JPH10148376A - Floor diffused air-conditioning type operation control method, and air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the comfort of the floor diffused air-conditioning system by outputting the operation control signal from a control device to a perimeter air- conditioner when the room temperature exceeds the set temperature of a floor outlet type air-conditioner by >= the prescribed value, and increasing the cooling output. SOLUTION: An operation control method is related to the operation control of an air-conditioner in the cooling condition. When a floor diffused type air-conditioner 43 and a perimeter air-conditioner 49 are in the cooling operation mode, a control device 55 detects the room temperature of a living room by a thermostat 57. When the control device 55 judges that the set temperature of the interior system, i.e., the set temperature of the floor diffused type air-conditioner is lower than the room temperature, the set temperature of the perimeter air-conditioner is dropped and the cooling output of the perimeter air-conditioner 49 is increased. As a result, the cooling load of the floor outlet air-conditioner 43 is reduced, and the temperature of the supplied air rises, and the air supply volume is reduced when the variable air volume control is effected. The cooling output of the perimeter air-conditioner 49 difficult to generate the air-flow feeling is increased, and the whole living room has the comfortable temperature distribution.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control method of a floor air-conditioning system for blowing conditioned air from a floor and an air-conditioning system therefor. The present invention relates to a method and system for cooperatively controlling a device (for example, a fan coil unit or the like).

[0002]

2. Description of the Related Art In recent years, the so-called floor-blowing air-conditioning system in which conditioned air is blown from the floor in the pursuit of comfort and suppression of floating dust has been increasing in the air-conditioning system. In the floor air-conditioning system, as shown in FIG. 3A, a closed space 3 is formed under the floor of a living room 1 and a plurality of floor outlets 7 are provided on a floor 5 and supplied to the closed space 3 by an air conditioner 9. Conditioned air is blown into the living room 1 through the floor outlet 7 and
The room 1 is air-conditioned by collecting it again from the return opening 13 provided in the air conditioner 9 through the chamber 15 in the ceiling or the duct (not shown) in the ceiling.

[0003] On the other hand, a conventional ceiling air-conditioning system is generally provided with a plurality of ceiling air outlets 17 and return openings 13 at predetermined positions of a ceiling 11 as shown in FIG. 9 blows out the conditioned air supplied to the ceiling outlet 17 into the living room 1, and collects it from the return opening 13 provided in the ceiling 11 to the air conditioner 9 again via the chamber 15 in the ceiling or the duct in the ceiling. The air conditioning.

[0004] Therefore, particularly in the case of heating, in the case of the ceiling blowing method, the higher the ceiling, the more difficult it is for the hot air to reach the lower part, and the vertical temperature distribution becomes non-uniform as shown in FIG. In particular, when the lower floor is an external condition such as a parking lot, the slab cools down, resulting in an uncomfortable air conditioning environment with cold feet. On the other hand, in the case of the floor blowing air-conditioning system, the conditioned air (warm air) blown out from the floor blowing outlet 7 can be naturally convected upward by buoyancy, and FIG.
As shown in (1), the vertical temperature distribution in the living area became almost uniform, and a comfortable air-conditioning environment without getting cold at the feet could be formed.

[0005] In the case of the ceiling blow-out system, conditioned air is blown into the living room to agitate the room air in an unspecified direction, so that the residence time of smoke and dust becomes long, and efficient removal cannot be performed. On the other hand, in the case of the floor blowing air-conditioning system, since the conditioned air flows from the floor to the ceiling in one direction, the filter 19 can efficiently remove smoke and dust.

[0006]

However, although the above-described floor air-conditioning system has many advantages over the ceiling air-conditioning system, it is uncomfortable with the cold air blown from the feet in terms of comfort during cooling. Was sometimes sued. That is, in the ceiling blowing method, since cool air heavier than the room air can be lowered from the ceiling side by natural convection, there is a feeling of airflow from above (draft; discomfort due to hit by blowing air), but FIG. As shown in B), no low-temperature region was formed near the floor surface.
On the other hand, in the floor air-conditioning system, as shown in FIG. 5A, when the set temperature of the living room is, for example, 26 ° C.
Since the conditioned air (cool air) having a lower temperature is blown out from the floor outlet 7, if this temperature difference is large, discomfort due to the cool air may be generated in the vicinity of the floor outlet 7. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an operation control method and an air conditioning system of a floor blow air-conditioning system capable of eliminating discomfort due to cool air blown from a floor blow outlet without lowering a cooling capacity with respect to a cooling load. The aim is to improve the comfort of the floor air-conditioning system.

