JP2020186874A - Air conditioning system, and house - Google Patents

Abstract

To provide an underfloor air conditioning system which is ductless, requires no duct piping, and sufficiently performs a cooling/heating function.SOLUTION: An air conditioning system takes in conditioned air of an air conditioner 15 into an underfloor space 8 to condition the air in above-floor spaces 2, 3. The air conditioner 15 is provided with an air suction part 15a and an air blow-out part 15b. During heating operation, warm air is blown out; during cooling operation, cool air is blown out. The underfloor space 8 is in a form of a highly airtight and highly heat insulating chamber shielded from outside and is provided with a suction port 20 opening to the air blow-out part 15b of the air conditioner 15 and an air supply port 21 opening to floor surfaces 6a, 7a in the above-floor spaces 2, 3. The air supply port 21 is provided with an air supply device 16 which blows out and supplies the conditioned air in the underfloor space 8 to the above-floor space 2, 3. Thus, when the conditioned air blown out by the air conditioner 15 is blown out and supplied for the above-floor spaces 2, 3 by air supply devices 16,16, . . . via the underfloor space 8 during the heating/cooling operation.SELECTED DRAWING: Figure 1

Description

The present invention relates to an air conditioning system and a house, and more specifically, is suitable for a house such as a detached house having a highly airtight and highly insulated structure, and takes in the warm and cold air of an air conditioner into the underfloor space to create an above-floor space such as a living room. Regarding underfloor air conditioning technology for air conditioning.

As the use of heating and cooling in houses increases, the energy consumption of houses also increases, and energy saving measures by making houses highly airtight and highly insulated are required. It is said that it is the whole building air conditioning that can make the best use of the merits of such a highly airtight and highly insulated house, and the whole building air conditioning is beginning to be adopted in general houses.

As an air conditioning system suitable for air conditioning in the entire building, a so-called underfloor air conditioning system is known in which the warm and cold air of an air conditioner is taken into the underfloor space to air-condition the space above the floor such as a living room (see, for example, Patent Document 1).

In this air conditioning system, as shown in FIG. 14, an indoor unit d of a heat pump type air conditioner (hereinafter referred to as "air conditioner") connected to an outdoor outdoor unit c is air-conditioned in the underfloor space b of the house a. In addition to being installed as a device, an exhaust port g and an air supply port h are provided on the floor portion f between the above-floor space e and the underfloor space b of the house a, and the exhaust port g and the air conditioner d are provided. The air supply port h and the air conditioner d's above-floor outlet j are connected to each other by ducts k and l, respectively. Further, the indoor unit d is provided with an underfloor blowing portion m to the underfloor space b, and the floor portion f is provided with an air supply port n different from the air supply port h not via a duct. ..

The air conditioner d is controlled to dissipate heat from either or both of the above-floor outlet j and the underfloor outlet m during the heating operation, and cools the air from the above-floor outlet j during the cooling operation. However, it is configured so that the underfloor outlet m is controlled so as not to allow cooling.

By the way, in an actual house a, there are generally a plurality of living rooms that are the above-floor space e, and the exhaust port g and the air supply port h are provided on the floor portion f of each of the living rooms e, e, ... Each will be provided. Therefore, in this air conditioning system, the ducts k and l are arranged so as to stretch over all the living rooms e, e, ..., And air conditioning (heating, cooling) by warm and cold air is performed through these ducts k, l, ... It has been.

JP-A-2010-243142

However, in such a configuration, ducts k, l, ... Must be stretched like octopus legs across all living rooms e, e, ..., And the duct piping that requires skill becomes complicated, and this air conditioning system There was a problem that the initial investment was high.

In addition, the ducts k, l, ... Stretched around the underfloor space b are troublesome because the filters must be replaced regularly, and there is also a problem that maintenance labor and work cost are required.

Further, in general, the ducts k and l do not reach small spaces such as dressing rooms and bathrooms other than the living rooms e, e, ..., And air conditioning (heating / cooling) by the air conditioning system is not performed. The temperature difference between e, e, ..., which is a comfortable living room with heating / cooling, and the above-mentioned dressing room or bathroom without heating / cooling tends to be large, and the resident feels uncomfortable every time he / she moves. The heat efficiency was also poor. Especially during the heating period, there was also the problem of so-called heat shock for the elderly.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an underfloor air-conditioning system that does not require duct piping and can sufficiently exert a cooling and heating function. ..

The present invention has been made as a result of various test studies based on the following points of view by the present inventors.

That is, the present inventors are required to have both a function of heating an above-floor space and a function of cooling in an underfloor air-conditioning system, but in a conventional so-called ductless underfloor air-conditioning system that does not use a duct, a cooling function is required. We paid attention to the fact that it was not fully exhibited and it was practically difficult or impossible to put it into practical use.

Specifically, in a conventional ductless underfloor air-conditioning system, it is difficult for warm and cold air to spread throughout the underfloor space, and in particular, cooling is theoretically possible, but practically difficult or impossible to put into practical use. I was facing the problem of being there.

In other words, in an actual house, there is a rising part of the foundation concrete (foundation part) in the underfloor space, and the existence of this rising part is a resistance to the flow of air in the underfloor space, and it was blown out from the air conditioner. Air-conditioned air (warm air, cold air) does not flow smoothly through the underfloor space, stays near the air outlet of the air conditioner, and is difficult to spread throughout the underfloor space. As a result, effective heating and cooling effects can be obtained in each room. I can't.

Further, in the case of heating, since the warm air is light, the air supply port opened in the space above the floor naturally rises to the space above the floor, and there is no particular problem in the heating effect. However, in the case of cooling, the cold air is heavy, so the above supply It is difficult to rise from the air vent to the space above the floor, and it stays near the floor surface of the space above the floor, so an effective cooling effect cannot be expected. Therefore, in order to obtain an effective cooling effect, the set temperature of the air conditioner must be lowered more than necessary, and if the set temperature is lowered excessively in this way, the temperature of the floor surface of the above floor space will rise. It goes down too much and makes the resident uncomfortable.

Further, in the case of air conditioning, if the cold air stays in the underfloor space, dew condensation is likely to occur, and it is practically difficult to detect the dew condensation in the underfloor space. As a result, there is a problem that mold or the like is generated in the underfloor space. there were.

For this reason, in the conventional ductless air conditioning system, cooling operation is theoretically possible, but in practice it is difficult or impossible to put it into practical use.

The present inventors have completed the present invention as a result of further tests and research based on the findings thus obtained.

That is, in order to achieve the above object, the air conditioner system of the present invention takes in warm and cold air, which is the air conditioner air of the air conditioner, into the underfloor space of the house to air-condition the space above the floor such as a living room. Is equipped with an air suction part and an air blowing part, and is configured to blow out warm air (warm air) during heating operation and cold air (cold air) during cooling operation, and the underfloor space is highly airtight so as to be shielded from the outside. It is in the form of a highly insulated chamber, and is provided with an intake port that opens to the air outlet of the air conditioner and an air supply port that opens to the floor surface of the above-floor space, and the air in the underfloor space is blown onto the floor at the air supply port. An air supply device that blows out and supplies to the space is provided, and during the heating operation, the warm air blown from the air conditioner is blown out to the above-floor space by the air supply device via the underfloor space, and the cooling operation is performed. Occasionally, the cold air blown from the air conditioner is blown out to the above-floor space by the air supply device via the underfloor space.

As a preferred embodiment, the following configuration is adopted.
(1) The air conditioner is in the form of an indoor unit of a heat pump type air conditioner connected to an outdoor unit installed outdoors, and is installed at a boundary between an above-floor space and an underfloor space to suck in air. The structure is such that the air in the space above the floor is sucked in from the portion and the air conditioning air is blown out from the air blowing portion into the space under the floor.

(2) The air conditioner is in the form of a wall-mounted indoor unit, and a part of the air conditioner faces the underfloor space or the whole is arranged in the above-floor space.

(3) The air conditioner is in the form of a wall-mounted indoor unit, and is arranged on the floor surface of the floor space.

(4) The blown air volume of the air supply device is set so that the maximum reaching height of the air blown and supplied from the air supply port is within the range of the reference height.

(5) The reference height is a height at which the air blown out from the air supply port to the floor space and supplied to the floor space is diffused throughout the floor space.

(6) The reference height is set to 1.0 m to 2.5 m.

