JP2001208394A - Air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an air-conditioning system of a simple and low-cost constitution by allowing comfort and energy saving, to be compatible by utilizing a thermal storage in a building skeleton. SOLUTION: A room temperature is detected by a temperature sensor 15a, and a floor temperature is detected by a temperature sensor 15c. A controller 17 calculates a sensible temperature from the detected room temperature and the floor temperature. The calculated sensible temperature is compared with the preset room temperature by a user, and an air supply means 2, a heat exchanger 3 are controlled to be stopped or started, or capacity is controlled, so that the sensible temperature becomes the same as the indoor temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-story building, in which an air conditioner is arranged in a space above a ceiling formed between a ceiling of the floor and an upper floor slab, and the space above the ceiling is used at midnight power hours. The present invention relates to an air conditioning system for storing air in a building of a multi-story building by air conditioning.

[0002]

2. Description of the Related Art FIG. 11 shows, for example, Japanese Patent Application Laid-Open No. 11-8307.
It is a block diagram of the conventional air-conditioning system shown in No. 9 and shows a frame thermal storage air-conditioning system. In the figure, an in-ceiling air conditioner 54 is arranged in a space 53 above the ceiling formed between a ceiling 51C of the floor 51 and an upper floor slab 52A in a multi-story building 50.

[0003] On the outlet side of the air conditioner 54, a ceiling 51C is provided.
Air duct 56 communicating with air outlet 57 provided in
And the ventilation path switch 55 are connected. Ventilation path switch 5
5 switches the ventilation path of the conditioned air blown out from the air conditioner 54 to the room on the floor 51 or the space 53 above the ceiling. The air inlet 5 is provided on the ceiling 51C.
8 are provided.

Next, the operation will be described. First, in a normal air-conditioning operation, for example, in a daytime cooling operation other than the midnight power time zone, the ventilation path by the ventilation path switch 55 is connected to the floor 51.
Switch to the room. The indoor air on the floor 51 flows into the space 53 above the ceiling from the air inlet 58 and is sucked from the suction side of the air conditioner 54, and is condensed and decompressed by the outdoor unit (not shown) and is condensed by the air conditioner 54 After being cooled by the introduced refrigerant, it is returned from the air outlet 57 to the floor 51 via the air duct 56 to cool the room.

On the other hand, in the midnight power time zone from 22:00 at night to 8:00 in the next morning, the ventilation path by the ventilation path switch 55 is switched to the space 53 above the ceiling. Thereby, the air in the space above the ceiling 53 is sucked from the suction side of the air conditioner 54,
After being condensed and decompressed by an outdoor unit (not shown) and cooled by a refrigerant guided to the air conditioner 54, the space 53
To store the cold heat in the frame of the multi-story building 50, mainly the upper floor slab 52A.

[0006] Such a building thermal storage air-conditioning system is known to be able to use inexpensive midnight power and to lead to a leveling of power consumption day and night. Further, when heat is stored in the skeleton located closest to the user on the upper floor 52 during heating, floor heating is performed, so that the user may be able to spend comfortably.

[0007]

However, the conventional air-conditioning system as described above does not have a means for detecting the indoor environment, and radiates heat stored in the frame of the multi-story building 50 more than necessary. The additional operation by the air conditioner 54 increases, and there is a problem that it is impossible to achieve both comfort and energy saving.

In addition, the sensible heat is stored in the frame of the multi-story building 50, and there is no countermeasure against humidity during cooling, and there is a problem that the comfort is impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air-conditioning system having a simple and inexpensive configuration that achieves both comfort and energy saving.

[0010]

In the air conditioning system according to the present invention, the indoor heat exchanger, the blowing means, the direction of blowing the ventilation from the heat exchanger by the blowing means to the building body, and the building interior An air conditioner that has ventilation switching means for switching to any one of the directions of blowing air to the building and stores heat in the building body, an indoor air temperature detecting means for detecting the air temperature in the building room, and a building body having the building heat stored therein Building temperature detecting means for detecting the temperature of the building, body temperature calculating means for calculating the body temperature based on the air temperature by the indoor air temperature detecting means and the building temperature by the building body temperature detecting means, and the body temperature calculating Control means for controlling the air conditioner so that the sensible temperature of the means becomes the set temperature.

