JPH04116330A - Air conditioner - Google Patents

Abstract

PURPOSE:To establish comfort able air flow control by providing opening/closing control means which successively closes each blow-off outlet from the lower temperature in cooling operation but from the upper temperature in heating operation as room temperature approaches set temperature. CONSTITUTION:Once cooling operation is selected and room temperature is lowered following the cooling operation and approaches set temperature Ts, blow-off outlets 12-15 are operated from a state where all outlets are opened to states where the lower blow-off outlet 12, then lower side part blow-off outlet 13, and further upper side part blow-off outlet 14 are successively closed and finally only the upper blow-off outlet 15 is opened. In synchronism therewith, operation frequency of a compressor 1 is also lowered successively and is interrupted, and also the numbers of revolutions of turbo fans 9, 10 are lowered to reduce the supply amount of air successively. Contrarily, when heating operation is selected, the room temperature Ta is raised, and it approaches the set temperature Ts, the blow-off outlets 12-15 are operated from the state where all outlets are opened to states where all outlets are opened to states where the upper side blow-off outlet 15, upper side blow-off outlet 14, and lower side blow-off outlet 13 are closed successively and only the lower blow-off outlet 12 is opened. In synchronism therewith, the operation frequency of the compressor 21 and the supply amount of air are also reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates to an air conditioner, and particularly to an air conditioner that can perform comfortable airflow control.

(Prior Art) In conventional air conditioners, especially wall-mounted air conditioners, an air outlet is formed at one location in the upper or lower part of the air conditioner.
From there, either cold or warm air is blown out.

There are also types that have air outlets at two locations, upper and lower, to blow out cold air and hot air separately, or to blow out cold air and hot air at the same time.

(Problems to be Solved by the Invention) However, in all conventional air conditioners, the position of the air outlet is fixed, and the air outlet is not controlled. For this reason, conventional air conditioners are still insufficient in providing comfortable airflow, and improvements in comfort are desired.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an air conditioner that allows comfortable airflow control.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the air conditioner of the present invention has two parts, an upper part, a lower part and a lower part of the air conditioner main body which is attached to an indoor wall. Air outlets are formed on each side, and an opening/closing mechanism is provided to open and close these outlets independently of each other, and the opening/closing mechanism is operated to maintain each outlet at room temperature or the set temperature during cooling operation. The device is equipped with an opening/closing control means that closes sequentially from the bottom as the temperature approaches, and during heating operation, closes sequentially from the top as the temperature approaches the room temperature or the set temperature.

(Function) Air outlets are formed in the upper part, upper side part, lower part, and lower side part of the air conditioner main body, and these air outlets L1 are closed sequentially from the bottom as the room temperature or the set temperature approaches during cooling, and from the top during heating. In other words, it is possible to follow the progress of cooling/heating operation and create comfortable airflow as appropriate.

(Example) Hereinafter, one example of the present invention will be described based on the accompanying drawings.

FIG. 1 shows a separate type heat pump type air conditioner. This air conditioner has a refrigeration cycle in which a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an expansion valve 4, and an indoor heat exchanger 5 are connected in order through a connecting pipe 6, and each of these devices is connected to the outdoor. It is distributed indoors and installed as a unit.

As shown in FIG. 2, the indoor units 1 to 7 installed indoors are of a wall-hung type, and have a vertically elongated structure so that they can be accommodated (or hung) particularly on a side wall.

A front panel 8 is provided on the front of each of the indoor units 1 to 7, and an indoor heat exchanger 5 is provided behind the panel 8. At the rear of the indoor heat exchanger 5, two further turbo fans 9, 1o are provided vertically, each with an independent ventilation passage, and these fans 9. ]0 respectively have fan motors 1. ．． 11 are connected.

Then, the lower part, lower side, and upper part of indoor unit 1 to 7.

The side part and the second part each have a lower air outlet 12 corresponding to the turbo fan]0. lower side blow-off IT] 13, and upper side blow-off IT 14 corresponding to the turbo fan 9. Upper air outlet 1
5 are formed, and an opening/closing mechanism 16 (see FIG. 1) is provided inside each outlet 12 to 5 to open and close the outlet.

