JP2006029748A - Air-conditioning and ventilation combined system and air-conditioner with air duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system with a naturally ventilating system and a general air-conditioning or outside air cooling system combined for sufficiently developing the function of the naturally ventilating system in particular. <P>SOLUTION: An outside air introduction port 4 and a ventilating air flow-out port 16 are provided in two opposed faces of an air-conditioned space A. The air duct 8 formed into an approximately horizontal cylinder is protruded inward from the outside air introduction port 4. An air feed duct 22 in which an air-conditioner 30 is provided on the way branches from part of the air duct and extends to an air outlet 40 facing the air-conditioned space. Besides, a flow path switching damper 14 is formed at a branching position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioning and ventilation system and an air conditioner with a ventilation path.

  2. Description of the Related Art Conventionally, in a building such as a building, in order to maintain a comfortable thermal environment, air conditioning equipment is used for air conditioning and humidity adjustment in summer. Also, mainly in the middle season of spring and autumn, from the viewpoint of energy saving, a ventilation system is adopted in which the atmospheric wind passes through the building as it is (Patent Document 1), and the room temperature is higher than the outside air temperature. Outside air cooling is also performed in which outside air is sucked and replaced with room air when the temperature is high (Patent Document 2).

  These general air conditioning, natural ventilation, and outdoor air cooling methods are generally implemented separately, but the environment around the building is constantly changing. For example, as shown in FIG. The average wind speed at 20m and 30m above the ground is minimum at around 7 o'clock and maximum at around 17 o'clock. Based on such changes in atmospheric conditions, for example, it is desirable to use air conditioning by general air conditioning during the day, natural ventilation in the evening when cool winds blow, and outdoor air cooling when the humidity is high after rain. It is both uneconomical and inconvenient to construct and operate each type of system separately in response to such a request.

On the other hand, air conditioning systems that use natural ventilation in an auxiliary manner have also been proposed (Patent Document 3 and Patent Document 4), which are blower ducts that extend from the outside air inlet 90 to the floor as shown in FIG. The air conditioner 92 is installed in the vertical part of 91, the ventilation opening a is opened in the horizontal part upper surface of a ventilation duct, and the flow-path switching damper 93 is provided between these ventilation openings and an air conditioning machine.
JP 2003-232548 A JP 2002-181353 A JP 2000-266362 A JP 2000-266363 A

  Unlike an air conditioning system that sucks outside air using a blower fan, a natural ventilation system takes outside air into a building by natural wind power, but the wind speed in nature is not so high. For example, the annual average wind speed at 20 m and 30 m above the ground at a certain observation point mentioned above is about 3.7 m / s and 3.5 m / s as shown in FIG. 18, and the wind speed value with the highest appearance rate is shown in FIG. It is about 2.2m / s. Therefore, in the natural ventilation system, it is important to efficiently obtain ventilation at a low wind speed.

  However, the above-mentioned Patent Document 3 and Patent Document 4 are merely a supplementary opening of a ventilation port in a part of the air passage of the air conditioning system, and the ventilation port is opened on the upper surface of the horizontal portion of the air passage. Therefore, there is a problem that a large fluid resistance is generated when air passes through the opening, and the natural ventilation rate is reduced.

  On the other hand, it is possible to change the design of the ventilation opening so as to open the inner surface b of the vertical portion upper end portion of the air passage as shown in FIG. 20, for example. It is designed on the premise of the air blowing distance, and when a part of it is used for the natural ventilation system, various problems occur. For example, even if the flow path resistance in the vicinity of the ventilation port can be reduced by changing the position of the ventilation port, the flow resistance in the section from the outside air introduction port to the ventilation port is the same in the first place. It is doubtful whether the amount can be increased. In addition, when the ventilation hole is changed from an upper opening to an opening inward of the room, rainwater may be blown through the ventilation opening during rainfall.

  Therefore, the present invention is a system that uses both a natural ventilation system and a general air conditioning system or an outside air cooling system, and in particular, the ventilation that protrudes inward from the outside air introduction port so that the function of the natural ventilation system can be sufficiently exhibited. It aims at proposing what protruded the air-conditioning channel with an air conditioner from the part of the path via the channel change damper.

  The first means is an air conditioning / ventilation system, in which an outside air inlet 4 and a ventilation outlet 16 are provided at appropriate locations on the wall surface defining the air conditioned space A, and a substantially horizontal cylindrical ventilation path from the outside air inlet 4. 8 is provided inwardly projecting from a part of the ventilation path 9 and an air passage 22 having an air conditioner 30 in the middle is extended to the outlet 40 to the air-conditioned space. The flow path switching dampers 14 and 26 are formed in the same.

