Air conditioning system installation method

Abstract

To provide a construction method of an air conditioning system and a design method of the air conditioning system in which a room for installing an air conditioner is not needed, the air conditioner, an exhaust port, an air supply port are easily arranged being separated from each other, and short circuit hardly occurs in a blowout airflow from the air conditioner.SOLUTION: In a construction method of an air conditioning system and a design method of the air conditioning system, in a building 1, a return section adjacent to a plurality of rooms is formed. In the rooms, intake parts 9a, 9b, 9c, 9d, 18a, 18b, 18c, 18d are provided for blowing out air delivered from blowers 40a, 40b, 40c, 40d, 41a, 41b, 41c, 41d. Between the rooms and the return section, an exhaust part 52 is provided for forming an exhaust airflow toward the return section from the rooms. In the return section, the plurality of blowers 40a, 40b, 40c, 40d, 41a, 41b, 41c, 41d and at least one air conditioner 30a are installed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to the construction of an air conditioning system that uses a single air conditioner and a blower to air-condition multiple rooms within a building. Method To relate to. [Background technology]

[0002] Conventionally, this type of air conditioning system is known to involve setting up an air conditioning room inside the building, adjusting the temperature of the air drawn into this room with an air conditioner, and then distributing it to multiple rooms with a fan (see, for example, Patent Document 1). The air conditioning system will be explained below with reference to Figure 8. As shown in Figure 8, an air conditioning unit room 101 is installed in the attic of the building. This air conditioning unit room 101 is divided into two rooms, a mixing unit 133 and a distribution room 200, by hanging a soffit 106 with an opening between it and the floor 116. One side wall 111 of the mixing section 133, which is one of the rooms in the air conditioning room 101, is provided with an attic air intake 400 and an outside air inlet 311 as external air intakes, and a louver 115 as a ventilation opening is provided on the floor surface 116. An air conditioner 102 is also installed on the side wall 111. The louver 115 is connected to the space inside the house in order to return the air that has been blown from the air conditioning room 101 into the house back to the air conditioning room 101. In the other room of the air conditioning room 101, the distributed room 200, a grid-like supply air fan mounting wall 144 is provided parallel to the hanging wall 106. A supply air fan 104 is mounted on the supply air fan mounting wall 144. On the side of the supply air fan mounting wall 144 opposite to the side with the hanging wall 106, that is, between the supply air fan mounting wall 144 and the wall surface 112b, there is a piping space 202 for supply air ducts (not shown) that are connected to the supply air fan 104 and distributed to each room in the room. Through holes (not shown) for the supply air ducts are formed in the wall surface 112b and floor surface 116 of the air conditioning room 101, equal to the number of rooms to be air-conditioned. The air supply fan 104 is driven by a DC motor, and air from the air conditioning room 101 is drawn in through the air intake 141, which is the fan intake of the air supply fan 104, and blown into multiple rooms of the house. Air circulates between the air conditioning room 101 and the rooms. When the air conditioner 102 is driven, air from the air conditioner flows out into the mixing unit 133. When the air supply fan 104 is driven, air from the attic flows out into the air conditioning room 101 through the attic air intake 400, and outside air flows out into the air conditioning room 101 through the outside air intake 311. In this way, multiple rooms in the house are air-conditioned using one air conditioner 102 and multiple air supply fans 104. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2012-57880 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] In such conventional air conditioning systems, it is necessary to set up an air conditioning room as a dedicated room for installing the air conditioner, or air conditioning unit. Furthermore, it is necessary to set up a mixing unit within the air conditioning room to mix the intake air (intake airflow) with the exhaust air (outtake airflow) from the air conditioner. In addition, (as described in paragraph 0046 of the prior art document) it is necessary to take measures to separate the air conditioner, exhaust vent, and intake vent as much as possible to prevent short-circuiting, a phenomenon in which air circulates in a narrow area due to the air conditioner, exhaust vent, and intake vent being too close together. Thus, the air conditioning room requires a certain volume, and construction is not easy.

[0005] This invention solves these conventional problems, eliminating the need for a separate room for installing the air conditioner, making it easy to position the air conditioner, exhaust vent, and intake vent separately, and preventing short-circuiting of the airflow from the air conditioner during installation. Method The purpose is to provide it. [Means for solving the problem]

