JPS6221875Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a simultaneous supply and exhaust type ventilation fan.
The object of the present invention is to provide a structure in which the direction of supply air blowing into a room can be changed and the amount of supplied air can be varied steplessly.

Conventionally, this type of ventilation fan is driven by attaching an exhaust fan 102 and an air supply fan 103 to both ends of a single electric motor 101, as shown in FIGS. 1 and 2. Therefore, if the rotation of the air supply fan 103 is reduced in order to reduce the amount of air supplied, the rotation of the air supply fan 103 is reduced because the electric motor 101 is shared.
The rotation of the engine also decreases, and the exhaust air volume also decreases. Therefore, it is not possible to control the supply air volume and the exhaust air volume separately, and when heating and cooling, there is a loss of thermal energy due to the sudden inflow of outside air with a large temperature difference, and when the ventilation fan is stopped. However, when the outside wind is strong, there are negative effects such as discomfort due to unintended changes in the indoor environment due to the inflow of outside air with inappropriate temperature and humidity from the air supply flow path.To solve these problems, indoor openings on the air supply side are A door-like opening adjusting plate fixed with a hinge is installed on the engine to adjust the air supply amount without changing the exhaust volume, and to prevent outside air from entering when the operation is stopped. Due to the structure of the aperture adjustment plate, the air supply with a certain flow velocity enters only in one direction.For example, in winter, if there are people in the direction of entry, this creates an uncomfortable draft.
There were also restrictions on the indoor layout.

This invention solves the above conventional problems,
The embodiment will be described below based on FIGS. 3 and 4.

In the figure, 1 indicates an exhaust passage 2 and an air supply passage 3.
An exhaust fan 4 is disposed in the exhaust passage 2, and an air supply fan 5 is disposed in the air supply passage 3, and these fans are driven by an electric motor 6. The main body 1 has a plate 7 separating the indoor suction port 8 of the exhaust passage 2 and the indoor discharge port 9 of the air supply passage 3.
It is divided by The indoor air intake port 8 and the indoor air outlet 9 are covered with a louver 11 and partitioned by a partition plate 10 that contacts the separation plate. A shutter 12 for opening and closing the air supply passage 3 is held by a guide 13 and an L-shaped portion 14 at the tip of the separation plate 7 at the discharge port portion of the air supply passage 3 near the main body 1, and is slidably attached to open on both sides. .

15 is an outdoor discharge port of the exhaust passage 2, and 16 is an outdoor suction port of the air supply passage 3. 17 is the ceiling board, 1
8 is a wooden frame to which the main body 1 is fixed.

In the above configuration, when the electric motor 6 rotates the exhaust fan 4 and the air supply fan 5, the air sucked from the indoor suction port 8 of the exhaust passage 2 is moved from A→
The outside air is guided as shown by A' and discharged to the outside from the outdoor side discharge port 15 of the exhaust passage 2, and the outside air sucked in from the outdoor side suction port 16 of the air supply passage 3 is guided as shown in B→B' and is then discharged to the outside from the outdoor side discharge port 15 of the exhaust passage 2. It is discharged into the room from the indoor side discharge port 9 of No. 3. In this case, since a shutter 12 is slidably provided at the outlet of the air supply passage 3 from the main body 1, the rotational speed of the air supply fan 5 can be adjusted by adjusting the degree of opening of the shutter 12. The supply air volume can be adjusted steplessly without changing the air flow. Therefore, in this case, the rotational speed of the electric motor 6, that is, the rotational speed of the exhaust fan 4, does not change, so the supply air flow rate can be controlled steplessly without changing the exhaust air flow rate. In particular, since the shutters 12 are double-opening, the opening position can be freely changed by changing the positions of the two shutters 12, and therefore the direction of discharge of outside air into the room can be freely selected.

As described above, according to the present invention, since the direction of discharge of outside air into the room can be selected, the direction of inflow and discharge of outside air can be adjusted according to the position of the person in the room.
This prevents outside air from directly hitting the occupants of the room, and allows for comfortable ventilation without causing discomfort even when there is a large temperature/humidity difference between indoors and outdoors.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a conventional simultaneous supply/exhaust type ventilation fan, FIG. 2 is a sectional view thereof, and FIG. 3 is a partially cutaway perspective view of a simultaneous supply/exhaust type ventilation fan according to an embodiment of the present invention. FIG. 4 is a sectional view of the same. 1... Body, 2... Exhaust passage, 3... Air supply passage, 4... Exhaust fan, 5... Air supply fan,
6...Electric motor, 12...Shutter.

Claims (1)

[Scope of utility model registration request] A main body provided with an air supply passage and an exhaust passage, an air supply fan for ventilating the air supply passage, an exhaust fan for ventilating the exhaust passage, and a common fan for driving both of these fans. It has an electric motor,
A simultaneous air supply/exhaust type ventilation fan equipped with a sliding shutter that opens and closes the indoor discharge port of the air supply passage.