JPH0452443A - Controlling method for air-flow guide plate on air-conditioner - Google Patents

Abstract

PURPOSE:To make fully warm surroundings at person's feet when heating operation begins to be started, by a method wherein in the case where warm air obtained in a refrigeration cycle is blown into a room, the warm air is blown downward until a temperature difference between a preset temperature and room temperature reaches a specified temperature, and the warm air is obliquely blown when the temperature difference reaches the specified temperature. CONSTITUTION:When heating operation is restarted after air-conditioning, it is decided by a control part 5 for air-flow guide plates whether a room temperature Tr by a detected signal from a room temperature-detecting device 1 is at a specified value T1, e.g. 5 deg.C or higher. When the inside of a room is not made extremely cold and the room temperature Tr is a 5 deg.C or higher, a timer 4 is preset at ten minutes, and when the inside thereof is made extremely cold and the room temperature Tr is below 5 deg.C, the timer 4 is preset at twenty minutes. After the timer 4 is preset, both of an upper air-flow guide plate 6 and a lower air-flow guide plate 7 are set downward almost in vertical direction by a driving part 3 therefor. In this way, since the warm air blown through an indoor machine flows downward, it warms the surroundings of a person's feet.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a heat pump type air conditioner, and more particularly to a method for controlling a wind direction plate of an air conditioner to make the indoor environment more comfortable during heating operation. It is.

[Conventional Example] Conventionally, in this type of heat pump type air conditioner, the indoor unit is installed on a wall near the ceiling, as shown in FIG. 5, for example. At the start of heating operation, the wind direction plate provided at the outlet of the indoor unit is oriented in a substantially vertical direction so that the indoor unit can be heated from the ground up, and the air from the indoor fan is blown downward. At this time, the set temperature room (Ts)
Until the temperature difference between and indoor temperature (Tr) reaches a predetermined temperature,
For example, if the indoor temperature (Tr) is (set temperature (Ts) -4℃)
The wind deflector is oriented downward until Thereafter, when the indoor temperature (Tr) becomes equal to or higher than (set temperature (Ts) - 4°C), the wind direction plate is tilted in an oblique direction.

In this way, since the floor and walls are usually cold at the start of heating operation, the feet are warmed first, and the entire room is heated when the temperature difference reaches a predetermined temperature.

[Problems to be Solved by the Invention] However, in the above method for controlling the wind direction plate of an air conditioner, the judgment condition for changing the direction of the wind direction plate is the set temperature (
T8) and the indoor temperature (Tr), so when the indoor temperature (Tr) at the time of starting the heating operation is extremely low, for example 5°C or less, the direction of the air outlet may be changed before the feet are sufficiently warmed. Since the heater was oriented diagonally, there was a problem in that the indoor environment could not be maintained comfortably, especially when the heating started. That is, as shown in Fig. 5, the indoor unit of the air conditioner is installed near the ceiling, and the indoor unit is equipped with a room temperature detector 1 that detects the indoor temperature (Tr), and the indoor unit is installed near the ceiling from the foot. This is because the temperature of nearby areas becomes higher.

This invention was made in view of the above-mentioned problem, and its purpose is to be able to sufficiently warm the feet at the start of heating operation,
To provide a method for controlling a wind direction plate of an air conditioner, which makes the indoor environment more comfortable.

[Means for Solving the Problems] In order to achieve the above object, the present invention has a refrigeration cycle including a compressor, a heat exchanger, and a four-way valve, and blows warm air obtained in this refrigeration cycle indoors. When setting the temperature (T
s) and the indoor temperature (Tr) until the temperature difference (Ts - Tr) reaches a predetermined temperature, the wind direction plate is kept in a substantially vertical direction and the warm air is blown downward, and when the temperature difference reaches the predetermined temperature, the above In the method of controlling the wind direction plate of a heat pump type air conditioner in which the wind direction plate is set in a substantially oblique direction and the hot air is blown out diagonally, if the indoor temperature (Tr) is equal to or higher than a predetermined temperature (T1) at the start of heating operation, the heating is stopped. The warm air is blown downward until t1 hours have elapsed from the start of operation, and when the indoor temperature (Tr) is below a predetermined temperature (T1), the above temperature continues to be blown until t2 (>11) hours have elapsed from the start of heating operation. The wind is blown downward, and the specified time (ti
Alternatively, when the temperature difference (T!1-Tr) reaches a predetermined temperature after tx), the hot air is blown out diagonally.