[0006] To achieve the above objective, the construction method of the air conditioning system of the present invention involves forming return compartments adjacent to multiple rooms in a building, and providing an intake section in each room that blows out air supplied from a blower. Each Department In the house teeth , In the turning area opening An exhaust section is provided, and multiple blowers and at least one air conditioner are installed in the return section. This method allows multiple rooms to be air-conditioned using air conditioners installed in the return area, and also eliminates the need to provide a dedicated air conditioning room for the air conditioners. Another method involves using stairwells and corridors within the building as return zones. As a result, the return section has sufficient volume to accommodate the air conditioner, making it easier to arrange the air conditioner, exhaust vents, and intake vents separately within the return section, thus creating an air conditioning system. Another method involves positioning the intake port of the fan to avoid the direction of the airflow from the air conditioner. This results in an air conditioning system in which the airflow from the air conditioner is less likely to short-circuit. Another method involves installing a fan below the air outlet of the air conditioner and directing the airflow from the air conditioner to be approximately horizontal. This results in an air conditioning system in which the air blown out from the air conditioner is less likely to short-circuit. Another method involves providing at least one exhaust vent above the air conditioner. This results in an air conditioning system in which the airflow from the air conditioner is less likely to short-circuit. Another method involves making the total airflow from multiple fans greater than the airflow from the air conditioner. This eliminates the need for a dedicated air conditioning room and allows for an air conditioning system where the air conditioner, exhaust vents, and intake vents can be easily positioned separately in the return compartment. The present invention's design method for an air conditioning system includes, in order to achieve the above objective, an air conditioning capacity determination step in which the air conditioning capacity of the air conditioner is determined by calculating the air conditioning load for the building; an airflow rate determination step in which the amount of air to be supplied to each room is determined from the volume of each room; a total airflow rate calculation step in which the total airflow rates to each room determined in the airflow rate determination step are calculated to calculate the total airflow rate; and an air conditioning rate determination step in which the optimal air conditioning rate of the air conditioner is determined from the total airflow rate determined in the total airflow rate calculation step. Based on the airflow rates determined in the airflow rate determination step, a fan is selected to supply air to each room, and an air conditioner is selected that has the air conditioning capacity determined in the air conditioning capacity determination step and can set the airflow rate to be less than or equal to the optimal air conditioning rate determined in the air conditioning rate determination step. This method allows for the optimal selection of fans and air conditioners used in an air conditioning system where the building has multiple rooms and a return section, each room is equipped with an intake section that blows out air supplied by a fan, each room is equipped with an exhaust section that forms an exhaust airflow from the room toward the return section, and each return section is equipped with multiple fans and at least one air conditioner, thereby guiding air from the return section from the intake section to the rooms and air from the rooms toward the return section from the exhaust section. Another method involves selecting a fan such that, if an air conditioner with the air conditioning capacity determined in the air conditioning capacity determination step cannot set an air conditioning airflow rate below the optimal air conditioning airflow rate determined in the air conditioning airflow rate determination step, the minimum air conditioning airflow rate that can be set by the air conditioner is 70% or less of the total airflow rate. This method allows for the optimal design of the air conditioning volume and total air supply volume when selecting fans and air conditioners for an air conditioning system in which the total volume of the rooms is small, and the total volume of the fans required by the fans is small, particularly when the total volume of the rooms is small and therefore the total volume of the fans required by the fans is small. The system includes a building with multiple rooms and a return section, an intake section in each room that blows out air supplied by a fan, an exhaust section that forms an exhaust airflow from the room towards the return section, and multiple fans and at least one air conditioner installed in the return section. Another means is to select a blower equipped with an air volume adjusting means capable of adjusting the air volume. With this means, after the air conditioning system is constructed, the air volume can be increased or decreased using the air volume adjusting means to adjust the air conditioning capacity in response to fluctuations in the air conditioning load of each room. Effects of the Invention

[0007] According to the present invention, it is possible to provide an air conditioning system that eliminates the need to provide an air conditioner room, allows easy construction, facilitates the arrangement of air conditioners, exhaust ports, and intake ports, and has the effect of simplifying the related construction work. Furthermore, the blowout airflow from the air conditioner is less prone to short-circuiting, is diffused and mixed, can supply conditioned air with uniform temperature and humidity to a plurality of rooms, and can provide an air conditioning system having the effect of minimizing differences in temperature and humidity between individual rooms. Brief Description of the Drawings

[0008] [Figure 1] First-floor plan view of a building showing the configuration of the air conditioning system according to Embodiment 1 of the present invention [Figure 2] Second-floor plan view of the same building [Figure 3] Enlarged plan view of the second-floor staircase section of the same building [Figure 4] A-A cross-sectional view of the second-floor staircase section of the same building [Figure 5] B-B cross-sectional view of the second-floor staircase section of the same building [Figure 6] Plan view of a building showing the configuration of the air conditioning system according to Embodiment 2 of the present invention [Figure 7] C-C cross-sectional view of the corridor section of the same building [Figure 8] Perspective view showing an air conditioning room of a conventional air conditioning system Modes for Carrying Out the Invention

[0009] The method for constructing an air conditioning system according to the first embodiment of the present invention involves forming return compartments adjacent to multiple rooms in a building, and providing an intake section in each room that blows out air supplied from a blower. Each Department In the house teeth , In the turning area opening The system includes an exhaust section, and in the return section, multiple fans and at least one air conditioner are installed. The air conditioner operating in the return section expels air from multiple rooms in the building, adjusts the temperature and humidity within the return section, and then blows it back into the multiple rooms in the building using the fans, thereby providing air conditioning for the building.

[0010] The installation method for the air conditioning system according to the second and third embodiments of the present invention uses stairwells and corridors within a building as return compartments. Since air conditioning can be performed within these return compartments, it is not necessary to provide a dedicated air conditioning room, and a certain volume can be secured for installing air conditioners.

[0011] The installation method for the air conditioning system according to the fourth embodiment of the present invention involves providing the intake port of the blower in a direction that avoids the direction of airflow discharged from the air conditioner. This prevents the airflow discharged from the air conditioner from being directly drawn into the blower, making short-circuiting less likely and allowing for diffusion and mixing within the return section.

[0012] The installation method for the air conditioning system according to the fifth embodiment of the present invention involves installing a blower below the outlet of the airflow discharged from the air conditioner, and setting the direction of the airflow discharged from the air conditioner to be approximately horizontal. This prevents the air discharged from the air conditioner from being directly drawn into the blower, making short-circuiting less likely and allowing it to be diffused and mixed within the return section.

[0013] The sixth embodiment of the present invention provides an air conditioning system installation method in which at least one exhaust port is provided above the air conditioner, and since the air exhausted from inside the building is drawn into the air conditioner, the operation control of the air conditioner can be performed by detecting a temperature close to the room temperature.

[0014] The seventh embodiment of the present invention provides an air conditioning system installation method in which the total airflow from multiple blowers is greater than the conditioned airflow from the air conditioner. As a result, an airflow greater than or equal to the conditioned airflow from the air conditioner is discharged from and into the return section from the rooms within the building. This makes short-circuiting less likely and allows the air blown out from the air conditioner and the air flowing in from the rooms to be mixed within the return section.