(7) The air supply device includes an air supply gallery that forms the air supply port and an air supply fan that is integrally provided in the air supply gallery. In the air supply fan, the suction port is the space under the floor. At the same time, the outlet is integrally connected to the opening of the air supply gallery.

(8) The opening of the air supply gallery is composed of a blowout opening to which the air supply fan is connected and an opening, and a communication port that communicates the underfloor space and the above-floor space.

(9) At least one air supply device is installed on the same floor surface in each living room in the above floor space.

(10) The total amount of air blown from the air supply device installed in the space above the floor is set to be larger than the amount of air blown from the air conditioner into the space under the floor.

(11) In a house in the form of a two-story house, each floor of the first floor and the second floor has the above configuration.

(12) A ventilation device for ventilating the above-floor space is installed in the underfloor space, and this ventilation device sucks in the air in the above-floor space and exhausts it to the outside, and also sucks in fresh outside air and blows it out into the underfloor space. The fresh outside air blown out into the underfloor space is mixed with the conditioned air blown out from the air conditioning device, and the mixed conditioned air is blown out and supplied to the above floor space.

(13) The ventilation device sucks in the air in the above-floor space and exhausts it to the outside by an exhaust duct connected to an exhaust port opening to the floor surface of the above-floor space, and sucks in outside air to the underfloor space without a duct. It is said that it blows out with.

(14) The ventilation device includes a heat exchange unit that exchanges heat between the air in the space above the floor to be exhausted to the outside and the outside air blown out to the space under the floor.

Further, the house of the present invention is characterized by being provided with the above-mentioned air conditioning system of the present invention.

The air conditioner system of the present invention takes in warm and cold air, which is the air conditioner air of the air conditioner, into the underfloor space of the house to air-condition the space above the floor such as a living room, and the air conditioner has an air suction unit and an air outlet unit. The underfloor space is in the form of a highly airtight and highly insulated chamber that is shielded from the outside, and is configured to blow out hot air during heating operation and blow out cold air during cooling operation. It is provided with an air conditioner that opens to the air conditioner and an air conditioner that opens to the floor surface of the floor space, and the air conditioner is provided with an air supply device that blows out air from the underfloor space to the floor space for heating. During operation, the warm air blown from the air conditioner is blown and supplied to the floor space by the air supply device via the underfloor space, and during the cooling operation, the cold air blown from the air conditioner blows through the underfloor space. Since it is configured to be blown out to the space above the floor by the air supply device, the unique effects listed below are effectively exhibited, and the air conditioning function is sufficient without the need for duct piping. It is possible to provide an underfloor air conditioning system that can be exerted.

(1) During the heating period, warm air from the warm air blown from the air conditioner into the underfloor space in the form of a highly airtight and highly insulated chamber is blown into the above-floor space through the air supply port that opens to the floor surface of the above-floor space. This is because it is supplied to a certain living room or the like, and during the cooling period, the cold air generated by the cold air blown from the air conditioner into the underfloor space is supplied to the living room or the like through the air supply port. There is no need for complicated duct piping, construction is easy without skill, the installation cost of the air conditioner is low, and the initial investment is low.

(2) Since the air supply port opened from the underfloor space to the floor surface of the above-floor space is provided with an air supply device that blows out the air in the underfloor space to the above-floor space, air flows through the underfloor space. Even if there is a rising part of the foundation concrete (foundation part) that becomes the resistance of the air conditioner, the conditioned air (hot air, cold air) blown out from the air conditioner stays in the vicinity of the air conditioner due to the suction force of the air supply device. It flows smoothly through the underfloor space without doing anything, and it spreads over the entire underfloor space, and at the same time, it is blown out from the air supply port to each living room to effectively exert the heating and cooling effects.

In particular, even for air conditioners that were difficult or impossible to put into practical use in the past, as a result of the cold air rising from the air supply port to the floor space due to the blowing force of the air supply device, it is near the floor surface of the floor space. The cold air is evenly diffused in the living room without stagnation, and the cooling effect is effectively exerted throughout the living room.

Further, even during the cooling operation, due to the blowing force of the air supply device, the cold air flows smoothly without stagnation in the underfloor space, dew condensation is unlikely to occur, and there is no possibility that mold or the like is generated in the underfloor space.

Furthermore, by spreading the conditioned air throughout the underfloor space, air conditioning (heating / cooling) is also performed in small spaces such as dressing rooms and bathrooms other than the living room in the above-floor space, and the entire above-floor space is uniform and comfortable with a small temperature difference. As a result of being able to enjoy a good heating / cooling effect, the resident does not feel uncomfortable every time he / she moves, and the thermal efficiency is good. In particular, there is less risk of heat shock for the elderly during the heating period, which has been a problem in the past.

It is a front sectional view which shows the schematic structure of the house provided with the air-conditioning system which is Embodiment 1 of this invention. It is a top view which shows the structure of the 1st floor part of the house. It is also a plan view showing the structure of the second floor of the same house. The arrangement configuration of the air conditioner in the air conditioning system is shown, FIG. 4A is a side sectional view, FIG. 4B is a plan view showing a partial incision, and FIG. 4C is a front sectional view. It is a perspective view which shows the air supply device of the air-conditioning system installed in the floor part of each floor part in the house. It is a side view for demonstrating the set height of the blowout air volume of the air supply device. The configuration of the air supply device is shown, FIG. 7 (a) is a plan view, FIG. 7 (b) is a front view, FIG. 7 (c) is a bottom view, and FIG. 7 (d) is a side view. It is a front sectional view which shows the schematic structure of the house provided with the air-conditioning system which is Embodiment 2 of this invention. It is a front sectional view which shows the schematic structure of the house provided with the air-conditioning system which is Embodiment 3 of this invention. It is a top view which shows the structure of the 1st floor part of the house. It is also a plan view showing the structure of the second floor of the same house. It is a front sectional view which shows the schematic structure of the house provided with the air-conditioning system which is Embodiment 4 of this invention. The layout configuration of the air conditioner in the air conditioning system according to the fifth embodiment of the present invention is shown. FIG. 13A is a side sectional view, FIG. 13B is a plan view, and FIG. 13C is a front sectional view. It is a front sectional view which shows the schematic structure of the house equipped with the conventional air conditioning system.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the same reference numerals indicate the same constituent members or elements throughout the drawings.

Embodiment 1
A house equipped with an air-conditioning system according to the present invention is shown in FIGS. 1 to 7, and specifically, the house 1 is provided with an air-conditioning system AS of a whole building air-conditioning system.

The house 1 of the illustrated embodiment has a two-story two-story structure, and includes a floor space 2 on the first floor and a floor space 3 on the second floor as the floor space.

The floor space 2 on the first floor is composed of living rooms 2a, 2a, ... As the main part, and the floor space 3 on the second floor is composed of living rooms 3a, 3a, ... As the main part, and further includes stairs, atrium, etc. It is equipped with a through space (floor space) 4 from the 1st floor to the 2nd floor, and a small space such as entrance 5a, toilet 5b, dressing room / washroom 5c, bathroom 5d, push-in 5e, closet 5f, etc. Below the space 2 and the space 3 above the floor on the second floor, spaces 8 and 9 below the floor are provided with the floor portions 6 and 7 separated from each other.

Here, it is preferable that the house 1 is provided with a highly airtight and highly heat-insulated structure suitable for air conditioning in the entire building, that is, a function of preventing air flow between the inside and outside of the house 1, for example, indoor floor spaces 2 and 3 of the house 1. High airtightness that prevents drafts from entering from the outside of the house 1 and does not leak indoor air to the outside, and a function to prevent heat transfer and heat transfer between the inside and outside of the house 1, for example, in winter It is preferable to have high heat insulation so that the warm air of the indoor floor spaces 2 and 3 of the house 1 does not escape to the outside and the cold air of the indoor floor spaces 2 and 3 of the house 1 does not escape to the outside in summer.

For this purpose, specifically, in the house 1 of the illustrated embodiment, the foundation concrete (foundation portion) 10, the outer wall 11, the roof portion 12, etc., which are the parts in contact with the outside, have high airtightness without gaps. It is preferable that a heat insulating material that is secured and has excellent heat insulating performance is used, and that windows 13, 13, ... Are sashes containing double glazing or the like.

Further, as will be described later, it is preferable that the underfloor spaces 8 and 9, which are the main components of the air conditioning system AS, have an airtight / heat insulating structure higher than the above-floor spaces 2 and 3 inside the house 1.