Further, in the method for controlling a wind direction plate for an air conditioner according to the present invention, the above-mentioned wind direction plate is composed of two pieces, an upper wind direction plate and a lower wind direction plate, and the two wind direction plates are not operated until the above-mentioned predetermined time has elapsed. The temperature difference (T
s-Tr) reaches a predetermined temperature, the upper wind direction plate is oriented diagonally.

[Function] With the above method, at the start of heating operation, the wind direction plate is oriented downward in a substantially vertical direction, the hot air is blown downward, and after this downward blowing time has elapsed, the set temperature and indoor temperature are When the temperature difference becomes less than a predetermined value, the hot air is blown out diagonally and switched to heating the entire room. By the way, if the indoor temperature is extremely low,
Since the downward blowing time is increased, when the hot air blowing is switched to an oblique direction, it is no longer possible that the feet are not warmed.

In addition, if the air conditioner is equipped with two upper and lower wind direction plates and has a double warm air function, the temperature difference between the set temperature and the indoor temperature after the above lower blowing time has elapsed is equal to or less than a predetermined value. , the upper wind direction plate is set to be in the diagonal direction.

In this way, when switching from blowing hot air downward to normal blowing (for example, diagonal blowing), not only the temperature difference between the set temperature (Ts) and the indoor temperature (Tr) but also the elapsed time from the start of heating operation Since the conditions have been met, indoor comfort can be improved.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4. In addition, in the figure, the same parts as in FIG. 5 are given the same reference numerals, and redundant explanation will be omitted.

In Fig. 1, this heat pump type air conditioner has a temperature setting device 2 for setting the temperature using a remote control, etc., and a temperature setting device 2 to change the blowing direction when blowing hot or cold air into the room. and the upper wind direction plate 6 shown in FIG.
and a wind direction plate drive unit 3 that drives the lower wind direction plate 7, a timer 4 for measuring a predetermined time (tl: for example, 10 minutes) and a predetermined time (t2; for example, 20 minutes) from the start of the heating operation, and the above-mentioned heating Indoor temperature at the start of operation (Tr
) after the predetermined time tY or t8 has elapsed, the wind direction plate control unit controls the orientation of the upper wind direction plate 6 and the lower wind direction plate 7 according to the temperature difference between the set temperature (T8) and the room temperature (Tr). 5 is provided. Further, the air conditioner is capable of producing double hot air by controlling its two upper and lower wind direction plates 6 and 7.

Note that double hot air can be blown in two directions, making it possible to heat the entire room more effectively.

Further, the air conditioner has a refrigeration cycle including a compressor, a heat exchanger, and a four-way valve, and is also equipped with other controllers. Further, the wind direction plate control section 5 may be a microcomputer used to control the air conditioner.

Next, a wind direction plate control method applied to the above-mentioned air conditioner will be explained with reference to the flowchart shown in FIG. 2 and the side view of the indoor unit of the air conditioner shown in FIG.

First, when heating operation of the air conditioner is started, the wind direction plate control unit 5 determines whether the indoor temperature (Tr) based on the detection signal of the room temperature detector 1 is equal to or higher than a predetermined value (T1; for example, 5°C). If the room is not extremely cold and the room temperature (Tr) is 5°C or higher, timer 4 is set to 10 minutes (step 5T2).
), the room is extremely cold, and the room temperature (T r)
If the temperature is below 5°C, the timer 4 is set to 20 minutes (step 5T3). After setting the timer 4, the wind direction plate driving unit 3 moves the upper wind direction plate 6 and the lower wind direction plate 7 to be approximately vertical. direction (step 5T).
4), L Therefore, as shown by the arrow in FIG. 3, the warm air blown from the indoor unit is directed downward, thereby warming the feet.

Next, it is determined whether or not the timer time has elapsed since the start of the heating operation (step 5T5). When the set time has elapsed, the room temperature (Tr) reaches the set temperature (T) as in the conventional case.
s) It is determined whether the temperature has reached -4°C (step 5T6), the set temperature (Ts) and the room temperature (Tr)
When the temperature difference reaches a predetermined temperature, normal control, for example, double hot air control is performed (step 5T7). One of the hot air blowing directions is set diagonally, and the other hot air blowing direction is directed downward.

