KR100888455B1 - Air conditioner having supply air fan for reducing lose of pressure - Google Patents

Abstract

An air-conditioner including a discharging blower for pressure loss reduction is provided to remove the directivity of air flow of the discharging blower and give the undirected air flow the directivity corresponding to the duct direction, thereby providing air flow without pressure loss and noise. An air-conditioner comprises an intake part(100) having a suction blower(120) inhaling indoor air, an air mixing part(200) ejecting a part of the indoor air inhaled through the intake part and mixing the rest with outside air, a heat exchanger(300) heat-exchanging the air supplied from the air mixing part to the low temperature or high temperature with a heat exchanger(310), a discharge part(400) having a discharging blower(410) for returning the heat-exchanged air to the indoor space, a rectifier(1) removing the directivity of the ventilation air supplied from the discharging blower, a buffer unit(3) maintaining the straightness of the air current passing through the rectifier, and a direction changing part(4) which give the air current having passed through the buffer unit the specific directivity and discharging it.

Description

Air conditioner having discharge blower for reducing pressure loss {Air conditioner having supply air fan for reducing lose of pressure}

The present invention relates to an air conditioner having a discharge blower for reducing pressure loss, and more particularly, an end portion of a supply air fan for supplying a supply air heat-exchanged with cooling or heating air to the room while passing through the air conditioner. The directional blower of the discharge blower is rectified and the blowing direction is changed again in an arbitrary direction so as to provide a blowing force in the same direction according to the flow path direction of the various ducts even when the duct installed in the same direction as the discharge blower of the discharge blower is positioned. The present invention relates to an air conditioner configured to supply air for cooling or heating to each point in a room without a pressure loss.

An air conditioner controls the temperature, humidity, airflow, and cleanliness of the air sent to the room to create a pleasant indoor environment.It is divided into small or large capacity according to the installation location and cooling / heating capacity. Large capacity is used for large buildings such as buildings or factories.

Such a large-capacity air conditioner performs cooling or heating by repeated cycles of forced suction of indoor air, heat exchange to high or low temperature, and reduction back to the room.

9 is a block diagram showing an embodiment of a conventional air conditioner, as shown in the conventional large-capacity air conditioner according to the fluid (air) flow direction 100, the air mixing unit 200, heat exchanger 300 and the discharge unit 400 is configured to sequentially arrange inside the case 500. At this time, the space portion into which air is introduced or discharged is divided by the isolation frame.

The suction part 100 is formed at one side of the upper part of the case 500 and is connected to the room by the indoor air suction port 110 through which the returned indoor air (RA) is sucked, and inside the case 500. A suction blower 120 for sucking indoor air into the apparatus is provided. The suction blower sucks the indoor air to one side and discharges the indoor air to the air mixing unit on the other side by the rotation of the centrifugal fan. There may be various driving methods of the suction blower 120. For example, the suction fan 120 includes a centrifugal fan and a fan motor for driving the centrifugal fan. The centrifugal fan and the fan motor are connected by belts and belt cars. It is not an important part, but because it is a general known technique, reference numerals and detailed description thereof will be omitted.

In addition, the suction unit 100 is divided into the air mixing unit 200 by the isolation frame 610 is configured so that only the outlet of the suction blower 120 communicates with the air mixing unit.

The air mixing part 200 is divided into a part in which the suction part 100 is in contact with a heat exchange part 300 in contact with the isolation frame 620 having the bypass damper 210 installed therein. The upper part of the case 500 in contact with the part 100 is provided with an indoor air outlet 210 through which some of the indoor air introduced from the suction part 100 is discharged, and a case of the part in contact with the heat exchange part 300 ( 500) On the upper side, an outdoor air inlet 230 through which fresh air is introduced is formed. Typically, about 30% of indoor air goes out through the indoor air outlet 210, and the remaining 70% of indoor air is mixed with 30% of outdoor air in the space part in contact with the heat exchanger through the bypass damper 210, thereby exchanging heat exchanger. 300 to be supplied.

