JPH02103331A - Ceiling embodies type air conditioner - Google Patents

Abstract

PURPOSE:To improve the temperature distribution and enhance the efficiency by keeping the blow-off angle in horizontal state only for a specified time under control when an integrated value of the operation time turns into a preset time. CONSTITUTION:During rise operation, such as initial starting time of operation, the angle of louvers 12a and 12b is arranged to be larger so that temperature- controlled air may be discharged directly in dwelling quarters and its temperature may be promptly brought near a preset value. When the temperature of a room 14 approaches the preset value, high temperature air starts settling around the ceiling. This time is decided by an operation time integration means 19 while the louvers 12a and 12b are driven by blow-off angle change over means 20a and 20b so that the blow-off angle may be kept horizontal. An attempt to control the temperature in dwelling quarters forces the air circulation to be carried out definitely, which equalizes the indoor temperature distribution and hence improves the efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a ceiling-embedded air conditioner, and particularly to control of the air outlet angle thereof.

Prior Art The conventional technology will be explained with reference to FIGS. 6 to 8. 1 is an indoor unit of a ceiling-embedded air conditioner, ceiling wall 2
The lower surface of the indoor unit 1 is opened substantially on the same plane as the ceiling 4. The indoor unit 1 is composed of an outer shell 5 and a lower grille 6, and indoor heat exchangers 7a and 7b of the cooling system are installed inside the indoor unit 1, and a blower 8 is installed so as to be able to exchange heat with each of them. .

A rectangular suction port 10 is provided in the center of the lower grille 6, and outlet grilles 11a, 11b are provided around the suction port 1o.
has been established. Approximately half of the air blown from the blower 8 passes through the heat exchanger 7a, passes through the blowout grille 11a, and blows out diagonally downward and forward. In addition, the remaining air blown from the blower 8 is passed through the heat exchanger 7b, and the air is passed through the air outlet grill 11b.
The structure is such that the air passes through the air and blows out diagonally downward and forward.

Furthermore, movable louvers 12a and 12b are installed to control the direction of each blowout air.

A remote control type temperature setting means 100 is provided which allows the user to set the room temperature to any desired temperature.

A suction temperature sensor 13 is fixedly installed inside the suction port 1o to measure the suction temperature and also to set the temperature setting means 1.
The temperature difference between the set temperature and the temperature set by 00 is detected, and the cooling system is turned off to maintain the inside of the room at approximately -.

The operation of the conventional ceiling-embedded air conditioner configured in this manner will be explained.

Generally, a ceiling-embedded air conditioner is often installed on the ceiling of an office, store, or living room, and controls the temperature of the room 14.

The room 14 has a ceiling 4. It consists of side walls 15, 16 and a floor 17. Furthermore, the space surrounded by the two-dot chain line in FIG. 8 is the living area, and in ASHRAE's 5TANDARD, the living area is defined as a space with a height of 18ooIIrII or less and a distance of 600U or more from the side wall. It is defined that the Tsuma Sims generally operate in this residential area.

At this time, the flow lines of the blown air are such that the air heated by the heat exchangers 7a and 7b (cooled during cooling) is blown diagonally downward from the air outlet grilles 11a and 11b. , the interior of the room 14 is heated in a large arc within the living area (
cooling) and then sucked into the central suction port 10 of the indoor unit 1. At this time, each of the blown air flows a and b is the blown air volume between the roads.

This is the blowing direction, and the streamlines of airflows a and b both draw approximately the same arc.

The temperature of the air sucked in this way is measured by the suction temperature sensor 1.
3, the temperature of the blown air is adjusted to maintain the average temperature in the living area of the room 14 at approximately the set temperature.

Problems that the invention aims to solve The ceiling of a store, office, or living room is 2.5 to 3 cm above the floor.
When the indoor unit is installed in this position, the high temperature air stagnates near the ceiling due to the specific weight of the air during heating, and the air rises above the living area, which is the area of human activity. Since heating is wasted near the ceiling of the room, there is a problem of extremely inefficient heating and high running costs.

The present invention solves the above-mentioned problems, and aims to provide a ceiling-embedded air conditioner that can provide a good indoor temperature distribution at the same running cost.

Means for Solving the Problems In order to achieve this object, the ceiling-embedded air conditioner of the present invention is provided with an operating time accumulating means for accumulating operating time, and an air blowing angle switching means for controlling an air blowing angle. It is something.

With this configuration, after a certain period of time has elapsed from the start of heating operation, when the indoor temperature stabilizes and high-temperature air begins to stagnate near the ceiling, the operating time integrating means sends a signal to the blow-off angle switching means, and the operation is performed only for a certain period of time. Controls the hot air so that it blows out approximately parallel to the ceiling.

As a result, the hot air flows along the ceiling, side wall, and floor surface together with the high temperature air near the ceiling, generates a large circulation sine, and is sucked into the intake port of the indoor unit.

EXAMPLE An example of the present invention will be explained below with reference to FIGS. 1 to 6. Note that explanations of the same components as those of the prior art will be omitted, and only the different points will be described.

FIG. 1 is a block diagram showing an embodiment of the present invention.

Reference numeral 18 denotes an indoor temperature setting means, and reference numeral 19 denotes an operation time integration means provided on the remote control, which sends a signal to the blowout angle switching means 20a, 20b when a preset time has elapsed, and the blowout angle switching means 20a, 20b changes the angle of the louvers 12a, 12b based on the signal.