[0015] The air conditioning system design method according to the eighth embodiment of the present invention includes an air conditioning capacity determination step in which the air conditioning capacity of the air conditioner is determined by calculating the air conditioning load for the building; an airflow rate determination step in which the amount of air to be supplied to each room is determined from the volume of each room; a total airflow rate calculation step in which the total airflow rates to each room determined in the airflow rate determination step are calculated to calculate the total airflow rate; and an air conditioning rate determination step in which the optimal air conditioning rate of the air conditioner is determined from the total airflow rate determined in the total airflow rate calculation step. Based on the airflow rates determined in the airflow rate determination step, a fan is selected to supply air to each room, and an air conditioner is selected that has the air conditioning capacity determined in the air conditioning capacity determination step and can set the airflow rate to an airflow rate less than or equal to the optimal air conditioning rate determined in the air conditioning rate determination step. This allows for the optimal selection of fans and air conditioners.

[0016] The air conditioning system design method according to the ninth embodiment of the present invention involves selecting a fan such that, if an air conditioner equipped with the air conditioning capacity determined in the air conditioning capacity determination step cannot set an air conditioning airflow rate below the optimal air conditioning airflow rate determined in the air conditioning airflow rate determination step, the minimum air conditioning airflow rate that can be set by the air conditioner is 70% or less of the total airflow rate. This method allows for the optimal design of the air conditioning airflow rate and the total airflow rate, especially when the total volume of the room is small and the total airflow rate required by the fan is small.

[0017] The design method for an air conditioning system according to the tenth embodiment of the present invention involves selecting a blower equipped with an airflow adjustment means that can adjust the airflow rate. After the air conditioning system is installed, the airflow adjustment means can be used to increase or decrease the airflow rate to adjust the air conditioning capacity in response to fluctuations in the air conditioning load for each room.

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) Figure 1 is a first-floor plan of a building showing the configuration of an air conditioning system according to one embodiment of the present invention, and Figure 2 is a second-floor plan of the same building. As shown in Figure 1, the first floor of building 1 contains an entrance hall 2, a living room 3, a kitchen 4, a toilet 5, a bathroom 6, a washroom / dressing room 7, etc. A staircase 8 leading to the second floor is located in living room 3. Air outlet grilles (intake sections) 9a, 9b, 9c, and 9d are installed on the ceiling of the first floor of building 1 to supply air to the rooms on the first floor. One end of the first-floor air supply ducts 10a, 10b, 10c, and 10d are connected to the air outlet grilles 9a, 9b, 9c, and 9d, respectively. The other ends of the first-floor air supply ducts 10a, 10b, 10c, and 10d are located on the second floor. Note that the air outlet grilles 9a, 9b, 9c, and 9d may be installed on the floor instead of the ceiling. If the outlet grilles 9a, 9b, 9c, and 9d are installed on the floor, the first-floor ventilation ducts 10a, 10b, 10c, and 10d are installed under the floor.

[0019] As shown in Figure 2, the second floor of building 1 has a stairwell 12 consisting of a staircase 8 from the first floor and a corridor 11. Rooms A13, B14, and C15 on the second floor of building 1 are located adjacent to the stairwell 12. Room A13 has a storage room A16. Room B14 has a storage room B17. The ceiling 62 on the second floor of building 1 is equipped with air outlet grilles (intake sections) 18a, 18b, 18c, and 18d for supplying air to the rooms on the second floor. Air outlet grilles (intake sections) 18a and 18b are located on the ceiling 62 of room A13 on the second floor. Air outlet grille (intake section) 18c is located on the ceiling 62 of room B14 on the second floor. Air outlet grille (intake section) 18d is located on the ceiling 62 of room C15 on the second floor. One end of the second-floor ventilation ducts 19a, 19b, 19c, and 19d are connected to the outlet grilles (intake sections) 18a, 18b, 18c, and 18d, respectively. Note that the outlet grilles 18a, 18b, 18c, and 18d may be installed on the floor instead of the ceiling 62. If the outlet grilles 18a, 18b, 18c, and 18d are installed on the floor, the second-floor ventilation ducts 19a, 19b, 19c, and 19d are installed under the floor of the second floor.

[0020] Figure 3 is an enlarged plan view of the stairwell on the second floor of the building where the air conditioning system in this embodiment is located, Figure 4 is a view taken along arrow AA in Figure 3, and Figure 5 is a view taken along arrow BB in Figure 3. As shown in Figures 3 to 5, the stairwell 12 is enclosed by the side wall 20 of the staircase 8, wall A21 at the top of the staircase 8 from the first floor, partition walls 22 between the staircase 8 and the rooms A13, B14, and C15 on the second floor, and wall B23 opposite wall A21. The distance between wall A21 and wall B23 is approximately 3.8m, and the width of the staircase 8 and corridor 11 is approximately 0.9m. Note that the dimensions are given using the center dimensions of the columns in the architectural design drawings and do not take into account the thickness of the walls, hence the addition of "approximately". The same applies to the following dimension notations. A handrail 24 is installed on the side of the corridor 11 that faces the staircase 8. The handrail 24 consists of horizontal bars 25 and vertical bars 26. There are slits 27 between the vertical bars 26. A similar handrail 28 is installed on the first-floor side of the staircase 8.

[0021] An air conditioner 30a is installed above wall B23 of the stairwell 12, close to the side wall 20. This air conditioner 30a is a wall-mounted indoor unit of a split-type air conditioner connected to an outdoor unit (not shown). This air conditioner 30a has a function to set the airflow of the indoor unit as air conditioning volume, such as strong wind, medium wind, and weak wind. An intake port is provided on the top surface 31 of the air conditioner 30a for drawing in intake airflow 32a. An outlet is provided on the lower front of the air conditioner 30a for blowing out discharge airflow 33a. A vertical airflow direction control plate 34 is provided on the outlet. The vertical airflow direction control plate 34 is set to blow out the discharge airflow 33a in a nearly horizontal direction. Here, nearly horizontal direction includes a downward direction within 15 degrees from the horizontal direction. A horizontal airflow direction control plate (not shown) is also provided on the outlet. The horizontal airflow control panel is set to blow the discharged airflow 33a toward wall A21, approximately parallel to the side wall 20.

