JP2002372295A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner, improving the distribution of air passing through a heat exchanger even when there is a part, through which air is not ventilated, and preventing the deterioration of a heat exchanging efficiency. SOLUTION: A suction grille 3 having the part, through which air is not ventilated, and a ventilating part or a suction hole 6 is provided with airflow direction guiding plates 12 and airflow direction diffusing plates 13 for diffusing air, passed through the suction hole 6, to the rear part of the part 5, through which the air is not ventilated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to equalizing the intake air of an air conditioner.

[0002]

2. Description of the Related Art A conventional air conditioner of this type generally has a configuration shown in FIG.
As shown in FIG. 8, the front surface of the design part of the air conditioner main body 1 is constituted by a front panel 2 and a suction grill 3. The suction grille 3 has a suction port 4 as a ventilation section on the left and right, and a non-ventilation section 5 is disposed at the center thereof. The non-ventilated portion 5 is subjected to secondary processing such as painting or printing to change the surface treatment of the suction grill 3 so as to prevent a simple design. However, if the non-ventilating portion is completely closed, the resistance of the air blow increases, and the suction air sucked into the heat exchanger behind the nozzle becomes uneven.

However, if the suction port is provided in the non-ventilated portion, the effect of the secondary processing such as painting is lost, so that the non-ventilated portion 5 is required to satisfy both the performance and the design to some extent. Suction holes 6 are provided at both left and right ends. For this reason, design restrictions are imposed, and the degree of freedom in design is reduced. Reference numeral 7 denotes a heat exchanger disposed behind the suction grille 3, reference numeral 8 denotes a cross-flow fan-type blower for generating an airflow passing through the heat exchanger 7, reference numeral 9 denotes a motor for driving the blower 8, and a suction port. 4
A dust filter 10 is arranged between the heat exchanger 7 and the heat exchanger 7. Reference numeral 11 denotes a conditioned air outlet.

Next, the operation will be described. The blower 8 is rotated by the rotation of the electric motor 9, and the air sucked from the suction port 4 is dust-removed by the dust filter 10, passes through the heat exchanger 7, is air-conditioned, and is blown out from the outlet 11. At this time, as shown in FIG. 9, almost no air passes through the non-ventilated portion 5 except for the suction holes 6, so that the air does not flow to the rear of the non-ventilated portion 5 of the heat exchanger 7. Since the heat exchanger 7 exchanges heat by the flow of the wind, heat is not exchanged in the portion where the wind does not pass, so that the temperature distribution of the heat exchanger 7 is not uniform and the heat exchange efficiency is reduced.

[0005]

Since the conventional air conditioner is configured as described above, heat is not exchanged where the non-ventilated portion 5 is located, and the temperature distribution of the heat exchanger 7 is not uniformized and the heat is not generated. There was a problem that the exchange efficiency was reduced. In addition, in order to make the temperature distribution uniform, it is necessary to form a ventilation hole 6 in the non-ventilated portion 5 or to reduce the size of the non-ventilated portion 5 itself. I was

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and improves the distribution of wind passing through a heat exchanger even when there is a non-ventilated portion, thereby preventing a decrease in heat exchange efficiency. An object is to provide an air conditioner.

[0007]

According to the air conditioner of the present invention, in a suction grill having a non-ventilated portion and a ventilated portion, a wind direction diffusing plate for diffusing wind passing through the ventilated portion to the rear of the non-ventilated portion. Is provided.

Further, in the suction grill having a non-ventilated portion and a ventilated portion, a wind direction guide plate for guiding the wind passing through the ventilated portion to the rear of the non-ventilated portion is provided.

Further, the wind direction diffusion plate is provided integrally with the suction grill.

[0010] Further, a display section is provided in the non-ventilated section.

Further, an operation section is provided in the non-ventilated section.

Further, a deodorizing filter or an air purifying filter is disposed between the dust removing filter and the heat exchanger behind the non-ventilated portion.

Further, a ventilation hole having a lower passage resistance than the ventilation portion outside the non-ventilation portion is formed in the non-ventilation portion, and the ventilation hole is provided behind the ventilation hole.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an air conditioner according to an embodiment of the present invention, and FIG. 2 is a partial sectional view near a non-ventilated portion in FIG. Figures 1 and 2
The front of the design part of the air conditioner body 1
And the suction grill 3. A plurality of parallel horizontal rails and a vertical rail connecting each of the horizontal rails at the rear thereof intersect with each other, and the suction grille 3 is formed with left and right suction openings 4 serving as ventilation portions divided into a lattice shape. A non-ventilated portion 5 is formed at the center. The non-ventilated portion 5 is subjected to secondary processing such as painting or printing to change the surface treatment of the suction grill 3 so as to prevent a simple design.

