JP2733323B2 - Duct air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct type air conditioner concealed and installed behind a ceiling or the like.

2. Description of the Related Art Generally, as shown in FIG. 3, a duct type air conditioner has a built-in indoor heat exchanger 32 in a space above a ceiling 31 and a blower 33 that ventilates the indoor heat exchanger 32. Body
An outlet chamber 37 having an outlet 36 provided on a ceiling surface 35 and an inlet chamber 40 having an inlet 38 are connected to the main body 34 by ducts 41, respectively. And, an outdoor unit (not shown) for configuring a refrigeration cycle by connecting to this duct type air conditioner is separately installed,
The cooling / heating operation can be performed by connecting the indoor heat exchanger 32 and the refrigerant pipe in the main body 34.

Problems to be Solved by the Invention In such a conventional configuration, cooling and heating operations and dehumidification operations can be performed. However, in a living room where a living and kitchen, which are increasing in recent years, are integrated as a one-room type, tobacco and Ventilation fans and lamp hoods are often installed for the purpose of discharging odors and smoke from cooking, etc. to the outdoors.When these devices are operated, not only does the cooling / heating load increase rapidly, but also the airtightness. In a high-rise house, there is a problem that it is not possible to cope with various problems such as a negative pressure in a living room, a flame of a gas stove extinguishes, and difficulty in opening and closing a door. Therefore, recently, in order to solve such various problems, a total heat exchange type ventilation fan, a heat exchange air device, and the like have been developed, and a device that automatically operates in combination with a differential pressure detection device has been commercialized. . However, even if such products are used in combination, initial costs and construction costs are not only increased, but it is difficult to control the necessary driving operation automatically by damaging the interior and linking the various functions. There are issues such as strange.

The present invention solves such a problem, and provides an integrated duct-type air conditioner that can cope with sudden fluctuations in cooling and heating loads due to the effects of ventilation and the like, and that can automatically control necessary functions. It is intended to provide

Means for Solving the Problems In order to solve this problem, the present invention provides a duct connection port for taking in outside air, and a duct for adjusting the amount of outside air taken into a suction chamber for indoor air provided in the air conditioner body. An electric damper is provided, and a means for detecting indoor negative pressure and a means for selecting and operating various driving operations are further provided.

Action With the above-described configuration, it is possible to respond to a sudden change in the cooling / heating load that occurs during the operation of the ventilation fan or the lamp hood provided in the same living room, detect the indoor negative pressure, and determine that the negative pressure is equal to or higher than a preset value. When this happens, the electric damper is opened and the required amount of outside air is taken in so as to eliminate the negative pressure in the room, and the room is cooled or heated by the indoor heat exchanger and supplied to the room.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. In the figure, a main body 1 of a duct type air conditioner is suspended and fixed to a slab 3 or the like by suspension bolts 2, is installed in the back of a ceiling 4, and has a suction port 5 and an air filter 6.
Are connected via a suction duct 8 and a blowing chamber 10 having a blowing port 9 and the like via a blowing duct 11. An indoor blower 12 and an indoor heat exchanger 13 are provided in the main body 1 of the duct type air conditioner, and an outside air intake duct 14 is provided in the suction chamber 7 at a position opposed to the suction duct 8.
An outside air intake 15 is provided on the outdoor side of the outside air intake duct 14. In the vicinity of the suction chamber 7 of the outside air intake duct 14, there is provided an electric damper 17 which rotates by an electric motor (not shown) provided in an electric motor case 16, and a diaphragm and a diaphragm are provided in the electric motor case 16. A differential pressure detecting device (not shown) which is constituted by a limit switch and serves as a means for detecting the indoor negative pressure is provided, and the diaphragm thereof has an indoor pressure pipe 18 for sampling the indoor pressure and an outdoor pressure. The outside pressure pipe 19 for sampling the air is connected, and the other end is connected to the suction chamber 7 and the outside air intake duct, respectively.
It is connected to 14 to detect pressure. Further, the motor case 16 is provided with a signal line 20 for controlling the operation of the indoor blower 12 via an operation control device (not shown) as a means for performing a selection operation.

In the above configuration, when performing a normal cooling and heating operation,
Since there is almost no difference between the indoor pressure and the outdoor pressure detected by the differential pressure detecting device (not shown) provided in the motor case 16, the electric damper 17 is in the closed position, and the general duct type air is used. It fulfills the function as a harmony machine. When a ventilation fan and a lamp foot (both not shown) separately provided in the room where the duct type air conditioner is installed are simultaneously operated, the indoor pressure detected by the differential pressure detecting device and the outdoor pressure are detected. Since the difference from the pressure increases, the operation of the indoor blower 12 is controlled via the signal line 20 and the operation control device. That is, outside air intake duct
The air flow is increased via 14 to eliminate indoor negative pressure and increase the cooling and heating output. Further, when the cooling / heating load is very small in the interim period, the indoor blower 12
A remote control switch (not shown) for selecting and operating various operation operations may be provided so that the indoor negative pressure may be merely eliminated by the operation of the vehicle, and the operation of taking in the outside air may be positively performed by the user's request. This makes it even easier to use.

Advantages of the Invention As is clear from the description of the above embodiment, the present invention provides an external air intake duct and an electric damper for adjusting an external air intake amount in an indoor air intake chamber connected to a main body of an air conditioner by a duct. It is equipped with a pressure detection device in the motor case connected to the motor and a differential pressure detection device that detects indoor negative pressure, and various operations are selected and operated by the remote control switch. In addition to eliminating indoor negative pressure, it can also respond to sudden fluctuations in cooling and heating loads, and functions as a preheating air supply device during winter when the negative pressure during exhaust operation is eliminated, as well as in the intermediate period. It has the effect of exhibiting functions such as taking in outside air and cooling by the outside air.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a suction chamber of a duct type air conditioner according to one embodiment of the present invention, FIG. 2 is a configuration diagram showing an outline of the duct type air conditioner, and FIG. 3 is a conventional duct type air conditioner. It is a lineblock diagram showing the outline of a harmony machine. 7 ... suction chamber, 14 ... outside air intake duct, 17 ...
Electric damper, 18 ... Indoor pressure pipe, 19 ... Outdoor pressure pipe.

Claims (1)

(57) [Claims] 1. An outside air intake duct is connected to a room air suction chamber connected to a main body of an air conditioner, and an electric damper for adjusting an outside air intake amount is provided near the suction chamber. A duct type air conditioner comprising means for detecting an outside pressure and detecting a room negative pressure, and means for selecting and operating cooling, heating, outside air intake, or various operation operations using them in combination.