[0022] Wall B23 is equipped with first-floor fans 40a, 40b, 40c, and 40d, and second-floor fans 41a, 41b, 41c, and 41d. The first-floor fans 40a, 40b, 40c, and 40d, and the second-floor fans 41a, 41b, 41c, and 41d are positioned below the air conditioner 30a. There are four first-floor fans 40 and four second-floor fans 41. One first-floor fan 40 is connected to one first-floor ventilation duct 10, and one second-floor fan 41 is connected to one second-floor ventilation duct 19. Inside the first-floor fan 40 and the second-floor fan 41, there are sirocco fans 42 that draw in air from the stairwell 12. The drawn-in air flows through the first-floor ventilation duct 10 and the second-floor ventilation duct 19 and is blown out into each room in the building 1. Drawing in air from the stairwell 12 generates an intake airflow 43. The drawn-in air flows as an exhaust airflow 44 through the first-floor ventilation duct 10 and the second-floor ventilation duct 19. The first-floor fans 40a, 40b, 40c, and 40d, and the second-floor fans 41a, 41b, 41c, and 41d are equipped with airflow adjustment means. The airflow adjustment means include, for example, a notch switch to change the fan speed and shutters (not shown) to adjust the opening area of ​​the outlets of the discharge grilles 9a to 9d.

[0023] In each of the rooms A13, B14, and C15 on the second floor, an exhaust section 52 is provided near the ceiling 62, which is higher than the air conditioner 30a in the partition wall 22, along with a gap 51 at the bottom of the door 50 that serves as the entrance from the stairwell 12. The exhaust airflow 53 from the second floor is formed in the gap 51 and the exhaust section 52. Each room on the first floor has an opening that communicates with the stairwell 12. This opening corresponds to an exhaust section 55 to the stairwell 12, and the exhaust airflow 56 from the first floor is formed in this opening. Therefore, the stairwell 12 becomes a return area where air discharged from multiple rooms within Building 1, which consists of Living Room 3, Kitchen 4, Room A13, Room B14, and Room C15, converges. In other words, the stairwell 12, which is a return area, is adjacent to Living Room 3, Kitchen 4, Room A13, Room B14, and Room C15.

[0024] The amount of air supplied to each of the following rooms—Living Room 3, Kitchen 4, Room A13, Room B14, and Room C15—is determined by the respective volumes of each room (Air Supply Determination Step). Then, the total air supply (hereinafter referred to as the total air supply: Vh) is calculated by adding up the individual air supply amounts to Living Room 3, Kitchen 4, Room A13, Room B14, and Room C15 determined in the Air Supply Determination Step (Total Air Supply Calculation Step). From the air supply amounts determined in the Air Supply Determination Step, the air supply capacity and number of fans to supply air to each of the following rooms—Living Room 3, Kitchen 4, Room A13, Room B14, and Room C15—are selected. In this embodiment, the air supply duct constitutes part of the fan. That is, the air supply amount used for selecting the fan is the amount of air blown out from the outlet grille (intake section) via the air supply duct. The amount of airflow required for air conditioning is 2.5 m³ per room. 3 At least 13m per area 3 / h or more, ideally 20m 3A rate of approximately 1 / h is desirable, and the airflow rate should be adjusted according to the size of the room and the load. In this embodiment, since room A13 is larger than room B14, two outlet grilles 18a and 18b are provided, and air is supplied by blowers 41a and 41b. Note that since the blowers are equipped with airflow adjustment means, it is more convenient to have one or more blowers per room.

[0025] The air conditioning capacity of air conditioner 30a is determined by calculating the air conditioning load for building 1 (air conditioning capacity determination step). In other words, the air conditioning load calculation includes heat transfer entering through walls, windows, ceilings, etc., radiant heat from sunlight passing through windowpanes, heat and moisture generated by occupants, heat generated from lighting and machinery, and heat and moisture from incoming outside air and drafts, all calculated as the air conditioning load (Haruo Yamada, "Refrigeration and Air Conditioning," Japan, Yokendo Co., Ltd., March 20, 1975, pp. 240-247). Then, with a margin built into this load calculation result, an air conditioner 30a is selected from the air conditioners available in the lineup based on capacity, and the entire building 1 is air-conditioned. The optimal air conditioning airflow rate for air conditioner 30a (hereinafter referred to as the optimal air conditioning airflow rate: Vq) is determined from the total airflow rate: Vh calculated in the total airflow rate calculation step (air conditioning airflow rate determination step). The optimal air conditioning airflow rate, Vq, is 50% or less of the total airflow rate, Vh, and at most 70% or less, which is the airflow rate at which the air conditioner 30a can perform effectively in response to the air conditioning load. The air conditioner 30a is selected to have the air conditioning capacity determined in the air conditioning capacity determination step and to be a model that can set the air conditioning volume to an air conditioning volume less than or equal to the optimal air conditioning volume: Vq determined in the air conditioning volume determination step. If the total volume of the rooms to be air-conditioned is small, the minimum air conditioning airflow that can be set on the air conditioner 30a may be greater than the optimal air conditioning airflow: Vq determined in the air conditioning airflow determination step. In this case, the total airflow of the blower: Vh is increased so that the air conditioner 30a can be set to an airflow of 70% or less of the total airflow: Vh. That is, in order to maintain the air conditioning capacity of the air conditioner 30a, instead of reducing the air conditioning air volume of the air conditioner 30a more than necessary, the air supply volume into the building 1 is adjusted such that the total air supply volume Vh is 50% or less of the minimum air conditioning air volume that can be set by the air conditioner 30a, with 2.5 m per room 3 per room 20 m 3 / h or more to cope with this. As a method for increasing the air supply volume into the building, it is effective not only to increase the air supply volume to each room, but also to supply air to the underfloor space or the attic space where airtightness and heat insulation from the outdoors are ensured, and to provide an opening between the underfloor space or the attic space and the return section to circulate the conditioned air. Even if the ventilation locations in the building or the air supply volume of the blower is too large, the air conditioning load of the building itself does not fluctuate, so there is almost no impact on the air conditioning capacity.

