Air conditioning system and air conditioning method

Abstract

To provide an air conditioning system which can adjust a temperature in an entire house to a uniform temperature with a simple structure.SOLUTION: An air conditioning system 1 includes an air conditioner 2 which heats air which is introduced through a first air inlet 46 or a second air inlet 55 into a housing 10 with a heating function or cools the air with a cooling function to supply the air to the interior of the housing 10. When the heating function is operated, the first air inlet 46 is disposed near a lowermost part in a heat insulation section 18 in the housing 10 or near a finishing part disposed at a lowermost part of a living space or a non-living space. When the cooling function is operated, the second air inlet 55 is disposed near an uppermost part in the heat insulation section 18 in the housing 10 or near a finishing part disposed at an uppermost part of the living space or the non-living space.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an air conditioning system. [Background technology]

[0002] Conventionally, in an air conditioning system equipped with an air conditioner having both heating and cooling functions, a single air conditioner is known that heats the first and second floors of a detached house using the heating function, or cools the first and second floors using the cooling function (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-325569 Summary of the Invention [Problem to be solved by the invention]

[0004] When one air conditioner is used to heat the first and second floors of a detached house in winter, the temperature at the feet on the first floor does not rise easily and the heating function does not work well. Also, when one air conditioner is used to cool the first and second floors of a detached house in summer, the temperature on the second floor does not fall easily and the cooling function does not work well. On the other hand, if the heating or cooling capacity of the air conditioning unit is increased to increase the airflow in order to effectively air-condition the first and second floors of a house, this requires expensive and complex control, which in turn leads to a larger air conditioning unit and a more costly system. Therefore, there is a demand for a simple structure that can adjust the temperature throughout the house to a uniform temperature.

[0005] An object of the present invention is to provide an air conditioning system capable of adjusting the air temperature throughout a house to a uniform temperature with a simple configuration. [Means for solving the problem]

[0006] The present invention relates to an air conditioning system (e.g., air conditioning system 1 described below) equipped with an air conditioner (e.g., air conditioner 2 described below) that heats air inside a house (e.g., house 10 described below) using a heating function or cools it using a cooling function, and supplies the air inside the house, the air being introduced through a first air intake (e.g., first floor circulation fan intake 46 described below) or a second air intake (e.g., second floor circulation fan intake 55 described below), and the air being supplied to the house, wherein, when the heating function is operated, the first air intake is located near the bottom of an insulated section inside the house, or near a finishing section located at the bottom of a living space or non-living space, and, when the cooling function is operated, the second air intake is located near the top of an insulated section inside the house, or near a finishing section located at the top of a living space or non-living space.

[0007] In addition, when the heating function is operated, it is preferable that the first air intake is located near the bottom of the lowest floor or near the bottom of each floor if the house is multi-story, or near the bottom if the house is a single-story, and the second air intake is located near the top of the top floor or near the top of each floor if the house is multi-story, or near the top if the house is a single-story, when the cooling function is operated.

[0008] Moreover, it is preferable that the first air intake port is disposed under the floor (for example, underfloor space 114 described below), and the second air intake port is disposed in the attic (for example, attic space 125 described below).

[0009] Furthermore, it is preferable that the air conditioner has both the heating function and the cooling function and is equipped with a switching unit (e.g., switching unit 8 described below) that can switch so that the air introduced into the air conditioner is introduced through either the first air intake or the second air intake.

[0010] It is also preferable that the house further includes a ventilation device (for example, ventilation device 3 described below) that introduces air from outside the house into the house and exhausts air from inside the house to the outside, and the ventilation device introduces air from outside the house into the air conditioning device, and the air conditioning device warms the outside air introduced by the ventilation device using a heating function or cools it using a cooling function and supplies it into the house.

[0011] The present invention also relates to an air conditioning system equipped with an air conditioner that heats air inside a house that is introduced through a first air intake or a second air intake using a heating function or cools it using a cooling function and supplies it inside the house, wherein when the heating function is functioning, the first air intake is located near the northernmost part of the house, and when the cooling function is functioning, the second air intake is located near the southernmost part of the house.

[0012] The air conditioning maintenance structure further includes an air conditioning maintenance structure (e.g., the air conditioning maintenance structure 9, the first floor air conditioning maintenance structure 91, and the second floor air conditioning maintenance structure 92 described later) for performing maintenance on the air conditioning system. The air conditioning maintenance structure includes an intake airtight space (e.g., the first floor intake airtight space 911 and the second floor intake airtight space 921 described later) that is provided in a space where a duct can be arranged (e.g., the first floor piping space 131 and the second floor piping space 133 described later) and has airtightness, and a maintenance duct that is connected to the intake airtight space with one side open in the intake airtight space and is connected directly or indirectly to the air conditioning device on the other side. It is preferable that the maintenance duct be provided with a duct (e.g., a first floor side circulation intake duct L31, a second floor side circulation intake duct L32 described below), an air intake port arranged to connect the intake airtight space with the space within the house, a filter (e.g., a first floor side filter 912, a second floor side filter 922 described below) arranged inside the intake airtight space so as to cover the opening at the end side of the maintenance duct on the intake airtight space side, and a maintenance door (e.g., a first floor side maintenance door 913, a second floor side maintenance door 923 described below) configured to be able to open and close the intake airtight space and arranged in a position where maintenance of the filter can be performed. Effect of the Invention

[0013] According to the present invention, it is possible to provide an air conditioning system capable of adjusting the air temperature throughout a house to a uniform temperature with a simple configuration. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing a state during heating in a house equipped with an air conditioning system according to a first embodiment of the present invention. [Diagram 2] FIG. 1 is a diagram showing a state during cooling in a house equipped with an air conditioning system according to a first embodiment of the present invention. [Diagram 3] FIG. 11 is a diagram showing states during heating and cooling in a house equipped with an air conditioning system according to a second embodiment of the present invention. [Figure 4] 11A and 11B are diagrams illustrating states during heating and cooling in a house equipped with an air conditioning system according to a third embodiment of the present invention. [Diagram 5] FIG. 13 is a diagram showing states during heating and cooling in a house equipped with an air conditioning system according to a fourth embodiment of the present invention. [Figure 6] FIG. 13 is a diagram showing states during heating and cooling in a house equipped with an air conditioning system according to a fifth embodiment of the present invention. [Figure 7] FIG. 13 is a diagram showing a house equipped with an air conditioning system according to a sixth embodiment of the present invention, in which an air conditioner, a ventilator, and a switching unit are integrated into an air conditioning unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] First Embodiment Hereinafter, a first embodiment of the air conditioning system 1 of the present invention will be described with reference to the drawings. Fig. 1 is a diagram showing a state during heating in a house 10 equipped with the air conditioning system 1 according to the first embodiment of the present invention. Fig. 2 is a diagram showing a state during cooling in a house 10 equipped with the air conditioning system 1 according to the first embodiment of the present invention.

[0016] As shown in Figs. 1 and 2, the air conditioning system 1 of the first embodiment is used in, for example, a two-story house 10. The house 10 is configured with a highly airtight and highly insulated structure. The air conditioning system 1 can be used in a highly airtight and highly insulated house 10, thereby saving power. Note that, in this embodiment, the air conditioning system 1 is used in a two-story house 10 as an example, but is not limited thereto. The air conditioning system may also be used in, for example, a house with three or more stories.

[0017] As shown in Figs. 1 and 2, the house 10 is, for example, a two-story structure having a roof 13 and an exterior wall 14. The house 10 is configured such that insulation material for basic insulation is arranged under the roof 13 and inside the exterior wall 14, and the house 10 is configured to have basic insulation throughout. The insulated section 18 of the house 10 includes a roof side insulation line 181 and an exterior wall side insulation line 182. The roof side insulation line 181 is made of insulation material arranged on the underside of the roof 13 at an angle along the inclination direction of the roof 13. The exterior wall side insulation line 182 is made of insulation material arranged on the inside of the exterior wall 14 and extending in the vertical direction from the roof 13 to the ground 101. The house 10 is insulated inside the insulation section 18.

[0018] For example, house 10 has, on the first floor, a first floor bathroom space 111, a first floor corridor space 112, a first floor living space 113, and an underfloor space 114, and on the second floor, a second floor storage space 121, a second floor first living space 122, a second floor corridor space 123, a second floor second living space 124, and an attic space 125.

[0019] On the first floor, the first floor bathroom space 111, the first floor corridor space 112, and the first floor living space 113 are arranged in this order from one side to the other in the left-right direction (from left to right in Figs. 1 and 2). Each space 111, 112, 113 is formed by being surrounded by a floor, walls, and a ceiling. On the first floor, an underfloor space 114 is provided below the floor 16 of each space 111, 112, 113. The underfloor space 114 is located inside the exterior wall insulation line 182 of the house 10 and is insulated.

[0020] On the first floor, a first floor piping space 131 is provided between the other side wall surface 111a of the first floor bathroom space 111 and one side wall surface 112a of the first floor corridor space 112. In addition, between the first and second floors, between the ceilings of the spaces 111, 112, 113 on the first floor and the floors 17 of the spaces 121, 122, 123, 124 on the second floor, a first floor upper piping space 132 is provided.

[0021] The first floor wet area space 111 and the first floor corridor space 112 are connected at the bottom by a communication passage 115. Since the air in the first floor wet area space 111 is exhausted outside the house 10 via the first floor wet area space fan exhaust port 41 (described later), the air below the first floor corridor space 112 flows through the communication passage 115 toward the first floor wet area space 111. The first floor corridor space 112 and the first floor living space 113 are connected at the bottom by a communication passage 116. Since the air in the first floor corridor space 112 is exhausted outside the house 10 via the first floor corridor exhaust fan exhaust port 42 (described below), the air below the first floor living space 113 flows through the communication passage 116 toward the first floor corridor space 112.