[0011] Further, there is provided an indoor heat exchanger, a ventilation means, and ventilation switching means for switching the direction of the ventilation from the heat exchanger to the building frame or the direction of blowing the ventilation from the heat exchanger into the building room. An air conditioner that stores heat in a building body; an indoor air temperature detecting unit that detects an air temperature in a building room; an intake air temperature detecting unit that detects an intake air temperature of the heat exchanger; Building skeleton temperature inference means for inferring the temperature of the building skeleton whose skeleton is stored from the intake air temperature of the heat exchanger by the air temperature detection means and the indoor air temperature by the indoor air temperature detection means, and the indoor air temperature detection means Temperature calculating means for calculating the temperature based on the air temperature and the building temperature by the building temperature estimating means, and the temperature detected by the temperature calculating means. In which a control means for controlling the air conditioner so that the temperature.

In the heating operation, if the air temperature by the indoor air temperature detecting means changes for a predetermined time in a state higher than the building temperature by the building temperature detecting means or the building temperature estimating means, This is to increase the amount of air blown by the air blowing means.

When the indoor air temperature detected by the indoor air temperature detecting means does not reach the set temperature, the heat from the heat exchanger of the air conditioner is sent into the building room by the blowing means. When the indoor air temperature has reached the set temperature, the heat from the building frame is sent into the building room by the blowing means.

Further, when the air conditioner is operated after cooling and storing heat in the building frame, the amount of air blown by the blowing means is increased.

[0015] Further, a temperature detecting means near the building body for detecting a temperature near the building body, a humidity detecting means near the building body for detecting humidity near the building body, and a humidity detecting means near the building body. Dew point temperature calculating means for calculating a dew point temperature based on the humidity and the temperature near the building skeleton by the building skeleton near temperature detecting means, the building skeleton temperature detecting means or the building skeleton temperature inferring means by the building skeleton temperature inferring means The control unit controls the heat exchanger or the blowing unit of the air conditioner so that the temperature becomes equal to or higher than the dew point temperature of the dew point temperature calculating unit.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a configuration diagram of an air conditioning system according to Embodiment 1 of the present invention, and FIG. 2 is a diagram showing a relationship between a room temperature and an average radiant temperature of a PMV (report of predicted average thermal sensation) during a heating operation of the air conditioning system. FIG. 3 is a diagram showing the relationship between the sensible temperature and the room temperature and floor surface temperature of the air conditioning system.

In the figure, a room air conditioner 1 is provided in a space in a ceiling 12 formed between a ceiling 13 of the floor and an upper floor slab (building body) 10 in a multi-story building.
(Hereinafter, referred to as an air conditioner 1). Reference numeral 11 denotes a room indicating a space to be air-conditioned. The air conditioner 1 includes a blower 2 such as a blower, a heat exchanger 3, and a ventilation switch 4 such as a damper. The air conditioner suction port 8 and a body directed from the ventilation switch 4 toward the slab 10. The side outlet 5 and the other side are installed on the ceiling 13 via the duct 6 and connected to the indoor side outlet 7 directed toward the room 11. Ceiling 1
3, a suction port 9 for guiding air from the room 11 to the ceiling 12 is provided.

Reference numeral 15a denotes a temperature sensor for detecting the temperature of the room 11, and 15b denotes a temperature sensor 1 for detecting the temperature behind the ceiling.
5b and 15c are temperature sensors installed on the upper surface of the slab 10 to detect the floor surface temperature, and 15d are installed on the lower surface of the slab 10 and detect the temperature below the slab. 16a is a humidity sensor for detecting the humidity of the room 11,
16b is a humidity sensor for detecting the humidity in the ceiling 12, 1
Reference numeral 7 denotes a controller that controls the blowing unit 2, the heat exchanger 3, and the ventilation switching unit 4 based on the input from each sensor.

Next, the operation will be described. The heating operation will be described. During the heat storage operation in the midnight power time zone, the air blowing means 2 is operated to suck air from the air conditioner suction port 8,
The air is heated by the heat of condensation of the refrigerant in the heat exchanger 3 or the sensible heat of the hot water to become hot air, and the ventilation switching means 4 opens the skeleton side outlet 5 side and closes the duct 6 side, so that the hot air is The slab 10 is blown out from the skeleton side outlet 5 to the slab 10 to store heat.

