JPH02171539A - Air conditioner - Google Patents

Abstract

PURPOSE:To keep a superior distribution of an interior temperature during a heating operation by a method wherein a set angle of blowing vanes is increased or decreased with an increased or decreased temperature difference between a blowing air temperature and a sucked air temperature and a floor surface contacting air speed of the blowing air is controlled to become a set value in such a way as a difference between an upper interior temperature and a lower interior temperature becomes a desired value. CONSTITUTION:An air suction port 4 is provided with a suction temperature sensor 13 for use in sensing a temperature Tr of a sucked air Wo. An air blowing port 5 is provided with a blowing temperature sensor 14 for sensing a temperature To of a blown air stream W and an air speed sensor 15 for sensing a blowing air speed Vo of the blown air stream W. Detected data signals from the temperature sensors 13 and 14 and an air speed sensor 15 are inputted to a control means 16. During heating operation, an discharged air volume Q of a fan 3 and a blowing air speed Vo at the air blowing port 5 are set, a set angle alphaof the blowing vanes 6 is increased or decreased with an increased or decreased temperature difference DELTAT between a blowing air temperature To and a sucked air temperature Tr and a floor surface air contacting speed Vf of a blowing air flow W is controlled to attain a set value Vfo (= 1m/s) in such a way as a temperature difference of an upper part and a lower part of a room DELTAt may become a desired value.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air conditioner, and more particularly to a blowout airflow control device for an air conditioner installed at a high location such as near the ceiling.

(Prior art) Generally, in the case of an air conditioner installed in a high place such as near the ceiling, the air outlet formed on the front of the air conditioner body is equipped with blowing blades for adjusting the direction of the blown air. +1t,
By changing the setting angle of the blow-off vanes, airflow has been controlled so that the air blows out horizontally (during cooling operation) or downwardly tilted (during heating operation). 56-82445).

(Problem to be Solved by the Invention) In the case of an air conditioner configured as described above, the angle adjustment of the blowing blades during heating operation is currently left to the user's choice, and the change in air volume or Since it is designed to be controlled independently of changes in the blowing air temperature,
There is a problem in that it is difficult to maintain a good indoor temperature distribution during heating operation.

By the way, FIG. 11 shows the blown air flow W blown out from the air outlet 5 of the air conditioner main body 1 during heating operation.
According to this diagram, the blown air flow W blown out from the air outlet 5 of the air conditioner main body 1, after landing on the floor surface F, is shown. It can be seen that the light is diffused throughout the room R. Therefore, it can be seen that the wind speed at the time when the blown air flow W lands on the floor surface F, that is, the floor surface landing wind speed V'' is an important factor for maintaining a good indoor temperature distribution.

In other words, when considered from the perspective of indoor temperature distribution, the vertical temperature difference in the room R is greatly influenced by the magnitude of the wind velocity vr at which the blown air flow F lands on the floor. Set the wind speed vr to a predetermined value ■" (for example, 1 m/
It is known from experience that when the temperature difference Δt is above s), the average temperature difference Δt between the upper and lower sides in the room R becomes a good value (for example, Δt=5° C. or less).

On the other hand, the factors that determine the state of the blowing air flow W are the blowing air ff1Q, the suction air temperature Tr, and the blowing air temperature 1゛o.
There is a temperature difference ΔT, a blowout angle θ (that is, an angle of inclination of the blowout air flow W from the horizontal), and a blowout air volume ■0. and,
By appropriately controlling these factors, the inventor has determined that the floor surface landing wind speed f is set to a predetermined value Vr (i.e., room R
It was discovered that the average temperature difference 'Δt between the upper and lower sides can be maintained at a good value), and the present invention was developed.

The present invention has been made in view of the above points, and by appropriately controlling various factors that determine the state of the blown air flow, the wind speed at which the blown air flow lands on the floor is controlled to a desired value, and the The purpose of this is to maintain a good indoor vertical temperature distribution during heating operation.

(Means for solving the problem and its effect) Claim 1
In the invention, as shown in the drawings, in order to solve the above problems,
Intake air W is sucked in from an air suction port 4 of an air conditioner main body l that includes an air heat exchanger 2 and a fan 3. of,
After the air is converted into conditioned air by the heat exchange action of the air heat exchanger 2, the air conditioner body! The air is blown into the room from the air outlet 5, and the air outlet 5 is provided with a blower blade 6 whose angle is variable by the blower blade drive means 8, and the set angle α of the blower blade 6 is changed. In an air conditioner in which the blowing angle θ of the blowing air flow W is variable, the discharge wind ff1Q of the fan 3 and the blowing wind speed Vo at the air outlet 5 are input as set values during heating operation, and the blowing air flow The temperature difference ΔT between the outlet air temperature TO and the intake air temperature Tr is increased or decreased so that the wind velocity vr landing on the floor of Correspondingly, the blowing blade 6
The blowing blade driving means 8 is used to increase or decrease the set angle α of
A control means 16 is attached for outputting a drive control command to the motor.

