JPH07301451A - Underfloor air conditioning system - Google Patents

Abstract

PURPOSE:To provide an underfloor air conditioning system in which a diffusing temperature is obtained in a short time by detecting a temperature in a double floor and regulating an air diffusing flow rate at a floor air outlet. CONSTITUTION:An underfloor air conditioning system utilizing a double floor regulates air diffusing flow rates of floor air outlets 6 and 6a by an air flow rate regulator, and injects air conditioned air 2 supplied from an air conditioner 1 only from the outlet 6a into a room 7 until a temperature in the double floor 5 becomes a set temperature. The temperature in the floor 5 is detected by a temperature sensor in the double floor 8. The temperature in the floor becomes a steady state in a short time, and the diffusing temperature from the outlet 6a disposed remotely from the conditioner 1 can be set to the set temperature in the short time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor air conditioning system which utilizes a double floor underfloor space as a chamber.

[0002]

2. Description of the Related Art In recent years, in an increasingly intelligent office, the floor has a double structure, and wiring for office automation equipment (hereinafter referred to as OA equipment) and communication cables are often laid in the double floor. . Using this underfloor space, conditioned air such as warm air or cold air is supplied from the air conditioner into the double floor, and these conditioned air is jetted into the room through the floor outlet formed on the floor surface for air conditioning. Underfloor air conditioning systems are rapidly becoming popular. In this air conditioning system, the air that has been air-conditioned in the room is sucked in from the suction port installed on the ceiling surface and returns to the air conditioner. Is supplied to. This air-conditioning system uses a double floor as a chamber, so it does not require duct work and is excellent in workability. Moreover, since the position of the floor outlet can be easily changed, the office layout and OA equipment heat load It is possible to perform efficient air conditioning according to.

Conventionally, underfloor air conditioning measures the indoor temperature with a temperature sensor installed in the room, controls the air conditioner based on the output signal from this sensor, and supplies the temperature and air volume to the double floor. And the method for adjusting
It has been carried out by a method as disclosed in Japanese Patent Publication No. 164393.

[0004]

However, in underfloor air conditioning, since the conditioned air is supplied to the entire double floor, the heat input from the air conditioner into the double floor cools the floor panel or floor slab. It is also used for heating, and it takes a long time for the temperature of the air blown from the floor air outlet away from the air conditioner to reach the set temperature. In addition, at present, when the height inside the double floor tends to be low, it is difficult to secure a space for heat insulating the floor slab.

Therefore, as in the conventional under-floor air conditioning system as described above, only the blowout temperature control and the air volume control of the air conditioner can be performed at the air outlet far from the air conditioner.
There was a problem that the target blowout temperature could not be secured without taking time.

Further, there is a problem that the temperature blown out from the floor outlet is affected by the path of the underfloor air flow, and the temperature difference becomes large with respect to the room temperature in the vicinity of the air conditioner.

Further, since the indoor air conditioning is performed while heat is taken by the floor panel and the floor slab, the indoor temperature does not reach the set temperature unless the floor panel and the floor slab temperature become steady.
There was a problem that it took a long time from the start of operation of the air conditioner.

Further, due to the increase in heat generation load of OA equipment,
Even in winter, the number of offices that switch to cooling operation after heating for a certain period of time is increasing, but the floor panel and floor slab heated by heating operation are cooled by cooling operation, which causes a large loss of heat energy. was there.

Further, since the underfloor becomes a flow path for conditioned air,
There was a problem that noise was generated due to the resistance under the floor.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above problems, and it is a first object of the present invention to secure a blowout temperature set at a floor blowout port far from an air conditioner in a short time.

The second object is to make the temperature of air blown out from each air outlet uniform. The third purpose is to shorten the rising time of the cooling operation and the heating operation.

A fourth object is to realize energy-saving air conditioning utilizing the heat generation load in the room.

A fifth object is to perform efficient air conditioning operation by automatically switching air conditioning.

A sixth object is to have a uniform temperature distribution in the room regardless of the distribution of the indoor heat load.

A seventh object is to reduce the transmission of air supply noise and noise in the double floor due to the operation of the air conditioner into the room.