On the other hand, during the air-conditioning operation performed during the daytime other than the midnight power hours, the air blowing means 2 is operated and the heat exchanger 3 is operated.
Is stopped, and the ventilation switching means 4 closes the skeleton side outlet 5 side and opens the duct 6 side. As a result, the air in the ceiling 12 warmed by the stored slab 10 is sucked in from the air conditioner suction port 8, passes through the duct 6, and is blown out to the room 11 from the air outlet 7. Here, when the room temperature detected by the temperature sensor 15a does not reach the room temperature preset by the user (the room temperature desired by the user, hereinafter referred to as the set temperature), that is, the temperature of the slab 10 has decreased. In such a case, the heat exchanger 3 is operated to perform the reheating operation.

In the heating operation, heat is stored in the upper floor slab 10, so that the floor surface temperature inevitably rises, and the effect of floor heating is obtained. FIG. 2 shows a PMV (predicted average thermal sensation report) with respect to the room temperature and the average radiation temperature during the heating operation.
Clothing amount, activity amount, humidity,
The average wind speed is fixed. According to FIG. 2, the average radiation temperature is 1 de.
If g is higher, the same PMV value is exhibited even when the room temperature is lower by 1 deg, and the same sensation can be obtained.

Therefore, PMV where the average radiation temperature = room temperature
Can be rewritten into the sensible temperature, the sensible temperature becomes as follows. Sensible temperature = room temperature × 0.5 + average radiation temperature × 0.5 (1) Here, the average radiation temperature is the average temperature of the floor surface, the ceiling surface, and the wall surface. In the cooling operation, the average radiant temperature may be used as it is, but in the heating operation, the floor surface temperature becomes important among the temperatures constituting the average radiant temperature from the viewpoint of head and foot heat. FIG. 3 shows the sensible temperature with respect to the room temperature and the floor surface temperature. Even if the room temperature is the same, if the floor surface temperature is high, the occupants can feel the sensible temperature higher than the room temperature due to the effect of the radiant heat and the conduction heat from the floor. .

Therefore, the room temperature is detected by the temperature sensor 15a, and the floor surface temperature is detected by the temperature sensor 15c. The relationship of the above equation (1) is stored in the controller 17 in advance, and the controller 17 calculates the sensed temperature from the detected room temperature and floor surface temperature. Here, in the case of the heating operation, the average radiant temperature in Expression (1) is replaced with the floor surface temperature to calculate the sensible temperature.

The calculated perceived temperature is compared with the set temperature, and the blower means 2 and the heat exchanger 3 are controlled to start and stop or to control the capacity so that the perceived temperature is equal to the set temperature. Although the above-mentioned sensible temperature has been obtained from the PMV, another comfort index such as a standard effective temperature may be used.

As described above, according to the first embodiment, since both the room temperature and the floor surface temperature are detected, the sensible temperature is calculated, and the sensible temperature is controlled to be constant, the fluctuation of the sensible temperature is small. A heating space with high comfort can be realized, and when the floor surface temperature is high in the heating operation, the room temperature is controlled to be lower, so that a highly energy-saving operation can be performed without waste due to overheating.

Also, in the cooling operation, since both the room temperature and the average radiant temperature are detected and the sensible temperature is controlled to be constant, a cooling space with high comfort can be realized, and when the average radiant temperature is low, the room temperature is raised. Since the control is performed, an operation with high energy saving can be performed without waste due to excessive cooling.

Embodiment 2 FIG. 4 is a diagram showing a temporal change of a temperature distribution inside a slab of an air conditioning system according to Embodiment 2 of the present invention, and FIG. 5 is a time diagram of a temperature inside a ceiling and a temperature of a floor surface of the air conditioning system. It is a figure showing a change. The configuration diagram of the air conditioning system is the same as that of FIG.