  The “appropriate location of the wall surface defining the air-conditioned space A” is preferably two opposite surfaces of the air-conditioned space, particularly two opposite surfaces in the main wind direction (one surface on the main wind direction side and one surface on the opposite side of the main wind direction). However, if this is not possible due to the construction of the building, for example, the outside air inlet 4 is provided on one of the one side opposite to the main wind direction and the other side perpendicular to the main wind direction, and A ventilation outlet 16 may be provided on the other side. The one surface in the main wind direction may be one surface opposite to the main wind direction, and sufficient ventilation can be obtained through an outside air inlet or a ventilation outlet provided on the surface depending on the time zone.

  “Outside air inlet” and “ventilation outlet” indicate the inlet and outlet of the airflow when the wind blows from the direction facing the outside air inlet, for example, the direction facing the ventilation fan This is not to exclude the configuration in which ventilation is generated from the ventilation outlet to the outside air inlet when the wind blows from the outside. Furthermore, the opening part disclosed as the outside air inlet in the illustrated example described later is intermittently arranged along the inner surface of the outer peripheral wall of the building, for example, and air is passed from the opening part on the one half side of the building to the opening part on the other half part depending on the wind direction. It is good also as a structure obtained.

  The “ventilation path” is desirably a wide-mouthed short cylinder type in order to reduce the flow path resistance, but a certain length of the path is necessary from the viewpoint of measures against water drops during rain. Actually, it is desirable to take a distance of 30 cm or more from the outside air introduction port (or the outside surface of the louver when the louver is provided outside the outside air introduction port) to the branch point 9 to the air conditioning duct for connecting the air conditioner.

  Further, it is desirable that the cross-sectional area of the ventilation path is substantially constant over the entire length in the longitudinal direction (there is no constricted part, suddenly enlarged part, or suddenly reduced part) in order to reduce the flow resistance. The shape with the least resistance is a straight cylinder, but in order to circumvent obstacles such as building structures other than the air conditioning system, a vertical stepped part (or a crank-shaped part) A step portion) can be provided. However, even in this case, it is desirable that the flow path portions inside and outside the stepped portion are substantially parallel and that at least a part of the cross-sectional area of these flow path portions overlap when viewed from the inside and outside of the building.

  The “horizontal cylinder” may have a certain degree of inclination with respect to the horizontal plane, and may have an inclination of about 1/30 as a countermeasure against water particularly during rainfall.

  The “outside air introduction port” and the “ventilation outlet” are preferably installed in the upper part of the air-conditioned space, thereby eliminating the heat pool in the upper part of the air-conditioned space.

  The “flow path switching damper” may be formed in the middle portion in the longitudinal direction of the ventilation path, and thereby a space for installing a later-described louver can be secured at the outer end and the inner end of the ventilation path. The flow path switching damper may be formed as a rotating plate that can open and close each opening of the connection duct to the ventilation path and the air conditioner, but it is long and heavy corresponding to the flow path area of the ventilation path Therefore, it is preferable to provide a pair of flow path switching dampers controlled so that when one is open, the other is closed on the ventilation passage side and the connection duct side, and the flow path switching damper on the ventilation path side May be formed of a plurality of rotating plates. Further, the flow path switching damper may be an airtight damper having improved airtightness with a joining edge portion with each flow passage inner surface (and a connection edge portion between the respective rotating plates when formed with a plurality of rotating plates), Specifically, an elastic material such as silicon rubber is preferably used at least for the joint portion.

  The “branch point” includes a flow path portion in the vicinity of the flow path branch point.

  The second means includes the first means, and the air conditioner 30 is installed below the ventilation path 8.

  This configuration is for effective use of the floor area occupied by the air conditioner. In other words, the width of the right and left sides of the ventilation path 8 is approximately the same as that of the air conditioner so that the ventilation path 8 is approximately within the occupied area. Or less.

  The third means includes the first means or the second means, and the air conditioner 30 is installed along the building outer wall B that partitions the air-conditioned space A, and the ventilation path 8 is At least one of the opening surfaces of the ventilation inlet 10 and the outside air inlet 4 formed at the inner end surface of the ventilation path 8 protrudes inwardly to the same extent as the distance from the outer wall B to the inner surface 31 of the air conditioner 30. The parts are overlapped when viewed from the inside and outside.

  The fourth means includes the first means, the second means, or the third means, and the louvers 6 and 12 are installed at the outside air inlet 4 and the ventilation inlet 10.

  These galleries desirably have a function of suppressing the entry of rainwater and dust and a function of blocking the incidence of sunlight. In order to further enhance the dustproof effect, a dustproof filter (for example, a Saran filter) can be installed at an appropriate place in the ventilation path. The coarsest filter has a pressure loss of 2 Pa at a wind speed of 1 m / s on the ventilation surface, and a pressure loss of 6 Pa at 2 m / s. In the present invention, the air flow speed can be reduced by providing a substantially horizontal cylindrical air passage designed to reduce the flow resistance separately from the air conditioning duct, so the necessary air volume can be secured even if a filter is installed. it can.

