JPH0732418U - Indoor unit for air conditioning - Google Patents

Abstract

(57) [Summary] [Purpose] In an air-conditioning indoor unit that can take in indoor air from the vicinity of a window and blow it out from the lower front when heating, to adjust the spread and direction of the blowout. did. [Structure] During heating, air is taken in through a window side heating inlet 15 of the casing 3 and passed through an internal fan coil unit 4, and hot air exchanged with heat is transferred to the casing 3
In the air conditioning indoor unit in which air is blown out from the front opening 14, the front opening 14 is provided with a rectifier louver 24 for wind direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a floor-standing type air conditioning indoor unit in which hot air is blown from the lower front surface of a casing during heating.

[0002]

[Prior art]

 Generally, an air conditioner indoor unit installed near a window has a suction opening on the front of the casing and an air outlet on the upper surface.The air taken in from the suction is brought into contact with the hot / cold water coil of the fan coil unit to exchange heat and cool it. Alternatively, after heating, the air is blown out from the outlet on the top to cool and heat the room.

[0003] This air-conditioning system, especially during cooling in the summer, counteracts the natural temperature distribution in the room in which warm air is located in the upper layer and cool air is in the lower layer, and the cold air is allowed to rise in the room as it rises. Since the forced circulation is performed, the cooling efficiency is high, and it is also preferable from the viewpoint of the sensible temperature distribution of so-called head and foot heat.

However, when heating in the winter in this method, cold and cool air is taken in from the floor side to raise warm air, so that the temperature distribution in the room becomes the same as the upper and lower temperatures, and the feet do not get warm forever. However, only the upper body side becomes warm, which is not preferable in terms of sensible temperature distribution.

Therefore, if a structure is adopted in which air is taken in from the upper side and is blown to the floor side during heating, the hot air blows directly to the feet, so the thermal environment is improved.

[0006]

[Problems to be solved by the device]

 However, the amount of air blown out is determined by the capacity of the unit, and it is difficult to control the wind direction. It was difficult to obtain a uniform feeling of comfort even in the same room where the wind touched and the part that was not touched.

This invention solves the above problems, and the purpose thereof is to take in the air in the room from the vicinity of the window and to blow it out from the lower part of the front during heating. It is intended to provide an indoor unit for air conditioning, which can adjust the spread and direction of blowout.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention takes in air from the vicinity of a window of a casing during heating and allows it to pass through an internal fan coil unit to blow out heat-exchanged warm air from a front opening of the casing. In the air conditioning indoor unit described above, a rectifier louver for the wind direction is provided at the front opening.

Further, the louver includes a rotary shaft arranged in parallel with the front opening, a number of guide fins attached to the rotary shaft at an equal inclination angle, and a motor for rotationally driving the rotary shaft. It is also possible to adopt a structure provided with.

[0010]

[Action]

 According to the above configuration, the louver provided at the front opening can adjust the diffusion range of warm air during heating.

In the case of the structure of claim 2, the inclination angle of the fin with respect to the front opening is sequentially changed, and the wind direction is variably adjusted according to the change of the inclination angle.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the internal structure of a floor-standing type air conditioner indoor unit according to the first embodiment of the present invention, and FIG. 2 is a partial side sectional view thereof. The present embodiment is basically divided and formed in a casing 3 having a fan coil unit 4, and passes through the inlet 5a and the outlet 8a of the fan coil unit 4 from the vicinity of the window 1a and the upper portion of the casing 3, respectively. And the first and second air flow paths 11 and 10 extended to the vicinity of the floor 2 and the intake port for heating which is opened near the window 1a of the casing 3 and communicates with the first air flow path 11 15, a front opening 14 for both heating blowout and cooling suction, which is opened near the floor 2 of the casing 3 and communicates with the second air passage 10 and the suction port 5a of the fan coil unit 4, and the casing 3 A cooling outlet 12 that is opened on the upper surface and communicates with the second air passage 10, and a cooling outlet 12 that is provided to selectively open and close the cooling air outlet 12 and the second air passage 10. First damper 16 and fan A second damper 17 provided to selectively open and close the first air flow path 11 and the front opening 14 in the suction port 5a of the ill unit 4, a heating suction port 15, and a front opening 14. And the interlocking shaft 20 as an interlocking switching mechanism that interlocks the first and second dampers 16 and 17 to selectively switch the communication between the front opening 14 and the cooling outlet 12. Composed.