[0007]

According to a first aspect of the present invention, there is provided an operation control method of a floor blow air-conditioning system according to the present invention, comprising: a floor blow air conditioner for blowing conditioned air upward from a floor blow outlet; A perimeter air conditioner that blows air-conditioned air upward along a vertical window is a floor blow air-conditioning operation control method in which the control device cooperates and controls the perimeter air conditioner, wherein a room temperature during cooling is detected by the control device, and the room temperature is detected. When the cooling output of the perimeter air conditioner is maintained at the current level when the temperature is within a certain range with respect to the set temperature of the floor blow air conditioner, when the room temperature is higher than the set temperature of the floor blow air conditioner by a certain value or more. An operation control signal is transmitted from the control device to the perimeter air conditioner to increase the cooling output of the perimeter air conditioner to a predetermined value. Preferably, the cooling output of the perimeter air conditioner is increased by simultaneously changing either the set temperature or the air flow, or the set temperature and the air flow. Further, the air conditioning system according to the present invention has a floor blow air conditioner that blows the conditioned air upward from a floor blow outlet by supplying conditioned air to a closed space formed under the floor, A perimeter air conditioner that blows air-conditioned air upward along a vertical window provided, and a set temperature value of the perimeter air conditioner obtained by detecting a room temperature and calculating based on the room temperature and a stored predetermined condition value And a control device for sending the air flow value to a control circuit of the perimeter air conditioner to control the perimeter air conditioner.

[0008] In the operation control method of the floor air-conditioning system,
During the cooling operation, the perimeter air conditioner is controlled by the control device, and when the difference between the room temperature and the set temperature is large, the load of the interior system is processed by the perimeter air conditioner as much as possible. As a result, it becomes possible to increase the temperature of air blown by the floor blow air conditioner or to reduce the amount of air blow, thereby reducing the influence of cool air during cooling. And the increase in the cooling output of the perimeter air conditioner
By changing either the set temperature or the air flow rate, or the set temperature and the air flow rate at the same time, it becomes possible with simple equipment and easily. In the air conditioning system according to the present invention,
By providing the floor air conditioner and the perimeter air conditioner, and controlling the perimeter air conditioner by the control device, the burden ratio of the cooling output between the floor air conditioner and the perimeter air conditioner can be easily changed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an operation control method and an air conditioning system according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a flowchart illustrating an operation control method according to the present invention, and FIG. 2 is a schematic configuration diagram of an air conditioning system that implements the operation control method according to the present invention. As shown in FIG. 2, the floor 23 of the living room 21 and the slab 2 on the lower floor side
5, a closed space 27 is formed.
7 is a living room 2 through a plurality of floor outlets 29 provided on the floor 23.
It communicates with 1.

The ceiling 31 of the living room 21 and the slab 33 on the upper floor side
A ceiling chamber 35 or a ceiling duct (not shown) is formed between them, and the ceiling chamber 35 or the ceiling duct is formed with a return opening 37 provided in the ceiling 31.
Through the living room 21.

An air conditioner room 41 provided on the same floor as the living room 21 (may be another floor) is provided with a floor blowing air conditioner 43 which is responsible for the interior system of the living room 21. The floor air conditioner 43 has a supply side (air supply side) connected to the closed space 27 under the floor, and a return side (return air side) connected to the ceiling chamber 35 or the ceiling duct. Therefore, the conditioned air (supply) blown from the floor blow air conditioner 43 is supplied to the closed space 27, blows out to the living room 21 through the floor outlet 29, and then passes through the return opening 37 of the ceiling 31. The air is sucked into the inner chamber 35 or the duct in the ceiling, and is collected again by the floor air conditioner 43 to be circulated. In FIG. 2,
The intake of fresh outside air (OA) is omitted.

The floor blow air conditioning system includes a pressure system in which the closed space 27 is pressurized and a fan system in which a blower fan is provided at the floor outlet 29 so as not to pressurize the closed space 27. The pressure method is inexpensive because it does not require the installation of a plurality of blower fans, while the fan method can easily realize a fine air-conditioning environment because remote control of the air flow is possible for each outlet. The operation control method of the present invention includes:
It can be applied to either the pressure method or the fan method.

The side wall 47 of the living room 21 provided with the vertical window 45
Is provided with a perimeter air conditioner (for example, a fan coil unit or the like) 49 that takes charge of the perimeter system of the living room 21. The perimeter air conditioner 49 may be of a type that circulates heat in a cold / hot water circulation type or a type that incorporates a heat pump. The perimeter air conditioner 49
The air sucked from the lower air inlet 51 opened near the floor 23 is heat-exchanged by a built-in heat exchanger, and then blown vertically upward through a window 53 from the upper surface along a window.