The air-conditioning system AS is a so-called underfloor air-conditioning system that takes in the warm and cold air of the air-conditioning device 15 into the underfloor space 8 on the first floor of the house 1 and air-conditions the above-floor spaces 2 and 3 on the first and second floors. 15. The underfloor spaces 8 and 9 and the air supply device 16 are the main parts.

The air conditioner 15 is provided with an air suction unit 15a and an air outlet unit 15b, and has a configuration in which hot air is blown out during heating operation and cold air is blown out during cooling operation. Specifically, a conventional general household air conditioner is known. Has been adopted.

As the home air conditioner, as will be described later, since the air conditioner 15 is a so-called ductless type that does not use a duct, it is possible to adopt a normal wall-mounted air conditioner. In the illustrated embodiment, the wall-mounted air conditioner is indoors. The machine is being used.

That is, the air conditioner 15 of the illustrated embodiment is in the form of a wall-mounted indoor unit of a heat pump type air conditioner connected to an outdoor unit (not shown) installed outdoors, and is in the form of a floor space 2 on the first floor. It is installed in the floor portion 6 which is the boundary portion of the underfloor space 8, sucks the air of the above floor space 2 from the air suction portion 15a, and air-conditioned air of hot air or cold air from the air blowing portion 15b into the underfloor space 8. It is said that it blows out.

Specifically, the air conditioner 15 is in the form of a wall-mounted indoor unit, and a part of the air conditioner 15 faces the underfloor space 8 or all of the air conditioner 15 is arranged in the above-floor space. As shown in FIGS. 4A to 4B, a part of the air conditioner 15, that is, the lower half of the air conditioner 15, is arranged so as to face the underfloor space 8.

That is, in FIG. 4, the floor portion 6 on the first floor has a foundation "27 laid on the foundation concrete 10, and large pulls 28, 28, ... Are connected and fixed to the foundation 27 at predetermined intervals (usually 910 mm). , The floor material 29 is stretched on these large pulls 28, 28, ....

The floor material 29 is provided with an opening 20 corresponding to the air conditioner 15, and the air conditioner 15 is inserted through the opening 20 in the vertical direction, and the air suction portion 15a is provided in the space 2 on the floor. The air-conditioning portion 15b is arranged so as to face the underfloor space 8. Reference numeral 31 denotes a louver for adjusting the wind direction provided in the air blowing portion 15b.

The opening 20 of the floor portion 6 is formed to be larger than the plane outer peripheral area of the air conditioner 15, and the cover 15c provided on the front surface of the air conditioner 15 is set to a size that can be opened and closed at the time of maintenance. The air conditioner 15 is provided at a position such that it is arranged inside the heat insulating material 32 (described later) of the foundation concrete 10 (FIG. 4A).

Further, as shown in FIGS. 4A and 4C, the air conditioner 15 is provided between the opening 20 and the air conditioner 15 in order to maintain the airtightness between the above-floor space 2 and the underfloor space 8. It is sealed by a sealing member 33 over the entire outer circumference of the above. As a result, the opening 20 forms an intake port that opens into the air blowing portion 15b of the air conditioner 15 in the underfloor space 8, as will be described later.

The cooling and heating capacity of the air conditioner depends on the structure of the house 1 actually applied, and specifically, the equipment suitable for the house 1 is selected and adopted based on the actual operation test. ..

The underfloor spaces 8 and 9 are in the form of a highly airtight and highly heat-insulated chamber that is shielded from the outside, and are a closed space having a higher airtight and heat-insulating structure than the above-floor spaces 2 and 3.

For example, the underfloor space 8 on the first floor is specifically formed by the foundation concrete 10 and the floor portion 6 on the first floor, and is a sealed space isolated from the outside. Further, the entire inner circumference of the underfloor space 8 is covered with a sealing material 33 having high heat insulating properties, so that the heat transfer and heat transfer between the inside and outside of the underfloor space 8 are reliably blocked. There is.

The underfloor space 8 includes an intake port 20 that opens to the air outlet portion 15b of the air conditioner 15, and an air supply port 21 that opens to the floor surface 6a of the floor portion 6 of the above-floor space 2. It is connected to the underfloor space 9 on the second floor via the above.

The underfloor space 9 on the second floor is connected to the underfloor space 8 on the first floor via the communication passage 17 as described above, and the communication port 18 communicating with the floor space 2 on the first floor and the floor space 3 on the second floor. It is provided with an air supply port 21 that opens to the floor surface 7a of the floor portion 7.

The air supply port 21 is a portion that blows out and supplies air from the underfloor space 8 to the above-floor spaces 2 and 3, and as shown in FIGS. 2 and 3, each of the above-floor spaces 2 and 3 on the first and second floors. At least one is provided on each of the floor surfaces 6a, 7a in the living rooms 2a, 3a, ..., And the air supply devices 16 are provided in the air supply ports 21, 21, ..., respectively.

The air supply device 16 blows out and supplies the air in the underfloor space 8 to the above-floor spaces 2 and 3, and specifically, has a unit structure integrally formed with the air supply port 21. In other words, at least one air supply device 16 integrated with the air supply port 21 is installed on each of the floor surfaces 6a and 7a in each of the living rooms 2a and 3a of the above floor spaces 2 and 3. ..

As shown in FIGS. 2 and 3, the specific installation location of the air supply device 16, that is, the air supply port 21, is set at the corners of the living rooms 2a, 3a, ..., And blows out from the air supply device 16. It is configured so that the supplied conditioned air (warm air, cold air) does not directly hit the human body.

The specific number of installations of the air supply device 16 in each of the living rooms 2a and 3a is set according to the size and structure of each of the living rooms 2a and 2b for the purpose of sufficiently effectively and efficiently exerting the following functions. Will be done.

The air supply device 16 has (a) a function of ensuring a sufficient supply of conditioned air to each of the above-floor spaces 2 and 3, and (b) ensuring a smooth distribution of conditioned air in the underfloor space 8 on the first floor. It is configured to have two major functions as well as functions, and for that purpose, it is specifically configured to satisfy the following conditions (i) and (ii).

(I) As shown in FIG. 6, the blowout air volume of the air supply device 16 is such that the maximum reachable height (blowout height) of the conditioned air blown out and supplied from the air supply port 21 is the reference height H. Is set to. This condition is set so that the conditioned air, particularly cold air (cold air), effectively exerts the cooling effect of each of the living rooms 2a and 3a.

Specifically, the reference height H is a height at which the conditioned air blown out from the air supply port 21 to the floor spaces 2 and 3 and particularly cold air diffuses over the floor spaces 2 and 3. It is set to 0 m ≦ H ≦ 2.5 m, and more preferably 1.2 m ≦ H ≦ 2.3 m.

That is, in the case of heating, since the warm air (warm air) is light, the air supply port 21 opened on the floor surfaces 6a and 7a of the floor spaces 2 and 3 naturally rises to the floor spaces 2 and 3, but in the case of cooling. Because the cold air (cold air) is heavy, it is difficult for the air supply port 21 to rise to the floor spaces 2 and 3, and the air stagnates near the floor surfaces 6a and 7a of the floor spaces 2 and 3, so that a sufficient cooling effect can be obtained. I can't.

Regarding this point, the present inventors conducted a blowing experiment by installing a commercially available small blower at the air supply port 21 in the test / research stage leading to the present invention, and found that the existing small blower was required for the present invention. None of the above-mentioned functions (a) are exhibited, particularly the functions required for cooling (the function of effectively cooling the entire living room 2a and 3a).

Taking this as an opportunity, the present inventors can obtain the desired effect by satisfying what kind of conditions are satisfied with respect to the air blown out from the air supply port 21 to the floor spaces 2 and 3, and the above-mentioned ( As a result of conducting an experiment on whether the function of a) can be exhibited, when the blowing height of the air blown from the air supply port 21 exceeds a certain level, conditioned air, that is, not only light hot air but also heavy cold air , I found that it spreads in the air and spreads over a few spaces above the floor.

Then, as a result of repeating the test for obtaining the blowing height at which this effect can be surely and stably obtained, the above-mentioned reference height H was obtained.

If the reference height H is 1.0 m or more, the conditioned air blown out from the air supply port 21 diffuses in the air and spreads over the entire floor space 2 and 3, but is higher than 2.5 m. As a result of directly hitting the ceiling 100 of the floor spaces 2 and 3 and repelling, and the bounced conditioned air colliding with the blown out conditioned air, the uniform diffusion of the conditioned air is disturbed or the human body M is not directly hit. It turned out to be pleasant. It has also been found that when the reference height H is 2.5 m or more, the wind noise of the fan becomes strong and jarring, which also causes discomfort.

