JP2009264607A - Air conditioning system - Google Patents

Abstract

An object of the present invention is to suppress uneven temperature distribution in an entire room of a room in which a plurality of indoor units are installed.
SOLUTION: A plurality of indoor units 12 (12a to 12c) having an air outlet 18 for blowing air from a ceiling surface into a room and installed on the back of the ceiling of the same room, and air outlets of the indoor units are provided. The air conditioner system is configured by including louvers 20 and 22 that are variably provided with respect to the blown air, and airflow control means 16 that controls the flow direction of the blown air by controlling the angle of the louver of each indoor unit. . In particular, the air flow control means 16 circulates the entire room by controlling the louver angle of each indoor unit so that the air blown out from each indoor unit flows in the direction of the same wall surface of the room along the ceiling surface. It is characterized in that a circulating airflow 30 is generated.
[Selection] Figure 1

Description

  The present invention relates to an air conditioning system, and more particularly to a technique for suppressing temperature distribution unevenness in a room in which a plurality of indoor units are installed.

  In recent years, in order to eliminate uneven temperature distribution in the entire room, it has been studied to circulate room air using, for example, a circulator or to circulate room air using air blown from an indoor unit of an air conditioner. Has been.

  Such indoor temperature distribution unevenness is considered to be particularly remarkable in a relatively large room where a plurality of indoor units are installed in the same room. Therefore, for example, Patent Literature 1 describes that the indoor temperature distribution unevenness of a room in which a plurality of indoor units are installed is suppressed.

  Specifically, the ambient temperature of each indoor unit is detected, and the indoor unit that has not reached the set temperature is allowed to continue cooling or heating operation, and the indoor unit that has reached the set temperature is not stopped but blown. It is to drive. Accordingly, it is said that the temperature distribution unevenness can be suppressed by stirring the room air.

JP 2000-346432 A

  However, the technique of Patent Document 1 leaves room for consideration for further suppressing temperature distribution unevenness in the entire room.

  That is, the technique of Patent Document 1 is to suppress temperature distribution unevenness by circulating indoor air with an airflow generated by a blowing operation of some indoor units that have reached a set temperature. Therefore, the air in the entire room is not sufficiently circulated only by the air flow from some indoor units, and the temperature distribution unevenness in the entire room may not be sufficiently eliminated. Then, this invention makes it a subject to suppress the temperature distribution nonuniformity of the whole room | chamber interior of the room in which the several indoor unit is installed.

  The air conditioning system of the present invention has a plurality of indoor units installed in the same room having an air outlet for blowing air into the room, and the air outlet of each of the indoor units is variably provided with an angle with respect to the outlet air. And the airflow control means for controlling the flow direction of the blown air by controlling the angle of the blades of each indoor unit.

  In particular, the airflow control means controls the angle of the blades of each indoor unit so that the air blown out from each indoor unit flows in the direction of the same wall surface of the room along the ceiling surface.

  In this way, by controlling the angles of the blades of the plurality of indoor units in an interlocked manner and flowing the air blown from each indoor unit toward the same wall surface of the room, all of the air blown from each indoor unit is made into a circulating air flow. can do. Therefore, an air flow sufficient to circulate the entire room can be generated, and uneven temperature distribution in the entire room can be suppressed.

  In this case, the air flow control is performed so as to select the wall surface direction to which the air blown out from each indoor unit is directed based on the detection value of at least one of the temperature sensor and the illuminance sensor provided corresponding to the installation position of each indoor unit. Means can be configured.

  In other words, for example, when performing cooling operation, it can be seen that the cooling capacity is lower in the indoor area where the temperature sensor having a high detection temperature is provided than in other areas. The direction of the wall surface to which the blown air is directed may be selected so that the blown air passes through. According to this, while suppressing the nonuniformity of the temperature distribution of the whole room | chamber interior, the air-conditioning condition of the area | region where the air-conditioning capability is insufficient can be improved.

  Moreover, when it has the function which restrict | limits the driving capability of at least 1 each indoor unit by demand control or energy saving control, the wall surface to which the blown air heads based on the restriction | limiting information of the driving capability of each indoor unit The airflow control means may be configured to select the direction.

