JPH04158146A - Air conditioner - Google Patents

Abstract

PURPOSE:To obtain an automatic comfortable control of the air by providing a control means in a controller to reduce wind speed of a fan and to control a wind shifter when a difference between set temperature and room temperature falls in a prescribed range. CONSTITUTION:At a time of cooling operation or dehumidifying operation, when an operation switch 21 is pushed by a user, a display 17 in a display part 18 is lighted to indicate the pushing of the switch 21 and at the same time, wind speed of a fan 7 is reduced lower than a set wind speed. Then, if room temperature reaches a set value, the control means weakens the wind speed of the fan 7 so that the fan 7 can provide swinging wind. Further the control means orients horizontal vanes 12 and 13 of a wind shifter 11 into the horizontal direction so that the user who usually is in the central part of a room does not receive wind directly. Thus, the user is protected from being overcooled by cool wind.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to an air conditioner.

(b) Conventional technology The conventional technology for this type of air conditioner is
There is an air conditioner described in Publication No. 5264, and this air conditioner includes an indoor unit having a heat exchanger and a blower, a wind direction changing device installed at the outlet of this indoor unit, and a wind direction that can be set horizontally or It is equipped with a selection switch for controlling diagonally downward.

(c) Problems to be Solved by the Invention In the air conditioner described above, the user had to press the selection switch himself/herself when desired, which was troublesome. Moreover, since the selection switch does not control the blower, it cannot be said to be a comfortable control.

Further, in a digital air conditioner, once the wind direction and wind speed are set at the start of operation, the settings are generally maintained as they are until the settings are changed. In such an air conditioner, immediately after starting operation, the direction is such that the cold or warm air hits the user directly.
In addition, the air conditioner is operated with strong wind speed to increase the cooling or heating capacity, but if such control is maintained, the cold air may cause the body to become too cold, or the warm air may cause the throat, eyes, mouth, lips, etc. to become too dry. This was not comfortable for the user.

The present invention provides an air conditioner that automatically performs comfortable control.

(d) Means for Solving the Problems This invention provides an indoor unit having a heat exchanger, a blower, and a wind direction changing device provided at an air outlet, a temperature detector for detecting indoor temperature, and a setting device for setting indoor temperature. and a controller that controls the blower based on the difference between the set temperature and the indoor temperature, the controller has a controller that controls the fan when the difference between the set temperature and the indoor temperature is within a predetermined range. A control means for reducing the wind speed of the blower and controlling the wind direction changing device is provided.

(1) In this air conditioner, the control means of the controller reduces the wind speed of the blower when the difference between the set temperature and the indoor temperature falls within a predetermined range, and also controls the wind direction changing device to Controls the blowing direction.

Kuhe) Example An embodiment of this invention will be described based on the drawings.

In the figure, (1) is a housing of an indoor unit (50) of a separate air conditioner, which is attached to an indoor wall by an installation plate (2). This housing consists of an exterior case (3),
It consists of a front panel (4) attached to this case. Reference numeral (5) denotes a suction grill rotatably attached to this front panel, and a suction port (6) is formed in this suction grill. (7) is a blower that can be stored in the exterior case (3), (8) is a heat exchanger on the indoor side, (9)
is a drain pan located below this heat exchanger.

(10) is an air outlet formed below the housing (50);
1) is a wind direction changing device provided at this outlet, and this wind direction changing device includes two horizontal blades (12) and (13) and a motor (not shown) for driving the horizontal blades. There is. Note that a temperature sensor provided upstream of the air filter and the heat exchanger (8) is not shown.

(14) is a temperature setting device that sets the indoor temperature, and this temperature setting device is installed, for example, in a wireless remote control (I5). (16) indicates when the indoor temperature reaches the set temperature [set temperature and indoor When the difference from the temperature is O], the blower (7)
and a controller (5) to control the wind direction changing device (11).
3), this control means is located in the indoor unit (50), and when the operation switch (21) of the wireless remote control (15) is pressed, and when this switch is pressed. The display (17) indicating
8> is activated only when the light is on, and this control means is comprised of, for example, a microcomputer. (19) is an indoor temperature detector provided in this wireless remote control (15), and (20) is an operation switch. Note that (51) is a setting switch for setting operating conditions such as cooling, heating, dehumidification, automatic operation, etc., and is provided inside the lid (52).

The control means (16) performs different controls depending on whether it is in a cooling or dehumidifying operation or in a heating operation.