[0022] On the second floor, the second floor storage space 121, the second floor first living space 122, the second floor corridor space 123, and the second floor second living space 124 are arranged in this order from one side to the other side in the left-right direction (from left to right in Figs. 1 and 2). Each space 121, 122, 123, and 124 is formed by being surrounded by a floor, a wall, and a ceiling. On the second floor, the attic space 125 is arranged between the roof ceiling 15 and the roof 13. The roof ceiling 15 constitutes the ceiling of the second floor upper side piping space 134 provided above the ceilings of the second floor storage space 121, the second floor first living space 122, the second floor corridor space 123, and the second floor second living space 124. The attic space 125 is located below the roof side insulation line 181 on the roof 13 side of the house 10 and is insulated. The attic space 125 may also be called an attic or a ceiling. Additionally, the attic space 125 may be configured as a living space for human habitation.

[0023] On the second floor, a second floor piping space 133 is provided between the other side wall surface 121a of the other side storage space of the second floor storage space 121 and one side wall surface 122a of the first living space 122 on the second floor. In addition, a second floor upper piping space 134 is provided between the ceilings of each space 121, 122, 123, 124 on the second floor and the roof ceiling 15.

[0024] The second floor storage space 121 and the second floor first living space 122 are connected at the bottom by a communication passage 126. Since the air in the second floor storage space 121 is exhausted to the outside of the house 10 through the second floor storage space exhaust fan exhaust port 51 (described later), the air below the second floor first living space 122 flows through the communication passage 126 toward the second floor storage space 121. The second floor first living space 122 and the second floor corridor space 123 are connected at the bottom by a communication passage 127. Since the air in the second floor corridor space 123 is exhausted to the outside of the house 10 via the second floor corridor exhaust fan exhaust port 53 (described later), the air below the second floor first living space 122 flows through the communication passage 127 toward the second floor corridor space 123. The second floor corridor space 123 and the second floor second living space 124 are connected at the bottom by a communication passage 128. Since the air in the second floor corridor space 123 is exhausted outside the house 10 via the second floor corridor exhaust fan exhaust port 53 (described later), the air below the second floor second living space 124 flows through the communication passage 128 toward the second floor corridor space 123.

[0025] In this embodiment, the floor 16 of the first floor of the house 10 constitutes the finished surface (finishing part) located at the bottom of the living space or non-living space on the first floor. The floor 17 of the second floor of the house 10 constitutes the finished surface (finishing part) located at the bottom of the living space or non-living space on the second floor. The roof ceiling 15 of the second floor of the house 10 constitutes the finished surface (finishing part) at the top of the non-living space on the second floor. Furthermore, the ceilings of each space 111, 112, 113, 121, 122, 123, 124 on each floor constitute the finished surface (finishing part) at the top of each space.

[0026] Air conditioning system 1 includes air conditioner 2, ventilation device 3, first floor wet space fan exhaust vent 41, first floor corridor exhaust fan exhaust vent 42, first floor first living space supply fan inlet 43, first floor second living space supply fan inlet 44, first floor first living space exhaust fan exhaust vent 45, first floor first living space exhaust fan inlet 46 (first inlet), second floor storage space exhaust fan exhaust vent 51, second floor first living space exhaust fan inlet 52, first floor first living space exhaust fan inlet 53, first floor side circulation fan inlet 46 (first inlet), second floor storage space exhaust fan exhaust vent 54, second floor first living space exhaust fan inlet 55, first floor side circulation fan inlet 47 (first inlet), second floor storage space exhaust fan exhaust vent 56, second floor side circulation fan inlet 57, second floor storage space exhaust fan exhaust vent 58, second floor first living space exhaust fan inlet 59, second floor first living space exhaust fan inlet 60, first floor side circulation fan inlet 61, second floor side circulation fan inlet 62, first floor side circulation fan inlet 63, first floor side circulation fan inlet 64, second floor side circulation fan inlet 65, first floor side circulation fan inlet 66, first floor side circulation fan inlet 67, second floor side circulation fan inlet 68, second floor side circulation fan inlet 69, second floor side circulation fan inlet 70, second floor side circulation fan inlet 71, second floor side circulation fan inlet 72, second floor side circulation fan inlet 73, first floor side circulation fan inlet 74, first floor side circulation fan inlet 75, first floor side circulation fan inlet 76, first floor side circulation fan inlet 77, first floor side circulation fan inlet 78, second floor side circulation fan inlet 79, second floor side circulation fan inlet 79, second floor side circulation fan inlet 79, second floor side circulation fan inlet 79, second floor side circulation fan inlet 79, The room air supply fan has an air supply port 52, an exhaust fan exhaust port 53 for the second floor corridor, an air supply fan air supply port 54 for the second living space on the second floor, a second floor circulation fan intake port 55 (second intake port), a first air supply chamber 71, a second air supply chamber 72, a Y-shaped pipe 73, a first exhaust chamber 74, a second exhaust chamber 75, a switching unit 8, an air supply duct L1, an exhaust duct L2, and a circulation intake duct L3. The air supply duct L1, the exhaust duct L2, and the circulation intake duct L3 are pipes that form a passageway through which air flows, and are formed, for example, by ducts.

[0027] The air conditioner 2 includes an air conditioner indoor unit 21 and an air conditioner outdoor unit 22. The air conditioner indoor unit 21 is disposed in a piping space 132 on the upper side of the first floor between the first floor and the second floor. The air conditioner outdoor unit 22 is connected to the air conditioner indoor unit 21 and is disposed, for example, on the ground 101 outside the exterior wall 14 of the house 10.

[0028] The air conditioning indoor unit 21 has a heating function for heating the inside of the house 10 and a cooling function for cooling the inside of the house 10. The air conditioning indoor unit 21 heats the air inside the house 10 introduced through the first floor circulation fan intake 46 or the second floor circulation fan intake 55 and air outside the house 10 introduced by the ventilation device 3 (described later) by using the heating function or cools the air by using the cooling function, and supplies the air to the inside of the house 10. The air conditioning indoor unit 21 supplies the air heated by the heating function or the air cooled by using the cooling function to each of the spaces 113, 122, 124 via the supply air duct L1 through the supply air fan intake 43 for the first living space on the first floor, the supply air fan intake 44 for the second living space on the first floor, the supply air fan intake 52 for the first living space on the second floor, and the supply air fan intake 54 for the second living space on the second floor.

[0029] First floor first living space supply fan air intake 43 is disposed on the upper side of one side wall surface 113a of first floor living space 113 on the first floor. First floor second living space supply fan air intake port 44 is disposed near the center in the left-right direction of indoor ceiling 113b of first floor living space 113 on the first floor. Second floor first living space supply fan air intake port 52 is disposed on the upper side of other side wall surface 122b of second floor first living space 122 on the second floor. Second floor second living space supply fan air intake 54 is disposed on the second floor, at the upper side of one side wall surface 124a of second floor second living space 124.

[0030] The supply air duct L1 is a piping for introducing air outside the house 10 into a ventilation device 3 (described later), introducing the air introduced into the ventilation device 3 into the air conditioner 2, and supplying air heated by the heating function of the air conditioner 2 or air cooled by the cooling function of the air conditioner 2 to the first floor living space 113, the second floor first living space 122, and the second floor second living space 124. The supply air duct L1 has a ventilation device introduction duct L11, an air conditioner introduction duct L12, a first floor introduction duct L13, a first supply air duct L14, a second supply air duct L15, a second floor introduction duct L16, a third supply air duct L17, and a fourth supply air duct L18.

[0031] The ventilation device introduction duct L11 is a pipe that introduces air from outside the house 10 to the ventilation device 3. The air conditioner introduction duct L12 is a piping from the ventilation device 3 to the air conditioner indoor unit 21. The first floor side introduction duct L13 branches off at the air conditioning indoor unit 21, and is a pipe extending from the air conditioning indoor unit 21 to the first air supply chamber 71. The first air supply duct L14 branches off in the first air supply chamber 71, and is a piping from the first air supply chamber 71 to the air supply fan air supply port 43 for the first living space on the first floor. The second air supply duct L15 branches off in the first air supply chamber 71, and is a piping from the first air supply chamber 71 to the air supply fan intake port 44 for the first floor second living space. The second floor introduction duct L16 branches off at the air conditioning indoor unit 21, and is a piping from the air conditioning indoor unit 21 to the second supply air chamber 72. The third supply air duct L17 branches off at the second supply air chamber 72, and is a piping that runs from the second supply air chamber 72 to the supply air fan intake port 52 for the first living space on the second floor. The fourth supply air duct L18 branches off at the second supply air chamber 72, and is a piping that runs from the second supply air chamber 72 to the supply air fan intake port 54 for the second living space on the second floor.

[0032] When the heating function is operated, for example, in winter, cold air near the bottom of the insulated section 18 in the house 10 is introduced into the air conditioner 2 via the first floor circulation fan intake 46. The first floor circulation fan intake 46 is connected to the air conditioner 2 by a circulation intake duct L3 (described later). In this embodiment, the first floor circulation fan intake 46 is disposed near the bottom of the insulated section 18 in the house 10.

[0033] Here, in this embodiment, the vicinity of the bottom of the insulated section 18 is preferably within a range of 1 m higher than the bottom of the insulated section 18, and more preferably within a range of 50 cm higher than the bottom of the insulated section 18. The vicinity of the bottom of the insulated section 18 in the house 10 is a place where the air in the house 10 is difficult to warm and the air conditioner 2 is considered to be ineffective even when the heating function is operated by the air conditioner 2 in winter. For example, in general, when the heating function is operated in winter, if the temperature of the feet of the living space or non-living space is 3°C or more lower than the heating set temperature, the air conditioning is considered to be ineffective. In this embodiment, the vicinity of the bottom of the insulated section 18 is a place where the temperature is 3°C or more lower than the heating set temperature when the heating function is operated.

[0034] In this embodiment, the first floor circulation fan intake 46 is disposed below the first floor piping space 131, for example, in the underfloor space 114. In this embodiment, the underfloor space 114 is the bottom part of the bottom floor of the house 10, and is also the bottom part of the insulated section 18.

[0035] Furthermore, when the cooling function is operated in the summer, for example, warm air near the top of the insulated section 18 in the house 10 is introduced into the air conditioner 2 via the second floor circulation fan intake 55. The second floor circulation fan intake 55 is connected to the air conditioner 2 by a circulation intake duct L3 (described later). In this embodiment, the second floor circulation fan intake 55 is disposed near the top of the insulated section 18 in the house 10.

