JPH0820101B2 - Air conditioner - Google Patents

Description

Description: [Object of the Invention] (Field of Industrial Application) The present invention relates to an air conditioner provided with a vertical wind direction grill for adjusting the direction of blown air in the vertical direction.

(Prior Art) Generally, in a heat pump type air conditioner capable of heating operation, since the indoor temperature is initially low during heating operation, the specific gravity of warm air is smaller than the specific gravity of indoor air. Receives the buoyancy and moves to the upper part of the room, and there is a problem that the bottom floor area does not warm easily.

It is conceivable to deal with this by directing the vertical grille of the air outlet to just below to forcefully blow the air below.
Then, hot air does not reach far inside the room, which causes a new problem that the entire room cannot be heated. However, it is very troublesome for the user to manually operate the up and down wind direction grill.

Therefore, there is a motor provided with a motor for rotationally driving the vertical wind direction grill so as to automatically set the blowing direction to an optimum state in accordance with a change in temperature and a lapse of time. An example is shown in FIGS. 18 to 20.

An indoor unit 1 has a suction port 2 and a blowout port 3 vertically arranged on the front surface of the indoor unit 1. In the indoor unit 1, a ventilation path formed by the heat insulating material 4 is formed from the suction port 2 to the air outlet 3. In the air passage, an indoor heat exchanger 5 is arranged near the suction port 2, and a drain pan 6 is provided below the indoor heat exchanger 5. Further, an indoor fan 7, a left / right wind direction grill 8, and a vertical wind direction grill 9 are sequentially provided in the air passage toward the air outlet 3. The left and right wind direction grills 8 are for manually adjusting the direction of the blowing air in the left and right directions, and a plurality of the left and right wind direction grills 8 are arranged along the left and right direction of the indoor unit 1. The vertical wind direction grill 9 is for automatically adjusting the direction of the blowing air in the vertical direction, has a plate shape extending in the horizontal direction of the indoor unit 1, and has a rotating shaft that is a motor (not shown).
Is connected to the rotating shaft of.

That is, when starting the heating operation, the vertical wind direction grill 9 is set to the first position.
It is set to the rotation position shown in Fig. 18 and forcedly blows out just below to warm people in the room from below. After that, when the normal operation is started, the vertical wind direction grill 9 is set to the rotating position shown in FIG. 19 and obliquely downward blowing is performed so that the warm air is spread to the far inside of the room to warm the entire room. The rotating position of the vertical wind direction grill 9 shown in FIG. 20 is for horizontal blowing for cooling.

However, the oblique downward blow (Fig. 19) has the advantage of warming the entire room, but the blowing air may directly hit people in the room and cause discomfort to people in the room. .

(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and an object of the present invention is to sufficiently warm the floor area in the room at the start of heating operation. Provide an excellent air conditioner that is capable of efficiently heating the entire room without causing discomfort to people in the room during normal operation after starting, and that can improve comfort and reliability To do.

[Structure of the Invention] (Means for Solving the Problems) The air conditioner of the present invention is rotatably provided at each of the air outlets, and is provided with the first and first air conditioners for adjusting the direction of the blown air in the vertical direction. 2 a vertical wind direction grill, a motor for rotating the first vertical wind direction grill within a horizontal blowing position and a vertical blowing position, and a turning force for moving the second vertical wind direction grill from a horizontal blowing position to a direct downward blowing position. A spring for giving, and a means for driving the motor during heating operation to set the first vertical wind direction grill first to a straight downward blowing position and then to rotate it obliquely to the downward blowing position, and the first vertical wind direction grill. Alternatively, when the first vertical wind direction grill is attached to the second vertical wind direction grill, and the first vertical wind direction grill is rotated from the horizontal blowing position to the direct downward blowing position, the second vertical wind direction is generated by the force of the spring. A member that allows rotation of the grill and causes the second vertical wind direction grill to follow the rotation of the first vertical wind direction grill by an abutting action with respect to the rotation of the first vertical wind direction grill from the oblique lower blow position to the horizontal blow position. And

(Operation) In the air conditioner of the present invention, during the heating operation, the first vertical wind direction grill is first set to the direct downward blowing position and then rotated to the oblique downward blowing position. When the first vertical wind direction grill is set to the just-below blowing position, the second vertical wind direction grill is rotated by the force of the spring and is set to the same just below blowing position. When the first vertical wind direction grill is rotated from the position directly below to the oblique downward position, the second vertical wind direction grill maintains the position directly below while receiving the force of the spring. When the first vertical wind direction grill is rotated from the oblique downward blow position to the horizontal blow position, the contact action of the members causes the second vertical wind direction grill to rotate the first vertical wind direction grill while resisting the force of the spring. To follow.

