JP3153217B2 - Air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to an air conditioner, and more particularly, to an air conditioner provided with a wind direction plate capable of adjusting a blowing direction and a wind speed of cooled or heated air. It relates to an air conditioner.

[Conventional technology]

Generally, a conventional air conditioner is disclosed in, for example, Japanese Patent Application Laid-Open No. 62-2762.
As disclosed in Japanese Patent Application Publication No. 59-59, a wind direction plate is provided which can selectively switch the air blowing direction between a substantially horizontal direction and a vertically downward direction. During cooling, the cool air is blown in a substantially horizontal direction, and when heating, the blown air is blown downward in a vertical direction, so that the cool air or warm air can be more effectively circulated in the room.

[Problems to be solved by the invention]

In the above-described conventional air conditioner, noise is increased when the wind speed is increased, so that the air conditioner is generally kept low. Therefore, at the time of heating, since the blowing speed of the warm air is low, the warm air rises before reaching the vicinity of the floor surface, so that the warm air does not directly hit the floor surface and it takes a considerable time for the floor surface to warm. In order to solve this problem is a constant length L _D of the air outlet of Figure 1, it is conceivable to raise the wind speed stop the outlet area by reducing the W _D of Figure 5, Increasing the air blowing speed not only increases the noise at an accelerated rate, but also makes it easier to draw in the surrounding cool air, greatly reducing the temperature of the warm air reaching the floor and making it impossible to provide soft or gentle heating. Problems arise.

Therefore, the present invention has a rapid rise in cooling and heating,
It aims to provide an air conditioner that can perform gentle cooling and heating.

[Means for solving the problem]

In order to achieve the above object, the present invention provides an air conditioner having an air discharge port that opens in the width direction below an indoor unit main body, wherein a mode for discharging air from an opening area of the air discharge port, A mode in which the discharge port discharges air from an opening narrowed in the width direction of the indoor unit main body, wherein a length of the air discharge port in the indoor unit main body width direction in the mode of discharging air from the opening region is L, When the length of the opening in the indoor unit main body width direction in the mode in which air is discharged from the opening narrowed in the unit main body width direction is 1, 1 / L is 0.4 or more and 0.8 or less.

[Action]

In the mode in which air is discharged from the opening area of the air discharge port, air can be blown out from the entire opening of the air discharge port, so that the blowout area increases. On the other hand, in the mode in which the air discharge port discharges air from the opening in which the width of the indoor unit main body is narrowed, the air is blown out from the opening in which the width of the indoor unit main body in the width direction of the air discharge port is narrow, so that the wind speed increases. For example, at the time of heating, warm air can be blown close to the floor.

〔Example〕

Hereinafter, an embodiment according to the present invention will be described. In the present embodiment, the current direction plate is turned in one direction (clockwise in the example of FIG. 8).
When the outer wind direction plate reaches the predetermined position, the outer wind direction plate hits the locking body, and the outer wind direction plate stops. In this position, the outer wind direction plate is a position for closing the opening of the air conditioner body. Therefore, air is mainly blown out only from the main wind direction plate. Therefore, when adjusting the amount of rotation of the main wind direction plate and determining the blowing direction,
Cold air or warm air is blown in a desired direction. At this time, since the opening is narrowed by the outer wind direction plate, the wind speed is high. Therefore, for example, warm air can be blown to the vicinity of the floor at the time of heating, and heating can be quickly started. Also,
The length l and width W of the main wind direction plate shown in FIG. 6 are fixed at an area A (l + w) determined by the required blowing wind speed, and by making l + w as small as possible, the effect is increased. It is clear that cooling can be done.

When the main wind direction plate is turned in the opposite direction (counterclockwise in the example of FIG. 8), the outer wind direction plate is connected to the main wind direction plate via a spring. And rotate. That is, the opening of the air conditioner body is fully opened. Therefore, by rotating by an appropriate amount, air can be blown out from the entire opening in a predetermined direction. At this time, since the blowing area is large, the wind speed is small and gentle cooling and heating can be performed.

As described above, according to the present embodiment, not only can the air blowing direction be adjusted simply by rotating the main wind direction plate, but also the wind speed can be changed without controlling the rotation speed of the fan. Therefore, cooling / heating can be performed at a rapid rise and gentle or soft cooling / heating can be performed. Moreover,
There is also an advantage that the structure can be provided simply and inexpensively, and since the structure is simple, it is possible to provide an air conditioner that has few failures and can be easily maintained and inspected.

