JP2005326106A - Building frame heat storage air conditioning system of ductless system using concealed-in-ceiling type air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To resolve a problem in a conventional building frame heat storage air conditioning system using a concealed-in-ceiling type air conditioner which is expensive since a change-over mechanism using a change-over damper or the like, and its control mechanism are necessary for changing usage of air-conditioned air from the air conditioner between for air conditioning and for heat storage. <P>SOLUTION: A composition of the building frame heat storage air conditioning system is proposed wherein an air barrier blowing fan 6 is provided below a window in one side of a room, an air barrier ceiling blowing fan 7 is provided in one side in a ceiling space, a suction opening 8 connected to its suction side is provided on a ceiling face, the concealed-in-ceiling type air conditioner 9 is installed in the one side in the ceiling space 3, an air-conditioned air blowout opening 11 connected to its blowout side is provided adjacent to a floor building frame 1, a blowout side of the suction fan is connected to a suction side of the air conditioner and it is communicated with the ceiling space by a communication port via a back flow preventing damper 13, and an anemo-fan type blowout opening of the ductless system is provided on the ceiling face. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a duct heat storage air-conditioning system using a ceiling concealed air conditioner.

  Recently, air conditioners are stored outside the time when air conditioning is required, for the purpose of improving the indoor environment immediately after the start of the air conditioner, or for the purpose of reducing the capacity of the heat source and air conditioner by peak cut of the air conditioning load. Various housing heat storage air-conditioning systems have been proposed that can operate and store heat (including cold heat) in advance in the floor frame, and use this stored heat at times when air conditioning is required.

  As an example of such an enclosure heat storage air conditioning system, a ceiling concealed air conditioner is used, which is installed in the ceiling space between the ceiling and the upper-floor floor frame, and runs along the wall surface of the upper-floor floor frame from this air-conditioner. Patent Document 1 discloses an air conditioning system that ejects conditioned air in a direction and stores heat in a floor frame of an upper floor.

The structure and operation of a housing heat storage air conditioning system using such a ceiling concealed air conditioner will be described with reference to FIGS.
3 and 4, the symbol a indicates an upper floor frame, b indicates a ceiling surface, and c indicates a ceiling space between them. A ceiling concealed air conditioner d such as a packaged air conditioner (PAC) or a fan coil unit (FCU) is installed on one side of the ceiling space c, and an appropriate number of ceiling outlets are provided on the ceiling surface b. e and the ceiling inlet f are comprised.
The outlet side of the air conditioner d is configured to selectively communicate with the ceiling outlet e and the heat storage outlet i via the outlet air path h provided with the switching mechanism g. That is, the blowout air path h is composed of a common duct from the blowout side of the air conditioner d and a duct branched therefrom, and switching dampers j and k such as a motor switching damper are installed in each duct, and these switching are performed. A switching mechanism is configured by the dampers j and k. On the other hand, the suction side of the air conditioner d is configured to communicate with the ceiling space c via the ceiling suction port m. In addition, the code | symbol n is a living room and o is a window.

In the above configuration, as shown in FIG. 3, in the heat storage time zone, the switching damper j is closed, the switching damper k is opened, and the air conditioner d is operated. In this state, the conditioned air from the discharge side of the air conditioner d reaches the heat storage outlet i through the duct, and is jetted into the ceiling space c in a direction along the wall surface of the upper floor a. The conditioned air thus ejected flows along the wall surface over a long distance due to the Coanda effect, and in this case, heat exchange with the upper floor a is well performed, and therefore the upper floor The heat is stored in a.
Since the air in the ceiling space c is sucked to the suction side of the air conditioner d through the ceiling suction port m, the air flows along the wall surface of the upper floor frame a while exchanging heat as described above. At the end, the conditioned air leaves the wall surface, reverses, flows under the upper floor casing a, reaches the suction port m in the ceiling, and returns from here to the suction side of the air conditioner d.
In this operation, since the switching damper j is closed, the conditioned air from the air conditioner d does not flow into the living room space 15 and air conditioning is not performed.

Next, as shown in FIG. 4, in the air conditioning time zone, the switching damper j is opened, the switching damper k is closed, and the air conditioner d is operated.
The conditioned air from the discharge side of the air conditioner d reaches the ceiling outlet e through the switching damper j, flows into the living room n from here, and is supplied to the air conditioning. On the other hand, the air supplied to the air conditioner then reaches the ceiling space c from the ceiling suction port f, flows in the ceiling space c, and returns to the suction side of the air conditioner d from the ceiling suction port m in the same manner as the heat storage operation. .
In this way, the air supplied to the air conditioner n flows through the ceiling space c along the wall surface of the upper floor frame a, and heat exchange with the upper floor frame a is performed. Since the heat stored in the air conditioner d is recovered and returned to the air conditioner d in this state, the load on the air conditioner d can be reduced, and thus the heat stored can be effectively utilized during the air conditioning time period.
JP 2001-56133 A

In the housing heat storage air conditioning system using the ceiling concealed air conditioner described in Patent Document 1 above, switching by switching dampers j, k, etc. is performed to switch the air conditioned air from the air conditioner to air conditioning and heat storage. Since the mechanism g is necessary and the control mechanism is also necessary, there is a problem that the cost becomes high.
Therefore, the present invention aims to solve such a problem.