Next, the operation will be described. First, FIG.
Indicates a temporal change of the internal temperature distribution of the slab 10, T1 is the floor surface temperature, T7 is the temperature under the slab, and 5:00 to 8: 0.
3 hours until 0, heat storage operation time zone, 8:00 to 20:00
Up to the air conditioning operation time zone. During the heat storage operation time, the temperature under the slab rapidly rises, and a temperature distribution is formed inside the slab. During the air-conditioning operation time zone, 8:00 to 9:
Although the temperature distribution is large at 00, the temperature distribution inside the slab is scarcely seen after 9:00, and the temperature gradually drops at almost the same temperature.

For the heating operation, it is necessary to measure the floor surface temperature by the temperature sensor 15c installed on the slab 10 as shown in FIG. 1, but in the case of an office building, the temperature sensor 15c is determined by the contents such as desks and chairs. Is often difficult to install. Therefore, according to the temperature distribution shown in FIG.
If it is difficult to install the temperature sensor 15c of the slab 10, the floor temperature can be substituted by measuring the temperature under the slab by the temperature sensor 15d near the air conditioner 1.

FIG. 5 shows a temporal change of the floor surface temperature by the temperature sensor 15c and the ceiling temperature by the suction temperature sensor 15b of the air conditioner 1. Although there is a slight difference in the temperature distribution between the two, there is a difference in the floor temperature. As the temperature changes, the temperature of the ceiling changes as well. Therefore, the suction temperature is set to the temperature sensor 1
5b, the floor surface temperature is inferred by multiplying the correction coefficient from the room temperature.

For example, when cooling, floor surface temperature = room temperature−A × (room temperature−suction temperature) where A is a constant (= 2.5) during heating floor surface temperature = room temperature + B × (suction temperature−room temperature) , B are constants (= 4.0), and can be simply expressed as in these equations.

Next, for the cooling operation, the inference of the floor surface temperature is performed in the same manner as described above, and the ceiling surface temperature may be directly attached to the ceiling 13 by a temperature sensor. Suction air temperature and temperature sensor 15
The average value is calculated from the room temperature according to a to infer the ceiling surface temperature.

As described above, according to the second embodiment, the floor surface temperature can be substituted by the measurement of the temperature under the slab by the temperature sensor 15d, and the floor surface temperature can be detected without the temperature sensor 15c. Further, the floor surface temperature can be inferred by measuring the temperature sensor 15b and multiplying it by a correction coefficient. Further, the average value is calculated from the intake air temperature by the temperature sensor 15b and the room temperature by the temperature sensor 15a, and the ceiling surface temperature is calculated. , The temperature sensor 15c,
15d becomes unnecessary, and the calculation of the sensible temperature can be realized with an inexpensive configuration.

Embodiment 3 FIG. 6 is a diagram showing the relationship between the height from the floor and the room temperature distribution in the air-conditioning system according to Embodiment 3 of the present invention. The configuration diagram of the air conditioning system is the same as that of FIG.

Next, the operation will be described. For the heating operation, the sensible temperature constant control using the floor heating effect is performed as in the first embodiment, but the temperature of the slab 10 decreases with the lapse of time from the start of air conditioning, particularly from evening to night. When the heat storage time is short and the outside air temperature is low and the air conditioning load is large, the temperature of the slab 10 drops significantly.

FIG. 6 shows the room temperature distribution with respect to the height from the floor in the room. For example, when the height from the floor is 2.5 m, a temperature difference of 10 ° C. or more (steady state in the figure) is generated. Sometimes. Also, when the temperature of the slab 10 decreases,
Even if the additional operation is performed by the air conditioner 1 so as to reach the set temperature, the temperature in the upper part of the room becomes higher, but the vicinity of the floor surface becomes lower, and a vertical temperature distribution is formed, resulting in an uncomfortable living environment.

Therefore, similarly to the first embodiment, the room temperature and the floor surface temperature are detected by the temperature sensor 15a and the temperature sensor 15c, the sensory temperature is calculated by the controller 17, and the temperature is compared with the set temperature. Start / stop control of the heat exchanger 3,
Alternatively, capacity control is performed. Therefore, when the condition of (room temperature> floor surface temperature) continues for a certain period of time, the air volume of the blower 2 is increased from a predetermined value during normal operation, and the indoor air circulation operation is performed. The relationship between the circulation operation time and the air volume of the blowing means 2 is set in the controller 17 in advance based on the volume of the room 11.