  It should be noted that the effective opening area of the louver provided on the outside air introduction port 4 side is desirably provided so as to coincide with the flow passage area of the ventilation passage, whereby the width of the flow passage between the louver and the ventilation passage is increased. Is substantially constant, and the flow path resistance can be reduced.

The fifth means includes any one of the first to fourth means,
A natural ventilation mode in which the cool breeze taken from the outside through the ventilation path 8 passes through the air-conditioned space A and flows out to the outdoors;
Air in the air-conditioned space is air-conditioned through the return air passage 42, or a small amount of outside air that is hotter than the air temperature in the air-conditioned space is passed through the air passage between the outside air inlet 4 and the flow path switching damper 14, respectively. A normal cooling mode in which the air is sucked into the machine 30 and cooled, and the cooling air is blown out from the air outlet 40 to the air-conditioned space A side;
Outside air having a temperature lower than the temperature in the air-conditioned space is sucked into the air conditioner 30 through the air passage between the outside air inlet 4 and the flow path switching damper 14, and the air-conditioned space is kept at the same temperature from the air outlet 40. Outside air cooling mode to blow out to the side,
The operation state can be automatically switched between.

  The “natural ventilation mode” is preferably performed when the outside air temperature is 15 ° C. to 26 ° C. Note that, in the natural ventilation mode alone, a mode in which natural ventilation and general cooling are used together can be taken when the indoor heat cannot be sufficiently removed. In addition, when the outdoor wind speed is sensed by a sensor and the wind speed is completely absent (or the average wind speed within a predetermined time is below the reference value), the controller described later changes the system mode to the normal cooling mode or the outside air described below. It can also comprise so that it can switch to air_conditioning | cooling mode.

  In the “normal cooling mode”, in order to save energy, only the minimum amount of air necessary for air purification is introduced from the outside air inlet, and the air sucked from the indoor side is cooled by the air conditioner 30 to the indoor side. It is desirable to use a circulating type.

  The condition for performing the “outside air cooling mode” is that at least the outside air temperature is lower than the room temperature. This is sufficient when there is no wind, but when there is wind outside the building, the heat content of the outside air ( It is more accurate if the enthalpy is lower than that of room air. Further, this mode is desirably performed when the outside air temperature is 11 ° C. to 26 ° C., and when the outside air humidity is high, such as in the rainy season, it may be dehumidified by an air conditioner.

  The automatic switching of the operating state can be performed based on the temperature and humidity of the outside air (or based on the temperature and humidity of the air-conditioned space in addition to the temperature and humidity of the outside air).

  Specifically, when the room temperature is a reference value (for example, 26 ° C.) or more, a general cooling mode is performed. When the room temperature is the reference value or less, the humidity is further set to a predetermined reference value (for example, 70%) or more. If there is, the outside air cooling mode is carried out, and if the humidity is below the reference value, the natural ventilation mode is carried out. Further, in the natural ventilation mode, the room temperature of the air-conditioned space A is checked. For example, when the room temperature is higher than a specified value, the air conditioner 30 is supplementarily operated, and a small amount of air is sucked and cooled from the indoor side. You may perform the auxiliary air_conditioning | cooling to return to. In order to enable these operations, it is preferable to install a humidity temperature sensor outside the building and in the air-conditioned space, and to provide a control device that controls the operation of the air conditioner 30 and the flow path switching damper 14.

The sixth means includes the fifth means,
In addition to the natural ventilation mode, the normal cooling mode, and the outside air cooling mode,
Cooling air taken from outside through the ventilation path 8 is sucked and cooled to the air conditioner 30 through the return air path 42 while passing through the air conditioning space A and flowing out to the outdoors. A ventilation / cooling combined mode in which the cooling air is blown from the outlet 40 toward the air-conditioned space A can be selected, and the selection is automated by the control device 36.

  The seventh means includes any one of the first to sixth means, and the outside air inlet 4 and the ventilation outlet 16 are open to the outer peripheral wall B of the building, and The deflection angle θ of the ventilation direction flowing out at a right angle to the ventilation outlet 16 is 90 ° or less with respect to the ventilation direction introduced at a right angle to the outside air introduction port 4.

The eighth means includes any one of the first means to the sixth means, and the air-conditioned space A includes an outer outer wall portion B ₁ and an inner side of the building having an upward air-blowing space 70 in the central portion. It is formed between the outer wall portion B _2, and the outside air inlet 4 is opened on one of these wall portions, and the ventilation outlet 16 is opened on the other.

  The ninth means is an air conditioner with a ventilation path, which is provided with a ventilation path 8 penetrating in the front-rear direction in the upper part of the casing 50, branching 9 from the middle part in the front-rear direction of the ventilation path, and cooling means 32 and air blower. The air passage 22 leading to the air outlet 62 through the fan 34 is opened, and the flow path switching dampers 14 and 26 are formed at the branch point 9, and the return air opening 60 opened at a proper position of the casing 50 is connected to the air fan 34. Communicating with

  This air conditioner integrates the main part of the system of the present invention, which integrates natural ventilation, general cooling, and outside air cooling, as a single device.