  In order to solve the above-described problems, in the present invention, an air barrier blowing fan is provided below a window on one side of a living room, an air barrier ceiling suction fan is provided on one side in a ceiling space, and the suction connected to the suction side An opening is provided on the ceiling surface, a ceiling concealed air conditioner is installed on one side of the ceiling space, and an air-conditioning air outlet connected to the outlet side is provided close to the floor frame, on the suction side of the air conditioner Is connected to the outlet side of the suction fan and communicated with the ceiling space through the backflow prevention damper, and the ceiling surface is provided with a ductless anemofan type outlet. This is a ductless heat storage air conditioning system using a duct-type air conditioner.

  Further, the present invention proposes to provide a backflow prevention damper on the upstream side of the anemofan-type outlet in the above configuration.

  In the housing heat storage air-conditioning system of the present invention, the air conditioner is operated without operating the anemo fan type air outlet, the air barrier blowout fan, and the air barrier ceiling suction fan during heat storage. Since the air barrier ceiling suction fan is not operated, the backflow prevention damper on the suction side of the air conditioner is opened. For this reason, the air-conditioned air blown out from the air-conditioned air outlet flows along the wall surface of the floor frame, exchanges heat, then reverses and flows through the ceiling space, and from the communication port through the backflow prevention damper, the air-conditioner suction side It can be recirculated and used for circulation to store heat in the floor frame.

  On the other hand, during heat dissipation (air conditioning), when the anemofan blowout port, air barrier blowout fan, and air barrier ceiling suction fan are operated together with the air conditioner, the reverse flow prevention damper on the suction side of the air conditioner is closed. For this reason, the conditioned air blown out from the air-conditioned air outlet flows along the wall surface of the floor frame to exchange heat, and after being separated from the wall surface, it is not sucked into the communication port on the suction side of the air conditioner. It is sucked into the air outlet and blown into the living room for air conditioning. On the other hand, the air in the room is sucked into the air barrier blower fan, blown upward along the window to form the air barrier, and then sucked in from the suction port by the air barrier ceiling suction fan, and from the discharge side to the suction side of the air conditioner To reflux. By such an operation, the heat stored in the floor frame at the time of heat storage can be used for air conditioning at the time of heat dissipation.

  From the above, the present invention eliminates the need for a switching mechanism such as a switching damper and their control mechanism, and also eliminates the need for a duct for blowing air-conditioned air into the living room. Can be configured.

  If an anti-backflow damper is installed upstream of the anemofan outlet and closed during heat storage, it will be effective in preventing part of the conditioned air flowing in the ceiling space from leaking into the room during heat storage. Heat storage.

Next, an embodiment of a frame heat storage air conditioning system according to the present invention will be described with reference to the accompanying drawings. FIG. 1 and FIG. 2 are systematic cross-sectional views conceptually showing the housing heat storage air-conditioning system according to the present invention together with the operation status during heat storage and heat dissipation (air conditioning).
Reference numeral 1 is a floor frame, 2 is a ceiling surface, and 3 is a ceiling space between them. Reference numeral 4 denotes a living room, and 5 denotes a window formed on one side of the living room 4.
An air barrier blowing fan 6 is provided below the window 5, an air barrier ceiling suction fan 7 is provided on one side of the ceiling space 3, and a suction port 8 connected to the suction side is provided on the ceiling surface 2. A ceiling concealed air conditioner 9 is installed on one side of the space 3, and an air conditioned air outlet 11 connected to the blowout side 10 is provided in the vicinity of the floor frame 1. While connecting the blow-out side of the suction fan 7, it communicates with the ceiling space 3 through the backflow prevention damper 13 through the communication port 14, and the ceiling surface 2 is provided with a ductless anemofan-type blower outlet 15. Further, a backflow prevention damper 16 is provided on the upstream side of the anemofan type outlet.

  In the above configuration, when storing heat, the anemofan blowout port 15, the air barrier blowout fan 6, and the air barrier ceiling suction fan 7 do not operate, and the anemofan is stopped in the backflow prevention damper 16 of the anemofan blowout port 15. Keep closed. In this state, the air conditioner 9 is operated.