In this way, the indoor temperature (Tr) at the start of heating operation
, the bottom blowing time can be changed, especially when the indoor temperature (T
r) If it is too cold, the time for lower blowing is increased. In other words, if the floor or wall surface is difficult to warm up, both the upper wind direction plate 6 and the lower wind direction plate 7 are pressed together for a long time (t2), regardless of the temperature difference between the set temperature (Ts) and the room temperature (Tr). facing downward, and then the wind direction plates 6, 7
Since the heating is controlled as usual, the floor and walls do not remain cold, the feet can be sufficiently warmed, and the indoor environment can be made more comfortable when the heating operation starts. In addition, since the air conditioner controls the two wind direction plates 6 and 7 to produce double hot air, diagonal hot air and downward hot air can be obtained, which can be used throughout one room. For example, if the indoor temperature (Tr) is lower than expected at the start of heating operation, the above predetermined time (t2
), one foot continues to be warmed, improving the sense of comfort.

In addition, although the above embodiment describes the case where the air conditioner has double warm air control, other hot air control air conditioners, such as air conditioners equipped with one wind direction plate, may also be used. , can be applied.

In this case, at the start of heating operation, if the indoor temperature (Tr) is not so low, the time for blowing warm air downward is shortened, and when the indoor temperature (Tr) is extremely low, the time for blowing hot air downward is shortened. For a long time.

After the feet are sufficiently warmed, the wind direction plate may be controlled as usual to switch to heating the entire room.

[Effects of the Invention] As explained above, according to the present invention, the blowing direction of the warm air is directed downward until a predetermined time has elapsed from the start of the heating operation, and after the predetermined time elapses, the set temperature (Ts) and the indoor temperature are adjusted. In a method for controlling an air conditioner's wind direction plate in which the hot air blows out in an oblique direction when the temperature difference between the two (Tr) reaches a predetermined temperature, the lower blowing time is changed according to the indoor temperature at the start of heating operation. As a result, when the indoor temperature is low at the start of the heating operation, the duration of the hot air being blown out can be extended to sufficiently warm the feet, making the indoor environment more comfortable. When the system switches to heating the entire room and turns off the heating, the feet are sufficiently warmed, which has the effect of maintaining a more comfortable indoor environment.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, and is a schematic partial block diagram of a heat pump type air conditioner to which the method for controlling the wind direction plate is applied, and FIG. 2 shows the operation of the method for controlling the wind direction plate for the air conditioner. Flowchart diagrams to be explained, FIGS. 3 and 4 are schematic side views of the indoor unit of the air conditioner, and FIG. 5 is a diagram illustrating the indoor temperature distribution according to the conventional method of controlling the wind direction plate of the air conditioner. In the figure, 1 is a room temperature detector, 2 is a temperature setting device, 3 is a wind direction plate drive unit, 4 is a timer, 5 is a wind direction plate control unit, 6 is an upper wind direction plate, and 7 is a lower wind direction plate. Patent Applicant Fujitsu General Co., Ltd. Representative Patent Attorney Takuya Ohara Figure 2 Figure 1

Claims (3)

[Claims] (1) It has a refrigeration cycle that includes a compressor, a heat exchanger, and a four-way valve, and when the warm air obtained from the refrigeration cycle is blown indoors, the temperature difference (T
s-Tr) until it reaches a predetermined temperature, the wind direction plate is set in a substantially vertical direction, and the warm air is blown downward, and when the temperature difference reaches a predetermined temperature, the wind direction board is set in a substantially oblique direction, and the warm air is blown out. In a method for controlling the wind direction plate of a heat pump type air conditioner that blows out diagonally, the warm air is blown downward until a predetermined time has elapsed from the start of heating operation, and after the predetermined time has elapsed, the temperature difference (Ts-
A method for controlling a wind direction plate of an air conditioner, characterized in that when the temperature of the air conditioner (Tr) reaches a predetermined temperature, the warm air is blown out diagonally. (2) The predetermined time is t_1 when the indoor temperature (Tr) is equal to or higher than the predetermined temperature (T_1) at the start of the heating operation.
If time is the indoor temperature (Tr), then the predetermined temperature (T_
1) The method for controlling a wind direction plate of an air conditioner according to claim 1, wherein the time is set to t_2 (>t_1) when the time is less than or equal to 1). (3) The wind direction plate is composed of two wind direction plates, an upper wind direction plate and a lower wind direction plate, and until the predetermined time elapses, the two wind direction plates are directed downward, and the temperature difference (
The method for controlling a wind direction plate for an air conditioner according to claim 1, wherein the upper wind direction plate is set in an oblique direction when the temperature Ts-Tr) reaches a predetermined temperature.