[0036] Here, in this embodiment, the vicinity of the top of the insulated section 18 is preferably within a range of 1 m lower than the top of the insulated section 18, and more preferably within a range of 50 cm lower than the top of the insulated section 18. The vicinity of the top of the insulated section 18 in the house 10 is a place where the air in the house 10 is difficult to cool and the air conditioner 2 is considered to be ineffective even when the cooling function is operated by the air conditioner 2 in summer. For example, in general, when the cooling function is operated in summer, if the temperature near the ceiling of the living space or non-living space is 3°C or more higher than the set temperature of the cooling, the air conditioning is considered to be ineffective. In this embodiment, the vicinity of the top of the insulated section 18 is a place where the temperature is 3°C or more higher than the set temperature of the cooling function when the cooling function is operated.

[0037] In this embodiment, the second floor circulation fan intake 55 is disposed, for example, in the attic space 125. In this embodiment, the attic space 125 is the top of the top floor of the house 10, and is also the top of the insulated section 18.

[0038] The switching unit 8 is provided midway through the circulation intake duct L3. The switching unit 8 can switch the air inside the house 10 to be introduced into the air conditioner 2 between cold air introduced through the first floor circulation fan intake port 46 and warm air introduced through the second floor circulation fan intake port 55.

[0039] The switching unit 8 is configured to be capable of selectively switching between a first floor air suction state in which air sucked into the first floor circulation fan intake port 46 is introduced into the air conditioning indoor unit 21, and a second floor air suction state in which air sucked into the second floor circulation fan intake port 55 is introduced into the air conditioning indoor unit 21, midway through the circulation intake duct L3.

[0040] The circulation intake duct L3 is a pipe that circulates cold air near the bottom of the insulated section 18 or warm air near the top of the insulated section 18 to the air conditioning indoor unit 21. The circulation intake duct L3 has a first floor circulation intake duct L31, a second floor circulation intake duct L32, and a common circulation intake duct L33.

[0041] When the switching unit 8 switches to the first floor air suction state, the circulation intake duct L3 circulates the cold air near the top of the insulated section 18 to the air conditioning indoor unit 21 via the first floor circulation intake duct L31 and the common circulation intake duct L33. When the switching unit 8 switches to the second floor air suction state, the circulation intake duct L3 circulates the warm air near the top of the insulated section 18 to the air conditioning indoor unit 21 via the second floor circulation intake duct L32 and the common circulation intake duct L33.

[0042] The first floor circulation intake duct L31 is a piping from the first floor circulation fan intake port 46 to the switching unit 8, and circulates the air sucked in from the first floor circulation fan intake port 46 to the switching unit 8. The second floor circulation intake duct L32 is a piping from the second floor circulation fan intake port 55 to the switching unit 8, and circulates the air taken in from the second floor circulation fan intake port 55 to the switching unit 8. The common circulation intake duct L33 is a pipe having one end connected to the switching unit 8 and the other end connected to the air conditioning indoor unit 21, which circulates the air that has circulated through the first floor side circulation intake duct L31 or the second floor side circulation intake duct L32, as switched by the switching unit 8, to the air conditioning indoor unit 21.

[0043] For example, in winter, when the air conditioner 2 is performing a heating function, by switching the switching unit 8 to the first floor air suction state, cold air from the underfloor space 114 is introduced into the air conditioner 2. Also, for example, in summer, when the air conditioner 2 is performing a cooling function, by switching the switching unit 8 to the second floor air suction state, warm air from the attic space 125 is introduced into the air conditioner 2.

[0044] The switching unit 8 may be configured, for example, to switch between the first floor air suction state and the second floor air suction state by manual operation, or may be configured to automatically switch between the first floor air suction state and the second floor air suction state in conjunction with the cooling or heating of the air conditioning unit 2.

[0045] In this embodiment, a common circulation intake duct L33 is provided in the circulation intake duct L3, but this is not limited to this. A first floor side circulation intake duct L31 and a second floor side circulation intake duct L32 may be provided separately, each connected to the air conditioning indoor unit 21, and switched between by a switching unit built into the air conditioning indoor unit 21.

[0046] The ventilation device 3 is disposed in the piping space 132 above the first floor between the first and second floors. The ventilation device 3 introduces air outside the house 10 into the air conditioner 2, thereby introducing the air outside the house 10 into the house 10 via the air conditioner 2, and exhausting the air inside the house 10 to the outside of the house 10, thereby ventilating the house 10. The ventilation device 3 also has a heat exchange function, and performs ventilation 24 hours a day by performing an air supply operation and an exhaust operation while performing heat exchange between the supply air and the exhaust air.

[0047] The ventilation device 3 exhausts air from each of the predetermined spaces 111, 112, 113 sucked in through the first floor water space fan exhaust port 41, the first floor corridor exhaust fan exhaust port 42, and the first floor first living space exhaust fan exhaust port 45 to the outside of the house 10 on the first floor through the exhaust duct L2, and exhausts air from each of the predetermined spaces 121, 123 sucked in through the second floor storage space exhaust fan exhaust port 51 and the second floor corridor exhaust fan exhaust port 53 to the outside of the house 10 on the second floor through the exhaust duct L2. The ventilation device 3 introduces air from outside the house 10 into the air conditioner 2, thereby supplying air from outside the house 10 to the predetermined space 113 through the air inlets 43, 44 on the first floor through the air conditioner 2, and supplying air from outside the house 10 to the predetermined spaces 122, 124 through the air inlets 52, 54 on the second floor.

[0048] The first floor wet space fan exhaust port 41 is disposed in the indoor ceiling 111b of the first floor wet space 111 on the first floor. The first floor corridor exhaust fan exhaust port 42 is disposed in the indoor ceiling 112b of the first floor corridor space 112 on the first floor. The exhaust fan exhaust port 45 for the first living space on the first floor is disposed on the other side of the indoor ceiling 113b of the first floor living space 113 on the first floor.

[0049] Second floor storage space exhaust fan exhaust port 51 is disposed in interior ceiling 121b of second floor storage space 121 on the second floor. The second floor corridor exhaust fan exhaust port 53 is disposed in the indoor ceiling 123a of the second floor corridor space 123 on the second floor.

[0050] The exhaust duct L2 is a pipe for discharging the air in the first floor wet area space 111, the air in the first floor corridor space 112, the air in the first floor living space 113, the air in the second floor storage space 121, and the air in the second floor corridor space 123 to the outside of the house 10. The exhaust duct L2 has a first floor wet area exhaust duct L21, a first floor corridor exhaust duct L22, a first floor living room exhaust duct L23, a first floor exhaust junction duct L24, a second floor storage space exhaust duct L25, a second floor corridor exhaust duct L26, a second floor exhaust junction duct L27, a total exhaust junction duct L28, and an exhaust discharge duct L29.

[0051] The first floor wet area exhaust duct L21 is a pipe extending from the first floor wet area fan exhaust port 41 to the first exhaust chamber 74. The first floor corridor side exhaust duct L22 is a pipe extending from the first floor corridor exhaust fan exhaust port 42 to the first exhaust chamber 74. The first floor living room side exhaust duct L23 is a pipe extending from the exhaust fan exhaust port 45 for the first living space on the first floor to the first exhaust chamber 74. The first floor exhaust junction duct L24 is a piping from the first exhaust chamber 74 to the Y-pipe 73. The second floor storage space side exhaust duct L25 is a piping from the exhaust fan exhaust port 51 for the second floor storage space to the second exhaust chamber 75. The second floor corridor side exhaust duct L26 is a piping from the second floor corridor exhaust fan exhaust port 53 to the second exhaust chamber 75. The second floor exhaust junction duct L27 is a piping from the second exhaust chamber 75 to the Y-pipe 73. The total exhaust junction duct L28 is a piping from the Y-pipe 73 to the ventilation device 3. The exhaust discharge duct L29 is a pipe that discharges the air discharged from the ventilation device 3 to the outside of the house 10.

[0052] The ventilation device 3 ventilates the house 10 24 hours a day, whether the air conditioner 2 is operating or not. When the air conditioner 2 is not operating, the air conditioner 2 does not perform cooling or heating, but ventilation by the ventilation device 3 is performed by introducing air that has passed through the inside of the air conditioner 2 into the house 10.

[0053] In this embodiment, the amount of air introduced into the air conditioning indoor unit 21 of the air conditioner 2 is, for example, 150 to 160 m 3 / h (Lube), and the amount of air drawn in from inside the house 10 (the amount of air drawn in by the first floor circulation fan intake 46 or the second floor circulation fan intake 55) is, for example, 350 m 3 This allows the air conditioning indoor unit 21 to cool the introduced air by the cooling function and / or heat it by the heating function, and to keep the air temperature at 500 m 3 Air is supplied to the house 10 at a rate of about 350 m3 / h. 3 Air is sucked in from the inside of the house 10 at a rate of about 100 sq. m. / h and introduced into the air conditioner 2, circulated within the house 10, cooled by the cooling function of the air conditioner 2 and / or heated by the heating function, and then supplied again to each of the designated spaces 113, 122, 124.

[0054] Next, a description will be given of the operation of the air conditioning system 1 of this embodiment. A case where the air conditioning system 1 of this embodiment is used in winter and a case where it is used in summer will be described.

[0055] First, a case where the air conditioning system 1 is used in winter will be described. When the air conditioning system 1 is used in winter, the ventilation function and heat exchange function of the ventilation device 3 are operated while the heating function of the air conditioner 2 is operated, and the switching unit 8 is switched to the first floor air suction state as shown in Figure 1.

[0056] Air from outside the house 10 is introduced into the air conditioner 2 from the ventilation device 3, and by switching the switching unit 8 to the first floor air suction state, air from the underfloor space 114 is introduced through the first floor circulation fan air intake port 46. The air conditioner 2 heats the air introduced by the ventilation device 3 and the air introduced through the first floor circulation fan air intake port 46 using its heating function, and supplies the air to each of the prescribed spaces 113, 122, 124.

