JPS5950900B2 - Air conditioner blow control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioner equipped with a blowing direction control device that changes the blowing direction continuously or intermittently. One of the purposes is to improve the effectiveness and improve comfort.

Conventionally, this type of air conditioner only uses a motor or the like to continuously vary the direction of air blowing, and for example, the direction of air blowing is continuously varied even when sleeping during cooling, which can cause the indoor ambient temperature to become abnormal. This can cause a decrease in blood pressure and may even make it difficult to sleep.

In addition, in order to solve this problem, it is possible to operate a control switch or the like to stop the air blowing direction in a certain direction when sleeping, but this would adversely affect the temperature distribution in the room and reduce comfort. There is no point in performing variable control of the intended air blowing direction.

In view of the above-mentioned conventional problems, the present invention improves the cooling effect especially during special operations such as when sleeping, so as not to impair comfort.

Hereinafter, the present invention will be described with reference to the accompanying drawings showing one embodiment thereof.

In FIG. 1, reference numeral 1 denotes an indoor unit that constitutes an air conditioner together with an outdoor unit (not shown), as is well known, and is provided with an inlet 2 and an outlet 3 on the front surface, and inside the Along with the compressor, outdoor heat exchanger, etc. (both not shown) installed in the unit, an indoor heat exchanger, a blower device, etc. (both not shown) that constitute a well-known refrigeration cycle are installed. ing.

Here, the air outlet 3 is provided with a fluid element each having an upper wall 4 and a lower wall 5 that extend in the front direction, and a wind direction changing blade 6 that rotates back and forth within a predetermined angle range.

Here, the principle of changing the wind direction using this fluid element is well known and is not the subject matter of the present invention, so its explanation will be omitted.

Reference numeral 7 denotes a wind direction display section that displays the current angle of the wind direction changing direction by the fluid element, and is linked to the operation of the wind direction changing blade 6.

Reference numeral 8 denotes a control unit for controlling the operation of the air conditioner, which includes a normal operation switch (hereinafter simply referred to as an operation switch) 9, which will be described later.
It is equipped with a special operation switch (hereinafter referred to as a sleep switch) 10, which corresponds to the timer operation switch of the present invention, a ventilation changeover switch 11, and the like.

Next, the electric circuit of this embodiment will be explained with reference to FIG.

In the same figure, 9 is an operation switch, 10 is a sleep switch, and 11 is a ventilation changeover switch.
It is equipped with a configuration that can be operated automatically by
If necessary, the manual switch may be installed in a circuit with a separate switch).

Reference numeral 13 denotes an indoor fan motor constituting the blower of the present invention, which has a high speed terminal (hereinafter simply referred to as Hi) and a low speed terminal (hereinafter simply referred to as Low), which are switched by the changeover switch 11.
) and has a speed change function.

14 is a motor that reciprocates the wind direction changing blade 6 shown in FIG. 1 within a predetermined angle range.

This motor 14 is connected to a power source via a normally closed switch contact 15a.

Further, the means for reciprocating rotation is, for example,
Since this is possible by using a well-known mechanism as shown in Japanese Patent No. 251, the explanation will be omitted.

16 is an operation indicator lamp, 17 is a compressor motor, and 18 is an outdoor fan motor. This compressor motor 17 and outdoor fan motor 18 are each connected in parallel, and a thermostat (19) that detects the indoor temperature is connected in series with this parallel circuit. .20 is provided.

The thermostat 20 has a function of switching the operating temperature contact point into three stages, and operates in conjunction with the thermostat 19 when the sleep switch 10 is turned on.

21 is a timer that is activated when the sleep switch 10 is turned on, and the switch contact 15a is activated after a predetermined period of time has elapsed.
Turn OFF.

Here, like the timer 21, the relay coil 12 is activated by turning on the sleep switch 10, and always switches the ventilation changeover switch 11 from Hi to Low.

In other words, the air blowing capacity of the indoor fan motor 13 is reduced.

In the above configuration, when the operation switch 9 is turned on, the operation indicator lamp 16 lights up, the motor 14, the compressor 17, and the outdoor fan motor 18 are operated, and the cooling of the room is started by a well-known refrigeration cycle.

At the same time, the indoor fan motor 13 is also operated and rotates in either Hi or Low, which is manually operated.

In addition, since the air direction changing blade 6 is reciprocated in the vertical direction by the motor 14, the air blowing direction also changes continuously or intermittently in the vertical direction.

The above case is a normal cooling operation state.

Next, when performing sleep driving, first turn on the sleep switch 10.