[0016]

A first means for achieving the first object of the present invention is to provide an air conditioner and a floor for ejecting the conditioned air supplied from the air conditioner into the double floor into the room. A blower outlet, a double floor temperature detecting means for detecting the temperature in the double floor at the floor outlet, a transmitting means for transmitting the temperature detected by the temperature detecting means in the double floor, and the inside of the double floor Setting having temperature comparison means for comparing the temperature detected by the temperature detection means with a set temperature, temperature judgment means for judging whether the comparison results are equal, and judgment signal output means for outputting a judgment signal from the temperature judgment means A temperature determination unit, a determination signal transmission unit for transmitting the determination signal, a determination signal input unit for inputting the determination signal, and a signal input by the determination signal input unit to calculate the blowing air volume at the floor outlet. And an air volume conversion means having an air volume calculation means, an air volume signal transmission means for transmitting an air volume signal from the air volume conversion means, a drive means driven by the air volume signal from the air volume signal transmission means, and a connection with the drive means. The configuration is provided with an air volume adjusting means having a moving sliding means.

The second means for achieving the second object is an air flow guide means for controlling the direction of the supply air flow and a rotation for fixing the air flow guide means in the double floor under the air conditioner. An air flow control means having a support portion and a drive means for driving the air flow guide means, a rotational movement changing means for changing the rotational movement of the drive means into a reciprocating movement, and an air flow control means having a connecting portion are provided.

A third means for achieving the third object is a circulation duct for taking in the retane air to the air conditioner from the inside of the double floor, and the circulation duct in the circulation duct. Circulation air flow path switching means for switching the inflow path, retan air flow path switching means for switching the inflow path of the retane air from the ceiling chamber, determination signal input means for inputting the determination signal output from the set temperature determination means, and the circulation air flow path A switching control means having a switching determination means for determining a switching operation between the switching means and the retan airflow path switching means, a switching signal transmitting means for transmitting a switching signal, the circulating airflow path switching means and the retan airflow by the switching signal. The configuration is such that a drive means for switching the path switching means is provided.

A fourth means for achieving the fourth object is an air conditioner, a connection duct for taking in the conditioned air supplied from the air conditioner into a ceiling chamber, and an conditioned air flowing through the connection duct. The supply airflow path switching means for switching the inflow path and the switching operation means for performing the switching operation of the supply airflow path switching means.

A fifth means for achieving the fifth object is an upper temperature detecting means near the ceiling of the room for detecting the room temperature, and an upper temperature detecting means near the floor of the room for detecting the room temperature. Lower temperature detecting means, indoor temperature transmitting means for transmitting the temperatures detected by the upper temperature detecting means and the lower temperature detecting means, and temperature comparing means for comparing the temperature transmitted by the indoor temperature transmitting means with the set temperature. Also, an operation mode determination means having a switching determination means for determining the result of comparison by the temperature comparison means, a switching signal transmission means for transmitting a switching signal, a circulating air flow path switching means and a retan air flow path switching means by the switching signal. And a drive means for switching the supply air flow path switching means.

Further, a sixth means for achieving the sixth object is at least one or more retane temperature detecting means, which is provided at a suction port on the ceiling surface and detects the ethane air temperature in each zone in the room. And a retinal temperature transmitting means for transmitting the temperature detected by the retinal temperature detecting means, an average temperature calculating means for calculating an average temperature of the rectane air temperature obtained by the retinal temperature detecting means, and the average temperature and the retane temperature. Indoor load determination means having temperature comparison means for comparing the retane air temperatures obtained by the detection means and comparison signal output means for outputting a comparison signal, comparison signal transmission means for transmitting the comparison signal, and the comparison signal And a load wind for calculating the blown air volume at the floor outlet from the signal input by the comparison signal input means. A load air amount conversion means having an operation means, in which a structure having a load airflow signal transmitting means for transmitting the air volume signal from the load air quantity conversion means.

A seventh means for achieving the seventh object is a floor panel for forming a double floor, and a sound absorbing material attached to the floor panel for reducing noise transmission to the room. It has a configuration with.

[0023]

According to the present invention, by the constitution of the above-mentioned first means, the amount of air blown from the floor outlet is adjusted and the conditioned air is blown into the room only from the floor outlet located at a distant place. Carry it to a distant place without ejecting it into the room, make the floor panel and floor slab the air conditioning temperature in a short time, and eject the conditioned air of the set blowing temperature into the room in a short time from the floor outlet far from the air conditioner. Is something that can be done.