The heat exchanger 300 is a coil-shaped heat exchanger 310 for heat-exchanging the mixed air mixed with a predetermined amount of indoor air and a predetermined amount of outdoor air introduced from the air mixing unit and the mixed air installed in front of the heat exchanger. The air filter 320 removes contaminants. In the heat exchange, the indoor air is cooled or heated by being connected to a heat pump installed outdoors to cool or heat up the introduced mixed air. At this time, the type of heat pump used may be a heat pump such as EHP using electricity or GHP using gas. EHP or GHP method is a well-known technique, so a detailed description thereof will be omitted.

Finally, the discharge unit 400 is formed on the case 500, the air outlet 420 for supplying the heat exchanged air in communication with the interior of the building, the discharge blower for forcibly discharging the heat exchanged air (Supply fan, 410). At this time, the discharge blower 410 is composed of a centrifugal fan and a fan motor for driving the centrifugal fan as described in the suction blower, the centrifugal fan and the fan motor is connected by a belt and a belt car. Similarly, since it is a known technique, reference numerals and descriptions thereof will be omitted.

FIG. 10 is an air flow diagram in a duct connected in the same direction as a blowing direction of a conventional discharge blower, and FIG. 11 is an air flow diagram in a duct connected in a direction intersecting with a blowing direction of a conventional discharge blower.

As shown in the drawing, generally, the blower (Supply fan, 410) of the air conditioner is composed of a centrifugal fan so that the blown air has a certain direction. That is, it has the same direction as the rotation direction of the centrifugal fan.

Of course, there is an air outlet 420, but may have a certain degree of linear blowing power, but if the length is long, the blowing direction proceeds up to the air outlet while hitting one side while being reversed to the other side, the basic direction itself is not removed. Moreover, the reversal in this direction also changes from time to time according to the output of the discharge blower, and is not a change in the air flow having any formation.

Therefore, if the discharge direction of the duct for this flow is in contact with the air outlet may be somewhat reduced pressure loss (see Fig. 10), but this also does not reduce the complete pressure loss, moreover if the direction is different, the pressure loss is larger (See Fig. 11).

Moreover, since the indoor duct connected to the actual air conditioner has various flow path designs and the flow path design can be changed on the spot according to the site conditions, the direction of the entrance of the duct cannot always be determined only in the same direction as the discharge blower. will be.

As a result, in case of having a discharge blower as in the prior art, due to the direction of the blow, the main flow of air collides at the direction change part of the duct, causing a pressure loss. Noise caused by eddy currents is generated.

However, it is also not easy to change the position of the air conditioner installed in a limited space or change the rotation direction of the discharge blower at a time according to the design of the indoor duct, and it is also located in the blowing direction of the discharge blower of the pre-installed air conditioner. Only according to the design of the duct flow path in a certain direction is also not so simple.

Due to this problem, it is common to install a discharge blower having a directivity for blowing. In this case, pressure loss and noise are generated as described above. Since it is not satisfied, in order to achieve the original target value, there is a problem that an overload is applied to the discharge blower of the air conditioner, and in this case, a vicious cycle in which pressure loss and noise increase becomes larger.

However, there is no device that solves these structural problems yet.

An object of the present invention for solving the above problems is to rectify the air flow of the discharge blower is supplied with a directional rectification to have a certain flow to remove the directionality and at the same time the direction of the duct is installed in a variety of air flow direction removed It is to provide an air conditioner having a discharge blower for reducing the pressure loss to give a direction that is in conformity with the pressure loss and blowing without the generation of pressure loss and noise.

The present invention to achieve the object as described above and to perform the problem for eliminating the drawbacks of the prior art comprises: a suction unit having a suction blower for sucking the indoor air; An air mixing part for discharging some of the indoor air sucked through the suction part and mixing the remaining air with the newly introduced outdoor air; A heat exchange part for heat-exchanging the air supplied from the air mixture part at a low or high temperature in the heat exchanger; In the air conditioner comprising a discharge unit having a discharge blower for reducing the heat-exchanged air to the room;

The blower air flow of the discharge blower is installed in the air outlet discharged to the duct connected to the room,
A rectifying unit for removing the directivity of the blowing air supplied from the discharge blower to have straightness;

A buffer for maintaining the straightness of the air flow past the rectifier; And

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It is achieved by providing an air conditioner having a discharge blower for reducing pressure loss, characterized in that it further comprises a direction changer for discharging the air flow passing through the buffer portion at a predetermined set direction and angle.

In one embodiment, the rectifying unit is characterized in that a plurality of rectifying pieces having a height in the form of a grid to guide the air flow passing through the straight flow.

Specifically, the lattice is characterized in that any one selected from a square grid, a circular grid, an elliptic grid.

In one embodiment, the buffer unit is characterized in that the one or more guide grooves arranged in the longitudinal direction in the circumferential direction of the inner surface is configured to have a linear orientation.

Specifically, the guide groove is characterized in that the center portion is processed convexly streamlined.

In one embodiment, the redirection unit is characterized in that consisting of a plurality of angle adjustment pieces installed to have a non-vertical angle.

In an embodiment, the angle adjusting piece is characterized in that it is configured in a fixed type.

In an embodiment, the angle adjusting piece is configured to be variable, the variable angle adjustment is to install a hinge for each one point (upper or lower) of the plurality of angle adjusting piece to rotate, the other point of the angle adjusting piece corresponding to the hinge. Another hinge is installed on the lower part or the upper part, and each hinge is connected by a link, and the angle is interlocked to adjust the link. Penetrating through the formed hole, characterized in that configured to be fixed with a nut at both ends.

In one embodiment, the hole is characterized in that configured to be adjusted to the height by processing the long hole.

In an embodiment, the turning part may form a protrusion in the circumferential direction of one end of the buffer part, and the turning part having the circumference of the inner surface groove processed by the shape of the protrusion may be pressed in the outer diameter direction of the buffer part so that the protrusion and the groove are made. It is characterized by consisting of a structure that is configured in this seating structure to rotate in the circumferential direction.

The present invention rectifies the air flow of the discharge blower to be supplied with a directional flow to have a constant flow to remove the directivity and at the same time induce the pressure loss and noise by directing in the same direction as the direction of the duct variously installed in the removed blow flow flow The advantage of being able to blow air without occurrence,

Regardless of the blowing direction of the discharge blower supplied from the air conditioner, the invention is a useful invention having the advantage of being able to variously design the flow path of the duct supplied to the room.

Hereinafter, the configuration and the operation of the embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram showing an entire system of an air conditioner equipped with a discharge blower having a rectifying part, a buffer part and a direction changing part according to an embodiment of the present invention, Figure 2 is a rectifying part according to an embodiment of the present invention, 3 is a perspective view illustrating a combination of a discharge blower equipped with a shock absorber and a redirection unit, and FIG. 3 is an exploded perspective view of a discharge blower equipped with a rectifier, a shock absorber, and a change direction according to an exemplary embodiment of the present invention.

As shown, the configuration of the present invention comprises a suction unit 100 having a suction blower 120 for sucking the indoor air; An air mixing part 200 which discharges some of the indoor air sucked through the suction part 100 and mixes the remaining air with the newly introduced outdoor air; A heat exchanger 300 for heat-exchanging the air supplied from the air mixing unit at a low or high temperature in the heat exchanger 310; A discharge unit 400 having a discharge blower 410 for reducing the heat-exchanged air to the room; is installed in the discharge direction of the discharge blower 410 of the air conditioner structure arranged in sequence to rectify the directional blower of the discharge blower It has a structure for supplying it in an arbitrary direction.

Specifically, the present invention has a rectifier 1 for removing the directionality of the blowing air supplied from the discharge blower 410. The rectifying part flows the directional airflow through a plurality of zones in order to change the flow of the directional airflow into a nondirectional directional flow, and the wind passing through the divided zone has a certain height. Flowing along the rectifying piece (2) configured to guide the straight flow was configured to lose the directivity. To this end, the rectifying part divides the space into a grid in which a rectifying piece is divided into a plurality of zones, and allows a directional wind to pass therethrough, thereby dividing a blower airflow having a small directionality into a small airflow having a small directionality. The airflow is again discharged after being converted into airflow having a constant flow that lost the direction while flowing along the rectifying piece.

In this case, the lattice form may be generally configured with various lattice such as square lattice, circular lattice, and elliptic lattice. In addition, the spacing between the rectifying pieces and the height of the rectifying pieces in the form of a lattice can be formed in various ways as appropriate. However, the grating should not be designed too tightly because the gap between the rectifying pieces is too narrow and the load on the airflow passing through them decreases the blowing pressure. Similarly, since the height of the rectifying piece is too low to remove the directivity of the discharge blower, it must have a height that at least loses directivity.

