JPH04356653A - Air conditioner - Google Patents

Abstract

PURPOSE:To improve a temperature difference in a vertical direction in a room and further to improve a comfortable characteristic in an air conditioner having two blowers. CONSTITUTION:Two independent first and second aeration passages 6 and 7 are formed in a main body of an air conditioner. Each of the aeration passages 6 and 7 is provided with the first and second cross-flow fans 8, 9 and at the same time a relative temperature difference is formed in air flows flowing in the first and second aeration passages 6 and 7, a low temperature air and high temperature air are relatively related to each other in view of their blowing forms and controlled, thereby a uniform distribution of temperature can be effectively realized in response to the operating state.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a temperature difference adjustment function for reducing the temperature difference between the upper and lower parts of indoor air.

0002

BACKGROUND OF THE INVENTION Recent air conditioners for heating and cooling are required to go beyond simple heating and cooling functions to function as devices for creating a comfortable indoor environment.

[0003] When considering the configuration of conventional general air conditioners against this background, for example, problems such as the air temperature in the upper part of the room becoming high and lack of warmth at the feet, and hot air directly blowing into the head. There are several problems that need to be solved, such as the problem of unpleasant headaches.

[0004] Therefore, as one of the conventional means to solve various problems, as shown in Japanese Patent Publication No. 63-13096, for example, a floor-standing air conditioner has two heat exchangers for heating and cooling. For example, by installing a heat exchanger and two blowers corresponding to the heat exchangers in two stages, for example, upper and lower, the blower on the side of the heating heat exchanger is operated at high speed to achieve heating effect, while cooling By operating the blower on the side of the heat exchanger at low speed, the room temperature air is circulated, and the warm air for heating is eventually circulated throughout the room, thereby making the vertical distribution of indoor air uniform. Products have been proposed to relieve the feeling of headache.

[0005] Furthermore, as a second prior art having the same purpose, as shown in Japanese Patent Laid-Open No. 59-153040, two sets of first and second sets are used in a floor-standing air conditioner. A blower is installed, and first, the indoor air from the first blower is blown toward the ceiling of the room, while the warm air from the second blower is blown toward the floor of the room, and the air is blown toward the ceiling of the room. There is also a device that attempts to make the indoor temperature distribution uniform by suppressing the rise of hot air from the floor side using air blown from the side.

Furthermore, as a third conventional technique having the same purpose as the above, for example, as shown in Japanese Patent Laid-Open No. 178836/1983, a wall-mounted air conditioner has air outlets arranged in two stages, upper and lower. Two sets are provided adjacently, and the first air outlet on the upper side blows out room temperature air without passing through the heat exchanger, and the second air outlet on the lower side blows out warm air via the heat exchanger. , the upward floating of the hot air blown out from the lower second air outlet is suppressed by the room temperature air blown out from the upper first air outlet, thereby making the indoor temperature distribution uniform. Something like this is also being considered.

[0007]

[Problem to be solved by the invention] However, the above first to
In the air conditioner having the configuration of the third prior art, in either case, the blower for blowing out room temperature (low temperature) air on one side is dedicated to blowing out room temperature air, and two blowers are incorporated. However, the benefits are not being fully utilized.

[0008] Furthermore, the heating characteristics actually required by indoor occupants are not unambiguous, such as simply having a uniform temperature distribution, as described above, but are essentially fuzzy characteristics that vary according to changes in the indoor environment. It is something. For example, when starting heating in a cold state, it is necessary to blow a large amount of high-temperature hot air downward into the room to quickly warm the room. In order to reduce the draft feeling caused by indoor occupants, it is necessary to keep the above-mentioned warm air blowout speed setting low.In addition, in this case, the convective buoyancy of the hot air causes the blowout air to float upwards and touch the feet of the occupants. Since there is a possibility that the temperature in the vicinity may become low, it is also necessary to blow out the cold air in the same direction as the hot air as described above to suppress the floating of the hot air.

In other words, in order to obtain truly comfortable heating characteristics that match the indoor environment, it is necessary to vary the blowing direction, wind speed, and air volume of hot and cold air with high precision according to the requirements of each operating state. Become.

0010

[Means for Solving the Problems] The inventions recited in claims 1 to 4 of the present application have been made for the purpose of solving the conventional problems as described above, and are each constructed as follows. has been done.

(1) Structure of the invention according to claim 1 The air conditioner according to the invention according to claim 1 is equipped with a first blower fan 8 and a heat exchanger 5 as shown in FIGS. A first ventilation path 6 for passing air at a predetermined temperature, and a second ventilation fan 9 are provided, and air through the heat exchanger 5 and air not through the heat exchanger 5 are introduced into the first ventilation path. A second ventilation passage 7 through which air having a predetermined temperature difference with respect to the air passing through the passage 6 passes; and an air flow blown out through the second ventilation passage 7 is connected to the first ventilation passage 6 at the air blowing position. The air outlet 30 is formed to be located above the air flow blown out through the air outlet 30.

(2) Structure of the invention according to claim 2 The air conditioner according to the invention according to claim 2 has the structure of the air conditioner according to the invention according to claim 1, as shown in FIGS. 1 to 7, for example. The basic configuration is such that the air inlet portion of the second ventilation passage 7 in the basic configuration has a temperature such that the temperature of the air passing through the second ventilation passage 7 is equal to that of the air passing through the first ventilation passage 6 during steady operation. The opening amount of the heat exchanger side air inlets 4a, 4A and the external air inlets 4c, 4B are adjusted so that the temperature is relatively lower than that of the heat exchanger side air inlets 4a, 4A.
This feature is characterized in that the opening amount is set.

(3) Configuration of the invention according to claim 3 The air conditioner according to the invention according to claim 3 has the configuration of the air conditioner according to the invention according to claim 1, as shown in FIGS. 1 to 29, for example. is the basic configuration, and the second ventilation passage 7 in the basic configuration
The air inlet portions 4c and 4B are configured such that the temperature of the air passing through the second ventilation passage 7 is relatively lower than the temperature of the air passing through the first ventilation passage 6 during steady operation. It is characterized by being provided with air introduction ratio adjusting means 11, 11A for arbitrarily and variably adjusting the ratio between the amount of air introduced through the heat exchanger 5 and the amount of external air introduced that does not pass through the heat exchanger 5. be.

(4) Structure of the invention according to claim 4 The air conditioner according to the invention according to claim 4 has an air conditioner according to the invention according to claim 1 or 2 or 3, as shown in FIGS. 1 to 29, for example. The basic configuration is the configuration of a harmonizer, and the first blower fan 8 and the second blower fan 9 in the basic configuration are configured so that their rotational speeds can be controlled independently of each other. It is something.

[0015]

[Function] As a result of each of the inventions described in claims 1 to 4 of the present application being constructed as described above, each of the inventions has the following functions corresponding to each of the structures.

