JPS62131147A - Deflection of airflow direction of air-conditioning machine - Google Patents

Abstract

PURPOSE:To improve the comfortableness of a living space upon starting cooling operation by a method wherein a fan is driven at high speed and ventilating direction is distributed downwardly before the temperature of ventilating air arrives at a predetermined value but the ventilating direction is distributed downwardly when the temperature of ventilating air has arrived at the predetermined value while the fan is driven in a low speed and the ventilating direction is changed so as to be distributed upwardly when the temperature of ventilating air has arrived at a second predetermined value. CONSTITUTION:When a blow-off air temperature is higher than a first set temperature, a central motor 3 and a left motor 9a are turned left, a right motor 9b is turned right and is stopped while a ventilating motor 16b is driven at high speed to concentrate the blow-off air downwardly with a large airflow amount. When the blow-off air temperature detected by a thermistor 21 is lower than the first set temperature and higher than a second set temperature, the central motor 3 and the right motor 9a are turned left, the left motor 9a is turned right and is stopped to distribute the blow-off air downwardly. When the blow-off air temperature detected by the thermistor 21 is lower than the second set temperature, the central motor 3 and the left motor 9a are turned right, the right motor 9b is turned left and is stopped while the ventilating motor 16b is driven at low speed to distribute the blow-off air horizontally with a small airflow amount.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wind direction deflection method for controlling the blowing direction of an air conditioner.

BACKGROUND OF THE INVENTION Until now, various devices have been devised as wind deflection devices for air conditioners in order to improve the comfort of living spaces.

For example, there is a device that swings the upper and lower deflection blades at a constant period. (Japanese Patent Publication No. 56-21149) Problems to be Solved by the Invention However, with the above-mentioned conventional configuration, only vertical deflection control is possible, and left and right changes are manual, so only a limited space can be cooled. There wasn't. There is also the problem of poor temperature distribution in the room. Furthermore, since air swing occurs from the start of operation, there is a problem in that the cold air does not hit the human body when the air conditioner cools down, making it impossible to obtain a sufficient cooling effect.

An object of the present invention is to improve the comfort of a living space using an air conditioner, particularly to improve the comfort at the start of cooling operation.

Means for Solving the Problems In order to solve the above problems, the present invention compresses a refrigerant,
an indoor unit that includes a compressor that constitutes a refrigeration cycle together with an indoor heat exchanger and an outdoor heat exchanger, a variable rotation speed blower, and the indoor heat exchanger; and an indoor heat exchanger that is provided in the indoor unit. an air outlet that blows out the air that has passed through the air outlet; a vertical deflection blade that deflects the air that is blown out from the air outlet in the vertical direction; Left and right deflection blades branching and deflecting in the left and right directions, drive means for independently driving the upper and lower deflection blades and left and right deflection blades to deflect them independently, temperature detection means for detecting the blowout temperature or room temperature, and rotation of the blower. In a state where the air blown out from the blower outlet is concentrated in the center and the blower is set to a high rotation speed and a large air volume, the temperature of the blown air is 1
When the temperature of the blown air reaches a second predetermined value, the left and right deflection vanes are driven so as to diverge in the blowing direction, and the rotational speed of the blower is maintained, and further, the temperature of the blown air reaches a second predetermined value. 10. The above-mentioned means drives the vertical deflection blades so that the blowing direction is upward, and changes the rotational speed of the blower so that the air volume changes from large to small. The air deflection device of the air conditioner of the invention concentrates the airflow downward when the air temperature is high, such as at the start of cooling operation, so that the cold air directly hits the human body, providing a tangible cooling effect. In addition, if the temperature of the air outlet drops to a certain extent and the cold air is applied directly to the human body, it will cause discomfort, and if the temperature is low enough for the living space, if the air is diverted downward, the cooling will wrap around the lower part of the room near the living space. This improves the experience and shortens the fall time. In addition, if the blowout temperature drops below the above range, even if the airflow is directed downward, the cold air will hit the human body, making it uncomfortable. Since it is small, the temperature of the entire room can be lowered uniformly without direct cold air being applied to the human body, improving the sensation and achieving a sufficient cooling effect.

Embodiment Hereinafter, a wind direction deflection device for an air conditioner according to an embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is an exploded perspective view of the main parts of the device.