By configuring as described above, the difference between the blowing air temperature To and the suction air temperature Tr under the condition where the discharge air ff1Q of the fan 3 and the blowing wind speed VO at the air outlet 5 are set during heating operation. By increasing/decreasing the setting angle α of the blowing vane 6 in accordance with the increase/decrease in the temperature ΔT, the floor surface landing wind velocity V[ of the blowing air flow W is changed to the average indoor temperature difference Δ
In order to make L a desired value, it is controlled to a preset value.

In the invention of claim 2, as shown in the drawings in order to solve the above problem, the invention of claim 2! The air conditioner described above includes a wind speed variable means 17 for changing the blowing wind speed Vo at the air outlet 5.
At the same time, the control means 16 controls the blowing air so that the floor surface landing wind velocity V'' of the blowing air flow W becomes a preset value to make the indoor upper and lower average temperature difference Δt a desired value. A function is provided to output a drive control command to the wind speed variable means 17 in order to increase or decrease the blowout air speed Vo in response to an increase or decrease in the temperature difference ΔT between the temperature TO and the intake air temperature Tr.

By configuring as described above, the discharge air volume Q of the fan 3 and the blow-off wind speed V at the air outlet 5 during heating operation are realized.
o is set, the blowing air velocity vO is increased or decreased in accordance with the increase or decrease in the temperature difference ΔT between the blowing air temperature To and the suction air temperature Tr. The landing wind speed vr is controlled to a preset value in order to make the average temperature difference ΔT between the upper and lower parts of the room a desired value.

In the invention of claim 3, the above-mentioned problem is solved as shown in the drawings. Discharge wind ff1 of fan 3 during operation
Q is input as a set value, and the blowing air temperature To is set so that the wind speed Vf of the blowing air flow W reaching the floor surface becomes a preset value to make the indoor upper and lower average temperature difference Δt a desired value. At the same time, a drive control command is output to the wind speed variable means 17 to increase or decrease the blowout wind speed Vo in response to an increase or decrease in the temperature difference ΔT between the air temperature and the intake air temperature 'rr,
A control means 16 is provided for outputting a drive control command to the blow-off blade drive means 8 in order to increase or decrease the set angle α of the blow-off blade 6.

As +1 is achieved as described above, when the discharge air mQ of the fan 3 is set during heating operation, the temperature difference Δ'F between the outlet air temperature TO and the suction air temperature Tr increases or decreases. By correspondingly increasing or decreasing the blowing air velocity VO and increasing or decreasing the set angle α of the blowing vane 6, the floor surface landing wind velocity V' of the blowing air flow W can be changed to the average indoor temperature difference ΔL between the upper and lower sides. In order to make the desired value, the control is performed so that the set value is set in advance.

In the invention of claim 4, in order to solve the above problem, as shown in the drawings, in the air conditioner according to claim 1, a wind speed variable means 17 that does not change the blowing wind speed VO at the air outlet 5; Corresponds to the increase/decrease in the discharge air ff1Q of the fan 3 so that the wind speed Vf of the blown air flow W landing on the floor during operation becomes a preset value to make the average temperature difference ΔL between the upper and lower parts of the room a desired value. Then, at the same time, a drive control command is outputted to the wind speed variable means 17 to increase or decrease the blowing wind speed (■), and at the same time, the set angle α of the blowing blade 6 is changed.
A control means 16 is provided for outputting a drive control command to the blowing blade drive means 8 in order to increase or decrease the amount.

By configuring as above, during heating operation,
The blown air flow W is increased or decreased by increasing/decreasing the blown air speed Vo and increasing/decreasing the setting angle α of the blowing blades 6 in accordance with the increase/decrease in the discharge air volume Q of the fan 3.
The wind speed vr landing on the floor surface is controlled to a preset value that makes the average temperature difference Δt between the upper and lower parts of the room a desired value.

The wind speed variable means 17 in the air conditioner according to claim 2.3 or 4 is swingably provided at the air outlet 5 and acts to increase or decrease the air flow path of the air outlet 5. Consisting of a wind speed control plate 18 and a swinging means 19 that acts to swing the wind speed control board 18,
Alternatively, an inverter may be used to frequency control the rotation speed of the fan motor 12 of the fan 3.

(Effects of the Invention) According to the invention of claim 1, the suction air W is sucked in from the air suction port 4 of the air conditioner main body l which incorporates the air heat exchanger 2 and the fan 3. is made into conditioned air by the heat exchange action of the air heat exchanger 2, and then blown into the room from the air outlet 5 of the air conditioner main body 1,
The air outlet 5 is provided with a blowing blade 6 whose angle is variable by a blowing blade driving means 8, and the setting angle α of the blowing blade 6 is set.
In an air conditioner in which the blowing angle θ of the blowing air flow W is made variable by changing , outlet air flow W
The blowing air temperature T is set so that the wind speed vr landing on the floor surface becomes a preset value to make the indoor upper and lower average temperature difference ΔL a desired value.

A control means 16 is provided for outputting a drive control command to the blow-off vane driving means 8 to increase or decrease the setting angle α of the blow-off vane 6 in response to an increase or decrease in the temperature difference ΔT between the blow-off vane drive means 8 and the suction air temperature T. Therefore, under the condition that the discharge air volume Q of the fan 3 and the blow-off air velocity vO at the air outlet 5 are set during heating operation, the blow-out air temperature To and the suction air temperature T
By increasing/decreasing the setting angle α of the blowing vane 6 in accordance with the increase/decrease in the temperature difference ΔT with respect to r, the floor surface landing wind velocity Vf of the blowing air flow W can be predicted so that the indoor vertical average temperature difference Δt becomes a desired value. The control is performed so that the set value is set in advance, and there is an excellent effect that the indoor temperature distribution during the heating operation can be maintained in an extremely favorable state.