  For example, if an indoor unit with limited driving capability is mixed with an indoor unit without limiting capability, the air conditioning capability is insufficient in the indoor area where the indoor unit with limited driving capability is installed. Conceivable. Therefore, the wall surface direction to which the blown air is directed may be selected so that the blown air from other indoor units passes through this region.

  Moreover, you may comprise an airflow control means so that the wall surface direction which the air blown off for every set time heads may rotate.

  Further, the vane plate is rotatably attached to the first rectangular plate attached to the air outlet so that one side thereof is rotatable and the opposite side of the side attached to the air outlet of the first rectangular plate. When the second rectangular plate is used, the rotation direction of the first rectangular plate with respect to the air outlet and the rotation angle of the second rectangular plate with respect to the first rectangular plate are controlled to flow the air flow of each indoor unit. The airflow control means can be configured to control the airflow.

  In particular, it is preferable to apply the present invention to an air conditioning system in which a plurality of indoor units are installed behind the ceiling of the same room and each blows air from the ceiling surface to the room.

  ADVANTAGE OF THE INVENTION According to this invention, the temperature distribution nonuniformity of the whole indoor room of the room in which the several indoor unit is installed can be suppressed.

  Hereinafter, an embodiment of an air conditioning system to which the present invention is applied will be described. In the following description, the same functional parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a diagram illustrating an example of the overall configuration of the air conditioning system of the present embodiment. As shown in FIG. 1, the air conditioning system 10 is connected to a plurality of indoor units 12 (12 a to 12 c) installed behind the ceiling of the same room, and these indoor units 12 through signal transmission lines 14. The air flow control means 16 for controlling the flow direction of the air blown out from each indoor unit 12 and the outdoor unit connected to each indoor unit 12 by a pipe for circulating the refrigerant, although not shown, etc. And forms a refrigeration cycle. The present invention can be applied not only to a case where a plurality of indoor units are installed on the back of the ceiling, but also to an air conditioning system having a plurality of wall-mounted indoor units, for example.

  Each indoor unit 12 has a plurality of air outlets 18 for blowing air from the ceiling surface into the room, and each air outlet 18 of each indoor unit has a variable angle with respect to the air blown from the indoor unit. Louvers (blade plates) 20 and 22 are provided. In the present embodiment, the air outlet 18 is provided on the window 26 side and the door 28 side opposite to each other with the air inlet 24 for sucking in indoor air, the louver 20 is provided on the window 26 side, and the door 28. A louver 22 is provided on the side.

  In the present embodiment, an example is shown in which each indoor unit 12 has a two-way air outlet. However, the present invention is not limited to this, and the present invention can be applied to an indoor unit that has two or more directions, for example, a four-way outlet.

  As shown in FIG. 1, the louver 20 has a first rectangular plate 20 a whose one side is rotatably attached to the air outlet 18, and an opposite side of the side attached to the air outlet 18 of the first rectangular plate. And a second rectangular plate 20b rotatably attached to the side. The same applies to the louver 22.

  The air flow control means 16 controls the rotation angle of the first rectangular plate 20a with respect to the air outlet 18 and the rotation angle of the second rectangular plate 20b with respect to the first rectangular plate 20a, thereby blowing out air to the window 26 side of the indoor unit. Is configured to control the flow direction. The control of the flow direction of the blown air with respect to the door 28 side is the same.

  The airflow control means 16 is assumed to store the installation position information of each indoor unit 12 in advance, and is configured to be able to grasp the operation information of each indoor unit 12 via the signal transmission line 14. .

  By the way, in the room in which a plurality of indoor units are installed in this way, for example, when each indoor unit 12 individually (independently) controls the louvers 20 and 22 based on a set temperature or the like, the airflow circulating through the entire room Does not occur, and uneven temperature distribution tends to occur. In other words, in an air conditioning system in which a plurality of indoor units are installed in one room, the main purpose is to perform air conditioning in the room by individual operation for each indoor unit. Control is often performed. Then, temperature distribution unevenness is likely to occur in the room depending on the installation location of each indoor unit, the direction of the air blown from each indoor unit, the distance from the indoor unit, and the like.