In other words, wire mesh with a gap in mm should be avoided because the gap is too narrow and has no height. It shall be formed with a minimum gap in cm and a height in cm. For example, if the gap is about 5cm, the height of the commutation piece is about 5cm, so it is good to remove the directionality without heavy load. However, these numbers are exemplary and the present invention is not limited to these numbers, and the actual lattice design may vary according to the blowing force of the discharge blower, and only the height of the rectifying piece that loses the direction without deteriorating such blowing force. Is enough.

In addition, the rectifier is installed in the air discharge port 420, which is the discharge port of the discharge blower, the coupling method is formed around the coupling bolt nut, or a coupling such as a flange may be used.

In addition, although the lower part of the rectifying part is illustrated as a circular cross section in accordance with an embodiment, the outlet of the discharge blower connected to the lower part is a polygonal shape such as a square or an ellipse shape that can be connected to it, that is, both cross-sectional shapes Inserting a pipe with a cross section that fits in can easily connect any shape pipe connection.

Next to the rectifying part 1, the buffer part 3 is provided. The reason why the shock absorber is provided is that if the direction changer is installed as soon as the rectifier is finished, a load or vortex may occur due to the rapid direction change of the air flow past the rectifier.

Therefore, the airflow divided into a plurality of airflows passing through the rectifying section has a flow having a straight air flow while having a single flow again, this role is the buffer portion (3).

The airflow introduced into the buffer part has one airflow as when it is discharged from the discharge blower, except that the airflow has no directivity. As such, the airflow having no directivity flows in the forward direction without collision or noise in the main flow direction to the open space regardless of the design direction of the duct 10 in contact with the airflow.

At this time, in order to maximize the straight air flow while having the performance of the buffer portion is arranged in the circumferential direction of the inner surface of the buffer portion, the shape can be configured to have a linear direction by installing a plurality of guide grooves 31 protruding in the longitudinal direction. . In addition, the lower entry portion of the guide groove is processed to reduce the load by tapering or round processing so as not to interfere with the incoming air flow.

In addition, in order to form a flow for rapid flow of air flow in the form of a guide groove can be processed in a convex streamline by applying a venturi tube shape.

In addition, when the shock absorbing part is installed in the rectifying part, the coupling method may be formed by using a bolt nut or a clamp or the like to form a circumferential flange.

Next to the buffer part 3, the direction change part 4 is installed. The reason for having the redirection unit may be connected directly to the duct 10, which is a flow path for cooling or heating air supplied along the blowing force of the discharge blower to the room, through which the airflow passing through the buffer part 3 is lost. Switching toward the design direction of the installed duct 10 can further reduce the load or noise that may occur at the main flow direction of the airflow and the initial contact point of the duct 10. Therefore, the air flow direction can be changed for smooth airflow. will be.

In order to have such a structure that is blown in one direction, the direction change unit 4 is provided with a plurality of angle adjusting pieces 5 are installed to have a non-vertical angle. Passing through the angle adjusting piece, that is, the air flow flowing from the buffer portion is bent at a certain angle to have a directionality.

The angle adjustment by the angle adjusting piece may use a fixed type in which the angle adjusting piece having a predetermined angle is integrally fixed to the direction switching unit, or may be spherical using an angle adjusting piece that can be varied at various angles.

The angle of the angle adjusting piece (5) should be careful when setting the angle with respect to the main flow direction of the air flow because the pressure loss does not occur because the load on the rising air flow. In order to direct the air flow, the angle of the discharge direction with respect to the main flow direction should be at least 180 degrees but smaller than 135 degrees. If the angle is less than 135 degrees, too sharp angle due to too sharp vortex and noise is generated, rather it is worse than not to change the direction.

However, if less than 180 at 135 degrees, the flow of air flows faster while giving a constant direction, and the air is blown quickly so that no pressure loss or noise occurs.

Specifically, in the case of using the variable angle adjusting piece, a hinge 6 is installed at each point (upper or lower) of the plurality of angle adjusting pieces 5 to rotate, and the angle adjusting piece 5 corresponds to the hinge. Install another hinge (6 ') at the other point of the lower (lower or upper), each hinge link (link, 7) by connecting the angle is configured to adjust.

