use the power for supplying air normally, and an energy saving effect is exhibited. Note that forced ventilation can be performed by operating the air supply fan 12 as necessary. Although not shown, the outside air intake unit 10 is provided with a passing air speed detector for intake air. When a predetermined air speed / air volume (passing air speed of 1 to 3 meters) is exceeded, the opening door 12a is closed and the opening door 12a is opened. However, if the predetermined wind speed / volume cannot be obtained, the air supply fan 12 is automatically operated.

  The opening door 12a is closed at night when the operation of the local exhaust device 21 and the ceiling exhaust device 20 in the factory is stopped or on a holiday to prevent outside air from entering.

  The air supply / discharge port 14 blows out heated or cooled outside air toward the floor, and the airflow reaching the floor is conveyed as a fast airflow along the floor surface due to the Counder effect.

  The floor surface induced airflow C is conveyed to a section where the processing machine 30 and a worker are present, sucked by an exhaust duct 21a attached to the processing machine 30, and from the floor surface by a heating element such as the processing machine 30 and a worker. It peels and becomes the rising airflow A, and is discharged | emitted from the ceiling duct 21b of the ceiling exhaust apparatus 20 or the local exhaust apparatus 21 outdoors.

  At this time, the rising airflow A can efficiently discharge oil mist and dust staying between the floor surface and the roof in the large space building 100 in the direction of the ceiling exhaust device 20.

  FIG. 2 is a plan view showing an embodiment of the floor-guided airflow air conditioning system of the present invention. As shown in FIG. 2, the airflow blown down on the floor surface becomes a floor surface airflow C, and is conveyed over a long distance. The floor airflow C has less frictional resistance than conventional ducts and can be transported far without using power such as a blower fan, which saves energy and reduces equipment costs.

  Further, the floor surface airflow C is transported only to an operating space (or living space) such as an operator, and air conditioning is performed from the floor surface, thereby reducing the energy required for the entire space from the conventional air-conditioning to a predetermined temperature. can do.

  In FIG. 2, the floor airflow C conveyed through the passage rises as a separated airflow in the vicinity of the processing machine 30 provided on both sides.

It is a front view which shows the Example of the floor surface induction | guidance | derivation airflow air conditioning system of this invention. It is a top view which shows the Example of the floor surface induction | guidance | derivation airflow air conditioning system of this invention. It is sectional drawing which shows the conventional air conditioning system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Intake port 3 Heat exchanger 4 Blower 5 Outlet 6 Swing means 7 Nozzle 8 Roof ventilation fan 10 Outside air intake part 11 Outside air inlet 12 Air supply fan 12a Open door 13 Heat exchanger 14 Supply air outlet 15 Wind tunnel DESCRIPTION OF SYMBOLS 20 Ceiling exhaust apparatus 21 Local exhaust apparatus 21a Exhaust duct 21b Ceiling duct 30 Processing machine 100 Large space building 100a Side wall 100b Ceiling 100c Floor surface A Updraft C Floor surface airflow

Claims (3)

An air conditioning system in a large space having a large number of exhaust devices,
An opening having a predetermined opening area penetrating the outer wall is formed on one or more outer walls of the large space, the outside air is taken in, the desired outside air is heated and cooled, and directed toward the floor of the premises. The outside air intake section provided with a heat exchanger that releases the air is provided, and the heated and cooled outside air is conveyed as a floor surface induced airflow by the Counder effect with the floor surface, and after heat exchange in a desired air-conditioned space, from the floor surface Contaminated air drifting in the middle layer is raised by the separated updraft, and is exhausted by a local exhaust device arranged on the premises and / or an exhaust device provided on the ceiling or upper wall surface. system.   The said outside air intake part is equipped with at least the downward external air intake port which avoids a wind and rain, the supply passage provided with the heat exchanger, and the supply air discharge port opened downward, The feature of Claim 1 characterized by the above-mentioned. Floor induction air conditioning system.   The outside air intake port includes an opening door that is opened and closed by a motor, an air supply fan, and a passing air speed detector for intake air. When the predetermined air speed and air volume are exceeded, the open door is closed to obtain a predetermined air speed and air volume. 3. A floor surface according to claim 2, wherein when the air supply fan is not operated, the air supply fan is operated to discharge the temperature-treated outside air having a predetermined air speed and air volume from the air supply outlet toward the floor surface of the premises. Induction airflow air conditioning system.

Images