(1) Effect of the invention according to claim 1 In the configuration of the air conditioner according to the invention according to claim 1, as described above, the first blower fan 8 is provided, and the predetermined temperature is supplied through the heat exchanger 5. a first ventilation passage 6 through which air passes, and a second ventilation fan 9
A second ventilation system that introduces air that has passed through the heat exchanger 5 and air that does not go through the heat exchanger 5, and passes air that has a predetermined temperature difference with respect to the air that passes through the first ventilation path 6. Road 7 and
Since the air flow blown out through the second ventilation path 7 is formed to be located above the air flow blown out through the first ventilation path 6 at the air blowout position, for example, during heating operation. The floating air caused by the convection of the warm air blown out from the first ventilation duct 6 can be suppressed by the upper low temperature air blown out from the second ventilation duct 7, and the warm air is stably distributed in the lower part of the room. It becomes possible to stay in the state.

(2) Effect of the invention according to claim 2 In the air conditioner according to the invention according to claim 2, regarding the air inlet portion of the second ventilation passage 7 of the air conditioner according to the invention according to claim 1, , the air inlet 4 on the heat exchanger 5 side so that the temperature of the air passing through the second ventilation passage 7 is relatively lower than the temperature of the air passing through the first ventilation passage 6 during steady operation.
The opening amounts of the external air intake ports 4c and 4B are set, and the temperature of the air passing through the second ventilation path 7 can be adjusted by the room temperature air introduced from the outside based on the relationship between the opening amounts. It can be set freely within a predetermined range, and the temperature of the low-temperature air blown out through the second ventilation path 7 can be set to a desired temperature depending on the operating state.

(3) Effect of the invention according to claim 3 In the configuration of the air conditioner according to the invention according to claim 3, the temperature of the air passing through the second ventilation passage 7 is lower than the first temperature during steady operation.
The ratio between the amount of air introduced through the heat exchanger 5 and the amount of external air introduced that does not pass through the heat exchanger 5 is variably adjusted so that the temperature is relatively lower than the temperature of the air passing through the ventilation path 6. By arbitrarily controlling the air introduction ratio adjusting means 11, 11A, the temperature of the air passing through the second ventilation passage 7 can be adjusted to match the temperature of the air introduced from the outside. The temperature can be freely controlled within a predetermined range using the room temperature air, and the temperature of the low temperature air blown out through the second ventilation passage 7 can be set to a desired temperature depending on the operating state.

(4) Effect of the invention according to claim 4 In the configuration of the air conditioner according to the invention according to claim 4, the above-mentioned claim 1
As a result of the first blower fan 8 and the second blower fan 9 in the configuration of the air conditioner according to the described invention being configured to be able to control their rotation speeds independently of each other, the first and second blower fans described above are The velocity of the airflow blown out through each of the ventilation passages 6 and 7 can be freely controlled, and the distribution state of the airflow can be adjusted more finely.

[0020]

Therefore, according to the invention described in each of claims 1 to 4 of the present application, it is possible to make the temperature distribution state of indoor air uniform, and it is possible to realize a comfortable air conditioning state.

[0021]

【Example】

1. First Embodiment FIGS. 1 to 5 show the configuration and operation of a wall-mounted air conditioner according to a first embodiment of the present invention.

First, FIG. 1 shows the mechanical structure and control circuit of the main body of the air conditioner, and reference numeral 1 in the figure indicates an external casing of the main body of the air conditioner for wall-mounting. The external casing 1 is secured to a wall surface 2 with a predetermined space provided between the external casing 1 and the ceiling 3.

The outer casing 1 has a box-shaped cassette structure as a whole, and two sets of first and second main and sub-air suction grilles 4a and 4b are provided on the upper part of the outer casing 1, and at the center of the front surface thereof. A third air suction grill 4c is provided at the bottom, and two air outlets 1, a first and a second, are provided at the center of the lower surface.
Air outlet ports 30 each consisting of 4b and 14c are formed. On the other hand, the inside thereof is defined by a first ventilation passage 6 communicating from the first air outlet 14b to the first and second grilles 4a, 4b and a partition wall 10, and the second A second ventilation passage 7a communicating from the air outlet 14c to the third grille 4c is provided. First, in the first ventilation passage 6, a heat exchanger 5, a first cross flow fan 8, and a first wind direction changing plate 12 are sequentially arranged from the upstream side to the downstream side. Further, a second cross-flow fan 9 is disposed in the second ventilation passage 7, located approximately in the middle from the upstream side 7a to the downstream side 7b, and further includes a second air outlet on the downstream side. A second wind direction changing plate 13 is provided at a portion 14c, and its base end side is pivoted to the lower end 10b of the partition wall 10.

On the other hand, reference numeral 14a denotes a communication port through which the downstream side of the heat exchanger 5 of the upstream part 6a of the first ventilation passage 6 and the upstream part 7a of the second ventilation passage 7 communicate with each other. Mouth 1
4a is provided with a damper 11 for opening and closing the opening of the communication port 14a, which is pivoted to the heat exchanger 5 side and is rotatable in the direction of the arrow. The damper 11 is controlled to open and close depending on the direction and amount of rotation of a first motor M1 that is rotationally driven by a first motor drive circuit 20. In the illustrated state in which the tip of the damper 11 corresponds to the upper end 10a of the partition wall 10, the damper 11 closes the opening of the communication port 14a and connects the first and second ventilation passages 6.
, 7 as two sets of completely independent and parallel ventilation passages, for example, as shown in FIGS. The heated air and the room temperature air introduced from the third grill 4c without passing through the heat exchanger 5 are sent to the first and second air outlets via the first and second cross flow fans 8 and 9, respectively. The air is blown out independently from 14b and 14c.

[0025] Furthermore, the first and second wind direction changing plates 12,
13 also have second motors M2 and M2, respectively, similar to the damper 11 described above.
It is rotatably driven by a third motor M3, and is controlled to open and close according to the rotational direction and amount of rotation of each motor M2, M3 driven by the second and third motor drive circuits 21, 22.

Each of the first to third motors M1 to M3 is
The direction of rotation can be arbitrarily determined by the motor control circuit 19, respectively.
The amount of rotation is controlled, thereby changing the opening degrees of the damper 11 and the first and second wind direction changing plates 12 and 13.

On the other hand, the motor control circuit 19 is constituted by, for example, a microcomputer, and controls the first to second motor drive circuits 20 to 22 in accordance with the blowout mode set by the blowout mode setting circuit 18. Control. The blowout mode setting circuit 18 includes a wind speed sensor 1
7 and the temperature sensor 16 are inputted, and based on these detection values, calculations as shown in the flowchart of FIG. 2 are performed to set the blowout mode. It is designed to perform motor drive control.

Next, the contents of the first to third motor drive controls by the motor control circuit 19 will be explained in detail with reference to the flowchart of FIG.

That is, first, in step S1, the detected value V1 of the wind speed sensor 17 and the detected value V2 of the temperature sensor 16 are respectively read.

Next, in step S2, an actual wind speed value Sp is calculated from the detected value V1 of the wind speed sensor 17. Further, in step S3, the actual temperature Tp is calculated based on the detected value V2 of the temperature sensor 16.

Next, the process proceeds to steps S4 and S5, where the wind speed calculation value Sp and temperature calculation value Tp are set to predetermined set values S.
p1, Tp1, the deviation value ΔSp,
Find ΔTp.