[0026] In the present embodiment, the floor area of the building 1 is about 97.7 m 2 , the ceiling height is 2.5 m, and the air conditioner 30a having a cooling capacity equivalent to 4 kW is installed. In the low wind mode, 700 m during cooling operation 3 / h is supplied by the cross-flow fan. Each of the first-floor blower 40 and the second-floor blower 41 that supply air to each room has an air supply volume of 150 m at the middle notch per unit 3 / h or so is set. The total air supply volume Vh supplied into the building 1 in the present embodiment is 1200 m 3 / h or so, which is larger than the air conditioning air volume of the air conditioner 30a. That is, in the present embodiment, the air volume of 58% of the total air supply volume Vh is designed as the air conditioning air volume (low wind mode) that can be set by the air conditioner 30a. Although not described in the present embodiment, for example, if an air supply of about 300 m to the underfloor 3 / h is added, the total air supply volume Vh becomes 1500 m 3 / h or so, so the air conditioning air volume 700 m of the air conditioner 30a 3 / h drops to 46% of the total air supply volume Vh.

[0027] In the above configuration, when the air conditioner 30a is operated with the internal temperature of building 1 set, the temperature of the intake airflow 32a is detected and cooling or heating air conditioning is performed. The conditioned air becomes the discharge airflow 33a of the air conditioner 30a and is blown out towards wall A21 in a nearly horizontal direction and nearly parallel to the side wall 20. In addition, when the first-floor blower 40 and the second-floor blower 41 are operated, the intake airflow 43 and discharge airflow 44 of the blowers are generated.

[0028] The wind speed of the airflow 33a discharged from the air conditioner 30a is 3-5 m / s, while the wind speed of the air intake 43 from the blower (ventilation fan) is about 0.4 m / s. Thus, the air intake 43 from the blower (ventilation fan) is slower than the wind speed of the airflow 33a discharged from the air conditioner 30a. Furthermore, because the airflow 33a discharged from the air conditioner 30a is blown by a through-flow fan, the airflow can easily reach far distances and is not easily drawn into the air intake 43 of the blower, which is generated by the operation of the sirocco fan 42 drawing in ambient air. Consequently, most of the airflow 33a discharged from the air conditioner 30a diffuses and reaches the vicinity of wall A21, then reverses direction and returns along the stairs 8 towards wall B23, where it merges with and mixes with the air intake 43 of the blower, which has a larger airflow volume. Therefore, by positioning the intake ports for the first-floor fan 40 and the second-floor fan 41 so as to avoid the direction of the airflow 33a from the air conditioner 30a, an air conditioning circulating airflow 45 is formed that circulates and diffuses almost entirely within the stairwell 12, making short circuits less likely to occur. Furthermore, since the specific gravity of the discharged airflow 33a is lighter and more likely to rise during heating than during cooling, it is desirable to direct the direction of the discharged airflow 33a during heating downwards compared to the direction of the discharged airflow 33a during cooling, so that the discharged airflow 33a is blown in a nearly horizontal direction.

[0029] When air is supplied to multiple rooms in building 1, some of the air from rooms A13, B14, and C15 on the second floor returns to the stairwell 12 as the exhaust airflow 53 on the second floor, and some of the air from each room on the first floor returns to the stairwell 12 as the exhaust airflow 56 on the first floor. At this time, since the exhaust section 52 opens near the ceiling 62, most of the exhaust airflow 53 on the second floor forms an air conditioning return airflow 57 that flows along the ceiling 62 towards the air conditioner 30a and merges with the intake airflow 32a of the air conditioner 30a. Therefore, the air conditioner 30a is operated and controlled by detecting an air temperature close to the temperature of each room. The exhaust section 52 can be installed anywhere as long as it is connected to the stairwell 12, but installing it closer to the ceiling 62 of the stairwell 12 and closer to the air conditioner 30a allows more of the exhaust airflow 53 to be drawn into the air conditioner 30a, bringing the temperature of the intake airflow 32a closer to the room temperature, thus reducing the difference between the set temperature when operating the air conditioner 30a and the actual temperature inside building 1, allowing for controlled operation.

[0030] Until it reverses direction, the circulating airflow 45 flows opposite to the exhaust airflow 53 and intake airflow 43, drawing in and diffusing the surrounding air. Consequently, as the circulating airflow 45 flows, its temperature rises above the temperature of the air conditioner's outlet airflow 33a during cooling, and falls below the temperature of the outlet airflow 33a during heating. The circulating airflow 45 is mainly formed on the staircase 8 side of the stairwell 12, and the return airflow 57 is mainly formed on the corridor 11 side of the stairwell 12. Furthermore, since the amount of air supplied to the rooms in building 1 is greater than the amount of conditioned airflow, the discharge airflow 33a from the air conditioner 30a mixes with the exhaust airflow 56 from the first floor and the exhaust airflow 53 from the second floor within the stairwell 12. This mixing further reduces the temperature difference between the circulating airflow 45 and each room. Air flows through the slits 27 in the handrails 24 and 28, aiding in this mixing. A portion of the exhaust airflow 56 from the first floor also joins the return airflow 57 from the boundary between the stairs 8 and the corridor 11. In addition, ventilation slits connecting the first and second floors of building 1 may be provided to facilitate the joining of airflow from the first floor into the corridor 11 (not shown).

[0031] In the air conditioning system of this embodiment, the temperature difference between the temperature of the airflow 44 blown into each room and the room temperature of each room is smaller than the temperature difference between the temperature of the airflow 33a blown into the room by the air conditioner 30a. Therefore, people in the room feel less stress due to the temperature difference between the airflow 44 and the room temperature, thus increasing comfort. Furthermore, air conditioners that control the compressor speed with an inverter operate in such a way that the difference between the discharge temperature and the room temperature is small when the air conditioning load is low and the amount of air supplied to the room is constant. Therefore, if the compressor of air conditioner 30a is inverter type, comfort will not be compromised even if the amount of air supplied to the room is reduced during transitional seasons other than summer and winter when the air conditioning load is low, so it is acceptable to reduce the total air supply volume: Vh and have the conditioned air supply volume be 70% or more of the total air supply volume: Vh.