According to the invention of claim 2, in the air conditioner according to claim 1, a wind speed variable means 17 for changing the blowout wind speed Vo at the air outlet 5 is attached, and the control means 16 is configured to control the blowout air speed Vo. The difference in temperature ΔT between the outlet air temperature To and the suction air temperature Tr is increased or decreased so that the floor surface landing wind speed vr of the flow W becomes a preset value that makes the indoor upper and lower average temperature difference ΔL a desired value. The blowing wind speed VO corresponds to
Since a function is provided to output a drive control command to the wind speed variable means 17 in order to increase or decrease the air flow rate, the discharge air volume Q of the fan 3 and the blow-out wind speed Vo at the air outlet 5 during heating operation are set. At Norato, the blowing air temperature is 1'
By increasing or decreasing the blowing air speed Vo in response to an increase or decrease in the temperature difference Δ'1 between o and the suction air temperature Tr,
The floor surface landing wind velocity vrh of the blown air flow W is controlled to be a preset value to make the average temperature difference Δt between the upper and lower parts of the room to the desired value, and the indoor temperature distribution during heating operation is extremely controlled. It has the excellent effect of being able to be maintained in good condition.

According to the invention of claim 3, in the air conditioner according to claim 1, the wind speed variable means 17 that does not change the blowout wind speed Vo at the air outlet 5 and the discharge wind ff1Q of the fan 3 during heating operation are set. When input as a value, the blowing air is adjusted so that the wind velocity vr of the blowing air flow W landing on the floor becomes a preset value to make the indoor average temperature difference ΔL a desired value. At the same time, a drive control command is outputted to the wind speed variable means 17 to increase or decrease the blowout air speed Vo in response to an increase or decrease in the temperature difference ΔT between the temperature To and the suction air temperature Tr. Since a control means 16 is attached to output a drive control command to the blow-off vane drive means 8 in order to increase or decrease α, the blow-off blade can be The blowing air flow W is increased or decreased by increasing or decreasing the blowing air velocity Vo described in 67j in accordance with the increase or decrease in the temperature difference Δ'F between the air temperature TO and the suction air temperature Tr, and by increasing or decreasing the set angle α of the blowing vane 6. Wind speed V when landing on the floor of
is controlled so that it becomes a preset value in order to make the indoor upper and lower average temperature difference Δt a desired value,
This has the excellent effect of keeping the indoor temperature distribution in an extremely good condition during heating operation.

According to the invention of claim 4, in the air conditioner according to claim 1, the air blowing speed VO at the n1 air outlet 5 is
The wind speed variable means 17 that should not change the wind speed Vf of the blown air flow W at the floor surface during the heating operation is set to a preset value to make the indoor upper and lower average temperature difference ΔL a desired value. Corresponding to the increase/decrease in the discharge air ff1Q of the fan 3, a drive control command is output to the wind speed variable means 17 to increase/decrease the blowing wind speed Vo, and at the same time, the setting ff4 degrees α of the blowing blade 6 is increased/decreased. Since a control means 16 for outputting a drive control command to the blow-off vane drive means 8 is attached, the blow-out air velocity Vo can be increased or decreased in response to an increase or decrease in the discharge air ff1Q of the fan 3 during heating operation. At the same time, by increasing/decreasing the setting angle α of the blowing vane 6, the floor surface landing wind speed vr of the blowing air flow W can be set to a preset value to make the indoor vertical average temperature difference Δt a desired value. This has the excellent effect of keeping the indoor temperature distribution in an extremely good condition during heating operation.

In addition, as described in claim 5 or 6, the wind speed variable means 17 in the air conditioner according to claim 23 or 4,
A wind speed control plate 18 that is swingably provided at the air outlet 5 and acts to increase or decrease the air flow path of the air outlet 5; and a swinging means 19 that acts to swing the wind speed control plate l8. Alternatively, if the fan motor 12 of the fan 3 is configured with an inverter that frequency-controls the rotation speed, the specific structure for controlling the wind speed can be simplified, and the wind speed can be controlled reliably. The advantage is that it can be done easily.

(Embodiments) Hereinafter, some preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Embodiment 1 FIG. 1 shows a schematic configuration of an air conditioner according to Embodiment 1 of the present invention, and the air conditioner is installed near the ceiling C in one corner of the room R, as shown in FIG. It is installed at a high place.

This air conditioner consists of an air conditioner main body 1 which includes an air heat exchanger 2 and a centrifugal fan 3.
The air conditioner main body I is provided with an air inlet 4 and an air outlet 5 formed at the rear and front surfaces of the lower surface. and,
In this air conditioner, suction air W is sucked in from the air suction port 4. After the air is converted into conditioned air by the heat exchange action of the air heat exchanger 2, it is blown into the room from the air outlet 5.