As shown in the figure, it is slightly curved in the direction of the balloon,
A vertical deflection blade 1 that performs vertical wind direction deflection by the Coanda effect has a shaft 2 in its longitudinal direction, and this shaft 2 is connected to an intermediate motor (stepping motor) 3. The left and right deflection vanes that horizontally deflect the blown air by the Coanda effect are composed of a left deflection vane 5& connected to a coupler 4a and a right deflection vane 5b connected to a coupler 4b. And the left deflection blade 5a is
Feather lever arm 6a, rod 7a.

It is connected to a left motor (stepping motor) 9a via a motor lever arm 8a, and the right deflection blade 5b is connected to a blade lever arm 6b and a rod 7b.

It is connected to a right motor (stepping motor) 9b via a motor lever arm 8b. Here, left deflection blade 5
a is slightly curved so that its center is to the left of this left deflection blade 5a, and right deflection blade 5b is slightly curved so that its center is to the right of this right deflection blade 5b. That is, both sides 13a of the air outlet 12, which will be described later,
13b to cause the aforementioned Coanda phenomenon and deflect the wind direction. Since the Coanda effect is a well-known technique, its explanation will be omitted.

In this embodiment, the middle motor 3 and the left motor 9a.

Although the right motor 9b constitutes the driving means, it is also possible to use a single motor for driving the left and right deflection blades, and furthermore, by using a switching means such as a gear or a flange, it is possible to drive the upper and lower deflection blades 1 and the left and right deflection blades. It is also possible to control the motor with a single motor.

Further, the motor is not limited to a stepping motor, but may be an induction motor or the like.

It is also possible to use a shape memory alloy spring that changes depending on the ambient temperature instead of the motor, and in this case, the alloy itself has the temperature detection means and set temperature storage means, which are essential requirements of the present invention. Become. In addition, the reason why the left and right deflection blades are divided into two parts, the left deflection blade 5a and the right deflection blade 5b, is to facilitate the concentration and separation operations that are the object of the present invention, and also to be able to independently control the wind direction. In order to perform more delicate control of the wind direction, the structure may be further divided into smaller sections, or conversely, the structure may be connected by a single coupling device 4 as shown in FIG. 2 without being divided.

The reason why the macho deflection blade 5a and the right deflection blade 5b are curved is to not only deflect the wind direction by the Coanda effect I but also to enhance the concentration and splitting effect that is the object of the present invention. As long as the effect is not taken into account, it may be a planar shape that is not curved, or it may even be a shape in which the opening directions are reversed.

Next, FIG. 3 shows a perspective view of the indoor unit 10 equipped with the wind direction deflection device shown in the first factor.

In the figure, an indoor unit 10 has a suction port 11 on the front surface for sucking indoor air, and below the suction port 11 are vertical deflection blades 1 and left and right deflection blades 5a.

An air outlet 12 having a diameter 5b is provided. Both side portions 13a and 13b of the air outlet 12 are respectively curved surfaces that gradually expand outward in order to deflect the wind direction by the Coanda effect as described above. Further, as described above, the lower surface portion 14 is also a curved surface that gradually expands in order to deflect the wind direction by the Coanda effect.

The side cross section 1 of this indoor unit 10 is shown as the fourth factor. An indoor heat exchanger 15 is provided at a position facing the suction port 11 , and a blower 16 a is provided in the ventilation path from the indoor heat exchanger 15 to the outlet 12 .

16b is a blower motor (transistor motor) that rotates the blower.

Next, the refrigeration cycle of this embodiment is shown in FIG.

In the figure, a compressor 17, a four-way valve 18, an indoor heat exchanger 15, a capillary tube 19, and an outdoor heat exchanger 20 are connected in a ring. Here, during heating operation, the refrigerant is
The air flows in the order of compressor 17, four-way valve 18, indoor heat exchanger 15, capillary tube 19, and outdoor heat exchanger 20, and during cooling operation, compressor 17, four-way valve 18, and outdoor heat exchanger 20.
, the capillary tube 19 and the indoor heat exchanger 15 in this order.

Here, 21a to 21d are temperature detection means that indirectly detect the temperature of the air outlet. That is, 21a is a temperature sensor that detects the pipe temperature of the indoor heat exchanger 20, 21b is a current detector that detects the current of the compressor 17, and 21c is the compressor 17.
21d is a pressure detector that detects the pressure of the pipes of the indoor heat exchanger 15.

To detect the temperature of the air outlet, is it possible to install a temperature sensor directly at the air outlet 12?
It can also be detected from pressure and current, and either one can be selected or used in combination.