Then, the process further advances to step S6, and based on the above-mentioned deviation values ΔSp, ΔTp, the deviation values ΔSp, ΔTp are determined.
The damper 11, the first and second dampers that make ΔTp zero
The respective opening degrees θ1, θ2, θ3 of the wind direction changing plates 12, 13 are read out from a predetermined control map, and the first to third motors M1
. supply the signal.

As a result, the air conditioner shown in FIGS.
As shown in Figure 2, the air blowing pattern is appropriately controlled according to the operating conditions, and the temperature in the room where the air conditioner is installed is set to the desired room temperature. Also, the airflow condition becomes better.

Now, for example, the damper 11, the first and second wind direction changing plates 12, and
The specific control method of No. 13 will be explained as shown in FIGS. 3 to 6, for example.

(1) In the first control mode (at the start of heating), that is, at the start of the heating operation, it is necessary to raise the room temperature as quickly as possible, so as shown in FIG. By controlling the grille 4c side opening to the minimum opening state θ1 = 0 degrees (fully closed state),
While the third grille 4c, which is the auxiliary air intake port, is completely closed, the first and second wind direction change plates 12 and 13 are controlled to open to the maximum opening degree θ2, θ3=MAX degree, and as much as possible. A large amount of air is sucked in from the first and second grilles 4a and 4b, which are the main air suction ports, and supplied to the heat exchanger 5, and the heated air after the heat exchange is passed through the first grille, which is the main air flow path. ventilation duct 6
The blowing force of both the first and second cross fans 8, 9 is fully utilized from the second ventilation passage, which is a sub-air flow passage, to the first and second air outlets 14b, 14c. Efficiently blows air into the room from both sides. Therefore, at this time, the above first
, the second wind direction changing plates 12 and 13 are both controlled to be in a state parallel to the airflow indicated by the arrows, and function simply as straightening plates.

As a result, efficient rapid heating becomes possible.

[0037] The actual temperature Tp of the indoor air at the start of the heating operation (when the heating switch is turned on) is, for example, Tp=5°C,
It is assumed that the wind speed Sp is Sp=0 m/s, the set wind speed Sp1 set during operation is Sp1=0.5 m/sec, and the desired set temperature T1 is T1=20°C.

(2) Second control mode (when the room temperature Tp reaches around the set value Tp=T1=20°C) Next, when the rapid heating operation in the state shown in FIG. Tp reaches the set temperature T1=20°C. When the temperature sensor 16 detects that the actual room temperature Tp has reached the set temperature T1=20°C (Tp=T1=20°C), the motor control circuit 19 determines this fact, Thereafter, as shown in FIG. 4, the damper 11 is controlled so that the third grill 4c side opening θ1 is the maximum opening θ outer casing = MAX degree, while the second ventilation passage 7 and the first The communication port 14a with the ventilation path 6 is closed to create a second air outlet 14 for heat exchange air on the main air flow path side.
Prevents inflow to the c side.

As a result, the third grill 4 on the side of the auxiliary air suction port
Air at room temperature without passing through the heat exchanger 5 is sucked in from c, and the second cross flow fan 9 transfers heat exchange air (warm air) from the second air outlet 14c to the first air outlet 14b side. ), and the room temperature air on the second outlet 14c side is blown out in a state where it is located on the upper side. As a result, the high-temperature side air is suppressed by the low-temperature side air, and floating does not occur. In this state, the set wind speed Sp=0.3
m/sec, and by controlling the set temperature Tp1 to about 18° C., it is possible to maintain substantially desired steady air conditioning conditions.

(3) Third control mode (adjustment mode) Now, for example, in the state shown in FIG. Assuming that the temperature is 20°C, the actual indoor temperature Tp = 20°C is the set temperature Tp = 18 in Figure 4 above.
Tp-Tp1=ΔTp=20-18=2(℃
), and the indoor wind speed Sp=0.5m/sec
is Sp-S for the set wind speed Sp1 = 0.3 m/sec
This means that there is a wind speed deviation (excessive) of p1=ΔP=0.5−0.3=0.2 (m/sec).

Therefore, in this case, for example, as shown in FIG. 5, the opening degree θ2 of the first wind direction changing plate 12 and the opening degree θ1 of the damper 11 are fixed as shown in FIG. 4, and the other By swinging the third wind direction changing plate 13, the low temperature air that does not pass through the heat exchanger 5 is transferred to the second wind direction changing plate 13.
The air from the second air outlet 14c on the room temperature side where the temperature is relatively low is blown out from the first air outlet 14b in a turbulent state. By effectively blowing into the wind, the degree of mixing of both airs is improved, and the room temperature is effectively lowered while making the temperature distribution uniform, and the above original set temperature Tp1=
We aim to converge to 18℃ and maintain the set wind speed.

(4) Fourth control mode (during cooling operation) Furthermore, the air conditioner is configured as shown in FIG. 6 during cooling operation, for example.
It is controlled as shown in .

That is, during the cooling operation, it is better to effectively send cold air to the upper layer of indoor air near the ceiling, so first, the damper 11 closes the third grille 4c on the side of the auxiliary air intake port (θ1= 0 degrees) and the above communication port 1
4a to a fully open state, the cold air cooled through the heat exchanger 5 is efficiently transferred to the first and second air outlets 14b and 1 by both the first and second cross fans 8 and 9.
At the same time, the wind direction changing plates 12 and 13 of each air outlet 14c are controlled to be close to horizontal as shown in the figure, so that the cool air blown out is horizontally spread to the upper part of the entire room as much as possible. Control so that it blows out. As a result, it is possible to realize an effective cooling state with a uniform temperature distribution.

2. Second Embodiment Next, FIGS. 7 and 8 show the configuration of an air conditioner according to a second embodiment of the present invention.

The configuration of the air conditioner according to the second embodiment is based on the configuration of the air conditioner according to the first embodiment, and the structure of the damper 11 in the same configuration is changed from a butterfly shape to a structure as shown in FIG. By changing it to a fan-shaped one having an air guide function, the opening degree of the communication port 14a between the second ventilation passage 7 and the first ventilation passage 6 and the opening degree of the third grille 4c can be controlled more precisely. At the same time, the first wind direction changing plate 12 on the first air outlet 14b side is installed on the rear edge surface of the first air outlet 14b, and the front edge surface of the second air outlet 14c. A third wind direction changing plate 16 is provided to adjust the blowing angle of the air blowing flow from the second air blowing outlet 14c side to approximately 0° to 90°.
This feature allows for wide control over a range of . Furthermore, since there are two wind direction changing plates 13 and 16 on the second air outlet 14c side, the opening area of the outlet itself can be made variable, and it is also possible to control the outlet air speed. This will bring about benefits. In addition, in FIG. 8, reference numeral 11a is an arc-shaped damper part, 11b is a main body part (side plate), 11c is a support shaft,
M1 each indicates a first motor for rotating the same support shaft.

The main body of the air conditioner having the above configuration is also combined with a control circuit similar to that shown in FIGS. 1 and 2 above.
The blowout mode is controlled as follows.