Further, the air outlet 5 is swingably provided with a blowing blade 6 for varying the blowing angle θ (see FIG. 11) of the blowing air flow W (in other words, conditioned air). . The blowing blade 6 is swingably supported on both side walls of the air blowing outlet 5 via a pivot shaft 7.7 serving as a center of swing, and is connected to a blowing blade drive provided on the side of the air conditioner main body i. The angle is made variable by means 8. As shown in FIG. 2, the blowing blade driving means 8 uses a step motor 9 as a driving source, and connects the rotating shaft 9a of the stepping motor 9 and one end (i.e., the inner end portion) of the blowing blade 6 with two wires. are connected via links 10 and 11. In other words, the first link 10 rotates as the step motor 9 rotates.
The rotational motion of the blower blade 6 is transmitted through the second link 11 as a reciprocating swing motion of the blower blade 6. Then, depending on the amount of rotation of the step motor 9 (in other words, the time period during which the step motor 9 is energized),
The setting angle α is determined.

The fan 3 is driven by a fan motor I2, and the rotation speed of the fan motor I2 is controlled so that the air volume can be switched between three types: "strong J", "U medium J", and "weak" by changing the taps of the motor coil. It has become.

Further, the air suction port 4 is provided with suction air W.

A suction temperature sensor 13 is attached to detect the temperature Tr of the air flow W, while a temperature T of the air flow W is attached to the air outlet 5.
A blowout temperature sensor I4 that detects the blowout temperature sensor I4 and a wind speed sensor ■5 that detects the blowout wind speed Vo of the blowout air flow W are attached.

Then, the blowing blade setting angle signal from the step motor 9 that determines the blowing angle θ of the blowing air flow W, and the air volume discharged from the fan 3. a switching tap position signal of the fan motor 12 that determines the switching tap position signal of the fan motor 12;
3. The detection data signals from the blowout temperature sensor 14 and the wind speed sensor I5 are input to a control means 16 consisting of a microcomputer, and in the case of this embodiment, the air volume Q( In other words, the switching tap position signal from the fan motor 12) and the blowout wind speed Vo at the air outlet 5 are input as set values during FAR operation.

The control means 16 is configured in advance to adjust the wind speed vr of the blown air flow W landing on the floor so that the indoor vertical average temperature difference Δt is a desired value (in the case of this embodiment, 5° C.) based on the various data described above. The set value V".(In the case of this example, 1m/
s), the blowing air temperature To and the suction air temperature T
A drive control command is output to the blow-off vane drive means 8 (specifically, the step motor 9) to increase or decrease the setting angle α of the blow-off vane 6 in response to an increase or decrease in the temperature difference ΔT with respect to r. act.

Next, with reference to the characteristic diagram shown in FIG. 3, the blowout air flow control during heating operation of the air conditioner of this embodiment will be explained.

FIG. 3 shows the floor surface landing wind speed Vl setting (direct vro (-1 m/
s), wind ff1Q, blowout angle θ, blowout wind speed V
A characteristic diagram obtained by simulation of the relationship between O and the temperature difference ΔT (=To−Tr) shows that h<t. According to the characteristic diagram, for example, in the case of heating operation with air volume Q = 18 m3/min, temperature difference ΔT = 20°C, and blowing angle θ-50°, if the blowing air velocity Vo force is <4 m/s, the air will land on the floor. The wind speed vr becomes the set value V fo (=1 m/s). In other words, the air conditioner in this case (in Figure 3, it will be operated in the four-point state indicated by A , , At , A , , A 4). The ceiling height is set at 2.7m).

In addition, in the case of the above characteristic diagram, if the indoor average vertical temperature difference Δt changes, the slope of the line in the above characteristic diagram changes. Of course, things will change as well.

Now, in Figure 3, point A3. At, As
, A 4 condition (i.e., air volume Q = 18 m'
/min, temperature difference ΔT-20℃, blowing angle θ=50°,
When the air conditioner of this embodiment is operated at a blow-off wind speed Vo = 4 m/s), the temperature difference ΔT increases from 20°C to 30°C due to a decrease in outside air temperature or an increase in indoor load.
When the temperature increases to .degree. C., the control means 16 performs the following control.

The wind ff1Q (in other words, the switching tap position of the fan motor 12) and the blowout wind speed VO are set as set values by the control means 1.
6, an increase in the blowout angle θ is required in response to an increase in the temperature difference ΔT. That is,
According to FIG. 3, the points A + , BI, B ! ,
Condition shown in A4 (i.e. wind mQ = 18m3/
min, temperature difference ΔT=30°C, blowout angle θ-60°, blowout wind speed Vo=4m/s), the floor surface landing wind speed vr of the blowout air flow W is set to the set value vro.
(1 m/s). Therefore, the control means 16 controls the blow-off vane drive means 8 (specifically, the step motor 9 ) is output a drive control command. The drive control command is to be output as a command to control the energization time to the step motor 9. Note that due to an increase in outside temperature or a decrease in indoor load, the temperature difference ΔTh<
If it decreases (from 20 degrees Celsius to 10 degrees Celsius), the control means 16 outputs a drive control command to decrease the set angle α of the blowing blades 6 (from 50 degrees to 40 degrees), and the air conditioner , C, , C2, and A4.