In addition, the link penetrates through holes 8 formed at both ends of the redirection unit, and tightens the nuts 9 at both ends thereof. To this end, the holes 8 formed on both sides are processed by long holes to adjust the height of the link according to the angle change, and the nut 9 is formed by machining a thread to a certain length on both sides of the link. It is configured to be fastened and fixed by screwing the body of the turning part by screwing.

In this way, the direction change unit 4 having the angle adjusting piece 5 having an angle fixed or the angle adjusting piece 5 varying in angle is converted in accordance with the direction of the duct coupled thereto by changing the direction by rotation. The flow of air flow is switched according to the flow path of the duct.

The turning structure only needs to be able to rotate the turning part 4 assembled with the buffer part 3. Of course, the rotating means can be of various ways, such as air conditioning ducts, but in a member that acts as a flow path, rather than a special mechanical device, such as a rotary type, such as a belt type, motor type, gear type rotation means There's no need to do that, so it's enough to implement and rotate in a simple way.

To this end, in one embodiment of the present invention, by using the circumference of the buffer portion 3 and the interference direction turning portion 4 by turning to any desired angle, that is, the direction of the flow path of the duct. Referring to the fitted structure, the protrusion 11 is formed in the circumferential direction of one end of the buffer portion, and the turning portion having the periphery of the inner surface groove 12 processed according to the shape of the protrusion is applied in the outer diameter direction of the buffer portion. The protrusions and grooves should be seated to prevent interference. In this manner, when the food is rotated in a predetermined direction, the direction is not changed unless a large external force is applied.

If it is determined that the constant direction can not be maintained only by the interference fit, it is necessary to form a flange between the buffer portion and the direction switching portion to provide a bolt nut for coupling between the two flanges. That is, the lower flange forms a long hole in the circular direction, and a bolt is formed on the upper flange to rotate at an arbitrary angle, and when the angle is determined, the nut is filled with the bolt past the long hole and the lower flange is contacted with the nut and fixed. However, it is important to change the direction of the air flow in any direction is important in the direction change portion of the present invention, it is important to be able to adjust the angle of the air flow having a directionality, but the fixing method is not important.

Figure 4 is an exemplary view showing the operating structure of the direction change unit having a variable angle adjustment piece according to an embodiment of the present invention, the angle of the plurality of variable angle adjustment piece 5 by the movement of the link (7) is interlocked It can be seen that, after adjusting at a constant angle can be seen that the structure is maintained by adjusting the angle by tightening the nut on both sides of the link, the link can be seen that the height is changed up and down on the long hole.

Figure 5 is an illustration of an angle adjusting piece according to an embodiment applied to the turning part of the present invention, Figure 6 is an illustration of an angle adjusting piece according to another embodiment applied to the turning part of the present invention, the angle adjustment It can be seen that the convenience plane shape can be implemented in a rectangular shape or in an annular shape. In the annular implementation, the flow of the airflow is smoothly changed and the supply is regulated without any load.

7 is an exemplary view showing the flow of airflow according to the present invention, the airflow generated from the discharge blower passes through the rectifying portion, the directionality is removed, and the airflow from which the direction is removed passing through the rectifying portion is more straightened in the buffer portion The direction is completely removed, and it can be seen that it flows toward the open flow path of the duct while having a certain direction along the direction of the flow path installation of the duct while passing through the turning part.

Figure 8 is an exemplary view showing a variety of duct design angles coupled to the discharge blower according to the present invention, it knows that the air flow smoothly flows in the same direction irrespective of the direction of the various ducts designed according to the rotation of the turning part of the present invention Due to this, it can be seen that various duct designs are possible irrespective of the installation position of the air conditioner discharge blower, and since such a structure is possible, there is no load in the main flow direction, so that the vortex generation in the angle change part is caused. It can be seen that the air flow flows without any pressure loss and noise generation on the blowing force of the discharge blower.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is a block diagram showing an overall system of an air conditioner equipped with a discharge blower having a rectifying part, a buffer part, and a turning part according to an embodiment of the present invention;

2 is a perspective view showing a combination of a discharge blower equipped with a rectifying part, a buffer part, and a turning part according to an embodiment of the present invention;

3 is an exploded perspective view of a discharge blower equipped with a rectifying part, a buffer part, and a turning part according to an embodiment of the present invention;