[0057] Specifically, in winter, the temperature of the air in the underfloor space 114 near the bottom of the insulated section 18 is difficult to warm up, so by switching the switching unit 8 to the first floor air suction state, the first floor circulation fan intake 46 sucks in the cold air in the underfloor space 114 and introduces it into the air conditioner 2. In this embodiment, the vicinity of the bottom of the insulated section 18 is preferably within a range of up to a position 1 m higher than the bottom of the insulated section 18, and more preferably within a range of up to a position 50 cm higher than the bottom of the insulated section 18. The vicinity of the bottom of the insulated section 18 in the house 10 is a place where the air is difficult to warm up in the house 10 in winter, and where the air conditioner 2 is considered to be ineffective, even if the heating function is operated by the air conditioner 2.

[0058] The air conditioning unit 2 heats the air introduced from the ventilation unit 3 and the air introduced through the first floor circulation fan intake port 46 by switching the switching unit 8 to the first floor air suction state, using its heating function, and supplies air to a designated space 113 through each air intake port 43, 44 on the first floor, and supplies air to designated spaces 122, 124 through each air intake port 52, 54 on the second floor.

[0059] In this embodiment, the first floor circulation fan intake 46 is disposed in the underfloor space 114. The first floor circulation fan intake 46 disposed in the underfloor space 114 near the lowest part of the insulated section 18 draws in air from the underfloor space 114 near the lowest part of the insulated section 18, where the temperature does not rise easily and heating is difficult, when the heating function is performed by the air conditioner 2 in winter. The cold air drawn in by the first floor circulation fan intake 46 is returned to the air conditioner 2, heated again by the heating function of the air conditioner 2, and supplied to each space 113, 122, 124. In this way, the air conditioning system 1 can cause the heating function of the air conditioner 2 to function while introducing cold air from within the house 10 and circulating the air.

[0060] Next, a case where the air conditioning system 1 is used in summer will be described. When the air conditioning system 1 is used in the summer, the ventilation function and heat exchange function of the ventilator 3 are operated while the cooling function of the air conditioner 2 is operated, and the switching unit 8 is switched to the second floor air suction state as shown in Figure 2.

[0061] Air from outside the house 10 is introduced into the air conditioner 2 through the ventilation device 3, and by switching the switching unit 8 to the second floor air suction state, air from the attic space 125 is introduced through the second floor circulation fan intake port 55. The air conditioner 2 cools the air introduced by the ventilation device 3 and the air introduced through the second floor circulation fan intake port 55 using its cooling function, and supplies the air to each of the prescribed spaces 113, 122, 124.

[0062] Specifically, in summer, the temperature of the air in the attic space 125 near the top of the insulated section 18 is difficult to cool, so by switching the switching unit 8 to the second floor air suction state, the warm air in the attic space 125 is sucked in by the second floor circulation fan intake 55 and introduced into the air conditioner 2. In this embodiment, the vicinity of the top of the insulated section 18 is preferably within a range of 1 m lower than the bottom of the insulated section 18, and more preferably within a range of 50 cm lower than the bottom of the insulated section 18. The vicinity of the top of the insulated section 18 in the house 10 is a place where the air is difficult to cool in summer and where the air conditioner 2 is considered to be ineffective, even if the cooling function is operated by the air conditioner 2.

[0063] The air conditioning unit 2 cools the air introduced from the ventilation unit 3 and the air introduced through the second floor circulation fan intake port 55 by switching the switching unit 8 to the second floor air suction state, using its cooling function, and supplies the air to a designated space 113 through each air intake port 43, 44 on the first floor, and supplies air to designated spaces 122, 124 through each air intake port 52, 54 on the second floor.

[0064] In this embodiment, the second floor circulation fan intake 55 is disposed in the attic space 125. When the air conditioning unit 2 is operated to perform the cooling function in summer, the second floor circulation fan intake 55 disposed in the attic space 125 draws in air from the attic space 125 near the top of the insulated section 18, where the temperature is difficult to lower and cooling is difficult to achieve. The warm air drawn in by the second floor circulation fan intake 55 is returned to the air conditioning unit 2, cooled again by the cooling function of the air conditioning unit 2, and supplied to each space 113, 122, 124. In this way, the air conditioning unit 2 can perform its cooling function while introducing the warm air in the house 10 into the air conditioning unit 2 to circulate the air.

[0065] In the above air conditioning system 1, when heating in winter, cold air from the underfloor space 114 near the bottom of the insulated section 18 is introduced into the air conditioner 2, and the air conditioner 2 can warm the introduced air and supply it to each space 113, 122, 124 of the house 10. Also, when cooling in summer, warm air from the attic space 125 near the top of the insulated section 18 is introduced into the air conditioner 2, and the air conditioner 2 can cool the introduced air and supply it to each space 113, 122, 124 of the house 10. Therefore, by operating the heating function or cooling function of the air conditioner 2 while introducing cold air near the bottom of the insulated section 18 or warm air near the top of the insulated section 18 to circulate the air, the temperature difference of the air in the house 10 can be reduced while generating an air flow. Therefore, with a simple configuration, it is possible to adjust the temperature inside the house 10 to a uniform temperature. In particular, in a house 10 that is highly airtight and has high thermal insulation performance, the air conditioning system 1 can be operated with reduced power consumption. In addition, while ventilating the inside of the house 10 with the ventilation device 3, the temperature inside the house 10 can be adjusted to a uniform temperature.

[0066] According to the air conditioning system of the present embodiment described above, the following effects are achieved. The air conditioning system 1 of this embodiment is equipped with an air conditioner 2 that heats the air inside the house 10 that is introduced through the first floor circulation fan intake 46 or the second floor circulation fan intake 55 using a heating function or cools it using a cooling function and supplies it inside the house 10, and when the heating function is functioning, the first floor circulation fan intake 46 is positioned near the bottom of the insulated section 18 inside the house 10, and when the cooling function is functioning, the second floor circulation fan intake 55 is positioned near the top of the insulated section 18 inside the house 10.

[0067] Therefore, when the heating function is performed, cold air near the bottom of the insulated section 18 in the house 10 is introduced into the air conditioner 2 through the first floor circulation fan intake 46, or when the cooling function is performed, warm air near the top of the insulated section 18 in the house 10 is introduced through the second floor circulation fan intake 55. This allows the air conditioner 2 to circulate the cold or warm air in the house 10 and perform air conditioning by performing the heating or cooling function. Therefore, with a simple configuration, the entire temperature in the house 10 can be adjusted to a uniform temperature. In particular, in a house 10 that is highly airtight and has high insulation performance, the air conditioning system 1 can be operated with low power consumption.

[0068] In this embodiment, the first floor circulation fan intake 46 is disposed in the underfloor space 114, and the second floor circulation fan intake 55 is disposed in the attic space 125. Therefore, when the house 10 is constructed as a two-story building, air from an area with more severe temperature conditions is sucked in and introduced into the air conditioner 2, whereby cooler or warmer air is circulated and the heating or cooling function is operated, thereby performing air conditioning. Therefore, the temperature inside the house 10 as a whole can be adjusted to a uniform temperature more efficiently.

[0069] Furthermore, in this embodiment, the air conditioner 2 has both a heating function and a cooling function, and includes a switching unit 8 that can switch the air introduced into the air conditioner 2 to either cold air introduced through the first floor circulation fan air intake 46 or warm air introduced through the second floor circulation fan air intake 55. As a result, when the heating function and the cooling function are operated by switching using the switching unit 8, the overall air temperature inside the house 10 can be adjusted to a uniform temperature by switching the switching unit 8 according to the season, for example, summer or winter.

[0070] Moreover, in this embodiment, the house 10 is further provided with a ventilation device 3 that introduces air outside the house 10 into the house 10 and exhausts air inside the house 10 to the outside of the house 10, and the ventilation device 3 introduces the air outside the house 10 into the air conditioner 2, and the air conditioner 2 warms the air outside the house 10 introduced by the ventilation device 3 using a heating function or cools it using a cooling function and supplies it into the house 10. In this way, an air conditioning system 1 can be provided with the air conditioner 2 and the ventilation device 3, and a system can be realized that can adjust the overall temperature inside the house 10 to a uniform temperature while ventilating the house 10.

[0071] <Second embodiment> Next, a second embodiment of the present invention will be described. Fig. 3 is a diagram showing the heating and cooling states of a house 10A equipped with an air conditioning system 1A according to the second embodiment of the present invention. The house 10A of the second embodiment is different from the house 10 of the first embodiment in the heat-insulated section 18A. In addition, in the second embodiment, the positions of the first floor side circulation fan intake 46A and the second floor side circulation fan intake 55A are different from those of the first floor side circulation fan intake 46 and the second floor side circulation fan intake 55 of the first embodiment. In the second embodiment, the same configuration as in the first embodiment is given the same reference numerals and the description is omitted. In addition, in FIG. 3 of the second embodiment, the air flow during heating and cooling, which is described separately in FIG. 1 and FIG. 2 of the first embodiment, is shown in one figure. In FIG. 3, the air drawn into the first floor side circulation fan intake 46A during cooling is indicated by a solid arrow, and the air drawn into the second floor side circulation fan intake 55A during heating is indicated by a dashed arrow.

[0072] The insulated section 18A of the second embodiment does not have the roof side insulation line 181 arranged along the roof 13 of the first embodiment, but has a shed insulation line 183 arranged along the roof ceiling 15 above the roof ceiling 15. Also, the insulated section 18A of the second embodiment has an outer insulation line 182A whose lower end is shorter than the exterior wall side insulation line 182 of the first embodiment and which extends in the vertical direction from the roof 13 to the floor 16. Also, the insulated section 18A has a floor side insulation line 184 arranged along the floor 16 below the floor 16. In the second embodiment, the floor 16 of the first floor of the house 10 is disposed along the floor-side insulation line 184 of the insulated section 18A, and thus constitutes an insulated section, and is also the finished surface (finishing part) disposed at the bottom of the living space or non-living space on the first floor. The roof ceiling 15 of the second floor of the house 10 is disposed along the shed insulation line 183 of the insulated section 18A, and thus constitutes an insulated section, and is also the finished surface (finishing part) at the top of the non-living space on the second floor.

