JPH057618B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for deflecting the wind direction of an air conditioner for controlling the blowing direction and the blowing air volume.

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

For example, there is a device that has blow-off ports in the horizontal and vertical directions, and blows out in the horizontal direction when the blow-out temperature is lower than the set temperature, and blows out in the vertical direction when the blow-out temperature is higher than the set temperature. (Tokuko Showa 55-10813
In other words, the configuration of this first conventional example prevents so-called cold draft, and can enhance the heating effect. Furthermore, in order to improve comfort in a large living space, there is a device that swings the left and right deflection blades and the top and bottom deflection blades at a constant period. (US Pat. No. 3,257,931) This second conventional example is shown in FIGS. 11 and 12.

In the figure, upper and lower deflection blades 1 are provided on the front surface of the air outlet 101 to deflect the blown air in the vertical direction.
02. Left and right deflection vanes 103 and 104 are provided to deflect the blown air in the horizontal direction. The upper and lower deflection blades 102 are connected to a bellows 107a via a coupling device 105a and a lever arm 106a. In addition, the left and right deflection blades 103 and 104 are
Bellows 107 via connectors 105b, 105c and lever arms 106b, 106c, respectively.
b, 107c. Further, heaters 108a, 108b, 108c are wound around each bellows 107a, 107b, 107c, respectively. 109 are heaters 108a, 108b, 108
This is a micro switch that controls the energization of c.

In the above configuration, heaters 108a, 108
The bellows 107a, 107b, 107c extend by applying electricity to the heaters 108a, 108b, and 108c, and the extension of the bellows 107b operates a micro switch to stop the electricity supply to the heaters 108a, 108b, and 108c. As a result, the bellows 107a,
107b and 107c are cooled and contracted.

By repeating this operation, the effect of fluctuating the blown air can be obtained.

Problems to be Solved by the Invention However, in the first conventional configuration described above, there is only vertical deflection control, and the blowout is limited to the horizontal direction especially during cooling operation. When there is a person in the living room, the movement of air within the living space becomes large, which does not feel good when sleeping.

In addition, when the air conditioner stops cooling, or when the room temperature rises above a certain temperature (when the living space is large or there are a lot of people coming and going, and the air conditioner's capacity is insufficient to cool the entire room), air vents Since the direction remains horizontal, only the upper part of the living space is cooled.
It takes time to cool the lower part of the living space and the walls,
Improvements in comfort were desired.

In addition, although the second conventional configuration allows the airflow to be deflected in the horizontal direction, it swings regardless of the airflow temperature, making it particularly difficult to shorten the fall time at the start of cooling operation and to perform efficient cooling. I had the problem that I couldn't do it.

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

Means for Solving the Problems In order to solve the above problems, the present invention provides a compressor that compresses a refrigerant and constitutes a refrigeration cycle together with an indoor heat exchanger and an outdoor heat exchanger, a blower, and the indoor heat exchanger. an indoor unit having a heat exchanger therein; an air outlet provided in the indoor unit that blows out air that has passed through the indoor heat exchanger; and a vertical deflection blade that vertically deflects the air blown out from the air outlet; Left and right deflection blades that are independently provided on the left and right sides of the air outlet and that deflect the air blown out from the air outlet in the left and right directions, and drive means that reciprocate the vertical deflection blade and the left and right deflection blades, respectively;
An output means is provided for outputting an output to the driving means when the room temperature reaches a predetermined value, and during cooling operation, when the room temperature is higher than the predetermined value, the air blowing direction is set downward and branched to the left and right, and the blower is rotated. When the room temperature falls below a predetermined value, the air blowing direction is changed to horizontal or upward, branching to the left and right, and the rotational speed of the blower is reduced to a low speed.

Effect: With the above-mentioned means, the air conditioner air deflection device of the present invention changes from the high wind speed of the lower branch outlet to the low wind velocity of the horizontal branch outlet when the outlet temperature or the room temperature reaches a predetermined set temperature. When the temperature has dropped to a certain level, the movement of air within the living space is reduced and the air is mixed only in the upper part of the living space, allowing cooling to be carried out so that the cold air does not hit the human body directly but instead circulates around it. . Further, until the room temperature reaches a predetermined temperature, cooling can be performed around the lower part of the living space (particularly the wall surface), thereby shortening the cooling time and improving comfort.

