JPS6210536A - Device for deflecting air flow direction in air conditioner and method of deflecting air flow direction thereof - Google Patents

Abstract

PURPOSE:To improve comfortableness when a low-temperature air flow is blown off by operating a deflection vane so that the blow-off direction is branched in both right and left directions when the temperature of blow off air reaches a value which is less then a predetermined value. CONSTITUTION:In a case where the temperature (t) of a thermistor 21 for detecting the blow-off temperature is more than a second set temperature, a middle motor 3 is rotated leftwards, a lefthand motor 9a is rotated leftwards, righthand motor 9b is rotated rightwards and stopped, and the blow off air becomes concentrated downwardly, thus applying the warm air flow directly to one's body to improve the space heating effect. When the room temperature comes near to the set temperature, the blow-off temperature is gradually lowered. When the blow-off temperature reaches a first set temperature, the righthand motor 9b is rotated in the lefthand and stopped, and the lefthand motor 9a is rotated in the righthand, and stopped. As a result, the blown off air assumes downward dispersion blow-off from the downward concentrated blow-off so that blown-off air does not directly hit one's body. Next, when further the blow-off temperature is lowered, and becomes lower than the first set temperature, the middle motor 3 is rotated in the righthand, a horizontal dispersion blow-off is assumed and a cool air flow does not run on the floor surface, and the cool air flow does not impart a cool air flow feeling to user's body.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wind direction deflection device and a wind direction deflection method for controlling the blow 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, it has blow-off ports in the horizontal and vertical directions, and when the blow-out temperature is lower than the set temperature, it blows out in the horizontal direction,
There is a device that blows out vertically when the temperature is higher than the set temperature. (Japanese Patent Publication No. 55-10813) That is, the configuration of this first conventional example prevents so-called cold draft, and can enhance the heating effect.

Furthermore, in order to improve the comfort in a large living space, there is a device that squeaks left and right biased blades and upper and lower biased 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, the front surface of the air outlet 101 includes upper and lower deflection blades 102 that deflect the blown air in the vertical direction, and left and right deflection blades 103 and 104 that deflect the blown air in the horizontal direction.
is provided. The upper and lower biased blades 102 are connected to the bellows 10 via a connecting bar 105a and a lever arm 106a.
7a. Also, left and right biased blades 103.10
4 is a bellows 107b via connecting bars 105b, 105c and lever arms 106b, 106c, respectively.

107c. In addition, each bellows 107a,
107b, 107cKH each heater 108a110
8b and 108c are wound.

This is a microswitch that controls the energization of the 109 heaters 108&, 108b, and 108c.

In the above configuration, heaters 108a and 108b.

By energizing 108C, the bellows 107a1
107b and 107cld expand, and the expansion of the bellows 107b operates the microswitch to activate the heater 108a.
, 108b, and 108c are stopped. the result,
The bellows 107a, 107b, and 107c work while being cooled.

By repeating this operation, the effect of fluctuating the blown air can be obtained.Problems to be Solved by the InventionHowever, in the first conventional configuration described above, deflection can only be controlled in the vertical direction. The cold air when the compressor is stopped can be prevented from directly hitting the human body, but if the thermostat's O
N, OFF# Every time a person makes a work, cold air passes through the human body from the feet to the head, and also stirs the entire indoor air, so some kind of improvement was required.

Furthermore, with such a configuration, especially during low-capacity, low-airflow operation, warm air concentrates in the upper part of the room and is not used for heating, making it impossible to obtain the "cold head and warm feet" effect and making the temperature feel lower than the actual temperature. There was a problem I felt.

In addition, the second conventional configuration is capable of deflecting the air outlet in the horizontal direction, but since the air outlet squiggles regardless of the air outlet temperature, there is a problem in that efficient heating cannot be performed according to the Suita temperature or the room temperature. It had

The present invention aims to improve the comfort of a living space using an air conditioner, especially when the thermostat is turned off during heating operation, and in a variable capacity air conditioner that uses compressor rotation speed control using variable frequency control. The purpose is to improve comfort when the capacity is low, that is, when low temperature air is blown.