[0073] In addition, the air conditioning system 1A of the second embodiment has a first floor circulation fan intake 46A and a second floor circulation fan intake 55A, and the first floor circulation fan intake 46A and the second floor circulation fan intake 55A are positioned at positions different from the positions at which the first floor circulation fan intake 46 and the second floor circulation fan intake 55 of the first embodiment are positioned.

[0074] In the second embodiment, the first floor circulation fan intake 46A is disposed near the floor 16 (insulated section 18A, finishing section) below the first floor piping space 131 on the first floor. The vicinity of the floor 16 below the first floor piping space 131 on the first floor is near the bottom of the insulated section 18A of the house 10, and is near the floor 16 disposed at the bottom of the non-residential space on the bottom floor of the two-story house 10.

[0075] Here, in this embodiment, the vicinity of the floor 16 (insulated section 18A, finishing section) located at the bottom of the non-residential space on the bottom floor of the two-story house 10 is preferably within a range of up to a position 1 m higher than the top surface of the floor 16, and more preferably within a range of up to a position 50 cm higher than the top surface of the floor 16. The vicinity of the floor 16 at the bottom of the non-residential space on the bottom floor of the two-story house 10 in the house 10 is a place where the air is difficult to warm in the house 10 and the air conditioner 2 is considered to be ineffective even if the heating function is operated by the air conditioner 2 in winter. For example, in general, when the heating function is operated in winter, if the temperature of the feet of the living space or non-residential space is 3°C or more lower than the heating setting temperature, the air conditioning is considered to be ineffective. In this embodiment, the vicinity of the floor 16 located at the bottom of the non-residential space on the bottom floor of the two-story house 10 is a place where the temperature is 3°C or more lower than the heating setting temperature when the heating function is operated.

[0076] Additionally, the second floor circulation fan intake 55A is disposed near the roof ceiling 15 (insulated section 18A, finishing section) of the second floor upper piping space 134. The vicinity of the roof ceiling 15 above the second floor upper piping space 134 is near the top of the insulated section 18A of the house 10, and is near the roof ceiling 15 disposed at the top of the non-residential space on the top floor of the two-story house 10.

[0077] Here, in this embodiment, the vicinity of the roof ceiling 15 (insulated section 18A, finishing part) arranged at the top of the non-residential space on the top floor of the two-story house 10 is preferably within a range of 1 m lower than the lower surface of the roof ceiling 15, and more preferably within a range of 50 cm lower than the lower surface of the roof ceiling 15. The vicinity of the roof ceiling 15 at the top of the non-residential space on the top floor of the two-story house 10 is a place where the air is difficult to cool in the house 10 and the air conditioner 2 is considered to be ineffective even if the cooling function is operated by the air conditioner 2 in summer. For example, in general, when the cooling function is operated in summer, if the temperature near the ceiling of the residential space or non-residential space is 3°C or more higher than the set temperature of the cooling, the air conditioning is considered to be ineffective. In this embodiment, the vicinity of the roof ceiling 15 arranged at the top of the non-residential space on the top floor of the two-story house 10 is a place where the temperature is 3°C or more higher than the set temperature of the cooling when the cooling function is operated.

[0078] The air conditioning system 1A of the second embodiment configured as above can also achieve the same effects as those of the first embodiment. Specifically, in the air conditioning system 1A of the second embodiment, the first floor side circulation fan intake 46A is disposed near the bottom floor 16 of the non-residential space on the bottom floor of the house 10. Also, the second floor side circulation fan intake 55A is disposed near the top roof ceiling 15 of the non-residential space on the top floor of the house 10. As a result, air from a place with a harsher temperature condition is sucked in and introduced into the air conditioner 2, and the cold air near the floor 16 on the first floor in the house 10 or the warm air near the roof ceiling 15 on the second floor is circulated to perform the heating function or the cooling function, thereby performing air conditioning. Therefore, the entire temperature in the house 10A can be adjusted to a uniform temperature with a simple configuration.

[0079] <Third embodiment> Next, a third embodiment of the present invention will be described. Fig. 4 is a diagram showing the heating and cooling states of a house 10A equipped with an air conditioning system 1B according to the third embodiment of the present invention. In the third embodiment, the positions of the first floor circulation fan intake 46B and the second floor circulation fan intake 55B are different from those of the first floor circulation fan intake 46A and the second floor circulation fan intake 55A in the second embodiment. In the third embodiment, the same configuration as in the second embodiment is given the same reference numerals and the description is omitted. In addition, in FIG. 4 of the third embodiment, the air flow during heating and cooling is shown in one figure, as in FIG. 3 of the second embodiment. In FIG. 4, the air drawn into the first floor circulation fan intake 46B during cooling is shown by a solid arrow, and the air drawn into the second floor circulation fan intake 55B during heating is shown by a dashed arrow.

[0080] The house 10A of the third embodiment is configured similarly to the house 10A of the second embodiment, and the insulated compartment 18A also has a similar configuration. In addition, the third embodiment has a first floor circulation fan air intake 46B and a second floor circulation fan air intake 55B, and the first floor circulation fan air intake 46B and the second floor circulation fan air intake 55B are positioned at positions different from the positions at which the first floor circulation fan air intake 46A and the second floor circulation fan air intake 55A are positioned in the second embodiment.

[0081] In the third embodiment, the first floor circulation fan intake 46B is disposed near the floor 16 (insulated section 18A, finishing section) below one side wall surface 112a of the first floor corridor space 112. The vicinity of the floor 16 below one side wall surface 112a of the first floor corridor space 112 is the vicinity of the floor 16 disposed at the bottom of the non-residential space on the bottom floor of the two-story house 10. The vicinity of the floor 16 (insulated section 18A, finishing section) disposed at the bottom of the non-residential space on the bottom floor of the two-story house 10 is interpreted as in the second embodiment.

[0082] Further, second floor circulation fan intake 55B is disposed near the indoor ceiling 123a above one side wall surface 123b of the second floor corridor space 123. The vicinity of the indoor ceiling 123a above one side wall surface 123b of the second floor corridor space 123 is near the indoor ceiling 123a (finishing portion) disposed at the top of the non-residential space on the top floor of the two-story house 10.

[0083] Here, in this embodiment, the vicinity of the indoor ceiling 123a (finishing part) of the second floor corridor space 123 arranged at the top of the non-residential space on the top floor of the two-story house 10 is preferably within a range of 1 m lower than the bottom surface of the indoor ceiling 123a, and more preferably within a range of 50 cm lower than the bottom surface of the indoor ceiling 123a. The vicinity of the indoor ceiling 123a at the top of the non-residential space on the top floor of the two-story house 10 in the house 10 is a place where the air is difficult to cool in the house 10 and the air conditioner 2 is considered to be ineffective, even if the cooling function is operated by the air conditioner 2 in summer. For example, in general, when the cooling function is operated in summer, if the temperature near the ceiling of the residential space or non-residential space is 3°C or more higher than the set temperature of the cooling, the air conditioning is considered to be ineffective. In this embodiment, the vicinity of the indoor ceiling 123a located at the top of the non-residential space on the top floor of the two-story house 10 is a place that is considered to be 3° C. or more higher than the cooling setting temperature when the cooling function is operated.

[0084] In the third embodiment, the first floor circulation fan intake 46B or the second floor circulation fan intake 55B draws in air present in the first floor corridor space 112 and the second floor corridor space 123, which are non-residential spaces. In the non-residential spaces, air is not supplied from the air conditioner 2 or the ventilation device 3, and the non-residential spaces are connected to adjacent spaces at the bottom, so that dirty air tends to collect in the spaces. Therefore, air from the non-residential spaces, which are not air-conditioned, is introduced into the air conditioner 2 through the first floor circulation fan intake 46B or the second floor circulation fan intake 55B, and the air cooled or heated by the air conditioner 2 is supplied to the residential space, so that an air flow is generated and the cooling or heating function can be efficiently performed. Thus, an energy saving effect can be achieved.

[0085] The air conditioning system 1B of the third embodiment configured as above can also achieve the same effects as those of the first and second embodiments. Specifically, in the air conditioning system 1B of the third embodiment, the first floor side circulation fan intake 46B is disposed near the bottom floor 16 (insulated section 18A, finishing section) of the first floor corridor space 112 (non-residential space) of the lowest floor of the house 10. Also, the second floor side circulation fan intake 55B is disposed near the indoor ceiling 123a (finishing section) of the second floor corridor space 123 (non-residential space) of the top floor of the house 10. As a result, air from a place with a harsher temperature condition is sucked in and introduced into the air conditioner 2, and the cold air near the floor 16 of the first floor corridor space 112 on the first floor in the house 10 or the warm air near the indoor ceiling 123a of the second floor corridor space 123 on the second floor is circulated, and the heating function or the cooling function is operated to perform air conditioning. Therefore, the temperature in the entire house 10A can be adjusted to a uniform temperature with a simple configuration.

[0086] <Fourth embodiment> Next, a fourth embodiment of the present invention will be described. Fig. 5 is a diagram showing the heating and cooling states of a house 10 equipped with an air conditioning system 1C according to the fourth embodiment of the present invention. The air conditioning system 1C of the fourth embodiment is the air conditioning system 1 of the first embodiment equipped with an air conditioning maintenance structure 9. The same components as those of the first embodiment are given the same reference numerals and will not be described. Note that, in FIG. 5 of the fourth embodiment, as in FIG. 3 of the second embodiment, the air flow during heating and cooling is shown in one diagram. In FIG. 5, the air drawn into the first floor circulation fan intake 46 during cooling is shown by a solid arrow, and the air drawn into the second floor circulation fan intake 55C during heating is shown by a dashed arrow.

[0087] An air conditioning system 1C of the fourth embodiment includes an air conditioning maintenance structure 9 in addition to the configuration of the air conditioning system 1 of the first embodiment. The air conditioning maintenance structure 9 is a structure for performing maintenance on the filters (first floor filter 912, second floor filter 922) of the air conditioning system 1. In detail, the air conditioning maintenance structure 9 is a structure that makes it easy to perform maintenance on the filters (first floor filter 912, second floor filter 922) provided in a circulation path for circulating the air sucked from the first floor circulation fan intake 46 and the second floor circulation fan intake 55C in the air conditioning system 1 to the air conditioner 2.

