JPH0142739Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a so-called energy-saving type of fan coil unit for air conditioning and heating equipment whose main purpose is to prevent the spontaneous heat generation of the coil when the fan is stopped and to save a large amount of energy. The aim is to provide a fan coil unit.

Normally, when an air conditioner is used, the air naturally convects inside the machine and the coil radiates heat naturally even if the blower is stopped, making it extremely uneconomical.

Particularly in the case of floor-standing fan coil units, which have recently been widely used, since the ventilation passages are substantially vertical, the amount of unnecessary energy heat radiation is extremely large.

The present invention focuses on such drawbacks, and attempts to fundamentally prevent the natural heat dissipation of the energy by automatically shutting off the ventilation passage at the same time as the blower stops. In a fan coil unit in which each coil element 3 is installed, a damper 6 is placed in the air passage 4 above the coil in conjunction with the rotary switch 9 of the blower 2, so that the air passage 4 is closed when the blower is stopped, and opened at the same time as it is started. The present invention relates to a natural convection prevention device in a fan coil unit, which is characterized in that it is provided so as to be openable and closable.

Hereinafter, a specific example of the present invention will be explained in detail with reference to the drawings. 1 is a machine casing, 3 is a blower, 3 is a coil element, and 4 is a ventilation passage that communicates with an air outlet 5 opened above the machine casing 1. .

A damper 6 of a size that blocks the ventilation passage 4 is supported in the ventilation passage 4 by support shafts 7, 7 so as to be openable and closable, and several gears 8 are mounted on the support shaft 7.
... is provided and interlocked with the rotary switch 9,
The air blower 2 is started by the on/off switching operation of the rotary switch 9, the damper 6 opens at the same time as the air blowing starts, and the damper 6 closes the lid at the same time as the air blowing stops, thereby closing the air blowing passage 4. This is what happens.

That is, by rotating the rotary switch 9 in the direction of the right arrow L and inputting an input, the damper 6 is opened.
Air from the blower 2 flows through the air passage 4 and is discharged from the air outlet 5 at an appropriate temperature.

Note that the symbols L = weak wind, M = medium wind, and H = strong wind are shown.

As described above, the natural convection prevention device in the fan coil unit according to the present invention automatically closes the damper 6 when the rotary switch 9 of the blower 2 stops blowing air, opens the damper 6 when the blowing starts, and automatically closes the blower passage 4. Since the coil element 3 is configured to open and close automatically, when the air blowing is stopped, no airflow flows through the air passage 4, and therefore the coil element 3
It has remarkable effects, such as completely reliably preventing the spontaneous heat generation of the air, and greatly reducing unnecessary energy use.

Incidentally, the "natural heat dissipation amount when the fan coil is stopped (chilled water, air conditioning)" is based on the aircraft's capacity: Conventional (without damper) 17% Invention (with damper) 3% In view of the above experimental data, this invention is This can be said to be the best idea as an energy-saving type.

In addition, as mentioned above, the present invention has a simple structure and can be easily installed on conventional machines, and by interlocking the damper 6 and the rotary switch 9, opening and closing of the damper 6 and braking of the blower 2 can be performed with one touch. It is done;
Furthermore, it also has the advantage of being able to prevent dust from entering the interior of the machine via the damper 6 when the coil is not in use.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of a fan coil unit having a natural convection prevention device according to the present invention, in which Fig. 1 is a front view clearly showing the internal mechanism, Fig. 2 is a longitudinal sectional side view of the same, and Fig. 3 is an interlocking mechanism. FIG. 4 is a plan view of the rotary switch operation panel. Explanation of symbols, 1...Machine casing, 2...Blower, 9...
...Coil element, 4...Blow passage, 7...Spindle, 8...Gear, 9...Rotary switch.

Claims (1)

[Scope of utility model registration request] In a fan coil unit in which a blower 2 and a coil element 3 are installed inside a machine casing 1, a damper 6 is mounted on support shafts 7, 7 in a blow passage 4 above the coil.
The damper 6 is supported so as to be openable and closable via the
is interlocked and connected to the rotary switch 9 of the blower 2, so that the blower passage 4 is closed when the blower is stopped, and opened when the blower is started, so that the blower passage 4 is automatically opened and closed according to the ON/OFF operation of the rotary switch 9. A natural convection prevention device in a fan coil unit, characterized in that it is configured as follows.