Figure 4 is an exemplary view showing the operation structure of the redirection unit having a variable angle adjustment piece according to an embodiment of the present invention,

Figure 5 is an illustration of the angle adjusting piece according to an embodiment applied to the turning part of the present invention,

Figure 6 is an illustration of an angle adjusting piece according to another embodiment applied to the turning part of the present invention,

7 is an exemplary view showing the flow of airflow according to the present invention,

8 is an exemplary view showing various duct design angles coupled to the discharge blower according to the present invention,

9 is a block diagram showing an embodiment of a conventional air conditioner,

10 is an air flow diagram in a duct connected in the same direction as a blowing direction of a conventional discharge blower,

11 is an air flow diagram in a duct connected in a direction intersecting a blowing direction of a conventional discharge blower.

<Description of the symbols for the main parts of the drawings>

(1): rectification part (2): rectification part

(3): buffer part (4): direction change part

(5): Angle adjusting piece (6, 6 '): Hinge

(7): Link (8): Hall

9: Nut 10: Duct

(11): protrusions 12: groove

(31): guide groove (410): discharge blower

Claims (10)

A suction part 100 having a suction blower 120 for suctioning indoor air; An air mixing part 200 which discharges some of the indoor air sucked through the suction part 100 and mixes the remaining air with the newly introduced outdoor air; A heat exchanger 300 for heat-exchanging the air supplied from the air mixing unit at a low or high temperature in the heat exchanger 310; In the air conditioner, the discharge unit 400 having a discharge blower 410 for reducing the heat-exchanged air into the room; The blower air flow of the discharge blower 410 is installed in the air discharge port 420 discharged to the duct 10 connected to the room, A rectifier 1 for removing the directivity of the blowing air supplied from the discharge blower to have straightness; A buffer part 3 for maintaining the straightness of the air flow past the rectifying part; And An air conditioner with a pressure blower for reducing pressure loss, characterized in that it further comprises a direction changer (4) for discharging the air flow passing through the buffer portion at any set direction and angle. The method according to claim 1, The rectifier 1 is provided with a plurality of rectifying pieces (2) having a height in the form of a grid so as to guide the air flow passing through a straight flow flow air conditioner provided with a discharge blower for reducing pressure loss. The method according to claim 2, The lattice is an air conditioner having a discharge blower for reducing pressure loss, characterized in that any one selected from a square grid, a circular grid, an elliptic grid. The method according to claim 1, The buffer unit (3) is an air conditioner having a discharge blower for reducing pressure loss, characterized in that the one or more guide grooves 31 are arranged in the longitudinal direction in the circumferential direction of the inner surface to have a linear directivity. The method according to claim 4, The guide groove is an air conditioner having a discharge blower for reducing pressure loss, characterized in that the center portion is processed convexly streamlined. The method according to claim 1, The direction change unit (4) is an air conditioner having a discharge blower for reducing pressure loss, characterized in that composed of a plurality of angle adjustment pieces (5) installed to have a non-vertical angle. The method according to claim 6, The angle adjusting piece (5) is an air conditioner having a discharge blower for reducing pressure loss, characterized in that the fixed configuration. The method according to claim 6, The angle adjusting piece 5 is configured in a variable type, variable angle adjustment is to install a hinge (6) for each one point (upper or lower) of the plurality of angle adjusting piece (5) to rotate, corresponding to the hinge Install another hinge (6 ') at the other point (lower or upper) of the angle adjusting piece (5), connecting each hinge by a link (link, 7) to configure the angle is interlocked to adjust, both sides The air-conditioned air conditioner with a discharge blower for reducing pressure loss, characterized in that the link is threaded to a predetermined length through a hole (8) formed at both ends of the direction change section to be fixed by a nut (9) at both ends. group. The method according to claim 8, The hole (8) is an air conditioner provided with a discharge blower for reducing the pressure loss, characterized in that configured to be adjusted in height by processing the long hole. The method according to claim 1, The turning part 4 forms a protrusion in the circumferential direction of one end portion of the buffer part, and the turning part having a circumference of the inner surface portion groove processed according to the shape of the protrusion part is pressed in the outer diameter direction of the buffer part so that the protrusion and the groove are made. The air conditioner provided with the discharge blower for pressure loss reduction characterized by consisting of this structure to be seated and rotated in the circumferential direction.

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