(Embodiment) A first embodiment of the present invention will be described below with reference to the drawings. However, in the drawings, the same parts as those in FIGS. 18 to 20 are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 1, FIG. 2, and FIG. 3, arms 11, 11 are provided in the outlet 3, and a vertical wind direction grill 12 is pivotally supported by these arms 11. The arm 11 is formed integrally with the front panel of the indoor unit 1, and has a shape that once extends toward the left and right wind direction grilles 8 and then bends toward the air outlet 3. The vertical wind direction grill 12 is for automatically adjusting the direction of the blowing air in the vertical direction, and has a plate shape extending in the horizontal direction of the indoor unit 1.

The up-down wind direction grill 12 is divided into a plurality of parts in the left-right direction, and includes a first up-down air direction grill, for example, a main grill 12a and a second up-down air direction grill, for example, a sub-grill 12b that are rotatably provided. The main grill 12a has a left grill 12a ₁ and a right grill 12a ₂ on both sides. The sub grill 12b is rotatably pivotally supported at a position corresponding to the longitudinal center of the main grill 12a, that is, between the left grill 12a ₁ and the right grill 12a ₂ (between the arms 11 and 11). Thus, the main grill 12a is connected to the rotating shaft of the wind direction grill motor 28 described later.

Further, one end of a spring 13 is attached to the front end edge of the sub grill 12b, and the other end of the spring 13 is attached to the arm 11. This spring 13 is the sub grill 12b
A turning force is applied from the horizontal blowing position to the position directly below. On the back surface of the sub grill 12b, a member such as L
A hook 14 having a V shape is attached. This hook 14
Left grill 12a ₁ and right grill 12a ₂ in main grill 12a
It extends to a position facing the connecting portion 12a _{3 of} the main grill 12a and does not receive the contact of the connecting portion 12a _{3 with} respect to the rotation of the main grill 12a from the horizontal blowing position to the position directly below the blowing position. Allows rotation of the sub grill 12b,
Regarding the rotation of the main grill 12a from the oblique lower blow position to the horizontal blow position, the connection portion 12a ₃ is contacted, and thereby the sub grill 12b follows the rotation of the main grill 12a.

Note that FIGS. 1 to 3 show a horizontal blowout state for cooling, and as shown in FIG. 4, the wind is blown out in the horizontal direction.

 FIG. 5 shows a control circuit.

Reference numeral 20 denotes a control unit, which includes a microcomputer and its peripheral circuits and the like, and externally has a timer circuit 21, a radiant heat temperature sensor 22, an indoor temperature sensor 23, a heat exchange temperature sensor 24, a driving operation unit 25, a fan drive circuit 26, and a wind direction. The grill drive circuit 27 and the like are connected. Here, the timer circuit 21 counts the elapsed time from the start of the heating operation. The radiant heat temperature sensor 22 detects the temperature of the wall surface on which the indoor unit 1 is attached. Indoor temperature sensor 23
Is for detecting the temperature of the indoor air sucked from the suction port 2. The heat exchange temperature sensor 24 detects the temperature of the indoor heat exchanger 5. The driving operation unit 25 includes various operation switches and the like, and supplies the driving setting data according to the operation of the user to the control unit 20. Fan drive circuit
The reference numeral 26 drives the drive motor 7M of the indoor fan 7. The wind direction grill drive circuit 27 drives the wind direction grill motor 28. The wind direction grill motor 28 rotationally drives the vertical wind direction grill 12.

Next, the operation of the above configuration will be described with reference to FIG.

