Floor air conditioning system

Abstract

The present invention provides a floor air conditioning system in which air is supplied from a floor space (110) to an indoor space (100) via a plurality of discharge holes (121), formed in a floor portion (120) installed between the floor space (110) and the indoor space (100), due to a pressure difference between the floor space (110) and the indoor space (100). The floor air conditioning system comprises: an air supply unit (200) for supplying air to the floor space (110); a temperature control unit (300) for controlling, by means of a heating device or a cooling device, the temperature (T) of the air supplied to the floor space (110); a lower temperature sensor (101) installed so as to measure a lower temperature (T1) of the indoor space (100); an upper temperature sensor (102) installed so as to measure an upper temperature (T2) of the indoor space (100); and a controller that controls the air supply unit (200) and the temperature control unit (300) on the basis of the lower temperature (T1) measured by the lower temperature sensor (101) and the upper temperature (T2) measured by the upper temperature sensor (102). The controller: sets a minimum air supply amount (Qmin) and a maximum air supply amount (Qmax) of the air supply unit (200) so that the pressure difference between the floor space (110) and the indoor space (100) is within a set pressure range; sets a maximum indoor temperature (Tmax) and a minimum indoor temperature (Tmin) of the indoor space (100); increases or decreases the air supply amount (Q) of the air supply unit (200) so that the temperature of the indoor space (100) is maintained within a set temperature range between the maximum indoor temperature (Tmax) and the minimum indoor temperature (Tmin) when the lower temperature (T1) measured by the lower temperature sensor (101) or the upper temperature (T2) measured by the upper temperature sensor (102) falls outside the set temperature range; and controls the temperature control unit (300) when the temperature of the indoor space (100) falls outside the set temperature range despite the increased air supply amount (Q) being equal to or greater than the maximum air supply amount (Qmax) or the decreased air supply amount (Q) being less than or equal to the minimum air supply amount (Qmin). The temperature of the indoor space can be increased or decreased by effectively combining a method that involves increasing or decreasing the air supply amount and a method that involves controlling the temperature of the supplied air using heating and cooling devices, thus making it possible to reduce energy consumption and minimize environmental damage.

Description

Underfloor air conditioning system

[0001] The present invention relates to the field of construction, and more particularly, to a floor air conditioning system.

[0002] In the past, most buildings adopted ceiling-extracted air conditioning systems, which are configured to supply heated or cooled air to indoor spaces through air ducts in the ceiling.

[0003] In the case of cooling using a ceiling-extracting air conditioning system, there is a problem that cooling efficiency is reduced because the cool air coming from the ceiling must first cool the hot air above before it can reach the residential area below 1.8 m, and further, to the location below 1.2 m to 1.5 m where people are sitting.

[0004] To solve these problems, an underfloor air distribution system (UFAD) was developed.

[0005] It supplies heated or cooled air to the room through the indoor floor side, more specifically, through the underside of the access floor.

[0006] This floor air conditioning system has the advantage of high cooling efficiency for the living area because cool air is supplied from the floor side close to where people are sitting, and can respond to changes in room partitions or furniture arrangement by simply changing the location of the floor air extraction unit on the lower side of the access floor.

[0007]

[0008] Meanwhile, in the underfloor air conditioning system, methods for raising or lowering the temperature of the indoor space include increasing or decreasing the amount of air supplied or controlling the temperature of the supplied air by a heating and cooling device. However, this has been pointed out as a problem because a specific control method for this has not been developed in the past.

[0009] The present invention was developed to solve the above problems, and its purpose is to propose a floor air conditioning system that can reduce energy consumption and minimize environmental destruction by increasing or decreasing the temperature of an indoor space through an efficient combination of a method for increasing or decreasing the amount of air supplied and a method for controlling the temperature of the supplied air by a heating or cooling device.

