JPH0587380A - Air conditioner - Google Patents

Abstract

PURPOSE:To obtain an air conditioner which can smoothly condition by a low capacity operation and improve comfortableness. CONSTITUTION:A suction port 2 and a blow-off port 3 are provided on a front surface of an indoor unit 1, and a vent passage 5 is formed of a heat insulator 4 from the port 2 to the port 3 in the unit 1. An indoor heat exchanger 6 is provided inside the port 2 in the passage 5, and an indoor fan 7, lateral grills 8 and a vertical grill 9 are provided from the exchanger 6 to the port 3. The grills 8 or 9 are fluctuated in response to the ON of a switch of a remote controller. However, when a low capacity operation such as a sound-sleep operation, a heat insulation operation, a steady operation, etc., is executed, the fluctuations of the grills 8, 9 are stopped irrespective of the ON of the switch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner provided with a grill for changing a wind direction at an outlet of a room.

[0002]

2. Description of the Related Art Generally, an air conditioner draws in indoor air by operating a fan and passes it through an indoor heat exchanger.
Furthermore, there is something that blows out indoors through the grill. In this case, the grill is rocked at the same time as the operation, and the blown air is distributed to the room to eliminate the unevenness of the room temperature.

Further, some air conditioners equipped with the above-described grille have a normal sleep operation mode, a heating operation mode, a sleep mode, a warm operation mode, a quiet operation mode, and the like. The sleep operation mode is a low-capacity operation for obtaining a soft cooling feeling or a heating feeling so as to obtain a sound sleep.

The warm operation mode is a low capacity operation in which the room temperature is kept at an appropriate temperature so that the room does not become too cold or too hot when returning home. The appropriate temperature may be a predetermined temperature outside the normal temperature range, or a temperature deviating from the set temperature in a direction of increasing or decreasing by a predetermined value (for example, 10 ° C.). The quiet operation mode is an operation in which the capacity is reduced to perform low-capacity operation or the speed of the fan is reduced in order to reduce noise.

[0005]

By the way, in the above air conditioner, it is common to move the grill even in the sleep operation, the heat retention operation, and the quiet operation.

However, the sleep operation, the warming operation, and the quiet operation are intended only for gentle air conditioning, and if the grill moves during the operation, the comfort may be deteriorated by returning.

[0007] For example, in the sleep-sleeping operation and the warm-keeping operation, the effects of cooling and heating are promoted, and the blowing air may directly hit the resident, which greatly changes the sensible temperature of the resident. In quiet operation, the noise of the motor that drives the grill itself becomes noise to the residents.

The present invention takes the above circumstances into consideration,
An object of the invention is to provide an air conditioner capable of performing mild air conditioning in low capacity operation and improving comfort.

[0009]

According to the present invention, indoor air is sucked in by operating a fan, the sucked air is passed through an indoor heat exchanger, and the air passing through the indoor heat exchanger is distributed to the room by swinging a grill. The air conditioner that blows out while having means for executing low-capacity operation with reduced capacity and means for stopping the swing of the grill during this low-capacity operation.

[0010]

[Operation] When the low capacity operation is started, the swing of the grill is stopped.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 is an indoor unit of the air conditioner of the present invention.

The indoor unit 1 has a suction port 2 and a blowout port 3 on the front surface thereof, and a heat insulating material 4 inside forms a ventilation path 5 from the suction port 2 to the blowout port 3. This ventilation path 5
In, there is an indoor heat exchanger 6 inside the suction port 2,
An indoor fan 7, a horizontal grille 8, and a vertical grille 9 are provided from the indoor heat exchanger 6 to the outlet 3.

The left-right grill 8 is a motor 8M described later.
It swings to the left and right by the drive of, and distributes the blown air to the left and right. For example, it makes one round trip in an angular range of about 50 degrees in about 20 seconds. The vertical grill 9 swings in the vertical direction by driving a motor 9M described later, and functions to distribute the blown wind in the vertical direction. The control circuit is shown in FIG.

The indoor control unit 11 of the indoor unit 1 is connected to the commercial AC power supply 20, and the outdoor control unit 31 of the outdoor unit 30 is connected to the indoor control unit 11 via a power supply line 21 and a serial signal line 22 for information transfer. Connected.
The serial signal line 22 transfers a serial signal synchronous with the power supply voltage.

The indoor control section 11 comprises a microcomputer and its peripheral circuits. In this indoor control unit 11,
Light receiving unit 12, indoor temperature sensor 13, indoor fan motor 7
M, the grill motor 8M, and the grill motor 9M are connected.

The light receiving section 12 receives an optical signal for operating condition setting from a remote control type operation device (hereinafter, abbreviated as a remote controller) 14 attached to the indoor unit 1. In addition to the keys for setting normal operating conditions, the remote controller 14 also has a swing key 15
have.

The outdoor control section 31 includes a microcomputer and its peripheral circuits, and further incorporates an inverter circuit for driving the compressor motor. This outdoor control unit 31
A compressor motor 32M, an outdoor fan motor 33M, a four-way valve 34, and an outdoor temperature sensor 35 are connected to the. The indoor control unit 11 and the outdoor control unit 31 include the following functional means.

