JPS587218Y2 - Vertical air conditioner - Google Patents

Description

[Detailed description of the invention] This invention relates to a simple construction air conditioner that is installed at windows and sweeping areas, and reduces the space inside the machine and expands the freedom of installation in the depth direction, as well as reduces noise and abnormal noise. The object of the present invention is to provide a vertically long air conditioner that can blow a large amount of air without causing any problems.

The demand side of this type of easy-to-install air conditioner is that the front and rear depth dimensions are small and the installation flexibility is large because it is installed in a window etc. Two points are that the door has a vertically elongated shape, so-called slim shape, in order to increase the degree of opening and closing of the door.

It goes without saying that the best way to satisfy these demands is to use a configuration in which the indoor side has front suction and front airflow, and the outdoor side has rear suction and airflow. 52152347, it is said that it is preferable to use a centrifugal fan as the blower to circulate air inside the device using a front suction side blowing method, which is also proposed by the manufacturer. Developing an air conditioner with this type of structure has unexpectedly become a topic of study.

However, if you try to incorporate a centrifugal fan into a narrow machine to process suction and blowout from one side, you will not be able to avoid the following inconvenient problems, which is why practical devices are still being provided. The reality is that this is not the case.

That is, when a centrifugal fan is installed in a space that is small in both the depth and width directions, it is necessary to shorten the dimension in the direction perpendicular to the fan axis. ) can be kept small (the extent to which the curved surface gradually opens), and on the other hand, in order to obtain a sufficient amount of air, the enveloping angle of the curved surface that encloses the rotor 15' must be increased. It disappears.

As a result of such restrictions, when the blow-off section 20' is expanded to the full extent of the machine, the wind speed distribution inside the spiral housing 14' is at its maximum in region A, as shown in FIG. The area opening is the middle area and the area C is the minimum area, causing unevenness, and especially the area opening is unstable, making it impossible to obtain the expected air volume, and the blowing air is uneven across the width. There is,
Furthermore, since the wind speed distribution is as shown in FIG. 4A, abnormal noise (crystalline waving sound) is generated due to the surging phenomenon, which is noisy and causes discomfort to users.

On the other hand, in order to eliminate the above-mentioned abnormal noise, it is necessary to reduce the wind speed, and as a result, sufficient air volume cannot be obtained, leading to a decrease in air conditioning capacity, which causes the width of the device to increase. This was undesirable because it went against the grain of achieving the intended purpose.

In view of the fact that these unresolved problems still exist, the present invention enables high-volume circulating air while preventing the generation of noise and abnormal sounds, and also increases installation flexibility and flexibility. We have now devised a new vertical air conditioner that can fully achieve the intended purpose of shortening and reducing the medium dimensions, and with reference to the attached drawings, we will explain the specific embodiments of the present invention having such characteristics. This will be explained in detail below.

1 to 3 show an air conditioner according to an example of the air conditioner of the present invention, and this air conditioner has a vertically elongated casing 1 which is divided into a front chamber 2 and a rear chamber 3. It has an integrated structure in which chambers 2 and 3 are formed into an indoor unit and an outdoor unit,
At the window or sweep area, one sliding door is installed so that it penetrates indoors and outdoors with one half open.

Above-mentioned front chamber 2. The rear chamber 3 is separated by a partition 4 that extends between the middle part of the lower surface of the casing 1 and the middle part of the front surface, which is the indoor side surface, so that there is no mutual thermal interference. The space located in the lower part of the chamber 2 naturally serves as an outdoor unit portion of the rear chamber 3.

On the front side facing the front chamber 2, an indoor air inlet 5 and an elongated indoor air outlet 6 are opened, while on the rear side facing the rear chamber 3 and located outdoors, outdoor air is opened. The casing has a shape in which the suction lower and the outdoor air outlet 8 are opened, and the above-mentioned air flow ports are not present at all on both sides and the upper and lower surfaces of the casing 1.

In the front chamber 2, an indoor coil 9 functioning as an evaporator is disposed directly inward of the indoor air suction port 5, and
Centrifugal fan 1 with front suction section 18 facing indoor coil 9
0 is disposed directly inside the indoor coil 9, and an upper blowing part 20 provided in the axial circumferential direction thereof is communicated with the indoor air outlet 6, and an induction type indoor air circulation line is connected to the front room. It is formed within 2.

On the other hand, in the rear chamber 3, an outdoor coil 11 functioning as a condenser is disposed directly inward of the outdoor air suction lower, and a centrifugal fan 12 with the front suction section 27 facing the outdoor coil 11 is installed. An upper blowing part 29 and a lower blowing part 30 disposed directly inward of the outdoor coil 11 and provided in the axial circumferential direction are communicated with the outdoor air blowing ports 6, 6, respectively, and the outdoor coil 11 is provided with An air circulation line is formed within the rear chamber 3.