[0010] In order to solve the above problem, the present invention provides a floor air conditioning system that supplies air from the floor space (110) toward the indoor space (100) through a plurality of discharge holes (121) formed in a floor portion (120) installed between the floor space (110) and the indoor space (100) by a pressure difference between the floor space (110) and the indoor space (100), comprising: an air supply unit (200) that supplies air to the floor space (110); a temperature control unit (300) that controls the temperature (T) of air supplied to the floor space (110) by a heating device or a cooling device; a lower temperature sensor (101) that is installed to measure a lower temperature (T1) of the indoor space (100); an upper temperature sensor (102) that is installed to measure an upper temperature (T2) of the indoor space (100); A control unit that controls the air supply unit (200) and the temperature control unit (300) by the lower temperature (T1) measured by the lower temperature sensor (101) and the upper temperature (T2) measured by the upper temperature sensor (102);, and the control unit sets the minimum air supply amount (Qmin) and the maximum air supply amount (Qmax) of the air supply unit (200) so that the pressure difference between the floor space (110) and the indoor space (100) is within a set pressure range, sets the maximum indoor temperature (Tmax) and the minimum indoor temperature (Tmin) of the indoor space (100), and when the lower temperature (T1) measured by the lower temperature sensor (101) or the upper temperature (T2) measured by the upper temperature sensor (102) is outside the set temperature range between the maximum indoor temperature (Tmax) and the minimum indoor temperature (Tmin), first increases or decreases the air supply amount (Q) of the air supply unit (200) so that the temperature of the indoor space (100) is within the set temperature range, and when the increased air supply amount (Q) is greater than or equal to the maximum air supply amount (Qmax) or the decreased air supply amount (Q) is less than or equal to the minimum air supply amount (Qmin), However, a floor air conditioning system is proposed, characterized in that the temperature control unit (300) is controlled when the temperature of the indoor space (100) exceeds the set temperature range.

[0011] In the case of winter heating in which air of a higher temperature than the outside temperature is supplied by the above heating device, it is preferable that the control unit increases the air supply amount (Q) by the air supply unit (200) when the lower temperature (T1) measured by the lower temperature sensor (101) is lower than the minimum indoor temperature (Tmin), and increases the temperature (T) of the air supplied by the temperature control unit (300) when the increased air supply amount (Q) is higher than the maximum air supply amount (Qmax).

[0012] If the upper temperature (T2) measured by the upper temperature sensor (102) is higher than the maximum indoor temperature (Tmax), it is preferable to reduce the air supply amount (Q) by the air supply unit (200), and if the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin), it is preferable to reduce the temperature (T) of the air supplied by the temperature control unit (300).

[0013] In the case of summer cooling in which air of a lower temperature than the outside temperature is supplied by the above-mentioned cooling device, it is preferable that the control unit increases the air supply amount (Q) by the air supply unit (200) when the upper temperature (T2) measured by the upper temperature sensor (102) is higher than the maximum indoor temperature (Tmax), and reduces the temperature (T) of the air supplied by the temperature control unit (300) when the increased air supply amount (Q) is higher than the maximum air supply amount (Qmax).

[0014] If the lower temperature (T1) measured by the lower temperature sensor (101) is lower than the minimum indoor temperature (Tmin), it is preferable to reduce the air supply amount (Q) by the air supply unit (200), and if the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin), it is preferable to increase the temperature (T) of the air supplied by the temperature control unit (300).

[0015] The present invention relates to a floor air conditioning method for supplying air from a floor space (110) toward an indoor space (100) through a plurality of discharge holes (121) formed in a floor portion (120) installed between the floor space (110) and the indoor space (100) due to a pressure difference between the floor space (110) and the indoor space (100), comprising: an air supply amount setting step for setting a minimum air supply amount (Qmin) and a maximum air supply amount (Qmax) for the indoor space (100) so that the pressure difference between the floor space (110) and the indoor space (100) is within a set pressure range; a temperature range setting step for setting a maximum indoor temperature (Tmax) and a minimum indoor temperature (Tmin) of the indoor space (100) and determining a set temperature range that is a range therebetween; The present invention proposes a floor air conditioning method, characterized by including: an air supply amount control step for increasing or decreasing an air supply amount (Q) to the indoor space (100) so that the temperature of the indoor space (100) remains within the set temperature range when the lower temperature (T1) or the upper temperature (T2) of the indoor space (100) is outside the set temperature range; and an air temperature control step for increasing or decreasing the temperature (T) of air supplied to the indoor space (100) when the temperature of the indoor space (100) is outside the set temperature range even though the increased air supply amount (Q) is greater than or equal to the maximum air supply amount (Qmax) or the decreased air supply amount (Q) is less than or equal to the minimum air supply amount (Qmin).

[0016] In the case of winter heating that supplies high-temperature air compared to the outside temperature to the indoor space (100), the air supply amount control step preferably includes a step of increasing the air supply amount (Q) to the indoor space (100) when the lower temperature (T1) of the indoor space (100) is lower than the minimum indoor temperature (Tmin), and the air temperature control step preferably includes a step of increasing the temperature (T) of the air supplied to the indoor space (100) when the increased air supply amount (Q) is higher than the maximum air supply amount (Qmax).

[0017] The above air supply amount control step preferably includes a step of reducing the air supply amount (Q) to the indoor space (100) when the upper temperature (T2) of the indoor space (100) is higher than the maximum indoor temperature (Tmax), and the air temperature control step preferably includes a step of reducing the temperature (T) of the air supplied to the indoor space (100) when the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin).

[0018] In the case of summer cooling that supplies air at a lower temperature than the outside temperature to the indoor space (100), it is preferable that the air supply amount control step includes a step of increasing the air supply amount (Q) to the indoor space (100) when the upper temperature (T2) of the indoor space (100) is higher than the maximum indoor temperature (Tmax), and the air temperature control step includes a step of reducing the temperature (T) of the air supplied to the indoor space (100) when the increased air supply amount (Q) is higher than the maximum air supply amount (Qmax).

[0019] The above air supply amount control step preferably includes a step of reducing the air supply amount (Q) to the indoor space (100) when the lower temperature (T1) of the indoor space (100) is lower than the minimum indoor temperature (Tmin), and the air temperature control step preferably includes a step of increasing the temperature (T) of the air supplied to the indoor space (100) when the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin).

[0020] The present invention proposes a floor air conditioning system that can reduce energy consumption and minimize environmental destruction by increasing or decreasing the temperature of an indoor space through an efficient combination of a method for increasing or decreasing the amount of air supplied and a method for controlling the temperature of the supplied air by a heating or cooling device.

[0021] Figure 1 below illustrates an embodiment of the present invention.

[0022] Figure 1 is a diagram of the floor air conditioning system.

[0023] Figure 2 is a block diagram of a first embodiment of a floor air conditioning method.

[0024] Figure 3 is a block diagram of a second embodiment of a floor air conditioning method.

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0026] As illustrated in FIG. 1 below, the floor air conditioning system according to the present invention supplies air from the floor space (110) toward the indoor space (100) through a plurality of discharge holes (121) formed in the floor portion (120) installed between the floor space (110) and the indoor space (100) by the pressure difference between the floor space (110) and the indoor space (100).

[0027] The pressure difference between the floor space (110) and the indoor space (100) is created by a fan or pump (P) that supplies air to the floor space (110) and sucks air from the ceiling space (130).

[0028] The floor air conditioning system is configured to include an air supply unit (200), a temperature control unit (300), a lower temperature sensor (101), an upper temperature sensor (102), and a control unit.

[0029] The air supply unit (200) sucks in outside air and supplies air to the floor space (110).

[0030] The temperature control unit (300) is composed of a heating device or a cooling device and controls the temperature (T) of the air supplied to the floor space (110).

[0031] The lower temperature sensor (101) is installed at a height of about 100 mm from the floor (120) to measure the lower temperature (T1) of the indoor space (100), which is the temperature felt by the feet of the occupants.

[0032] The upper temperature sensor (102) is installed at a height of about 1100 to 1700 mm from the floor (120) to measure the upper temperature (T2) of the indoor space (100), which is the temperature felt by the occupant's face.

[0033] Since cold air, which is heavier than hot air, always stays at the bottom of the indoor space (100), the lower temperature sensor (101) measures the temperature of the coldest air in the indoor space (100), and the upper temperature sensor (102) measures the temperature of the relatively warmer air.

[0034] Accordingly, whether the temperature of the indoor space (100) is too cold is determined based on the lower temperature (T1) measured by the lower temperature sensor (101), and whether the temperature of the indoor space (100) is too hot is determined based on the upper temperature (T2) measured by the upper temperature sensor (102).

[0035] The control unit controls the air supply unit (200) and the temperature control unit (300) by the lower temperature (T1) measured by the lower temperature sensor (101) and the upper temperature (T2) measured by the upper temperature sensor (102).

[0036]

[0037] Specifically, the control unit sets the minimum air supply amount (Qmin) and the maximum air supply amount (Qmax) of the air supply unit (200) so that the pressure difference between the floor space (110) and the indoor space (100) is within the set pressure range (10 to 20 Pa).

[0038] The maximum indoor temperature (Tmax) and minimum indoor temperature (Tmin) of the indoor space (100) are set, and the range between them becomes the set temperature range.

[0039] When the lower temperature (T1) measured by the lower temperature sensor (101) or the upper temperature (T2) measured by the upper temperature sensor (102) is outside the set temperature range, the control unit controls the air supply unit (200) and the temperature control unit (300) as follows to ensure that the temperature of the indoor space (100) remains within the set temperature range.

[0040] First, prior to controlling the temperature control unit (300), the temperature of the indoor space (100) is controlled by increasing or decreasing the air supply amount (Q) of the air supply unit (200).

[0041] Since heated air is supplied in winter and cooled air is supplied in summer, the temperature of the indoor space (100) can be controlled to some extent simply by increasing or decreasing the amount of air supplied (Q).