Further, since the main wind direction plate is driven by a motor, remote control is possible. Therefore, the air conditioner can be installed at a relatively high position in the room, and there is an advantage that the room can be widely used. Further, the motor can be controlled by the microcomputer, and the operability is improved.

In practicing the present invention, it is preferable that the main wind direction plate is driven by a motor and controlled by a microcomputer. By storing the motor pulses in the storage unit of the microcomputer, the wind direction plate can be returned to the original position once set. This is also because remote control becomes possible by controlling with a microcomputer.

It is preferable that the outer wind direction plate is symmetrically surrounded by the main wind direction plate. This is because, when configured symmetrically, air flow is less turbulent, pressure loss is prevented, noise is suppressed, and the aesthetic effect of appearance is great.

In the embodiment of the present invention, a heat pump type cooling / heating device, a heater for heating, and the like are appropriately mounted on the air conditioner body.

Referring to FIG. 1, a substantially rectangular opening 10 is formed below the front surface of the air conditioner body 1, and a main wind direction plate 2 and an outer wind direction plate 3 are provided so as to close this opening. It will be understood that it is.

The main wind direction plate 2 and the outer wind direction plate 3 constituting the wind direction plate are:
Both are rotatable. Accordingly, when the main wind direction plate 2 is rotated clockwise while blowing the air only from the main wind direction plate portion while the outer wind direction plate 3 is in the closed position, the length “l” is equal to that of the outer wind direction plate 3. Since it is smaller than "L", the blowout area is small, and when the outer wind direction plate 3 and the main wind direction plate 2 are integrated and rotated counterclockwise to blow out from the full opening, the area becomes large. . A configuration example for that purpose will be described with reference to FIGS. As shown in FIG. 6, the main wind direction plate 2 has a substantially cylindrical shape. That is, a pair of front and rear plates 20, 21 and a pair of side plates 22, 23 and 22 ', 23' are formed in a rectangular tube having a horizontally long cross section, and air is hollow in the tube as shown by arrow A. Part. Shaft 2 is attached to side plates 22 'and 23'.
4, 25 are provided integrally, and by driving this shaft, the main wind direction plate 2 can rotate around its axis.

The outer wind direction plate 3 formed so as to surround the main wind direction plate 2 has a substantially U-shape as shown in FIG. 6, and the main wind direction plate 2 is accommodated therein. ing. The length "L" and the width "W" of the outer wind direction plate 3 are substantially the same as those of the opening 10 of the air conditioner main body 1, and have support plates 31, 32 on both sides. Further, through holes 33, 34 are formed in these support plates 31, 32, so that the shafts 24, 25 of the main wind direction plate 2 are inserted.

Similarly, as shown in FIG.
The support shafts 24 and 25 extend outward through the through holes 33 and 34 of the outer wind direction plate 3 and are supported by the casing of the air conditioner body. The main wind direction plate 2 and the outer wind direction plate 3 are connected by a spring 5. Therefore, when the shaft 24 is rotated, the main wind direction plate and the outer wind direction plate temporarily rotate as a unit.

FIG. 7 is a schematic view of the air conditioner main body 1 as viewed from the front. In this state, the opening 10 is substantially closed by the main wind direction plate 2 and the outer wind direction plate 3. In this state, as shown in FIG. 8 (a), a part of the outer wind direction plate 3 is in contact with the locking member 35, for example, a part of the casing. Therefore, when the main wind direction plate 2 is now rotated clockwise as shown in FIG. 8 (b), the main wind direction plate 2 contacts the upper end of the outer wind direction plate 3 against the lower end of the locking body 35. Since it touches, it separates from the external wind direction plate 3 and takes the position shown in (b). In this state, the opening 10
Is mostly closed by the outer wind direction plate 3, and air is blown out mainly from the central portion of the main wind direction plate 2 in the direction of arrow A.
Therefore, the wind speed is large and reaches far. Therefore,
This state will be referred to as “at the time of startup” of cooling / heating. Contrary to this, when the main wind direction plate 2 is rotated counterclockwise as shown in FIG.
Also rotate together. In this state, the opening 10 is fully opened, and the air is blown out in the entire width direction from the direction of arrow A, so that the wind speed is slow and gentle cooling and heating can be performed. Further rotation causes air to be blown substantially downward. The state shown in (d) of FIG. 8 will be referred to as “normal heating”.

