JPH0363445A - Air conditioner - Google Patents

Abstract

PURPOSE:To provide comfortable space with satisfactory temp. distribution by a method wherein the temp. of every part in a room is detected and from its temp. and the set temp. the opening areas of blowoff holes installed in the inside of diffuser grills are controlled. CONSTITUTION:In the inside of a suction hole 10 near respective diffuser grills 11-a, 11-b, 11-c, 11-d suction temp. sensors 15-a, 15-b, 15-c, 15-d are installed respectively and sucked air passes through heat exchangers 7-a, 7-b by means of blowers 8-a, 8-b and then blows off from blowoff holes 11-a, 11-b, 11-c, 11-d through respective dampers 16-a, 16-b, 16-c, 16-d. When detected temp. differences DELTATa=-0.5 deg.C, DELTATb=DELTATc=DELTAd=-2.5 deg.C, only the damper 16-a opens 1/4 of full opening and other dampers open 3/4 of full opening and the amount of hot air is controlled and the temp. in a room 14 shows uniform distribution.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air conditioner, and particularly to a method for controlling the amount of air blown out from the air conditioner.

Conventional technology The conventional technology will be explained with reference to FIGS. 7 to 9.

1 is an indoor unit of a ceiling-embedded air conditioner, which is fixed to a ceiling wall 2 with a fixing bolt 3, and the lower surface of the indoor unit 1 is attached to the ceiling 4.
and is open on the time plane. The indoor unit 1 is composed of an outer shell 6 and a lower surface grille/L/6, and indoor heat exchangers 7-a and 7-b of the cooling system are installed inside the shell 6 and can exchange heat with each of the casings 4. Blower a-a, 8-b and blower guide 9-a.

e-b is installed. A rectangular inlet 1o is provided in the center of the lower grille 6, and around the inlet 1o are outlet grilles 11-a, 11-b, and 11-a.

11-d is provided. The air blown from the blower 8-a passes through the heat exchanger 7-a, passes through the half openings on the side of the blow-off grill 11-a of the blow-off grill 11-a and the blow-off grills 11-c and 11-d, and flows diagonally downward. Splash forward. The air blown out from the blower s-b passes through the heat exchanger 7-b, and is transferred to the air outlet A/1t-b and the air outlet A/11-(
The structure is such that the air passes through the half opening on the side of the air outlet grille 11-b of 1, 11-d and blows out obliquely downward and forward.

In addition, in order to control the direction of each blowing air, the bar 12
-a.

12-b, 12-C, and 12-d are installed.

A suction temperature sensor 13 for ON-OFF control of the cooling system is fixedly installed inside the suction port 1o.

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

Generally, the air conditioner of the present invention is installed on the ceiling of an office or store to adjust the temperature of the room 14.

At this time, the flow of the blown air is as shown in Fig. 9.
11. Air warmed by 7-b (coldness iL) is blown out from the outlet/l/11-a, 11-b, 11-c, 1
The air blows out diagonally downward from 1-d in a large arc to warm (cool) the room, and then is sucked in from the suction port 10 at the center of the indoor unit 1. At this time, each outlet airflow a and b is
The flow rate and the direction of air flow are time-wise, and the streamlines of airflows a and b both draw arcs, such as between paths.

The temperature of the air sucked in in this way is measured by the suction temperature sensor 1.
Adjust the blowing air temperature by detecting it by 3.
The average temperature in the room 14 was controlled to be approximately equal to the set temperature.

Problems that the invention aims to solve When installed in a store, office, etc., the load may be unbalanced in each part of the room due to thermal effects such as solar radiation from windows, opening and closing of doorways, and installation of other heat generating equipment. occurs. However, with conventional methods, it is impossible to detect indoor load imbalances, and even if the average indoor temperature is set at the desired setting, for example, areas near windows that receive a lot of sunlight may feel too hot or However, there was a problem in that it felt cold near the entrance and exit of the room, and that sufficient comfortable air conditioning was not provided.

Therefore, the present invention aims to solve the indoor temperature imbalance.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a suction temperature detection means provided with a plurality of ports inside the suction grill, and a temperature setting means for setting the temperature of the air discharged from the air outlet.

The structure includes a calculation means for comparing the blowout temperature and the suction temperature, and a control means for controlling the opening/closing angle of the damper attached to the blowout outlet based on the calculation result.

Operation The above means detects the temperature of each part of the room, and controls the opening area of the outlet provided inside the outlet grille based on the detected temperature and the set temperature. In other words, during heating operation, the air outlet opening is enlarged to increase the air volume to areas with a temperature lower than the set temperature, and during cooling operation, the load in the room is reduced by applying the opposite control to heating. Eliminate imbalance and obtain uniform temperature distribution.

Examples Examples of the present invention will be described below with reference to FIGS. 1 to 6. Incidentally, the explanation of those having the same structure as the conventional one will be omitted, and only the different points will be described.

Each blowout group IJA/11-a, 11-b, 11-c, 11
- Each suction temperature sensor 1 is installed inside the suction port 10 closer to d.
a-a, 1es-b, 1es-c, 1s-
d is installed.

Residue blowout Guri A/11-a, 11-b, 11-c.

Dampers 16-a and 16-b are rotatable by a stepping motor (not shown) on the windward side of 11-d.

1e-c and 1e-d are provided, and an air outlet 17-a.

The aperture ratios of 17-b, 1-arc, and 17-d are variable.

Further, each of the suction temperature sensors 15-a and 15-b.