At both left and right ends of the non-ventilated portion 5, suction holes 6 are formed as ventilation portions having a width larger than a grid formed by bars so that the ventilation resistance is smaller than that of the suction port 4. 7
Is a heat exchanger disposed behind the suction grille 3, 8 is a cross-flow fan type blower that generates an airflow passing through the heat exchanger 7, 9 is an electric motor that drives the blower 8,
Further, a dust filter 1 is provided between the suction port 4 and the heat exchanger 7.
0 is placed. The position of the outlet is the same as that of the conventional air conditioner shown in FIG.

Reference numeral 12 denotes a wind direction guide plate provided diagonally inward from the outer end face of the suction hole 6 integrally with the suction grille 3, and 13 denotes a wind direction diffusion plate provided diagonally inside the rear portion of the suction hole 6. Are formed integrally. The wind direction guide plate 12 and the wind direction diffusion plate 13 have the same longitudinal dimension of the suction hole 6.
Since the wind direction guide plate 12 is formed obliquely toward the suction hole 6 as shown in FIG. 2, it is difficult to see the inside of the suction hole 6 from the front of the air conditioner. In addition, since the wind direction diffusion plate 13 is located behind the non-ventilated portion 5, the inside of the suction hole 6 is difficult to see from the oblique outside. In addition, in FIG.
Is arranged at the center of the suction grille 3, but may be arranged at the left end as shown in FIG. 3, for example, and there is no particular limitation.

Further, in this embodiment, R2 is used as the refrigerant.
R410A having a smaller temperature gradient in the heat exchanger than No. 2 is used, and an alkylbenzene-based oil having low compatibility with the refrigerant is used as the refrigerating machine oil. The refrigerant is R40
An HFC-based refrigerant such as 7C and an HC-based flammable refrigerant such as R32 can be used. As the refrigerating machine oil, an ester oil having high compatibility with the refrigerant can be used.

Next, the operation will be described. With the cooling, dehumidifying or heating operation, the blower 8 is rotated by the rotation of the electric motor 9, and the air sucked in from the suction port 4 is removed by the dust filter 10 and then passes through the heat exchanger 7 and blows out from the outlet. Is done. The flow of the wind at this time is shown in FIG.
As shown in A, the air enters from the suction hole 6, the wind direction is guided inward by the wind direction guide plate 12, that is, to the rear of the non-ventilated portion 5, and the flow is diffused as C and D by the wind direction diffusion plate 13. As a result, the gas flows uniformly into the heat exchanger 7.

Since the ventilation hole 6 has a larger opening area and a smaller pressure loss than the other suction ports 4 formed in the ventilation section, sufficient air can be guided to the rear of the non-ventilation section 5. Further, the interior is hardly seen by the wind direction guide plate 12 and the wind direction diffusion plate 13, and the design is improved. In the present embodiment, an HFC-based R410A refrigerant having a smaller temperature gradient in the heat exchanger 7 than the HCFC-based R22 refrigerant conventionally used as the refrigerant is used. For this reason, if there is a portion where heat exchange with the air is not performed due to the non-ventilated portion, there is a large waste, and as in the present embodiment, the heat exchange is performed by making the air flow through the heat exchanger 7 as uniformly as possible. Efficiency is improved.

Embodiment 2 Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 4 is a partial cross-sectional view near the non-ventilated portion of the air conditioner according to the embodiment of the present invention. In FIG. 4, reference numeral 14 denotes a display substrate disposed on the back surface of the non-ventilated portion 5, and 15 denotes a display fixture for fixing the display substrate 14, which has a corner cut obliquely so as not to affect the flow of wind. It is arranged in. Reference numeral 16 denotes a display window fixed to the non-ventilated portion 5 and transmits light from the display substrate 14 using a transparent material. These display substrate 14, display fixture 15
And a display window 16 constitute a display unit. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and the description is omitted.

Next, the operation will be described. The wind flow is A
The wind direction is guided inward by the wind direction guide plate 12 as shown by B in FIG.
3, the flow is diffused as in C and D, and the heat exchanger 7
To flow evenly. Such a flow of wind is the same as in the first embodiment. At this time, since the display fixture 15 is disposed in the non-ventilated portion 5, it hardly affects the flow of the wind, and is an effective means when it is desired to arrange the display portion in the non-ventilated portion in terms of design. Further, since wind flows in the vicinity of the display substrate 14, for example, if the display fixture 15 has thermal conductivity,
Heat generation of the substrate itself can be prevented.