6 to 8 are schematic diagrams for convenience of explanation, and FIGS. 3, 4, and 5 correspond to these schematic diagrams. That is, FIG. 3 shows a state in which the outer wind direction plate 3 is separated from the main wind direction plate 2 and rotated so as to be in the vertical direction within a range of 30 to 35 °. This state is "at start-up" because the wind speed is high and reaches near the floor. FIG. 4 shows that the outer wind direction plate 3 is integrated with the main wind direction plate 2 to form an opening.
Reference numeral 10 denotes a state in which the air is blown in a substantially horizontal direction while the air is being blown, indicating "at the time of cooling". FIG. 5 also shows the state of “normal heating” because it is similarly integrated and blows out substantially downward. Note that reference numeral 4 in FIGS.
Denotes a motor for driving the main wind direction plate 2, and reference numeral 6 denotes an indoor fan.

Since the present embodiment is configured as described above, there are various effects as compared with the conventional one. That is, FIG. 9 is a side view of the hot air blowing temperature of the conventional air conditioner having a low wind speed during the heating operation, as can be seen from FIG. Even on the floor even in the wind 0.
Although the distance reaches only 5 to 0.55 m, in this embodiment, at the time of “start-up”, as shown in FIG. 10, the temperature distribution at 30 ° C. reaches the floor, and even at a temperature of 35 ° C. Top 0.1
It has reached ~ 0.15m. That is, the floor is directly heated.

Also, comparing the rise time of the heating, as shown in FIG. 11, the rise time required for the outside air temperature to reach 21 ° C. at 5 ° C. was about 6 minutes in the conventional one, According to the present embodiment, it takes about three minutes to start up. That is, the time is reduced to about half.

After standing up, for example, the fifth
As shown in the figure, it is clear that it is possible to switch to gentle normal heating, so that the start-up is quickened even during cooling, and as shown in FIG. Obviously, the main wind direction plate 2 can be rotated.

Relationship between the opening ratio of this embodiment, that is, the ratio l / L of the length "l" of the main wind direction plate 2 to the length "L" of the external wind direction plate 3, the average temperature distribution of 5 cm above the floor, and the noise. Are in a relationship as shown in FIG. As is clear from the figure, the average temperature at 5 cm above the floor increases as the aperture ratio l / L decreases, but the noise tends to increase exponentially. So, for example, on the floor 5c
If you target an average temperature of 21 m or more and noise of 43 dB or less,
The opening ratio is good in the range of 0.4 to 0.8, but for safety,
In this embodiment, the aperture ratio l / L is desirably 0.65 to 0.75.

In the above embodiment, the turning operation of the main wind direction plate 2 can be performed manually or by a motor such as a step motor. Next, the main wind direction plate is driven by a motor. An embodiment in which the microcomputer is controlled by a microcomputer will be described.

According to the present embodiment, as shown in FIG. 1, the air conditioner comprises the air conditioner main body 1 and an operation remote controller 40. As shown in FIG. 13, the operation remote control 40 includes a wind direction operation button 41 for instructing driving of the wind direction plate motor 4, a temperature switching button 42 for changing a set temperature, and signals from these buttons. Receives, processes, and transmits data
And a microcomputer 43 for sending a signal to 44.

The air conditioner body 1 also includes a microcomputer 54. In addition, a reception circuit 55 for receiving a signal from the transmission circuit 44, a room temperature detector 56, and the like are also provided. Microcomputer
54 includes a control unit 59, a storage unit 60 that stores the number of pulses of the wind direction plate motor and the set temperature, the control unit 59 controls data from a receiving circuit, a room temperature detector, a storage unit, and the like, The calculated data is output to an external device such as an indoor fan motor 58, a compressor 57, a wind direction plate motor 4, and the like.

Next, the operation will be described with reference to the flowcharts shown in FIGS. First, referring to FIG.
In step S-31, inputs of the buttons 41 and 42 are monitored. If there is an input, the type of the button is determined (step S-32). If the operated button is the temperature switching button 42, a temperature signal is transmitted (step S
-33). On the other hand, when the button type is the wind direction operation button 41, a wind direction plate separation signal is transmitted (step S-3).
Four). It is programmed by the separation signal that the main wind direction plate 2 and the outer wind direction plate 3 are separated when they are not separated, and integrated when they are separated so that the original blowing angle is obtained.

On the other hand, when the power supply 35 is on (step S-51), the microcomputer of the air conditioner body 1 performs initialization of the control unit 59, clearing of the storage unit 60 for storing the number of motor pulses for the wind direction plate and the set temperature, and the like. Initialization is performed (step S-52). Next, in step S-53, the main wind direction plate 2 is
To initialize the main wind direction plate 2 and the outer wind direction plate 3 to the initial position, for example, the position shown in FIG. Next, the receiving circuit 55 is initialized (step S-54).