Further, with the configuration of the second means, the conditioned air supplied from the air conditioner is controlled in its air flow direction by the air flow control device immediately after the air supply to the double floor. In this way, by diffusing the conditioned air immediately after air supply, which has the largest difference from the indoor temperature, into the double floor, the temperature inside the double floor near the air conditioner and the temperature inside the double floor far from the air conditioner Is small, and the conditioned air is blown into the room while adjusting the amount of air blown from the floor outlet, so that the outlet temperature can be made uniform at the floor outlet.

Further, by the configuration of the third means, after the conditioned air supplied from the air conditioner at the start of operation of the air conditioner is diffused and circulated in the double floor without being ejected from the floor outlet to the room, , Sucked into the air conditioner from the circulation duct. By performing the air conditioning only in the double floor in this way, the temperature inside the double floor reaches the set temperature in a short time, so that the floor outlet is opened and the conditioned air starts to be blown out into the room. The rise time can be shortened.

Further, according to the structure of the fourth means, the indoor load in the ceiling chamber and in the vicinity of the ceiling is utilized, and the ventilation operation is performed by the method of sucking the floor into the ceiling to perform air conditioning in the living area. Energy-saving air conditioning is possible because the heating operation at startup can be performed without using a heat source.

Further, by the constitution of the fifth means, the temperature near the indoor ceiling and the vicinity of the floor are detected, the temperature is compared with the set temperature, and whether the air-blowing operation or the cooling operation is automatically determined. The operation can be switched at the optimum temperature.

With the structure of the sixth means, the room is divided into a plurality of zones, the retinal temperature for each zone is detected, and the magnitude of the indoor load for each zone is judged by comparison with the average value of all retinal temperatures. By adjusting the blown air volume at each floor outlet, the optimal blown air volume can be determined for each zone, and the temperature distribution in the room can be made uniform regardless of the indoor load distribution.

Further, with the configuration of the seventh means, since the sound absorbing material attached to the back surface of the floor panel absorbs the noise generated in the double floor, it is possible to reduce the noise transmission to the room during the operation of the air conditioner. Is something that can be done.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS. 2 and 3.

As shown in the figure, the conditioned air 2 supplied from the air conditioner 1 passes through a double floor 5 composed of a floor panel 3 and a floor slab 4, and from a floor outlet 6a attached to the floor panel 3. Gush into the room 7. The floor air outlet 6 and the floor air outlet 6a are equipped with a double floor temperature sensor 8 for detecting the temperature of the double floor 5, and the double floor temperature sensor 8 is set by a double floor analog signal line 9. It is connected to the temperature determination device 10. The set temperature determination device 10 includes a temperature comparison unit 11 that compares the temperature of the inside of the double floor 5 detected by the temperature sensor 8 inside the double floor with the set temperature, and a temperature determination unit 12 that determines whether the comparison results are equal and the temperature determination. A judgment signal output board 13 for outputting the judgment signal from the unit 12 is provided. The set temperature determination device 10 is connected to the air volume conversion device 15 by the determination signal cable 14, and the air volume conversion device 15 receives the determination signal input board 16 and the floor outlet 6 from the signal input by the determination signal input board 16.
An air flow rate calculation unit 17 for calculating the blown air flow rate is provided. The air volume conversion device 15 is connected to a spindle motor 19 by an air volume analog communication line 18, and the spindle motor 19 is connected to an air volume adjusting device 20. The air volume control device 20 includes a rotary shaft 21, a support rod 22, and a slide plate 2.
3 and an opening 24. A suction port 26 is installed on the ceiling surface 25, and the conditioned air 2 is supplied to the ceiling chamber 2
It is configured to pass through the inside of the air conditioner 7 and return to the air conditioner 1.