[0032] The air conditioner 30a, the first-floor fan 40, and the second-floor fan 41 do not all need to be installed on wall B23. Some of the fans can be installed on the first floor of the stairwell 12, or they can be installed on the partition wall 22. The direction of the discharged airflow 33a can be adjusted by the horizontal airflow direction control plate of the air conditioner 30a to form an air-conditioned circulating airflow 45 that merges with the intake airflow 43 of the blower. An air passage for the air-conditioned return airflow 57 can be formed in the space other than the space in which the air-conditioned circulating airflow 45 is formed, and the air conditioner 30a may be installed in the partition wall 22. In plan view, the air-conditioned circulating airflow 45 should be formed in the direction of the longer side of the rectangular return section. Furthermore, the air conditioners 30a may be installed in both wall B23 and partition wall 22, and other heat sources for heating, such as hot water radiators, may also be provided in addition to the air conditioners 30a. The airflow from the two devices will merge and circulate within the stairwell 12, and will be drawn into the first-floor fan 40 and the second-floor fan 41. Therefore, this design and construction method can also be applied to advanced air conditioning systems, such as those that use solar energy to produce hot water as a heat source. In the air conditioning system of this embodiment, the total airflow volume Vh to each room is greater than the air conditioning airflow volume. Therefore, a portion of the air returning from each room to the return area is drawn into the air conditioner 30a, and the remaining air is thoroughly mixed with the air blown out by the air conditioner 30a in the return area, conditioned, and then returned to each room. By adjusting the airflow rate using the fan's airflow adjustment mechanism, each fan can respond to fluctuations in the room's air conditioning load.

[0033] The volume of stairwell 12 is approximately 16.2 m³. 3 Therefore, since the air conditioner 30a forms an air conditioning circulating airflow 45 to provide air conditioning, it becomes unnecessary to provide a dedicated air conditioner room. If the air conditioning circulating airflow 45 is formed, the volume of the return compartment may be less than this, but the volume of a normal stairwell is sufficient as the volume of the return compartment, and it is easy to configure the air conditioner 30a, the first-floor blower 40, the second-floor blower 41, and the exhaust section 52 and discharge section 55. (Embodiment 2)

[0034] Figure 6 is a floor plan of a building showing the configuration of the air conditioning system in Embodiment 2 of the present invention, and Figure 7 is a cross-sectional view of the corridor area of ​​the same building. As shown in Figures 6 and 7, building 61 is a single-story building with an entrance 2, and contains a living room 3, a kitchen 4, a toilet 5, a bathroom 6, and a washroom / dressing room 7. Building 61 also contains rooms A63 and B64. Room A63 contains a storage room A65. Rooms A63, B64, and living room 3 of building 61 are connected by a corridor 66. Each of the rooms A63 and B64 is provided with air outlet grilles (intake sections) 68a, 68b, 68c, 68d, 68e, and 68f on the ceiling 62 or floor 63 to supply air into the room. One end of each of the air outlet grilles 68a, 68b, 68c, 68d, 68e, and 68f is connected to an air duct 63a, 63b, 64c, 64d, 64e, and 63f, respectively. Air ducts 63a, 63b, and 63f are installed in the ceiling 62 as ceiling air ducts 82, and air ducts 64c, 64d, and 64e are installed under the floor as underfloor air ducts 83. Corridor 66 is a space enclosed by the ceiling 62, floor 63, entrance wall 71 where the entrance door 70 is installed, partition wall A72 with living room 3, partition wall B73 with kitchen 4, partition wall C74 with toilet 5, wall D75 where the air conditioner 30b is installed, partition wall E76 with room A63, and partition wall F77 with room B64.

[0035] An air conditioner 30b is installed above wall D75 of corridor 66, close to partition wall E76. This air conditioner 30b is a wall-mounted indoor unit of a split-type air conditioner connected to an outdoor unit (not shown). An intake port for the intake airflow 32a is provided on the top surface of the air conditioner 30b. An outlet for the discharge airflow 33b is provided on the lower front of the air conditioner 30b. A vertical airflow control plate 34 is provided at the outlet. The vertical airflow control plate 34 is set to blow the discharge airflow 33b in a nearly horizontal direction. A horizontal airflow control plate (not shown) is also provided at the outlet. The horizontal airflow control plate is set to blow the discharge airflow 33b toward the entrance wall 71, nearly parallel to partition wall E76.

[0036] The ceiling fans 80 and underfloor fans 81 are positioned below the air conditioner 30b. Three ceiling fans 80 and three underfloor fans 81 are installed. One ceiling fan 80 is connected to one ceiling ventilation duct 82, and one underfloor fan 81 is connected to one underfloor ventilation duct 83. Inside the ceiling fans 80 and underfloor fans 81 are sirocco fans (not shown), which draw in air from the corridor 66. The drawn-in air flows through the ceiling duct 82 and underfloor duct 83 and is blown out into rooms A63, B64, living room 3, and kitchen 4 in the building 61. Drawing in air from the corridor 66 generates an intake airflow 43. The inhaled air flows as an outflow airflow 44 through the ceiling ventilation duct 82 and the underfloor ventilation duct 83. The ceiling-mounted fan 80 and the underfloor fan 81 are equipped with airflow adjustment means. The airflow adjustment means include, for example, a notch switch for changing the fan speed and shutters (not shown) for adjusting the opening area of ​​the outlets of the outlet grilles 68a to 68f.