[0042] Even though the increased air supply (Q) is greater than the maximum air supply (Qmax) or the decreased air supply (Q) is less than the minimum air supply (Qmin), the temperature control unit (300) is controlled only when the temperature of the indoor space (100) goes beyond the set temperature range.

[0043] When the increased air supply (Q) is greater than the maximum air supply (Qmax) or the decreased air supply (Q) is less than the minimum air supply (Qmin), it means that the pressure difference between the floor space (110) and the indoor space (100) goes beyond the set pressure range (10 to 20 Pa), and thus stable floor air conditioning is not achieved. In this case, the indoor temperature is no longer controlled by increasing or decreasing the air supply, but a temperature control unit (300) is used.

[0044] That is, when the temperature of the indoor space (100) does not reach the set temperature range despite an increase or decrease in the air supply amount (Q), the heating device or cooling device of the temperature control unit (300) is controlled to increase or decrease the temperature of the supplied air.

[0045] This has the effect of reducing energy consumption and minimizing environmental destruction by minimizing the operation of power-consuming heating or cooling devices.

[0046]

[0047] Below, we will explain in detail the case of winter heating (Fig. 2).

[0048] In winter, air of higher temperature than the outside temperature is basically supplied to the indoor space (100) by a heating device, and the control unit controls the air supply unit (200) and the temperature control unit (300) as follows.

[0049]

[0050] 1) When the lower temperature (T1) measured by the lower temperature sensor (101) is lower than the minimum indoor temperature (Tmin) (when the indoor temperature in winter is too low)

[0051] The fact that the lower temperature (T1) (the temperature of the cold area in the indoor space) is lower than the minimum indoor temperature (Tmin) means that the temperature of the indoor space (100) is not warm in winter, so the amount of air supplied (Q) of heating air by the air supply unit (200) is increased.

[0052] If the lower temperature (T1) of the indoor space (100) becomes higher than the minimum indoor temperature (Tmin) before the increased air supply (Q) becomes higher than the maximum air supply (Qmax), the increase in the air supply (Q) by the air supply unit (200) is stopped.

[0053] When the increased air supply amount (Q) exceeds the maximum air supply amount (Qmax), the pressure difference between the floor space (110) and the indoor space (100) goes beyond the set pressure range (10 to 20 Pa), and stable floor air conditioning is not achieved. Therefore, even though the lower temperature (T1) of the indoor space (100) does not rise above the minimum indoor temperature (Tmin), the increase in the air supply amount (Q) by the air supply unit (200) is stopped.

[0054] Instead, by increasing the temperature (T) of the air supplied by the heating device of the temperature control unit (300), the lower temperature (T1) of the indoor space (100) is increased.

[0055] An increase in the lower temperature (T1) of the indoor space (100) (the temperature of the cold area of ​​the indoor space) means that the upper temperature (T2) of the indoor space (100) (the temperature of the hot area of ​​the indoor space) naturally increases.

[0056]

[0057] 2) When the upper temperature (T2) measured by the lower temperature sensor (101) is higher than the maximum indoor temperature (Tmax) (when the indoor temperature is too high in winter)

[0058] The fact that the upper temperature (T2) (the temperature of the hot area of ​​the indoor space) is higher than the maximum indoor temperature (Tmax) means that the temperature of the indoor space (100) is excessively warm in winter, so the amount of air supplied (Q) of heating air by the air supply unit (200) is reduced.

[0059] If the upper temperature (T2) of the indoor space (100) becomes lower than the maximum indoor temperature (Tmax) before the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin), the reduction in the air supply amount (Q) by the air supply unit (200) is stopped.

[0060] When the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin), the pressure difference between the floor space (110) and the indoor space (100) goes beyond the set pressure range (10 to 20 Pa), and stable floor air conditioning is not achieved. Therefore, even though the upper temperature (T2) of the indoor space (100) does not fall below the maximum indoor temperature (Tmax), the reduction in the air supply amount (Q) by the air supply unit (200) is stopped.

[0061] Instead, the upper temperature (T2) of the indoor space (100) is reduced by reducing the temperature (T) of the air supplied by the heating device of the temperature control unit (300) (e.g., by stopping the operation of the heating device).

[0062] A decrease in the upper temperature (T2) of the indoor space (100) (temperature of a hot area of ​​the indoor space) means that the lower temperature (T1) of the indoor space (100) (temperature of a cold area of ​​the indoor space) naturally decreases.

[0063]

[0064] Below, the case of cooling in summer is explained in detail. (Fig. 3)

[0065] In the summer, air at a lower temperature than the outside temperature is basically supplied to the indoor space (100) by the air conditioning device, and the control unit controls the air supply unit (200) and the temperature control unit (300) as follows.

