JP2005049024A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a relatively compact air conditioner capable of reducing energy consumption and appropriate for air-conditioning in a room with a relatively high ceiling, for example, a plant building. <P>SOLUTION: The air conditioner has a returning air port 12a provided at a ceiling part 11 in the room 10 to discharge air in the room 10, an air induction port 3 provided in the room 10 to induce air heated by a heating source 13 provided in the room 10, a blow-out port 6 capable of blowing out air along a floor surface 5 in the room 10 and an air conditioning device 1 for adjusting conditioned air by introducing outside air. In addition, the air conditioner is equipped with an induction unit 4 as a mixing means to mix the conditioned air supplied from the air conditioning device 1 through a duct 2b and air induced by the air induction port 3 and to blow it from the blow-out port 6 into the room 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technique for air-conditioning a target room having a ceiling at a relatively high position such as a factory building.

  The filling room, yeast room, and filtration room, which are part of a manufacturing plant for drinking water such as beer, soft drinks, tea, and coffee, generally have a room temperature of 20 ° C. or less and a humidity of 60 in order to prevent the generation of mold and germs. The air-conditioner is controlled to a clean room of class 100,000.

  For example, as a conventional air conditioner in the filling chamber, the one shown in FIG. 6 has been used. As shown in FIG. 6, the air conditioner introduces indoor return air sucked from a suction port 91 installed in the ceiling portion 90 a of the filling chamber 90 into the air conditioner 92 through the duct 93. After mixing with the outside air introduced from outside the building and adjusting to a predetermined temperature and humidity, the air is fed to a position near the floor surface portion 90b in the filling chamber 90 through the duct 94.

  However, since the filling machine 95 disposed in the filling chamber 90 is a relatively large machine, the filling chamber 90 itself is also large and the ceiling portion 90a is at a high position. The volume of the filling chamber 90 is extremely large compared to the indoor volume of a simple building. Therefore, in order to air-condition the entire interior space of the filling chamber 90, not only an air conditioner having a large processing capacity is required, but also a large amount of energy is consumed to operate it.

  Therefore, in order to solve such problems, various air conditioning technologies have been developed, including a technology that air-conditions only a necessary area instead of air-conditioning the entire interior space of a building (for example, Patent Document 1). ~ 4).

  The temperature stratified cooling system described in Patent Document 1 is a system in which air sucked in the vicinity of the floor inside the building is cooled by an air conditioner, and then cool air is sent near the middle of the building. Energy saving is achieved by omitting the cooling of the non-target region.

  Patent Document 2 describes an indoor air suction means for sucking indoor air near the ceiling, an air conditioner that harmonizes the sucked indoor air and blows it from the blow nozzle, and an air inlet near the ceiling. An air conditioner including an air conditioning duct having an air outlet near a floor surface. Since the blowing nozzle is positioned between the air inlet and the air outlet and is arranged so as to blow conditioned air toward the air outlet, the room air is attracted from the air inlet and the conditioned air It is mixed and pushed out from the air outlet into the room, and temperature stratification is formed in the room.

  The ventilation method described in Patent Document 3 is based on the indoor temperature from the air diffusion port with the air outflow surface in the vertical direction in the lower space having a height from the floor with respect to the height of the person in the indoor space. It is said that fresh air controlled to a low level is slowly discharged so as to spread over the entire lower space at a low wind speed of a predetermined value or less, and an air amount corresponding to the amount of air introduced into the lower space is discharged from the ceiling. Is.

  The air-conditioning method described in Patent Document 4 is an air-conditioning area in which a suction port is provided at a predetermined height of the side wall of the indoor space and a blow-off port is provided below the indoor space with reference to the living space of human bodies and animals and plants. Air conditioning is performed by setting a residential area and a non-managed area.

JP-A-4-3830 (page 2-9) JP-A-7-208754 (page 2-5) Japanese Patent No. 2862149 (pages 2-7) Japanese Patent No. 3082061 (page 2-8)

  In the temperature stratification type cooling facility described in Patent Document 1 (Japanese Patent Laid-Open No. 4-3830), since the cool air is gradually warmed as it descends the cooling region, an upward flow is generated by the warmed air. A descending speed becomes slow, a temperature stratification type cooling cannot be formed, and a cooling effect may fall. Moreover, although the blowing direction of cold wind is set as the side flow, if the amount of blowing is increased, draft wind may be generated in the living area, which may adversely affect the body of the person in the room.