Means for Solving the Problems In order to solve the above problems, the present invention compresses the refrigerant,
An indoor unit that includes a compressor, a blower, and the indoor heat exchanger that constitute a refrigeration cycle together with an indoor heat exchanger and an outdoor heat exchanger, and air that is provided in this indoor unit and that has passed through the indoor heat exchanger. an air outlet that blows out air, vertically biased blades that vertically deflect the air blown from the air outlet, and vertical deflection blades that are provided independently on the left and right sides of the air outlet and that branch the air blown out from the air outlet in the left and right directions. a driving means for independently driving the upper and lower biasing blades and the left and right biasing blades, a temperature detection means for detecting the blowout temperature, and a temperature setting memory for storing a preset temperature. and in a state where the air blown out from the air outlet is blown downward and in the front direction, when the blown air temperature reaches a predetermined value or less, the left and right biased blades are moved so that the air blowing direction is It is driven so that it branches left and right.

Operation With the above configuration, the air conditioner wind deflection device of the present invention has the following effects:
When the air outlet temperature or the room temperature drops below a certain set temperature, the downward concentrated air outlet changes to a downward branch air outlet, so when the air outlet temperature is low during heating operation, the cold and hot air escapes to the corners of the living space, directly hitting the human body. Without a doubt,
I don't feel any cold draft. Furthermore, as for the heating effect, since the air is blown downward, compared to the conventional example in which air is blown out horizontally, the warm air layer does not stay near the ceiling and does not impair the heating effect. Furthermore, when the temperature of the air outlet is high, the lower central part of the living space is heated, thereby improving the temperature distribution and comfort.

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 vertically biased blade 1 that deflects the wind direction vertically 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 blades that deflect the blown air in the horizontal direction by the Coanda effect are composed of a left deflection blade 5a connected to a connecting bar 4a and a right deflection blade 5b connected to a connecting bar 4b. And left-biased blade 5aLf
i, lever arm 5a for blade, rod 7a.

It is connected to a left motor (stepping motor) 9a via a motor lever arm 8a, and the right-biased 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-biased blade 5
a [Slightly curved so that its center is to the left of this left-biased blade 5a] The right-biased blade 5b is slightly curved so that its center is to the right of this right-biased blade 5d. 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 to drive the left and right biased blades, and furthermore, by using a switching means such as a gear or a clutch, it is possible to drive the upper and lower biased blades 1 and the left and right biased 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. The reason why the spun left and right biased blades are divided into two parts, the left biased blades 5a and the right biased blades 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 wind and surface control, it may be further divided into smaller sections, or conversely, it may be connected to a single connecting bar 4 as shown in FIG. 2 without being divided.

The left-biased blades 5a and right-biased blades 5b are curved in order to not only deflect the wind direction using the Coanda effect but also to enhance the concentration and splitting effects that are the object of the present invention. If this is not taken into account, it may be a planar shape that is not curved, or it may be a shape in which the round directions are reversed.

Next, a perspective view of the indoor unit 10 equipped with the wind direction deflection device shown in FIG. 1 is shown.

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 vertically biased blades 1 and left and right biased blades 5a.

An air outlet 12 having a diameter 5b is provided. Both sides 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 15 is provided at a position facing the suction port 11 , and a blower 16 is provided in a ventilation path from the indoor heat exchanger 15 to the outlet 12 .

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 21b 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.
A pressure detector detects the pressure of the discharge pipe of the indoor heat exchanger 15, and a pressure detector detects the pipe pressure of the indoor heat exchanger 15. In order to detect the temperature of the air outlet, it is conceivable to provide a temperature sensor directly at the air outlet 12, but the temperature of each of the above parts,
It can also be detected from pressure and current, and either one can be selected or used in combination. Also 21a
This is a temperature detector that detects the suction temperature, and is an example of a temperature detection means that detects the room temperature, and its mounting location is not limited to the suction port.

Next, a circuit diagram of the main part of this embodiment is shown in FIG. The microcomputer 22 includes a storage section 23 that stores a preset temperature, and a drive signal generation means 24 that generates an appropriate output signal from a comparison between the set value stored in the storage section 23 and an input value. There is. A thermistor 21 serving as temperature detection means is connected to the input side of this microcomputer via a comparator 25, and the output side of each motor 3.
A middle motor 3, a left motor 9a, and a right motor 9b, which are drive means, are connected via a buffer 26 that supplies pulse output to the motors 9a and 9b. Here, 27 (fi bias resistance) and 28 are scan resistances.