For example, the following equation shows a circulation operation time for circulating room air n times. T = nV / Q [min] Here, operation time: T [min] Indoor volume: V Ventilation amount: Q [m ³ / min]

Therefore, the temperature distribution after circulation shown in FIG. 6 is obtained by circulating n = 0.5 times (for example, T =
2.8 [min], V = 90 [m ³ ], Q = 16 [m ³ / min]), and as shown in FIG. It can be seen that it has been resolved.
Therefore, in the above equation, the circulation operation time is set to n = 0.5 or more, and the calculated operation time T may be set by applying a predetermined room volume and air flow rate.

As described above, according to the third embodiment, in the heating operation, the slab temperature is significantly reduced due to a large air-conditioning load, etc., and when the room temperature is high and the floor surface temperature is low, the ventilation Since the circulation operation of the indoor air is performed with the air volume of the means 2 being equal to or more than the predetermined value of the normal operation, the vertical temperature distribution is improved and a comfortable space can be realized.
In the above embodiment, the air conditioning system having the configuration of the first embodiment has been described. However, it goes without saying that the same applies to the air conditioning system of the second embodiment.

Embodiment 4 FIG. FIG. 7 is a diagram showing a change over time in room temperature during the cooling operation of the air-conditioning system according to Embodiment 4 of the present invention. The configuration diagram of the air conditioning system is the same as that of FIG. In the figure, a temperature range of ± ΔTm is set with respect to a set temperature Tt, and the room temperature is controlled within this temperature range. The state of A1 is a state where the air conditioner 1 is operating (thermo ON), and the state of A2 is a state where the air conditioner 1 is stopped.

Next, the effective use of the amount of heat stored in the slab 10 will be described. The controller 17 calculates the time change ΔTr / Δt of the room temperature Tr detected by the temperature sensor 15a, and controls the room temperature in the following cases. The ventilation side switching means 4 closes the skeleton side outlet 5 side, and the duct 6
Open side.

In the state of A1 (thermo ON), case 1 ΔTr / Δt <0, the air blowing means 2 of the air conditioner 1 is ON, and the heat exchanger 3 is OFF. Case 2 ΔTr / Δt> 0. Case 3 in the state of A2 (thermo OFF), the blower means 2 of the air conditioner 1 is ON, and the heat exchanger 3 is ON. OFF Case 4 When ΔTr / Δt> 0 Blowing means 2 of air conditioner 1 is ON, and heat exchanger 3 is OFF

Case 1 is a case where air conditioning can be performed only by storing heat in the slab 10, and case 2 is a case where additional operation of the indoor unit 2 is required. Case 3 is a case where a large amount of heat is stored when the thermostat is turned off. The blower means 2 is turned off to prevent the room temperature from dropping, and case 4 is to prolong the thermo-off state by the heat storage of the frame. In the case of heating operation, the above inequality sign may be reversed and applied.

As described above, according to the fourth embodiment, it is possible to save energy by effectively utilizing the heat storage of the skeleton in the indoor temperature control, and to realize a comfortable space. In the above embodiment, the air conditioning system having the configuration of the first embodiment has been described. However, it goes without saying that the same applies to the air conditioning system of the second embodiment.

Embodiment 5 FIG. FIG. 8 is a diagram showing changes over time in room temperature and indoor humidity during cooling operation of an air conditioning system according to Embodiment 5 of the present invention, and FIG. 9 is a diagram showing the relationship between indoor wind speed and PMV in this air conditioning system. is there. The configuration diagram of the air conditioning system is the same as that of FIG.

Next, the operation will be described. First, the preset indoor temperature is set to 26 ° C. Late night time 22
From 8:00 to 8:00 is the heat storage operation time zone, from 8:00 to 20
Until the time is the air conditioning operation time zone. At 8 o'clock, the humidity rises sharply due to the entry of outside air moisture due to ventilation and perspiration from the human body at the beginning of indoor use. However, the room temperature is low due to the heat storage of the skeleton, and the air conditioner 1 does not operate. Since the frame heat storage is sensible heat storage, the humidity cannot be removed, and when the air conditioner 1 is operated, the room temperature is further lowered and the comfort is impaired. After 9:00, since the room temperature becomes 26 ° C. or higher due to indoor use, the air conditioner 1 is additionally operated so that the room temperature becomes 26 ° C., and the increased humidity is removed.