  Therefore, the airflow control means 16 of the present embodiment controls the angles of the louvers 20 and 22 of each indoor unit so that the air blown from each indoor unit 12 flows in the direction of the same wall surface of the room along the ceiling surface. It has the feature in the point to do.

  For example, as shown in FIG. 1, when it is desired to generate a circulating air flow 30 from the door 28 side to the window 26 side along the ceiling surface, the louver 20 on the window side of each indoor unit is “open”, and the louver 22 on the door side is “ The interlocking control may be performed so as to be “closed”. As a result, the air blown from the louver 20 on the window side of the indoor unit 12c is sucked by the indoor unit 12b, and the air blown from the louver 20 on the window side of the indoor unit 12 is sucked by the indoor unit 12a to generate a circulating air flow 30. On the contrary, when it is desired to generate a circulating airflow from the window 26 side to the door 28 side, the opening and closing of the louvers 20 and 22 may be reversed.

  In this way, by controlling the angles of the louvers 20 and 22 of each indoor unit 12 to flow the air blown from each indoor unit 12 toward the same wall surface of the room, all of the air blown from each indoor unit 12 Can be a circulating airflow. Therefore, even in a large room, an air flow sufficient to circulate the entire room can be generated, and temperature distribution unevenness in the entire room can be suppressed.

  The first rectangular plate 20a and the second rectangular plate 20b constituting the window-side louver 20 are angle-controlled as shown in FIG. 1 so that the blown air from the window-side louver 20 flows along the ceiling surface. . According to this, since there is no problem that the blown air directly hits a person and gives a draft feeling, the blown air can be strengthened. As a result, air in the entire room is sufficiently circulated, so that temperature distribution unevenness can be suppressed.

  By the way, it can be realized by any one of the following modes or an appropriate combination of the following modes that the air flow control means 16 controls the flow of the blown air to which wall in the room.

  For example, temperature sensors 32 (temperature detection thermistors 32 a to 32 c) are provided in the air intake ports 24 of the indoor units 12, and air blown out from the indoor units 12 based on the detection values of the temperature sensors 32 is provided. The direction of the wall surface to go can be selected.

  That is, if the indoor units 12a to 12c are in cooling operation, it can be seen that the cooling capacity is lower in the indoor area where the temperature sensor having a high detection temperature is provided than in other areas. The wall surface direction to which the blown air is directed is selected so that the blown air from the indoor unit passes. For example, assuming that the temperature sensor 32a: 28 ° C., the temperature sensor 32b: 26 ° C., and the temperature sensor 32c: 25 ° C., the air blown from other indoor units passes through the indoor area where the temperature sensor 32a having a high detection temperature is provided. In addition, the circulating air flow 30 is generated with the indoor unit 12c as a reference.

  According to this, while suppressing the nonuniformity of the temperature distribution of the whole room | chamber interior, the air-conditioning condition of the area | region where the air-conditioning capability is insufficient can be improved. In addition, when each indoor unit 12 is performing the heating operation, it is only necessary to allow the air blown out from the other indoor units to pass through the region where the detected temperature is low, contrary to the case of the cooling operation. Further, instead of providing a temperature sensor at the indoor air inlet of each indoor unit 12, a temperature sensor may be provided on the remote control switch 34 or the floor surface facing the installation position of each indoor unit 12.

  Further, by controlling the airflow direction based on both the detected value of the temperature sensor 36 (36a to 36c) provided in each remote control switch 34 and the value of the temperature sensor 32 provided in the air intake port, Wind direction control can be performed with higher accuracy in grasping the situation.

  Also, instead of a temperature sensor, an illuminance sensor is provided on the floor surface facing the installation position of each indoor unit 12, and the wall surface direction to which the air blown out from each indoor unit 12 is directed based on the detection value of the illuminance sensor can do. In other words, in consideration of the radiant heat generated by the solar radiation 38, a circulating air flow can be generated so that air blown out from other indoor units passes through a region where the radiant heat is high during the cooling operation.

  In addition, the wall surface direction to which the air blown out for every set time may be rotated regardless of the detected temperature or the like. That is, a time for switching the wind direction is set in advance, and the direction of the circulating airflow may be switched in order from the window 26 side to the door 28 side direction and from the door 28 side to the window 26 side direction every set time.

