JPH094868A - High air pressure type air conditioner - Google Patents

Abstract

PURPOSE: To provide a high air pressure air conditioner fixed to in a ceiling or the like in which it has a simple structure, an entire flat and compact form can be attained, it can be well stored in a building in view of structure and it generates a low noise. CONSTITUTION: This air conditioner is comprised of a heat exchanger, a blower, and an air filter as its basic components, wherein a first blower 3 and a second blower 4 having the same size to each other are arranged in a linear form on one line, a location where the second blower 4 is positioned is sealed closely by predetermined partition walls 14, 15 except blowing-out ports 31, 41 of each of the blowers 3, 4 and at the same time each of the blowers is arranged in an inverse upward or downward direction in such a way that they may be rotated in a reverse direction from each other at the same number of rotation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high wind pressure type air conditioner installed in a ceiling or a wall surface.

[0002]

2. Description of the Related Art Conventionally, when there is no machine room in a building, an air conditioner, which is installed in the ceiling from the standpoint of construction, has a height dimension as small as possible and is installed on the floor. In particular, it is desired to make the depth dimension as small as possible, and since it is often installed in the living area or a place close to the living area, it is desired that the noise is as low as possible.

Further, in recent years, the number of internal components of the air conditioner such as the use of a high performance air filter and the addition of a natural evaporative humidifier is increasing, and the air pressure consumed by the air conditioner tends to increase. Furthermore, depending on the installation conditions that use the idle space of the building, a long duct from a distant place to a living area is required, and the added wind pressure tends to increase.

Therefore, as a means for increasing the wind pressure, generally, the number of rotations of the impeller is increased, or as shown in the cross section of a typical air conditioner in FIG. It is often practiced to install a set of blowers D as a booster fan near the outlet C of conditioned air in the living area via B, but these methods increase noise in the living area. There was a flaw.

Therefore, as shown in FIG. 5, two sets of blowers are arranged in series in the air conditioner, or a component such as a heat exchanger or a duct that consumes wind pressure is interposed between the two sets of blowers. However, even if two sets of blowers are used, there is a problem that the wind pressure does not double as desired.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and has a simple structure and a flat and compact form as a whole, which is excellent in construction, has low noise,
The purpose is to provide an air conditioner with high wind pressure.

[0007]

SUMMARY OF THE INVENTION The present invention is an air conditioner having a heat exchanger, a sirocco fan type blower (hereinafter referred to as a blower), an air filter, and the like as basic elements and having the same size. The blowers are arranged in series on a straight line, and the place where the second blower is located is sealed with a predetermined partition wall except for the blower outlet of each blower, and each blower has the same rotation speed but opposite directions. It is arranged upside down so that it rotates in the vertical direction.

[0008]

According to the above means, the blowers of the same size are vertically reversed and the rotation directions are opposite to each other, so that the positions of the two impellers can be made to approach each other in the front-rear and vertical directions. The dynamic pressure of the blown airflow of the rear blower can be smoothly and effectively introduced into the front blower.

That is, in the sirocco fan type blower, as shown in FIG. 4, the housing F forms a cochleate shape that spreads out in the direction of rotation of the circular impeller E, and the air blown from the impeller E blades is blown out. The flow is gradually decelerated, and the wind pressure generated by the wind speed, that is, the dynamic wind pressure is partially converted into static pressure in the housing F.

Then, the converted static pressure becomes an external pressure G on the outer circumference of the impeller E, and acts in a direction to hinder the acceleration of the air flow by the blades. Therefore, the suction port A divided into two parts up and down
In the area and the area B, the acceleration of the air flow by the blades of the impeller E is larger in the area B than in the area A because the external pressure G is smaller. That is, if the third airflow is blown into the B area of the suction port, the acceleration by the blades is increased more efficiently,
It is more effective than that of the area.

Now, the specific operation of the present invention will be illustrated with reference to FIG. A conventional serial arrangement will be illustrated with reference to FIG. The blowout airflow of the first blower L (sirocco fan type blower) in FIG. 6 is intensively blown into the lower region (B region) of the suction port of the second blower M (sirocco fan type blower). On the other hand, the blowing airflow of the first blower N of FIG. 5 is intensively blown into the upper area (A area) of the second blower P.

As described above, in order to add an efficient work to the second blower, the efficiency is deteriorated unless the wind is concentrated in the area B, and the distance between the first and second blowers is increased. When adjacent to each other, the blower area of the first blower spreads in inverse proportion to the distance and spreads to both the B area and the A area, resulting in inefficiency.

That is, it is desirable that the distance between the first and second blowers is as close as possible, and the maximum allowable value of the distance is within the radius of the impeller between the housing end faces of the first and second blowers. Is.

On the other hand, in the arrangement of the blowers shown in FIG. 5, when the first blowers are arranged so as to be shifted downward so that the blown airflow of the first blower N blows into the area B of the second blower P, the blowers are arranged in parallel vertically. The attachment of the air conditioner to the air conditioning unit becomes large in the vertical direction, that is, the unit becomes thicker and less compact.