  In the air conditioning technology described in Patent Document 2 (Japanese Patent Laid-Open No. 7-208754), since air drawn from the air inlet draws in air near the ceiling, the highest temperature air and the air conditioner outlet It is mixed with air, and it cannot be said that the air temperature of the stratified distribution is used to the maximum, and in the case of a building with a high ceiling, air conditioning is performed to an unnecessary space to save energy. I can't.

  The ventilation method described in Patent Document 3 (Japanese Patent No. 2862149) is a ventilation method that can maintain a human living area in a comfortable environment without diffusing heat and pollutants generated indoors into the room. The difference between the air supply temperature from the air conditioner and the room temperature is small (for example, the air supply temperature is 19 ° C. with respect to the room temperature of 26 ° C.), and there is no air volume increasing device on the way. There exists a problem of causing the enlargement of the air conditioner and air supply duct which process the whole quantity of air.

  The air conditioning method described in Patent Document 4 (Japanese Patent No. 3082061) is a lower blowing method for both warm air and cold air, and therefore an energy saving effect cannot be expected so much. The low-temperature air supplied from the air outlet flows down along the floor surface due to the difference in buoyancy caused by the temperature difference from the room air, and then flows along the floor surface. In order to obtain a predetermined air supply amount, a large air supply chamber is required. In addition, when the wind speed from the blowout chamber is slow, the cold air does not spread radially but flows in a parallel flow only in the front direction, so that not only the air conditioning state becomes uneven, but in the case of general air conditioning, it is indoors Draft sensation occurs on the person's foot.

  The problem to be solved by the present invention is suitable for air-conditioning the inside of a target room having a ceiling at a high position such as a factory building, and is relatively small in size and capable of reducing energy consumption. Is to provide.

  The air conditioning system of the present invention includes a return air port provided in the ceiling portion of the target room for discharging the air in the target room, and a target room in order to attract air heated by a heat source installed in the target room or Air induction means provided outside only the main body side, an air outlet that can blow out air along the floor of the target room, and air conditioning equipment that adjusts conditioned air by introducing return air and outside air excluding exhaust And mixing means for mixing the conditioned air supplied from the air conditioner and the air attracted by the air attraction means and blowing out the air from the outlet to the target room.

  In the interior of the target room where the heat source is installed, the air heated by the heat source rises and stays in the ceiling, and an air layer with a temperature lower than the ceiling is formed near the height of the heat source. , Temperature stratification tends to be stronger. Therefore, when the conditioned air temperature-controlled by the air conditioner and the air attracted by the air attracting means are mixed and blown out from the air outlet near the floor, this mixed gas spreads quickly along the floor surface, and the heat source As it rises while absorbing heat, temperature stratification is maintained well, and it is possible to prevent the surrounding temperature from rising to the height level of the heat source. It reaches and is partially sent from the return air outlet to the air conditioner outside the room, and the rest is discharged outside.

  In addition, because the conditioned air adjusted by the air conditioner and the attracted air are mixed and supplied to the room, the temperature of the conditioned air supplied from the air conditioner is set low, and the air volume is reduced. Therefore, it is possible to reduce the air blowing capacity of the air conditioner and to reduce the size of the air duct, and to reduce the size of the air conditioning equipment.

  Furthermore, by mixing the conditioned air adjusted by the air conditioning equipment and the air attracted by the air attracting means, and blowing it along the floor surface from the air outlet, only the area lower than the air attracting port is air-conditioned and higher than the air attracting means By excluding the area from the air-conditioning target, relatively high-temperature air staying here is sucked in from the return air outlet, and a part thereof is discharged to the outside, so that the temperature rise inside the building can be avoided. Therefore, compared with the case where the whole building is air-conditioned, energy consumption can be reduced. In addition, since the air-conditioning target area is reduced and high-temperature air is exhausted, the processing capacity of the air-conditioning equipment can be reduced and the supply path of the conditioned air can be reduced.