The amount of air blown out from the air supply gallery 22 in the air supply device 16 of the illustrated embodiment is set in the range of 150 m ³ / h or more and 300 m ³ / h or less, and is blown out and supplied from the air supply port 21 at this time. The blowing height H of the conditioned air is set to 1.5 m to 2.3 m.

(B) The total amount of air blown out from the air supply devices 16, 16, ... Installed in the above-floor spaces 2 and 3 is set to be larger than the amount of air blown out from the air conditioner 15 into the underfloor space 8. There is.

That is, the underfloor space 8 generally has a rising portion (not shown) of the foundation concrete 10, and the presence of this rising portion is a resistance to air flow in the underfloor space 8. The air conditioner 15 By using an air supply device having an air volume larger than that for the underfloor space 8 on the first floor of the above, the conditioned air blown out from the air conditioner 15 is produced by the air supply device regardless of the presence or absence of the riser. It is forcibly sucked and flows through the underfloor space 8.

The air supply device 16 of the present embodiment is small, and its blown air volume is smaller than that of the air conditioner 15, but the space (underfloor spaces 8 and 9 and above the floor) on which the air supply device 16 is installed and acts. Since the spaces 2 and 3) are one closed space with high airtightness, the total blown air volume obtained by simply adding the air blown amounts of the installed air supply devices 16, 16 ... Is the blown air volume of the air conditioner 15. It was found that the desired function / effect can be obtained by increasing the air volume.

Moreover, as shown in FIG. 2, the installation locations of the air supply devices 16, 16, ..., Especially the installation locations of the floor portion 6 on the first floor, are the room corner portions of the living rooms 2a, 2a, ... Of the above floor space 2. The conditioned air blown out from the air conditioner 15 is forcibly sucked by the air supply devices 16, 16, ... Arranged in a scattered manner on the floor 6, and as a result, the concrete foundation Regardless of the presence or absence of the rising portion, it smoothly flows through the underfloor space 8 and spreads over the entire underfloor space, and is blown out from the air supply ports 21, 21, ... To each living room 2a, "3a, ... The heating and cooling effects of spaces 2 and 3 are effectively exhibited.

As shown in FIG. 5, the specific configuration of the air supply device 16 includes an air supply gallery 22 forming the air supply port 21 and an air supply fan 23 integrally provided in the air supply gallery 22. It has a unit structure composed of.

In the air supply fan 23, the suction port 23a opens in the underfloor space 8, and the outlet 23b is integrally connected to the opening of the air supply gallery 22, that is, the air supply port 21. The air supply capacity of the air supply fan 23 is set so as to satisfy the above conditions (i) and (ii) that can exhibit the two functions (a) and (b) required for the above-mentioned air supply device 16. Has been done.

Further, the room temperature of the living rooms 2a, 3a, ... Of the above-floor spaces 2, 3 is the air volume and temperature of the conditioned air (warm air, cold air (warm air, cold air)) blown from the air supply port 21. The air supply fan 23 is configured to have an air supply capacity for variably adjusting the amount of air blown so that the room temperature set by the temperature control device 15 is stably maintained. Has been done.

As shown in FIGS. 5 and 7, the opening of the air supply gallery 22 includes an outlet 22a to which the outlet 23b of the air supply fan 23 is directly connected and opened, and the underfloor space 8 and the above-floor space 2, 3 It is composed of communication ports 22b and 22b that communicate with each other.

With such a configuration, the circulation of the conditioned air in the conditioned system AS is always stable and smooth as follows.

That is, in the normal operation of the air conditioner 15 (during heating and cooling), the amount of air-conditioned air blown out from the air-blowing portion 15b of the air-conditioning device 15 to the underfloor space 8 is air-conditioned at room temperatures of the above-floor spaces 2 and 3. When it is different from the set temperature of the device 15 (for example, in the heating operation, the room temperature of the floor spaces 2 and 3 is lower than the set temperature of the air conditioner 15 or in the cooling operation, the room temperature of the floor spaces 2 and 3 is different. (When the temperature is higher than the set temperature of the air conditioner 15), until the room temperature of the above-floor spaces 2 and 3 reaches the set temperature of the air conditioner 15, the air-conditioned air blown from the air outlet 15b of the air conditioner 15 to the underfloor space 8 The blown air volume is maintained at the set air volume, and when the room temperature of the above floor spaces 2 and 3 reaches the set temperature of the air conditioner 15, the blown air volume of the air conditioning air blown from the air conditioner 15 to the underfloor space 8 is larger than the set air volume. Will be low or zero.

On the other hand, the amount of conditioned air blown out and supplied from the air supply devices 16, 16, ... To the above-floor spaces 2 and 3 is a constant amount corresponding to the set air volume of the conditioned air of the air conditioner 15.

When the air conditioner 15 blows out conditioned air so that the room temperature of the above-floor spaces 2 and 3 becomes the above-mentioned set temperature, the air pressures of the underfloor spaces 8 and 9 and the above-floor spaces 2 and 3 are equal to each other and balanced. Since it is dripping, air flow through the communication ports 21b and 21b of the air supply garage 22 across the underfloor spaces 8 and 9 and the above-floor spaces 2 and 3 hardly occurs.

On the other hand, when the room temperature of the floor spaces 2 and 3 reaches the above-mentioned set temperature due to the blow-out supply of the conditioned air from the air-conditioning device 15, the blow-out air volume of the conditioned air of the air-conditioning device 15 becomes lower or zero than the above-mentioned set air volume. , The air pressure of the underfloor spaces 8 and 9 and the above-floor spaces 2 and 3 is out of balance, and the air pressure of the underfloor spaces 8 and 9 begins to be lower than that of the above-floor spaces 2 and 3 (negative pressure state). Then, the air flow of the communication ports 21b and 21b of the air supply garage 22 sandwiching the underfloor spaces 8 and 9 and the above-floor spaces 2 and 3 becomes a negative pressure state from the above-floor spaces 2 and 3 and the underfloor spaces 8 and 9 Finally, the air pressures of the underfloor spaces 8 and 9 and the above-floor spaces 2 and 3 become equal to each other and are in equilibrium.

As a result, the air pressures of the underfloor spaces 8 and 9 and the above-floor spaces 2 and 3 are always equally balanced regardless of the change in the amount of air blown out by the air conditioner 15, and the circulation of the conditioned air in the air conditioning system AS is always stable. It is done smoothly.

Further, in the above floor spaces 2 and 3, a plurality of ventilation devices 25 for ventilating the air in the floor spaces 2 and 3 are provided.

The ventilation device 25 is a conventionally known general ventilation device. Specifically, both the supply air that takes in outside air and the exhaust air that discharges dirty indoor air are provided as an air supply ventilation fan 26a and exhaust air, respectively. This is a first-class ventilation (air supply / exhaust type) system that is forcibly performed by the ventilation fan 26b. These ventilation devices 25, 25, ... Are driven regularly or at any time to ventilate the above-floor spaces 2, 3.

The air-conditioning system AS configured as described above is suitable for 24-hour air-conditioning, and during the heating operation, the warm air (warm air) blown from the air-conditioning device 15 passes through the underfloor spaces 8 and 9 and is described above. The air supply devices 16, 16, ... Are blown out to the above-floor spaces 2 and 3, and during the cooling operation, the cold air (cold air) blown out from the air-conditioning device 15 passes through the underfloor spaces 8 and 9 and is supplied. The air conditioners 16, 16, ... Are blown out and supplied to the above floor spaces 2 and 3.

Specifically, when the air conditioner 15 and the air supply devices 16, 16, ... Are driven, the air conditioner 15 sucks the air in the floor space 2 on the first floor from the air suction unit 15a and the air blowout unit 15b to the first floor. Air-conditioned air of hot air or cold air is blown out and supplied to the underfloor space 8. On the other hand, the air supply devices 16, 16, ... Suck the conditioned air of the underfloor space 8 and the underfloor space 9 on the second floor, and from the air supply ports 21, 21, ..., The above-floor space 2 on the first floor and the floor on the second floor. The space 3 is blown out to air-condition the above-floor spaces 2 and 3.