Next, the operation of this embodiment is shown in FIG. The figure is a 70-chart during heating operation.

The blowout temperature t is the temperature detected by the thermistor 21, and tl and t2 are set temperatures. When the blowing temperature t is lower than the first set temperature t1, the middle motor 3 is rotated clockwise, the left motor 9a is rotated clockwise, and the right motor 9b is rotated counterclockwise and then stopped. Here, rotating the middle motor 3 to the right moves the upper and lower eccentric blades 1 to the horizontal position (if necessary, to the upper position)
To rotate the left motor 9a clockwise is to rotate the left biased blade 5a.
to the left, and rotating the right motor 9b to the left indicates driving the right biased blade 5b to the right.

That is, the blown air becomes horizontally divided as shown in FIG. At this time, the upper and lower biased blades 1, the left biased blades 5a
Although it is not known in what initial state the right-biased blades 5bH1 and 5bH1 are, they always rotate to the above-mentioned positions after each motor 9a, 9b, 3 is driven. 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 9a, 9b, 30 rotations, the temperature of the boomister 21 and the set temperature are again compared as necessary before or during rotation.

Next, when the temperature t of the boomister 21 is higher than the first set temperature t1 and lower than the second set temperature t2, 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. That is, the blown air becomes a downward branch as shown in FIG. Before this operation, the 8th
When the flow is in a horizontally divided state as shown in the figure, only the upper and lower biasing blades 1 are substantially deflected.

Next, when the temperature t of the thermistor 21 is higher than the second set temperature t2, the middle motor 3 is rotated to the left, the left motor 9a is rotated to the left, and the right motor 9b is rotated to the right and then stopped. That is, the blown air is concentrated downward, as shown in FIG.

In addition, in variable capacity air conditioners that use variable frequency control to control the rotation speed of the compressor, it is common to gradually reduce the capacity as the room temperature approaches the set temperature. When the amount of air blown from the indoor unit is constant, the temperature of the air blown out gradually decreases. That is, when the temperature t of the thermistor 21 is lower than the second set temperature t2 and higher than the first set temperature t1, the right motor 9b is rotated counterclockwise and stopped, and the left motor 9a is rotated clockwise and stopped. do.

As a result, the blown air becomes distributed downward rather than concentrated downward, changing from the state shown in FIG. 10 to the state shown in FIG. 9.

Next, the blowing temperature further decreases, and the temperature t of the thermistor 21
When the temperature becomes lower than the first set temperature t1, the middle motor 3 is rotated clockwise. That is, the downward distributed air flow becomes horizontally distributed air air, and the state shown in FIG. 9 changes to the state shown in FIG. 8.

By performing the above operations, the cold air, which is not pleasant for the user's body, is diverted horizontally so that it does not directly hit the human body, and when the temperature of the blast is warmed to a certain extent, it is diverted downward so that it indirectly hits the human body. When the temperature of the air is high enough, there is no problem even if the air is directly sprayed onto the human body, so the air is concentrated downward.

In addition, in variable capacity air conditioners that use variable frequency control to control the rotation speed of the compressor, it is common to gradually reduce the capacity as the room temperature approaches the set temperature. , if the amount of air blown from the indoor unit is constant, the blown air temperature will gradually decrease.

As a result, you will be exposed to cold and hot air directly,
The downward concentrated blowout is replaced by a downward branching blowout, and as the blowing temperature further decreases, the downward diverted blowout becomes a horizontally upward separated blowout.

This operation will be explained from the start of the heating operation to the time when the room temperature is stabilized, together with its effects.

First of all, since the temperature of the air outlet immediately after the heating operation starts is low, it is undesirable for it to directly hit the human body.Also, even if it does not hit the human body directly, the air in the living space moves a lot.
i It is preferable that the air movement #I in the living space be small because it will feel lower than the actual room temperature.

In other words, by using horizontal branching air, the blown air mixes only in the upper part of the living space, providing a heating effect without making the human body feel cold.