Further, in the present embodiment, the display fixing unit 15
Is obliquely cut, and the corner portion and the wind direction diffusing plate 13 are parallel to each other to form a relatively narrow air passage, so that the wind D is fast and the heat exchanger behind the non-ventilation portion 5 is formed. Direction. In the present embodiment, a slight gap is formed between the end of the display fixture 15 and the non-ventilated portion 5 to promote heat radiation of the display substrate 14, but if the display fixture 15 has sufficiently high thermal conductivity. Alternatively, the end of the display fixture 15 and the non-ventilated portion 5 may be brought into close contact with each other, so that adhesion of dust to the display substrate 14 can be prevented.

Embodiment 3 FIG. Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 5 is a partial cross-sectional view in the vicinity of the non-ventilated portion of the air conditioner according to the embodiment of the present invention. In FIG. 5, reference numeral 17 denotes an operation board disposed on the back surface of the non-ventilation section 5, and 18 denotes an operation fixture for fixing the operation board 17, and the corners are cut obliquely so as not to affect the flow of wind. It is arranged in. Reference numeral 19 denotes an operation window provided in the non-ventilated portion 5. The operation board 17, the operation fixture 18 and the operation window 19 constitute an operation unit. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and the description is omitted.

Next, the operation will be described. The wind flow is A
The wind direction is guided inward by the wind direction guide plate 12 as shown by B in FIG.
3, the flow is diffused as in C and D, and the heat exchanger 7
To flow evenly. At this time, the operation fixture 18
Since it is arranged in the non-ventilation part 5, it has no effect on the flow of the wind, and is an effective means when it is desired to arrange the operation part in the non-ventilation part in design. Further, since wind flows near the operation board 17, for example, if the operation fixture 18 has thermal conductivity,
Heat generation of the substrate itself can be prevented.

Further, in the present embodiment, the operation fixing section 18
Is obliquely cut, and the corner portion and the wind direction diffusing plate 13 are parallel to each other to form a relatively narrow air passage, so that the wind D is fast and the heat exchanger behind the non-ventilation portion 5 is formed. Direction. In the present embodiment, a slight gap is formed between the end of the operation fixture 18 and the non-ventilated portion 5 to promote heat radiation of the operation board 17, but if the operation fixture 18 has sufficiently high thermal conductivity. Alternatively, the end of the operation fixture 18 and the non-ventilated portion 5 may be brought into close contact with each other, whereby the adhesion of dust to the operation board 17 can be prevented.

Embodiment 4 Embodiment 4 of the present invention will be described with reference to the drawings. FIG. 6 is a partial cross-sectional view in the vicinity of the non-ventilated portion of the air conditioner according to the embodiment of the present invention. In FIG. 6, reference numeral 20 denotes a deodorizing filter disposed between the dust removing filter 10 and the heat exchanger 20 behind the non-ventilating portion 5, and is made of activated carbon or the like that absorbs odor components. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and the description is omitted.

Next, the operation will be described. The wind flow is A
The wind direction is guided inward by the wind direction guide plate 12 as shown by B in FIG.
By 3, the flow is diffused as in C and D, so that it flows uniformly to the deodorizing filter 20. The ventilation hole 6 has a larger opening area and a smaller pressure loss than the other suction ports 4 formed in the ventilation section, so that sufficient air can be guided to the rear of the non-ventilation section 5.

The part where the deodorizing filter 20 is disposed is
Since the pressure loss is larger than that of the other parts, if the deodorizing filter 20 is arranged behind the suction port 4 which is a ventilation part, for example, and the wind is to be flown in the same way as the other parts, the deodorization of the suction port 4 will occur. It is necessary to reduce the pressure loss at the front part of the filter 20, which is a factor that restricts the design of the suction port 4. By disposing the deodorizing filter 20 behind the non-ventilated portion 5 and forming the vent hole 6 in the non-ventilated portion 5 as in the present embodiment, the size of the vent hole 6, the wind direction guide plate 12, the wind direction diffusion plate 13 Is appropriately set, the wind speed different from that of the suction port 4 can be generated toward the deodorizing filter 20.
It is possible to ease the restrictions on the design of the suction port 4 and the suction port 4.