Detection temperature Ta, Tb, Tc of 1es-c, 1s-d
, Td and the set temperature T set by the occupant, the temperature differences ITa, lTb, lTc, and lTd of each suction part are calculated by a calculation means (not shown) such as a microcomputer. Depending on the size of this temperature difference, each damper 1a-a,
The opening degrees of 16-b, 16-C, and 16-ci are controlled.

J T a v b + cr d = T a r
b y a t d T s e (Also, this temperature difference JTa, lTb, JTC, lTd and each damper 16-
The correlation between the opening degrees of a, 16-b, 16 c, and 16-d is determined by a control means such as a microcomputer (not shown) as shown in Table 1. Fully open.

As the temperature difference decreases, the opening degree decreases until JT≧
If it is 0, it is controlled so that it is fully closed. On the other hand, during cooling operation, if JT>3℃, the damper is fully opened, and as the temperature difference decreases, the opening is decreased.
If JT≦0, control is performed so that it is fully closed.

Table 1 The operation of an embodiment of the present invention configured and controlled as described above will be described.

The air sucked in from the suction port 10 is sent to the blower 8-a.

Heat exchanger by s-b? -a, 7-b, each damper 16-a, 16-b, 16-c.

16-d, air outlets 11-a, 11-b,
11-c.

It is blown out from 11-d. The air that comes out of the air outlet 11-a exchanges heat with the air or object in zone A in the chamber 14, and the air flow lines draw a large arc while reaching the air outlet 10.
The temperature detected by the suction temperature sensor 16-a, which is sucked in from the vicinity of the suction temperature sensor 15-a provided inside, can be considered to be representative of the temperature of zone A in the chamber 14. can. Similarly, suction temperature sensors 15-b and 15-b are used as representative temperatures for each zone of B, C, and D.
-c.

16-d enables detection.

As a first embodiment of the present invention, a case during heating will be described.

If the temperature distribution in the room 14 is uniform, each suction temperature sensor 15-a, 15-b, 15-c, 15-d
The detected temperatures are all the same, and each damper 1e-a, 1e-b, 1e-c, 1e-
M) The opening degree is commensurate with the temperature difference between the suction temperature and the set temperature, and both are the same opening degree. In other words, each outlet 11-a
.

The air volumes blown from 11-b, 11-c, and 11-d are almost equal.

On the other hand, as shown in A in Figure 3, the ceiling is 104, the floor is 1o5, and the wall is 1o6.
．． In the case of a room 103 consisting of a wall 107 and the like with a window 108, if there is sunlight from the window 108.

The floor surface of part A where sunlight is exposed is heated, and the air in part A is warmed. Therefore, the temperature detected by the suction temperature sensor 16-a is higher than that of the other sensors 15-b, 15-0, and 15-d. For example, if the detected temperature difference JT of each sensor is JT
a=-0.5°C; 1Tb=lTc=JTti=-2,
In the case of 5°C, only the damper 16-a is opened.

The other dampers 16-b, 16-C, and 16-d are opened by 50%, and the amount of air blown from the air outlet 11-a decreases.

For this reason, the amount of hot air flowing to the area where solar radiation is generated is controlled, and the temperature inside the room 14 can be distributed uniformly. or,@)
The window 10B is covered with a curtain 109, and a heater is installed in a part of the room.

When there is a heat load 17 such as a stove, or a window 108 like 0
Not only is there solar radiation from the wall 109 on the opposite side, but even if the door 18 is installed on the opposite wall 109 and the temperature distribution is extremely poor, such as when this door 18 is left open, a large amount of sunlight will enter the cold zone. Each damper 16-a, 16-b is configured to send a large amount of air, and a small amount of air to the warmer zone.
, 16-c.

It controls the opening degree of 16-d.

On the other hand, in the case of air conditioning, the situation is opposite to the case of (A), @, and a in Figure 3, and the zone that has become hot due to solar radiation 9 heat generation, etc.
Dampers 16-a and 16-b are used to blow out a large amount of cold air with a small amount of air toward the cooler side.

Because it controls the opening degree of 1e-c and 1e-d.

This ensures a very uniform temperature distribution throughout summer and winter, regardless of the location of the pattern, and even in rooms where variations in room temperature distribution are likely to occur due to radiation, heating, etc.

Effects of the Invention Since the present invention is configured as described above, it detects the unbalance of the indoor heat load, that is, the unevenness of the indoor temperature distribution due to sunlight, the presence or absence of a heating source, etc., and controls the air flow rate. This provides a comfortable space with good temperature distribution.

[Brief explanation of drawings]

FIG. 1 is a plan view of the air outlet of the air conditioner of the present invention. FIG. 2 is a plan view of the room showing how the air conditioner is installed. FIG. 3 is a central sectional view of FIG. 1, FIG. 4 is a sectional view of the main part thereof, FIG.
The figure is a flow line diagram of the blast air flow line taken along the line B-B in Figure 2, Figure 7 is a plan view of the outlet of a conventional air conditioner, Figure 8 is a central sectional view of Figure 7, and Figure 9 is a diagram of the FIG. 1o... Suction grill, 15-a, b, c, d.
...Suction temperature sensor, 11-a, b, c, d...
...Blowout grill, 16-a, b, c, d...
・Damper.

Claims (1)

[Claims] A suction port, an air outlet, a damper for opening and closing the air outlet, a temperature setting means for setting the temperature of air blown from the air outlet, and a plurality of units arranged inside the air inlet to detect the temperature of the intake air. temperature detection means; a calculation means for comparing the temperature detected by the temperature detection means and the temperature set by the temperature setting means; and opening/closing of the damper closest to the temperature detection means based on the calculation result of the calculation means. An air conditioner comprising a control means for controlling the angle.