  The upper part of the casing 50 can be formed wider in the left-right direction with respect to the front-rear direction, which is the opening direction of the ventilation path.

  The tenth means is an air conditioner with a ventilation path, which communicates the casing 50, a ventilation path forming chamber 64 that opens in the front-rear direction above the casing, the longitudinal intermediate portion of the ventilation path, and the casing 50. And a branch duct 66 for supporting the ventilation path forming chamber 64, and the flow path switching dampers 26, 14 are installed inside each of the branch ducts and the ventilation path 8, and the flow path on the branch duct side is provided. While opening the air passage 22 from the switching damper 26 to the air outlet 62 through the cooling means 32 and the air blowing fan 34 built in the casing 50, the air return fan 60 opened at a proper position of the casing 50 is also connected to the air blowing fan 34. Communicating with

  The ventilation path forming chamber 64 can be formed to be wide from side to side or up and down with respect to the front-rear direction which is the opening direction of the ventilation path.

  The eleventh means includes the ninth means or the eleventh means, and the air blowing port 62 serves as a connection port to the air conditioning air supply duct.

The invention according to the first means has the following effects.
○ Natural ventilation system and air conditioning system are integrated as one system. For example, in response to changes in the environment outside the building, natural ventilation and cooling using an air conditioner (including both general cooling and outside air cooling) Switching is possible with one touch, which is convenient.
○ Because the air passage 22 protrudes from a part of the substantially horizontal cylindrical air passage 8 inward from the outside air introduction port 4, the opening and length of the air passage 8 are natural in advance. Since it can be designed for ventilation, natural ventilation can be secured sufficiently. In general air conditioning, the minimum required amount of outside air can be sucked from the outside air inlet 4 by the air conditioner 30. The same operation is possible.

  According to the second aspect of the invention, since the air conditioner 30 is installed below the ventilation path 8, the maintenance of the air conditioner 30 is easy, and the space above the air conditioner 30 is effectively used as the ventilation path. The floor occupying area of the entire system can be reduced.

  According to the invention relating to the third means, since the projecting length of the ventilation path 8 is the same as the distance from the building outer wall B to the inner surface of the air conditioner 30 installed along the outer wall, both the inner and outer sides of the ventilation path The air flow inlet 10 and the outside air inlet 4 can be positioned close to each other, and the opening surfaces of these both ports overlap at least partially when viewed from the inside and outside directions, thereby reducing fluid resistance. can do.

  According to the fourth aspect of the invention, since the louvers 6 and 12 are installed in the outside air inlet 4 and the ventilation inlet 10, the infiltration of rainwater and dust can be suppressed, and the natural ventilation system and air conditioning are further provided. It is economical because the external gallery is shared with the air conditioning system using the machine.

  According to the fifth aspect of the invention, since the operation state can be automatically switched between the natural ventilation mode, the normal cooling mode, and the outside air cooling mode, it is most suitable according to the external environment. A mode can be automatically selected at any time to achieve a comfortable thermal environment.

  According to the sixth aspect of the invention, since the ventilation / cooling combined mode can be selected in addition to the natural ventilation mode, the general cooling mode, and the outside air cooling mode, the room can be used only by natural ventilation even if there is a certain amount of wind. When it is not possible to sufficiently eliminate the heat, it is possible to save energy by combining natural wind power and the mechanical power of the air conditioner.

  According to the seventh aspect of the present invention, the deflection angle θ of the airflow direction flowing out at right angles to the airflow outlet 16 with respect to the airflow direction introduced at right angles to the outside air inlet 4 is 90 ° or less. Therefore, sufficient natural ventilation can be obtained even on days with weak winds.

According to the eighth aspect of the invention, the outside air inlet B ₄ and the inner outside wall B _{2 of the} building having the upward air-blowing space 70 in the center are provided with the outside air inlet 4 on one side and the ventilation flow on the other. Since each of the outlets 16 is opened, ventilation from the outside of the building to the atrium space side can be promoted by the chimney effect of the atrium space 70.

  According to the ninth to tenth aspects of the invention, the main part of the system of the present invention, which integrates natural ventilation, general cooling, and outside air cooling, is a single device. If it is installed at a required place in the building, the piping of the supply and exhaust lines of the main part of the system can be completed, which is convenient.

  According to the invention relating to the eleventh means, since the air blowing port 62 is the connection port 72 to the air conditioning air supply duct, the present air conditioner is incorporated into a part of the existing air conditioning air system, so that the present application can be easily performed. Air conditioning and return air system can be constructed.

  1 to 6 show an air conditioning and ventilation system according to the present invention.