Control of the control means (16) during cooling operation or dehumidification operation is as follows:
The wind speed of the blower (7) is lowered, and the wind direction changing device (11
) to control the direction of the blown air. To explain more specifically, the blower (7
) is to reduce the wind speed to a slightly weaker wind speed than the set wind speed, and to reduce the wind speed within this range, for example, 6.
The wind direction changing device (11) can be controlled by moving the horizontal blades (12) and (13) in the direction of ■ (horizontal direction, see Figure 3). ] to prevent cold air from directly hitting the user.

The control means (16) during heating operation includes a wind direction changing device (1
1) is controlled as described below. Wind direction change device (1
The control in 1) moves the horizontal blades (12) and (13) in the direction of ■.
downward direction] for 30 minutes, then in the ■ direction [diagonally downward direction, third
(see figure) for 5 minutes to prevent too much hot air from hitting the users in the center of the room, and to keep the temperature distribution within the room even.

Although not shown, the indoor unit (50) is connected to the outdoor unit through a refrigerant pipe. This outdoor unit includes an outdoor heat exchanger, a blower, a variable capacity compressor, and the like.

The air conditioner configured as described above operates as follows during cooling operation or dehumidification operation.

First, when the operation switch (21) is pressed at the user's request, the display (17) indicating that the switch (21) has been pressed lights up on the display section (18), and the blower (7) is a wind speed that is slightly lower than the set wind speed at that time (hereinafter referred to as quiet operation).

When the indoor temperature reaches the set temperature, the control means (1
6) slightly weakens the wind speed of the blower (7), and
Let the air flow fluctuate. This control means (16) also controls the horizontal blades (12) and (13) of the wind direction changing device (11).
direction to prevent cold air from directly hitting users who are often in the center of the room. Therefore, the user is prevented from becoming too cold due to the cold air.

In addition, during heating operation, the operation is as follows.

When the operation switch (21) is pressed in accordance with the user's wishes, the display (17) lights up and the blower (7) operates quietly at a slightly lower wind speed than the set wind speed at that time.

When the indoor operation reaches the set temperature, the control means (1
6) is the horizontal blade (12) (1) of the wind direction changing device (11).
3) for 30 minutes in the direction of ■ and for 5 minutes in the direction of ■, and repeat this to prevent too much hot air from directly hitting the users in the center of the room. In addition, the direction of air flow is changed to appropriately agitate the air in the room so that the temperature distribution in the room is not uneven. This prevents the user's throat, eyes, mouth, lips, etc. from becoming too dry due to the hot air.

In addition, in this air conditioner, the control means (16) was explained as an example in which it operates when the indoor temperature reaches the set temperature.
The control means (16) may be configured to operate when the indoor temperature approaches the set temperature, for example, the control means may be configured to operate when the indoor temperature is within 3°C of the set temperature, or the control means may be configured to operate when the indoor temperature approaches the set temperature. A configuration may be adopted in which the control means operates when the frequency becomes 30 Hz or less.

(G) As described in detail, according to the present invention, when the indoor temperature reaches the set temperature or approaches the set temperature, the control means controls the blower and the wind direction changing device. This makes it possible to prevent the temperature-controlled air from directly hitting the user, and automatically provides comfortable control to the air conditioner so that the user does not become too cold due to cold air or dry out his/her throat due to warm air. can be made to do so.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an air conditioner showing an embodiment of the present invention, FIG. 2 is a block diagram showing the control of the air conditioner, FIG. 3 is an explanatory diagram showing the air blowing direction of the air conditioner, and FIG. Figure 4 is a plan view showing the wireless remote control of the air conditioner;
FIG. 5 is a flowchart showing the operation of the air conditioner. (7)...Blower, (8)...Heat exchanger, (1
0)...Air outlet, (11)...Wind direction changing device,
(14)...Temperature setting device, (16)...Control means, (19)...Indoor temperature detector, (21)...
Operation switch, (50)... Indoor unit, (5
3)...control device. Figure 1 Figure 2 Figure 4 Figure 5

Claims (1)

[Claims] (1) An indoor unit that has a heat exchanger, a blower, and a wind direction changing device installed at the air outlet, a temperature detector that detects the indoor temperature, a setting device that sets the indoor temperature, and a change between the set temperature and the indoor temperature. In the air conditioner, the controller is configured to reduce the wind speed of the blower and the wind direction when the difference between the set temperature and the indoor temperature falls within a predetermined range. An air conditioner comprising a control means for controlling a change device.