Further, in the case of FIG. 6 (in the case of the present invention), the streamline of the blown airflow from the first blower L becomes a swirl flow in the same direction as the rotation direction of the second blower M, and the impeller of the second blower M is shown. 5 (according to the conventional example), the flow line becomes a reverse rotation swirl flow, and the inflow into the impeller of the second blower P is not efficient.

Therefore, the blowing of the first blower into the second blower is not limited to the blowing into the upper and lower areas (A zone and B zone) of the second blower, and the rotation of the impellers of the first and second blowers is not limited to that. By reversing, the swirling flow of the blown airflow is efficiently sent to the second blower, so that a synergistic effect is provided.

The above description of the operation is mainly for the cross-sectional direction, but the effect of blowing into the second blower is meaningless unless the first and second blowers are arranged in series and straight line. The blower must be located immediately after the second blower.

[0018]

Embodiments Embodiments will be described below with reference to the drawings. In FIG. 1, reference numeral 10 indicates a high wind pressure type air conditioner of the present invention. The high wind pressure type air conditioner 10 includes a casing 1
And an air filter 2 provided inside the casing 1.
, A first blower 3 provided in front of the air filter 2, and a second blower 4 provided in front of the first blower 2.
And a heat exchanger 5 and the like provided in front of the second blower 4, and the air filter 2, the first blower 3, the second blower 4, and the heat exchanger 5 are held in the casing 1 by appropriate means. There is.

The casing 1 has a suction portion 11 to which an air suction duct is connected at the rear end surface and a blow portion 12 at the front end surface through which conditioned air is blown, and is located at the peripheral portion of the air filter 2. The air filter support portion 13 having a structure in which the air sucked from the portion 11 surely passes through the air filter 2 is formed, and the first partition wall 14 is provided on the first blower outlet 31 side of the first blower 3 and the second partition wall 14 is provided. The second partition wall 15 is formed on the side of the second outlet 41 of the blower 4. The heat exchanger 5 is attached to the support base 16 formed in the casing 1, and the drain pan 6 is provided on the lower surface of the support base 16.

That is, by forming the closed space 100 between the first partition wall 14 and the second partition wall 15, the location where the second blower 4 is located is removed except the first and second outlets 31, 31 and 41. The first blower 3 is sealed so that the air on the second blower 4 side is not sucked into the first blower 3 and the air on the heat exchanger 5 side is not sucked into the second blower 4. The blown air is efficiently sucked into the second blower 4. Needless to say, the closed space 100 does not mean a completely closed state, but may be a closed state that does not impair the effects of the present invention.

The first blower 3 comprises a first housing 32 and a first impeller 33 which rotates in the first housing 32. The front end face of the first outlet 31 located at the front end of the first housing 32 is Projecting from the first partition wall 14 toward the second blower 4 side, the first impeller 33 rotates counterclockwise in FIG.

The second blower 4 comprises a second housing 42 having the same size as the first housing 32, a second impeller 43 having the same size as the first impeller 33 rotating in the second housing 42, and the like. The front end face of the second outlet 41 located at the front end of the housing 42 is located closer to the heat exchanger 5 than the second partition wall 15.
Projecting to the side, the second impeller 43 rotates clockwise in FIG. 1 at the same rotation speed as the first impeller 33. That is, the first impeller 33 and the second impeller 43 rotate at the same rotational speed in opposite directions.

The vertical positional relationship of the first blower 3 with respect to the second blower 4 is within a range corresponding to the radial dimensions of the first and second impellers 33 and 43, and the center of rotation of the first impeller 33. The predetermined effect can be obtained even if the position is shifted from the rotation center position of the second impeller 43 in the downward direction perpendicular to the blowing direction of the second blower 4, but the rotation center positions of both impellers 33 and 43 are It is more preferable that the first blower 3 and the second blower 4 are located on the same straight line parallel to the blowing direction of the second blower 4, and the first blower 3 and the second blower 4 correspond to the radius of the first impeller 33. As much as it is, it is shifted below the second blower 4.

The positional relationship between the air flow of the first blower 3 and the second blower 4 in the front-rear direction is within the range from the front end face of the first outlet 31 to the radial dimension of the impeller, and the rear of the second housing 42. The desired effect can be obtained even if the end effect is shifted in the front-rear direction parallel to the blowing direction of the second blower 4, but on a straight line which is perpendicular to the blowing direction of the second blower and is in contact with the rear end face of the second housing 42. It is more preferable that the front end face of the first outlet 31 is located, and the embodiment has such a configuration.

Further, facing the air outlet 12 of the air conditioner 10, the positional relationship between the first blower 3 and the second blower 4 in the left-right direction is the center position of the first blower 3 and the second blower 4 in the left-right direction. Are located on the same straight line parallel to the blowing direction of the second blower 4. That is, the first blower 3 is the second blower 4
Are arranged on a straight line.

