JPS5846338Y2 - Air blowing device for heating and cooling - Google Patents

Description

[Detailed explanation of the idea] Cooling or heating is performed to maintain the room temperature at a specific temperature. This method uses the so-called constant air volume CAV method, which maintains the air volume constant and changes the air temperature, and the So-called variable air volume VA that adjusts the air volume
There is an air conditioning method called the V method.

The latter is a large building that provides air conditioning throughout the year.
It is said to be suitable for small rooms or places where lighting generates a lot of heat, and because it is easy to control the temperature inside the room, it has become increasingly popular in recent years.

However, when trying to maintain a constant indoor temperature using the latter variable air volume method, if the air volume is adjusted according to changes in the heat load, the air with the adjusted air volume will be blown into the room from the same outlet. Compared to when the air volume is high,
When the air volume is low, the distance the blown air reaches is shortened,
The diffusion range of the blown air becomes smaller, making it difficult to air-condition the entire room uniformly, and there is a risk that the temperature distribution in the room will be uneven.

In view of the above, the present invention has been developed in a variable air volume type air blowing device by taking into account the Coanda effect, the indoor air and the attraction effect, and even if the air to be blown into the room from the duct is throttled by the damper, the reaching distance and the blowing air The embodiment of the present invention will be described below with reference to the drawings.For example, if one of the inner walls of the main body 1, which has a cylindrical shape such as a rectangular tube, is The inner wall 2 has no irregularities between the air intake port 3 and the air outlet 4.
The air intake port 3 on the duct side of the main body 1 is provided close to the inner wall 2 which does not have the above-mentioned uneven portion, and inside the main body 1, there is an uneven portion near the air intake port 3. A damper 5 is provided on the side away from the inner wall 2 that does not have any unevenness, that is, at the lower part, and indoor air is supplied to the part of the damper 5 on the side opposite to the inner wall 2 that does not have the above-mentioned unevenness, that is, the lower part, on the side of the discharge port 4. An air circulation hole 6 is provided to attract the air, and the air circulation hole 6 faces the inner wall 2 having no unevenness on the side of the outlet 4, and approaches the inner wall 2 having no unevenness as it reaches the outlet 4. The present invention is implemented by configuring a cooling air blowing device provided with a guide 7 having an inclined or curved inner wall surface.

Reference numeral 8 in the figure denotes a damper body which houses, for example, a bellows therein, and operates the damper 5 by injecting and discharging air into the bellows according to the difference between the room temperature and the set temperature.

Reference numeral 9 denotes a guide extension part 10 which is connected to the guide 7 provided on the lower surface of the main body 1 and is approximately parallel to the inner wall 2 having no uneven parts;
is a temperature-sensing element such as a thermistor that generates a signal to operate the damper 5. Indoor air is drawn into the main body 1 through the air circulation hole 6, and by passing through the temperature-sensing element 10, the damper 5 is activated.
However, the temperature sensing element 10 may not be provided within the main body 1, but may be separated from the main body 1 and provided indoors.

11 is a heat insulating material that surrounds the entire circumference of the main body 1, and 12 is a guide tube provided at the 4 parts of the discharge port, which changes the direction of air blowing at the 4 parts of the discharge port. This guide cylinder 12 may be removed.

13 is a mounting shaft of the guide cylinder 12, 14 is a duct connected to the air intake port 3, 15 is a ceiling, and 16 is a wall surface.

In addition, when implementing the present invention, the main body 1 is not limited to a rectangular tube, but may be polygonal or cylindrical, and studs may be used to construct the main body 1 on the inner wall 2 having no uneven parts. Even if the heads of screws or screws protrude, this does not affect the effects of the present invention, which will be described later, and is therefore included within the scope of the present invention.

The air outlet device constructed according to the present invention is as described above.
Since the air intake port 3 connected to the duct 14 is provided close to the inner wall 2 of the cylindrical main body 1 which has no uneven parts, air is blown from the duct 14 side into the main body 1 from the air intake port 3. When air is blown into the main body 1, it becomes attached to the inner wall 2 of the main body 1 which has no irregularities due to the Coanda effect, and moves along the inner wall 2.

The primary air, which is an airflow that moves inside the main body 1 along the inner wall 2 having no uneven parts, is drawn into the main body 1 through the air circulation hole 6 provided between the damper and the guide. This reduces the vertical descent of the blown air especially during cooling, and when the wind speed of the primary air is high, the air flows into the main body 1 from the air circulation hole 6. The amount of air attracted is reduced,
When the wind speed of the primary air is low, the amount of attraction increases, so even if the amount of air blown out from the outlet 4 is throttled by the damper, a large reduction in the reach distance and diffusion range can be prevented.

In addition, in the present invention, the portion of the air circulation hole 6 facing the inner wall 2, which does not have an uneven portion, is in the shape of a recess between the damper 5 and the guide 7 in the main body 1, and the primary air here has the above-mentioned Coanda effect. By moving along the inner wall 2 having no irregularities, the effect of attracting indoor air through the air circulation holes 6 becomes better.

[Brief explanation of drawings]

The drawings show an embodiment, and FIG. 1 is a side sectional view of an air blowing device constructed according to the present invention, and FIG. 2 is a front view. DESCRIPTION OF SYMBOLS 1... Main body, 2... Inner wall without uneven parts, 3... Air intake port, 4... Discharge port, 5... ... Damper, 6 ... Air circulation hole, 7 ... Guide, 8 ... Damper body, 9 ... Guide extension, 10 ... ...Temperature sensing element, 11...Insulating material, 12...Guide tube, 13...Mounting shaft, 14...Duct, 15... ...Ceiling, 16...Wall surface.

Claims (1)

[Scope of utility model registration request] A part of the inner wall of the cylindrical main body is provided with an uneven part between the air intake port and the air outlet, and there is no structure that forms the uneven part, and the air intake port on the duct side of this main body is The main body is provided close to the inner wall having no unevenness, and a damper is provided in the main body toward the air intake port and away from the inner wall having no unevenness. On the outlet side, an air circulation hole for attracting indoor air is provided on the opposite side of the wall surface that does not have the above-mentioned unevenness, and from this air circulation hole to the outlet side, it faces the wall surface that does not have the unevenness. An air blowing device for air conditioning and heating comprising a guide having an inner wall surface that approaches a wall surface without unevenness as it reaches an outlet.