  In FIG. 1, symbol A represents an air-conditioned space to which the present system is applied, and this space is the interior of a building room in the illustrated example. B is the outer wall of the building. C is a U-shaped partition wall that surrounds the air conditioner, which will be described later, and an opening / closing door (not shown) may be attached to the front lower portion of the partition wall.

  This system is formed by the natural ventilation unit 2, the air conditioning unit 20, and the sensor unit 46.

  The natural ventilation portion 2 is formed by an outside air introduction port 4, a ventilation path 8, and a ventilation outlet 16.

  The outside air inlet 4 is open to the outer wall B of the building, and is connected to the upper portion of the external gallery 6 at the opening surface. The external gallery has a function of blocking solar radiation and a function of suppressing intrusion of rainwater and dust. In the illustrated example, an external louver is formed in a chamber box, and the box is connected to a ventilation path described later. Since the opening ratio of the external gallery is generally about 33%, in this case, the opening area is set to be about three times the flow area of the ventilation path described later, and the effective opening area of the ventilation path and the external gallery is the same. Good. At this time, if the distance between the opening of the external louver 6 and the upstream portion of the ventilation path 8 is too short, the gradient between the two becomes steep and the flow resistance is increased, so that outside air is generated even if the wind speed is low. It is necessary to have a length that can ensure a smooth gradient.

  The ventilation path 8 is a wide-angled quadrangular cylindrical member projecting inwardly from the outside air introduction port 4. A ventilation inlet 10 is opened at an inner end surface of the ventilation path 8, and the ventilation inlet 8 is provided in the ventilation inlet. The internal louver 12 is attached. In addition, the inner end of the air passage 8 in the illustrated example penetrates the upper front portion of the partition wall C and is locked to the through hole. Further, a first flow path switching damper 14 is installed in the longitudinal middle portion of the ventilation path 8, and a duct leading to the air conditioner is hung down from the flow path switching damper as will be described later. The ventilation path 8 is formed in a straight cylinder shape and a large opening so that a large air volume can be obtained even at a low wind speed. For the same reason, it is desirable that the length of the ventilation path 8 be shorter than the size of the opening. However, if the ventilation path 8 is too short, rainwater easily enters along with the outside air during rainfall, so the passage length is determined in consideration of this point. Further, it is desirable that a sound absorbing material made of water-repellent glass wool (glass wool bonded with water-resistant cloth) or the like is attached to the inner surface of the ventilation path 8.

  The ventilation outlet 16 opens in the outer wall B of the building on the opposite side to the outside air inlet 4. The opening ratio of the ventilation outlet is about 80 to 90%. Therefore, the opening area of the ventilation outlet is preferably 1.1 to 1.25 times the flow passage area of the ventilation path.

  The air conditioning unit 20 is formed by a blower passage 22 and a return air passage 42.

  The air passage 22 includes a connection duct 24, an air conditioner 30, and an air duct 38.

  The connection duct 24 branches off from the ventilation path portion immediately upstream of the first flow path switching damper 14 and hangs down directly below. A second flow path switching damper 26 is formed in the connection duct. ing. The first and second flow path switching dampers 14, 26 may be controlled so that when one is open, the other is closed. The second flow path switching damper may be capable of adjusting the air volume.

  The air conditioner 30 has a box shape that is flat on the left and right along the inner surface of the building outer wall B, and is disposed immediately below the ventilation path 8. The air conditioner 30 incorporates a cooling means 32 such as an air conditioning coil and a blower fan 34.

  The control device 36 is configured to control the flow path switching dampers 14 and 26 and the blower fan 34 based on the outside air temperature humidity and indoor temperature and humidity data from the sensor unit, which will be described later, and to change the air conditioning processing mode. is doing.

  The blower duct 38 has a blowout opening 40 that extends to the ceiling side of the air-conditioned space A with one end communicating with the blower fan 34 of the air conditioner 30 and opens downward.

  The return air path 42 has one end connected to the air conditioner 30 and the other end protruding through the partition wall C and protruding into the air-conditioned space A. The return air passage 42 is provided with an opening / closing valve.

  The sensor unit 46 is installed at an appropriate place between the outer wall B of the building and the air-conditioned space A, and is attached to the control device 36.

  In the above configuration, when the outside air temperature is, for example, about 15 ° C. to 24 ° C., the first flow path switching damper 14 may be opened and the second flow path switching damper 26 may be closed as shown in FIG. Thus, the wind flowing in from the outside air inlet 4 enters the ventilation inlet 10 through the ventilation path 8, and the wind passes through the upper part of the air-conditioned space A, and the ventilation outlet 16 together with the heat reservoir in the upper part of the space. Discharged to the outdoors.

  When the outside air temperature is 24 ° C. to 28 ° C. and the enthalpy is lower than the air-conditioned space, the first and second flow path switching dampers 14 and 26 are the same as FIG. The fan 34 is operated, the air in the air-conditioned space A is sucked through the return air passage 42, cooled by the air conditioner 30, and blown out from the outlet 40, thereby suppressing energy consumption. The cooling effect can be given.