Next, when the temperature of the air outlet becomes high to a certain extent, the air outlet is diverted downward, so that the heating effect is performed from the periphery of the living space. That is, even in this case, the movement of air within the living space is reduced and heating can be performed without making the human body feel cold.

Furthermore, by heating the walls near the floor first, efficient heating can be performed without the heating layer remaining near the ceiling, shortening the start-up time and making the temperature distribution within the living space uniform.

When the temperature of the airflow becomes even higher, the airflow becomes concentrated downward, allowing warm air to be applied directly to the human body, thereby increasing the heating effect.

At this time, since the wall surface has already been warmed to some extent, there is no possibility that a low temperature area will occur in the living space.

In addition, in variable capacity air conditioners that use variable frequency control to control the rotation speed of the compressor, it is common to gradually reduce the capacity as the room temperature approaches the set temperature. If the amount of air blown from the indoor unit is constant, the blown air temperature will gradually decrease. That is, when the room temperature becomes stable, the temperature of the air blown from the air conditioner reaches the temperature of the warm temperature, which is uncomfortable for the human body, so the air is diverted downward to avoid direct contact with the human body.

However, it does not hit the human body, but because it blows downward,
The heating effect on the living space can be equivalent to that of downward concentrated air blowing. That is, by performing heating from the floor surface around the living space, it is possible to improve the temperature distribution in the living space without causing a layer of warm air to accumulate near the ceiling, and to improve comfort. Furthermore, if the blowout temperature drops further, the downward branching blowout changes to the horizontal (upward) branching blowout, so that the cold air no longer runs across the floor and does not give a cold feeling to the human body.

In the above-mentioned embodiment, the above-mentioned operations are performed according to the temperature of the air outlet to control the heating operation, but it is also possible to improve the comfort of the living space by performing the above-mentioned operations according to the room temperature.

In other words, for example, during cooling operation, when the room temperature t is higher than the second set temperature t2 at the start of operation, the concentrated downward blowing blows cold air to the center of the living space, which instantly increases the feeling of cooling and cools the room. The smoothness of driving, that is, the level of comfort at the start of driving is improved.

In addition, the operation is continued and the room temperature t becomes the first set temperature t1 and the above t.
If the cold air is present in the area between 2 and 2, it means that the body has been directly exposed to cold air for a certain period of time, so instead of directing the cold air to the body, blow the wind around the body and hit the body directly. By reducing the amount of wind, it is possible to prevent excessive cooling and improve the temperature distribution in the living space by cooling the surrounding area.

In addition, when the room temperature t falls below the room temperature t1, by using horizontal (upward) branch blowing, cooling can be carried out from the ceiling surroundings and the room temperature can be stabilized. Therefore, it is possible to perform effective cooling with a high degree of comfort without making people think that the cooling operation is being performed in an intrusive manner.

Effects of the Invention As is clear from the description of the embodiments described above, the present invention changes from a downward concentrated air outlet to a downward branching air outlet when the air outlet temperature falls below a certain set temperature. By sending high-temperature air to the floor, the feeling of heating is increased, and by sending high-temperature air with low specific gravity to the floor surface, the room temperature distribution is improved.

Furthermore, when the temperature of the blowing air drops, the blowout is directed downward, so the cooled air does not directly hit the human body, so the user does not experience unpleasant sensations such as a cold wind feeling or a draft feeling. In addition, since this is a diversion blowout and a downward blowout, a layer of warm air does not accumulate on the ceiling surface, and hot air is effectively sent to the floor surface without hitting the human body, improving the efficiency of heating operation. This will not cause a drop in temperature or worsen the room temperature distribution.

Furthermore, even when the above operations are performed due to changes in room temperature, effective heating and cooling can be performed in the same way.