With the above structure, for example, in heating operation, all floor outlets 6 are closed at the start of operation, and the conditioned air 2 supplied from the air conditioner 1 is discharged from the floor outlet 6a 10 meters or more away from the air conditioner 1. It only gushes into the room 7. The conditioned air 2 heats the floor panel 3 and the floor slab 4 to the conditioned air temperature until the conditioned air 2 reaches the floor outlet 6a so that the conditioned air becomes steady. The blowout temperature at the floor outlet 6a is detected by the double floor temperature sensor 8, and after confirming that the blowout temperature at the floor outlet 6a has reached the set temperature by the set temperature determination device 10, it is adjusted by the air volume adjustment device 20. The conditioned air 2 is jetted from the floor outlet 6 into the room 7 with the blown out air volume. The amount of air blown out from the air outlet 6 is adjusted by moving the slide plate 23 according to the rotation of the spindle motor 19 and changing the opening area of the opening 24.

As described above, according to the underfloor air conditioning system of the first embodiment of the present invention, the heat of the conditioned air 2 supplied from the air conditioner 1 is carried away to the room without being ejected into the room, and far from the air conditioner 1. From the floor outlet 6a in the above, the air can be jetted into the room 7 in a short time at the set blowing temperature.

RS-232C and GP-IB may be used as the output means, the transmission means and the input means, and there is no difference in their action and effect.

Next, the second embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG.

The same parts as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, in the double floor 5 downstream of the air conditioner 1, an air flow control is provided with an air flow guide plate 28, a rotation support part 29, a drive motor 30, a rotary motion changing device 31 and a connecting rod 32. It is configured to position the device 33.

With the above structure, in the heating operation, for example, the conditioned air 2 supplied from the air conditioner 1 is ejected into the room 7 only from the floor outlet 6a located at a distance of 10 meters or more from the air conditioner 1. The conditioned air 2 heats the floor panel 3 and the floor slab 4 to the conditioned air temperature until the conditioned air 2 reaches the floor outlet 6a so that the conditioned air becomes steady. The blowout temperature at the floor outlet 6a is detected by the double floor temperature sensor 8, and after confirming that the blowout temperature at the floor outlet 6a has reached the set temperature by the set temperature determination device 10, it is adjusted by the air volume adjustment device 20. The conditioned air 2 is jetted from the floor outlet 6 into the room 7 with the blown out air volume. To adjust the amount of air blown from the outlet 6,
This is performed by moving the slide plate 23 according to the rotation of the spindle motor 19 and changing the opening area of the opening 24. Further, the rotational movement of the drive motor 30 is replaced by the reciprocating movement via the rotational movement changing device 31 and the connecting rod 32, and the airflow guide plate 28 connected to the connecting rod 32 reciprocates at a constant angle around the rotation supporting portion 29. Do exercise. In this way, by changing the supply airflow direction and diffusing the conditioned air 2 in the double floor 5, the temperature in the double floor near the air conditioner 1 and the temperature in the double floor far from the air conditioner 1 can be reduced. The difference is made small and the temperature distribution in the double bed 5 is made close to uniform.

As described above, according to the underfloor air conditioning system of the second embodiment of the present invention, the floor air outlet 6 is controlled by controlling the air supply airflow from the air conditioner 1 and adjusting the blown air volume at the floor air outlets 6 and 6a. It is possible to make the blowing temperatures from 6a and 6a uniform.

Although the air flow is controlled by one air flow guide plate in the embodiment, a plurality of air flow guide plates may be used.
It does not make a difference in its action and effect.

Next, a third embodiment of the present invention will be described with reference to FIGS. 6, 7 and 8.

The same parts as those of the first and second embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, the conditioned air 2 supplied from the air conditioner 1 diffuses in the double floor 5 and then returns to the air conditioner 1 through the circulation duct 34 installed in the double floor 5. A circulating airflow path switching damper 35 is attached to a connecting portion between the air conditioner 1 and the circulation duct 34. Further, a retane airflow path switching damper 36 is attached to the path through which the conditioned air 2 sucked from the suction port 22 returns to the air conditioner 1. The set temperature determination device 10 is connected to the damper switching control device 37 by the determination signal cable 14, and the damper switching control device 37 connects the determination signal input board 16 to the determination signal input board 16.
And a switching determination unit 3 that performs switching determination of the circulating air flow path switching damper 35 and the retan air flow path switching damper 36 based on a signal input from the determination signal input board 16.
Eight. The transmission signal from the damper switching control device 37 is transmitted to the damper opening / closing motor 40 via the switching analog signal line 39, and the damper opening / closing motor 40
Is configured to switch between the circulating air flow path switching damper 35 and the retinous air flow path switching damper 36.