  If the outside air temperature is high even when the outside air temperature is 24 ° C. to 28 ° C., the first flow path switching damper 14 is closed and the second flow path switching damper 26 is closed as shown in FIG. The air blower 34 is operated and the outside air containing moisture is sucked from the outside air inlet 4, dehumidified by the air conditioner 30, and ejected from the outlet 40 to the air-conditioned space A. At this time, the valve with the return air passage 42 is closed.

  Further, when the outside air temperature becomes 28 ° C. or more, as shown in FIG. 3, the air in the air-conditioned space A is sucked through the return air passage 42, the first flow path switching damper 14 is closed, and the second flow path is closed. What is necessary is just to inhale the minimum amount of outside air necessary for air purification, for example, by narrowing the opening of the switching damper 26.

  FIG. 6 shows a modification of the structure of the ventilation path 8 of the air conditioning / ventilation system of FIG. 1. If the ventilation path 8 cannot be formed into a straight cylinder in order to avoid a structural part of a building such as a brace, the ventilation path A midway portion of the road can be formed in a crank-shaped stepped portion 18 as shown in FIG. 6 (A) or a stepped portion 18 that inclines downward and inward as shown in FIG. 6 (B). However, even in this case, the pipe line portions on both sides of the stepped portion are provided so that the overlapping portion d exists when viewed from the inside and outside.

  7 and 8 show examples of layout changes of the outside air inlet 4 and the ventilation outlet 16 of the ventilation system. For convenience of explanation, configurations other than these two exits and the outer wall B of the building are omitted. The outer wall B of the building is drawn in a circle for simplicity, but is not limited to this.

FIG. 7 is an example in which the outside air inlet 4 and the ventilation outlet 16 are opened on the outer wall B which is the outer peripheral wall of the building. In this case, in order to effectively use natural wind power, the outside air inlet 4 and The ventilation outlet 16 is a positional relationship in which the deflection angle θ of the ventilation direction flowing out at a right angle to the ventilation outlet 16 is 90 ° or less with respect to the ventilation direction introduced at a right angle to the outside air inlet 4. To place. Here, the deflection angle θ is set to 90 ° or less so that when the external wind is received from the front of the outside air inlet 4, the airflow flowing out from the ventilation outlet 16 is not subjected to wind pressure that is disadvantageous for ventilation. It is to make it. Therefore, the ventilation outlet 16 may be located between a position P ₀ facing the outside air inlet 4 and a position P ₁ opening at right angles to the opening direction of the outside air inlet as shown in FIG.

FIG. 8 shows that the air-conditioned space A is formed between the outer outer wall portion B ₁ and the inner outer wall portion B ₂ of a building having an upward air-blowing space 70 in the center, and _{one of} these two wall portions has outside air. The inlet 4 is opened and the ventilation outlet 16 is opened on the other side. In this case, since the chimney effect of the atrium 70 is air in the conditioned space A flows out from the vent outlet 16, a vent air flow outlet, regardless circumference of the internal outer wall portion B ₂ and the outside air introduction port 4 Sufficient ventilation can be obtained regardless of the position in the direction.

  FIG. 9 is an embodiment of the illustrated example of FIG. In this embodiment, one side of the building is a core area D where stairs and toilet facilities are concentrated, and it is difficult to secure a flow path of air passing through the core area D. The outside air inlet 4, the ventilation path 8, and the ventilation inlet 10 are provided on the main wind direction side (or the opposite side of the main wind direction) of the outer wall of the space, and the ventilation outlet is provided on the side wall portion in the direction perpendicular to the main wind direction. 16 is an opening. Unlike the illustrated example, the ventilation outlet 16 is provided in the wall portion on the main wind direction side (or the opposite side to the main wind direction), and the outside air inlet 4, the ventilation path 8 and the passage are provided in the side wall portion orthogonal to the main wind direction. A wind inlet 10 or the like can also be provided.

  FIG. 10 shows an embodiment of the example shown in FIG. In this embodiment, as described above, a space (light garden) 70 from the first floor to the roof is provided in the central portion of the building, the outside air inlet 4 is provided on the outer wall side of the building, and the ventilation outlet is provided on the inner wall portion of the light garden side. 16 is opened respectively. An air conditioner 30 is installed below the outside air inlet 4.

  FIG.11 and FIG.12 has shown the air conditioner with a ventilation path of this invention.

  This air conditioner includes a box-shaped casing 50 that is wide and flat on the left and right along the outer wall B of the building, and the inside of the casing is partitioned into left and right halves by a partition plate 52. In the illustrated example, the upper half of one half (right half in the illustrated example) is penetrated by a ventilation path 8 penetrating in the front-rear direction, and the communication cylinder 53 is suspended by branching from the longitudinal middle part of the ventilation path. is doing. First and second flow path switching dampers 14 and 26 are formed in the ventilation path 8 and the communication cylinder 53, respectively. In addition, a communication port 56 with a filter 54 is provided below the partition plate 52. A cooling means 32 such as an air conditioning coil and a blower fan 34 are provided in the lower part of the other half part, and a blower port 62 is opened in the upper part of the front wall of the other half part to provide a second flow path switching damper. The air passage 22 is formed through the filter 54, the communication port 56, the cooling means 32, and the air blowing fan 34 to reach the air blowing port 62.