FIG. 2 shows the series operation of the present invention (first of the present invention.
Two blowers 3 and two second blowers 4 were installed side by side, totaling 4
A high wind pressure type air conditioner equipped with a stand is hereinafter referred to as a high wind pressure type air conditioner of the present invention. ) And a conventional series operation (two fans each having the same rotation speed and the same rotation direction are installed in parallel,
A high wind pressure type air conditioner equipped with a total of four units is hereinafter referred to as a conventional high wind pressure type air conditioner. ) And stand-alone operation (2 blowers
Air conditioners installed side by side, hereinafter referred to as a single air conditioner. ) Of the impeller diameter of 140 mm and 1770 revolutions per minute, showing the air flow rate-air pressure-axis power characteristics experimental diagram,
The solid line represents the experimental value of the high wind pressure type air conditioner of the present invention, the dashed line represents the experimental value of the conventional high wind pressure type air conditioner, and the broken line represents the experimental value of the single unit air conditioner.

According to the experimental results, the wind pressure (static pressure) is 14.3 mm water column for the single air conditioner, 19.5 mm water column for the conventional high wind pressure type air conditioner, and the high wind pressure type air of the present invention at an air volume of 1000 m ^{3 /} hour. The harmony machine shows a 25.5 mm water column,
Axial power is 115 watts, 150 watts, 140 respectively
Shows Watts.

That is, the wind pressure of the high wind pressure type air conditioner of the present invention is about 1.8 times that of the single air conditioner and about 1.3 times that of the conventional high wind pressure type air conditioner, and the shaft power is The value is about 1.2 times that of a single air conditioner and 0.9 times that of a conventional high wind pressure type air conditioner.

[0029]

According to the present invention, by arranging two sets of blowers of the same size in the casing as close as possible in a straight line in series, the blowout air flow of the first blower changes from dynamic pressure due to deceleration to static pressure. It is possible to eliminate the dynamic pressure loss due to minimizing the conversion of the air conditioner and to blow it into the suction port of the second blower. Further, the first blower and the second blower are arranged so that they are vertically reversed, and the vertical relational positions of both blowers are made as small as possible, so that the blowout airflow from the first blower is directly directed to the second blower. Can be blown into the high efficiency input part of the lower half (B area) of the suction port, and the mutually opposite impellers are rotated in the reverse rotation arrangement described above, so that the air flow is smoothly transferred from the first blower to the second blower. In addition, the air pressure of the blown airflow of the second blower can be dramatically increased, and the air conditioner can be made flat and compact.

[Brief description of drawings]

FIG. 1 is a schematic vertical cross-sectional view of essential parts of a high wind pressure type air conditioner of the present invention.

FIG. 2 is an experimental diagram of the air volume, wind pressure, and shaft power characteristics of the present invention and the conventional example.

FIG. 3 is a schematic vertical sectional view of a main part of a conventional example.

FIG. 4 is an explanatory diagram of a sirocco fan type blower.

FIG. 5 is an explanatory diagram of a conventional serially arranged blower.

FIG. 6 is an explanatory view of the blower of the present invention.

[Explanation of symbols]

 1 Casing 10 High Wind Pressure Type Air Conditioner 14 1st Partition Wall 15 2nd Partition Wall 100 Closed Space 2 Air Filter 3 1st Blower 31 1st Outlet 32 1st Housing 33 1st Impeller 4 2nd Blower 41 2nd Air outlet 42 Second housing 43 Second impeller

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[Procedure amendment]

[Submission date] August 29, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

FIG. 2 shows a series operation of the present invention (two high-pressure air conditioners each having two first blowers 3 and two second blowers 4 of the present invention installed in parallel, hereinafter referred to as the present invention). Of high wind pressure type air conditioner) and conventional series operation (two wind blowers with the same rotation speed and the same rotation direction are installed in parallel, respectively, a high wind pressure type air conditioner with a total of four installed. refers to conventional high wind pressure type air conditioner.) and the elemental operation (fan 2 Tainami設air conditioner, hereinafter referred to as a single air conditioner. impeller diameter 140mm in) per minute 3 70 rotate In the case of, the air flow rate-wind pressure-axis power characteristic experimental diagram is shown, the solid line is the experimental value of the high wind pressure type air conditioner of the present invention, the dashed line is the conventional high wind pressure type air conditioner experimental value, and the broken line is a single unit It shows the experimental value of the air conditioner.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

[Fig. 2]

Claims (1)

[Claims] 1. An air conditioner having a heat exchanger, a sirocco fan type blower (hereinafter referred to as a blower), an air filter and the like as basic elements, and first and second blowers of the same size arranged in series on a straight line. Then, the place where the second blower is located is hermetically sealed with a predetermined partition wall except for the blower outlet of each blower, and each blower is rotated vertically at the same rotation speed so as to rotate in opposite directions. A high wind pressure type air conditioner characterized by being placed in a