With the above structure, the floor outlet 6 is provided at the start of operation.
By closing all of 6 and 6a, the conditioned air 2 supplied from the air conditioner 1 is diffused in the double floor 5 and circulated, and then sucked into the circulation duct 34 installed in the double floor 5. The circulation air flow path switching damper 35 is open, and the conditioned air 2 sucked into the circulation duct 34 returns to the air conditioner 1. Also, while the circulating air flow path switching damper 35 is open,
Since the damper air flow path switching damper 36 is closed,
The conditioned air returning to the air conditioner 1 is only from the circulation duct 35. After the temperature inside the double floor detected by the temperature inside the double floor 8 becomes equal to the set value, the circulation airflow path switching damper 35 and the retan airflow path switching damper 36 are switched according to the damper opening / closing motor 40 and supplied from the air conditioner 1. The conditioned air 2 passes through the double floor 5 and the floor outlet 6
And 6a to the room 7. The conditioned air 2 that has air-conditioned the room 7 is sucked in through the suction port 26, passes through the ceiling chamber 27, and returns to the air conditioner 1.

As described above, according to the underfloor air conditioning system of the third embodiment of the present invention, when the operation is started, the conditioned air 2 is circulated in the double floor 5 without being ejected into the room 7, and the double floor 5 Since the air conditioning is preferentially performed, it is possible to shorten the rise time when the temperature inside the double floor 5 reaches the set temperature in a short time and the conditioned air 2 starts to be jetted from the floor outlet 6 into the room 7.

RS-232C and GP-IB may be used as the output means, the transmission means and the input means, and there is no difference in their effects.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The first, second and third
The same parts as those of the embodiment are given the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, the conditioned air 2 supplied from the air conditioner 1 passes through the supply air flow path switching damper 41, passes through the connecting duct 42 located behind the air conditioner 1, and is installed on the ceiling surface 25. From the suction inlet 26 into the room 7,
It is sucked into the double-floor space 5 through the floor outlets 6 and 6a, passes through the circulation duct 34, and returns to the air conditioner 1 again. The circulation air flow path switching damper 35, the retin air flow path switching damper 36, and the supply air flow path switching damper 41 are configured to be switched by a damper switching switch 43. For the heat generation load, OA equipment, lighting, human body, etc. are used.

With the above structure, in an office having a heat load in the room, during the start-up operation in winter, the air is blown from the suction port 26 installed on the ceiling surface 25 and is sucked from the floor outlets 6 and 6a. The warm air from the heat load is used for air conditioning in the residential area. When the indoor temperature becomes higher than the set temperature due to the blowing operation due to the increase in the indoor load, switching to the cooling operation is performed. At the same time as switching to the cooling operation, the circulating air flow path switching damper 35
And the return airflow path switching damper 36 and the supply airflow path switching damper 41 to the damper switching switch 4
Switch by 3. Circulating air flow path switching damper 35
And the supply airflow path switching damper 41 are closed, the retentate airflow path switching damper 36 is opened, the conditioned air 2 supplied from the air conditioner 1 is ejected from the floor outlets 6 and 6a into the room 7, and passes through the suction port 26. It is possible to perform air conditioning in the living area by switching to the route returning to the air conditioner 1.

As described above, according to the underfloor air-conditioning system of the fourth embodiment of the present invention, the air-conditioning operation at the time of start-up is performed by the air-blowing operation utilizing the indoor load, so that the energy-saving air-conditioning can be performed. .

Next, the fifth embodiment of the present invention will be described with reference to FIG.
0 and FIG. 11 will be described.