In that case, a fourth drive circuit for driving the fourth motor M4 for driving the third wind direction changing plate 16 is further provided, and a motor control signal for the motor control circuit 19 corresponding to the fourth drive circuit is formed. Needless to say.

3. Third Embodiment Next, FIGS. 9 to 13 show the structure and operation of an air conditioner according to a third embodiment of the present invention.

First, in this embodiment, the main body of the air conditioner is constructed of a ceiling-mounted type, and the air outlet side is controlled by a single damper member common to the two air outlets. It is characterized by

First, FIG. 9 shows the mechanical structure of the main body of the air conditioner, and reference numeral 1 in the figure indicates an external casing of the main body of the air conditioner which is ceiling-mounted.

The outer casing 1 has a box-shaped cassette structure as a whole, and has first and second grilles, which are two sets of main and sub-air suction ports, on the lower surface of one side and the upper surface of the side. 4A and 4B, and first and second air outlets 31A and 31B are formed on the lower surface and side surface of the other side, respectively.

The first and second grilles 4A and 4B, which are the two sets of main and sub air suction ports, are separated by the partition wall 10 into a first ventilation passage 6 which becomes a main air flow path and a second ventilation passage which becomes a sub air flow path. The ventilation passage 7 is divided into two sets of main and sub-upper and lower air flow passages. A heat exchanger 5 for heating and cooling is installed in the upstream part of the first large-diameter ventilation passage 6 on the lower side. After the air is heat exchanged through the heat exchanger 5, it is introduced into the first cross flow fan 8 disposed on the downstream side of the first ventilation path 6, and is blown out further downstream. ing.

Further, the upper second ventilation passage 7 is directly introduced into the second cross-flow fan 9 disposed in the midstream portion without passing through the heat exchanger 5 as described above, and is further downstream. It is designed to blow out in the direction.

First and second air outlets 31A are located at the downstream ends of the first ventilation passage 6 and the second ventilation passage 7, and are open to the other side of the external casing 1.
, 31B are each provided with a second damper 11B for arbitrarily changing and adjusting the blowing direction of the airflow. The opening/closing angle θ2 of the second damper 11B is determined by the second motor M2.
variably controlled by

On the other hand, reference numeral 11A in the figure indicates first and second ventilation passages 6, 7 formed on the upstream portion 10a side of the partition wall 10.
This is a first damper provided at the communication port 14 that communicates with each other, and the base end is attached to the uppermost end of the partition wall 10 via a shaft so as to be vertically movable. The vertical rotation angle θ1 on the tip side is arbitrarily driven and controlled by, for example, the first motor M1, and the rotation angle θ1
In accordance with It has become.

[0056] Each of the first and second motors M1, M2
As in the case of the first embodiment, the rotation direction and amount of rotation are arbitrarily controlled by the motor control circuit 19, and as a result, the first damper 11A and the second tamper 1
Change each opening degree of 1B.

On the other hand, the motor control circuit 19 is constituted by, for example, a microcomputer, and controls the first and second mode drive circuits 20 and 21 in accordance with the blowout mode set by the blowout mode setting circuit 18. Control. The blowout mode setting circuit 18 includes a wind speed sensor 1
7 and the temperature sensor 16 are input, and based on these detection values, calculations as shown in the flowchart of FIG. 2 are performed to set the blowout mode, and the The rotation amount of the second motors M1 and M2 is controlled, thereby controlling the appropriate hot air blowing state and room temperature distribution state corresponding to the air conditioner operating state as shown in FIGS. 10 to 13. It has become.

[0058] Now, for example, the first damper 11A and the second damper 11 after the heating operation of the air conditioner having the above configuration is started and up to the stage of fine adjustment of the room temperature after the room temperature has shifted to a predetermined temperature.
To explain the specific control method of B, for example, Fig.
0 to as shown in FIG.

(1) First control mode (at the start of heating) That is, at the start of the heating operation, it is necessary to raise the room temperature as quickly as possible, so as shown in FIG. 10, the first damper 11A for temperature control is By controlling the opening on the second grill 4B side to the minimum opening state θ1 = 0 degrees (fully closed state), the second grill 4B, which is the auxiliary air intake port, is completely closed, while the second grill 4B, which is the auxiliary air intake port, is completely closed. 2 damper 11B as the first damper 11B.
The second air outlet 31A is completely opened, and the second air outlet 31A is completely opened.
A large amount of air is sucked in only from the large-diameter first grill 4A and supplied to the heat exchanger 5, and the air is heated and heated through the heat exchanger 5. through the first and second ventilation passages 6 and 7.
The first air outlet 31 is
Only A is used to blow air directly below the room at high speed.

[0060] As a result, the lower part of the room can be heated quickly, and efficient rapid heating can be achieved.

Note that the wind speed Sp of the indoor air at the start of this heating operation (when the heating switch is ON) is Sp=0 m/s, the actual temperature Tp is, for example, Tp=5° C., and the set wind speed Sp1 set at the time of operation is Assume that Sp1=0.5 m/sec and the desired set temperature T1 is T1=20°C.

(2) Second control mode (when the room temperature Tp reaches around the set temperature T1=20°C) Next, when the rapid heating operation in the state shown in FIG. 10 continues for a predetermined time,
Eventually, the room temperature Tp reaches the set temperature T1=20°C. The temperature sensor 1 indicates that the actual room temperature Tp has reached the set temperature T1=20°C (Tp=T1=20°C).
6, the motor control circuit 19 determines this fact, and thereafter, as shown in FIG.
The damper 11A is controlled so that its grill side opening θ1 is at the maximum opening θ1=MAX degrees in order to communicate the second grill 4B side with the second ventilation passage 7, while the communication port 14 is completely closed. The heat exchange air is blocked to prevent the heat exchange air from flowing into the second ventilation passage 7 side. Then, the opening on the side of the second grill 4B is completely opened and the air at room temperature without being passed through the heat exchanger 5 is sucked in from the second grill 4B, which is the auxiliary air intake port, and the second cross flow fan is operated. 9, the first air outlet 31A is used to collide with the heat exchange air (warm air) on the first ventilation path 6 side and blow out the air while deflecting the flow downward. As a result, hot air is prevented from floating due to room temperature air. In this state, the set wind speed Sp=0.
By controlling the air conditioner at a speed of 3 m/sec and a set temperature Tp1 of about 20° C., it is possible to maintain substantially desired steady air conditioning conditions.

(3) Third control mode (adjustment mode) By the way, in the state shown in FIG. 11, the indoor wind speed Sp actually detected and determined is Sp=0.5 m/sec, and the indoor temperature Tp is Tp=18°C. If so, the actual indoor temperature Tp=
18℃ is Tp1-Tp= for the set temperature Tp=20℃
This means that there is a temperature deviation of ΔTp=20−18=2 (° C.).