As described above, according to this embodiment, when the discharge air ff1Q of the fan 3 and the blow-off wind speed Vo at the air outlet 5 are set during heating operation, the blow-off air temperature To
By increasing/decreasing the setting angle α of the blowing vane 6 in response to the increase/decrease in the temperature difference Δ′r between Setting value V set in advance to make ΔL a desired value
It will be controlled so that fo (-1 m/s).

Embodiment 2 FIG. 4 shows a schematic configuration of an air conditioner according to Embodiment 2 of the present invention.

In the air conditioner of this embodiment, the air outlet 5 is provided with a wind speed variable means 17 for changing the blowout wind speed Vo. The wind speed variable means 17 includes a wind speed control plate 18 that is swingably provided at the upper end of the air outlet 5 and acts to increase the air flow path area of the air outlet 5; 18. The wind speed control plate I8 is pivotally supported on the upper ends of both side walls of the air outlet 5 via a support shaft 20.20 serving as a pivot center, and is provided on the side of the air conditioner main body i. The angle is made variable by the swinging means 19. As shown in FIG. 5, the swinging means 19 uses a step motor 21 as a driving source.
The rotating shaft 21a of the wind speed control plate 18 is connected to one end (i.e., the outer end) of the wind speed control plate 18 via two links 22 and 23. In other words, the rotational motion of the first link 22, which rotates with the rotation of the step motor 21, is transmitted through the second link 23 as a reciprocating motion of the wind speed control plate 18. Then, the wind speed control plate 1
8 set angle β (that is, the angle of inclination from the horizontal) is determined.

Further, in this embodiment, the control means 16 is provided with a set value vro (in this embodiment), which is set in advance so that the wind velocity vr of the blown air flow W landing on the floor surface makes the average temperature difference ΔT between the upper and lower parts of the room a desired value. 1 m/s) in order to increase or decrease the outlet air speed VO in response to an increase or decrease in the temperature difference Δ'r between the outlet air temperature TO and the suction air temperature Tr. A function to output drive control commands is provided.

The rest of the configuration is the same as that of the first embodiment, so the explanation will be omitted to avoid duplication.

Next, with reference to the characteristic diagram shown in FIG. 6, the blowout airflow control during heating operation of the air conditioner of this embodiment will be described.

The characteristic diagram shown in FIG. 6 was obtained in the same manner as that shown in FIG. 3 in Example 1.

Now, in Figure 6, the points A + , A 2 , A
z, A < condition (i.e., wind mQ = 18 m
″/min, temperature difference ΔT-20℃, blowing angle 0=50°
, when the air conditioner of this embodiment is operated at a blow-off wind speed Vo=4 m/s), the temperature difference ΔT increases from 20°C to 30°C due to a decrease in outside temperature or an increase in indoor load. In this case, the control means 16 performs the following control.

The wind fftw (in other words, the switching tap position of the fan motor 12) and the blowout chromaticity θ are set as set values by the control means 16.
Since this is done manually, the blowing air velocity VO is required to increase in response to an increase in the temperature difference ΔT. That is,
According to FIG. 6, the conditions indicated by points AB, , B, , B3 (i.e., wind ffi Q = 18 m'/min, temperature difference ΔT
=30°C, blowout angle θ-50°, blowout wind speed Vo=5
By operating the air conditioner at a speed of
1 m/s). Therefore, from the control means 16, in order to set the blowing wind speed VO to 5 m/s,
The swinging means 19 (specifically, the step motor 2
A drive control command is output for 1). The drive control command is to be output as a command to control the energization time to the step motor 21, and is to be outputted as a command to control the energization time to the step motor 21.
When the detected wind speed reaches the target value (=5 m/s), power supply to the step motor 21 is stopped. In addition, if T decreases to the above-mentioned temperature difference (from 20 degrees Celsius to 10 degrees Celsius) due to an increase in outside temperature or a decrease in indoor load, the setting angle β of the wind speed control plate 18 is decreased in the opposite direction to the above. A drive control command to reduce the wind speed VO (from 4 m/s to 3 m/s) is output from the control means 16, and the air conditioner is operated at point A.
1. It will be operated in the states shown by C1, Ct, and C3.

As described above, according to this embodiment, under the condition that the blowing air faQ of the fan 3 and the blowing angle θ of the blowing air flow W are set during heating operation, the blowing air temperature TO and the suction air temperature Tr are By increasing/decreasing the blowout wind speed Vo in accordance with the increase/decrease in the temperature difference Δ'F, the floor surface landing wind speed vr of the blowout air flow W is set in advance so as to make the indoor upper and lower average temperature difference Δt a desired value. It will be controlled to reach the set value V fo (-1 m/s).

In addition, when the air conditioner is in heating operation, the air volume switching tap of the fan motor 12 of the fan 3 changes from "strong" to "
When switched to "low", the wind f discharged from the fan 3
The wind velocity VO of f1Q and the blown air flow W is reduced, and the temperature difference ΔT is also increased as the blown air temperature TO rises due to the reduction in air volume. For example, the wind ff1Q is 18m3/'min to 13.5m'
/min, and the blowing wind speed vO decreased from 4m/S to 3m
/s, and the temperature difference Δ'F increases from 20°C to 25°C. In other words, since the air volume Q, the blowing air velocity Vo, and the temperature difference ΔT all indicate a direction that worsens the indoor temperature distribution, the control means 16 performs the following blowing air flow control.