  Since the air barrier ceiling suction fan 7 is not in operation, no pressure is applied to the suction side 12 of the air conditioner 9. Accordingly, the backflow prevention damper 13 is in an open state. For this reason, the conditioned air of the air conditioner 9 blown out from the conditioned air outlet 11 flows along the wall surface of the floor frame 1 and exchanges heat, then reverses and flows through the ceiling space 3, and prevents backflow from the communication port 14. It returns to the suction side 12 of the air conditioner 9 through the damper 13 and is circulated. Thus, the conditioned air can exchange heat when flowing along the wall surface of the floor frame 1 to store heat in the floor frame 1. That is, during heating, heat is supplied to the floor case 1 by conditioned air having a temperature higher than that of the floor case 1, and during cooling, heat is taken from the floor case 1 by conditioned air having a temperature lower than the temperature of the floor case 1. In other words, cold energy can be supplied to store heat.

  Next, at the time of heat radiation (air conditioning), the anemofan blowout port 15, the air barrier blower fan 6, and the air barrier ceiling suction fan 7 that have been stopped during the heat storage described above are operated. The backflow prevention damper 16 of the anemo fan type outlet 15 is opened because the anemo fan is operated.

  In this operation, the conditioned air blown out from the conditioned air outlet 11 flows along the wall surface of the floor case 1 and exchanges heat. At this time, the heat stored in the floor case 1 is recovered and separated from the wall surface. The air is sucked into the anemofan type air outlet 15 through the backflow prevention damper 16 in the open state, and then blown out into the living room 4 for air conditioning.

  On the other hand, the air in the living room 4 is sucked into an air barrier blowing fan 6 disposed on one side of the living room 4 and blown upward along the window 5 to form an air barrier. The air is sucked into the ceiling suction fan 7 and recirculates from the discharge side to the suction side 12 of the air conditioner 9. Thus, since air pressure is applied to the suction side 12 of the air conditioner 9 by the air barrier ceiling suction fan 7, the backflow prevention damper 13 is maintained in a closed state, so that air in the ceiling space 3 is air-conditioned via the communication port 14. It does not flow into the suction side 12 of the machine 9.

  Accordingly, all of the conditioned air in the ceiling space 3 blown out from the conditioned air outlet 11 is sucked into the anemofan type outlet 15 through the open backflow prevention damper 16 and blown out into the living room 4 from here. To be used for air conditioning.

  Since the present invention is as described above, a switching mechanism using a switching damper or the like and a control mechanism thereof are unnecessary, and a duct is not necessary for blowing air-conditioned air into a living room. The system can be configured.

  The backflow prevention damper provided upstream of the anemofan-type air outlet closes when storing heat, so it is effective to prevent part of the conditioned air flowing in the ceiling space from leaking into the room during heat storage. Heat storage.

It is systematic sectional drawing which represented notionally the housing thermal storage air conditioning system which concerns on this invention with the driving | running state at the time of thermal storage. It is systematic sectional drawing which represented notionally the housing thermal storage air conditioning system which concerns on this invention with the driving | running state at the time of heat radiation (at the time of air conditioning). It is systematic sectional drawing which represented notionally the conventional frame heat storage air-conditioning system using the ceiling concealment type | formula air conditioning with the operation condition at the time of heat storage. It is systematic sectional drawing which represented notionally the conventional frame heat storage air conditioning system using the ceiling concealment type | formula air conditioning with the driving | running state at the time of heat radiation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor frame 2 Ceiling surface 3 Ceiling space 4 Living room 5 Window 6 Air barrier blowing fan 7 Air barrier ceiling suction fan 8 Suction port 9 Ceiling concealed air conditioner 10 Blowing side 11 Air conditioning air outlet 12 Suction side 13 Backflow prevention damper (of air conditioner (Suction side)
14 Communication port 15 Anemofan type outlet 16 Backflow prevention damper (Anemofan type outlet)

Claims (2)

An air barrier blowing fan is provided below the window on one side of the living room, an air barrier ceiling suction fan is provided on one side of the ceiling space, and a suction port connected to the suction side is provided on the ceiling surface. A ceiling concealed air conditioner is installed on the side, and an air-conditioning air outlet connected to the outlet side is provided close to the floor frame, and the outlet side of the suction fan is connected to the suction side of the air conditioner, and the reverse flow A ductless heat storage air-conditioning system using a concealed ceiling air conditioner characterized in that it is connected to the ceiling space through a prevention damper and connected to the ceiling space, and a ductless anemofan air outlet is provided on the ceiling surface. 2. A ductless heat storage air conditioning system by a ductless system using a concealed ceiling air conditioner according to claim 1, wherein a backflow prevention damper is provided upstream of the anemofan type air outlet.

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