Therefore, in this case, for example, FIG.
As shown in FIG.
2 is opened by 1/2 of the opening degree compared to the state shown in FIG. 2
The hot air on the first ventilation path 6 side via the heat exchanger 5 is controlled to be blown out from the first air outlet 31A in the horizontal direction indoors from the air outlet 31B. Room temperature air blown horizontally from the second air outlet 31B prevents the warm air blown downward from the first air outlet 31A from floating upward, increasing heating efficiency and creating a hot air circulation state. The above-mentioned set temperature Tp1=20° C. is maintained by forming a temperature of 20° C. and thereby stabilizing the distribution state of the room temperature.

(4) Fourth control mode (during cooling operation) Furthermore, the ceiling-mounted air conditioner is further controlled as shown in FIG. 13, for example, during cooling operation.

That is, during the cooling operation, it is better to effectively send cold air to the upper part of the room near the ceiling, so first, the first damper 11A is used to open the second grille 4B side opening, which is the auxiliary air intake. At the same time, the opening of the second damper 11B on the second outlet 31B side is controlled to open to θ2=MAX degrees, and the first outlet 31A is completely closed and cooled via the heat exchanger 5. The cooled air is efficiently blown out horizontally from the second outlet 31B side at high wind speed, and the blown out cold air is spread to the upper part of the entire room as much as possible. As a result, an effective cooling state with uniform temperature distribution can be achieved.

4. Fourth Embodiment FIGS. 14 to 18 show the configuration and operation of an air conditioner according to a fourth embodiment of the present invention.

First, FIG. 14 shows the mechanical structure and control circuit of the main body of the air conditioner, and reference numeral 1 in the figure indicates an external casing of the main body of the air conditioner for wall-mounting.

The external casing 1 has a box-shaped cassette structure as a whole, and has a first air suction grill 4A on the top thereof, and a second air suction grill 4B at the center of the front surface thereof. However, an air outlet 30 consisting of two air outlets 14b and 14c, a first and a second air outlet, is further formed at the center of the lower surface. On the other hand, inside thereof, the first grill 4 is connected from the first air outlet 14b to the first air outlet 14b.
A second ventilation passage 7 is defined by a first ventilation passage 6 communicating with A and a partition wall 10 and communicating from the second air outlet 14c to the second grille 4B. . First, in the first ventilation passage 6, a heat exchanger 5, a first cross flow fan 8, and a first wind direction changing plate 12 are sequentially arranged from the upstream side to the downstream side. Further, a second cross-flow fan 9 is disposed in the second ventilation passage 7, located approximately in the middle from the upstream side to the downstream side, and furthermore, a second air outlet 14 on the downstream side is disposed.
A second wind direction changing plate 13 is provided at the downstream portion.

Further, the second grille 4B is provided with a damper 11 rotatable in the direction of the arrow for opening and closing the opening thereof. The damper 11 is controlled to open and close depending on the direction and amount of rotation of a first motor M1 that is rotationally driven by a first motor drive circuit 20. When the first damper 11 has its valve body blocking the opening of the second grille 4B, the first damper 11 connects both the first ventilation passage 6 and the second ventilation passage 7 to a heat exchanger. 5 to communicate only with the first grill 4A, which is the main air intake port, and the indoor air sucked in through the first grill 4A is heated and heated through the heat exchanger 5, and then the air is heated and heated to each ventilation. The air passes through the first and second crossflow fans 8 and 9 of the channels 6 and 7, and is fused and blown out from the air outlet 30 at high wind speed.

On the other hand, in the state shown in FIG. 17 in which the first damper 11 is further opened to the bottom side of the heat exchanger 5 from the shown state, the first damper 11 is opened through the heat exchanger 5 on the second ventilation path 7 side. The warm air is mixed with room temperature air introduced from the second grill 4B and blown out from the second outlet 14c on the downstream side, and the air flow whose temperature has been relatively lowered by the mixture of the room temperature air is sent to the final air outlet 30. The high-temperature side air blown out from the first blow-off port 14b side is merged with the high-temperature side air flow, and the high-temperature side air flow is blown out in such a way as to prevent the high-temperature side air flow from floating up.

[0072] Furthermore, the first and second wind direction changing plates 12,
13 also have second motors M2 and M2, respectively, similar to the damper 11 described above.
It is rotationally driven by a third motor M3, and is controlled to open and close according to the rotation direction and amount of rotation of each motor M2, M3 driven by the second and third motor drive circuits 21, 22.

Each of the first to third motors M1 to M3 is
The amount of rotation is arbitrarily controlled by the motor control circuit 19, thereby arbitrarily controlling the opening degrees of the damper 11 and the first and second wind direction changing plates 12, 13.

On the other hand, the motor control circuit 19 is constituted by a microcomputer as in each of the above embodiments, and controls the first to third motors in accordance with the blowout mode set by the blowout mode setting circuit 18. circuit 2
Controls 0 to 22. Detection signals from the wind speed sensor 17 and temperature sensor 16 are input to the blowout mode setting circuit 18, and calculations as shown in the flowchart of FIG. 2 described above are performed based on these detection values. to set the blowout mode and control the rotation amounts of the first to third motors M1 to M3 described above.
As shown in Fig. 2, the system controls the hot air blowing state and the room temperature appropriately according to the operating state of the air conditioner.

[0075] Now, for example, the damper 11, the first and second wind direction changing plates 12,
The specific control method of No. 13 will be explained as shown in FIGS. 15 to 19, for example.

(1) First control mode (at the start of heating) That is, at the start of the heating operation, it is necessary to raise the room temperature as quickly as possible, so as shown in FIG. By controlling the side opening of the grill 4B to the minimum opening state θ1 = 0 degree (fully closed state), the second grill 4B, which is the auxiliary air intake port, is completely closed, while the first and second grills 4B are completely closed. The air direction changing plates 12 and 13 of No. 2 are controlled to have openings substantially parallel to the vertical direction, and a large amount of air sucked from the large-diameter first grill 4A is heat-exchanged by the heat exchanger 5, thereby increasing the heating. After heating, the first and second air outlets 14 are passed through both the first and second ventilation passages 6, 7 by both the first and second cross flow fans 8, 9.
It blows out from b and 14c.

In this state, the first and second wind direction changing plates 12 and 13 are placed in a vertically substantially parallel state to function as a rectifying plate, and the first air outlet 14
The hot air from the b side and the hot air from the second air outlet 14c are made to flow in parallel and are finally blown out from the air outlet 30 toward the lower part of the room at a high flow rate.

As a result, warm air quickly spreads to the lower part of the room, allowing efficient rapid heating.

Note that the actual temperature Tp of the indoor air at the start of the heating operation (when the heating switch is turned on) is, for example, Tp=5°C,
It is assumed that the wind speed Sp is Sp=0 m/s, the set wind speed Sp1 set during operation is Sp1=0.5 m/sec, and the desired set temperature T1 is T1=20°C.