The indoor unit in the figure is installed on the floor 2 in the vicinity of the outer wall 1 of the indoor R, and the window 1a is provided on the upper portion of the outer wall 1.

The indoor unit is one in which a fan coil unit 4 is built in the inside of a box-shaped casing 3 that is installed in contact with the wall surface at the bottom of the window 1a. In the fan coil unit 4, a filter 6, a cold / hot water coil 7 for heat exchange, which communicates with an outdoor unit (not shown) via a pipe, and a fan 8 are arranged in order from the front inside a partition wall 5 having an opening at the lower front. The drain pan 9 is arranged below the cold / hot water coil 7, the lower opening of the partition wall 5 serves as the suction port 5a of the fan coil unit 4, and the outlet 8a of the fan 8 is exposed above the partition wall 5. ing. An inverted L-shaped second air passage 10 is formed between the upper and front surfaces of the fan coil unit 4 and the casing 3, and between the lower portion of the fan coil unit 4 and the rear and bottom surfaces of the casing 3. An L-shaped first air passage 11 is formed.

On the other hand, a cooling outlet 12 communicating with the second air passage 10 is opened on the upper surface of the casing 3, and the second air passage 10 and the fan coil are provided on the lower front surface of the casing 3. A front opening 14 that communicates with both the suction ports 5a of the unit 4 is formed, and a heating suction port 15 that communicates with the first air passage 11 is formed on the upper rear surface of the casing 3. The front opening 14 serves both as a cooling inlet and a heating outlet, and its lower edge is substantially flush with the free access floor 2a arranged on the floor 2.

In the second air flow path 10, a first damper 16 is arranged near the cooling outlet 12, and a second damper 16 is arranged near the suction port 5a of the fan coil unit 4. 17 are arranged. The first damper 16 opens and closes the air outlet 12 during cooling, and the second air passage 10 communicates with the front opening 14 when closed and the second air passage 10 when opened. The front openings 14 are closed. The second damper 17 blocks the front opening 14 side during heating and connects the intake port 15 during heating with the intake port 5a of the fan coil unit 4 through the first air flow path 11, and also during cooling. Cuts off the first air flow passage 11 side and switches the flow passages so that the front opening 14 communicates with the suction port 5a.

The damper shafts 18 and 19 of each of the dampers 16 and 17 are connected to the interlocking shaft 20 via a link 23 on the inner side of the casing 3 as shown in FIG. The interlocking shaft 20 has an operation handle 21 projecting on the side surface of the casing 3 at the upper part, and is pulled and urged toward the front side or the rear side by exceeding the urging neutral point of the spring 22. In the figure, the interlocking shaft 20 is positioned rearward as shown by the solid line, whereby the first damper 16 closes the cooling air outlet 12 and the second damper 17 sucks the heating air inlet 15. It is connected to the mouth 5a and is fixed in this state. If the handle 21 is pulled to the front side from this state, the spring 22 is biased to the reverse side, and the first damper 16 opens the cooling outlet 12 at the same time as the second air is blown as shown by the imaginary line in the figure. The flow path 10 and the front opening 14 are blocked, and the second damper 17 connects the front opening 14 and the suction port 5a.

The solid line in FIG. 1 shows the flow of air during normal cooling. By pulling the handle 21 toward the front side, the indoor air flows from the front opening 14 through the suction port 5a to the fan. After entering the coil unit 4 and being cooled there by heat exchange, it is blown as cool air from the cooling air outlet 12 through the second air flow passage 10 to obtain the same indoor R cooling effect as in the conventional case. become.

On the other hand, the chain line in the figure shows the flow of air during heating, and by arranging the handle 21 on the side of the solid line, the air in the room R is heated near the window 1a. The air is taken into the casing 3 through the suction port 15, enters the fan coil unit 4 through the first air passage 11 and the suction port 5a, and is heated there by heat exchange. Through the front opening 14.