By the cooperative action of the air conditioner 15 and the air supply device 16, the air conditioning air (warm air, cold air) blown out from the air conditioner 15 is forcibly forced by the air supply devices 16, 16, ... On the first and second floors. It is sucked and flows smoothly through the underfloor space 8, and also flows through the underfloor space 9 on the second floor through the communication passage 17, and spreads throughout the underfloor spaces 8 and 9, and further, the air supply ports 21, 21, ... Is supplied to the living rooms 2a, 3a, ... Of the above-floor spaces 2 and 3.

In this case, the reaching height of the conditioned air blown out from each of the air supply ports 21 to the space 2 or 3 on the floor is not only light warm air but also heavy cold air, which is equal to or higher than the standard height H described above. .. Therefore, the conditioned air blown out to the maximum reached height is then diffused and spread over the entire floor spaces 2 and 3, effectively air-conditioning the floor spaces 2 and 3, and sufficient heating and cooling effects are exhibited. ..

The distribution of conditioned air to the entire above-floor spaces 2, 3 is not specifically shown, but the undercuts and garages provided on the doors of the partition walls that separate the living rooms 2a, 3a, ... Are conditioned air. As a passage, the flow of conditioned air to each room 2a, 3a, ..., Etc. is smoothly promoted. In addition, folding doors in closets, bran in closets, sliding doors, etc. have gaps on four sides, so ventilation is also possible from there.

As described above, according to the air-conditioning system AS of the present embodiment, the air-conditioned air (warm air, cold air) of the air-conditioning device 15 is taken into the underfloor space 8 of the first floor portion of the house 1 and is on the floor of the living rooms 2a, 3a, ... The air conditioner 15 is provided with an air suction unit 15a and an air outlet unit 15b to air-condition the spaces 2 and 3, and is configured to blow out hot air during heating operation and blow out cold air during cooling operation. .. Further, the underfloor space 8 is in the form of a highly airtight and highly insulated chamber that is shielded from the outside, and the intake port 20 that opens to the air blowing portion 15b of the air conditioner 15 and the floor surface 6a of the above floor spaces 2 and 3 , 7a is provided with air supply ports 21, 21, ..., And an air supply device 16 that blows out and supplies the conditioned air of the underfloor space 8 to the above-floor spaces 2, 3 to these air supply ports 21, 21, ... It is provided. As a result, during the heating operation, the warm air blown from the air conditioner 15 is blown out to the above-floor spaces 2 and 3 by the air supply devices 16, 16, ... Through the underfloor space 8, and during the cooling operation. The cold air blown out from the air conditioner 15 is blown out to the above-floor spaces 2 and 3 by the air supply devices 21, 21, ... Through the underfloor space 8, and is listed below. The unique effect is effectively exhibited, and the air-conditioning function can be fully exhibited without the need for duct piping.

(A) During the heating period, warm air generated by warm air blown from the air conditioner 15 into the underfloor space 8 in the form of a highly airtight and highly insulated chamber is supplied to the floor surfaces 6a and 7a of the above floor spaces 2 and 3. It is supplied to the living rooms 2a, 3a, etc., which are the above-floor spaces 2, 3 through the air openings 21, 21, ..., And during the cooling period, the cold air generated by the cold air blown from the air conditioner 15 into the underfloor space 8 is generated. Since it is configured to be supplied to the living rooms 2a, 3a, etc. via the air supply ports 21, 21, ..., There is no need for complicated duct piping, and construction is easy without skill. The installation cost of the air conditioner 15 is low, and the initial investment is low.

(B) The conditioned air of the underfloor space 8 is blown out to the floor spaces 2 and 3 from the underfloor space 8 to the air supply ports 21, 21, ... Opened to the floor surfaces 6a and 7a of the floor spaces 2 and 3. Since the air supply device 16 is provided, the conditioned air (hot air, cold air) blown out from the air conditioner 15 can be generated even if the underfloor space 8 has a rising portion of the foundation concrete that resists the flow of air. The suction force of the air supply device 16 smoothly flows through the underfloor space 8 and the underfloor space 9 on the second floor without staying in the vicinity of the air conditioner 15, and spreads over the entire underfloor spaces 8 and 9. The air supply ports 21, 21, ... Are blown out to each living room to effectively exert the heating and cooling effects.

In particular, even for cooling that has been difficult or impossible to put into practical use in the past, cold air rises from the air supply ports 21, 21, ... To the above-floor spaces 2, 3 due to the blowing force of the air supply devices 16, 16, ... As a result, the cold air is evenly diffused in the living rooms 2a and 3a without stagnation on the floor surfaces 6a and 7a of the floor spaces 2 and 3, and the cooling effect is effectively exerted throughout the living rooms 2a and 3a. Will be done.

Further, even during the cooling operation, due to the blowing force of the air supply devices 16, 16, ..., The cold air flows smoothly in the underfloor spaces 8 and 9 without stagnation, and dew condensation is unlikely to occur in the underfloor spaces 8 and 9. There is no risk of mold.

Furthermore, since the conditioned air is distributed throughout the underfloor spaces 2, 3 and 4, small spaces such as toilets 5b, dressing room / washroom 5c, and bathroom 5d other than the living rooms 2a, 3a, ... Air conditioning (heating / cooling) is performed on the floor, and the entire floor space 2 and 3 can enjoy a uniform and comfortable heating / cooling effect with a small temperature difference. As a result, the resident does not feel uncomfortable every time he / she moves as in the conventional case, and the thermal efficiency is good. In particular, there is less risk of heat shock for the elderly during the heating period, which has been a problem in the past.

Embodiment 2
This embodiment is shown in FIG. 8, and the configuration of the air conditioning system AS in the first embodiment is modified.

That is, the air-conditioning system AS of the present embodiment has a configuration in which the air-conditioning device 30 is arranged on the second floor in addition to the air-conditioning device 15 on the first floor.

The air conditioner 30 has the same basic configuration as the air conditioner on the first floor, that is, the air conditioner 15 of the first embodiment.

That is, the air conditioner 30 is in the form of an indoor unit of a heat pump type air conditioner connected to an outdoor unit (not shown) installed outdoors, and is a boundary between the above-floor space 3 and the underfloor space 9 on the second floor. It is installed on the floor portion 7 so that the air in the above-floor space 3 is sucked from the air suction portion 30a and the air-conditioned air of hot air or cold air is blown out from the air blowing portion 30b to the underfloor space 9.

As described above, the air-conditioning capacity of the air conditioner is such that the equipment suitable for the house 1 is selected and set based on the actual operation test, and the air-conditioning capacity of the general commercial home air conditioner at the time of the present application is It has been found that the smaller the rated heating / cooling capacity, the greater the heating / cooling effect.

Therefore, as in the present embodiment, when two indoor units of air conditioners are adopted as the air conditioners 15 and 30, and the floor spaces 2 and 3 having the same indoor capacity as those of the first embodiment are air-conditioned throughout the building, the first embodiment As a result, it is possible to reduce the power consumption by increasing the cooling and heating efficiency by using two air conditioners having a smaller rated heating and cooling capacity than this air conditioner, rather than using one air conditioner.

Specifically, an air conditioner that complements the total heat loss calculated from the outer wall 11, roof portion 12, window 13, or ceiling of the house 1, and the total heat loss per flow through the foundation concrete portion or the first floor floor surface. In contrast to the cooling / heating capacity of the air conditioner of the first embodiment, in the present embodiment, the air conditioners having the rated heating / cooling capacity of 0.5 to 0.6 of the rated heating / cooling capacity of the air conditioner of the first embodiment are provided on the first floor and the second floor. It is installed on the floors 6 and 7.

In connection with this, the underfloor space 9 on the second floor is in the form of a highly airtight and highly insulated chamber that is shielded from the outside like the underfloor space 8 on the first floor, and the underfloor space 8 on the first floor is described above. It has a sealed space structure that is independent of each other.

That is, the underfloor space 8 on the first floor has an intake port 20 that connects to and opens to the air outlet portion 15b of the air conditioner 15, and an air supply port 21 that opens to the floor surface 6a of the floor portion 6 of the floor space 2 on the first floor. On the other hand, the underfloor space 9 on the second floor is provided with an intake port 35 that connects to the air outlet portion 30b of the air conditioner 30 and a supply that opens to the floor surface 7a of the floor portion 7 of the above floor space 3. It is equipped with air openings 21, 21, ... Further, unlike the case of the first embodiment, the communication passage 17 for connecting the two underfloor spaces 8 and 9 and the communication port 18 for communicating the underfloor space 9 and the above-floor space 2 on the first floor are not provided.