[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 of the same wind deflection device. Fig. 4 is a longitudinal sectional view of the air conditioner, Fig. 5 is a refrigerant circuit diagram of the air conditioner, and Fig. 6 is an electrical circuit of the main parts of the air conditioner. Fig. 7 is a 70-chart showing the control details of the air deflector, 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 branching blowing state. , FIG. 10 is an explanatory diagram showing the downward concentrated blowing state, FIGS. 11 and 12.
The figures are a perspective view and a sectional view of a main part of a conventional wind direction deflection device, respectively. 1... Vertical wind direction deflection spring, 3... Gimotor, 5a... Left deflection blade, 5b...
Right biased blade, 9a...Left motor, 9b...Right motor drive, 1o...Indoor unit, 12...
...Air outlet, 15...Indoor heat exchanger, 17...
... Compressor, 2o... Commercial heat exchanger, 21a,
21 e...Temperature sensor, 21b...
・Current detector, 21c121d...Pressure detector, 22...Microcomputer, 23.
- Storage section, 24... Drive signal generation means. Name of agent: Patent attorney Toshio Nakao and 1 other person
...11 Homozaka 3...Nakagami-Yu 1st rlA, 5L,, 4. ! Direction al, 5b,,,
Seki l south #iI shoulder armpit... friend 2b... right motor Fig. 2 14... lower surface O Fig. 4 1θ... hall unit I51. Zhao Hei Jubun Construction Equipment 3...Nakagami-Ta 9a...Left is also -5 96,, Upper right-Ta 23...Note *, Qi 24..., *a Iebu 3i 4th grade 6kuraζ27...pa'
Ias] 5 desks 2g...Skin 8 years old 9th figure 7th figure 8th figure lθ...
i unit unit Iθ

Claims (10)

[Claims] (1) 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 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 that is blown out from the air outlet; left and right deflection vanes for branching and deflecting air in the left and right directions; driving means for independently driving the upper and lower deflection vanes and the left and right deflection vanes to deflect the air; and a temperature for detecting the temperature of the air blown from the outlet or the room temperature. A detection means, a set temperature storage means for storing a preset temperature, and a temperature detection means in a state where the left and right biased blades are positioned so that the air from the outlet is directed downward and toward the front. Generating a drive signal that detects that the detected temperature has reached a set temperature stored in a set temperature storage means and sends a signal to the drive means to rotate the left and right deflection blades so that air is branched to the left and right. An air conditioner wind deflection device comprising means. (2) The wind direction deflection device for an air conditioner according to claim 1, wherein the temperature detection means for detecting the temperature of the air outlet is a temperature detector for detecting the pipe temperature of an indoor heat exchanger. (3) A wind direction deflection device for an air conditioner according to claim 1, wherein the temperature detection means for detecting the temperature of the air outlet is a compressor current or a current detection means including the compressor current. (4) The wind direction deflection device for an air conditioner according to claim 1, wherein the temperature detection means for detecting the blowout temperature is a pressure means for detecting the pressure of a compressor discharge pipe or an indoor heat exchanger. (5) Claim 1, wherein the temperature detection means for detecting the outlet temperature is constituted by a temperature detector for detecting the pipe temperature of the indoor heat exchanger, and a compressor current or a current detection means including the compressor current. A wind direction deflection device for an air conditioner as described in Section 1. (6) 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 blower and the indoor heat exchanger; an air outlet that blows out the air that has passed through the indoor heat exchanger; a vertical deflection blade that vertically deflects the air that is blown out from the air outlet; left and right deflection vanes that deflect the air left and right in the left and right directions; driving means that reciprocates the upper and lower deflection vanes and the left and right deflection vanes, respectively; an output means for outputting the output to the means, and before the air blowing temperature or the room temperature reaches a predetermined value, the air is directed downward and concentrated in one place, and when the air blowing temperature or the room temperature reaches the predetermined value, , a method for deflecting the wind direction of an air conditioner, which changes the air blowing direction downward and into directions branching to the left and right. (7) The method for deflecting the wind direction of an air conditioner according to claim 6, wherein the temperature detection means for detecting the air temperature is a temperature detector for detecting the pipe temperature of an indoor heat exchanger. (8) The method for deflecting the wind direction of an air conditioner according to claim 6, wherein the temperature detection means for detecting the air temperature is a compressor current or a current detection means including the compressor current. (9) The method for deflecting the wind direction of an air conditioner according to claim 6, wherein the temperature detection means for detecting the air temperature is the pressure detection means for detecting the pressure of the compressor discharge pipe or the pipe of the indoor heat exchanger. . (10) Claim 6, wherein the temperature detection means for detecting the air temperature is constituted by a temperature detection section for detecting the pipe temperature of the indoor heat exchanger, and a compressor current or a current detection means including the compressor current. The described air conditioner wind deflection method.