[0088] The air conditioning maintenance structure 9 of this embodiment includes a first floor air conditioning maintenance structure 91 provided on the first floor side, and a second floor air conditioning maintenance structure 92 provided on the second floor side.

[0089] In the fourth embodiment, on the first floor side, the end of the first floor side circulation intake duct L31 shown in Fig. 1 of the first embodiment on the side of the first floor side circulation fan intake port 46 is not connected to the first floor side circulation fan intake port 46, but the end on the side of the switching unit 8 is connected to the switching unit 8 to shorten the length, and a first floor side air conditioning maintenance structure 91 is provided. Also, on the second floor side, the end of the second floor side circulation intake duct L32 shown in Fig. 1 of the first embodiment on the side of the second floor side circulation fan intake port 55 is not connected to the second floor side circulation fan intake port 55, but the end on the side of the switching unit 8 is connected to the switching unit 8 to shorten the length, and a second floor side air conditioning maintenance structure 92 is provided.

[0090] As shown in Figure 5, the first floor air conditioning maintenance structure 91 has a first floor intake airtight space 911 (intake airtight space), a first floor circulation intake duct L31 (maintenance duct), a first floor circulation fan intake port 46 (intake port), a first floor filter 912 (filter), and a first floor maintenance door 913 (maintenance door).

[0091] The first floor airtight space for intake 911 is provided by utilizing the first floor piping space 131 (space in which a duct can be arranged) arranged between the first floor bathroom space 111 and the first floor corridor space 112 on the first floor in the left-right direction. The first floor airtight space for intake 911 is configured to include the first floor piping space 131 and extend in the up-down direction. A duct for sending air can be arranged in the space inside the first floor piping space 131. Even when the first floor airtight space for intake 911 is provided in the first floor piping space 131, a duct for sending air can be arranged in the first floor airtight space for intake 911 arranged in the first floor piping space 131.

[0092] The first floor side intake airtight space 911 is formed extending in the vertical direction, and extends in the vertical direction from midway through the underfloor space 114 to midway through the first floor side piping space 131. The first floor side intake airtight space 911 is configured to be airtight, and in the first floor side intake airtight space 911, air sucked in by the first floor side circulation fan intake port 46 connected on the lower side is circulated toward the first floor side circulation intake duct L31 connected on the upper side.

[0093] The first floor airtight space 911 for intake is formed, for example, in a cylindrical shape extending in the vertical direction, and is configured so that the inside of the first floor airtight space 911 for intake can be cleaned by opening a first floor maintenance door 913 described later. The first floor airtight space 911 for intake is formed by utilizing the first floor piping space 131, and is therefore formed in a cylindrical shape having a larger opening area than the opening area of ​​the duct. The first floor airtight space 911 for intake is configured to be large enough that, for example, a maintenance worker can use a cleaning tool to clean off soot by opening the first floor maintenance door 913 described later.

[0094] The first floor circulation intake duct L31 is connected to the lower end of the first floor intake airtight space 911. One side of the first floor circulation intake duct L31 is connected to the first floor intake airtight space 911, and the other side is connected to the air conditioner 2 via the switching unit 8 and the common circulation intake duct L33.

[0095] One side of the first floor side circulation intake duct L31 is connected to the lower end of the first floor side intake airtight space 911, with one end of the first floor side circulation intake duct L31 penetrating the lower end of the first floor side intake airtight space 911 and opening inside the first floor side intake airtight space 911. One end of the first floor side circulation intake duct L31 opens upward inside the first floor side intake airtight space 911. In this embodiment, the first floor side circulation intake duct L31 constitutes a maintenance duct, and a first floor side filter 912 is attached to the end that opens upward inside the first floor side intake airtight space 911.

[0096] The first floor circulation fan intake port 46 is disposed so as to communicate between the first floor intake airtight space 911 and the underfloor space 114 inside the house 10. As described above, the first floor circulation fan intake port 46 is disposed in the underfloor space 114 near the bottom of the insulated section 18 inside the house 10. The first floor circulation fan intake port 46 draws in air from the underfloor space 114 to circulate the air inside the house 10 to the air conditioner 2.

[0097] The first floor filter 912 is disposed inside the first floor airtight space 911 for intake so as to cover the opening at the end of the first floor circulation air intake duct L31 on the first floor airtight space 911 side. The first floor filter 912 captures foreign matter such as dust contained in the air that circulates through the first floor airtight space 911 for intake and flows into the first floor circulation air intake duct L31. The first floor filter 912 is attached to the opening at the end of the first floor circulation air intake duct L31 on the first floor airtight space 911 side for intake so that maintenance such as replacement can be performed with the first floor maintenance door 913 open.

[0098] The first floor side maintenance door 913 is configured to be able to open and close the first floor side intake airtight space 911, and is disposed on the lower side of one side wall surface 112a of the first floor corridor space 112. Since the first floor side maintenance door 913 is disposed on the lower side of one side wall surface 112a of the first floor corridor space 112, it is within reach, and a maintenance worker can easily open and close the first floor side maintenance door 913. In addition, the first floor side maintenance door 913 is formed in a position and size that allows a maintenance worker to perform maintenance such as replacing the first floor side filter 912. In addition, the first floor side maintenance door 913 is formed in a position and size that allows a maintenance worker to clean the inside of the first floor side intake airtight space 911.

[0099] In addition, the second floor air conditioning maintenance structure 92 has a second floor intake airtight space 921 (intake airtight space), a second floor circulation intake duct L32 (maintenance duct), a second floor circulation fan intake port 55C (intake port), a second floor filter 922 (filter), and a second floor maintenance door 923 (maintenance door).

[0100] The second floor airtight space 921 for intake is provided by utilizing the second floor piping space 133 (space in which a duct can be arranged) arranged between the second floor storage space 121 and the first living space 122 on the second floor in the left-right direction. The second floor airtight space 921 for intake is configured to extend in the vertical direction including the second floor piping space 133. A duct for sending air can be arranged in the space inside the second floor piping space 133. Even in a state in which the second floor airtight space 921 for intake is provided in the second floor piping space 133, a duct for sending air can be arranged in the second floor airtight space 921 for intake arranged in the second floor piping space 133. In this embodiment, the second floor introduction duct L16, the second floor exhaust junction duct L27, and the second floor storage space exhaust duct L25 are arranged to penetrate the second floor airtight space 921 for intake arranged in the second floor piping space 133.

[0101] The second floor air intake airtight space 921 is formed extending in the vertical direction, and extends from the upper end of the communication passage 126 formed in the lower part of the second floor piping space 133 to the lower end of the roof side insulation line 181. The second floor air intake airtight space 921 is configured to be airtight, and in the second floor air intake airtight space 921, air sucked by the second floor circulation fan intake port 55C connected to the upper side flows toward the second floor circulation intake duct L32 connected to the lower side.

[0102] The second floor airtight space 921 for intake is formed, for example, in a cylindrical shape extending in the vertical direction, and is configured so that the inside of the second floor airtight space 921 for intake can be cleaned by opening a second floor maintenance door 923 described later. The second floor airtight space 921 for intake is formed by utilizing the second floor piping space 131, and is therefore formed in a cylindrical shape having a larger opening area than the opening area of ​​the duct. The inside of the second floor airtight space 921 for intake is configured to be large enough that, for example, a maintenance worker can use a cleaning tool to clean off soot by opening the second floor maintenance door 923 described later.

[0103] The second floor circulation intake duct L32 is connected to the lower end of the second floor intake airtight space 921. One side of the second floor circulation intake duct L32 is connected to the second floor intake airtight space 921, and the other side is connected to the air conditioner 2 via the switching unit 8 and the common circulation intake duct L33.

[0104] One side of the second floor side circulation intake duct L32 is connected to the lower end of the second floor side intake airtight space 921, with one end of the second floor side circulation intake duct L32 penetrating the lower end of the second floor side intake airtight space 921 and opening inside the second floor side intake airtight space 921. One end of the second floor side circulation intake duct L32 opens upward inside the second floor side intake airtight space 921. In this embodiment, the second floor side circulation intake duct L32 constitutes a maintenance duct, and a second floor side filter 922 is attached to the end that opens upward inside the second floor side intake airtight space 921.

[0105] The second floor circulation fan intake 55C is disposed so as to communicate between the second floor intake airtight space 921 and the attic space 125 inside the house 10. As described above, the second floor circulation fan intake 55C is disposed in the attic space 125 near the top of the insulated section 18 inside the house 10. The second floor circulation fan intake 55C draws in air from the attic space 125 to circulate the air inside the house 10 to the air conditioner 2.

[0106] The second floor filter 922 is disposed inside the second floor airtight space 921 for intake so as to cover the opening at the end of the second floor circulation air intake duct L32 on the second floor airtight space 921 side. The second floor filter 922 captures foreign matter such as dust contained in the air that flows through the second floor airtight space 921 for intake and into the second floor circulation air intake duct L32. The second floor filter 922 is attached to the opening at the end of the second floor circulation air intake duct L32 on the second floor airtight space 921 side for intake so as to enable maintenance such as replacement when the second floor maintenance door 923 is open.

[0107] The second floor maintenance door 923 is configured to be able to open and close the second floor air-tight intake space 921, and is disposed on the lower side of one side wall surface 122a of the second floor first living space 122. Since the second floor maintenance door 923 is disposed on the lower side of one side wall surface 122a of the second floor first living space 122, it is within reach, and a maintenance worker can easily open and close the second floor maintenance door 923. In addition, the second floor maintenance door 923 is formed in a position and size that allows a maintenance worker to perform maintenance such as replacing the second floor filter 922. In addition, the second floor maintenance door 923 is formed in a position and size that allows a maintenance worker to clean the inside of the second floor air-tight intake space 921.

