JPH0541315Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a fire damper device for an air source heat pump type air conditioner and a fire damper used in this device.

(Prior art) In order to comply with the fire prevention standards established for air equipment in buildings, conventional fire damper equipment has been installed in an opening a in the outer wall of the building and in the back of the case of the air conditioner, as shown in Figure 5. The provided outside air intake port b was connected with a wind pipe c of an appropriate length, and a fire damper d was pivotally supported within the wind pipe c so as to be openable and closable.

(Problem to be solved by the invention) In the above conventional means, when installing the fire damper d, it is necessary to position the air conditioner indoors by the length of the wind pipe c from the inner surface of the outer wall because of the air pipe c. However, this reduced the space available indoors, making it uneconomical for indoor use.

(Means for Solving the Problems) In order to solve the above problems, the present invention aims to replace the outside air intake opening on the back side of the case of an air conditioner installed in a building with the outside air intake port as close as possible to the inner surface of the opening provided on the outer wall of the building. A fire prevention damper is attached to the open end of the outside air intake inside the case and rotatably supported on one side so that it is normally open and automatically closes when it senses the heat of the fire. It is characterized by having
Further, as a fire prevention damper which is advantageous for use in the above device, the damper is biased in the closing direction by a spring, and in the open state against the spring, the lock is automatically released by the change of the heat sensitive member. It is characterized in that it is locked with a locking mechanism.

(Function) The fire prevention damper device according to the present invention is installed so that the air conditioner 1 is placed close to the outer wall 3 side and an air passage for outside air intake is formed by the opening 2 on the back of the case and the opening 4 on the outer wall surface. Since the damper 5 is installed at the inner end of the outside air intake air path inside the case of the air conditioner 1, the air conditioner 1 can be placed as close to the wall as possible, making effective use of a wide indoor floor space. The fire prevention damper 5 has a locking mechanism that is released by the action of a spring and a deformation action of a heat-sensitive member, and automatically closes the outside air intake when fire heat is detected. It is possible to take emergency measures and prevent fire from entering or exiting from the outside air intake.

(Example) Embodiments of the present invention will be described with reference to the drawings.

In the drawings, reference numeral 1 denotes an air source heat pump type air conditioner installed indoors, with the outside air intake 2 provided on the back of the case as close as possible to the opening 4 provided on the outer wall 3, and both openings 2, 4 A fire prevention damper 5 is provided rotatably around a shaft 6 on one side to open and close the open end of the outside air intake air path within the case of the air conditioner 1. The fire damper 5 is normally in an open state so as not to interfere with the intake of outside air, but when the fire heat is felt, the fire damper 5 is automatically changed from the open state to the closed state.
The automatic closing means for the fire prevention damper 5 includes a spring 7 acting on the damper 5 supported by a shaft 6 as shown in FIG. This is held in the open state by the locking mechanism 8 against the spring force as shown by the solid line in FIG.

The locking mechanism 8 is, for example, a tube 8 as shown in FIG.
A locking rod 8b having a locking piece 8c at the upper end is inserted into the interior of the locking rod 8b, and the lower end of the locking rod 8b is connected to the pipe 8a by a fuse 8d, and the upper locking piece 8c of the locking rod 8b is to lock the damper 5.

Therefore, when fire is sensed, the locking piece 8c that locks the damper 5 as a heat-sensitive member melts by melting, and the locking piece 8c, which locks the damper 5, becomes able to move upward as shown by the phantom line in FIG. 4 and releases the lock. The damper 5 is automatically closed by the bias of the spring 7.

(Effects of the invention) According to the invention, since the fire damper is installed inside the air conditioner, the air conditioner can be installed close to the wall, and the area occupied by the air conditioner is therefore reduced. There is an advantage that other floor surfaces can be widely used, and the damper has a locking mechanism using a spring and a heat-sensitive member to ensure automatic closing, making it advantageous as fire prevention equipment for outside air intake ventilation facilities.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main parts, Fig. 3 is a plan view of the fire damper, and Fig. 4 is an example of the locking mechanism. FIG. 5 is a side view showing a conventional example. 1...Air conditioner, 2...Outside air intake, 3...
Building outer wall, 4...Opening, 5...Fire damper, 6
...damper mounting shaft, 7...spring, 8...locking mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Connecting an outside air intake 2 opened at the back of the case of an air conditioner 1 installed in a building as close as possible to the inner surface of an opening 4 provided in the outer wall 3 of the building. Inside the case, at the open end of the outside air intake port 2, there is provided a fire damper 5 that is rotatably supported on one side and is normally open, but automatically closes when the heat of the fire is felt. Fire damper device in harmonizer. 2 The damper 4 is urged to rotate in the closing direction by the spring 7, and the locking mechanism 8 is automatically released by the change of the heat-sensitive member in the open state against the spring. A fire damper in an air conditioner that is locked in place.