  In the illustrated example, the ventilation path 8 is constructed by inserting a passage forming chamber 64 between the opening openings 68 and 68 opened in the upper part of both front and rear walls of one half of the casing 50. The outer end portion of the passage forming chamber is preferably expanded as shown in the figure so as to be able to be joined to the external gallery 6 of the building. In the illustrated example, the rear half portion 64b of the ventilation path forming chamber including the expanded portion is provided detachably with respect to the front half section 64a of the ventilation path forming chamber. The front half 64a of the passage forming chamber is preferably formed in a straight cylinder shape.

  This air conditioner integrates the main part of the system shown in FIG. 2, and its operation is the same as that shown in FIG.

  FIGS. 13 and 14 show a modification of the air conditioner with the ventilation path according to FIGS. 11 and 12, and the air outlet 62 is replaced with the front wall of the other half of the casing 50, and the other half. In addition, the blower port is used as a connection port with the air-conditioning air supply duct 72. Since the other structure is the same as that of FIG. 12, description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  FIGS. 15 and 16 show a modification of the air conditioner with a ventilation path according to FIGS. 13 and 14. A ventilation path forming chamber 64 that opens in the front-rear direction is provided separately from the casing 50. A branch duct 66 that is formed upward and supports the ventilation path forming chamber 64 is erected from one half of the casing. The branch duct communicates with the longitudinal intermediate portion of the ventilation path 8 and one half of the casing, and the branch duct 66 and the ventilation path 8 are respectively connected to the second and first flow path switching dampers. 26 and 14 are installed. Since the other structure is the same as that of FIG. 13, the description thereof is omitted by attaching the same reference numerals.

  FIGS. 17 to 19 show the observation data of the wind speed that is the basis of the present invention. This observation data is published by the Tokyo Metropolitan Waterworks Bureau, and the observation point is the river mouth of Edogawa-ku, Tokyo. FIG. 17 shows the average wind volume by time, FIG. 18 shows the average wind speed by month, and FIG. 19 shows the appearance rate of each wind speed.

It is a top view of the air conditioning and ventilation system which concerns on this invention. It is principal part action explanatory drawing in the natural ventilation mode of the FIG. 1 system. It is principal part explanatory drawing in the general cooling mode of the FIG. 1 system. It is principal part explanatory drawing in the external air cooling mode of the FIG. 1 system. It is principal part explanatory drawing in the natural ventilation of the FIG. 1 system, and an external air cooling combined mode. 1 is a modification of the main part of the system. It is explanatory drawing which shows the modification of the layout of the external air inlet and ventilation outlet of the system of FIG. It is a conceptual diagram which shows the other modification of the layout with the external air introduction port and ventilation outlet of the FIG. 1 system. It is an Example of the modification of FIG. It is an Example of the modification of FIG. It is a front view of the air conditioner with a ventilation path which concerns on this invention. It is the longitudinal cross-sectional view seen in the IX-IX line direction of FIG. It is a front view of the modification of the air conditioner. It is the longitudinal cross-sectional view seen in the XIV-XIV line direction of FIG. It is a front view of the modification of the air conditioner. It is the longitudinal cross-sectional view seen in the XVI-XVI line direction of FIG. It is the distribution map of the average wind speed according to the time in a certain observation point which supported the present invention. It is a monthly average wind speed distribution map at the same observation point. It is a distribution map of the wind speed appearance rate at the same observation point. It is a block diagram of the conventional air conditioning system with a natural ventilation function.

Explanation of symbols

A ... Air-conditioned space B ... Building outer wall B ₁ ... Outer outer wall part B ₂ ... Inner outer wall part C ... Bulkhead D ... Core region 2 ... Natural ventilation part 4 ... Outside air inlet 6 ... External gallery 8 ... Ventilation path 10 ... Ventilation inlet
12 ... Inner louver 14 ... Flow path switching damper 16 ... Ventilation outlet 18 ... Step
20 ... Air conditioning unit 22 ... Blower passage 24 ... Connection duct 26 ... Second passage damper
28 ... Flow path adjusting valve 30 ... Air conditioner 31 ... Same inner surface 32 ... Cooling means 34 ... Blower fan
36 ... Control device 38 ... Blower duct 40 ... Blower outlet 42 ... Return air passage 44 ... Valve
46 ... Sensor part 50 ... Case 52 ... Partition plate 53 ... Communication tube 54 ... Filter
56 ... Communication port 60 ... Return air port 62 ... Blower port 64 ... Ventilation channel forming chamber
64a ... Same as the first half 64b ... Same as the second half 66 ... Branch duct
68 ... Opening opening 70 ... Light garden 72 ... Air conditioning air supply duct