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

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

As shown in the figure, the vertical deflection blade 1, which is slightly curved in the blowing direction and deflects the air vertically by the Coanda effect, has a shaft 2 in its longitudinal direction, and this shaft 2 is connected to a medium motor ( Stepping motor) 3. The left and right deflection blades that horizontally deflect the blown air by the Coanda effect are composed of a left deflection blade 5a connected to a coupler 4a and a right deflection blade 5b connected to a coupler 4b. and left deflection blade 5
a is connected to a left motor (stepping motor) 9a via a blade lever arm 6a, a rod 7a, and a motor lever arm 8a, and a right deflection blade 5b.
is connected to a right motor (stepping motor) 9b via a blade lever arm 6b, a rod 7b, and a motor lever arm 8b. Here, the left deflection blade 5a is slightly curved so that its center is to the left of this left deflection blade 5a, and the right deflection blade 5b is slightly curved so that its center is to the right of this right deflection blade 5b. are doing. That is, this is to cause the aforementioned Coanda phenomenon to occur on both sides 13a and 13b of the air outlet 12, which will be described later, and to 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 9
a, the right motor 9b constitutes the driving means,
It is possible to use one motor to drive the left and right deflection vanes, and furthermore, by using a switching means such as a gear or a clutch, it is also possible to control the upper and lower deflection vanes 1 and the left and right deflection vanes 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 temperature detection means and set temperature storage means, which are essential requirements of the present invention. It turns out. Also, the left and right deflection blades are the left deflection blades 5.
The reason why the blade is divided into two parts, a and right deflection blade 5b, is that the purpose of the present invention is to easily perform the flow dividing operation and also to be able to control the wind direction independently of each other. It may be configured to subdivide, or conversely, it may be connected by a single connector 4 as shown in FIG. 2 without being divided. The reason why the left deflection blade 5a and the right deflection blade 5b are curved is to not only deflect the wind direction by the Coanda effect but also to enhance the concentration and splitting effect that is the object of the present invention. If the effect is not taken into account, the shape may be a planar shape that is not curved, or even the curved directions may be reversed.

Next, FIG. 3 shows a perspective view of the indoor unit 10 to which the wind direction deflection device shown in FIG. 1 is installed.

In the figure, the 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 5.
A blower outlet 12 having a and 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.

A side sectional view of this indoor unit 10 is shown in FIG. An indoor heat exchanger 1 is installed at a position facing the suction port 11.
5, from this indoor heat exchanger 15 to the air outlet 12
A blower 16 with a variable rotation speed is provided in the ventilation path leading to the air passage. The blower is connected to the output side of a microcomputer, which will be described later, and operates in conjunction with a wind direction deflection device.

Next, FIG. 5 shows the refrigeration cycle of this embodiment.

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 supplied to the compressor 17, the four-way valve 18,
It flows in the order of the indoor heat exchanger 15, the capillary tube 19, and the outdoor heat exchanger 20, and during cooling operation, it flows in the order of the compressor 17, the four-way valve 18, the outdoor heat exchanger 20, the capillary tube 19, and the indoor heat exchanger 15. flows.

Here, 21a to 21d are temperature detection means that indirectly detect the temperature of the air outlet. That is, 21a
21b is a current detector that detects the current of the compressor 17; 21c is a pressure sensor that detects the pressure of the discharge pipe of the compressor 17; 21d is a temperature sensor that detects the indoor heat exchanger 20 pipe temperature; Exchanger 15
This is a pressure detector that detects the pipe pressure. In order to detect the blowout temperature, it is conceivable to provide a temperature sensor directly at the blowout port 12, but it can also be detected from the temperature, pressure, and current of each of the above parts, and any one of them can be selected or used in combination. It is possible.

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

Next, a circuit diagram of the main part of this embodiment is shown in FIG. Inside the microcomputer 22, there is a storage section 23 that stores a preset temperature;
The driving signal generating means 24 generates an appropriate output signal based on a comparison between the set value stored in the input value and the input value. A thermistor 21, which is a temperature detection means, is connected to the input side of this microcomputer via a comparator 25, and a buffer 26 that supplies pulse output to the variable rotation speed blower 16 and each motor 3, 9a, and 9b is connected to the output side. A middle motor 3, a left motor 9a, a right motor 9b, and a variable rotation speed blower 16, which are driving means, are connected through the motor. Note that 27 is a bias resistor and 28 is a scan resistor. Now, to explain the relationship between the block diagram shown in FIG. 10 and the circuit shown in FIG. 6, the thermistor 21 shown in FIG.
corresponds to the set temperature storage means in FIG. 10, the drive signal generation means 24 in FIG. 6 corresponds to the drive signal generation means in FIG. 10, and the drive signal generation means 24 in FIG.
9b and 16 correspond to the driving means in FIG.

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

The room temperature t is the temperature detected by the thermistor 21, and _t1 is the set temperature. When this indoor temperature t is lower than the set temperature, the middle motor 3 is rotated clockwise.
The left motor 9a is rotated to the right, the right motor 9b is rotated to the left and stopped, and the variable rotation speed blower motor is operated at low speed. Here, rotating the middle motor 3 to the left means moving the upper and lower deflection blades 1 to the horizontal position, or to the upper position if necessary, and rotating the left motor 9a to the right moves the left deflection blade 5a to the left and the right motor 9b to the left. Rotating indicates driving the right deflection blade 5b to the right. Further, operating the variable rotation speed blower at a low speed indicates that the wind speed is reduced. That is, the blown air becomes a horizontal branch flow with a low wind speed as shown in FIG. At this time, it is not known what initial state the upper and lower deflection blades 1, left deflection blade 5a, and right deflection blade 5b are in, but after driving the wind direction deflection motors 9a, 9b, and 9c, they are always in the above positions. It rotates. That is, when the deflection is already at the same position as the position after driving in the initial state, the motor is not allowed to rotate using a no-load resistance such as a stopper, or the motor is allowed to rotate idly. And each motor 9a, 9b,
After the rotation of the thermistor 9c, the temperature of the thermistor 21 and the set temperature are compared again before or during the rotation as necessary.