FIG. 9 shows the relationship between the indoor wind speed and the PMV. For example, when the indoor wind speed is 0.1 m / s, PMV becomes 0.3, but when the indoor wind speed is increased to 0.2 m / s, it drops to PMV = 0 due to the draft feeling. Therefore, the PMV tends to increase when the humidity is high, but the PMV can be decreased by increasing the indoor wind speed.

Therefore, the temperature sensor 15a in the room 11
The controller 17 calculates the PMV from the detected temperature and humidity of the humidity sensor 16a, and increases the air volume of the blower 2 so that the PMV becomes an appropriate value. The relationship between the indoor wind speed and the blowing wind speed of the blowing means 2 is calculated in advance from the relationship between the ceiling height of the room 11 and set in the controller 17.

For example, in the case of a ceiling height of 2.5 m, the blowing wind speed is the indoor wind speed (1.2 m height from the living area, floor) 2.0 (m / s) → 0.10 (m / s) 3.0 (m / s) → 0.15 (m / s) 4.0 (m / s) → 0.20 (m / s) It can be expressed as described above.

As described above, according to the fifth embodiment, in the cooling operation, when the room temperature at the start of air conditioning is low and the humidity is high, the air volume of the blowing
Since V is controlled so as to have an appropriate value, a comfortable space can be realized by removing discomfort due to high humidity. In the above embodiment, the air conditioning system having the configuration of the first embodiment has been described. However, it goes without saying that the same applies to the air conditioning system of the second embodiment.

Embodiment 6 FIG. FIG. 10 is a psychrometric chart showing the relationship between the temperature and the humidity of the air-conditioning system according to Embodiment 6 of the present invention, and shows the relationship between the state of the sucked air and the dew point. The configuration diagram of the air conditioning system is the same as that of FIG.

Next, the operation will be described. In the cooling operation, when the heat storage operation is performed in the ceiling 12 in the midnight power time zone, the temperature of the slab 10 decreases, and the inlet 9 is inserted into the ceiling 12.
If high-humidity air enters from such as, there is a risk that the slab 10 will condense.

As shown in FIG. 10, assuming that the suction air state is temperature Ta and humidity Ra, the dew point Tw is obtained from the psychrometric chart.
Is uniquely determined. If the temperature of the slab 10 is equal to or higher than the dew point Tw, there is no danger of dew condensation. Therefore, the temperature sensor 15b and the humidity sensor 1
6b detects the temperature and humidity, and the controller 17 calculates the dew point. On the other hand, the temperature of the skeleton is detected by the temperature sensor 15d attached to the slab 10. Therefore, the start and stop of the blower 2 and the heat exchanger 3 are controlled so that the temperature of the skeleton becomes equal to or higher than the dew point Tw.

As described above, according to the sixth embodiment, both the temperature and the humidity inside the ceiling are detected, the dew point is calculated, and the control is performed so that the detected body temperature is equal to or higher than the dew point. Condensation can be prevented. In addition,
In the above embodiment, the air-conditioning system having the configuration of the first embodiment has been described. However, it goes without saying that the air-conditioning system having the configuration of the second embodiment is similarly performed.

[0056]

Since the present invention is configured as described above, it has the following effects. An indoor heat exchanger, a blowing means, and a ventilation switching means for switching the ventilation from the heat exchanger by the blowing means to either a direction of blowing the building frame or a direction of blowing the building chamber. An air conditioner that stores heat in the building, an indoor air temperature detecting unit that detects an air temperature in the building room, a building skeleton temperature detecting unit that detects a temperature of the building skeleton whose thermal storage is performed, and the indoor air temperature detecting unit. A perceived temperature calculating means for calculating a perceived temperature based on an air temperature and a building frame temperature by the building frame temperature detecting means, and a control for controlling the air conditioner such that the perceived temperature by the perceived temperature calculating means becomes a set temperature. Means, it is possible to realize a highly comfortable heating space with less fluctuation of the perceived temperature, and if the floor surface temperature is high, the room temperature will be controlled lower, and if the floor surface temperature is too high, A highly energy-saving operation without also becomes possible spoiled.