Therefore, the perimeter air conditioner 49 reduces the temperature drop in the window peripheral area by blowing hot air along the window, particularly in the winter peripheral area, where heat is transmitted to the outside in a large area. Can be. Also, even in the summer, etc., by blowing cool air along the window in the area around the window where heat transfer from the outside increases, the temperature rise in the area around the window can be reduced, reducing the influence from the external environment As a result, the comfort around the window can be improved.

In the air conditioning system 54 for implementing the operation control method according to the present invention, the operation control circuit of the above-described perimeter air conditioner 49 is connected to the control device 55. Control device 5
5 determines a temperature setting value and an air volume of the perimeter air conditioner 49 based on a storage means for storing a predetermined condition value, a detection value from a thermostat 57 provided in the living room 21 and the condition value stored in the storage means. Calculation means (microcomputer etc.)
And signal transmitting means for transmitting the set value determined by the calculating means to the operation control circuit of each air conditioner. When the floor air-conditioning system is a fan system, the control device 55 enables the control signal to be sent to each of the blower fans individually.

An operation control method of a floor air-conditioning system using the air-conditioning system 54 configured as described above will be described. The operation control method according to the present invention relates to an air conditioner operation control method during cooling. Therefore, at the time of heating, the floor blow air conditioner 43 and the perimeter air conditioner 49
Is controlled by the control device 55 in the same manner as in the prior art, and the description of the procedure will be omitted here.

As shown in FIG. 1, when the floor blow air conditioner 43 and the perimeter air conditioner 49 enter the cooling operation (st1, s).
t3), the controller 55 detects the room temperature T _R of the room 21 by the thermostat 57. Next, the controller 55
If it is determined that the set temperature of the interior system, that is, the floor outlet air conditioner set temperature T _FS is lower than the room temperature T _R -1 ° c (st5), the perimeter air conditioner set temperature T _PS is lowered (for example, T _PS- 1 ° c), the cooling output of the perimeter air conditioner 49 is increased (st7). As a result, as a result, the floor blowing air conditioner 43 in which the cooling load is reduced has a higher blast temperature, and when the variable air volume control is performed,
The blowing amount is reduced (st9). That is, by increasing the load on the perimeter air conditioner 49, the load on the floor blow air conditioner 43 is correspondingly reduced.

At this time, by making the absolute value of the increased cooling output of the perimeter air conditioner 49 equal to the decreased cooling output of the floor blow air conditioner 43, the required cooling capacity for the cooling load of the living room 21 is ensured. . That is, the cooling output of the perimeter air conditioner 49, which does not easily generate a sense of airflow, is increased by the amount of suppressing the blowing of cool air from the uncomfortable feet, so that the entire room has a comfortable temperature distribution.

Further, the controller 55 determines that the floor blow air conditioner set temperature T _FS is lower than the room temperature T _R -1 ° C and the room temperature T _R
+ 1 ° when determining that the higher c (st11), i.e., when there is no large temperature difference and the floor blowout air conditioner set temperature T _FS and room temperature T _R, to maintain current the set temperature of the perimeter air conditioner 49 (st13 ). Thereby, the floor blow air conditioner 4
The air blowing temperature and air blowing amount of No. 3 are also maintained as they are (st15).
In other words, when there is no large difference between the floor outlet air conditioner set temperature T _FS and the room temperature T _R , discomfort due to cool air is unlikely to occur.

When the controller 55 determines that the floor blow air conditioner set temperature T _FS is higher than the room temperature T _R + 1 ° C. (st 17), that is, when the room temperature is too low, the perimeter air conditioner 49. Is raised to, for example, T _PS + 1 ° C. (st19). At this time, since the room temperature is in a state of being too low, as a result, the air blowing temperature of the floor blow air conditioner 43 also increases, and when the variable air volume control is performed, the air blowing volume also decreases (st21).

[0021] Thus, according to the operation control method of the floor blowout air conditioning system described above, is controlled by Perimeter air conditioner 49 to control unit 55, a large difference between the set temperature of room temperature T _R and the floor blowout air conditioner 43 In some cases, the load of the interior system is processed by the perimeter air conditioner 49 as much as possible, so that the blast temperature of the floor blow air conditioner 43 can be increased or the blast amount can be reduced. As a result, the floor outlet 29
By reducing the amount of air blown from the air and increasing the blow-out temperature, the cooling of the feet during cooling can be eliminated, and the comfort of the floor blow-out air conditioning system can be further improved. And this method is
Especially when the cooling load is not so large (floor air conditioner 4
3 and when the perimeter air conditioner 49 operates at an operation rate equal to or lower than a certain value).