Therefore, in the house 1 which is the form of the two-story house of the present embodiment, each floor of the first floor and the second floor has the same configuration as the air conditioning system AS in the first embodiment, and during the heating operation. Warm air blown from the air conditioner 15 on the first floor and the air conditioner 30 on the second floor passes through the underfloor space 8 on the first floor and the underfloor space 9 on the second floor, respectively, and is provided by the air supply devices 16, 16, ... In addition to being blown out to the above-floor space 2 and the above-floor space 3 on the second floor, the cold air blown out from both the air conditioners 15 and 30 is supplied to the air through the underfloor spaces 8 and 9, respectively. The devices 16, 16, ... Are blown out and supplied to the floor space 2 on the first floor and the floor space 3 on the second floor.
Other configurations and operations are the same as in the first embodiment.

Embodiment 3
This embodiment is shown in FIGS. 9 to 11, and the configuration of the air conditioning system AS in the first embodiment is modified.

That is, in the air conditioning system AS of the present embodiment, an underfloor ventilation device 40 that ventilates the above-floor spaces 2 and 3 is adopted instead of the general ventilation device 25 in the first embodiment.

The underfloor ventilation device 40 is installed in the underfloor space 8 on the first floor, and is equipped with a blower (not shown) to suck in the air of the above-floor spaces 2 and 3 and exhaust it to the outside, and also suck in the outside air to take in the outside air to the underfloor space. It is configured to blow out to 8.

Further, the underfloor ventilation device 40 is provided with a heat exchange unit 41 inside, and is configured to exchange heat between the air in the above-floor spaces 2 and 3 to be exhausted to the outside and the outside air blown out to the underfloor space 8. ing.

Specifically, the underfloor ventilation device 40 includes an inside air suction section 42, an exhaust section 43, an outside air suction section 44, and an air supply section 45, and opens on the floor surfaces 6a and 7a of the above-floor spaces 2 and 3 on the first floor. Through the exhaust ducts 47, 47, ... Connected to the exhaust ports 46, 46, ..., The air in the above-floor spaces 2 and 3 is sucked in and exhausted to the outside, and the outside air is sucked in to the underfloor spaces 8 and 9 without ducts. It is said that it blows out with.

In the underfloor ventilation device 40 of the illustrated embodiment, the inside air suction portion 42 is connected to the branch chamber 51 via the exhaust duct 50, and the plurality of exhaust ducts 47, 47, ... Are branched and connected to the branch chamber 51. The tips of the exhaust ducts 47, 47, ... Are connected to a plurality of the exhaust ports 46, 46, ... Opening to the floor surfaces 6a, 7a of the floor spaces 2, 3 respectively. Further, the inside air suction unit 42 and the exhaust unit 43 are connected via the heat exchange unit 41, and the exhaust unit 43 is connected to an inside air exhaust port 55 provided in the foundation concrete 10 via an exhaust duct 54. Has been done.

On the other hand, the outside air suction portion 44 is connected to the outside air suction port 57 provided in the foundation concrete 10 via the air supply duct 56. Further, the outside air suction unit 44 and the air supply unit 45 are connected via the heat exchange unit 41, and the air supply unit 45 is opened in the underfloor space 8 via the air supply passage 58.

That is, in the underfloor ventilation device 40 of the present embodiment, since the air supply path has a ductless configuration without duct piping, fresh air taken in from the outside is directly supplied to the underfloor space 8 through a filter. ..

The location where the inside air exhaust port 55 is installed is set so that the conditioned air blown out from the air supply device 16 and the indoor air sucked and exhausted from the inside air exhaust port 55 do not directly buffer each other. In the illustrated embodiment, as shown in FIGS. 10 and 11, the air supply devices 16 are set apart from the air supply ports 21, 21, ... At the corners of the living rooms 2a, 3a, ... It is configured so that the supplied conditioned air (warm air, cold air) is not directly sucked in.

Further, the specific number of exhaust ports 46 installed in each of the living rooms 2a and 3a is wide for the purpose of sufficiently effectively and efficiently exerting the air exhaust function in the above-floor spaces 2 and 3 in each of the living rooms 2a and 2b. It is set according to the air and structure.

Then, by driving the underfloor ventilation device 40, the exhaust ports 46, 46, ... Opening to the floor surfaces 6a, 7a of the above-floor spaces 2, 3 through the exhaust ducts 47, 47, ..., The underfloor through the branch chamber 51. The indoor air exhausted to the ventilation device 40 is exhausted from the exhaust unit 43 to the outside of the house 1 from the inside air exhaust port 55 via the exhaust duct 54. On the other hand, the fresh outside air sucked from the outside air suction port 57 into the outside air suction unit 44 of the underfloor ventilation device 40 is blown out from the air supply unit 45 to the underfloor space 8 via the air supply pipe 58, and is supplied to the underfloor space 8 through the underfloor space 8. It is mixed with the conditioned air from the air conditioner 15. The conditioned air mixed with the fresh outside air is supplied to the underfloor space 9 on the second floor through the connecting passage 17, and the ventilation in the house 1, that is, the ventilation of the above-floor spaces 2, 3 and the underfloor spaces 8 and 9 is performed. Will be done.

As described above, the underfloor ventilation device 40 includes a heat exchange unit 41, and the indoor air flowing from the inside air suction unit 42 to the exhaust unit 43 and the outside air flowing from the outside air suction unit 44 to the air supply unit 45. Is heat exchanged with each other as it flows through the heat exchange unit 41.

The heat exchange unit 41 has a configuration in which the heat exchange operation can be selectively switched between the case where the heat exchange operation is performed and the case where the heat exchange operation is not performed, and for example, the temperature between the ventilated indoor air and the outside air. If the difference is large and the temperature of the outside air is significantly different from the temperature of the temperature-controlled indoor air, heat exchange operation is performed to transfer the temperature of the indoor air to the outside air and the outside air to the temperature of the indoor air. On the other hand, if the temperature difference is small and the temperature of the outside air is close to the temperature-controlled indoor air, the heat exchange operation does not occur.

Then, in the air-conditioning system AS configured as described above, during the heating operation, the warm air blown from the air-conditioning device 15 passes through the underfloor spaces 8 and 9, and is described by the air supply devices 16, 16, ... In addition to being blown out to the above-floor spaces 2 and 3, during the cooling operation, the cold air blown out from the air conditioner 15 passes through the underfloor spaces 8 and 9 and is supplied by the air supply devices 16 and 16 ... It is blown out and supplied to 3. Further, during the heating operation and the cooling operation, the indoor air of the above-floor spaces 2 and 3 is exhausted to the outside of the house 1 by the underfloor ventilation device 40, and the fresh outside air taken in from the outside of the house 1 is released. After being mixed with the air conditioning air in the underfloor space 8, it is also supplied to the underfloor space 9 on the second floor via the communication passage 17, and the above-floor spaces 2 and 3 and the underfloor spaces 8 and 9 are ventilated.

Specifically, when the air conditioner 15 and the air supply devices 16, 16, ... Are driven, the air conditioner 15 provides conditioned air (warm air, cold air) to the underfloor space 8 on the first floor as described in detail in the first embodiment. In addition to supplying air, the air supply devices 16, 16, ... Suck in the conditioned air of the underfloor space 8 and the underfloor space 9 on the second floor, and blow out and supply the air-conditioned air to the floor space 2 on the first floor and the floor space 3 on the second floor. , Air-condition the floor spaces 2 and 3.

At this time, when the underfloor ventilation device 40 is driven, the underfloor ventilation device 40 exhausts the indoor air of the above-floor spaces 2 and 3 to the outside of the house 1 and takes in fresh outside air from the outside of the house 1 to take in the fresh outside air. It blows out and supplies to space 8. In this case, the heat exchange unit 41 exchanges heat between the indoor air to be exhausted and the outside air to be taken in as necessary.

The fresh outside air supplied to the underfloor space 8 is mixed with the conditioned air supplied from the temperature control device 15, and the conditioned air mixed with the outside air is further under the floor on the second floor via the communication passage 17. It is also supplied to space 9. Then, the conditioned air mixed and ventilated with the fresh outside air is blown out to the above-floor spaces 2 and 3 by the air supply devices 16, 16, ..., And the underfloor spaces 8 and 9 and the above-floor space 2 are supplied. The temperature control and ventilation of 3 are performed at the same time.