That is, point A4 in FIG. A t , A 3
, the state shown in A4 (i.e., air volume Q = 18 m3
/ min, temperature difference ΔT = 20°C, blowing angle 0-50°,
In an air conditioner that is operated for heating at a blowout air velocity Vo = 4 m/s), when the air volume switching tap of the fan motor 12 of the fan 3 is switched from "strong" to "weak", the air volume Q becomes 18 m/s, as described above. '/min to 13.5m''/
+nin, and the blowing wind speed Vo decreased from 4 m/s to 3 m/s.
The temperature difference ΔT increases from 20°C to 25°C.

Therefore, the floor surface landing wind speed vr of the blown air flow W is set to the set value vL
(-1 m/s) by adjusting only the blowout angle θ, the air conditioner would be operated in the state shown at points B, Bt, Bz, and B- in Fig. 7. However, due to the structure of the air outlet 5 and the blowing blade 6, it is difficult to change the setting angle of the blowing blade 6 to the blowing angle θ of the blowing air flow W to be represented by eight points. It is necessary to deal with this by adjusting the blowout angle θ and the blowout wind speed Vo. In other words, when the blowout angle θ is set to 70°, the control means 16 needs to control the blowout wind speed Vo to 3.6 m/s. In this case, the air conditioner is located at point B I in FIG.
It will be operated under the conditions shown by B t , C+ and C2. The specific control of the blowing blades 6 and the wind speed variable means 17 by the control means 16 at this time is as follows:
Since this is carried out in the same manner as described above, the explanation will be omitted.

In the above case, if the blowout angle O is to be made smaller than 70'', it is necessary to relatively significantly increase the blowout wind speed Vo from point B4. Since there is a limit, it is desirable to set the blowing angle θ to 70°, which is the maximum allowable range.

Embodiment 3 FIG. 8 shows a schematic configuration of an air network equalizer according to Embodiment 3 of the present invention.

In the air conditioner of this embodiment, the wind speed variable means 17 that does not change the blowout wind speed VO is constituted by an inverter that frequency-controls the rotation speed of the fan motor 12 of the fan 3.

The rest of the configuration is the same as that of the second embodiment, so the explanation will be omitted to avoid duplication.

Next, with reference to the characteristic diagram shown in FIG. 9, the blowout air flow control during heating operation of the air conditioner of this embodiment will be explained.

The characteristic diagram shown in FIG. 9 was obtained in the same manner as that shown in FIG. 3 in Example 1.

Now, in Fig. 9, the points A + , A t , A
3, the state shown in A4 @ (i.e., wind ffi Q =
18m'/glin, temperature difference ΔT=20℃, blowing angle θ
When the air conditioner of this embodiment is operated at a temperature of −50° and an outlet wind speed Vo of 4 m/s, the temperature difference ΔT changes from 20°C to 2°C due to a decrease in outside air temperature or an increase in indoor load.
When the temperature increases to 5° C. (that is, when the temperature difference change is small), the control means 16 performs the following control.

The wind ff1Q (in other words, the switching tap position of the fan motor 12) and the blowout angle θ are controlled by the control means 16 as set values.
Since this is done manually, the blowing wind speed Vo is required to increase in response to an increase in the temperature difference ΔT. That is,
According to FIG. 9, point A+.

Conditions indicated by B + , B 2 , B 3 (i.e., wind f
f1Q = 18m3/m1n1 temperature difference ΔT = 25℃,
Blowout angle θ = 50°, blowout wind speed Vo = 4.5m/
By operating the air conditioner at step s), the floor surface landing wind speed vr of the blown air flow W is set to the set value V to (-1 m/s
). Therefore, the control means 16 issues a drive control command (in other words, frequency increase control) to the inverter 17 in order to set the blowing wind speed Vo to 4.5 m/s. The frequency increase control based on the drive control command ends when the wind speed detected by the wind speed sensor 15 reaches the target value (=4.5 m/s), but in reality, the frequency increase control by the inverter 17 controls the frequency of the fan motor I2. , 77-3 slightly increases, and the temperature difference ΔT is also slightly revised downward due to the decrease in the blown air temperature TO. Therefore, the temperature difference Δ′T becomes at point A,
-B1, the blowing wind speed VO is finally balanced between points A4B5. On the other hand, when the temperature difference ΔT decreases (from 20°C to 15°C) due to an increase in outside air temperature or a decrease in indoor load, the inverter 17
The blowout wind speed Vo is reduced by frequency reduction control (4 m
/s → 3.5m/s) is output from the control means 16, and the air conditioner moves to points A, C, C.
2. It will be operated under the conditions indicated by CI.

Note that even in this case, in reality, the inverter 17
Due to the frequency reduction control of the fan motor 12, the discharge air and IQ of the fan 3 are slightly reduced, and the blown air temperature To rises, and the temperature difference ΔT is also slightly revised upward, so the temperature difference ΔT becomes a point. C, -A.