The same parts as those in the first, second, third and fourth embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, in the room 7, an upper temperature sensor 44 is located about 100 mm below the ceiling surface 25, and a lower temperature sensor is located about 100 mm above the floor panel 3 to detect the room temperature at the ankle height. 45 is installed, and the upper temperature sensor 44 and the lower temperature sensor 45 are connected to the operation mode determination device 47 by the indoor analog signal line 46. The operation mode determination device 47 compares the temperature Tu detected by the upper temperature sensor 44 and the temperature Td detected by the lower temperature sensor 45 with the set temperature Ts with the indoor temperature comparison unit 48 and the indoor temperature comparison unit 48. The operation switching determination unit 49 for determining The switching determination signal is transmitted to the damper switching motor 51 through the damper switching analog signal line 50, and the damper switching motor 51 causes the circulation air flow path switching damper 35 and the retan air flow path switching damper 3 to be transmitted.
6 and the supply airflow path switching damper 41 are configured to be switched.

With the above-described structure, the temperature Tu detected by the upper temperature sensor 44 and the lower temperature sensor 4 during the start-up operation in winter in an office having an indoor heat load.
The temperature Td detected in 5 is used as the operation mode determination device 47.
When the temperature Tu and the temperature Td are equal to or lower than the set temperature Ts, the blow-in operation is performed from the suction port 26 installed on the ceiling surface 25, and the conditioned air 5 is discharged from the floor outlets 6 and 6a. Inhale. When the temperature Tu and the temperature Td reach or exceed the set temperature Ts, the cooling operation is switched to. Furthermore, the circulating air flow path switching damper 35
Also, the return airflow path switching damper 36 and the supply airflow path switching damper 41 are switched, and the circulating airflow path switching damper 35 and the supply airflow path switching damper 41 are also switched.
Is closed and the damper air flow path switching damper 36 is opened. As a result, the conditioned air 2 supplied from the air conditioner 1 is ejected from the floor outlet 6 into the room 7 and is switched to a route returning to the air conditioner 1 through the suction port 26, so that the living area air conditioning can be performed.

As described above, according to the underfloor air conditioning system of the fifth embodiment of the present invention, when the air conditioning is started up, it is automatically judged whether the air blowing operation utilizing the indoor heat load or the normal cooling operation is performed. Energy saving operation can be performed automatically.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
2, with reference to FIGS. 13 and 14.

The first, second, third, fourth and fifth
The same parts as those of the embodiment are given the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, a retinal temperature sensor 52 is provided inside the suction port 26 installed on the ceiling surface 25, and is connected to an indoor load judging device 54 by a retinal analog signal line 53. Indoor load determination device 54
Is an average temperature calculation unit 55 for calculating the average value of the ethane temperature, and a temperature comparison unit 56 and a temperature comparison unit for comparing the average temperature obtained by the average temperature calculation unit 55 and the ethane temperature obtained by the retane temperature sensor 52. A comparison signal output board 57 for outputting a comparison signal from 56 is provided. The indoor load determination device 54 is connected to the load air volume conversion device 59 by the comparison signal cable 58, and the load air volume conversion device 59 uses the comparison signal input board 60 and the signal input by the comparison signal input board 60 to perform floor blowing. A load air volume calculation unit 61 is provided for calculating the blown air volume at the outlets 6 and 6a. The load air volume conversion device 59 uses the load air volume analog signal line 62 to connect the spindle motor 19
The main shaft motor 19 is connected to
It is configured to connect with 0.

With the above structure, the room 7 is divided into a plurality of zones, the size of the indoor load is determined from the retinal temperature in each zone, and the load air volume conversion device 59 calculates the blowout air volume necessary for the indoor load processing to perform floor blowing. The amount of air blown from the outlets 6 and 6a is determined. In a zone in which the retane temperature is higher than the average value of the retane temperature, the blowing air volume is increased during cooling and the blowing air volume is reduced during heating. In addition, the amount of air blown out from the floor air outlets 6 and 6a is controlled by the air volume control device 2
Adjusted by 0. By performing the indoor load processing for each zone in this manner, the temperature distribution in the room 7 can be made uniform.

As described above, according to the underfloor air conditioning system of the sixth embodiment of the present invention, the temperature distribution in the room 7 can be made uniform without depending on the distribution of the indoor load.

Note that RS-232C and GP-IB may be used as the output means, the transmission means, and the input means, and there is no difference in their effects.