The centrifugal fans 10 and 12 are various types of centrifugal fans such as sirocco fans, turbo fans, and radial fans.
The illustrated example is a radial fan), but its basic structure is that a rotor 15 or 24 consisting of a rotor substrate 16 or 25 and blades 17 or 26 is housed in a spiral housing 14 or 23. The air sucked in from the axial direction is blown out in the circumferential direction by centrifugal action.

However, the indoor coil 9 that functions as an evaporator and the outdoor coil 11 that functions as a condenser have different temperature differences between the refrigerant and the circulating air, so the reason why the former 9 is smaller than the latter 11 is because Naturally, therefore, the air volume ratio between the centrifugal fans 10 and 12 is usually set to about 1:2, and it is necessary to increase the capacity of the outdoor centrifugal fan 12.

The two fans 10 and 12 may each have separate drive systems, but in consideration of reducing the dimensions in the depth direction, the illustrated example adopts a single drive system in which the fans 10 and 12 are connected to a two-shaft motor 32, and a centrifugal fan 12 is designed to increase the diameter of the rotor 24 in order to increase the air volume, and the blowing portion is divided into an upper blowing portion 29 and a lower blowing portion 3.
It is provided in two locations, 0 and 0.

As described above, the air conditioner formed with the indoor air circulation line and the outdoor air circulation line further includes a compressor 13 in the empty space in the rear chamber 3, which is part of the outdoor air circulation line. It can be stored in a compact shape.

In an air conditioner with such a structure, both coils 9.11
．． Since both centrifugal fans 10 and 12 can be formed thin, the depth direction is thin, and since the coils and the centrifugal fans are arranged in the front-rear direction, the width dimension determined by both coils 9 and 11 can be reduced. It is sufficient to provide the corresponding inside dimensions, and it is possible to provide a narrow, vertically elongated, slim type air conditioner.

Furthermore, since the air inlet and air outlet are provided both indoors and outdoors on the front and back sides, it goes without saying that the degree of freedom in installation in the depth direction is expanded.

However, in the air conditioner shown in FIGS. 1 to 3, in the outdoor unit, the outdoor air outlet 8 opens horizontally at two locations, upper and lower, sandwiching the outdoor air suction lower.
The centrifugal fan 12 has a rotor 24 having a double-sided blade structure, and a two-sided suction/air blower structure in which the vortex housing 23 has suction sections 27 and 2B at the front and back, and blow-off sections 29 and 30 at the top and bottom, respectively.
It is a so-called forked fan with a blowout structure.

Furthermore, the surrounding space of the spiral housing 23 in the rear chamber 3 (
(including the space in which the compressor 13 is accommodated) is formed on the rear surface of the outdoor coil 11 into a suction passage that communicates the surface existing around the front suction section 27 with the rear suction section 28 of the centrifugal fan 12. .

By making such a structure, far 4? ,%fan 1
It becomes possible to flow suction air with a uniform airflow distribution to the outdoor coil 11, which has a wider circulation area than the open area of the front suction part 27 of 2, thereby increasing the heat exchange efficiency of the outdoor coil 11. , the refrigeration capacity can be maximized.

Furthermore, the air that reaches the rear suction section 28 through the surrounding space of the spiral housing 23 cools the compressor 13 and the motor 32 before being sent outside.
And stable operation can be continued by suppressing the temperature rise of the motor 32.

Therefore, the centrifugal fan 10 in the indoor unit is
A spiral housing 14 that surrounds the rotor 15 has a blowout portion having approximately the same length as the lengthwise dimension of the blowout port 6, and a blowout portion 20 that communicates with the blowout port 6 via a plenum chamber.
and a side wall 14a that extends from the tongue portion 22 in an involute curved shape in the rotation direction of the rotor 15 and forms a portion that gradually embraces the rotor 15, and a side wall 14a that extends from both ends of the side wall 14a to the upper blowing portion 20. Guide walls 14 b and 1 extend respectively.
4C and a guide wall 14 extending from the tongue portion 22.
b smoothly spreads from the tongue part 22 and directs the airflow to the upper blowing part 2.
0, and the side wall 14
A guide wall 14 extending from the end opposite to the tongue 22 of a.
C has a substantially straight shape and reaches the upper blowing part 20, and the rotor 15
The airflow compressed by the centrifugal action can be smoothly guided to the upper blowing section 20.

In this case, by increasing the enclosing angle of the side wall 14a and decreasing the expansion ratio of the involute curved surface (the extent to which it gradually opens from the rotor 15), it is possible to blow air at a high wind speed. This results in the formation of an irregular region opening, which leads to the generation of surging noise.

Therefore, in the present invention, noise prevention pieces 34, 34 are disposed at both longitudinal ends of the guide air outlet 6 to eliminate noise caused by the surging phenomenon.

