JPS6325438A - Air-conditioning and ventilating fan - Google Patents

Abstract

PURPOSE:To open and close a shutter electrically and permit the opening and closing of the shutter automatically without manual operation, by a method wherein a crank shaft fixed to an output shaft is rotated to move the shutter when a geared motor and a solenoid are conducted, and a switch is changed by a cam to stop the shutter at a time when an air discharging port and an air suction port are opened. CONSTITUTION:When the movable contact C of a ventilating fan switch 15 is connected to the fixed contact A of the same under a condition that a shutter 7 is closed, a solenoid 5 is energized to engage the gears of a geared motor 2; and at this time the geared motor 2 is energized since a microswitch 5 is operated by an operating lever 5a pushed by a cam 3. When a crank 4 is rotated in accordance with the rotation of the output shaft 2a of the geared motor 2, an engaging projection 4a moves the shutter 7 leftward while moving through groove 13. When the shutter 7 is moved to a position whereat both of an dir discharging port 12 and an air feeding port 11 are opened, the operation of the switch 5 is released by the cam 3, and the movement of the shutter 7 is stopped. In this case, the output shaft 2a is restrained by the solenoid 6.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention exchanges heat between the exhaust air discharged from the room to the outside during ventilation and the supply air flow supplied from the outdoors into the room using a heat exchanger. This relates to an air conditioning ventilation fan that reduces energy loss during operation.

Conventional technology Traditionally, shutters for air-conditioning ventilation fans that are mounted on a wall or the like and that simultaneously supply and exhaust air through pipes have a simple structure and high shutter effectiveness. A type shutter was often used.

The fourth air conditioning ventilation fan uses this sliding shutter.
As shown in the figure, 100 is an air conditioning ventilation fan body, and a sliding shutter 1o3 for opening and closing the air supply port 101 and the exhaust port 102 is provided on the back of the fan body, and this shutter 103 is manually slid in the direction of the arrow 106. As a result, the opening 104 provided in the shutter 103 matches the supply air 3''-par 101, and the shutter 103 matches the exhaust port 1.
02, both the air supply port 101 and the exhaust port 102 are open, and if it slides in the direction of the arrow 106,
The air supply port 101 and the exhaust port 102 are closed by the shutter 103. In addition, Fig. 4 shows the shutter 1o3.
107 is a partition plate that prevents mixing of the supply air flow and the exhaust air flow.

Problems to be Solved by the Invention The conventional manual sliding shutter 103 does not operate in conjunction with the operation switch of the air conditioning ventilation fan. It is not possible to exhaust or supply outdoor air into the room. However, even if the user forgets to open the shutter 103 and operates the air conditioning ventilation fan, the user may not notice.Also, even if the ventilation fan is automatically operated using a sensor, etc., the shutter 103 may not open or close automatically. There was a problem in that the user had to open and close the shutter 103 each time, and the original function of automatic operation could not be achieved.

The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to provide an air conditioning ventilation fan equipped with a switch that electrically opens and closes the shutter and allows the shutter to be opened and closed automatically without manual operation.

Means to Solve the Problem In order to solve this problem, the present invention includes a gear motor and a device that is fixed to the output shaft of the gear motor, and when the output shaft rotates to a predetermined position, the switch is turned off and the gear motor is turned off. a solenoid that engages a gear of the gear motor to transmit rotation to the output shaft and restrains rotation of the output shaft by engaging the gear when the gear motor is stopped; A switch equipped with a crank fixed in correspondence with the rotation of the fan is provided in the air conditioning ventilation fan body, and the crank is installed in a groove formed in a flat shutter that moves back and forth along a guide provided in the air conditioning ventilation fan body to open and close together. This air-conditioning ventilation fan is constructed by movably engaging an engaging part provided at the tip and by providing a spring attached to the child page plate shutter and always having tension in the direction of the closed state.

Effect With this configuration, when the gear motor is energized, the crank fixed to the output shaft rotates, the shutter engaged with this crank moves, and both the exhaust port and the intake port are open, and at this point The cam switches the switch to stop the shutter, but the solenoid remains energized, fixing the shutter in the open position. In order to move the shutter in the opposite direction and close it, the energization of the switch is stopped, so that the gear of the gear motor is released from the solenoid and the shutter is closed by the spring.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 3. In the figure, 1 is a switch provided on the back of the air conditioning ventilation fan main body 8, and a solenoid 6 that engages the gear of the gear motor 2 and transmits rotation to the output shaft 2a of the motor 2 through the gear 61. and a cam 3 having one notch fixed to the output shaft 2a.
, a crank 4 fixed to this cam 3, and the cam 3
The gear motor 2 is equipped with a microswitch 5 which switches and stops the gear motor 2 when the gear motor 2 rotates to a predetermined position. Furthermore, the solenoid 6 also has the function of engaging with the gear of the gear motor and restraining the rotation of the output shaft 2a when the gear motor 2 is stopped. Further, on the back side of the air conditioning ventilation fan main body 8, a four part 9 is formed one step lower inwardly, and in this recess 9, an air supply port 11 and an exhaust port 12 made of a flat plate and provided in the air conditioning ventilation fan main body 8 are opened and closed. A shutter 7 is provided.