  Here, it is also possible to provide a heat exchanger for exchanging heat between the outside air introduced by the air conditioner and the air discharged from the exhaust port provided instead of the return air port. By providing such a heat exchanger and switching the air path at the necessary time, the heat of the exhaust can be recovered and effectively used when the outside air temperature is low. Energy can be further reduced.

  On the other hand, it is desirable that the height position of the air attracting means is substantially equal to the height of the heat source. By providing air attraction means at such a height, the air in the intermediate temperature layer formed near the height of the heat source can be intensively attracted, so that air conditioning efficiency is improved and air attraction means Since the higher region is not cooled too much, energy consumption can be reduced.

  In this case, by arranging the plurality of air inlets facing each other, the air in the intermediate temperature layer formed in the vicinity of the height of the heat generation source can be reliably and promptly drawn, so that the air conditioning efficiency is improved. . Moreover, the state of the air in the lower area inside the building can be kept uniform.

  The present invention has the following effects.

(1) A target room for attracting air heated by a return air outlet or an exhaust port provided in a ceiling portion of the target room and a heat source installed in the target room in order to discharge air in the target room Air induction means provided inside, air outlets that can blow out air along the floor in the target room, air conditioning equipment that adjusts conditioned air by introducing outside air, and harmony supplied from the air conditioning equipment By providing the mixing means for mixing the air and the air attracted by the air induction means and blowing out the air from the outlet to the inside of the target room, it is possible to reduce energy consumption and downsize the equipment.

(2) By providing a heat exchanger for exchanging heat between the outside air introduced by the air conditioner and the air exhausted from the exhaust port, the energy consumption is further reduced when the outside air temperature rises can do.

(3) By making the height position of the air attracting means substantially equal to the height of the heat source, air in the intermediate temperature layer formed near the height of the heat source can be intensively attracted, In addition to improving the air conditioning efficiency, it is not necessary to overcool the region higher than the air attracting means, so that energy consumption can be reduced.

(4) By arranging a plurality of air inlets facing each other or side by side, the air in the intermediate temperature layer formed in the vicinity of the height of the heat generation source can be reliably and promptly attracted, so the air conditioning efficiency is high. In addition to improving, it is possible to keep the air in the lower area inside the building in a uniform state.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an elevation view showing an air conditioner according to a first embodiment of the present invention.

  The air conditioning equipment of the present embodiment includes a return air port 12 a provided in the ceiling portion 11 inside the target chamber 10 for discharging air inside the target chamber 10, and a heat source 13 installed inside the target chamber 10. In order to attract the air heated by the air, the air inlet 3 provided inside the target chamber 10, the air outlet 6 capable of blowing air along the floor surface 5 inside the target chamber 10, and one return air The air conditioning device 1 that adjusts the conditioned air by introducing the head and the outside air, the conditioned air fed from the air conditioning device 1 through the duct 2b and the air attracted by the air induction port 3 and mixed from the air outlet 6 And an attracting unit 4 which is a mixing means for blowing out into the chamber 10.

  The air conditioner 1 includes a temperature control coil unit 15, a blower fan 16, and a filter 17. The air that has been sucked by the fan 19 from the return air port 12 a through the duct 2 a and raised from room temperature, for example, 25 ° C. and the outside air OA. And the conditioned air adjusted to, for example, a temperature of 10 ° C. is adjusted in the temperature control coil unit 15. The conditioned air adjusted by the air conditioner 1 is sent to the attraction unit 4 through the duct 2b.

As shown in FIG. 1, in the target chamber 10 where the heat source 13 is installed, the air heated by the heat source 13 rises and stays in the ceiling portion 11, and near the height of the heat source 13. The temperature stratification is formed so that an air layer having a temperature lower than the staying air in the ceiling portion 11 is formed. In the present embodiment, the conditioned air adjusted at the air conditioner 1 with a temperature of 10 ° C. and the air with a temperature of 20 ° C. attracted from the air inlet 3 are mixed in the induction unit 4, for example, at a temperature of 15 ° C. The mixed gas G is blown out from the outlet 6 into the target chamber 10.