In between, the blowing wind speed Vo will finally be balanced between points C3A4.

As described above, according to this embodiment, under the condition that the blowing air ff1Q of the fan 3 and the blowing angle θ of the blowing air flow W are set during heating operation, the blowing air temperature To and the suction air temperature Tr are set. By increasing/decreasing the blowing air velocity VO in accordance with the increase/decrease in the temperature difference ΔT of v ro(=l m/s
).

Further, during the heating operation of the air conditioner of this embodiment, if there is a large change in the outside air temperature or the indoor load, the blowout air flow control is performed as shown in FIG.

For example, in FIG. 10, the points A + , A t ,
A s , the state indicated by A 4 (i.e., wind m Q =
18 m3/min, temperature difference Δ'F = 20° C1, blowing angle θ - 50°, blowing air velocity Vo = 4 m/s), when the air conditioner of this example was operated, the outside air temperature decreased. Alternatively, when the temperature difference ΔT increases from 20° C. to 30° C. due to an increase in the indoor load (that is, when the temperature difference change is large), the control means 16 performs the following control.

In this case, an increase in the blowout angle θ and an increase in the blowout wind speed Vo are required in response to an increase in the temperature difference ΔT. That is, according to FIG. 10, points A, , I3+ , B t
, B 3 (i.e., the wind ffft Q = 1
8m3/min, temperature difference ΔT-30℃, blowing angle θ=5
By operating the air conditioner at an air flow rate of 5° and an air flow velocity of o = 4.5 m/s, the wind velocity vr of the air flow W landing on the floor is
can be maintained at the set value Vf, (-1 m/s). Therefore, the control means 16 sets the blowout angle θ to 55°.
At the same time, a drive control command is output to the blow-off vane driving means 8 and the inverter 17 in order to make the blow-off wind speed Vo 4.5 m/s. Note that the drive control of the blow-off vane drive means 8 and the inverter 17 by the control means 16 is as already explained, so the explanation will be omitted to avoid duplication. At this time, in reality, due to the frequency control of the fan motor 12 by the inverter 17, the discharge air fiQ of the fan 3 increases, the blown air temperature To decreases, and the differential temperature T is also revised downward. ,
The temperature difference ΔT is between point 2-B1 and from point B1 to point C3.
Therefore, the blowing wind speed Vo is between points Δ4-B3 and is finally balanced at point C4 from point B3, and the air conditioner is at point A7 in FIG. 1O. C1, C2, C3
It will be operated under the conditions shown in . On the other hand, due to an increase in outside temperature or a decrease in indoor load, the temperature difference Δ'F
decreases (from 20°C to 10°C), the blowing angle θ is decreased by controlling the blowing angle θ to decrease and controlling the frequency by the inverter 17, contrary to the above, and the blowing wind speed is reduced to 0.
The control means 16 may output a drive control command to reduce the .

In the above embodiment, the rotation speed of the fan motor is controlled by an inverter, but the rotation speed of the fan motor may be controlled using phase control or other control means.

It goes without saying that the present invention is not limited to the configurations of the above-mentioned embodiments, and that the design can be changed as appropriate without departing from the gist of the invention.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a schematic structure of an air conditioner according to Embodiment 1 of the present invention, FIG. 2 is a partial perspective view showing a blowing blade drive means in the air conditioner shown in FIG. 1, and FIG. The figure is an example using a characteristic diagram obtained by simulation of the relationship between the wind ff1Q of the outlet airflow, the outlet angle θ of the outlet airflow, the outlet air speed Vo of the outlet airflow, and the temperature difference between the intake air temperature and the outlet air temperature. FIG. 4 is a cross-sectional view showing a schematic structure of an air conditioner according to Embodiment 2 of the present invention, and FIG. 6 is a diagram corresponding to FIG. 3 for explaining the control of the air conditioner shown in FIG. 4, and FIG. 7 is a partial perspective view of the air conditioner shown in FIG. FIG. 8 is a sectional view schematically showing an air conditioner according to Embodiment 3 of the present invention, and FIG. 9 is a diagram corresponding to the air conditioner shown in FIG. FIG. 3 is a diagram corresponding to the control when the temperature difference change in the conditioner is small, and FIG. 10 is a diagram corresponding to FIG. FIG. 11 is a schematic diagram showing a flow cross section of an airflow blown from an air conditioner installed at a high place near the ceiling. ■・・・・・・Air conditioner body 2・・・・Air heat exchanger 3・・・・Fan 4・・・・Air suction port 5・・・・・... Air outlet 6 ... Blow-off vane 8 ... Blow-off vane drive means 12 ... Fan motor 16 ... Control means 17 ...・・Wind speed variable means 18 ・・・Wind speed control plate 19 ・・・ Swing means Q ・・ θ ・ ・ Vo ・ Vf ・ Δ′r ・ Tr ・ TO ・ ΔL ・ α pot ・ 1st Figure Wind m Outlet angle Outlet wind speed Floor landing wind speed difference Temperature Suction air temperature Outlet air temperature Indoor top and bottom average temperature difference Outlet vane setting angle Figure 2

Claims (6)