[0108] The first floor air conditioning maintenance structure 91 and the second floor air conditioning maintenance structure 92 configured as described above make it easy to perform maintenance work on the filters of the air conditioning system 1 (the first floor filter 912, the second floor filter 922). Conventionally, in configurations where a filter is attached to the air intake, if the air intake is located at a high position or under the floor, it was difficult to perform maintenance such as replacing the filter because maintenance work required climbing to a high position or peering under the floor. In contrast, in the present invention, by opening the maintenance doors (1st floor maintenance door 913, 2nd floor maintenance door 923), maintenance work such as replacing the filters (1st floor filter 912, 2nd floor filter 922) and cleaning the inside of the intake airtight space (1st floor intake airtight space 911, 2nd floor intake airtight space 921) can be easily performed.

[0109] According to the air conditioning maintenance structure 9 of the fourth embodiment, the following effects are achieved. The first floor air conditioning maintenance structure 91 of this embodiment comprises: a first floor air intake airtight space 911 which is provided in the first floor piping space 131 and has airtightness; a first floor circulation intake duct L31 which is connected to the first floor air intake airtight space 911 with one side opening into the first floor air intake airtight space 911 and the other side connected to the air conditioning unit 2; a first floor circulation fan air intake port 46 which is arranged to communicate the first floor air intake airtight space 911 with the space within the house 10; a first floor filter 912 which is arranged inside the first floor air intake airtight space 911 so as to cover the opening on the end side of the first floor circulation intake duct L31 on the first floor air intake airtight space 911 side; and a first floor maintenance door 913 which is configured to be able to open and close the first floor air intake airtight space 911 and is arranged in a position where maintenance of the first floor filter 912 can be performed. The second floor air conditioning maintenance structure 92 also includes a second floor airtight space 921 for intake that is airtight and is provided in the second floor piping space 133, a second floor circulation intake duct L32 that is connected to the second floor airtight space 921 with one side opening into the second floor airtight space 921 and the other side connected to the air conditioning unit 2, a second floor circulation fan air intake port 55C that is arranged to communicate the second floor airtight space 921 for intake with the space within the house 10, a second floor filter 922 that is arranged inside the second floor airtight space 921 for intake so as to cover the opening on the end side of the second floor circulation intake duct L32 on the second floor airtight space 921 side, and a second floor maintenance door 923 that is configured to be able to open and close the second floor airtight space 921 for intake, and is arranged in a position where maintenance of the second floor filter 922 can be performed.

[0110] Therefore, the filters (1st floor filter 912, 2nd floor filter 922) are positioned within reach when the maintenance doors (1st floor maintenance door 913, 2nd floor maintenance door 923) are opened, so that by opening the maintenance doors (1st floor maintenance door 913, 2nd floor maintenance door 923), maintenance work such as replacing the filters (1st floor filter 912, 2nd floor filter 922) and cleaning the inside of the intake airtight space (1st floor intake airtight space 911, 2nd floor intake airtight space 921) can be easily performed.

[0111] In this embodiment, the first floor circulation fan intake 46 is disposed in the underfloor space 114, and the second floor circulation fan intake 55C is disposed in the attic space 125. If a filter is disposed in the underfloor space 114 or the attic space 125, it is difficult to reach, making it difficult to perform maintenance work such as replacing the filter. In contrast, according to the configuration of the present invention, by opening the maintenance doors (first floor maintenance door 913, second floor maintenance door 923), maintenance work such as replacing the filters (first floor filter 912, second floor filter 922) and cleaning the inside of the intake airtight space (first floor intake airtight space 911, second floor intake airtight space 921) can be easily performed.

[0112] <Fifth embodiment> Next, a fifth embodiment of the present invention will be described. Fig. 6 is a diagram showing the state during heating and cooling in a house 10A equipped with an air conditioning system 1D according to the fifth embodiment of the present invention. The house 10A of the fifth embodiment has a different insulated section 18A compared to the house 10 of the fourth embodiment, and is similar to the insulated section 18A of the house 10A shown in FIG. 3 of the second embodiment. In addition, in the fifth embodiment, the positions of the first floor circulation fan intake 46 and the second floor circulation fan intake 55D are different from those of the first floor circulation fan intake 46 and the second floor circulation fan intake 55C of the fourth embodiment. In the fifth embodiment, the same configurations as those of the second and fourth embodiments are given the same reference numerals and the description is omitted. Note that, in the figure of the fifth embodiment, the air flow during heating and cooling is shown in one figure, as in FIG. 5 of the fourth embodiment.

[0113] The air conditioning system 1A of the fifth embodiment does not have the configuration related to the first floor side air conditioning maintenance structure 91 provided on the first floor of the fourth embodiment, and the configuration of the second floor side air conditioning maintenance structure 92A of the fifth embodiment differs from the configuration of the second floor side air conditioning maintenance structure 92 of the first embodiment.

[0114] In the fifth embodiment, the first floor circulation fan intake 46B is disposed near the floor 16 (finishing portion) on the lower side of the first floor piping space 131 on the first floor, similarly to Fig. 4 of the third embodiment. The first floor circulation fan intake 46B is disposed on the lower side of one side wall surface 112a of the first floor corridor space 112. A filter (not shown) is attached to the first floor circulation fan intake 46B, and since it is within reach, maintenance of the filter of the first floor circulation fan intake 46B can be easily performed.

[0115] Furthermore, with regard to the configuration of the second floor air conditioning maintenance structure 92A, the upper end of the second floor intake airtight space 921A extends only to the ceiling surface of the second floor first living space 122, and the second floor circulation fan intake port 55D is positioned near the ceiling (finishing part) of the second floor first living space 122, above one side wall surface 122a of the second floor first living space 122 (living space).

[0116] In the fifth embodiment, the second floor circulation fan intake 55D is disposed above the second floor first living space 122. If a filter is disposed above the second floor first living space 122, it is difficult to reach and maintenance work to replace the filter is difficult. In contrast, according to the configuration of the present invention, by opening the second floor maintenance door 923, maintenance work such as replacing the second floor filter 922 and cleaning the inside of the second floor intake airtight space 921A can be easily performed.

[0117] Sixth Embodiment Next, a sixth embodiment of the present invention will be described. Fig. 7 is a diagram showing a house 10A equipped with an air conditioning system 1E according to the sixth embodiment of the present invention, in which an air conditioner, a ventilator, and a switching unit are integrated into an air conditioning unit 4. The insulated section 18A of the house 10A of the sixth embodiment is similar to the insulated section 18A of the house 10A shown in FIG. 3 of the second embodiment.

[0118] The air conditioning system 1E includes an air conditioning unit 4 instead of the air conditioner 2, the ventilator 3, and the switching section 8 in the above-mentioned embodiment. In the sixth embodiment, the air conditioning unit 4 is configured by integrating the air conditioner, the ventilator, and the switching section in the above-mentioned embodiment. The air conditioning unit 4 has the cooling function and the ventilation function of the air conditioner 2 in the above-mentioned embodiment, the ventilation function of the ventilator 3, and the switching function of the switching section 8. The switching function of the switching section 8 in the above-mentioned embodiment is built into the air conditioning unit 4, and can switch the air in the house 10 introduced into the air conditioning unit 4 to either cold air introduced through the first floor side circulation fan intake 46B or warm air introduced through the second floor side circulation fan intake 55A.

[0119] The air conditioning unit 4 is disposed in the first floor piping space 131. The air conditioning system 1E is provided with a first floor circulation fan intake 46B that communicates between the air conditioning unit 4 and the first floor piping space 131. The first floor circulation fan intake 46B is disposed near the floor 16 (insulated section 18A, finishing section) below one side wall surface 112a of the first floor corridor space 112, as in FIG. 4 of the third embodiment. The first floor circulation fan intake 46B draws in air near the floor 16 below one side wall surface 112a of the first floor corridor space 112, and introduces the drawn-in air into the air conditioning unit 4.

[0120] The air conditioning system 1E also has, as components for circulating air, a first air supply chamber 71, a second air supply chamber 72, a Y-shaped pipe 73, a first exhaust chamber 74, a second exhaust chamber 75, an air supply duct L1A, an exhaust duct L2A, and a circulation intake duct L3A.

[0121] The supply air duct L1A is a piping for introducing air from outside the house 10 into the air conditioning unit 4 and supplying air heated by the heating function of the air conditioning unit 4 or air cooled by the cooling function thereof to the first floor living space 113, the second floor first living space 122, and the second floor second living space 124. The supply air duct L1A has an air conditioning unit duct L11A, a first floor introduction duct L13, a first supply air duct L14, a second supply air duct L15, a second floor introduction duct L16, a third supply air duct L17, and a fourth supply air duct L18.

[0122] The air conditioning unit duct L11A is a pipe that introduces air from outside the house 10 to the air conditioning unit 4. The configurations of the first air supply duct L14, the second air supply duct L15, the third air supply duct L17, the fourth air supply duct L18, the first air supply chamber 71, and the second air supply chamber 72 are the same as those in the first embodiment. This embodiment does not include a duct equivalent to the air conditioner introduction duct L12 of the first embodiment.

[0123] The first floor inlet duct L13 is a piping from the air conditioning unit 4 to the first air supply chamber 71. The second floor inlet duct L16 is a piping from the air conditioning unit 4 to the second air supply chamber 72.

[0124] The exhaust duct L2A is a pipe for discharging the air in the first floor wet area space 111, the air in the first floor corridor space 112, the air in the first floor living space 113, the air in the second floor storage space 121, and the air in the second floor corridor space 123 to the outside of the house 10. The exhaust duct L2A has a first floor wet area exhaust duct L21, a first floor corridor exhaust duct L22, a first floor living room exhaust duct L23, a first floor exhaust junction duct L24, a second floor storage space exhaust duct L25, a second floor corridor exhaust duct L26, a second floor exhaust junction duct L27, a total exhaust junction duct L28A, and an exhaust discharge duct L29A.

[0125] The configurations of the first floor bathroom exhaust duct L21, the first floor corridor exhaust duct L22, the first floor living room exhaust duct L23, the first floor exhaust junction duct L24, the second floor storage space exhaust duct L25, the second floor corridor exhaust duct L26, the second floor exhaust junction duct L27, the Y-pipe 73, the first exhaust chamber 74 and the second exhaust chamber 75 are the same as in the first embodiment.