Claims (11)

  An outside air introduction port 4 and a ventilation outlet 16 are provided at appropriate positions on the wall surface defining the air-conditioned space A, and a substantially horizontal cylindrical ventilation passage 8 is provided inwardly projecting from the outside air introduction port 4. It is branched 9 from a part, the air passage 22 having the air conditioner 30 in the middle is extended to the outlet 40 to the air-conditioned space, and the flow path switching dampers 14 and 26 are formed at the branch point 9 Characteristic air conditioning and ventilation system.   The air conditioning and ventilation system according to claim 1, wherein the air conditioner (30) is installed below the ventilation path (8).   The air conditioner 30 is installed along the building outer wall B that partitions the air conditioned space A, and the ventilation path 8 protrudes inward to the same extent as the distance from the outer wall B to the inner surface 31 of the air conditioner 30. In addition, at least a part of each opening surface of the ventilation inlet 10 formed on the inner end surface of the ventilation passage 8 and the outside air introduction port 4 is formed so as to overlap when viewed from the inside and outside directions. Or the air conditioning and ventilation system of Claim 2.   The air-conditioning / ventilating system according to claim 1, wherein louvers 6, 12 are installed at the outside air inlet 4 and the ventilation inlet 10. A natural ventilation mode in which the cool breeze taken from the outside through the ventilation path 8 passes through the air-conditioned space A and flows out to the outdoors;
Air in the air-conditioned space is air-conditioned through the return air passage 42, or a small amount of outside air that is hotter than the air temperature in the air-conditioned space is passed through the air passage between the outside air inlet 4 and the flow path switching damper 14, respectively. A normal cooling mode in which the air is sucked into the machine 30 and cooled, and the cooling air is blown out from the air outlet 40 to the air-conditioned space A side;
Outside air having a temperature lower than the air temperature in the air-conditioned space is sucked into the air conditioner 30 through the air passage between the outside air inlet 4 and the flow path switching damper 14, and the air-conditioned space is kept at the air temperature from the air outlet 40. The air conditioning and ventilation system according to any one of claims 1 to 4, wherein the operation state can be automatically switched between an outside air cooling mode that blows out to a side. In addition to the natural ventilation mode, normal cooling mode, and outside air cooling mode,
Cooling air taken from outside through the ventilation path 8 is sucked and cooled to the air conditioner 30 through the return air path 42 while passing through the air conditioning space A and flowing out to the outdoors. The air-conditioning / ventilating system according to claim 5, wherein a ventilation / cooling combined mode in which the cooling air is blown from the outlet 40 toward the air-conditioned space A can be selected, and the selection is automated by the control device 36.   The outside air inlet 4 and the ventilation outlet 16 are open to the outer peripheral wall B of the building, and are perpendicular to the ventilation outlet 16 with respect to the direction of ventilation introduced at a right angle to the outside air inlet 4. The air-conditioning / ventilating system according to any one of claims 1 to 6, wherein a deflection angle θ of the direction of the flowing out ventilation is 90 ° or less. The air-conditioned space A is formed between an outer outer wall portion B ₁ and an inner outer wall portion B ₂ of a building having an upward blow-off space 70 in the center, and an outside air inlet 4 is provided on one of these both wall portions. The air conditioning and ventilation system according to any one of claims 1 to 6, wherein a ventilation outlet 16 is opened on the other side.   A ventilation passage 8 penetrating in the front-rear direction is provided in the upper part of the casing 50, branching 9 from the middle portion in the front-rear direction of the ventilation passage, and opening the air passage 22 through the cooling means 32 and the blower fan 34 to the air outlet 62. In addition, an air conditioner with a ventilation path, characterized in that flow path switching dampers 14 and 26 are formed at the branch point 9 and a return air opening 60 opened at an appropriate position of the casing 50 is communicated with the blower fan 34. .   A casing 50, a ventilation path forming chamber 64 that opens in the front-rear direction above the casing, a branch duct 66 that communicates the longitudinal direction intermediate portion of the ventilation path and the casing 50 and supports the ventilation path forming chamber 64; The flow path switching dampers 26 and 14 are installed inside each of the branch duct and the ventilation path 8, and the cooling means 32 incorporated in the casing 50 from the flow path switching damper 26 on the branch duct side. An air conditioner with a ventilation path characterized in that the ventilation path 22 leading to the ventilation opening 62 through the ventilation fan 34 is opened, and the return air opening 60 opened at a proper position of the casing 50 is communicated with the ventilation fan 34. .   The air conditioner with a ventilation path according to claim 9 or 10, wherein the air blowing port (62) is a connection port (72) to an air conditioning air supply duct.

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