[0037] The ceiling fan 80 and the underfloor fan 81 are installed in a partition wall G84 parallel to wall D75. In other words, the space between wall D75 and partition wall G84 is a ventilation compartment 85, and a ventilation opening 86 is formed below wall D75 that communicates with the ventilation compartment 85 from the corridor 66. Since this ventilation opening 86 essentially corresponds to the air intake section from the corridor 66 for the ceiling fan 80 and the underfloor fan 81, with this configuration, it is not necessary to install the ceiling fan 80 and the underfloor fan 81 below the air conditioner 30b. In addition, sound-absorbing material is provided on the inner wall of the ventilation compartment 85.

[0038] An exhaust section 52 is provided near the ceiling 62, which is higher than the air conditioners 30b in partition walls E76 and F77, along with the lower gap 88 of the door 87 that serves as the entrance from corridor 66 to rooms A63 and B64. An exhaust airflow 89 is formed in the lower gap 88 and the exhaust section 52. An opening that communicates with living room 3 corresponds to an exhaust section 90 to corridor 66, and an exhaust airflow 91 from living room 3 is formed in this opening. Therefore, corridor 66 becomes a return area where air exhausted from multiple rooms, namely living room 3, kitchen 4, room A63, and room B64, converges. Furthermore, corridor 66, which serves as a return area, is adjacent to living room 3, kitchen 4, room A63, and room B64.

[0039] The amount of air supplied to each of the following rooms—Living Room 3, Kitchen 4, Room A63, and Room B64—is determined by the respective volumes of each room (Air Supply Determination Step). Then, the total air supply amount: Vh is calculated by adding up the air supply amounts determined in the Air Supply Determination Step for each of the following rooms (Total Air Supply Calculation Step). From the air supply amounts determined in the Air Supply Determination Step, the air supply capacity and number of fans to be supplied to each of the following rooms are selected. In this embodiment, the air supply duct constitutes part of the fan. That is, the air supply amount used for selecting the fan is the amount of air blown out from the outlet grille (intake section) via the duct. The air supply amount required for air conditioning is for a room of 2.5 m². 3At least 13m per area 3 / h or more, ideally 20m 3 A rate of approximately / h is desirable, and the airflow rate should be adjusted according to the size of the room and the load. In the case of a large room, two or more fans may be installed, meaning that two or more outlet grilles may be provided.

[0040] The air conditioning capacity of the air conditioner 30b is determined by calculating the air conditioning load for the building 61 (air conditioning capacity determination step). The optimal air conditioning airflow rate Vq for air conditioner 30b is determined from the total airflow rate Vh calculated in the total airflow rate calculation step (air conditioning airflow rate determination step). The air conditioner 30b is selected to have the air conditioning capacity determined in the air conditioning capacity determination step and to be a model that can set the air conditioning volume to an air conditioning volume less than or equal to the optimal air conditioning volume: Vq determined in the air conditioning volume determination step. If the total volume of the rooms to be air-conditioned is small, the minimum air conditioning airflow that can be set on the air conditioner 30b may be greater than the optimal air conditioning airflow: Vq determined in the air conditioning airflow determination step. In this case, the total airflow of the blower: Vh is increased so that the air conditioner 30b can be set to an airflow of 70% or less of the total airflow: Vh. In other words, in order to maintain the air conditioning capacity of the air conditioner 30b, rather than lowering the air conditioning volume of the air conditioner 30b more than necessary, the amount of air supplied into the building 61 should be set so that the minimum air conditioning volume that can be set by the air conditioner 30b is 50% or less of the total supply volume: Vh, so that the amount of air supplied into the building 61 should be 2.5 3 20m per area 3 This can be addressed by increasing the airflow to more than / h. Excessive airflow from the fan will not affect the air conditioning capacity.

[0041] In the highly airtight and highly insulated house of this embodiment, the floor area of ​​the building 61 is approximately 79.3 m². 2 The ceiling height is 2.5m, and an air conditioner 30b with a cooling capacity equivalent to 3.6kW is installed. In low-wind mode, the cooling capacity is 510m 3 The airflow is supplied by a through-flow fan. Both the ceiling-mounted fans 80 and the underfloor fans 81 that supply air to each room have an airflow capacity of 150 m³ per unit at the medium setting. 3 Set a value of approximately / h. In this embodiment, the total airflow volume Vh supplied into the building 61 is 900m3 This amounts to approximately [number] hours, which is more than the airflow rate of the 30b air conditioner. In other words, in this embodiment, the airflow rate that can be set in the air conditioner 30b is designed to be 57% of the total airflow rate Vh (low airflow mode).

[0042] In the above configuration, when the air conditioner 30b is set to a controlled temperature and operated, the temperature of the intake airflow 32a is detected and cooling or heating is performed. The conditioned air becomes the discharge airflow 33b of the air conditioner 30b and is blown out towards the entrance wall 71 in a nearly horizontal direction and nearly parallel to the partition wall E76. In addition, the ceiling fan 80 and the underfloor fan 81 are operated, generating the intake airflow 43 and discharge airflow 44 of the fans. In this embodiment, the ceiling fan 80 and the underfloor fan 81 are installed at the back of the ventilation compartment 85, and sound-absorbing material is provided in the ventilation compartment 85, so that the operating noise of the ceiling fan 80 and the underfloor fan 81 does not easily leak into the corridor 66. In addition, sound-absorbing ducts are used for the ventilation ducts 63a, 63b, 63f, 64c, 64d, and 64e.

[0043] The wind speed of the airflow 33b discharged from the air conditioner 30b is 3-5 m / s, while the wind speed of the intake airflow 43 of the blower (ventilation fan) is about 0.4 m / s. Therefore, the intake airflow 43 of the blower (ventilation fan) is slower than the wind speed of the airflow 33b discharged from the air conditioner 30b. Therefore, most of the airflow 33b from the air conditioner 30b reaches the vicinity of the entrance wall 71, reverses direction, returns along the floor 63 towards the wall D75, and merges with the intake airflow 43 of the blower. Thus, if the ventilation opening 86 is provided to avoid the direction of the airflow 33b from the air conditioner 30b, an air conditioning circulating airflow 92 is formed in the corridor 66, making short circuits less likely. Furthermore, depending on the distance between the air conditioner 30b and the entrance wall 71 and the setting of the air conditioning volume of the air conditioner 30b, it is possible that most of the discharged airflow 33b will diffuse without reaching the entrance wall 71 and merge with the intake airflow 43 of the blower to form the circulating airflow 92.