Further, there is provided an indoor heat exchanger, a ventilation means, and ventilation switching means for switching the direction of the ventilation from the heat exchanger to the building frame or the direction of blowing the ventilation from the heat exchanger into the building room. An air conditioner that stores heat in a building body; an indoor air temperature detecting unit that detects an air temperature in a building room; an intake air temperature detecting unit that detects an intake air temperature of the heat exchanger; Building skeleton temperature inference means for inferring the temperature of the building skeleton whose skeleton is stored from the intake air temperature of the heat exchanger by the air temperature detection means and the indoor air temperature by the indoor air temperature detection means, and the indoor air temperature detection means Temperature calculating means for calculating the temperature based on the air temperature and the building temperature by the building temperature estimating means, and the temperature detected by the temperature calculating means. Control means for controlling the air conditioner so as to be at a temperature, so that it is possible to realize a highly comfortable heating space with less fluctuation of the perceived temperature, and to control the room temperature lower when the floor surface temperature is high. In other words, high energy-saving operation is possible without wasting due to overheating, and the floor temperature and ceiling temperature of the building frame are inferred from the heat exchanger intake air temperature and room temperature to calculate the sensible temperature. An inexpensive configuration can be realized.

Further, in the heating operation, when the air temperature by the indoor air temperature detecting means has been higher than the building temperature by the building temperature detecting means or the building temperature inferring means for a predetermined time, Since the amount of air blown by the air blowing means is increased, the slab temperature drops significantly when the air-conditioning load is large during heating operation, and the room temperature is high.
When the floor surface temperature is high, the upper and lower temperature distribution is improved and a comfortable space can be realized by performing the circulation operation of the indoor air by setting the air volume of the blowing means to a predetermined value or more.

When the indoor air temperature detected by the indoor air temperature detecting means does not reach the set temperature, the heat from the heat exchanger of the air conditioner is sent into the building room by the blowing means. When the indoor air temperature has reached the set temperature, heat from the building skeleton is sent into the building room by the blowing means, so that in the indoor temperature control, the heat storage of the skeleton is effectively used to save energy. A comfortable space can be realized.

When the air conditioner is operated after cooling and storing heat in the building frame, the air volume of the air blowing means is increased, so that in cooling operation, the room temperature at the start of air conditioning is low.
When the humidity is high, the air volume of the air blowing means is increased to control the PMV to an appropriate value, so that uncomfortable feeling due to the high humidity can be eliminated and a comfortable space can be realized.

[0061] Further, a temperature near the building body detecting means for detecting a temperature near the building body, a humidity detecting means near the building body for detecting humidity near the building body, and a humidity detecting means near the building body. Dew point temperature calculating means for calculating a dew point temperature based on the humidity and the temperature near the building skeleton by the building skeleton near temperature detecting means, the building skeleton temperature detecting means or the building skeleton temperature inferring means by the building skeleton temperature inferring means Since the control means controls the heat exchanger or the air blowing means of the air conditioner so that the temperature becomes equal to or higher than the dew point temperature of the dew point temperature calculating means, dew condensation on the building body can be prevented.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an air conditioning system according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing a relationship between a room temperature and an average radiation temperature of PMV in the air-conditioning system according to Embodiment 1 of the present invention.

FIG. 3 is a diagram showing the relationship between the sensible temperature and the room temperature and the floor surface temperature of the air-conditioning system according to Embodiment 1 of the present invention.

FIG. 4 is a diagram showing a temporal change of a temperature distribution in a slab of the air-conditioning system according to Embodiment 2 of the present invention.

FIG. 5 is a diagram showing a temporal change in a ceiling temperature and a floor surface temperature of the air-conditioning system according to Embodiment 2 of the present invention.

FIG. 6 is a diagram illustrating a relationship between a height from a floor surface and a room temperature distribution of the air-conditioning system according to Embodiment 3 of the present invention.

FIG. 7 is a diagram showing a change over time of a room temperature with respect to a set temperature of the air-conditioning system according to Embodiment 4 of the present invention.

