JP2013036719A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system effective as cold draft countermeasures in winter and capable of reducing costs.SOLUTION: This air conditioning system is composed of a slit suction opening 13 formed on a floor surface of a perimeter zone, a first duct D1 having a suction opening 41 on an underfloor chamber 11 of a lower section of the floor surface, a second duct D2 having a supply opening 45 to an indoor air conditioner disposed on a ceiling chamber 21 of a ceiling upper section of an interior zone, and a fan 43 for distributing air from the first duct D1 toward the second duct D2.

Description

  The present invention relates to an air conditioning system in which a cold draft countermeasure is taken in a perimeter zone on a window side.

  When the temperature is lower than the room temperature, warm air in the room touches the window surface and the temperature is lowered, so that a phenomenon in which the air with the lowered temperature falls along the window surface occurs. Such a flow of air (cold air) is called a cold draft, and is generally known as a cause of lowering the temperature in the vicinity of the window to impair indoor comfort.

  In view of this, an air conditioning system has been proposed in which a cold draft countermeasure is taken in the perimeter zone of the windowsill.

For example, Patent Document 1 (Japanese Patent Publication No. 7-21274) discloses that a double window structure type air flow window is used in order to reduce the air conditioning load in the room and save energy. . It has also been proposed to use a push-pull window or the like as a countermeasure against cold draft.
Japanese Examined Patent Publication No. 7-21274

  Airflow windows and push-pull windows are used as cold draft countermeasures in the prior art perimeter zone, but these techniques are mainly used in summer, and the air is adjusted in the direction of hot air flow. It is flowing upward from. In the winter season, the air flow in the cold draft is from the top to the bottom, so the direction is the opposite. However, if there are double windows, it was effective as a cold draft countermeasure.

  However, when taking measures against cold drafts by the conventional technology, there is a problem that equipment such as a double window, a push fan, and a pull fan has to be prepared, which is very expensive.

  The present invention solves the above-mentioned problems, and the invention according to claim 1 is a first embodiment having a slit suction port provided on the floor surface of the perimeter zone and a suction port in a subfloor chamber below the floor surface. A duct, a second duct having a blowout opening for an indoor air conditioner provided in a ceiling chamber at an upper ceiling of the interior zone, and a fan for blowing air from the first duct toward the second duct. It is a featured air conditioning system.

  Moreover, the invention which concerns on Claim 2 sets the temperature of the temperature sensor which detects the temperature of the airflow sucked in by the said slit suction port, and the temperature of the airflow ventilated by the said indoor air conditioner in the air conditioning system of Claim 1 A remote controller that controls the drive of the fan, and a main controller that issues a control command to the fan controller based on the temperature detected by the temperature sensor and the temperature set by the remote controller. It is characterized by having.

According to the air conditioning system of the present invention, the winter cold draft flowing from the top to the bottom is sucked from the slit suction port provided on the floor surface of the perimeter zone. In addition, since facilities such as a double window, a push fan, and a pull fan are unnecessary, the cost can be suppressed.

It is the figure which looked at the outline of space R where the air-conditioning system concerning the embodiment of the present invention was applied from the side. It is a schematic plan view of the space R to which the air conditioning system according to the embodiment of the present invention is applied. 1 is a simplified block diagram of an air conditioning system according to an embodiment of the present invention. It is a figure which shows the flowchart of the example of control in the air conditioning system which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of an outline of a space R to which an air conditioning system according to an embodiment of the present invention is applied. FIG. 2 is a schematic plan view of the space R to which an air conditioning system according to an embodiment of the present invention is applied. FIG.

  The space R can be virtually divided into two zones: a perimeter zone within a range of several meters from the window 12 and other interior zones. The floor surface of the space R is composed of an OA floor 10, and an underfloor chamber 11 is formed between the OA floor 10 and the slab.

  Further, as shown in FIG. 2, a slit suction port 13 is provided in parallel with the window 12 on the OA floor 10 in the perimeter zone near the window 12. The cold draft is guided to the underfloor chamber 11 by the slit suction port 13. In the air conditioning system according to the present invention, the cold draft guided to the slit suction port 13 is used to assist the cooling operation of the indoor air conditioner 32 and the indoor air conditioner 33 arranged in the interior zone. Therefore, it is possible to use the present invention more effectively when the window 12 faces the north side (when it is in the northern hemisphere such as Japan).

  Further, a temperature sensor 120 that detects the temperature of the air flow of the cold draft guided to the slit suction port 13 is provided below the slit suction port 13. The position where the temperature sensor 120 is provided need not be limited to the position below the slit suction port 13.

  An indoor air conditioner 31, an indoor air conditioner 32, and an indoor air conditioner 33 are arranged in the ceiling chamber 21 in the upper part of the ceiling 20 where the ceiling suction port 22, the ceiling suction port 23, and the ceiling suction port 24 are provided. Among these indoor air conditioners, the indoor air conditioner 31 and the indoor air conditioner 32 are arranged on the ceiling corresponding to the interior zone, and the indoor air conditioner 33 is arranged on the ceiling corresponding to the perimeter zone. . Each indoor air conditioner is provided with a plurality of pipes, which are not shown.

  The air adjusted by the indoor air conditioner 31 is from the ceiling outlet 34, the air adjusted by the indoor air conditioner 32 is from the ceiling outlet 35, and the air adjusted by the indoor air conditioner 33 is from the ceiling outlet 36, Each is blown out to the space R.

The first duct D <b> 1 is a duct provided between the underfloor chamber 11 and the ceiling chamber 21. The first duct D <b> 1 is provided with a suction port 41 in the underfloor chamber 11 below the OA floor 10. It is assumed that the air flow of the cold draft guided to the slit suction port 13 is sucked into the duct from the suction port 41 of the first duct D1 through the underfloor chamber 11.