Therefore, during heating, the cold air around the window 1 a generated by the cold draft is heat-exchanged by the fan coil unit 4 and is blown out as warm air from the front opening 14 and the floor 2 part. Therefore, the indoor R will be warmed while circulating.

A louver 24 is attached to the front opening 14 in the above configuration. The louver 24 is formed by punching a metal plate to form a large number of openings and a large number of guide fins 24a corresponding to the openings. The angle of each guide fin 24a is from the center as shown in FIG. 3 (b). The angle is set to become deeper as it goes to both sides, and it expands in a fan shape toward the outside. The angle setting of the guide fins 24a can be easily adjusted / changed on site. Therefore, when the louver 24 is absent during warming up, as shown in FIG. 3 (a), the blowing range of the warm air has a width equal to the width of the front opening 14, but is guided by the fins 24a of the louver 24. As a result, the blowout area spreads out in a fan shape, and warm air can be diffused and supplied to more areas.

FIGS. 4, 5 (a) and 5 (b) show another embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals in the figure, and different parts are designated by different reference numerals. In the drawing, the louver 30 arranged in the inner part of the front opening 14 of the casing 3 is arranged with the shaft portion 31 rotatably supported on both sides of the casing 3 and the outer periphery of the shaft portion 31 with the same inclination angle. In addition, a large number of guide fins 32 and a rotation driving motor 33 arranged on one side of the casing 3 and connected to the end of the shaft 31 are provided. Each fin 32 is a disk-shaped blade having a diameter substantially equal to the height of the front opening 14.

Therefore, in this embodiment, when the hot air is blown out, the motor 33 is rotationally driven to tilt the motor 33 with respect to the front opening 14 according to the rotational angle as shown in FIGS. 5 (a) and 5 (b). The angle is changed, and the warm air is guided according to the changed angle and sequentially blows from left to right, then from right to left, which allows warm air to reach a wider area of the indoor R. Can be supplied by diffusion.

Although the above embodiment has been described for the case of being applied to a so-called concealment type air conditioning indoor unit, the present invention is not limited to this, and an exposed type or a free access floor compatible type indoor unit can also be applied to these structures. It goes without saying that the present invention can be applied only by changing the corresponding details.

[0025]

[Effect of device]

 As described in detail in each of the above embodiments, in the air conditioner indoor unit according to the present invention, the diffusion range of warm air can be adjusted by the louver provided at the front opening during heating, and particularly In the case of the structure of 2, the inclination angle of the fin with respect to the front opening changes sequentially, and the wind direction is variably adjusted according to the change of the inclination angle, so that the warm air is diffused and supplied to a wider area of the floor surface. It is possible to obtain a more uniform and comfortable air conditioning effect.

[Brief description of drawings]

FIG. 1 is a side sectional view of a floor-standing type air conditioning indoor unit according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of the same portion.

FIG. 3A is an explanatory plan view showing a warm air blowing range without a louver, and FIG. 3B is an explanatory plan view showing a warm air blowing range with a louver provided.

FIG. 4 is a front view of an air conditioning indoor unit according to another embodiment of the present invention.

5 (a) and 5 (b) are plan explanatory views showing a blowing range of warm air in the embodiment.

[Explanation of symbols]

 3 Casing 4 Fan Coil Unit 14 Front Opening 15 Heating Inlet 24, 30 Louver 24a, 32 Guide Fin 31 Shaft 33 Rotation Drive Motor

Claims (2)

[Scope of utility model registration request] 1. An indoor unit for air conditioning, wherein during heating, air is taken in from the vicinity of the window of the casing, passes through an internal fan coil unit, and the hot air that has undergone heat exchange is blown out from the front opening of the casing. In the air conditioner indoor unit, a louver for rectifying the wind direction is provided in the front opening. 2. The louver comprises a rotary shaft arranged in parallel with the front opening, a number of guide fins attached to the rotary shaft at equal inclination angles, and a motor for rotationally driving the rotary shaft. The air conditioning indoor unit according to claim 1, further comprising: