Air conditioning system

Abstract

To prevent comfort from being impaired.SOLUTION: An air conditioning system comprises an air conditioner that blows temperature-controlled air into a first compartment among a plurality of compartments separated by partition parts within a building, and a blower that is installed in the partition part between a second compartment adjacent to the first compartment and the first compartment and blows air from the first compartment to the second compartment. An air volume of the blower per minute is 50% or less of the volume of the second compartment.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] FIELD OF THE DISCLOSURE An embodiment of the present invention relates to an air conditioning system. [Background technology]

[0002] Conventionally, in a living space having a first space that is cooled or heated by an air conditioning system, and a second space adjacent to the first space and separated by a partition, a technology is known that can achieve air conditioning of the entire living space by equipping the partition with a fan device that sends cool or warm air from the first space to the second space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-127965 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned conventional technology has a problem in that the air volume of the fan device may impair the comfort of people in the room. For example, when the air volume of the fan device per unit time becomes large, people in the room are exposed to a constant air flow, which may cause a draft feeling (discomfort).

[0005] The disclosed technology has been made in consideration of the above points, and aims to provide an air conditioning system that can suppress a loss of comfort. [Means for solving the problem]

[0006] An air conditioning system according to one aspect of the present disclosure includes an air conditioner that blows temperature-controlled air into a first section among a plurality of sections separated by partitions in a building, and a blower that is installed in the partition between a second section adjacent to the first section and the first section and blows air from the first section to the second section. The air volume of the blower per minute is 50% or less of the volume of the second section. Effect of the Invention

[0007] According to one aspect, loss of comfort can be suppressed. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a layout diagram showing an example of a building equipped with an air conditioning system according to an embodiment. [Diagram 2] FIG. 2 is an explanatory diagram illustrating an example of installation of a blower and an opening. [Diagram 3] FIG. 3 is an explanatory diagram showing an example of a simulation result of an air current in a room. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an air conditioning system according to an embodiment will be described with reference to the drawings. Components having the same functions in the embodiments will be given the same reference numerals, and duplicated descriptions will be omitted. Note that the air conditioning system described in the following embodiment is merely an example, and does not limit the embodiment. In addition, the following embodiments may be appropriately combined within a range that does not cause contradiction.

[0010] Fig. 1 is a diagram showing an example of a building equipped with an air conditioning system according to an embodiment. As shown in Fig. 1, the inside of a building 1 equipped with an air conditioning system 10 is divided into a hall 3 as a space not intended for people to stay in, and a plurality of compartments such as rooms 5a, 5b, 5c as spaces intended for people to stay in, by partitions 2 such as wall materials, floor materials, and doors.

[0011] The hall 3 is adjacent to the rooms 5a, 5b, and 5c, and is a section used as a passageway when moving between the rooms 5a, 5b, and 5c. For example, the building 1 may be a two-story residence, and the hall 3 may be configured to be shared between the first and second floors where the staircase 4 is installed.

[0012] An air conditioner 11 in an air conditioning system 10 is installed in the hall 3. The air conditioner 11 is an air conditioner that blows out temperature-adjusted air (temperature-controlled air). The air conditioner 11 is, for example, a so-called wall-mounted air conditioner that is installed in a wall portion in the partition section 2 of the hall 3. An air conditioning outdoor unit (not shown), which serves as a heat source for the air conditioner 11, may be installed outside the building 1.

[0013] The rooms 5a, 5b, and 5c are a living room, a kitchen room, a bedroom, a children's room, etc. In the following description, the rooms 5a, 5b, and 5c will be referred to as rooms 5 unless otherwise specified. A blower and an opening for the air conditioning system 10 are provided in the partition 2 between the hall 3 and the rooms 5.

[0014] Fig. 2 is an explanatory diagram for explaining an example of the installation of a blower and an opening. As shown in Fig. 2, a blower 12 that blows air from the hall 3 to the living room 5 is provided in the partition 2 between the hall 3 and the living room 5, for example, in the upper part of the wall that constitutes the partition 2. Therefore, a part of the temperature-controlled air blown out from the air conditioner 11 is guided into the living room 5 by the blower 12.

[0015] In addition, the partition 2 between the hall 3 and the living room 5 has an opening 13, for example, in the lower part of the wall constituting the partition 2. The opening 13 may be, for example, a louver or an undercut of a door constituting the partition 2. As the blower 12 blows air from the hall 3 to the living room 5, ventilation is performed from the living room 5 to the hall 3 through the opening 13.

[0016] In this way, in air conditioning system 10, a portion of the temperature-controlled air by air conditioner 11 installed in hall 3 is guided into living room 5 by blower 12. The temperature-controlled air guided into living room 5 then circulates within the room, and then returns to hall 3 through opening 13. With this flow of temperature-controlled air, air conditioning system 10 achieves temperature control in hall 3 and living room 5 within building 1.

[0017] More specifically, the air conditioning system 10 achieves temperature control in the rooms 5a, 5b, and 5c by circulating air from the hall 3 to each of the rooms 5a, 5b, and 5c using a blower 12 and openings 13 provided in the partitions 2 between the hall 3 and each of the rooms 5a, 5b, and 5c.

[0018] Here, the air volume per minute of the fan 12 that blows the air from the hall 3 to the living room 5 is set to 50% or less of the volume of the living room 5. In addition, the air volume per minute of the fan 12 is set to 10% or more of the volume of the living room 5.

[0019] In air conditioning system 10, by setting the upper limit of the air volume per minute of blower 12 to 50% of the volume of room 5, it is possible to prevent people in room 5 from feeling a draft (discomfort). Also, in air conditioning system 10, by setting the lower limit of the air volume per minute of blower 12 to 10% of the volume of room 5, it is possible to appropriately regulate the temperature in room 5 (setting the room temperature of room 5 as the target temperature).

[0020] Here, we will explain, using as an example the results of a simulation of the airflow in room 5, how setting the upper limit of the airflow volume per minute of blower 12 to 50% of the volume of room 5 can prevent people in room 5 from feeling a draft (discomfort).

[0021] Fig. 3 is an explanatory diagram showing an example of a simulation result of airflow in a living room. As shown in Fig. 3, the simulation of airflow is performed by blowing air from blower 12 into a room that matches the shape of living room 5.

[0022] Here, the air volume of the blower 12 is V [m3 / min]. The dimensions of the room 5 are a [m] for the short side (width), b [m] for the long side (depth), and c [m] for the height, and the volume of the room 5 is a·b·c [m 3 The actual dimensions of the room 5 to be simulated are a = 2.5 [m], b = 3.7 [m], and c = 2.4 [m], and the room is approximately 6 tatami mats in size.

[0023] The air volume V' [m 3 The condition for [ ] is 10%<(air volume per minute of blower 12) / room volume<50%, and is therefore given by the following formula (1). 0.1 <V´ / (a·b·c)<0.5…(1)

[0024] The relationship between airflow speed and volume is given by the following formula (2). Wind speed S [m / s] = V / (60 · cross-sectional area through which air passes)…(2)

[0025] In the airflow simulation in Fig. 3, it can be seen that airflow 20 generated by blower 12 circulates around two times inside living room 5. Here, to explain the airflow flowing inside living room 5, an ac-projected cross section parallel to a plane passing through sides a and c is used. The area where blower 12 is installed will be explained as being the upper right of the ac-projected cross section.

[0026] The airflow 20 generated by the blower 12 passes through the upper right area of ​​the ac projected cross section, hits the wall opposite the blower 12, moves to the lower left of the ac projected cross section, returns to the side where the blower 12 is installed, and rises along the wall where the blower 12 is installed, making one circuit inside the room. The airflow 20 then leaves the wall where the blower 12 is installed, is attracted by the airflow generated by the blower 12, reaches the upper right part of the ac projected cross section, flows downward on the ac projected cross section, and then flows toward the wall where the blower 12 is installed to make another circuit. Therefore, the airflow makes two round trips inside the room (passes the ac projected cross section four times). Therefore, the cross-sectional area through which the airflow passes is defined as a·c / 4 [m 2 ].

[0027] Equation (2) can be transformed as follows by setting the cross-sectional area through which the airflow passes as a·c / 4: S = V / (60·a·c / 4) =V / (15a c)

[0028] By applying the result of transforming equation (2) to equation (1), equation (1) can be transformed as follows: 0.1b / 15 <V / (15a·c) / 0.5b / 15 0.0066b <S<0.033b[m / s]

[0029] Here, if we apply the actual dimension of b, which is 3.7 m, the upper limit of S becomes a value slightly exceeding approximately 0.1 m / s.

[0030] Shinichi Tanabe, "Evaluation of Thermal Comfort in Housing," Housing Research Foundation Annual Research Report No. 23, 1996, shows the draft tolerance limit (the rate of people dissatisfied due to drafts as a function of average wind speed, room temperature, and airflow turbulence) in Figure 14 and other figures. According to this document, the rate of people dissatisfied increases when the average wind speed (S) exceeds slightly about 0.1 [m / s]. Therefore, in the air conditioning system 10, by setting the upper limit of the air volume per minute of the blower 12 to 50% of the volume of the living room 5, the upper limit of the average wind speed (S) in the room can be set below the value at which the rate of people dissatisfied due to drafts increases. Here, the rate of people dissatisfied is the percentage of people who showed discomfort due to wind speed among the subjects.

[0031] Next, the fact that the temperature inside room 5 can be regulated by setting the lower limit of the air volume per minute of fan 12 to 10% of the volume of room 5 will be described with reference to test results.

[0032] The test was performed under constant outdoor air conditions (33°C, sunny), and the temperature change in the rooms was measured by changing the air volume of the blower 12 (fan) in "Room A", "Room B", and "Room C", which correspond to rooms 5a, 5b, and 5c. The insulation grade was 5 (UA value 0.6 W / m 2), with room A facing south and room C facing north. The amount of solar radiation was assumed to be in the Tokyo summer.

[0033] The air volume setting conditions were tested with the air volume per minute of the blower 12 set to less than 10% of the volume of Room A, Room B, and Room C, and set to 10% or more.

[0034] When it was set to less than 10%, the room temperature did not reach the target value of 28°C set in this test. In contrast, when it was set to 10% or more, the room temperature reached the target value. Therefore, it was found that with air conditioning system 10, the temperature in the room can be regulated by setting the lower limit of the air volume per minute of blower 12 to at least 10% of the volume of the room.

[0035] As described above, the air conditioning system 10 includes an air conditioner 11 that blows temperature-controlled air into a first compartment among multiple compartments separated by partitions 2 within a building 1. The air conditioning system 10 also includes a blower 12 that is installed in the partition 2 between a second compartment adjacent to the first compartment and the first compartment, and blows air from the first compartment to the second compartment. The air volume per minute of the blower 12 is set to 50% or less of the volume of the second compartment. This allows the air conditioning system 10 to achieve temperature control that does not give people in the second compartment a feeling of draft.

[0036] Moreover, the air volume per minute of the blower 12 is set to 10% or more of the volume of the second section. This allows the air conditioning system 10 to regulate the temperature in the second section.

[0037] In addition, as a test assuming the influence of solar radiation, a test was conducted in which windows were installed on two sides facing the exterior wall of Room A. The size of the windows was set to 1 / 4 of the area of ​​the wall. In this case, it was found that the room temperature could be set to the target value by setting the air volume per minute to about 25% of the volume of the room. In other words, as mentioned above, it is required that the lower limit of the air volume per minute of the fan 12 is at least 10% of the volume of the room, but it is preferable that it is 25% or more to deal with the influence of solar radiation.

[0038] In addition, in air conditioning system 10, the first section into which temperature-controlled air is blown out by air conditioner 11 is designated as hall 3, and the second section into which temperature-controlled air is guided from hall 3 by blower 12 is designated as living room 5. Air conditioning system 10 can more reliably control the temperature in hall 3 while also controlling the temperature in living room 5. For example, in winter (when heating is in operation), the temperature on the hall 3 side generally tends to be lower than that of living room 5, which can increase discomfort when leaving living room 5 to hall 3. In contrast, air conditioning system 10 can reliably control the temperature in hall 3, thereby preventing discomfort when leaving living room 5 to hall 3.

[0039] Furthermore, in air conditioning system 10, fans 12 are installed in each of partition sections 2 between a plurality of second sections (rooms 5a, 5b, 5c) and the first section (hall 3). This allows air conditioning system 10 to circulate temperature-controlled air from air conditioner 11 installed in hall 3 to each of rooms 5a, 5b, 5c. In other words, air conditioning system 10 can achieve temperature control in rooms 5a, 5b, 5c without installing air conditioners 11 in each of rooms 5a, 5b, 5c. [Explanation of symbols]

[0040] 1. Building 2…Partition 3. Hall 4...Stairs 5, 5a~5c…Room 10. Air conditioning system 11…Air conditioner 12...Blower 13…Opening

Claims

1. an air conditioner that blows out temperature-controlled air into a first compartment among a plurality of compartments separated by partitions within a building; a blower that is installed in the partition between a second compartment adjacent to the first compartment and the first compartment and blows air from the first compartment to the second compartment; Equipped with The air volume per minute of the blower is set to 50% or less of the volume of the second section. An air conditioning system characterized by:

2. The air volume per minute of the blower is set to 10% or more of the volume of the second section.

2. The air conditioning system according to claim 1 .

3. The air volume per minute of the blower is set to 25% or more of the volume of the second section.

2. The air conditioning system according to claim 1 .

4. the first section is a hall; The second section is a living room.

2. The air conditioning system according to claim 1 .

5. The second compartment is a plurality of compartments, The blowers are installed in each of the partitions between the second compartments and the first compartment.

2. The air conditioning system according to claim 1 .

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