  In the upper part of the ceiling of the interior zone, a second duct D2 having an outlet 45 for the indoor air conditioner 31 is provided.

  A fan 43 is provided between the first duct D1 and the second duct D2. When the fan 43 is driven, air is blown from the first duct D1 toward the second duct D2, and the cold draft airflow sucked from the suction port 41 of the first duct D1 is sent from the blowout port 45. The indoor air conditioner 31 can be sprayed.

  Further, the second duct D2 is branched into the third duct D3 in the middle thereof. The third duct D3 has an outlet 47 for the indoor air conditioner 32 disposed in the ceiling chamber 21 corresponding to the interior zone. Therefore, when the fan 43 is driven, the cold draft air flow sucked from the suction port 41 of the first duct D1 is blown also from the blow-out port 47 to the indoor air conditioner 32.

  As described above, the indoor air conditioner 31 and the indoor air conditioner 32 laid out at the position corresponding to the interior zone can be configured to be able to blow a cold draft airflow by driving the fan 43. Yes. Because of the heat generation of the OA equipment, the indoor air conditioner 31 and the indoor air conditioner 32 that are normally arranged at the position corresponding to the interior zone are generally air-cooled even in winter, As described above, by blowing the cold draft to the indoor air conditioner 31 and the indoor air conditioner 32 during the cooling operation, it is possible to reduce the load of each device.

  A remote controller 110 is attached to the wall surface of the space R, and the remote controller 110 instructs the indoor air conditioner 31, the indoor air conditioner 32, and the indoor air conditioner 33 to operate commands (operation, stop, operation mode, air volume, Wind direction setting, temperature setting, etc.).

  According to the air conditioning system of the present invention, since the cold draft in winter flowing from the top to the bottom is sucked from the slit suction port 13 provided on the floor surface of the perimeter zone, the cold draft in winter is used. This is effective as a countermeasure, and does not require equipment such as a double window, a push fan, or a pull fan, so that the cost can be reduced.

  Next, a control example in the air conditioning system configured as described above will be described. FIG. 3 is a simplified block diagram of an air conditioning system according to an embodiment of the present invention. In FIG. 3, a main controller 100 is composed of a general microcomputer having a calculation unit and a storage unit, and is responsible for main control of the air conditioning system.

  The temperature sensor 120 detects the temperature of the air flow of the cold draft guided to the slit suction port 13, and the temperature data detected by the temperature sensor 120 is input to the main controller 100 to perform control. This is the reference value.

  Further, the fan 43 is driven or stopped according to a control command input from the main controller 100.

Next, an example of a control algorithm in the air conditioning system having the above block configuration will be described. FIG. 4 is a diagram illustrating a flowchart of a control example in the air conditioning system according to the embodiment of the present invention.

  The flowchart shown in FIG. 4 is a routine for determining how to drive the fan 43. For example, the fan 43 can be appropriately controlled after the air conditioning system is activated.

  In FIG. 4, when the flow is started in step S100, the temperature data Ts detected by the temperature sensor 120 is acquired in the subsequent step S101, and the set temperature To is acquired in step S102.

  In the next step S103, it is determined whether Ts <To is satisfied. When the determination in step S103 is YES, it means that the cold draft airflow temperature Ts is lower than the set temperature To. Therefore, the fan 43 is driven to convert the cold draft airflow into the indoor air conditioner 31 and the indoor air conditioner 32. The load on the indoor air conditioner 31 and the indoor air conditioner 32 is reduced.

  On the other hand, when the determination in step S103 is NO, the air temperature Ts of the cold draft is higher than the set temperature To, so the fan 43 is not driven and the cold draft is not used.

  By performing the control as described above, the load on the indoor air conditioner 31 and the indoor air conditioner 32 can be reduced, so that the energy efficiency can be increased.

  As described above, according to the air conditioning system according to the present invention, the winter cold draft flowing from the top to the bottom is sucked from the slit suction port provided on the floor surface of the perimeter zone. It is effective as a countermeasure against drafts, and costs such as double windows, push fans, pull fans, etc. are not required, and costs can be reduced.

DESCRIPTION OF SYMBOLS 10 ... OA floor 11 ... Underfloor chamber 12 ... Window 13 ... Slit inlet 20 ... Ceiling 21 ... Ceiling chamber 22 ... Ceiling inlet 23 ... Ceiling inlet 24 ... Ceiling inlet 31 ... Indoor air conditioner 32 ... Indoor air conditioner 33 ... Indoor air conditioner 34 ... Ceiling outlet 35 ... Ceiling outlet 36 ... Ceiling outlet 41 .... Duct suction port 43 ... Fan 45 ... Duct outlet 47 ... Duct outlet 50 ... External air conditioner 51 ... Variable air volume control device 52 ... Ceiling outlet 54 ... Duct inlet 55 ... Variable air volume control device 100 ... Main controller 110 ... Remote controller 120 ... Temperature sensor

Claims (2)

A slit inlet on the floor of the perimeter zone;
A first duct having a suction port in an underfloor chamber below the floor;
A second duct having an outlet for an indoor air conditioner provided in a ceiling chamber at an upper ceiling of the interior zone;
An air conditioning system comprising: a fan that blows air from the first duct toward the second duct. A temperature sensor for detecting the temperature of the airflow sucked at the slit suction port;
A remote control for setting the temperature of the airflow blown by the indoor air conditioner;
A fan controller for controlling the driving of the fan;
The air conditioning system according to claim 1, further comprising: a main controller that issues a control command to the fan controller based on a temperature detected by the temperature sensor and a temperature set by the remote controller.

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