The heating operation is set by the operation operating unit 25, the desired room temperature Tas is set, and the operation start operation is performed. Then, the control unit 20 turns on the operation of the compressor (not shown) and the outdoor fan (not shown), and switches the four-way valve (not shown) to form a heating cycle in the refrigeration cycle. Further, the control unit 20 detects the temperature (hereinafter referred to as heat exchange temperature) Tc of the indoor heat exchanger 5 by the heat exchange temperature sensor 24, and if the heat exchange temperature Tc becomes 32 ° C. or higher, the fan drive circuit 27. Then, the operation of the indoor fan 7 is turned on. Therefore, the indoor air is sucked into the indoor unit 1 through the suction port 2, and the sucked air passes through the indoor heat exchanger 5 that acts as a condenser, takes heat therein and is blown out into the room through the blow-out port 3. . That is, the heating operation is started.

If the heat exchange temperature Tc is in the range of 32 ° C to 40 ° C, the control unit 20 controls the speed of the indoor fan 7 to be an ultra low speed ULo or a medium speed M.
Set to. If the heat exchange temperature Tc is 40 ° C or higher, the speed of the indoor fan 7 is set to the indoor set temperature Tas and the indoor temperature sensor 2
Control is performed according to the difference (Tas−Ta) from the room temperature Ta detected in 3.

Then, the control unit 20 detects the temperature of the wall surface (hereinafter, referred to as wall surface temperature Tb) by the radiant heat temperature sensor 22 at the same time as the operation is started, and further counts the elapsed time by the timer circuit 21. Tb is the indoor set temperature Ta
If it has not yet reached the range of α with s as the upper limit, and the elapsed time from the start of operation has not yet reached the fixed time ts, the wind direction grill drive circuit 27 is given a blow-down command. Then, the wind direction grill motor 28 is operated to rotate the vertical wind direction grill 12 to the position shown in FIG. 7, and the direct downward blowing is set. In this case, first, the main grill 12a of the vertical wind direction grill 12 is rotated to the position shown by the driving force of the motor 28, and then the sub grill 12b is rotated to the position shown by the biasing force of the spring 13. Therefore, as shown in FIG. 8 and FIG. 9, warm air is blown from the indoor unit 1 toward directly below the room R, and the vicinity of the floor of the room R can be sufficiently warmed.

After that, when the wall surface temperature Tb reaches the range of α whose upper limit is the indoor set temperature Tas, the control unit 20 gives the wind direction grill drive circuit 27 a diagonal downward blow command. Then, the wind direction grill motor 28 operates to rotate the vertical wind direction grill 12 to the position shown in FIG. 10, and the oblique downward blowing is set. in this case,
The main grill 12a of the vertical wind direction grill 12 is rotated by a predetermined angle to the side of the horizontal wind direction grill 8 by receiving the driving force of the motor 28, but the sub grill 12b is biased by the spring 13 so that the sub grill 12b is rotated right below. Hold the position as it is. Therefore, as shown in FIG. 11, hot air is blown obliquely downward from both sides of the air outlet 3, and hot air is blown directly downward from the center of the air outlet 3. Thus,
As shown in FIG. 12, the warm air blown from both sides of the air outlet 3 spreads around the central portion of the room R, and the hot air blown from the central portion of the air outlet 3 reaches directly under the room R. Therefore,
It is possible to efficiently heat the entire room R without directly hitting the person in the room R, that is, without giving discomfort to the person in the room R.

In addition, when the wall surface temperature Tb does not reach the range of α and the constant time ts elapses, the control unit 20 sets the diagonal downward blowout similar to the above there. That is, this is because, in the case of a house in which the heat insulating property of the wall surface is low, the wall surface temperature Tb rises slowly and the switching of the blowing direction is delayed.

When the horizontal blowing is set from the state of the direct downward blowing or the oblique downward blowing, the main grill 12a is rotationally driven toward the left and right wind direction grilles 8 and the states shown in FIGS. 1 to 3 are obtained. In this case, the main grill 12a is rotated to the horizontal position by driving the motor, while the sub grill 12b is rotated to the horizontal position by the pressing of the hook 14 by the connecting portion 12a ₃ and the pulling of the spring 13 that acts halfway.