  In addition, when the air conditioning system 10 has a function of restricting the operation capability of at least one indoor unit 12 by demand control or energy saving control, the air conditioning system 10 is blown out based on the restriction information on the operation capability of each indoor unit 12. The airflow control means 16 can be configured to select the wall surface direction to which the air is directed.

  That is, when an indoor unit operating with a high driving capability and an indoor unit operating with a low driving capability coexist in one room, the air conditioned air of the indoor unit operating with a high driving capability is low. The wind direction control is controlled so as to be delivered to the indoor unit that is operating with the driving ability.

  FIG. 2 is a diagram showing another example of the overall configuration of the air conditioning system of the present embodiment, showing an example of selecting the wall surface direction to which the blown air is directed based on the restriction information on the driving capability of each indoor unit 12. Is. As shown in FIG. 2, when the operation capacity control is required by energy saving control or demand control and the total capacity is to be operated at 50%, for example, the indoor unit 12a is cooled 100%, 12b is cooled 50%, and 12c is blown. It is conceivable to drive 50% of the capacity by driving. The capacity control of each indoor unit is set so that there are few restrictions in the area where the air conditioning capacity is insufficient, and there are many restrictions in the area where the air conditioning capacity is sufficient.

  The airflow control means 16 grasps the restriction information on the driving ability of each indoor unit, and the air bubbles from the other indoor units 12a and 12b are blown into the indoor area where the indoor unit 12c having the most restricted driving ability is installed. The wall surface direction to which the blown air is directed is selected so that the air passes. As a result, a circulating air flow 30 is generated so that the blown air flows from the window 26 side to the door 28 side along the ceiling surface.

  As mentioned above, according to the air conditioning system of this embodiment, all the blowing air of each indoor unit 12 can be made into a circulating airflow by flowing the air blown out from each indoor unit 12 toward the same wall surface of the room. it can. Therefore, even in a large room, an air flow sufficient to circulate the entire room can be generated, and temperature distribution unevenness in the entire room can be suppressed.

It is a figure which shows an example of the whole structure of the air conditioning system of this embodiment. It is a figure which shows the other example of the whole structure of the air conditioning system of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Air conditioning system 12a-12c Indoor unit 16 Air flow control means 18 Air blower outlet 20,22 Louver 24 Air inlet 30 Circulating air flow 32a-32c Temperature sensor 36a-36c Temperature sensor

Claims (6)

A plurality of indoor units installed in the same room having air outlets for blowing air into the room, and air blades of each indoor unit, the blades provided with a variable angle with respect to the outlet air, In an air conditioning system comprising airflow control means for controlling the flow direction of the blown air by controlling the angle of the blades of the indoor unit,
The air flow control means controls the angle of the blades of the indoor units so that the air blown from the indoor units flows in the direction of the same wall surface of the room along the ceiling surface. Harmony system.   The air flow control means selects a wall surface direction to which air blown from each indoor unit is directed based on a detection value of at least one of a temperature sensor and an illuminance sensor provided corresponding to the installation position of each indoor unit. 1 air conditioning system. Having a function of limiting the operation capability of at least one of the indoor units by demand control or energy saving control;
The air conditioning system according to claim 1, wherein the air flow control means selects a wall surface direction to which the blown air is directed based on restriction information on the driving ability of each indoor unit.   The air conditioning system according to claim 1, wherein the airflow control means rotates a wall surface direction to which air blown out for every set time. The vane plate is rotatably attached to a first rectangular plate having one side rotatably attached to the air outlet and a side opposite to the side attached to the air outlet of the first rectangular plate. A second rectangular plate formed,
The airflow control means controls a rotation angle of the first rectangular plate with respect to the air outlet and a rotation angle of the second rectangular plate with respect to the first rectangular plate, thereby causing a flow direction of the blown air of each indoor unit. The air conditioning system according to claim 1, wherein the air conditioning system is controlled.   2. The air conditioning system according to claim 1, wherein each of the plurality of indoor units has an air outlet that blows air from the ceiling surface into the room, and is installed on the back of the ceiling of the same room.

Images