As a result, the relay coil 12 and the timer 21 operate simultaneously, and the changeover switch 11 is first switched from Hi to Low, and the thermostat 19 is switched to the thermostat 20 side.

When a predetermined time t1 has elapsed, the timer 21 is turned off as shown in FIG. 3, and the switch contact 15a opens to stop the motor 14.

Here, if necessary, a well-known configuration may be provided in which when the motor 14 is stopped, the air blowing direction returns to the horizontal direction.

When a predetermined time t2 has further elapsed, the operating point of the thermostat 20 is switched from T1 to T2, and the room temperature is controlled based on this set value T2.

Temperature control is the same as the conventional one, so its explanation will be omitted.

When the predetermined time t3 has further elapsed, the operating point of the thermostat 20 is further switched from T2 to T3, and the room temperature is controlled based on this set value T3.

Therefore, during sleep operation when it is necessary to pay particular attention to the cooling effect, the air blowing capacity is reduced and the change in air blowing direction is stopped after a predetermined time tz (approximately 15 minutes) has elapsed.
In particular, changing the direction of air flow for a predetermined period of time t1 improves the temperature distribution in the room until you fall asleep without being too cold, and at the same time, changing the direction of air flow for a predetermined period of time t2゜t3 As the time elapses, the set temperature in the room increases (for example, increases by 1 degree Celsius after 30 minutes, and increases by 2 degrees Celsius after 1 hour), so the negative effects of being too cold can be prevented.

Note that similar effects can be expected even if the air blowing direction control device is equipped with a microcomputer 22 as shown in FIG.

That is, as is well known, the microcomputer 22 is equipped with a time control function, an operation control function of various devices in accordance with detected temperature changes, etc., and therefore, by storing a program for controlling as described above, the same function can be performed. can be controlled.

Since building this program is not the gist of the present invention, a description thereof will be omitted.

Here, the same numbers as those in the above embodiment are given the same numbers, and the description thereof will be omitted.

23 in the figure is a relay coil that replaces the timer 21 in Figure 2;
23a is its contact, and 24 is a thermistor for detecting room temperature.

To explain the outline of its operation, the microcomputer 2
Each relay coil 23
, 12 are activated, and the contact 23a and switch 11 are activated.

Of course, the operating point of the set temperature also changes after a predetermined period of time due to its own time limit function.

Although the compressor motor and the like are not shown in the figure, they can be operated by a signal from the microcomputer 22 using a relay or the like as described above, and their explanation will be omitted.

In addition, in each of the embodiments, the speed of the fan motor was set to two types, Hi and Low, but three or more types may be used.In short, it is sufficient to set the speed to the lowest speed when sleeping, or to a speed that does not make the fan too cold. be.

As described above, according to the present invention, the cooling operation in which the operating time is controlled by a timer, such as when going to bed, controls the air blowing direction only for the first predetermined time, and then stops changing the air blowing direction and changes the air blowing direction. Since the temperature is constant (for example, in the horizontal direction), the indoor air is not stirred more than necessary, and excessive cooling can be prevented.

In addition, since the air blowing ability during sleeping is also reduced at that time, there are various advantages such as no harmful effects caused by being too cold.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an air conditioner equipped with an air blow control device according to an embodiment of the present invention, Fig. 2 is a schematic electrical circuit diagram of the air conditioner, and Fig. 3 shows the operating state of the control device. FIG. 4 is a schematic control circuit diagram showing another embodiment of the present invention. 1... Indoor unit (air conditioner body), 2
...Suction port, 3...Blowout port, 6...
... Wind direction changing blade, 9 ... Operation switch, 1
0...Sleep switch, 11...Blower selector switch, 13...Indoor fan motor (air blower).

Claims (1)

[Claims] 1 constitutes an air conditioner that is equipped with an inlet and an outlet on the front, a heat exchanger and a speed-adjustable blower device inside, and a wind direction changing blade that changes the direction of air blowing from the outlet. is rotatably provided, and is further provided with a blower control device that rotates the wind direction changing blade back and forth within a predetermined angle range, and this air blower control device is connected to a motor that drives the wind direction changing blade and a motor that controls the rotation of the motor in the wind direction. a replacement means for replacing the reciprocating rotational movement of the changing blade; a timer having an opening/closing contact connected in series with the motor and opening/closing the opening/closing contact after a certain period of time; and starting energization of the timer. A blow control device for an air conditioner comprising a timer operation switch and a blow changeover switch that switches between a high speed terminal and a low speed terminal of the blower in conjunction with turning on the timer operation switch.