Further, 21e is a temperature detector that detects the suction temperature, which is an example of a temperature detection means for detecting room temperature, and the room temperature detection location is not limited to the vicinity of the suction port.

Next, the circuit diagram of the main part of this embodiment is shown in No. 6. Inside the microcomputer 22, there is a storage section 23 that stores a preset temperature, and a set value and an input value stored in this storage section 23. It has a drive signal generating means 24 which generates an appropriate output signal based on a comparison of the above, and a rotation speed variable means 25 which converts the signal generated by the drive signal generating means 24 into the rotation speed of the blower motor 16b. Temperature is detected via a comparator 26 on the input side of this microcomputer.

Here, 28 is a bias resistor, and 29 is a scan resistor.

Now, to explain the relationship between the block diagram shown in FIG. 11 and the circuit shown in FIG. 6, the thermistor 21 in FIG.
The storage section 23 in FIG. 6 corresponds to the temperature detection means in FIG. 1, the storage section 23 in FIG. 6 corresponds to the set temperature storage means in FIG. 11, and the drive signal generation means 24 in FIG. 6 corresponds to the drive signal generation means in FIG. death,
The rotation speed variable means 25 in FIG. 6 corresponds to the rotation speed variable means in FIG. 11, and corresponds to the drive means for each motor 3, 9a, 9 in FIG. 6* in FIG. 11.

Next, the operation of this embodiment is shown in FIG. This figure is a flowchart during cooling operation.

The blowout temperature t is the temperature detected by the thermistor 21, and tl·t2 is the set temperature. When this blowing temperature t is higher than the first set temperature t, the middle motor 3 is rotated to the left, the left motor 9 & is rotated to the left, the right motor 9b is rotated to the right and stopped, and the rotation speed of the blower motor 16b is increased. Rotate. Here, rotating the middle motor 3 to the left moves the upper and lower deflection blades 1 to the lower position, rotating the left motor 9a to the left moves the left deflection blade 5a to the right, and rotating the right motor 9b to the right moves the left deflection blade 5b to the lower position. indicates that it is driven to the left.

In other words, the blown air is concentrated downward with a large amount of airflow, and the first
The result will be as shown in Figure 0. At this time, although it is not known what initial M state the upper and lower deflection blades 1, left deflection blade 5a, and right deflection blade 5b are in, each motor 3, 9a, 9
After driving b, it always rotates to the above position. That is, when the deflection is already at the same position as the position after driving in the initial state, the motor is not rotated by a load resistance such as a stopper, or the motor is idled. After each motor 3, 9a, 9b rotates (before or during rotation as required), the thermistor 2
Compare the temperature in step 1 and the set temperature.

Next, when the temperature t of the thermistor 21 is lower than the first set temperature t and is equal to or higher than the second set temperature 12, the middle motor 3
is rotated to the left, the left motor 9a is rotated to the right, and the right motor 9b is rotated to the left and then stopped. (At this time, the blower motor 16b continues to rotate at high speed.) In other words, the blown air is diverted downward and the 9th
The result will be as shown in the figure. Before this operation, when the deflection blades are already in the downward concentrated state as shown in FIG. 10, only the left and right deflection blades 5a and 5b are substantially deflected.

Next, when the temperature t of the thermistor 21 is lower than the second set temperature t2, the middle motor 3 is rotated clockwise, the left motor 9a is rotated clockwise, and the right motor 9b is rotated counterclockwise and stopped, and the blower motor 16b is stopped. Rotate at low speed.

That is, the blown air becomes a horizontal branch with a small air volume as shown in FIG.

By performing the above operation, when the temperature of the air outlet is high, such as at the start of operation, the entire volume of the air is concentrated downward so as to directly hit the human body with cold air, and when the temperature of the air outlet has cooled down to a certain level, it indirectly hits the human body. The air flows downwardly with a large amount of air to cool the room, and when the outlet temperature is low enough, the air flows horizontally with a small amount of air to cool the entire room.

The effects of this operation at the start of cooling operation will be explained. First, since the air temperature at the start of cooling operation is high, unless the air is applied directly to the human body, it will take too long for the air to cool down. Therefore, it is preferable to apply wind directly to the human body. In other words, by blowing air downward with a large amount of air, a cooling effect that can cool the human body more quickly is achieved.