The shutter 7 is provided with an opening 14 approximately in the center, a groove 13 formed in the vertical direction near the opening 14, and a spring 17 that always has tension in the direction of the closed state. An engaging protrusion 4a provided at the tip of the crank 4 is movably engaged in the groove 13, and the spring 14 is fixed to the air conditioning ventilation fan body 8. FIG. 3 shows the electric circuit of the air conditioning ventilation fan of this embodiment, and the movable contact C of the switch 15 is connected to one end of the power supply 16, and the fixed contact A is connected to switch between ON and OFF. It has become. Further, the fixed contact B connects the other end of the power source 16 to one drive terminal 2b of the gear motor and one drive terminal 6b of the solenoid 6. The normally open contact No. of the microswitch is connected to the other drive terminal 2c of the gear motor 2, and the common contact C is connected to the fixed contact A. Further, the other drive terminal 6a of the solenoid is connected to the fixed contact A, and the blower 1o built in the air conditioning ventilation fan main body 8 is connected to the ventilation fan switch 1.
5 fixed contacts A and B. The operation of the air conditioning ventilation fan in the above configuration will be described below. In FIG. 1, the shutter 7 is closed by blocking the air supply port 11 and the exhaust port 12. In this state, when the movable contact C of the ventilation fan switch 16 is connected to the fixed contact A, the blower 1° is energized and the solenoid 6 is also energized,
The gears of the gear motor 2 are engaged, and an energizing circuit is formed in the gear motor 2 via the normally open contact No. of the microswitch 6. At this time, the micro switch 5 is
Since the contact a is pressed by the circumferential portion of the cam 30 and operates, the normally open contact No. and the common contact C are electrically connected, and the gear motor 2 is energized. The output shaft 2a of the gear motor 2 is indicated by the arrow R.
direction, and the crank 4 also rotates. When the crank 4 rotates, the engaging protrusion 4a provided at the tip moves the shutter 7 to the left in FIG. 1 while moving within the groove 13 from above to below and also from below to above. When the shutter 7 moves to a position where both the exhaust port 12 and the air supply port 11, which had been opened until then, are opened by this movement, the notch of the cam 3, which was rotating together with the crank 4, is opened on the operating lever 5a. At this position, the operation of the microswitch 6 is released, the common contact C and the normally open contact No become non-conductive, the gear motor 2 is stopped, and the movement of the shutter 7 is stopped. At this time, the gear of the gear motor 2 remains engaged by the solenoid 6, and the output yoke 12a is restrained, so the crank 4 is fixed and the shutter 7 is closed to the exhaust port 1.
2 and the air supply port 11 are fixed in the open position. On the other hand, by turning off the operation switch 15 in the open state of the supply air outlet 11 and the exhaust port 12 in FIG. 2 is disengaged, and the shutter 7 is pulled by the spring 17 fixed between it and the air conditioning ventilation fan body 8 to a position where the air supply port 11 and the exhaust port 12 are completely blocked and closed. Moving. At this time, the operating lever 6a is pushed by the cam 3 to operate the microswitch 6 to connect the normally open contact No. and the common contact C, and the shutter 7 is placed in a state in which the next ventilation switch 15 is opened.

As described above, according to this embodiment, the shaft 7 is connected to the air supply port 11 and the exhaust port 1 of the air conditioning ventilation fan main body 8 by the switch 1.
2 can be electrically opened and closed at the same time as operation, so there is no need to forget to close shutter 7 and stop the operation, or forget to open shutter 7 and start operation, so normal ventilation can be maintained at all times, and air conditioning Even if a ventilation fan, sensors, etc. are installed and automatic operation is performed, the shutter 7 does not have to be opened and closed manually each time.

The vehicle will be able to fully command its functions as an autonomous vehicle.

Effects of the Invention As is clear from the above description of the embodiments, the present invention enables electrical opening and closing of a flat plate shutter, which was conventionally opened and closed by hand by sliding it, and a sensor etc. in an air conditioning ventilation fan. Even if the shutter is set up and operated automatically, there is no need to open and close the shutter each time, and it can be opened and closed automatically, so you will not forget to close or open the shutter, and you will always have normal ventilation. This has the effect of being able to.

[Brief explanation of the drawing]

FIG. 1 is a rear view showing the shutter of an air conditioning ventilation fan according to an embodiment of the present invention in a closed state, FIG. 2 is a rear view showing the same shutter in an open state, and FIG. 3 is an electric circuit of the air conditioning ventilation fan. FIG. 4 is a rear view showing a state in which the shutter of a conventional air conditioning ventilation fan is closed. 1... Switch, 2... Gear motor, 2a...
Old...output shaft, 3...cam, 4...crank, 4a...related page 11 mating protrusion, 5...micro switch, 6...・
...Solenoid, 7...Shutter, 8...
...Air conditioning ventilation fan body, 9...Recess, 11...
...Air supply port, 12...Exhaust port, 13...
...Groove, 14...Opening, 17...Spring.

Claims (1)

[Claims] Fixed to the gear motor and the output shaft of this gear motor,
A cam that turns off a switch to stop the gear motor when the output shaft rotates to a predetermined position, and a cam that engages a gear of the gear motor to transmit rotation to the output shaft and engages the gear when the gear motor stops. A switch equipped with a solenoid that restrains the rotation of the output shaft depending on the rotation of the output shaft, and a crank fixed to the output shaft in correspondence with the rotation of the cam is provided in the air conditioning ventilation fan body, and an air supply port provided in the air conditioning ventilation fan body. and the exhaust port are moved back and forth along a guide provided in the air conditioning ventilation fan body, and an engaging portion provided at the tip of the crank is movably engaged with a groove formed in a flat plate shutter that opens and closes together. An air conditioning ventilation fan equipped with a spring that is attached to a flat shutter and always has tension in the closed state direction.