Next, if the temperature t of the thermistor 21 is higher than the set temperature, the middle motor 3 is rotated counterclockwise, and the left motor 9a
rotate to the right, rotate the right motor 9b to the left, and stop.
Operate the variable speed blower motor at high speed. In other words, the blown air becomes a downward branch flow with a high wind speed.

The effect in such an operation will be explained next.

First, when the room temperature has dropped to a predetermined set temperature, the movement of air in the living space is reduced by using horizontal branch blowers at low wind speeds, and the air is mixed only in the upper part of the living space, which is harmful to the human body. The air conditioner can be cooled by circulating the air from the surrounding area without being directly hit by the cold air, improving comfort.

In addition, until the room temperature reaches a predetermined temperature (when the room temperature is high, such as at the start of cooling operation), by using a high-velocity downward diversion, the air will be concentrated in the lower part of the living space, especially from the wall surface. It can cool the air, make the temperature distribution uniform, and furthermore, the cooling effect can be stopped earlier, improving comfort and shortening the operating time of the compressor, making it an economically cheap and effective cooling system. can be done.

EFFECTS OF THE INVENTION As is clear from the description of the above embodiments, the present invention, when the room temperature reaches a predetermined set temperature, changes the high wind speed downward branch flow to the low wind speed horizontal branch flow, thereby improving the living space. By reducing the movement of internal air and performing air mixing only in the upper part of the living space, cooling can be performed by circulating the cold air from the surrounding area without directly hitting the human body, improving comfort.

In addition, until the room temperature reaches a predetermined temperature, high-velocity downward branching air is used to intensively cool the lower part of the living space, especially around the walls, which helps to even out the temperature distribution. be able to. Especially when the room temperature is high, such as at the start of cooling operation, the cooling effect can be stopped sooner, improving comfort and shortening compressor operation time, providing economical and effective cooling. can be done.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a wind deflection device showing an embodiment of the present invention, Fig. 2 is a configuration diagram showing different connection states of left and right deflection blades in the wind deflection device, and Fig. 3 is a diagram showing the wind deflection device in different connection states. A perspective view of the equipped air conditioner, Fig. 4 is a vertical cross-sectional view of the air conditioner, Fig. 5 is a refrigerant circuit diagram of the air conditioner, and Fig. 6 is an electrical circuit diagram of the main parts of the air conditioner. , FIG. 7 is a flowchart showing the control contents of the air deflection device, FIG. 8 is an explanatory diagram showing the horizontal branch blowing state in the air conditioner, and FIG. 9 is an explanatory diagram showing the downward branch blowing state.
Fig. 10 is a block diagram showing the control contents, Fig. 11
12 are a perspective view and a sectional view of a main part of a conventional wind direction deflection device, respectively. 1... Vertical wind deflection blade, 3... Middle motor, 5
a...Left deflection blade, 5b...Right deflection blade, 9a...
... Left motor, 9b ... Right motor, 10 ... Indoor unit, 12 ... Air outlet, 15 ... Indoor heat exchanger, 16 ... Variable rotation speed blower, 17 ... Compressor,
20... Outdoor heat exchanger, 21a, 21e... Temperature sensor, 21b... Current detector, 21c, 21d
... Pressure detector, 22 ... Microcomputer, 23 ... Storage section, 24 ... Drive signal generation means.

Claims (1)

[Scope of Claims] 1. An indoor unit that includes a compressor that compresses a refrigerant and that includes an indoor heat exchanger and an outdoor heat exchanger to form a refrigeration cycle, a blower, and the indoor heat exchanger, and this indoor unit. an air outlet provided in the air outlet that blows out the air that has passed through the indoor heat exchanger; a vertical deflection blade that vertically deflects the air blown out from the air outlet; Left and right deflection blades that deflect air blown out from the air outlet in the left and right directions; drive means that reciprocates the upper and lower deflection blades and the left and right deflection blades, respectively; and output to the drive means when the room temperature reaches a predetermined value. An output means is provided, and during cooling operation, when the room temperature is higher than a predetermined value, the air blowing direction is set downward and branched to the left and right, and the rotational speed of the blower is set to high speed, and when the room temperature falls below the predetermined value. A method for deflecting the wind direction of an air conditioner, wherein the air blowing direction is changed to horizontal or upward and branched to the left and right, and the rotational speed of the blower is made low.