[0126] The total exhaust junction duct L28A is a piping from the Y-pipe 73 to the air conditioning unit 4. The exhaust discharge duct L29A is a pipe that discharges the air discharged from the air conditioning unit 4 to the outside of the house 10.

[0127] The circulation intake duct L3A is a pipe that circulates cold air near the bottom of the insulated section 18A or warm air near the top of the insulated section 18A to the air conditioning unit 4. The circulation intake duct L3A has a second floor circulation intake duct L32A. The circulation intake duct L3A does not have the first floor circulation intake duct L31 and the common circulation intake duct L33 of the first embodiment.

[0128] The second floor circulation intake duct L32A is a piping from the second floor circulation fan intake port 55A to the air conditioning unit 4, and circulates the air taken in from the second floor circulation fan intake port 55A to the air conditioning unit 4. In the sixth embodiment, the first floor side circulation intake duct L31 and the common circulation intake duct L33 of the first embodiment are built into the air conditioning unit 4.

[0129] Next, the operation of the air conditioning system 1E of this embodiment will be described below, taking into account cases where the air conditioning system 1E of this embodiment is used in winter and in summer.

[0130] First, a case where the air conditioning system 1E is used in winter will be described. When the air conditioning system 1 is used in winter, the ventilation function and heat exchange function of the air conditioning unit 4 are operated, while the heating function is operated, and the built-in switching section is switched to the first floor air suction state.

[0131] Air from outside the house 10 is introduced into the air conditioning unit 4, and by switching the switching unit to the first floor air suction state, cold air near the bottom of the insulated section 18A is introduced through the first floor circulation fan intake port 46B. The air conditioning unit 4 heats the introduced air and the air introduced through the first floor circulation fan intake port 46B using a heating function, and supplies the air to each of the specified spaces 113, 122, 124.

[0132] Next, a case where the air conditioning system 1 is used in summer will be described. When the air conditioning system 1 is used in the summer, the ventilation function and heat exchange function of the air conditioning unit 4 are operated, while the cooling function is operated and the built-in switching section is switched to the second floor air intake state.

[0133] Air from outside the house 10 is introduced into the air conditioning unit 4, and by switching the switching unit to the second floor air suction state, air near the top of the insulated section 18 is introduced through the second floor circulation fan air intake 55A. The air conditioning unit 4 cools the introduced air and the air introduced through the second floor circulation fan air intake 55A by using its cooling function, and supplies the air to each of the predetermined spaces 113, 122, 124.

[0134] The sixth embodiment includes an air conditioning unit 4 in which the air conditioner 2, the ventilation device 3, and the switching unit 8 in the first to fifth embodiments are integrated, and the air conditioning unit 4 is disposed in the first floor piping space 131. The sixth embodiment also provides the same effects as the first to fifth embodiments.

[0135] Although a preferred embodiment of the air conditioning system of the present invention has been described above, the present invention is not limited to the above-described embodiment and can be modified as appropriate.

[0136] For example, in the above embodiment, the cold air from the bottom of the first floor is introduced into the air conditioner through the first floor circulation fan intake (first intake), or the warm air from the top of the second floor is introduced into the air conditioner through the second floor circulation fan intake (second intake), but this is not limited to this. For example, in a room of an apartment building, when the heating function is to be performed, the first intake may be located near the northernmost part of the house, and when the cooling function is to be performed, the second intake may be located near the southernmost part of the house. The vicinity of the northernmost or southernmost part of the house is preferably within a range of 1 m inward from the northernmost or southernmost part of the house, and more preferably within a range of 50 cm inward from the northernmost or southernmost part of the house. The vicinity of the northernmost or southernmost part of the house is a place where the air conditioner 2 is conventionally considered to be ineffective.

[0137] In the above embodiment, when the heating function is operated in the two-story house 10, the first floor circulation fan intake (first intake) is arranged near the bottom of the bottom floor, and the second floor circulation fan intake (second intake) is arranged near the top of the top floor, but this is not limited to this. For example, when the heating function is operated in a one-story house, a three or more story house, each floor of a multi-story house, or a room in an apartment, the first intake may be arranged near the bottom of a one-story house, the bottom floor of a multi-story house, each floor of a multi-story house, or a room in an apartment, and when the cooling function is operated, the second intake may be arranged near the bottom of a one-story house, the bottom floor of a multi-story house, each floor of a multi-story house, or a room in an apartment.

[0138] In addition, in the first embodiment, the first floor circulation fan air intake (first air intake) is located near the bottom of the insulated section 18, and the second floor circulation fan air intake (second air intake) is located near the top of the insulated section 18, but this is not limited to this. In the first embodiment, the first floor circulation fan air intake (first air intake) may be arranged near the first floor floor 16 of the house 10 which constitutes the finished surface (finishing part) located at the bottom of the living space or non-living space on the first floor, or the second floor circulation fan air intake (second air intake) may be arranged near the second floor floor 17 of the house 10 which constitutes the finished surface (finishing part) located at the bottom of the living space or non-living space on the second floor, or the air intake may be arranged near the ceiling of each space 111, 112, 113, 121, 122, 123, 124 which constitutes the uppermost finishing surface (finishing part) of each space 111, 112, 113, 121, 122, 123, 124.

[0139] In the above embodiment, the air conditioner 2 has both a heating function and a cooling function, but this is not limited to this. The air conditioner 2 may have only one of the heating function or the cooling function.

[0140] In addition, in the above embodiment, the air conditioning system 1 is configured to include the ventilation device 3, but the present invention is not limited to this, and the air conditioning system 1 may be configured without including the ventilation device 3.

[0141] In addition, in the above embodiment, the ventilation method of the ventilation device 3 is a Type 1 ventilation method in which both the supply and exhaust air are performed by a ventilation fan (mechanical fan), but this is not limited to this, and it may be a Type 3 ventilation method in which the exhaust air is performed by a ventilation fan (mechanical fan) and the supply air is natural.

[0142] Furthermore, in the above embodiment, the air conditioner 2 and the ventilation device 3 are disposed in the space between the first and second floors, but the locations where the air conditioner 2 and the ventilation device 3 are disposed are not limited. The air conditioner 2 may be disposed, for example, in the underfloor space 114 or on the floor 16, or in the attic space 125 or the upper piping space 134 on the second floor. When the air conditioner 2 is disposed on the floor 16, an air intake may be provided at the bottom of the air conditioner 2 so that cold air near the floor 16 is sucked in when heating is performed by the air conditioner 2.

[0143] In addition, in the above embodiment, the first floor side circulation intake duct L31 (maintenance duct) and the second floor side circulation intake duct L32 (maintenance duct) are indirectly connected to the air conditioner 2 via the switching unit 8 and the common circulation intake duct L33, but this is not limiting. The first floor side circulation intake duct L31 (maintenance duct) and the second floor side circulation intake duct L32 (maintenance duct) may be directly connected to the air conditioner 2. [Explanation of symbols]

[0144] 1,1B,1C,1D,1E Air conditioning system 2 Air conditioner 3. Ventilation system 4 Air Conditioning Unit 8 Switching section 9 Air conditioning maintenance structure 10,10A Housing 18,18A Insulated Section 46, 46A, 46B 1st floor circulation fan intake (1st intake) 55, 55A, 55B, 55C 2nd floor circulation fan intake (2nd intake) 91 1st floor air conditioning maintenance structure 92 2nd floor air conditioning maintenance structure 114 Underfloor space (underfloor) 125 Attic space (attic) 131 1st floor piping space (space where ducts can be placed) 133 2nd floor piping space (space where ducts can be placed) 911 1st floor airtight space for intake (airtight space for intake) 912 1st floor filter (filter) 913 1st floor maintenance door (maintenance door) 921 2nd floor airtight space for intake (airtight space for intake) 922 2nd floor filter (filter) 923 2nd floor maintenance door (maintenance door) L31 1st floor circulation intake duct (maintenance duct) L32 2nd floor circulation intake duct (maintenance duct)

Claims

1. An air conditioning system including an air conditioner that heats air in a house introduced through a first air intake or a second air intake by a heating function or cools air by a cooling function and supplies the air to the house, When the heating function is operated, the first air intake is disposed near a lowermost portion of a space surrounded by an insulated section in the house, When the cooling function is operated, the second air intake is disposed near the top of a space surrounded by an insulated section in the house. Air conditioning system.

2. When the heating function is activated, the first air intake is disposed near the bottom of the lowest floor or near the bottom of each floor when the house is a multi-story house, or near the bottom when the house is a single-story house; When the cooling function is activated, the second air intake is disposed near the top of the top floor or near the top of each floor if the house is a multi-story house, or near the top of the house if the house is a single-story house.

2. The air conditioning system of claim 1.

3. The first air intake is disposed in an insulated underfloor space inside the insulated compartment, The second air intake is disposed in an insulated attic space inside the insulated compartment.

3. An air conditioning system according to claim 1 or 2.

4. The air conditioner has both the heating function and the cooling function, a switching unit that is capable of switching so that air to be introduced into the air conditioning device is introduced through either the first air intake port or the second air intake port; An air conditioning system according to any one of claims 1 to 3.

5. The house further includes a ventilation device that introduces air outside the house into the house and exhausts air inside the house to the outside of the house, The ventilation device introduces air from outside the house into the air conditioning device, The air conditioner heats the air outside the house introduced by the ventilation device using a heating function or cools the air using a cooling function and supplies the air to the house. An air conditioning system according to any one of claims 1 to 4.

6. An air conditioning maintenance structure for performing maintenance on the air conditioning system is further provided, The air conditioning maintenance structure includes: an intake airtight space that is provided in the duct arrangement space and has airtightness; a maintenance duct having one side connected to the intake airtight space in a state where the one side is open in the intake airtight space and the other side directly or indirectly connected to the air conditioner; An air intake port arranged to communicate the airtight space for intake with a space inside the house; a filter disposed inside the intake airtight space so as to cover an opening on an end side of the maintenance duct on the intake airtight space side; A maintenance door configured to be able to open and close the intake airtight space and disposed at a position where maintenance of the filter can be performed. An air conditioning system according to any one of claims 1 to 5.

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