(1) When the automatic mode is set by the remote controller 14, the operation mode (cooling, heating, dehumidifying, blowing, etc.) is set in accordance with the temperature Ta detected by the indoor temperature sensor 13 and the temperature detected by the outdoor temperature sensor 35. A functional means of automatically selecting and executing. (2) Functional means for selecting and executing a low-capacity operation such as a sleep operation, a warm operation, or a quiet operation according to the operation of the remote controller 14 during operation.

(3) During operation, the difference ΔT between the detected temperature Ta of the indoor temperature sensor 13 and the set temperature Ts of the remote controller 14 is obtained, and the output frequency of the inverter circuit for driving the compressor and the indoor temperature are calculated according to the temperature difference ΔT. Functional means for controlling the speed of the fan 7.

(4) During operation, when the swing key 15 of the remote controller 14 is turned on, the horizontal grill 8 or the vertical grill 9 is swung, and when the swing key 15 is turned off, the horizontal grill 8 and the vertical grill 9 are moved. Functional means to stop rocking.

(5) Functional means for stopping the swinging of the left-right direction grill 8 and the up-down direction grill 9 regardless of whether the swing key 15 is turned on at the time of each of the sleep operation, the warming operation, and the quiet operation. Next, the operation of the above configuration will be described.

When the automatic mode is set by the remote controller 14, the operation mode (cooling, heating, dehumidifying, blowing, etc.) is automatically selected according to the detected temperature of the indoor temperature sensor 13 and the detected temperature of the outdoor temperature sensor 35. Is executed.

During operation, the temperature T detected by the indoor temperature sensor 13
The difference ΔT between a and the set temperature Ts of the remote controller 14 is obtained, and the operating frequency of the compressor and the speed of the indoor fan 7 are controlled according to the temperature difference ΔT and the conditions set in Table 1 below. ..

[0024]

[Table 1]

For example, during the normal cooling or heating operation, if the temperature difference ΔT is within the range of 0.5 ° C. ≧ ΔT> 0 ° C.,
The operating frequency is set to 30 Hz and the indoor fan 7 is set to the low speed L. If the temperature difference ΔT is in the range of 1.0 ° C ≧ ΔT> 0.5 ° C, the operating frequency is 60 Hz and the indoor fan 7 has a medium speed M.
Is set to. Note that H represents high speed and UL represents fine speed. Then, the control shown in FIG. 4 is executed.

When the swing switch 15 of the remote controller 14 is turned on, a swing command is sent from the remote controller 14 to the indoor control section 11. Then, swinging (swing operation) of the horizontal grille 8 or the vertical grille 9 is started. Which one is to be rocked is appropriately selected according to the operation mode and the indoor temperature condition.

When the swing switch 15 of the remote controller 14 is turned off, the remote controller 14 sends a swing stop command to the indoor control section 11. Then, the left-right grill 8
Alternatively, the swing of the vertical grill 9 stops. In addition to the cooling or heating operation, a sleep operation, a heat retention operation, or a quiet operation may be executed. The sleep-driving is a low-capacity driving for obtaining a soft feeling of cooling or heating so as to obtain a good sleep.

In the warm-up operation mode, the room temperature Ta is shifted by a predetermined value, for example, 10 ° C. in the increasing or decreasing direction with respect to the set temperature Ts so that the room is neither too cold nor too hot when returning home. It is low-capacity operation to keep. The quiet operation mode is an operation in which low capacity operation with reduced capacity is performed or the speed of the indoor fan 7 is reduced in order to reduce noise.

During these low-capacity operations, the swing of the left-right grill 8 and the vertical grill 9 stops regardless of the fact that the swing key 15 is turned on. In this case, each grill stops at a predetermined reference position.

By stopping the swinging of the grill in this way, it is possible to prevent the effects of cooling and heating from being promoted in the case of a sleep operation or a warm operation, and it is also possible that the blowing air directly hits the resident. Can be prevented. Therefore, gentle air conditioning is possible and comfort can be improved. Further, since the operating noises of the grill motors 8M and 9M are eliminated, in the quiet operation, literally quiet and gentle air conditioning can be performed, and the comfort can be similarly improved.

[0031]

As described above, according to the present invention, the operation of the grill is stopped during the low capacity operation. Therefore, the air conditioner capable of gentle air conditioning during the low capacity operation to improve the comfort. Can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a main part in an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an internal configuration of an indoor unit in the embodiment.

FIG. 3 is a diagram showing a configuration of a control circuit in the embodiment.

FIG. 4 is a flowchart for explaining the operation of the embodiment.

[Explanation of symbols]

1 ... Indoor unit, 2 ... Suction port, 3 ... Air outlet, 7 ... Indoor fan, 8 ... Horizontal grill, 9 ... Vertical grill, 1
1 ... Indoor control unit, 31 ... Outdoor control unit.

Claims (1)

[Claims] 1. The indoor air is drawn in by operating a fan,
In the air conditioner, the intake air is passed through the indoor heat exchanger, and the air that has passed through the indoor heat exchanger is blown out while being distributed to the room by the swing of the grill. An air conditioner comprising: means for stopping swinging of the grill during low capacity operation.