When the initialization is completed, the received signal is monitored through the receiving circuit 55 (step S-55). If there is a signal, the type of the signal is determined (step S-56). Checks whether the wind direction plates are separated (step S-57). If the wind direction plates are not separated, the number of pulses of the wind direction plate motor 4 is written into the storage unit 60 (step S-58). Next, the main wind direction plate 2 and the outer wind direction plate 3 are integrally rotated and driven to the positioning position (the position shown in FIG. 5) (step S-59), and further the separation position (the position shown in FIG. 3). The wind direction plate 2 is rotated so as to be at an angle of 30 to 35 degrees from the vertical direction (step S-60).

Next, the rotational speeds of the indoor fan motor and the compressor are calculated from the difference between the set temperature and the room temperature, and the indoor fan motor 58 and the compressor 57 are calculated.
Is issued (steps S-61, 62).

The calculation of the rotation speeds of the indoor fan motor 58 and the compressor 57 uses, for example, the following control table.

If the wind direction plate separation signal is received while the main wind direction plate 2 and the outer wind direction plate 3 are already separated, it is not at the time of startup, so that the indoor fan motor 58 and the compressor 57 return to normal operation. (Step S-63). Next, the wind direction plate is rotated to the positioning position (FIG. 5) (step S-6).
4) The pulse of the wind direction plate motor stored in the storage unit 60 before the wind direction plate separation is read (step S-65), and a command is given to the wind direction plate motor 4 (step S-66).

On the other hand, when the type of the signal is a temperature signal, the set temperature of the storage unit 60 is also changed (step S-67), and the operation is performed so that the normal operation is performed (step S-68).

As described above, when the operation remote controller 40 is used, the user simply presses the wind direction operation button 41, and when the wind direction plate is not separated, the main wind direction plate 2 and the outer wind direction plate 3 are separated, and when the wind direction plate is already separated, it is integrated. Thus, the original air discharge direction is obtained, and the usability is improved.

At the time of separation, the peripheral portion of the opening 10 is closed by the outer wind direction plate 3, and most of the air volume is discharged from the main wind direction plate 2, while at the time of integration, it is discharged from the entire opening.

〔effect〕

As described above, according to the present invention, there is an effect that an air conditioner that can start up quickly at the time of cooling / heating and can perform gentle cooling / heating is provided.

[Brief description of the drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a perspective view of an air conditioner main body and an operation remote controller, FIG. 2 is an enlarged front view showing a part of FIG. 3 to 5 are side views showing the wind direction plate portion, and are side views showing different states, respectively. FIGS. 6 to 8 are schematic views for explaining the structure of the wind direction plate, and FIG. FIG. 7 is a front view showing an assembled state, and FIGS. 8A to 8D are sectional views corresponding to a view taken along a section XX in FIG. FIG. 9 is a temperature distribution diagram showing a blowout temperature distribution of a conventional air conditioner, FIG. 10 is a temperature distribution diagram showing characteristics of the present embodiment, FIG. 11 is a graph showing rising characteristics at the time of heating a floor surface of 5 cm, FIG. 12 is a graph showing the relationship between the average temperature of the floor 5 cm and the aperture ratio for noise, FIG. 13 is a control block diagram showing another embodiment of the present invention, and FIG. The figure is a flowchart of the operation remote controller, and FIG. 15 is a flowchart showing the operation of the air conditioner main body. DESCRIPTION OF SYMBOLS 1 ... Air conditioner main body, 2 ... Main wind direction plate, 3 ... External wind direction plate, 4 ... Motor for wind direction plate, 5 ... Spring, 10 ...
…Aperture.

Continuation of the front page (72) Inventor Norio Takahashi 800 Tomita, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture Inside the Tochigi Plant, Hitachi, Ltd. (JP, U) Japanese Utility Model Showa 55-17184 (JP, U)

Claims (1)

(57) [Claims] 1. An air conditioner having an air discharge port that opens in a width direction below an indoor unit main body, wherein a mode in which air is discharged from an opening area of the air discharge port, wherein the air discharge port is provided in the indoor unit main body. A mode for discharging air from an opening narrowed in the width direction, wherein the length of the air discharge port in the width direction of the indoor unit body in the mode for discharging air from the opening area is L, and the length of the air discharge port is narrowed in the width direction of the indoor unit body. An air conditioner in which 1 / L is 0.4 or more and 0.8 or less, where the length of the opening in the width direction of the indoor unit in the mode in which air is discharged from the opened opening is 1.