Next, the seventh embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. The first, second, third,
The same parts as those in the fourth, fifth and sixth embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in the figure, the conditioned air 2 supplied from the air conditioner 1 passes through the double floor 5 formed by the sound absorbing floor panel 63 and the floor slab 4 and is blown on the floor installed on the sound absorbing floor panel 63. The air is ejected from the outlet 6 into the room 7 to air-condition the room 7.

With the above configuration, the noise generated when the conditioned air 2 is supplied from the air conditioner 1 to the double floor 5 and the noise generated when the conditioned air 2 flows in the double floor 5 are absorbed. Since it is absorbed by the foam sound absorbing material attached to the floor panel 63,
The noise transmitted to the room can be minimized.

As described above, according to the underfloor air conditioning system of the seventh embodiment of the present invention, the air supply noise and the noise in the double floor due to the operation of the air conditioner are transmitted to the foamed sound absorbing material attached to the sound absorbing floor panel 63. Since it is absorbed, the transmission of noise to the room 7 is reduced, and it is possible to perform air conditioning with excellent noise reduction.

Although the foamed sound absorbing material is used as the sound absorbing material in the embodiment, another sound absorbing material may be used without any difference in its function and effect.

[0067]

As is apparent from the above embodiments, according to the present invention, the set blowout temperature can be secured in a short time at the floor blowout port far from the air conditioner.

Further, the blowout temperature from each blowout port can be made uniform. Further, the rising time of the cooling operation and the heating operation can be shortened.

Furthermore, energy-saving air conditioning can be achieved by performing the ventilation operation using the indoor load instead of the heating operation at startup and automatically switching from the change in the indoor temperature to the cooling operation.

Further, the indoor temperature can be made uniform regardless of the indoor load distribution. Further, it is possible to reduce the transmission of the air supply noise and the noise in the double floor due to the operation of the air conditioner into the room.

[Brief description of drawings]

FIG. 1 is a sectional view of an underfloor air conditioning system according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing the air volume adjusting device of FIG.

FIG. 3 is a block diagram showing a configuration of an underfloor air conditioning system according to the first embodiment.

FIG. 4 is a sectional view of an underfloor air conditioning system according to the second embodiment.

5 is an explanatory view showing the airflow guide device of FIG.

FIG. 6 is a sectional view of an underfloor air conditioning system according to the third embodiment.

FIG. 7 is a sectional view of an underfloor air conditioning system according to the third embodiment.

FIG. 8 is a block diagram showing the same configuration.

FIG. 9 is a sectional view of an underfloor air conditioning system according to the fourth embodiment.

FIG. 10 is a sectional view of an underfloor air conditioning system of the same fifth embodiment.

FIG. 11 is a block diagram showing the same configuration.

FIG. 12 is a sectional view of an underfloor air conditioning system according to the sixth embodiment.

FIG. 13 is a block diagram showing the same configuration.

FIG. 14 is a diagram showing the same cooling operation switching condition.

FIG. 15 is a sectional view of an underfloor air conditioning system according to the seventh embodiment.

[Explanation of symbols]

 1 Air-conditioner 2 Air-conditioned 5 Double floor 6 Floor outlet 6a Floor outlet 7 Indoor 8 Double floor temperature sensor 9 Double floor analog signal line 11 Temperature comparison unit 12 Temperature judgment unit 13 Judgment signal output board 14 Judgment signal cable 16 Judgment signal input board 17 Air volume calculation section 18 Air volume analog communication line 19 Main shaft motor 20 Air volume adjustment device 25 Ceiling surface 26 Suction port 27 Ceiling chamber 28 Air flow guide plate 29 Rotation support section 30 Drive motor 31 Rotation Movement changing device 34 Circulation duct 35 Circulating airflow path switching damper 36 Retan airflow path switching damper 38 Switching determination section 39 Switching analog signal line 40 Damper opening / closing motor 41 Air supply airflow path switching damper 42 Connection duct 43 Damper switching switch 44 Upper temperature sensor 45 Lower temperature Ser 46 Indoor analog signal line 48 Indoor temperature comparison unit 49 Operation switching determination unit 50 Damper switching analog signal line 51 Damper switching motor 52 Retan temperature sensor 53 Retan analog signal line 55 Average temperature calculation unit 56 Temperature comparison unit 57 Comparison signal Output board 58 Comparison signal cable 60 Comparison signal input board 61 Load air volume calculation unit 62 Load air volume analog signal line 63 Sound absorbing floor panel