  The mixed gas G blown out from the blower outlet 6 spreads quickly along the floor surface 5 and rises while absorbing the heat of the heat source 13, so that the temperature rise around the height level of the heat source 13 can be prevented. A part of the mixed gas heated to a relatively high temperature reaches the ceiling portion 11 and moves to the outside of the target chamber 10 from the return air port 12a, and a part thereof is sent to the air conditioner 1, and the rest is outdoors. Is discharged.

  Thus, since the conditioned air adjusted by the air conditioner 1 and the air attracted from the air induction port 3 are mixed and supplied to the inside of the target room 10, the temperature of the conditioned air supplied from the air conditioner 1 Can be set low and air flow can be reduced. Therefore, the air blowing capability of the air conditioner 1 can be reduced, the duct 2b can be downsized, and the air conditioning equipment can be downsized.

  In addition, the mixed gas G formed by mixing the conditioned air adjusted by the air conditioner 1 and the air attracted from the air attracting port 3 is blown out from the air outlet 6 along the floor surface 5, so that the air attracting port 3. Only the low region is air-conditioned, the region higher than the air inlet 3 is excluded from the air-conditioning target, and the relatively high temperature air staying in the ceiling portion 11 is partially returned to the air-conditioning equipment 1 via the return air port 12a. The temperature rise inside the target chamber 10 can be avoided by feeding and discharging a part to the outdoors.

  Therefore, the energy consumption of the air conditioner 1 can be reduced as compared with the case where the entire target room is air-conditioned. Further, since the air conditioning target area is reduced, it is possible to reduce the processing capacity of the air conditioning equipment 1 and the duct 2b that is the supply path of the conditioned air, so that the air conditioning equipment can be downsized.

  Next, based on FIG. 2, FIG. 3, the air-conditioning equipment which is 2nd Embodiment of this invention is demonstrated. FIG. 2 is an elevation view showing the air conditioning equipment according to the second embodiment, and FIG. 3 is a partial plan view of the air conditioning equipment shown in FIG. 2 and 3, the portions denoted by the same reference numerals as those in FIG. 1 are portions exhibiting the same functions and effects as the components of the air conditioning equipment of the first embodiment, and thus description thereof is omitted.

  In the air conditioning equipment of this embodiment, the air inlet 3 is arranged at the same height level as the heat source 13 installed in the target room 10, and the attracting unit 41 is arranged outside the target room 10. The unit 41 is integrally provided with the air outlet 6. A high performance filter 17a and a blower fan 26 are arranged in the attracting unit 41.

  The air conditioner 1 includes a blower fan 16 and a temperature control coil unit 15, a total heat exchanger 18 is provided adjacent to the air conditioner 1, and a filter 17 is disposed on the introduction path of the outside air OA. After the conditioned air adjusted to a predetermined temperature and humidity in the air conditioner 1 is supplied to the attraction unit 41 through the duct 2b and mixed with the air attracted from the air induction port 3, the mixed gas G is formed. The air is blown out along the floor surface 5 from the air outlet 6.

  As in the case of the first embodiment, the mixed gas G becomes an upward flow while absorbing the heat of the heat source 13, and part of it reaches the non-air-conditioned area A, instead of the return air port 12a of the first embodiment. Since it is returned to the air conditioning equipment 1 as exhaust EA through the duct 2a from the exhaust port 12b provided in the heat recovery and then released into the atmosphere, the same effect as the air conditioning equipment of the first embodiment can be obtained. In the present embodiment, since the height position of the air inlet 3 is substantially equal to the height of the heat source 13, the air in the intermediate temperature layer formed near the height of the heat source 13 can be intensively attracted. Yes, and demonstrates excellent air conditioning efficiency.

  Moreover, in this embodiment, since the several induction unit 41 which incorporated the ventilation fan 26 and the high performance filter 17a is provided in the outdoor, the clean air filtered with the high performance filter 17a is uniformly distributed to the inside of the target chamber 10. Can be supplied to. Furthermore, as shown in FIG. 3, the plurality of air outlets 6 are arranged in parallel with the wall surface portion 10 c inside the target chamber 10, so that clean air is effectively applied to portions where high cleanliness is required. Can be supplied.