(2) Second control mode (when the room temperature Tp reaches around the set value Tp=T1=20°C) Next, when the rapid heating operation in the state shown in FIG. Tp reaches the set temperature T1=20°C. Then, the actual room temperature Tp is the set temperature T1 = 20°C
(Tp=T1=20°C) is detected by the temperature sensor 16, the motor control circuit 19
determines this fact, and thereafter, as shown in FIG. 16, by controlling the opening degree θ1 of the damper 11 on the second grille 4B side to the maximum opening degree θ=MAX degrees, the second grille is Room temperature air is introduced into the second ventilation path 7 through the opening of the partition wall 10, and the second air direction changing plate 13 is tilted until it comes into contact with the lower end of the partition wall 10. As a result, by blowing out in the horizontal direction the low-temperature air that is lowered in temperature by mixing with the room temperature air that is blown out from the second air outlet 14c through the second ventilation path 7, the first air outlet 14b is
To prevent high-temperature air blown downward from the side from floating up, and to make the distribution of high-temperature air downward in the room uniform. and,
In this state, approximately desired steady air conditioning conditions can be maintained by controlling the set wind speed Sp to about 0.3 m/sec and the set temperature Tp1 to about 18°C.

(3) Third control mode (first adjustment mode) Now, for example, in the state shown in FIG. Assuming that Tp = 20°C, the actual indoor temperature Tp = 20°C is the set temperature Tp = 1 in Fig. 16 above.
Tp-Tp1=ΔTp=20-18=2(
℃), and the indoor wind speed Sp=0.5m/se
c is Sp- for the set wind speed Sp1 = 0.3 m/sec
Sp1=ΔP=0.3-0.5=-0.2(m/sec
) is the wind speed deviation (deficiency).

Therefore, in this case, for example, FIG.
As shown in FIG. 16, the opening degree θ2 of the first wind direction changing plate 12 and the opening degree θ1 of the damper 11 are fixed as shown in FIG. Two air streams with different temperatures are blown out downward in substantially parallel directions. As a result, the flow rate and room temperature are slightly lowered to converge to the set temperature Tp1=18°C.

(4) Fourth Control Mode (Second Adjustment Mode) In the second control mode shown in FIG. 16, there may be a case where the actually measured room temperature Tp is considerably higher than the set temperature Tp1.

In such a case, for example, as shown in FIG. 18, the second air direction changing plate 13 is opened further, for example, to a vertical position, so that the air flows from the second air outlet 14c side where the temperature is relatively low. The blown air is sent to the first air outlet 14.
By effectively blowing into the hot air blown from side b, the degree of mixing of both airs is improved, and the room temperature is effectively lowered while making the temperature distribution uniform, and the above original set temperature Tp1 is quickly set. We aim to converge on this.

(5) Fifth control mode (during cooling operation) Furthermore, the air conditioner described above is configured in the mode shown in FIG. 1 during cooling operation, for example.
It is controlled as shown in 9.

That is, during the cooling operation, it is better to effectively send cold air to the upper layer of indoor air near the ceiling, so first, the damper 11 closes the second grille 4B on the side of the auxiliary air suction port and closes the heat exchanger. 5 is efficiently supplied to the first and second air outlets 14b, 14c by both the first and second cross flow fans 8, 9. Each of the wind direction changing plates 12 and 13 of 14c is controlled to be in a nearly horizontal state as shown in the figure, so that the cool air blown out is controlled to be blown out in a horizontal direction so as to spread to the upper part of the entire room as much as possible. As a result, the temperature distribution is uniform and a cooling state can be achieved effectively.

5. Fifth Embodiment Next, FIG. 20 shows the configuration of an air conditioner according to a fifth embodiment of the present invention.

The air conditioner of this embodiment is based on the configuration of the air conditioner of the fourth embodiment, and the opening of the second grille 4B, which is the auxiliary air suction port, in the same configuration is arranged in the upper surface as shown in the figure. It is characterized in that it is opened on the side and communicated with the second ventilation passage 7 on the lower side in a bypass state, and a similar damper 11 is provided at the communication port 43. In the air conditioner having this configuration, if the damper 11 and the first and second wind direction changing plates 12 and 13 are controlled in the same manner as in FIGS. 15 to 19 of the fourth embodiment, exactly the same function can be achieved. Can be done.

6. Sixth Embodiment Next, FIG. 21 shows the configuration of an air conditioner according to a sixth embodiment of the present invention.

The air conditioner of this embodiment is based on the configuration of the air conditioner of the fourth embodiment, and the second grill 4B and the damper 11 of the second grill 4B in the same configuration are eliminated. , the heat exchanger 5 is separate for the first ventilation passage 6 side and the second ventilation passage 7 side 5A,
5B, for example, by arbitrarily variably controlling the supplied refrigerant capacity, the first and second heat exchangers 5
A and 5B have different heat exchange capabilities, and the same temperature difference as in the fourth embodiment is created between the air blown out through the first ventilation path 6 and the air blown out through the second ventilation path 7. It is designed to be formed according to the situation. In the air conditioner having this configuration, the first and second wind direction changing plates 12 and 13 are arranged as shown in FIG. 15 of the fourth embodiment.
- Exactly the same function can be realized by controlling in the same manner as in FIG. 19.

7. Seventh Embodiment Next, FIGS. 22 to 27 show the structure and operation of an air conditioner according to a seventh embodiment of the present invention.

First, FIG. 22 shows the structure of the main body of the air conditioner and the configuration of the corresponding control circuit, and reference numeral 1 in the figure indicates the external casing of the air conditioner for ceiling mounting.

The outer casing 1 has a box-shaped cassette structure as a whole, and has a first grille 4A serving as a main air intake port and a second grille 4B serving as a sub air intake port on the lower surface of one side thereof. are each opened.

A heat exchanger storage space 29 is formed in the upper part of the first grill 4A, and the heat exchanger 5 is stored and fixed in the forward tilted state as shown in the figure. There is. On the downstream side of the heat exchanger 5, there are approximately two main and sub-main ventilation passages, a first ventilation passage 6 on the lower side and a second ventilation passage 7 on the upper side, which are vertically independently defined by the partition wall 10. They are formed to extend in parallel. First and second cross flow fans 8 and 9 are disposed in the first and second ventilation passages 6 and 7, respectively, located downstream of the heat exchanger 5, and The air sucked in from the grill 4A is heated (or cooled) through the heat exchanger 5 and then blown out downstream. On the other hand, the second grille 4B is opened at the upstream side of the second crossflow fan 9 of the second ventilation path 7 via the bypass passage 28, and the opening 2
7 is provided with a first damper 11A. The first
The damper 11A is arbitrarily controlled to open or close depending on the direction and amount of rotation of the first motor M1, which is rotationally driven by the first motor drive circuit 20. The first damper 11A is shown in FIG.
In this state, the bypass passage 28 is closed and the second
Only the heat exchange air via the heat exchanger 5 is introduced into the ventilation passage 7 position. On the other hand, in the state shown in FIG. 24 in which the tip is opened to the upper wall side of the bypass passage 28, the heat exchange air via the heat exchanger 5 is further supplied with room temperature from the first grill 4B via the bypass passage 28. Introduce and mix air.

On the other hand, the downstream of the first ventilation passage 6 and the second ventilation passage 7 are finally merged at the merging part 41, and the first
Or it is blown into the room using the second blow-off ports 14A, 14B. A second damper 11B is provided in the merging section 41, and the second damper 11B controls the open/closed state of the first or second outlet 14A, 14B, for example in FIG.
3. It is designed to be arbitrarily variable to at least three states shown in FIGS. 24 and 27. The second damper 11
The open/close state of B is drive-controlled by the second motor M2.