The noise prevention piece 34.34 is made of a hollow body or a solid body, and has two wall portions 34a that are orthogonal to each other.

34b, one wall 34a, that is, the wall 34a facing the indoor air outlet 6, faces the blowing air flow, and the other wall 34b, that is, the wall 34b extending in the depth direction. is arranged at the predetermined location along the direction of the blown air flow.

By providing the noise prevention pieces 34, 34 configured in this way, the width of the air flux exiting the blow-off section 20 in the longitudinal direction is narrowed, so that the static pressure distribution within the plenum chamber changes. The irregular area opening is eliminated, and a blowing airflow with a uniform flow velocity is obtained throughout the operation, so that a quiet air blowing operation is possible without causing any abnormal noise.

In addition, there is a sufficient amount of airflow, and the air is blown in a wide range, so that short circuits do not occur during operation.

The present invention has the structure and operation described above,
The structure has an indoor air inlet 5 and an indoor air outlet 6 formed on a long and narrow side on the front, and an outdoor air intake lower and an outdoor air outlet 8 on the rear. When installed in a penetrating manner, the degree of installation freedom in the front and rear depth directions is expanded, and the installation can be done with more protrusion either indoors or outdoors at any time, so it can be adapted to the conditions of the installation site. It can take any form, and is more flexible than conventional ones, which allow positioning only at approximately the center in the front-rear direction and are uniform.

Furthermore, when viewed from the front, there is an indoor coil 9 and a centrifugal fan 10.
．． 12 and the outdoor coil 11 in the depth direction, it is sufficient to have a depth commensurate with the dimensions in which the coils 12 and the outdoor coil 11 are arranged in the depth direction, so it can be considered an extremely thin type,
The fan, which is also subject to dimensional restrictions in the width direction, is a centrifugal fan and is installed in a front suction/side blowing system, so it is possible to minimize the width and reduce the installation space. In addition to measuring, you can make maximum use of the door opening/closing function.

In particular, noise prevention pieces 3 are installed at both longitudinal ends of the indoor air outlet 6.
4.34 is provided to eliminate unstable areas of airflow, the wind speed distribution is uniform, and as a result, abnormal noise is prevented and quiet operation is achieved, and pressure loss is small. It has various excellent effects, such as being able to generate high-speed wind with high efficiency and low noise.

[Brief explanation of drawings]

Figures 1 to 3 are a front view, right side view, and rear view showing an overview of a cooling unit according to an example of the air conditioner of the present invention, and Figure 4 (A) 9 shows a fan blower of a conventional air conditioner. They are an outlet wind speed distribution diagram and a housing internal airflow state diagram. 1... Vertical casing, 2... Front chamber, 3... Rear chamber, 5... Indoor air suction port, 6...・Indoor air outlet, 7...
Outdoor air intake port, 8...Outdoor air outlet,
9...Indoor coil, 10...Centrifugal fan, 11...Outdoor coil, 12...Centrifugal fan, 14...Vortex housing , 14a・
...Side wall, 14b, 14C...Guide wall,
15...Rotor, 20...Blowout section, 2
2...Tongue, 34...Noise prevention piece, 3
4 a, 34 b... Wall section.

Claims (1)

[Scope of utility model registration request] The inside of the vertically long casing 1 has an indoor air inlet 5 and an elongated indoor air outlet 6 on the front, and an outdoor air intake lower and an outdoor air outlet 8 on the rear. The front chamber 2 houses an indoor coil 9 and a centrifugal fan 10 in a front and rear arrangement, forming the front chamber 2 into an indoor unit, while the rear chamber 3 houses an indoor coil 9 and a centrifugal fan 10 in a front and rear arrangement. coil 11
and a centrifugal fan 12 are housed in a front and rear arrangement, and the rear chamber 3 is formed into an outdoor unit, and the centrifugal fan 10 includes:
A blowout section 20 that communicates with the indoor air outlet 6 through a plenum chamber and has a blowout section of approximately the same length as the longitudinal dimension of the outlet 6, and a tongue section 22 that gradually opens in the shape of an involute curved surface. a side wall 14a, and guide walls 14b, 1 extending from both ends of the side wall 14a to the blowing part 20, respectively.
The rotor 15 is surrounded by a spiral housing 14 having a diameter of 4 C, while two mutually orthogonal walls 34 a , 34 are provided inside the indoor air outlet 6 .
The noise prevention pieces 34 and 34 consisting of b are arranged at both longitudinal ends of the outlet 6 so that one wall part 34 a faces the blown air flow and the other wall part 34 b runs along the blown air flow. A vertically elongated air conditioner characterized in that surging noise can be eliminated by narrowing the airflow from the centrifugal fan 10 using the noise prevention pieces 34 and 34.