[0066]

[0067] 1) When the upper temperature (T2) measured by the upper temperature sensor (102) is higher than the maximum indoor temperature (Tmax) (when the indoor temperature is too high in summer)

[0068] The fact that the upper temperature (T2) (the temperature of the hot area in the indoor space) is higher than the maximum indoor temperature (Tmax) means that the temperature of the indoor space (100) is not cool in the summer, so the amount of air supplied (Q) of cooling air by the air supply unit (200) is increased.

[0069] If the upper temperature (T2) of the indoor space (100) becomes lower than the maximum indoor temperature (Tmax) before the increased air supply (Q) becomes higher than the maximum air supply (Qmax), the increase in the air supply (Q) by the air supply unit (200) is stopped.

[0070] When the increased air supply amount (Q) exceeds the maximum air supply amount (Qmax), the pressure difference between the floor space (110) and the indoor space (100) goes beyond the set pressure range (10 to 20 Pa), and stable floor air conditioning is not achieved. Therefore, even though the upper temperature (T2) of the indoor space (100) does not fall below the maximum indoor temperature (Tmax), the increase in the air supply amount (Q) by the air supply unit (200) is stopped.

[0071] Instead, the upper temperature (T2) of the indoor space (100) is reduced by reducing the temperature (T) of the air supplied by the cooling device of the temperature control unit (300).

[0072] A decrease in the upper temperature (T2) of the indoor space (100) (the temperature of the hot area of ​​the indoor space) means that the lower temperature (T1) (the temperature of the cold area of ​​the indoor space) naturally decreases.

[0073]

[0074] 2) When the lower temperature (T1) measured by the lower temperature sensor (101) is lower than the minimum indoor temperature (Tmin) (when the indoor temperature in summer is too low)

[0075] The fact that the lower temperature (T1) (the temperature of the cold area in the indoor space) is lower than the minimum indoor temperature (Tmin) means that the temperature of the indoor space (100) is excessively low in the summer, so the amount of air supplied (Q) of cooling air by the air supply unit (200) is reduced.

[0076] If the lower temperature (T1) of the indoor space (100) becomes higher than the minimum indoor temperature (Tmin) before the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin), the reduction in the air supply amount (Q) by the air supply unit (200) is stopped.

[0077] When the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin), the pressure difference between the floor space (110) and the indoor space (100) goes beyond the set pressure range (10 to 20 Pa), and stable floor air conditioning is not achieved. Therefore, even though the lower temperature (T1) of the indoor space (100) does not rise above the minimum indoor temperature (Tmin), the reduction in the air supply amount (Q) by the air supply unit (200) is stopped.

[0078] Instead, by increasing the temperature (T) of the air supplied by the cooling device of the temperature control unit (300) (e.g., by stopping the cooling device), the lower temperature (T1) of the indoor space (100) is increased.

[0079] An increase in the lower temperature (T1) of the indoor space (100) (the temperature of the cold area of ​​the indoor space) means that the upper temperature (T2) (the temperature of the hot area of ​​the indoor space) naturally increases.

[0080]

[0081] Meanwhile, the floor air conditioning method according to the present invention relates to a method of supplying air from the floor space (110) toward the indoor space (100) through a plurality of discharge holes (121) formed in a floor portion (120) installed between the floor space (110) and the indoor space (100) by the pressure difference between the floor space (110) and the indoor space (100).

[0082] This is done through the following process:

[0083] The minimum air supply amount (Qmin) and maximum air supply amount (Qmax) for the indoor space (100) are set so that the pressure difference between the floor space (110) and the indoor space (100) is within the set pressure range. (Air supply amount setting step)

[0084] The maximum indoor temperature (Tmax) and minimum indoor temperature (Tmin) of the indoor space (100) are set, and the set temperature range (appropriate temperature range) between them is determined. (Temperature range setting step)

[0085] When the lower temperature (T1) or upper temperature (T2) of the indoor space (100) is outside the set temperature range, the amount of air supplied (Q) to the indoor space (100) is increased or decreased to ensure that the temperature of the indoor space (100) is within the set temperature range. (Air supply amount control step)

[0086] When the temperature of the indoor space (100) is outside the set temperature range even though the increased air supply (Q) is greater than or equal to the maximum air supply (Qmax) or the decreased air supply (Q) is less than or equal to the minimum air supply (Qmin), the temperature (T) of the air supplied to the indoor space (100) is increased or decreased (air temperature control step).

[0087]

[0088] Below, the floor air conditioning method for winter heating is described in detail. (Figure 2)

[0089] In winter, air that is hotter than the outside temperature is basically supplied to the indoor space (100).

[0090]

[0091] 1) When the lower temperature (T1) is lower than the minimum indoor temperature (Tmin) (when the indoor temperature is too low in winter)

[0092] The fact that the lower temperature (T1) (the temperature of the cold area in the indoor space) is lower than the minimum indoor temperature (Tmin) means that the temperature of the indoor space (100) is not warm in winter, so the amount of air supplied (Q) of heating air to the indoor space (100) is increased.

[0093] If the lower temperature (T1) of the indoor space (100) becomes higher than the minimum indoor temperature (Tmin) before the increased air supply (Q) becomes higher than the maximum air supply (Qmax), the increase in the air supply (Q) to the indoor space (100) is stopped.

[0094] When the increased air supply amount (Q) exceeds the maximum air supply amount (Qmax), the pressure difference between the floor space (110) and the indoor space (100) exceeds the set pressure range (10 to 20 Pa), so that stable floor air conditioning is not achieved. Therefore, even though the lower temperature (T1) of the indoor space (100) does not rise above the minimum indoor temperature (Tmin), the increase in the air supply amount (Q) to the indoor space (100) is stopped.

[0095] Instead, by increasing the temperature (T) of the air supplied to the indoor space (100), the lower temperature (T1) of the indoor space (100) is increased.

[0096] An increase in the lower temperature (T1) of the indoor space (100) (the temperature of the cold area of ​​the indoor space) means that the upper temperature (T2) of the indoor space (100) (the temperature of the hot area of ​​the indoor space) naturally increases.

[0097]

[0098] 2) When the upper temperature (T2) is higher than the maximum indoor temperature (Tmax) (when the indoor temperature is too high in winter)

[0099] The fact that the upper temperature (T2) (the temperature of the hot area of ​​the indoor space) is higher than the maximum indoor temperature (Tmax) means that the temperature of the indoor space (100) is excessively warm in winter, so the amount of air supplied (Q) of heating air to the indoor space (100) is reduced.

[0100] If the upper temperature (T2) of the indoor space (100) becomes lower than the maximum indoor temperature (Tmax) before the reduced air supply (Q) becomes lower than the minimum air supply (Qmin), the reduction in the air supply (Q) to the indoor space (100) is stopped.

[0101] When the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin), the pressure difference between the floor space (110) and the indoor space (100) goes beyond the set pressure range (10 to 20 Pa), and stable floor air conditioning is not achieved. Therefore, even though the upper temperature (T2) of the indoor space (100) does not fall below the maximum indoor temperature (Tmax), the reduction in the air supply amount (Q) to the indoor space (100) is stopped.

[0102] Instead, by reducing the temperature (T) of the air supplied to the indoor space (100) (e.g., by stopping the operation of the heating device), the upper temperature (T2) of the indoor space (100) is reduced.

[0103] A decrease in the upper temperature (T2) of the indoor space (100) (temperature of a hot area of ​​the indoor space) means that the lower temperature (T1) of the indoor space (100) (temperature of a cold area of ​​the indoor space) naturally decreases.

[0104]

[0105] Below, the floor air conditioning method for summer cooling is described in detail. (Figure 3)

[0106] In the summer, air of lower temperature than the outside temperature is basically supplied to the indoor space (100).

[0107]

[0108] 1) When the upper temperature (T2) is higher than the maximum indoor temperature (Tmax) (when the indoor temperature is too high in summer)

[0109] The fact that the upper temperature (T2) (the temperature of the hot area in the indoor space) is higher than the maximum indoor temperature (Tmax) means that the temperature of the indoor space (100) is not cool in the summer, so the amount of air supplied (Q) of cooling air to the indoor space (100) is increased.

[0110] If the upper temperature (T2) of the indoor space (100) becomes lower than the maximum indoor temperature (Tmax) before the increased air supply (Q) becomes higher than the maximum air supply (Qmax), the increase in the air supply (Q) to the indoor space (100) is stopped.

[0111] When the increased air supply amount (Q) exceeds the maximum air supply amount (Qmax), the pressure difference between the floor space (110) and the indoor space (100) goes beyond the set pressure range (10 to 20 Pa), and stable floor air conditioning is not achieved. Therefore, even though the upper temperature (T2) of the indoor space (100) does not fall below the maximum indoor temperature (Tmax), the increase in the air supply amount (Q) to the indoor space (100) is stopped.

[0112] Instead, by reducing the temperature (T) of the air supplied to the indoor space (100), the lower temperature (T1) of the indoor space (100) is reduced.

[0113] A decrease in the lower temperature (T1) of the indoor space (100) (the temperature of the cold area of ​​the indoor space) means that the upper temperature (T2) (the temperature of the hot area of ​​the indoor space) naturally decreases.

[0114]

[0115] 2) When the lower temperature (T1) is lower than the minimum indoor temperature (Tmin) (when the indoor temperature is too low in summer)

[0116] The fact that the lower temperature (T1) (the temperature of the cold area in the indoor space) is lower than the minimum indoor temperature (Tmin) means that the temperature of the indoor space (100) is excessively low in the summer, so the amount of air supplied (Q) of cooling air to the indoor space (100) is reduced.

[0117] If the lower temperature (T1) of the indoor space (100) becomes higher than the minimum indoor temperature (Tmin) before the reduced air supply (Q) becomes lower than the minimum air supply (Qmin), the reduction in the air supply (Q) to the indoor space (100) is stopped.

[0118] When the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin), the pressure difference between the floor space (110) and the indoor space (100) goes beyond the set pressure range (10 to 20 Pa), and stable floor air conditioning is not achieved. Therefore, even though the lower temperature (T1) of the indoor space (100) does not rise above the minimum indoor temperature (Tmin), the reduction in the air supply amount (Q) to the indoor space (100) is stopped.

[0119] Instead, by increasing the temperature (T) of the air supplied by the cooling device of the temperature control unit (300) (e.g., by stopping the cooling device), the lower temperature (T1) of the indoor space (100) is increased.

[0120] An increase in the lower temperature (T1) of the indoor space (100) (the temperature of the cold area of ​​the indoor space) means that the upper temperature (T2) (the temperature of the hot area of ​​the indoor space) naturally increases.

[0121]

[0122] The above is only a description of some of the preferred embodiments that can be implemented by the present invention, and as is well known, the scope of the present invention should not be construed as being limited to the above embodiments, and the technical idea of ​​the present invention described above and the technical idea that shares its basis are all included in the scope of the present invention.

[0123] *** Explanation of symbols ***

[0124] 100: Indoor space 101: Lower temperature sensor

[0125] 102: Upper temperature sensor 110: Floor space

[0126] 120: Bottom 121: Discharge hole

[0127] 200: Air supply section 300: Temperature control section

[0128] Q: Air supply Qmax: Maximum air supply

[0129] Qmin: Minimum air supply T: Temperature of supplied air

[0130] T1: Lower temperature T2: Upper temperature

[0131] Tmax: Maximum indoor temperature Tmin: Minimum indoor temperature

Claims

1. In a floor air conditioning system that supplies air from the floor space (110) toward the indoor space (100) through a plurality of discharge holes (121) formed in a floor portion (120) installed between the floor space (110) and the indoor space (100) due to the pressure difference between the floor space (110) and the indoor space (100), An air supply unit (200) that supplies air to the above floor space (110); A temperature control unit (300) that controls the temperature (T) of air supplied to the floor space (110) by a heating device or a cooling device; A lower temperature sensor (101) installed to measure the lower temperature (T1) of the above indoor space (100); An upper temperature sensor (102) installed to measure the upper temperature (T2) of the above indoor space (100); A control unit that controls the air supply unit (200) and the temperature control unit (300) by the lower temperature (T1) measured by the lower temperature sensor (101) and the upper temperature (T2) measured by the upper temperature sensor (102); The above control unit, In order to ensure that the pressure difference between the floor space (110) and the indoor space (100) is within the set pressure range, the minimum air supply amount (Qmin) and the maximum air supply amount (Qmax) of the air supply unit (200) are set, Set the maximum indoor temperature (Tmax) and minimum indoor temperature (Tmin) of the above indoor space (100), In case the lower temperature (T1) measured by the lower temperature sensor (101) or the upper temperature (T2) measured by the upper temperature sensor (102) is outside the set temperature range between the maximum indoor temperature (Tmax) and the minimum indoor temperature (Tmin), in order to ensure that the temperature of the indoor space (100) is within the set temperature range, First, increase or decrease the air supply amount (Q) of the air supply unit (200), A floor air conditioning system characterized in that the temperature control unit (300) is controlled when the temperature of the indoor space (100) deviates from the set temperature range even though the increased air supply amount (Q) is greater than or equal to the maximum air supply amount (Qmax) or the decreased air supply amount (Q) is less than or equal to the minimum air supply amount (Qmin).

2. In paragraph 1, In the case of winter heating, which supplies air of higher temperature than the outside temperature by the above heating device, The above control unit, If the lower temperature (T1) measured by the lower temperature sensor (101) is lower than the minimum indoor temperature (Tmin), the air supply amount (Q) by the air supply unit (200) is increased, A floor air conditioning system characterized in that the temperature (T) of the air supplied by the temperature control unit (300) is increased when the increased air supply amount (Q) is greater than the maximum air supply amount (Qmax).

3. In paragraph 2, If the upper temperature (T2) measured by the upper temperature sensor (102) is higher than the maximum indoor temperature (Tmax), the air supply amount (Q) by the air supply unit (200) is reduced, A floor air conditioning system characterized in that the temperature (T) of the air supplied by the temperature control unit (300) is reduced when the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin).

4. In paragraph 1, In the case of summer cooling, which supplies air at a lower temperature than the outside temperature by the above cooling device, The above control unit, If the upper temperature (T2) measured by the upper temperature sensor (102) is higher than the maximum indoor temperature (Tmax), the air supply amount (Q) by the air supply unit (200) is increased, A floor air conditioning system characterized in that the temperature (T) of the air supplied by the temperature control unit (300) is reduced when the increased air supply amount (Q) exceeds the maximum air supply amount (Qmax).

5. In paragraph 4, If the lower temperature (T1) measured by the lower temperature sensor (101) is lower than the minimum indoor temperature (Tmin), the air supply amount (Q) by the air supply unit (200) is reduced, A floor air conditioning system characterized in that the temperature (T) of the air supplied by the temperature control unit (300) is increased when the reduced air supply amount (Q) becomes lower than the minimum air supply amount (Qmin).

6. In a floor air conditioning method for supplying air from the floor space (110) to the indoor space (100) through a plurality of discharge holes (121) formed in the floor portion (120) installed between the floor space (110) and the indoor space (100) due to the pressure difference between the floor space (110) and the indoor space (100), An air supply amount setting step for setting the minimum air supply amount (Qmin) and the maximum air supply amount (Qmax) for the indoor space (100) so that the pressure difference between the floor space (110) and the indoor space (100) is within a set pressure range; A temperature range setting step for setting the maximum indoor temperature (Tmax) and minimum indoor temperature (Tmin) of the above indoor space (100) and determining a set temperature range between them; An air supply amount control step for increasing or decreasing the amount of air supplied to the indoor space (100) to ensure that the temperature of the indoor space (100) remains within the set temperature range when the lower temperature (T1) or upper temperature (T2) of the indoor space (100) is outside the set temperature range; An air temperature control step for increasing or decreasing the temperature (T) of air supplied to the indoor space (100) when the temperature of the indoor space (100) is outside the set temperature range even though the increased air supply amount (Q) is greater than or equal to the maximum air supply amount (Qmax) or the decreased air supply amount (Q) is less than or equal to the minimum air supply amount (Qmin); A floor air conditioning method characterized by including:

7. In paragraph 6, In the case of winter heating that supplies air of higher temperature than the outside temperature to the above indoor space (100), The above air supply control step is, If the lower temperature (T1) of the indoor space (100) is lower than the minimum indoor temperature (Tmin), a step of increasing the air supply amount (Q) to the indoor space (100) is included; The above air temperature control step is, When the increased air supply amount (Q) is greater than the maximum air supply amount (Qmax), a step of increasing the temperature (T) of the air supplied to the indoor space (100); A floor air conditioning method characterized by including:

8. In paragraph 7, The above air supply control step is, If the upper temperature (T2) of the indoor space (100) is higher than the maximum indoor temperature (Tmax), a step of reducing the amount of air supplied (Q) to the indoor space (100) is included; The above air temperature control step is, When the reduced air supply amount (Q) becomes less than or equal to the minimum air supply amount (Qmin), a step of reducing the temperature (T) of the air supplied to the indoor space (100); A floor air conditioning method characterized by including:

9. In paragraph 6, In the case of summer cooling that supplies air at a lower temperature than the outside temperature to the above indoor space (100), The above air supply control step is, If the upper temperature (T2) of the indoor space (100) is higher than the maximum indoor temperature (Tmax), a step of increasing the air supply amount (Q) to the indoor space (100) is included; The above air temperature control step is, When the increased air supply amount (Q) is greater than the maximum air supply amount (Qmax), a step of reducing the temperature (T) of the air supplied to the indoor space (100); A floor air conditioning method characterized by including:

10. In paragraph 9, The above air supply control step is, If the lower temperature (T1) of the indoor space (100) is lower than the minimum indoor temperature (Tmin), a step of reducing the amount of air supplied (Q) to the indoor space (100) is included; The above air temperature control step is, When the reduced air supply amount (Q) becomes less than or equal to the minimum air supply amount (Qmin), a step of increasing the temperature (T) of the air supplied to the indoor space (100); A floor air conditioning method characterized by including:

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