In this case, the mechanism of mixing the conditioned air from the temperature control device 15 and the fresh outside air from the underfloor ventilation device 40 in the underfloor space 9 is such that the conditioned air and the outside air are particularly applied to the floor portion 6 on the first floor. Due to the forced suction action of the air supply devices 16, 16, ... Arranged in a scattered manner, the air flows smoothly through the underfloor space 8 and spreads over the entire underfloor space 8. Mixing with the outside air is also uniform and sufficient.

Regarding the distribution of conditioned air to the entire above-floor spaces 2, 3 as described in the first embodiment, the undercuts and garages provided on the doors of the partition walls that separate the living rooms 2a, 3a, ... Are air-conditioned. It serves as an air passage, and the flow of conditioned air to each room 2a, 3a, ..., Etc. is smoothly promoted. In addition, folding doors in closets, bran in closets, sliding doors, etc. have gaps on four sides, so ventilation is also possible from there.
Other configurations and operations are the same as in the first embodiment.

Embodiment 4
This embodiment is shown in FIG. 12, and the configuration of the air conditioning system AS in the second embodiment is modified.

That is, in the air conditioning system AS of the present embodiment, an underfloor ventilation device 40 that ventilates the above-floor spaces 2, 3 and the like is adopted instead of the general ventilation device 25 in the second embodiment.

The underfloor ventilation device 40 of the present embodiment is the same as that of the third embodiment, and is installed in the underfloor space 8 on the first floor, sucks in the air of the above-floor spaces 2 and 3 and exhausts it to the outside, and is not drawn. It is configured to suck in outside air and blow it out into the underfloor space 8.

Further, with the adoption of the underfloor ventilation device 40, the underfloor space 9 on the second floor has a structure that communicates with the underfloor space 8 on the first floor.

That is, the underfloor space 9 on the second floor has an intake port 35 that opens to the air blowing portion 30b of the air conditioner 30, and air supply ports 21, 21, ... That open to the floor surface 7a of the floor portion 7 of the above floor space 3. And is connected to the underfloor space 8 on the first floor via a communication passage 17.

Therefore, in the underfloor air-conditioning system AS configured as described above, during the heating operation, the warm air blown from the air-conditioning device 15 on the first floor and the air-conditioning device 30 on the second floor is emitted from the underfloor spaces 8 and 2 on the first floor, respectively. Through the underfloor space 9 on the floor, the air supply devices 16, 16, ... Are blown out to the above-floor space 2 on the first floor and the above-floor space 3 on the second floor, and at the time of cooling operation, the same air conditioners 15 and 30 are used. The cold air blown out is blown out and supplied to the above-floor space 2 on the first floor and the above-floor space 3 on the second floor by the air conditioners 16, 16, ... Through the underfloor spaces 8 and 9, respectively.

Further, during the heating operation and the cooling operation, the indoor air of the above-floor spaces 2 and 3 is exhausted to the outside of the house 1 by the underfloor ventilation device 40, and the fresh outside air taken in from the outside of the house 1 is released. After being mixed with the air conditioning air in the underfloor space 8, it is also supplied to the underfloor space 9 on the second floor via the communication passage 17, and the above-floor spaces 2 and 3 and the underfloor spaces 8 and 9 are ventilated at the same time.
Other configurations and operations are the same as in the second embodiment.

Embodiment 5
This embodiment is shown in FIG. 13, and the arrangement configuration of the air conditioner 15 of the air conditioner system AS in the first embodiment is modified.

That is, the air conditioner 15 of the present embodiment has the same form as the wall-mounted indoor unit of the first embodiment, and is arranged on the floor surface 6a of the floor portion 6 of the floor space 2. Specifically, the air conditioner 15 is arranged on the floor surface 6a of the floor portion 6 in contact with the floor surface 6a or at a predetermined interval.

In the illustrated embodiment, as shown in FIG. 13A, the air conditioner 15 is arranged on the floor surface 6a of the floor portion 6 at a predetermined interval by a positioning support (not shown), and the floor is described above. The floor material 29 of the portion 6 is provided with an opening 20 corresponding to the air blowing portion 15b of the air conditioner 15.

The opening 20 of the floor portion 6 is set to a size corresponding to the air blowing portion 15b of the air conditioner 15, and the space above the floor 2 and the space 8 below the floor are between the opening 20 and the air conditioner 15. In order to maintain the airtightness between them, the air conditioner 15 is sealed by a sealing member 33 over the entire outer circumference. As a result, the opening 20 forms an intake port that opens into the air blowing portion 15b of the air conditioner 15 in the underfloor space 8.

As a result, the air suction portion 15a of the air conditioner 15 is arranged so as to face the above-floor space 2, and the air outlet portion 15b is arranged so as to face the underfloor space 8. Reference numeral 31 denotes a louver for adjusting the wind direction provided in the air blowing portion 15b.

According to the air conditioner system AS configured as described above, the air conditioner 15 can be installed regardless of the shape and size of the air conditioner 15, especially when a recent high-performance air conditioner is applied to the air conditioner 15. It is valid.

That is, in the structure of the boundary between the above-floor space 2 and the underfloor space 8 where the air conditioner 15 is installed, that is, the floor portion 6 on the first floor, a base "27 is laid on the foundation concrete 10, and a large pull 28 is laid on this base 27. , 28, ... Are connected and fixed at predetermined intervals (usually 910 mm), and a floor material 29 is stretched on these large pulls 28, 28, ....

Therefore, when the air conditioner 15 is installed so as to face the underfloor space 8 as in the first embodiment, that is, the air conditioner 15 is vertically penetrated through the floor portion 6 as in the first embodiment. In the case of installation in (see FIG. 4), the width dimension of the air conditioner 15 is smaller than the distance between the large pulls 28 and 28, and more strictly, the width dimension is limited to the width dimension that can secure the maintenance space of the air conditioner 15. Will be done.

However, in recent years, in order to increase the capacity of the air conditioner, the size of the heat exchanger in the air conditioner 15 which is an indoor unit has been increased, and the width dimension of the air conditioner 15 has inevitably increased. Does not fit in. Therefore, it is difficult or impossible for the air conditioner 15 of such a high-performance air conditioner to adopt the installation configuration as in the first embodiment.

On the other hand, in the installation configuration arranged on the floor surface 6a of the floor portion 6 as in the present embodiment, it can be adopted regardless of the size of the air conditioner 15 without being restricted by the structure of the floor portion 6 at all. Is.

Further, in the installation configuration in which the air conditioner 15 is arranged on the floor surface 6a of the floor portion 6 in this way, the effects listed below can be obtained.

(1) It is possible to reduce the size of the opening 20 for the air conditioner 15 provided in the floor material 29 of the floor portion 6 as much as possible.

That is, when a part of the air conditioner 15 faces the underfloor space 8 or all of the air conditioner 15 is arranged in the above-floor space as in the first embodiment, the opening 20 for the air conditioner 15 is shown in FIG. As shown, it must be formed larger than the plane area of the air conditioner 15, but in the present embodiment, the opening 20 may be set to a size corresponding to the air blowing portion 15b of the air conditioner 15. Therefore, it is smaller than the bottom area of the air conditioner 15, and is externally covered with the air conditioner 15 and is not exposed in the living room 2a, so that the aesthetic appearance in the living room 2a is not spoiled.

(2) Regardless of the thickness of the heat insulating material 32 inside the foundation concrete 10, the air conditioner 15 can be installed close to the interior wall of the living room 2a of the floor space 2.

That is, in the underfloor air conditioning system, in order to secure the heat insulating property of the underfloor space 8, the heat insulating material 29 is attached to the inside of the foundation concrete 10 as shown in FIG. 13A. When a part of the air conditioner 15 is installed in the underfloor space 8 as described above, the air conditioner 15 must be installed inside the foundation concrete 10 by the thickness of the heat insulating material 29 of the foundation concrete 10. As a result, the air conditioner 15 protruding from the floor surface 6a to the living room 2a of the floor space 2 must be installed at a distance of the thickness of the heat insulating material 29 from the interior wall of the living room 2a, which is inside the living room 2a. The decorative design of the air conditioner 15 is impaired, and the occupied area of the air conditioner 15 on the floor surface 6a is increased.

In the present embodiment, as shown in FIG. 13, since all of the air conditioner 15 is arranged on the floor surface 6a of the floor portion 6, the structure of the underfloor space 8 is not subject to any positional restrictions. The occupied area of the floor surface 6a of the decorative design air conditioner 15 of the living room 2a of the floor space 2 as described above is not unnecessarily increased.