Next, when the temperature of the air outlet becomes low to a certain extent, the air volume becomes large and the downward branch air blows out, so that the lower part of the room near the living space can be enveloped and cooled. That is, by cooling the area around the human body and cooling the wall surface, the temperature distribution within the living space can be made uniform.

When the blowout temperature becomes even lower, the airflow becomes horizontally divided with a small air volume, so a sufficient cooling effect can be obtained without directly blowing cold air to the human body. That is, at the beginning,
Because the system directly cools the human body and then cools the walls, etc., the temperature distribution is uniform, and there are no local hot spots in the living space.

Effects of the Invention As is clear from the description of the above embodiments, when the air outlet temperature is higher than a certain set temperature, the air volume is concentrated downward. A fast falling effect can be obtained.

Next, when the blowout temperature reaches a certain set temperature, the airflow is diverted downward with a large volume to cool the wall surface without impairing the user's sensation, making it possible to make the temperature distribution in the living space uniform.

Furthermore, when the air outlet temperature is low, the air flow is horizontally divided with a small amount, preventing the air from directly hitting the human body, resulting in a mild cooling effect.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a wind deflection device showing one embodiment of the present invention, Fig. 2 is a configuration diagram showing different connection states of left and right deflection plates in the wind deflection device, and Fig. 3 is a wind deflection device. Figure 4 is a vertical cross-section of the air conditioner, Figure 5 is a refrigerant circuit diagram of the air conditioner, Figure 6 is a perspective view of the air conditioner looking due south.
The figure is an electrical circuit diagram of the main parts of the air conditioner, Figure 7 is a flowchart showing the control details of the air deflection device, Figure 8 is an explanatory diagram showing the horizontal branch blowing state in the air conditioner, and Figure 9 10 is an explanatory diagram showing the downwardly divided blowing state, FIG. 10 is an explanatory diagram showing the downward concentrated blowing state, and FIG. 11 is a block diagram of the apparatus. 1...Vertical wind direction vane, 3...Medium motor, 5a...Left deflection vane, 5b...
Right deflection vane, 9a...Left motor, 9b...
-・Right motor, 10... Indoor unit, 12...
...Air outlet, 15...Indoor heat exchanger, 16
a...Blower, 16b...Blower motor, 17...Compression, 20...Outdoor heat exchanger, 21a. 21e... Temperature sensor, 21b... Current detector, 21c, 21d... Pressure detector, 2
2...Microcomputer, 23...
・Storage unit, 24... Drive signal generation means, 25.
...Rotation speed variable means. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Upper and lower deflection blades 2-Shaft 3-Medium motors 4a, 4b-Ichimatsuki 5a-Ichi left direction 1] Silver 8a, fib-Lever arm qa--Left motor 9b-Right motor Fig. 2 3-Medium motor 9a - One left motor 9b - Right motor 16b ~ Blower motor 2/ - One inch - Mister 24 - IF drive signal generating means 5 - E1 rotation speed variable means 71st! I Figure 9

Claims (1)

[Claims] an indoor unit that includes a compressor that compresses a refrigerant and constitutes a refrigeration cycle together with an indoor heat exchanger and an outdoor heat exchanger, a variable rotation speed blower, and the indoor heat exchanger; an air outlet that blows out air that has passed through the indoor heat exchanger; a vertical deflection blade that vertically deflects the air blown from the air outlet; and a vertical deflection blade that is provided independently on the left and right sides of the air outlet and that a left and right deflection vane that deflects the blown air in the left and right directions; a drive means that reciprocates the upper and lower deflection vanes and the left and right deflection vanes, respectively; and a temperature detection means that detects the temperature of the air blown from the outlet or the room temperature; The apparatus includes an output means for outputting an output to the driving means when the temperature of the air blown from the outlet or the room temperature reaches a predetermined value, and a rotation speed variable means that changes the rotation speed of the blower, so that the temperature of the air blown from the air outlet or the room temperature reaches the predetermined value. Previously, the blower was rotated at high speed with a large amount of air, and the blowing direction was downward and concentrated in the center, and when the blowing temperature or room temperature reached a first predetermined value, the rotation speed of the blower was maintained and the blower was rotated at a high speed. The blowing direction is changed to a downward direction and a direction branched to the left and right, and when the blowing temperature or the room temperature reaches a second predetermined value, the blower is rotated at a low speed with a small air volume, and the blowing direction is turned upward and A method of deflecting the wind direction of an air conditioner by changing the direction to branch to the left or right.