Furthermore, reference numeral 42 is a wind direction changing plate provided at the downstream end of the second ventilation passage 7, which controls the direction of the air flow blown out through the second ventilation passage 7 at the confluence section 41. The merging direction of the airflow from the first ventilation passage 6 side is variably controlled into at least three states shown in, for example, FIGS. 23, 25, and 27. The wind direction changing plate 42 is connected to the third motor M
The operation is controlled by 3.

Each of the first to third motors M1 to M3 is
The amount of rotation of each of the first and second dampers 11A is controlled arbitrarily by the motor control circuit 19, thereby causing the first and second dampers 11A to
, 11B, each opening degree of the wind direction changing plate 42 is changed.

On the other hand, the motor control circuit 19 is constituted by, for example, a microcomputer, and controls the first to third motor drive circuits 20 to 22 in accordance with the blowout mode set by the blowout mode setting circuit 18. Control. The blowout mode setting circuit 18 includes a wind speed sensor 1
7 and the temperature sensor 16 are input, and based on these detection values, calculations as shown in the flowchart of FIG. ~Control the amount of rotation of the third motors M1 to M3, thereby controlling the appropriate warm air blowing state and room temperature distribution state corresponding to the air conditioner operating state as shown in FIGS. 23 to 27. It has become.

[0099] Now, for example, the first damper 11A and the second damper 11B from the start of heating operation of the air conditioner having the above configuration to the stage of fine adjustment of the room temperature after the room temperature has shifted to a predetermined temperature.
A specific method of controlling the wind direction changing plate 42 will be described, for example, as shown in FIGS. 23 to 27.

(1) First control mode (at the start of heating) That is, at the start of heating operation, it is necessary to raise the room temperature as quickly as possible, so as shown in FIG. 23, the first damper 11A for temperature control is activated. is controlled to close the bypass passage 28 to close the first and second ventilation passages 6, 7.
Only the high-temperature air heated through the heat exchanger 5 is blown out from both sides to the confluence section 41 side.

[0101] In this state, the wind direction changing plate 42 is controlled to be parallel to the flow with the lowest flow resistance to function as a rectifying plate, while the second damper 11B is controlled to be parallel to the flow with the least flow resistance. 14B in a closed state, and both the high-temperature air from the first ventilation passage 6 side and the high-temperature air from the second ventilation passage 7 side are directed directly into the room using the first air outlet 14A. Warm air is quickly distributed to the lower part of the room by blowing the air in the direction at high velocity.

[0102] As a result, efficient rapid heating becomes possible.

[0103] The actual temperature Tp of the indoor air at the start of the heating operation (when the heating switch is turned on) is, for example, Tp=5°C,
It is assumed that the wind speed Sp is Sp=0 m/s, the set wind speed Sp1 set during operation is Sp1=0.5 m/sec, and the desired set temperature T1 is T1=20°C.

(2) Second control mode (when the room temperature Tp reaches around the set value Tp=T1=20°C) Next, when the rapid heating operation in the state shown in FIG. Tp reaches the set temperature T1=20°C. Then, the actual room temperature Tp is the set temperature T1 = 20°C
(Tp=T1=20°C) is detected by the temperature sensor 16, the motor control circuit 19
determines this fact, and thereafter, as shown in FIG. 24, first the first damper 11A is opened and the bypass passage 28 is opened.
is communicated with the second ventilation passage 7, and room temperature air is introduced into the second ventilation passage 7 through the second grille 4B, thereby lowering the temperature of the air passing through the second ventilation passage 7.

Next, the first grill 11B is attached to the partition wall 10.
is opened to the downstream end position to allow the first ventilation passage 6 to communicate with the first air outlet 14A and the second ventilation passage 7 with the second air outlet 14B in a mutually independent state. . At the same time, the wind direction changing plate 42 is slightly tilted horizontally.

As a result, the high-temperature warm air from the first ventilation passage 6 is efficiently blown downward indoors from the first air outlet 14A, and is then blown toward the first and second grills 4A and 4B. Together with the current, indoor circulation air is formed, and hot air at the set temperature level is continuously supplied to the lower part of the room, and the above-mentioned second
The low-temperature air from the second ventilation passage 7 is continuously blown out horizontally from the outlet 4B toward the upper part of the room, and the low-temperature air from the upper part blows out the low-temperature air from the lower part. This effectively suppresses the rise of high-temperature air. the result,
A warm air layer with a stable temperature distribution is maintained in the lower region of the room. In this state, the set wind speed Sp=0.3m
By controlling the temperature Tp1 to approximately 18° C./sec, it is possible to maintain substantially desired steady air conditioning conditions.

(3) Third control mode (adjustment mode) Now, for example, in the state shown in FIG. 24, the indoor wind speed Sp actually detected and determined is Sp=0.5 m/sec, and the indoor temperature Tp is Tp= Assuming that the temperature is 20°C, the actual indoor temperature Tp=20°C is the set temperature Tp=20°C in FIG.
Tp-Tp1=ΔTp=20-18=2 for 18°C
(℃) temperature deviation, and indoor wind speed Sp=0.5m/s
ec is Sp for the set wind speed Sp1=0.3m/sec
−Sp1=ΔP=0.3−0.5=−0.2(m/se
This means that there is a wind speed deviation (deficiency) of c).

Therefore, in this case, for example, FIG.
As shown in FIG. 2, the opening degree of the first damper 11A is as shown in FIG.
4, and on the other hand, the opening degree of the wind direction changing plate 42 is returned to the state shown in FIG. 23, and the second damper 11B is controlled to close the second air outlet 14B as shown in FIG. By increasing the degree of mixing of the high-temperature air from the first ventilation passage 6 and the low-temperature air from the second ventilation passage 7, the warm air is circulated indoors, thereby making the temperature distribution uniform. As a result, the temperature can be appropriately converged to the set temperature.

In this state, if the opening degree of the wind direction changing plate 42 is controlled to be more vertical as shown in FIG. 26, the high temperature air from the first ventilation passage 6 and the second ventilation passage The degree of mixing with the low temperature wind from 7 becomes higher.

(4) Fourth control mode (during cooling operation) Furthermore, the air conditioner is configured to operate in the mode shown in FIG. 2 during cooling operation, for example.
It is controlled as shown in 7.

That is, during the cooling operation, it is better to effectively send cold air to the upper layer of indoor air near the ceiling, so first, the first damper 11A is used to bypass the second grille 4B side on the side of the auxiliary air suction port. The passage 28 is closed and the second outlet 14B is controlled to be fully open, so that the cold air cooled through the heat exchanger 5 is efficiently transferred to the second cross fan 8, 9 by both the first and second cross fans 8, 9. Air outlet 1
4B, the wind direction changing plate 42 is controlled to be nearly horizontal as shown in the figure, so that the cool air blown out is controlled to be blown out in a horizontal direction so as to spread as much as possible to the upper part of the entire room. As a result, the temperature distribution is uniform and a cooling state can be achieved effectively.