[Claims] 1. The air (W_0) sucked in from the air suction port (4) of the air conditioner main body (1), which has a built-in air heat exchanger (2) and fan (3), is transferred to the heat of the air heat exchanger (2). After the air is conditioned by the exchange action, it is blown into the room from the air outlet (5) of the air conditioner main body (1), and the air is blown into the room by the air blower drive means (8) at the air outlet (5). In an air conditioner in which a blow-off vane (6) whose angle is variable is provided, and the blow-off angle (θ) of the blow-off air flow (W) is made variable by changing the setting angle (α) of the blow-off vane (6). , Fan during heating operation (3)
The discharge air volume (Q) and the blow-out wind speed (V_0) at the air outlet (5) are input as set values, and the floor surface landing wind speed (Vf) of the blow-out air flow (W) is calculated based on the indoor vertical average temperature difference. In order to make (Δt) a desired value, the blowout air is adjusted to correspond to the increase or decrease in the temperature difference (ΔT) between the blowout air temperature (T_0) and the suction air temperature (Tr). An air conditioner characterized in that an air conditioner is provided with a control means (16) for outputting a drive control command to the blow-off vane drive means (8) in order to increase or decrease a set angle (α) of the blade (6). 2. The air (W_0) sucked in from the air suction port (4) of the air conditioner main body (1), which has a built-in air heat exchanger (2) and fan (3), is transferred to the heat of the air heat exchanger (2). After the air is conditioned by the exchange action, it is blown into the room from the air outlet (5) of the air conditioner main body (1), and the air is blown into the room by the air blower drive means (8) at the air outlet (5). In an air conditioner in which a blow-off vane (6) whose angle is variable is provided, and the blow-off angle (θ) of the blow-off air flow (W) is made variable by changing the setting angle (α) of the blow-off vane (6). , a wind speed variable means (17) for changing the blowing wind speed (V_0) at the air outlet (5), and a blowing angle of the blowing air volume (Q) and blowing air flow (W) of the fan (3) during heating operation. (θ) is input as a set value, and the wind velocity (Vf) of the blown air flow (W) landing on the floor is set to a preset value to make the average indoor temperature difference (Δt) between the top and bottom of the room a desired value. The temperature difference (ΔT) between the outlet air temperature (T_0) and the suction air temperature (Tr) is
An air conditioner characterized in that the air conditioner is further equipped with a control means (16) for outputting a drive control command to the wind speed variable means (17) in order to increase or decrease the blowing wind speed (V_0) in accordance with an increase or decrease in the air flow rate. 3. The air (W_0) sucked in from the air suction port (4) of the air conditioner main body (1), which has a built-in air heat exchanger (2) and fan (3), is transferred to the heat of the air heat exchanger (2). After the air is conditioned by the exchange action, it is blown into the room from the air outlet (5) of the air conditioner main body (1), and the air is blown into the room by the air blower drive means (8) at the air outlet (5). In an air conditioner in which a blow-off vane (6) whose angle is variable is provided, and the blow-off angle (θ) of the blow-off air flow (W) is made variable by changing the setting angle (α) of the blow-off vane (6). , a wind speed variable means (17) for changing the blowout wind speed (V_0) at the air outlet (5), and the blowout air volume (Q) of the fan (3) during heating operation are input as set values, and the blowout The blowing air temperature (T_0) and the intake air are adjusted so that the wind velocity (Vf) of the airflow (W) landing on the floor becomes a preset value that makes the average indoor temperature difference (Δt) at the desired value. The blowing wind speed (V_
0) to the wind speed variable means (17); control means (16) for outputting drive control commands;
). 4. The air (W_0) sucked in from the air suction port (4) of the air conditioner main body (1), which has a built-in air heat exchanger (2) and fan (3), is transferred to the heat of the air heat exchanger (2). After the air is conditioned by the exchange action, it is blown into the room from the air outlet (5) of the air conditioner main body (1), and the air is blown into the room by the air blower drive means (8) at the air outlet (5). In an air conditioner in which a blow-off vane (6) whose angle is variable is provided, and the blow-off angle (θ) of the blow-off air flow (W) is made variable by changing the setting angle (α) of the blow-off vane (6). , a wind speed variable means (17) for changing the blowing wind speed (V_0) at the air outlet (5), and a wind speed (Vf) at which the blowing air flow (W) lands on the floor during heating operation is determined by the average temperature difference between the upper and lower indoor temperatures. In order to make (Δt) a desired value, the blowing air velocity (V_0) is increased or decreased in response to an increase or decrease in the blowing air volume (Q) of the fan (3). The wind speed variable means (17)
a control means (16) for outputting a drive control command to the blow-off vane driving means (8) to increase or decrease a set angle (α) of the blow-off vane (6); An air conditioner characterized by being equipped with. 5. The wind speed variable means (17) is connected to the air outlet (5).
a wind speed control plate (18) which is swingably provided at the air outlet (5) and acts to increase or decrease the air flow path of the air outlet (5); and a swinging means which acts to swing the wind speed control plate (18). (
19) Said claim 2 characterized in that it consists of
, 3 or 4. 6. 5. The air conditioner according to claim 2, wherein the wind speed variable means (17) is an inverter that frequency controls the rotation speed of the fan motor (12) of the fan (3).