(3) It is easy to maintain airtightness between the air conditioner 15 and the floor material 29 of the floor portion 6.

In the underfloor air conditioning system, the air is sucked from the air suction portion 15a of the air conditioner 15 from the above floor space 2, while the air conditioning air is blown out from the air blowing portion 15b toward the underfloor space 8. Therefore, in order to prevent the blown air from the air blowing portion 15b of the air conditioner 15 from being directly sucked into the suction portion 15a, the entire outer circumference of the air conditioner 15 is between the air blowing portion 15b and the air suction portion 15a. It is necessary to maintain airtightness by the sealing member 33 over the circumference.

In this case, when a part of the air conditioner 15 is installed in the underfloor space 8 as in the first embodiment, as shown in FIG. 4A, the contour shape of the sealed portion by the seal member 33 is complicated and airtight. Although the construction is not easy, when the air conditioner 15 is installed on the floor surface 6a as in the present embodiment, the contour shape of the sealed portion by the seal member 33 is simple as shown in FIG. 13A. Alternatively, although not shown, an elastic foam such as polyurethane may be simply laid around the bottom of the air conditioner 15 as a sealing member, and airtight construction or airtight treatment of this portion is easy.

(4) The front cover 15c of the air conditioner 15 can be freely opened and closed, and maintenance inside the machine is easy.

When the air conditioner 15 is a commercially available indoor unit of a wall-mounted air conditioner, the cover 15c of the air conditioner 15 has a structure that can be opened and closed for maintenance of the heat exchanger in the machine. When a part of the air conditioner 15 is installed in the underfloor space 8 as in the first embodiment, as shown in FIG. 4A, the shape and dimensions of the opening 20 of the floor portion 6 are devised to cover the cover 15c. However, when the air conditioner 15 is installed on the floor surface 6a as in the present embodiment, the cover 15c of the air conditioner 15 is free as shown in FIG. 13A. It can be opened and closed.
Other configurations and operations are the same as in the first embodiment.

It should be noted that the above-described embodiments 1 to 5 merely show preferred embodiments of the present invention, and the present invention is not limited to these, and various design changes can be made within the range, for example. The following modifications are possible.

For example, in the illustrated embodiments 1 to 5, the air conditioning system AS of the present invention is adopted for the two-story house 1, but if the house 1 has the underfloor space 8, it is a one-story (one-story). The air-conditioning system AS of the present invention can be similarly applied to a house having three or more floors.

Further, in the illustrated embodiments 1 to 5, the air supply device 16 has a unit structure integrally formed with the air supply ports 21 of the underfloor spaces 8 and 9, but the specific structure is shown in the illustrated embodiment. Not limited to the form, the above-mentioned (a) the function of ensuring a sufficient supply of conditioned air to each of the above-floor spaces 2 and 3 and (b) the smooth distribution of conditioned air in the underfloor space 8 on the first floor. Various designs can be changed as long as it has a configuration that has two major functions, one for ensuring the above.

AS Air Conditioning System 1 House 2 1st Floor Floor Space 2a 1st Floor Living Room 3 2nd Floor Floor Space 3a 2nd Floor Living Room 4 1st Floor to 2nd Floor Penetration Space 6 1st Floor Floor 6a 1st Floor Floor 7 2nd floor floor 7a 2nd floor floor 8 1st floor underfloor space 9 2nd floor underfloor space 10 Foundation 11 Outer wall 12 Roof 13 Window 15 Air conditioner 15a Air suction part of air conditioner 15b Air outlet part of air conditioner 16 Air supply device 17 Communication passage 18 Communication port 20 Intake port in underfloor space 21 Air supply port (= opening of air supply gallery)
21a Outlet opening 21b Communication port 22 Air supply gallery 22a Air supply gallery outlet 22b Air supply gallery communication port 23 Air supply fan 23a Air supply fan suction port 23b Air supply fan outlet 25 Ventilation device 26a Air supply ventilation fan 26b Ventilation fan for exhaust 30 Air conditioner 30a Air suction part of air conditioner 30b Air blowout part of air conditioner 35 Intake port of underfloor space 40 Underfloor ventilation device 41 Heat exchange part 42 Inside air suction part 43 Exhaust part 44 Outside air suction part 45 Air supply part 46 Exhaust ports 47, 50, 54 Exhaust duct 51 Branch chamber 55 Inside air exhaust port 56 Air supply duct 57 Outside air intake port

Claims (16)

It is an air conditioning system that takes in warm and cold air, which is the air conditioning air of an air conditioner, into the underfloor space of a house to air-condition the space above the floor of a living room, etc.
The air conditioner is provided with an air suction unit and an air outlet unit, and is configured to blow out hot air during heating operation and blow out cold air during cooling operation.
The underfloor space is in the form of a highly airtight and highly insulated chamber that is shielded from the outside, and includes an air intake port that opens to the air outlet portion of the air conditioner and an air supply port that opens to the floor surface of the above floor space.
The air supply port is provided with an air supply device that blows out the air in the underfloor space to the above-floor space.
During the heating operation, the warm air blown from the air conditioner is blown out to the above-floor space by the air supply device via the underfloor space, and during the cooling operation, the cold air blown from the air conditioner is blown into the underfloor space. An air conditioner system characterized in that it is configured to be blown out and supplied to the space above the floor by the air supply device. The air conditioner is in the form of an indoor unit of a heat pump type air conditioner connected to an outdoor unit installed outdoors, and is installed at a boundary between an above-floor space and an underfloor space, and is described from the air suction portion. The air-conditioning system according to claim 1, wherein the air-conditioning system is configured to suck in the air in the space above the floor and blow out the conditioned air from the air-blowing portion to the space under the floor. The air conditioner system according to claim 2, wherein the air conditioner is in the form of a wall-mounted indoor unit, and a part of the air conditioner faces the underfloor space or all of the air conditioner is arranged in the above-floor space. .. The air conditioner system according to claim 2, wherein the air conditioner is in the form of a wall-mounted indoor unit and is arranged on the floor surface of the floor space. The air conditioner according to claim 1, wherein the blown air volume of the air supply device is set so that the maximum reaching height of the air blown and supplied from the air supply port is equal to or higher than the reference height. system. The air conditioning system according to claim 5, wherein the reference height is a height at which the air blown out from the air supply port to the floor space is diffused over the entire floor space. The air conditioning system according to claim 6, wherein the reference height is set to 1.0 m to 2.5 m. The air supply device includes an air supply gallery that forms the air supply port and an air supply fan that is integrally provided in the air supply gallery.
The air conditioning system according to claim 1, wherein the air supply fan has a suction port that opens in the underfloor space and an outlet that is integrally connected to and opens in the opening of the air supply gallery. The air conditioning according to claim 8, wherein the opening of the air supply garage is composed of an outlet to which the air supply fan is connected and an opening, and a communication port for communicating the underfloor space and the above-floor space. system. The air conditioning system according to claim 8, wherein at least one air supply device is installed on the same floor surface in each living room in the above floor space. The tenth aspect of the present invention is characterized in that the total amount of air blown from the air supply device installed in the space above the floor is set to be larger than the amount of air blown from the air conditioner into the space under the floor. Described air conditioning system. In a house in the form of a two-story house
An air conditioning system, wherein each of the first floor and the second floor has the configuration according to any one of claims 1 to 11. A ventilation device for ventilating the above-floor space is installed in the underfloor space.
This ventilation device sucks in the air in the space above the floor and exhausts it to the outside, and also sucks in fresh outside air and blows it out into the space under the floor.
The claim is characterized in that the fresh outside air blown out to the underfloor space is mixed with the conditioned air blown out from the air conditioner, and the mixed conditioned air is blown out to the above-floor space. Item 1. The air conditioning system according to item 1. The ventilation device sucks in the air in the above-floor space and exhausts it to the outside by an exhaust duct connected to an exhaust port opening to the floor surface of the above-floor space, and also sucks in fresh outside air and ductlessly into the underfloor space. The air conditioning system according to claim 13, wherein the air conditioning system is configured to blow out. The air conditioning system according to claim 13, wherein the ventilation device includes a heat exchange unit that exchanges heat between the air in the space above the floor to be exhausted to the outside and the outside air blown out to the space under the floor. A house comprising the air conditioning system according to any one of claims 1 to 15.

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