Claims (7)

[Claims] 1. In an underfloor air conditioning system using a double floor, an air conditioner, a floor outlet for ejecting the conditioned air supplied from the air conditioner into the double floor into the room, and a floor outlet for the air outlet. Double floor temperature detecting means for detecting the temperature in the heavy floor, transmitting means for transmitting the temperature detected by the double floor temperature detecting means, and temperature and set temperature detected by the double floor temperature detecting means Temperature comparing means for comparing, a temperature determining means for determining whether the comparison results are equal, a determination signal output means for outputting a determination signal from the temperature determining means, and a determination signal transmitting means for transmitting the determination signal. A judgment signal inputting means for inputting the judgment signal, an air quantity calculating means for calculating a blowing air quantity at the floor outlet from the signal inputted by the judgment signal inputting means, and a wind from the air quantity calculating means An underfloor air-conditioning system comprising: an air volume signal transmitting means for transmitting an air volume signal; a driving means for driving by an air volume signal from the air volume signal transmitting means; and an air volume adjusting means connected to the drive means for moving. 2. An air flow guide means for controlling the direction of the supply air flow, a rotation support part for fixing the air flow guide means, and a drive means for driving the air flow guide means in a double floor downstream of the air conditioner. The underfloor air-conditioning system according to claim 1, further comprising: a rotational movement changing means for changing the rotational movement of the drive means into a reciprocating movement. 3. A circulation duct for taking in the tan air to the air conditioner from the inside of the double floor, a circulating air flow path switching means for switching the inflow path of the tan air in the circulation duct, and a circulation chamber from the ceiling chamber. A retan airflow path switching means for switching the inflow path of the retan air, a judgment signal input means for inputting the judgment signal output from the judgment signal output means, and a switching operation of the circulating airflow path switching means and the retan airflow path switching means are judged. 3. A switching determination means for performing switching, a switching signal transmitting means for transmitting a switching signal, and a drive means for switching between the circulating air flow path switching means and the retinous air flow path switching means according to the switching signal. Underfloor air conditioning system. 4. An office having a heat load, a connection duct for taking in the conditioned air supplied from an air conditioner into a ceiling chamber, and a supply airflow path switching means for switching an inflow path of the conditioned air flowing through the connection duct. ,
The underfloor air conditioning system according to claim 1, 2 or 3, further comprising a switching operation unit that performs a switching operation of the supply airflow path switching unit. 5. An upper temperature detecting means near an indoor ceiling for detecting an indoor temperature, a lower temperature detecting means near an indoor floor for detecting an indoor temperature, the upper temperature detecting means and the lower portion. Indoor temperature transmitting means for transmitting the temperature detected by the temperature detecting means, temperature comparing means for comparing the temperature transmitted by the indoor temperature transmitting means with the set temperature, and switching determination for determining the result of comparison by the temperature comparing means 3. A means, a switching signal transmitting means for transmitting a switching signal, and a driving means for switching between the circulating air flow path switching means, the retinous air flow path switching means and the supply air flow path switching means according to the switching signal. The underfloor air conditioning system according to 3 or 4. 6. Instead of the double floor temperature detecting means, at least one or more retinal temperature detecting means for detecting the retane air temperature in each zone of the room at the inlet of the ceiling surface, and the retinal. The retan temperature transmitting means for transmitting the temperature detected by the temperature detecting means, the average temperature calculating means for calculating the average temperature of the retan air temperature obtained by the retan temperature detecting means, and the average temperature and the retan temperature detecting means. A temperature comparison means for comparing the obtained retan air temperatures, a comparison signal output means for outputting a comparison signal, a comparison signal transmission means for transmitting the comparison signal, and a comparison signal input means for inputting the comparison signal, A load air volume calculation means for calculating the blown air volume at the floor outlet from the signal input by the comparison signal input means, and an air volume signal from the load air volume calculation means. An underfloor air-conditioning system equipped with a load air volume signal transmitting means for transmitting a signal. 7. A floor panel forming a double floor, comprising a sound absorbing floor panel for reducing the transmission of noise in the double floor into the room. The underfloor air conditioning system described in 6.