Embodiment 5 In the fourth embodiment, the deodorizing filter 20 is provided. However, even if an air cleaning filter is provided instead, the air can be uniformly flowed through the air cleaning filter. Further, the configurations of Embodiments 1 to 5 can be appropriately combined. Furthermore, the ventilation hole 6 does not necessarily need to be formed in the non-ventilation part 5, and for example, a ventilation part having a smaller air path resistance than the suction port 4 is formed near the boundary between the suction port 4 and the non-ventilation part 5 which are ventilation parts You may.

[0030]

As described above, according to the present invention, in a suction grill having a non-ventilated portion and a ventilated portion,
Since a wind direction diffusion plate for diffusing the wind passing through the ventilation portion to the rear of the non-ventilation portion is provided, the distribution of the wind entering the heat exchanger is such that the air entering from the suction hole is diffused by the wind direction diffusion plate. This has the effect of improving the heat exchange efficiency of the heat exchanger.

In the suction grill having the non-ventilated portion and the ventilated portion, a wind direction guide plate for guiding the wind passing through the ventilated portion to the rear of the non-ventilated portion is provided. The distribution of the wind entering the heat exchanger with the wind direction being guided inward by the guide plate is improved, and the heat exchange efficiency of the heat exchanger can be improved.

Further, since the wind direction diffusing plate is provided integrally with the suction grill, the heat exchange efficiency of the heat exchanger can be improved while suppressing an increase in cost.

In addition, since the display substrate is provided in the non-ventilated portion,
There is an effect that the display portion can be arranged in the non-ventilated portion in a design while suppressing the influence on the flow of the wind.

Further, since the operation board is provided in the non-ventilated portion,
There is an effect that the operation unit can be designed and arranged in the non-ventilation part while suppressing the influence on the wind flow.

Further, since the deodorizing filter or the air purifying filter is disposed between the dust removing filter and the heat exchanger behind the non-ventilating section, the air passing through the deodorizing filter or the air purifying filter can be secured even if there is a non-ventilating section. Thus, there is an effect that the deodorizing efficiency or the air cleaning efficiency can be improved.

Further, a ventilation hole having a smaller passage resistance than the ventilation portion outside the non-ventilation portion is formed in the non-ventilation portion, and is provided behind the ventilation hole for the wind direction diffusing plate or the wind direction guide plate. There is an effect that the wind behind the non-ventilated portion can be secured without any problem.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a partial cross-sectional view illustrating a non-ventilated portion of the air conditioner according to Embodiment 1 of the present invention.

FIG. 3 is a perspective view of the air conditioner according to Embodiment 1 of the present invention.

FIG. 4 is a partial cross-sectional view illustrating a non-ventilated portion of an air conditioner according to Embodiment 2 of the present invention.

FIG. 5 is a partial cross-sectional view illustrating a non-ventilated portion of an air conditioner according to Embodiment 3 of the present invention.

FIG. 6 is a partial cross-sectional view illustrating a non-ventilated portion of an air conditioner according to Embodiment 4 of the present invention.

FIG. 7 is a perspective view of a conventional air conditioner.

FIG. 8 is a longitudinal sectional view of a conventional air conditioner.

FIG. 9 is a partial cross-sectional view illustrating a non-ventilated portion of a conventional air conditioner.

[Explanation of symbols]

1 air conditioner, 2 front panel, 3 suction grille, 4 suction port, 5 non-ventilated section, 6 suction hole, 7
Heat exchanger, 10 dust filter, 12 wind direction guide plate, 13 wind direction diffusion plate, 14 display board, 17
Operation board, 20 deodorizing filter.

Claims (7)

[Claims] 1. An air conditioner, comprising: a suction grill having a non-ventilated portion and a ventilated portion, a wind direction diffusing plate for diffusing wind passing through the ventilated portion to the rear of the non-ventilated portion. 2. An air conditioner, comprising: a suction grill having a non-ventilated portion and a ventilated portion, wherein a wind direction guide plate is provided for guiding wind passing through the ventilated portion to the rear of the non-ventilated portion. 3. The air conditioner according to claim 1, wherein the wind direction diffusion plate is provided integrally with the suction grill. 4. The air conditioner according to claim 1, wherein a display section is provided in the non-ventilated section. 5. The air conditioner according to claim 1, wherein an operation section is provided in the non-ventilated section. 6. The air conditioner according to claim 1, wherein a deodorizing filter or an air purifying filter is disposed between the dust removing filter and the heat exchanger behind the non-ventilated portion. 7. A ventilation hole having a lower passage resistance than the ventilation portion outside the non-ventilation portion is formed in the non-ventilation portion, and the ventilation hole is provided behind the ventilation hole. Item 3. The air conditioner according to item 1 or 2.