FIG. 8 is a diagram showing changes over time in room temperature and indoor humidity during a cooling operation of the air-conditioning system according to Embodiment 5 of the present invention.

FIG. 9 is a diagram showing a relationship between indoor wind speed and PMV of the air-conditioning system according to Embodiment 5 of the present invention.

FIG. 10 is an air line diagram showing a relationship between temperature and humidity of the air conditioning system according to Embodiment 6 of the present invention.

FIG. 11 is a configuration diagram of a conventional air conditioning system.

[Explanation of symbols]

1 air conditioner, 2 blowing means, 3 heat exchanger,
4 ventilation switching means, 5 skeleton side outlet, 6 duct,
7 indoor side outlet, 8 air conditioner inlet, 9 inlet, 10 slab, 11 indoor, 12 ceiling,
13 ceiling, 15a temperature sensor, 15b temperature sensor, 15c temperature sensor, 15d temperature sensor, 16a humidity sensor, 16b humidity sensor, 17 controller.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Moriya Miyamoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Tomohiko Kawanishi 2-3-2 Marunouchi, Chiyoda-ku, Tokyo 3 F term in Ryo Denki Co., Ltd. (reference) 3L060 AA03 AA06 AA07 AA08 CC01 CC02 CC06 CC08 DD02 DD08 EE05 EE41

Claims (6)

[Claims] 1. An indoor heat exchanger, a ventilation means, and a ventilation switching means for switching the ventilation from the heat exchanger by the ventilation means to either a direction in which the ventilation is blown into a building frame or a direction in which the ventilation is blown into a building room. An air conditioner that stores heat in the building frame; an indoor air temperature detecting unit that detects an air temperature in the building room; a building frame temperature detecting unit that detects the temperature of the building frame stored in the building; A perceived temperature calculating means for calculating a perceived temperature based on the air temperature detected by the air temperature detecting means and the building frame temperature detected by the building frame temperature detecting means; and An air conditioning system comprising: a control unit for controlling the air conditioner. 2. An indoor heat exchanger, a blowing means, and a ventilation switching means for switching the direction of the ventilation from the heat exchanger to the building frame or the direction of blowing the ventilation from the heat exchanger into the building room. An air conditioner that stores heat in a building body; an indoor air temperature detecting unit that detects an air temperature in a building room; an intake air temperature detecting unit that detects an intake air temperature of the heat exchanger; A building frame temperature inferring means for inferring a temperature of the building frame whose building heat is stored from an intake air temperature of the heat exchanger by an air temperature detecting means and an indoor air temperature by the indoor air temperature detecting means; and the indoor air temperature detecting means Temperature calculating means for calculating the temperature based on the air temperature and the building temperature by the building temperature estimating means; and the temperature setting by the temperature calculating means. Air conditioning system, characterized in that a control means for controlling the air conditioner so that every time. 3. During a heating operation, if the air temperature by the indoor air temperature detecting means has been higher than the building temperature by the building temperature detecting means or the building temperature inferring means for a predetermined period of time, The air conditioning system according to claim 1 or 2, wherein the air blowing amount of the air blowing means is increased. 4. When the indoor air temperature detected by the indoor air temperature detecting means does not reach the set temperature, heat from the heat exchanger of the air conditioner is sent into the building room by the blowing means, The air conditioning system according to claim 1 or 2, wherein when the indoor air temperature has reached the set temperature, the heat generated by the building body is sent into the building room by the blowing means. 5. The air conditioning system according to claim 1, wherein when the air conditioner is operated after cooling and storing the heat in the building frame, the amount of air blown by the air blowing means is increased. 6. A near-building temperature detecting means for detecting a temperature near the building body, a near-building humidity detecting means for detecting humidity near the building body, and a near-humidity detecting means near the building body. Dew point temperature calculating means for calculating a dew point temperature based on the humidity and the temperature near the building frame by the building frame temperature detecting means, wherein the building frame temperature detecting means or the building frame temperature inference means by the building frame temperature inferring means. The air conditioning system according to claim 1 or 2, wherein the control means controls a heat exchanger or a blowing means of the air conditioner such that a temperature is equal to or higher than a dew point temperature obtained by the dew point temperature calculating means.