As described above, at the start of the heating operation, the blow-down air is set so that the hot air is blown right below the room, so that the lower portion of the room can be sufficiently warmed. Further, in the steady operation after the start, the oblique downward blowing is automatically set to blow the warm air obliquely downward, so that the entire room can be efficiently warmed. In particular, in this obliquely downward blowing, a partial downward blowing is performed at the center of the outlet 3, so that it is possible to avoid direct breeze on the person in the room, that is, to make the person in the room uncomfortable. It is possible to improve comfort and reliability without giving.

Next, a second embodiment of the present invention will be described. In this case, the same parts as those in the first embodiment are designated by the same reference numerals,
Detailed description thereof will be omitted.

As shown in FIGS. 13, 14, and 15, the arm
The up and down wind direction grill 31 is pivotally supported at 11, 11. The vertical wind direction grill 31 is for automatically adjusting the direction of the blown wind in the vertical direction. The vertical wind direction grill 31 is rotatably provided from a first vertical wind direction grill such as a main grill 31a and a second vertical wind direction grill such as a sub grill 31b. Has become. The main grill 31a includes a left grill 31a ₂ and the right grill 31a ₃ of the box-shaped on both sides of the substrate 31a ₁ extending in the lateral direction of the indoor unit 1. The sub grill 31b is rotatably supported at a position corresponding to the central portion of the main grill 31a in the longitudinal direction, and forms a ventilation space between the sub grill 31b and the substrate 31a ₁ of the main grill 31a.

One end of a spring 32 is attached to the front end edge of the sub grill 31b, and the other end of the spring 32 is attached to the arm 11. This spring 32 is a sub grill 31b.
A turning force is applied from the horizontal blowing position to the position directly below. A member such as a protrusion 33 is attached to the substrate 31a ₁ of the main grill 31a at a position facing the sub grill 31b. The protrusion 33 does not contact the sub grill 31b when the main grill 31a is rotated from the horizontal blow position to the direct lower blow position, thereby allowing the sub grill 31b to be rotated by the force of the spring 32.
Regarding the rotation of 1a from the oblique lower blow position to the horizontal blow position, the sub grill 31b is brought into contact with the sub grill 12b.
To follow the rotation of the main grill 12a.

13 to 15 show a horizontal blowout state for cooling.

Therefore, at the time of heating operation, the vertical wind direction grill 31 is initially rotated to the position shown in FIG. 16, and the direct downward blowing is set. In this case, first, the main grill 31 of the vertical wind direction grill 31
a receives the motor driving force and rotates to the position shown in the drawing, and then the sub-grill 31b receives the biasing force of the spring 32 and rotates to the position shown in the drawing. Therefore, the warm air is blown out from the indoor unit 1 to directly below the room, and the vicinity of the floor of the room can be sufficiently warmed.

After that, the vertical wind direction grill 31 is rotated to the position shown in FIG. 17, and the oblique downward blowing is set. In this case, the main grill 31a receives the motor driving force and rotates to the left and right wind direction grill 8 side by a predetermined angle, but the sub-grill 31b receives the biasing force of the spring 32, so that the sub-glow rotating position is maintained as it is. Therefore, the warm air is blown obliquely downward from both sides of the outlet 3 and the outlet 3
Warm air is blown directly downward from the center of the. Thus
The warm air blown from both sides of the air outlet 3 spreads around the central portion of the room, and the hot air blown from the central portion of the air outlet 3 reaches right under the room. Therefore, it is possible to efficiently heat the entire room without directly blowing the air on the people in the room, that is, without giving discomfort to the people in the room.

When the horizontal blowing is set from the state of the direct downward blowing or the oblique downward blowing, the main grill 31a is rotationally driven to the left and right wind direction grill 8 side, and the state shown in FIGS. 13 to 15 is obtained. In this case, the main grill 31a is rotated to the horizontal position by driving the motor, while the sub grill 31b is moved to the horizontal position by pressing the projection 33 attached to the base plate 31a ₁ of the main grill 31a and pulling the spring 32 working from the middle. Rotate to.

According to the second embodiment, like the first embodiment, the lower part of the room can be sufficiently warmed at the start of the heating operation,
Moreover, in the steady operation after the start, there is an advantage that the entire room can be efficiently heated without giving an uncomfortable feeling to a person in the room, but there is also an advantage that the air outlet 3 is cleanly designed.