As shown in FIG. 2, the blowing angle switching means 20a is connected to a female thread of a motor shaft 21a which has a female thread at the tip of a pulse motor 22&.
This is a configuration in which the male screw of a is screwed into.

Next, the operation of the ceiling-embedded air conditioner configured as described above will be explained using the flowchart shown in FIG.

After the person using the room 14 turns on the power to the air conditioner ta1, the temperature is set to a desired room temperature "set" in step 24, and the operation of the air conditioner is started in step 26.

Then, in step 2e, diagonal downward blowing is performed, which is the initial setting, and in step 27, the operating time is integrated.

Until the preset time θ has elapsed, the process proceeds in the direction of No in step 28. After the time θ has elapsed, the flow advances in the YE3D direction in step 28, and in step 29, the blowing angle switching means 20a, 20b are used to control the louvers 12a, 12b.
, and set the blowing direction so that it is approximately parallel to the ceiling surface. In this state, after the operation time accumulating means 19 performs horizontal blowing operation for a certain period of time, it is determined in step 30 whether the operation has ended, and if the operation has not ended, proceed in the direction of No.
Diagonal downward blowing is performed again in step 26. To switch the blowing direction like this, turn off the power in step 30 and press YES.
Repeat υ until you move in the direction of S. As a result, during start-up operation such as at the beginning of operation, the angles of the louvers 12a and 12b are set large, so that temperature-controlled air can be blown directly into the living area as shown in Figure 4. The temperature of the living area can be brought close to the set temperature quickly.

When the temperature of the chamber 14 approaches the set temperature, the high temperature air begins to stagnate near the ceiling. This time is determined by the operating time integrating means 19, and the blowing angle switching means 2oa, 2
Louver 12a by ob.

12b is driven and the blowing direction is set to be approximately parallel to the ceiling surface. Therefore, the hot air (cold air) blown out is
Flows along the ceiling 4 and opposing side walls 15 as shown in the figure.
．． Hit the top of 16.

Then, the colliding flow changes to a downward flow, and the side wall 1
It flows downward along 5.16. And floor surface 17
After reaching this point, the air spreads across the floor 17 and is sucked in through the suction port 10 of the indoor unit 1, generating large circulation throughout the room 14. Therefore, strong winds do not occur in the living area, and soft temperature control is possible from the outer shell near the wall of the room 14.

According to the above embodiment, at the beginning of operation, temperature-controlled air is directly blown into the living area with the blowing direction directed diagonally downward, and control is performed so that the desired temperature is quickly reached.

On the other hand, when the temperature of the chamber 14 approaches the set temperature, the blowing direction is set approximately parallel to the ceiling 4, and the blowing air flows along the ceiling surface, so the wind speed is difficult to decrease, and the air blows along the ceiling surface while moving toward the side walls 15, 16. After reaching the upper end, it flows downward along the side walls 15 and 16, passes through the floor surface 17, and is sucked into the suction port 10 of the indoor unit 1. As a result, large circulation occurs in the chamber 14 along the wall surface. When the temperature in the shoe room 14 reaches a substantially stable temperature, the air outlet is placed near the ceiling outside the living area, and the temperature of the living area is controlled from the outer shell. In addition, the airflow slows down due to the flow along the wall.<<
Since the circulation is ensured, it is possible to achieve a more uniform temperature distribution indoors.

Especially during heating, high temperature air tends to stay near the ceiling 4.
My head was wasting heat all the time.

This kind of high-temperature air is blown away by a horizontal blowout flow,
Since it is carried into the living area, efficient heating is possible.

In this embodiment, the louvers 12a and 12b are driven using pulse motors 22a and 22b, but the louvers 12a are driven using a shape memory alloy or the like.

It is also possible to drive 12b.

Effects of the Invention As described above, the present invention includes an operating time accumulating means for accumulating the operating time and an air blowing angle switching means for controlling the blowing angle, and the operating time is determined based on the output signal from the operating time accumulating means. When the integrated value reaches a preset time, the blowing angle is controlled to be approximately parallel to the ceiling for a certain period of time.

As a result, high-temperature air tended to stay near the ceiling 4 during heating, unnecessarily heating the area above the head.
This high-temperature air is blown away by a horizontal blowout flow and carried into the living area, which improves the temperature distribution in the vertical direction and enables efficient heating and energy savings.

These K provide a ceiling-embedded air conditioner that can provide energy-saving and comfortable air conditioning.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is an enlarged view of the main parts of this embodiment, Fig. 3 is a flowchart showing an example of a program for switching the blowout angle, and Fig. 4 is a flowchart showing an example of a program for switching the blowout angle. 6 is a sectional view showing the indoor airflow during diagonal downward blowing operation, Fig. 6 is a sectional view showing the indoor airflow during horizontal blowing operation, Fig. 6 is a bottom view of a conventional air conditioner, and Fig. 7 is a diagram of the above air conditioner. The center sectional view and FIG. 8 are sectional views showing indoor airflow in a conventional example. 19... Operating time accumulating means, 20a, 20b.
...Blowout angle switching means. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (1)

[Claims] The apparatus includes an operating time accumulating means for accumulating operating time and an air blowing angle switching means for controlling a blowing angle, and when the integrated value of the operating time reaches a preset time based on an output signal from the operating time accumulating means. , a ceiling-mounted air conditioner characterized by controlling the air outlet angle so that it is approximately parallel to the ceiling for a certain period of time.