8. Eighth Embodiment Next, FIG. 28 shows the configuration of an air conditioner according to an eighth embodiment of the present invention.

The air conditioner of this embodiment is characterized in that the configuration of the ceiling-mounted air conditioner of the seventh embodiment is modified so that it can also be applied to a ceiling-mounted type.

[0114] That is, in this example, the above figure 2
The first and second air outlets 14A in the configuration of No. 2
, 14B are configured only for the first air outlet 14A, and the second air outlet 14B is omitted, so that it can be buried in the ceiling as shown in the figure.

[0115] With this configuration as well, FIG.
3. Each of the control modes shown in FIGS. 25 and 26 can be realized in exactly the same way.

9. Ninth Embodiment FIG. 29 shows the configuration of an air conditioner according to a ninth embodiment of the present invention.

The air conditioner of this embodiment is based on the configuration of the air conditioner of the seventh embodiment, and the second grill 4B and the first damper 11A of the second grill 4B in the same configuration are respectively On the other hand, the heat exchanger 5 can be configured into separate ones 5A and 5B for the first ventilation passage 6 side and the second ventilation passage 7 side, and the refrigerant capacity to be supplied to them can be adjusted arbitrarily. By variably controlling the two heat exchangers 5A and 5B to have different heat exchange capacities, the air blown out through the first ventilation passage 6 and the second ventilation passage 7 can be variably controlled.
The same temperature difference as in the seventh embodiment is created between the air blown through and the air blown out according to the operating conditions. In the air conditioner having this configuration, if the damper 11B and the wind direction changing plate 42 on the side of the air outlets 14A and 14B are controlled in the same manner as in FIGS. 23 to 27 of the seventh embodiment, the same embodiment It is possible to achieve exactly the same functionality as that of .

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the structure of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing the control operation of the motor control circuit section of the air conditioner.

FIG. 3 is a cross-sectional view showing the operating state of each part of the air conditioner in a first control mode.

FIG. 4 is a sectional view showing the operating state of each part of the air conditioner in a second control mode.

FIG. 5 is a cross-sectional view showing the operating state of each part of the air conditioner in a third control mode.

FIG. 6 is a sectional view showing the operating state of each part of the air conditioner in a fourth control mode.

FIG. 7 is a sectional view showing the structure of an air conditioner according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing the structure of a damper section, which is a main part of the air conditioner.

FIG. 9 is a sectional view showing the structure of an air conditioner according to a third embodiment of the present invention.

FIG. 10 is a sectional view showing the operating state of each part of the air conditioner in a first control mode.

FIG. 11 is a sectional view showing the operating state of each part of the air conditioner in a second control mode.

FIG. 12 is a sectional view showing the operating state of each part of the air conditioner in a third control mode.

FIG. 13 is a sectional view showing the operating state of each part of the air conditioner in a fourth control mode.

FIG. 14 is a sectional view showing the structure of an air conditioner according to a fourth embodiment of the present invention.

FIG. 15 is a sectional view showing the operating state of each part of the air conditioner in a first control mode.

FIG. 16 is a sectional view showing the operating state of each part of the air conditioner in a second control mode.

FIG. 17 is a sectional view showing the operating state of each part of the air conditioner in a third control mode.

FIG. 18 is a cross-sectional view showing the operating state of each part of the air conditioner in a fourth control mode.

FIG. 19 is a sectional view showing the operating state of each part of the air conditioner in a fifth control mode.

FIG. 20 is a sectional view showing the structure of an air conditioner according to a fifth embodiment of the present invention.

FIG. 21 is a sectional view showing the structure of an air conditioner according to a sixth embodiment of the present invention.

FIG. 22 is a sectional view showing the structure of an air conditioner according to a seventh embodiment of the present invention.

FIG. 23 is a cross-sectional view showing the operating state of each part of the air conditioner in a first control mode.

FIG. 24 is a cross-sectional view showing the operating state of each part of the air conditioner in a second control mode.

FIG. 25 is a sectional view showing the operating state of each part of the air conditioner in a third control mode.

FIG. 26 is a sectional view showing the operating state of each part of the air conditioner in a fourth control mode.

FIG. 27 is a sectional view showing the operating state of each part of the air conditioner in a fifth control mode.

FIG. 28 is a sectional view showing the structure of an air conditioner according to an eighth embodiment of the present invention.

FIG. 29 is a sectional view showing the structure of an air conditioner according to a ninth embodiment of the present invention.

[Explanation of symbols]

1 is an external casing, 2 is a wall surface, 3 is a ceiling surface, 4a, 4
A is a first grill, 4b, 4B are second grills, 4c is a third grill, 5, 5A, 5B are heat exchangers, 6 is a first ventilation path, 7 is a second ventilation path, 8 1 is a first cross-flow fan, 9 is a second cross-flow fan, 10 is a partition wall, 1
1 is a damper, 11A is a first damper, 11B is a second damper
damper, 12 is a first wind direction changing plate, 13 is a second wind direction changing plate, 14a is a communication port, 14b is a first air outlet, 1
4c is a second air outlet, 16 is a third wind direction changing plate, 19 is a motor control circuit, 20 is a first motor drive circuit, 21 is a second motor drive circuit, 22 is a third motor drive circuit,
28 is a bypass passage, 30 is an air outlet, and 31A is a first
31B is the second air outlet, 42 is the wind direction change plate,
M1 is a first motor, M2 is a second motor, M3 is a third motor, and M4 is a fourth motor.

Claims (4)

[Claims] Claim 1: A first ventilation path (8) that is equipped with a first ventilation fan (8) and that passes air at a predetermined temperature through a heat exchanger (5).
6) and a heat exchanger (5) comprising a second blower fan (9).
and a second ventilation path (2) through which air having a predetermined temperature difference with respect to the air passing through the first ventilation path (6) is introduced by introducing air through the heat exchanger (5) and air not through the heat exchanger (5). 7), and the air flow blown out through the second ventilation path (7) is formed so that the air flow blown out through the second ventilation path (7) is located above the air flow blown out through the first ventilation path (6) at the air blowing position. An air conditioner comprising an air outlet (30). 2. The air introduction portion of the second ventilation passage (7) has a temperature that is higher than that of the first ventilation passage (6) during steady operation. A claim characterized in that the opening amount of the heat exchanger side air inlet and the opening amount of the external air inlet (4c), (4B) are set so that the temperature is relatively lower than the temperature of the air passing through. The air conditioner according to item 1. 3. The air inlet portions (4c) and (4B) of the second ventilation path (7) have a temperature that is higher than the temperature of the air passing through the second ventilation path (7) during steady operation. The amount of air introduced through the heat exchanger (5) and the heat exchanger (5) so that the temperature is relatively lower than the temperature of the air passing through the ventilation path (6) of No. 1.
2. The air conditioner according to claim 1, further comprising air introduction ratio adjusting means (11), (11A) for arbitrarily variably adjusting the ratio of the amount of external air introduced that does not pass through the air. 4. The first blower fan (8) and the second blower fan (9) are configured so that their rotational speeds can be controlled independently of each other. , 2 and 3.