In each of the above-described embodiments, the vertical wind direction grill is divided into three in the left-right direction, but the number is not limited, and may be appropriately set according to the size of the outlet 3. Also, although the direct blow down and the diagonal blow down are set only during the heating operation, they may be set during the cooling operation as well, so that it is possible to directly expose the cool air when it is hot and humid, which is convenient. is there. Further, in the first embodiment, by making the hook 14 rotatable, it is possible to perform the blow-out just below the sub grill 12b at the time of horizontal blow-out,
It is possible to finely adjust the blowing direction. Besides, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

[Advantages of the Invention] As described above, according to the present invention, the first and first vertical wind direction grills that are rotatably provided at the outlets and that adjust the direction of the blowing air in the vertical direction, respectively. 1 A motor for rotating the vertical wind direction grill in a horizontal blowing position and a vertical blowing range, a spring for giving a turning force to the second vertical wind direction grill from the horizontal blowing position to a position directly below, and driving the motor during heating operation. By doing
A means for first setting the first vertical wind direction grill to a position immediately below and then rotating it obliquely to the downward blow position, and a means for attaching the first vertical wind direction grill or the second vertical wind direction grill to the horizontal blowing of the first vertical wind direction grill. The rotation of the second vertical wind direction grille by the force of the spring is allowed for the rotation from the position to the direct downward blow position, and the contact action for the rotation of the first vertical wind direction grill from the oblique downward blow position to the horizontal blow position. Since the second vertical wind direction grill is provided with a member that follows the rotation of the first vertical wind direction grill, it is possible to sufficiently warm the floor area in the room at the start of the heating operation, and the steady state after the start. It is possible to provide an excellent air conditioner that can efficiently warm the entire room without giving discomfort to people in the room during driving, and can improve comfort and reliability.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall construction of the first embodiment of the present invention, FIG. 2 is a perspective view showing a partial construction of the vertical wind direction grill in the same embodiment, and FIG. 3 is the same embodiment. Showing the internal mechanism of the same, FIG. 4 is a view showing a horizontal blowing state of the same embodiment, FIG. 5 is a view showing a configuration of a control circuit of the same embodiment, and FIG.
The figure is a flow chart for explaining the operation of the embodiment,
FIGS. 7, 8 and 9 are views showing the blown-out state of the same embodiment, respectively, and FIGS. 10, 11, and 12 are views showing a blown-down blowout state of the same embodiment, respectively. , Thirteenth
FIG. 14 is a perspective view showing the overall constitution of the second embodiment of the present invention, FIG. 14 is a perspective view showing a partial constitution of the vertical wind direction grill in the same embodiment, and FIG. FIG. 16 is a view showing the mechanism, FIG. 16 is a view showing a blown-out state under the same embodiment,
FIG. 17 is a view showing the obliquely downward blowing state of the embodiment, FIG. 18,
19 and 20 are views showing the internal mechanism of a conventional air conditioner. 1 ... Indoor unit, 2 ... Suction port, 3 ... Blowout port, 12
...... Up and down wind direction grill, 12a …… Main grill, 12b …… Sub grill.

Claims (1)

[Claims] 1. A first and a second vertical wind direction grills, which are rotatably provided at the outlets and adjust the direction of the blown air in the vertical direction, and the first vertical wind direction grills are at a horizontal blowing position and a vertical position. A motor for rotating in the range of the blowing position, a spring for giving a turning force to the second vertical wind direction grill from a horizontal blowing position to a blow-down position just below, and by driving the motor during heating operation, 1 means for first setting the up-down wind direction grill to a position immediately below and then rotating it obliquely to the down-blowing position; and means attached to the first up-down wind direction grill or the second up-down air direction grill, Regarding the rotation from the horizontal blowing position to the position directly below, the rotation of the second vertical wind direction grill by the force of the spring is allowed,
And a member for causing the second vertical wind direction grill to follow the rotation of the first vertical wind direction grill by an abutting action for the rotation of the vertical wind direction grill from the oblique lower blow position to the horizontal blow position. Air conditioner.