[0044] When the air is blown into rooms A63, B64, living room 3, and kitchen 4 of building 61, it returns to the corridor 66 as exhaust airflow 89 and exhaust airflow 91. At this time, since the exhaust section 52 opens near the ceiling 62, most of the exhaust airflow 89 forms an air conditioning return airflow 93 that flows along the ceiling 62 towards the air conditioner 30b and merges with the intake airflow 32a of the air conditioner 30b. A portion of the air conditioning return airflow 93 is also formed by the exhaust airflow 91 that flows from living room 3 near the ceiling 62. The air conditioner 30b then detects an air temperature close to the temperature of rooms A63, B64, and living room 3 and operates under control.

[0045] Until it reverses direction, the circulating airflow 92 flows opposite to the exhaust airflow 89 and the return airflow 93, drawing in and diffusing the surrounding air. Consequently, the temperature of the circulating airflow 92 rises above the temperature of the air conditioner's outlet airflow 33b during cooling and falls below the temperature of the outlet airflow 33b during heating as the distance it travels increases. Due to the mixing of the airflow 33b from the air conditioner 30b with the surrounding air, the temperature difference between the airflow 44 blown into rooms A63, B64, and living room 3 and the room temperature in those rooms becomes smaller than the temperature difference between the airflow 33b from the air conditioner 30b and the room temperature in those rooms. As a result, people in the rooms feel less stressed by the temperature difference of the airflow 44, thus increasing comfort.

[0046] Furthermore, when entering the building 61 from outside through the front door 70, one is exposed to the circulating airflow 92, which is at a lower temperature than the temperatures of rooms A63, B64, and living room 3 during cooling, and at a higher temperature than the temperatures of rooms A63, B64, and living room 3 during heating. This allows the heat or cold felt outdoors to be mitigated at the entrance 2, and also prevents outside air entering through the front door 70 from directly entering rooms A63, B64, and living room 3.

[0047] Furthermore, in highly airtight and well-insulated homes, a heat exchange ventilation system is installed for constant ventilation. If the outdoor air outlet of this ventilation system is also installed in the ceiling 62 of the entrance 2, it will be mixed with the circulating airflow 92 of the air conditioning system and sent to rooms A 63 and B 64. When the entrance door 70 is opened, the outdoor air blown out from the heat exchange ventilation system has a high static pressure and is more likely to flow out to the outside through the opening of the entrance door 70, thus further reducing the intrusion of outside air.

[0048] Furthermore, if the building is large, the interior can be divided into zones, and the above embodiments 1 and 2 can be used in combination. Both Embodiment 1 and Embodiment 2 utilize spaces within a building where people move around. Since these spaces are not areas where residents spend long periods of time, the equipment can be positioned to maximize the performance of air conditioners and fans, and the operating noise of these devices is less likely to affect residents. Furthermore, fans can be easily stored in these locations. Furthermore, the air conditioner 30a is installed above the corridor 11 of the stairwell 12 and blows air in a nearly horizontal direction, so people going in and out of the stairwell 12 are not directly hit by the blown airflow 33a. [Industrial applicability]

[0049] It allows for easy air conditioning of the entire interior using occupant movement spaces such as stairwells and corridors, and also enables the air conditioning of multiple zones within a building according to the capacity of the air conditioners, making it applicable to air conditioning in large commercial facilities, hospitals, and other buildings with large floor areas. [Explanation of symbols]

[0050] 1. Building 12 Staircase 9a, 9b, 9c, 9d Outlet grille (intake section) 18a, 18b, 18c, 18d Outlet grille (intake section) 30a air conditioner 33. Airflow from air conditioners 41a, 41b, 41c, 41d Second floor fan 40a, 40b, 40c, 40d first floor blower 52 Exhaust section 55 Discharge section 61 Buildings 66 Corridor 68a, 68b, 68c, 68d, 68e, 68f Air outlet grille 30b Air conditioner 80 Ceiling-mounted fan 81 Underfloor ventilation fan 90 Discharge section

Claims

1. The building has return sections adjacent to multiple rooms, The aforementioned room is equipped with an air intake that blows out air supplied from a blower. Each of the aforementioned rooms is provided with an exhaust section that opens to the return section. The return section is provided with at least one air conditioner and multiple intake ports for blowers, avoiding the direction of airflow from the air conditioner. The blower and the intake section are connected by a duct. The intake port of the blower is installed below the outlet of the airflow from the air conditioner. The vertical airflow control plate of the air conditioner is set so that the airflow from the air conditioner is blown out in a substantially horizontal direction. The total airflow from the multiple blowers is made greater than the air conditioning airflow from the air conditioner. In the return section, the blown airflow from the air conditioner is diffused while entraining the surrounding air, the airflow direction is reversed, and it is merged with the intake airflow of the blower to form a circulating airflow that mixes with the airflow. The temperature difference between the temperature of the airflow blown into each of the aforementioned rooms and the room temperature is made smaller than the temperature difference between the temperature of the airflow blown into the air conditioner and the room temperature in each of the aforementioned rooms. A method for constructing an air conditioning system characterized by the following features.

2. The method for installing the air conditioning system according to claim 1, characterized in that the stairwell within the building is designated as the return section.

3. The method for installing an air conditioning system according to claim 1, characterized in that a corridor within the building is designated as the return section.

4. A method for installing an air conditioning system according to any one of claims 1 to 3, characterized in that the direction of the discharge of the airflow from the air conditioner is substantially horizontal.

5. A method for constructing an air conditioning system according to any one of claims 1 to 4, characterized in that at least one exhaust outlet is provided above the air conditioner.

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