With the above configuration, indoor air is sucked into the indoor units I to 7 from the suction port of the front panel 8, and after being heat exchanged by the heat exchanger 5,
0 in its radial direction. Then, the heat-exchanged cold air or hot air is blown out from the air blowers 112 to 15.

In the air conditioner of this embodiment, as shown in FIG. 1, there is also a setting device 22 for selecting the desired temperature and various types of operation, etc., and a setting device 22 for detecting the indoor temperature (indoor temperature).
a sensor 23; a temperature difference detection means 24 that receives the output of the Ta sensor 23 and compares the set temperature Ts set by the setting device 22 with the room temperature Ta and detects the deviation; Based on the room temperature and set temperature difference (Ta-Ts) determined in the above compressor 1. Turbo fan9. ] 0 rotation speed and a control unit 18 that controls the opening/closing state of the air outlet 12 to ]5.

ing.

The control unit 18 controls the opening/closing mechanism 16 to open each air outlet n1.
, one opening/closing control means for varying the opening/closing states of 2 to 15, one inverter control means 20 for controlling the inverter device 17 to vary the operating frequency of the compressor 1, and a fan control for controlling the motor 11 to vary the amount of air blown. It consists of means 21. Each of the control means 19 to 21 has a pattern for various operations such as cooling, heating, dehumidification, and trough l-less control, and when a desired operation is selected by the setting device 22, the corresponding operation is performed. A pattern is selected, and a control amount can be determined according to the temperature difference ('Fa-Ts) on the selected pattern.

For example, when cooling operation is selected, the pattern shown in Fig. 3 is selected, and each suction port 1 is selected on that pattern.
The opening/closing states of the compressors 2 to 15, the operating frequency of the compressor 1, and the rotational speed of the turbo fans 9 and 10 are controlled, respectively.

That is, as the cooling operation progresses, when the room temperature Ta decreases and approaches the set temperature '1'S, the air outlet 12-1
5, as shown in FIG. 3(a), from the state where they are all open (zone d), first the lower air outlet 12 (zone e), then the lower air outlet 13 (zone f). , further -J two side blow-offs D 1 /1 are closed in order (zone g), and finally only the two-part blow-off ``115'' is open (zone h, 1). do,
The operating frequency of the compressor 1 is also A as shown in FIG. 3(b).
, B, CD (Hz), and finally stopped.

In addition, the rotational speed of the turbo fans 9 and 10 is also reduced.
As shown in Figure (C), the amount of air blown is reduced to 7 breezes.

In this way, when starting the cooling operation, the air outlet 12
By keeping all of J5 open and closing them sequentially from the bottom as the difference between 'I''a and Ts decreases, cold air is blown out from all the air outlets 1-2 to 15 in zones where the cooling load is large. In addition, in zones where the cooling load is low, the rotational speed of the compressor 1 and fans 9 and 10 may be reduced, or even in this case, the upper air outlet 15 may be opened. By being curved, it is possible to create an airflow that is comfortable for the human body.

In this way, the comfort of the living space is improved.

On the other hand, contrary to the above, when the room temperature Ta rises during cooling operation and the difference from the set temperature 'f''S becomes large, only the upper air outlet 15 is opened as shown in Fig. 3(a). Open state (
From zone h71), first 42 side blowout [''14? (
zone f), then lower side blowout] 13 is (zone e),
Further, the lower air outlets 12 (zone d) are opened in order, and all the air outlets 12 to 15 are opened. Then, in synchronization with this, the operating frequency of compressor 1, D, C,
BA, (HZ), and the air flow rate is increased in the order of ultra-breeze, breeze, and breeze (→) weak breeze, and is controlled to maintain the room temperature 1゛a at the set temperature Ts.

FIG. 4 shows an example of control when heating operation is selected. Next, this control will be described.

When heating operation starts, the room temperature "I"'a rises to the set temperature' [As it approaches S, the air blows out:] 1.2
As shown in FIG. 4(a), from the fully open state, the second part outlet 15, the upper part outlet 14, and the lower part outlet 13 are closed in order, and the lower part There is only one product with only outlet 1.2 open. In synchronization with this, the operating frequency and air flow rate of the compressor 1 are also controlled to decrease as shown in FIGS. 4(b), 4(c), and 4(d), respectively.