  On the other hand, since the total heat exchanger 18 for exchanging heat between the outside air OA introduced by the air conditioner 1 and the air discharged from the exhaust port 12b is provided, at a time when the outside air temperature becomes high, The heat of the exhaust gas can be recovered and used effectively, and the energy consumption can be further reduced. For example, in the summer, the temperature of the air discharged from the exhaust port 12b may be lower than the outside air OA. In that case, the exhaust EA and the outside air OA are heat-exchanged by the total heat exchanger 18 and cooled by heat recovery. The load can be reduced. When the outside air OA is lower than the exhaust gas EA, the bypass damper 20 is opened and the outside air damper 21 is closed, and the exhaust side damper 23 and the return air side damper 22 are opened for adjustment, and the exhaust gas is divided into return air and exhaust gas.

  Next, the air conditioning equipment which is 3rd Embodiment of this invention is demonstrated based on FIG. 4, FIG. FIG. 4 is an elevation view showing the air conditioning equipment according to the third embodiment, and FIG. 5 is a partial plan view of the air conditioning equipment shown in FIG. 4 and 5, the portions denoted by the same reference numerals as in FIGS. 1 to 3 are portions that exhibit the same functions and effects as the components of the air conditioning equipment of the first and second embodiments. Is omitted.

  In the present embodiment, since the six attracting units 42 having the air attracting openings 3 are arranged so as to face each other, the intermediate temperature layer formed near the height of the heat source (not shown). It is possible to attract air reliably and quickly, and excellent air conditioning efficiency can be obtained. Further, the air in the region below the air inlet 3 can be kept in a uniform state.

  The air conditioning system according to the present invention is an interior of a building having a ceiling at a relatively high position, such as a filling room, a yeast room, a filtration room, etc., which are part of a manufacturing plant for drinking water such as beer, soft drinks, tea and coffee. It can be widely used for air conditioning.

It is an elevation view which shows the air-conditioning equipment which is 1st Embodiment of this invention. It is an elevation view which shows the air-conditioning equipment which is 2nd Embodiment of this invention. It is a partial top view of the air conditioning equipment shown in FIG. It is an elevation view which shows the air-conditioning equipment which is 3rd Embodiment of this invention. It is a partial top view of the air conditioning equipment shown in FIG. It is an elevational view showing conventional air conditioning equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning equipment 2a, 2b Duct 3 Air induction port 4,41,42 Attraction unit 5 Floor surface 6 Air outlet 10 Target room 10c Wall surface part 11 Ceiling part 12a Return air port 12b Exhaust port 13 Heat source 15 Temperature control coil unit 16, 19, 26 Blower fan 17 Filter 17a High performance filter 18 Total heat exchanger 20 Bypass damper 21 Outside air damper 22 Return air damper 23 Exhaust air damper A Non-air-conditioned area G Mixed gas OA Outside air EA Exhaust

Claims (4)

  In order to attract air heated by a return air outlet or an exhaust port provided in a ceiling portion of the target room for exhausting air in the target room and a heat source installed in the target room, the target room inside Alternatively, air conditioning means is adjusted by introducing air induction means provided outside only the side of the main body, a blowout port capable of blowing air along the floor surface of the target room, and return air and outside air excluding exhaust. Air conditioning equipment to be mixed, and mixing means for mixing the conditioned air supplied from the air conditioning equipment and the air attracted by the air attraction means and blowing out the air from the outlet to the inside of the target room Air conditioning equipment.   The air conditioning equipment according to claim 1, further comprising a heat exchanger for exchanging heat between outside air introduced into the air conditioning equipment and air discharged from the exhaust port.   The air conditioner according to claim 1, wherein a height position of the air attracting means is substantially equal to a height of the heat generation source.   The air conditioning equipment according to claim 1, 2 or 3, wherein the plurality of air attracting means are arranged to face each other or in parallel.

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