Further, according to the operation control method described above, an energy saving effect can be expected by reducing the amount of air blown from the floor outlet 29.

According to the air conditioning system 54 described above,
Since the floor air conditioner 43 and the perimeter air conditioner 49 are provided, and the perimeter air conditioner 49 is controlled by the control device 55, the floor air conditioner is controlled based on the room temperature and the set temperature of the floor air conditioner 43. The load ratio of the cooling output between the air conditioner 43 and the perimeter air conditioner 49 can be easily variably controlled. As a result, it is possible to suppress the blowing of cool air from the floor outlet 29 while ensuring the required cooling capacity for the cooling load of the living room 21.

Note that the condition values or set values (T _R -1 ° C, T _R + 1 °) used for the determination by the control device 55 described above.
c, T _PS -1 ° c, T _PS + 1 ° c) are examples and are not limited to these values. In addition, the change of the blowing condition from the perimeter air conditioner 49 may vary both the blowing temperature and the blowing amount as described above, or may change either the blowing temperature or the blowing amount.

[0025]

As described in detail above, according to the operation control method of the floor air-conditioning system according to the present invention, the perimeter air conditioner is controlled by the control device during the cooling operation, and the difference between the room temperature and the set temperature is controlled. When is large, the load of the interior system can be processed by the perimeter air conditioner as much as possible, so that the air temperature of the floor blow air conditioner can be increased or the air volume can be reduced. As a result, the feet can be prevented from being cooled during cooling, and the comfort of the floor air-conditioning system can be further improved. Then, the increase in the cooling output of the perimeter air conditioner is one of the set temperature and the air flow,
Alternatively, by simultaneously changing the set temperature and the air volume, the operation can be easily performed with simple equipment. In addition, according to the air conditioning system according to the present invention, since the floor air conditioner and the perimeter air conditioner are provided and the perimeter air conditioner is controlled by the control device in cooperation, the floor air conditioner and the perimeter air conditioner are used. By easily and variably controlling the load ratio of the cooling output, it is possible to suppress the blowing of cool air from the floor outlet while securing the required cooling capacity for the cooling load.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating an operation control method according to the present invention.

FIG. 2 is a schematic configuration diagram of an air conditioning system that implements the operation control method according to the present invention.

FIGS. 3A and 3B are schematic diagrams of a conventional floor air-conditioning system and a ceiling air-conditioning system, respectively.

FIG. 4 is a graph showing vertical temperature distributions (A) and (B) during heating of a conventional floor air-conditioning system and a ceiling air-conditioning system.

FIGS. 5A and 5B are graphs showing vertical temperature distributions of the conventional floor air-conditioning system and the ceiling air-conditioning system at the time of cooling.

[Explanation of symbols]

 27 enclosed space 29 floor outlet 43 floor air conditioner 45 window 47 side wall 49 perimeter air conditioner 53 outlet 54 air conditioning system 55 controller

Claims (3)

[Claims] 1. A floor blower that controls a floor blow air conditioner that blows air-conditioned air upward from a floor blow outlet and a perimeter air conditioner that blows air-conditioned air upward along a vertical window provided on a side wall by a control device. An operation control method of an air conditioning system, wherein a room temperature during cooling is detected by the control device, and when the room temperature is within a certain range with respect to a set temperature of the floor blow air conditioner, a cooling output of the perimeter air conditioner is determined. On the other hand, when the room temperature is maintained, when the room temperature is higher than a set temperature of the floor blow air conditioner by a certain value or more, an operation control signal is sent from the control device to the perimeter air conditioner to set a cooling output of the perimeter air conditioner to a predetermined value. The operation control method of the floor blowing air-conditioning system, characterized in that the value is increased to: 2. The floor according to claim 1, wherein the cooling output of the perimeter air conditioner is increased by changing one of a set temperature and an air flow rate, or simultaneously changing the set temperature and the air flow rate. Operation control method of blow air conditioning system. 3. A floor blow air conditioner that blows the conditioned air upward from a floor blow outlet by supplying conditioned air to a closed space formed under the floor, and a vertical window having a blow outlet on an upper surface and provided on a side wall. A perimeter air conditioner that blows out conditioned air upward along the line, and detects a room temperature and calculates a set temperature value and a blowing amount value of the perimeter air conditioner obtained by calculating based on the room temperature and a stored predetermined condition value. A control device that sends the signal to a control circuit of the perimeter air conditioner and controls the perimeter air conditioner.