In this way, when starting up during heating operation, the air outlet L]1
A comfortable air flow control 1 to 1 can be performed by keeping all of 2 to 15 open and closing them one after the other as the room temperature approaches 1 or Ts, contrary to the case of cooling as described above. .

In addition, during heating operation, if the room temperature Ta decreases and the difference from T S becomes large, as shown in Fig. 11(a), from the state where only the lower air outlet 12 is open, the lower air outlet 12 is opened. 13,
The upper air outlet] 4 and the upper air outlet] 5 are opened in this order, until all of them are open. Then, the operating frequency and air flow rate of the compressor 1 are increased according to FIG. 4(b) and FIGS. 1(c) and (d), respectively.

FIG. 5 shows an example of control when the trough 1 retracting position is selected during heating operation.

Trough-less control is a control that prevents cold air or hot air from being directed directly at the human body.
I], the opening and closing states of 2 to 15 are now controlled according to the fifth country.

That is, during heating operation, when one of the trough 1 to trough positions is selected using the setting device 22, as the room temperature Ta rises and approaches the set temperature Ts, the lower air outlet changes from a state in which all of the air outlets 12 to 15 are open. 12 and the lower outlet 13 are closed in this order, and the upper outlet 4 and the upper outlet 15 are opened.

When the room temperature 'Fa decreases and the difference from the set temperature Ts becomes large, contrary to the above, the lower air outlet 13 and the lower air outlet L112 are opened in this order, and all the air outlets are opened. 12
~15 will be open.

In this way, by controlling the opening and closing of the air outlets 12 to 15, as the room temperature Ta approaches the set temperature 'I'S, it is possible to prevent air from blowing directly onto people. This control can be used depending on each person's preference, and it improves the expandability of the control.

Although not described in the above embodiment, when the dehumidifying operation is selected, the operating frequency of the compressor 1 may be deviated from the control based on the cooling operation pattern. In addition, in the second embodiment, an example using two turbo fans has been described, but at least one turbo fan is sufficient, and the number can be selected as required.

[Effects of the Invention 1] In short, according to the present invention, the upper part of the air conditioner main body,
Air outlets are provided in each of the upper, lower, and lower parts, and these outlets are independently controlled to open and close based on the difference between the room temperature and the set temperature, allowing airflow control that is comfortable for the human body. Can be done for comfort
It is possible to achieve F.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram showing an embodiment of an air conditioner according to the present invention, and Fig. 2 is a diagram showing an indoor unit l~ of the air conditioner according to the embodiment. (a) is a partially cutaway diagram. pressure surface diagram, (b
) is a side sectional view, and Figure 3 is a diagram showing an overview of the control during cooling operation, where (a) shows the opening/closing control of the air outlet, (b) shows the operating frequency control of the compressor, and fc) shows the fan control. FIG. 4 is a diagram showing an outline of control during heating operation, and FIG. 5 is a diagram showing opening/closing control of the air outlet when performing door-to-door control during heating operation. In the diagram, 7 goes to indoor unit 1 (air conditioner body) 12-1
5 is an air outlet,] 6 is an opening/closing mechanism, 18 is a control section, 1 is an opening/closing control means, 20 is an inverter control means, 21 is a fan control means, 22 is a setting device, 23 is a T'a sensor, 24
is the temperature difference detection means, Ta is the room temperature, and Ts is the set temperature.

Claims (1)

[Claims] 1. Air outlets are formed at the top, upper side, lower part, and lower side of the air conditioner body that is attached to the indoor wall,
An opening/closing mechanism that opens and closes these outlets independently of each other is provided, and the opening/closing mechanism is operated to close the above-mentioned outlets sequentially from the bottom as the room temperature approaches the set temperature during cooling operation, and when the room temperature approaches the set temperature during heating operation. An air conditioner characterized by being provided with an opening/closing control means that closes sequentially from above as the set temperature approaches.