KR20130039843A - Air conditioner - Google Patents

Abstract

PURPOSE: An air conditioner is provided to improve the efficiency of an axial flow fan by increasing the inverse direction component of rotation velocity and removing the component of rotation velocity through a discharging passage guide. CONSTITUTION: An air conditioner comprises a housing, a compressor, a heat exchanger, a blower fan(140), a motor, and a discharging passage guide(200). The blower fan discharges air through an outlet. The motor is mounted inside the housing and rotates the blower fan. The discharging passage guide applies the inverse direction component of rotation velocity which is generated by the rotation of the blower fan to air discharged from the blower fan. [Reference numerals] (AA) Axial direction; (BB) Rotation direction;

Description

Air Conditioner

The present invention relates to an air conditioner, and more particularly, to an air conditioner capable of increasing the efficiency and installation space utilization of a blowing fan.

In general, an air conditioner is a device for cooling or heating an indoor space such as a living space, a restaurant, or an office.

The air conditioner basically includes a refrigeration cycle including a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger. Looking at the refrigeration cycle in detail, the gas refrigerant compressed in the compressor is introduced into the outdoor heat exchanger to phase change into a liquid refrigerant, the refrigerant in the outdoor heat exchanger phase changes to release heat to the outside, after The refrigerant discharged from the outdoor heat exchanger is expanded through the expansion valve and flows into the indoor heat exchanger.

Thereafter, the liquid refrigerant introduced into the indoor heat exchanger is changed into a gas refrigerant. Similarly, the refrigerant absorbs external heat while changing phase in the indoor heat exchanger.

The air conditioner may include an outdoor unit installed in an outdoor space and an indoor unit installed in an indoor space. The outdoor unit includes a compressor for compressing a refrigerant, an outdoor heat exchanger and a blower fan for heat exchange between the outdoor air and the refrigerant, and It includes various piping for connecting the compressor and the indoor unit, the indoor unit may include an indoor heat exchanger and expansion valve for heat exchange between the indoor air and the refrigerant.

On the other hand, the outdoor unit connected to the plurality of indoor units is equipped with a large outdoor heat exchanger in order to increase the heat exchange area therein, a compressor, an oil separator and an accumulator for refrigerant circulating the air conditioning cycle is equipped with a blowing fan for forced flow And a motor for rotating the blower fan, and a plurality of pipes for connection to each component and the indoor unit are accommodated.

1 is a conceptual diagram illustrating a speed triangle of an axial flow fan mounted to an outdoor unit constituting a conventional air conditioner.

Referring to FIG. 1, W1 denotes a relative speed of air flowing into the axial fan 10, W2 denotes a relative speed of air discharged into the axial fan 10, and u denotes a rotational speed of the blade of the axial fan. Where V1 represents the absolute velocity of the incoming air, V2 represents the absolute velocity of the discharged air, Vm2 represents the axial velocity component of the axial fan 10, and β1 and β2 represent the inlet angle of the blade 11. Each exit angle is shown.

The axial flow fan 10 generates the flow in the axial direction, and the rotational speed component Vu2 generated by the rotation of the axial flow fan 10 among the speed components u discharged from the axial flow fan 10 is the axial flow fan 10. Corresponds to the loss occurring irrespective of the work, and decreases the efficiency of the axial fan (10).

The present invention is to solve the problem to provide an air conditioner that can increase the efficiency and installation space utilization of the blowing fan.

In order to solve the above problems, according to an aspect of the present invention, to discharge the air introduced through the housing having the inlet and the discharge port, the compressor disposed inside the housing and the heat exchanger and the intake port disposed inside the housing through the discharge port And a discharge fan mounted inside the housing for distributing a speed component opposite to the revolution speed component generated by the rotation of the blow fan to the air discharged from the motor and the fan to rotate the blow fan. An air conditioner including a flow guide is provided.

In addition, the discharge flow guide may include a plurality of vanes.

In addition, the vanes may be inclined in the rotation direction of the blowing fan.

In addition, the vane may have an inclination opposite to the inclination of the blade of the blowing fan based on the central axis of the blowing fan.

In addition, the vanes may have a streamline shape, a straight line shape, or a combination of streamline and straight lines.

In addition, the vane may be formed such that the inclination angle of the inlet end with respect to the central axis of the blowing fan is greater than the inclination angle of the discharge end.

The blowing fan may also be an axial fan.

In addition, the air conditioner further includes a discharge grill mounted to the discharge port of the housing, the discharge flow guide may be disposed in the space between the discharge grill and the blowing fan.

In addition, the discharge flow guide may be provided on the mounting member and the outer peripheral surface of the mounting member, and may include a plurality of vanes inclined in the rotational direction of the blowing fan.

The air conditioner may further include a discharge grille mounted at the discharge port of the housing, and the discharge flow guide may be integrally formed with the discharge grille.

In addition, the discharge grill includes a plurality of ribs extending along the radial direction, the rib may be inclined in the rotation direction of the blowing fan.

As described above, the air conditioner according to an embodiment of the present invention has high efficiency and installation space utilization of the blowing fan.

1 is a conceptual diagram showing a speed triangle of the axial flow fan mounted to the outdoor unit constituting the conventional air conditioner.
2 is a perspective view showing an air conditioner according to an embodiment of the present invention.
3 is a perspective view of the air conditioner shown in FIG.
Figure 4 is an exploded perspective view showing the main components of the air conditioner shown in FIG.
5 is a conceptual diagram for explaining an operation state of the discharge flow guide constituting the air conditioner related to an embodiment of the present invention.
6 and 7 are a perspective view of main parts for explaining various embodiments of the discharge passage guide constituting the air conditioner according to an embodiment of the present invention.

Hereinafter, an air conditioner according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, irrespective of the reference numerals, the same or corresponding components will be given the same reference numerals, and redundant description thereof will be omitted. For convenience of description, the size and shape of each component may be exaggerated or reduced. have.

On the other hand, terms including an ordinal number such as a first or a second may be used to describe various elements, but the constituent elements are not limited by the terms, and the terms may refer to a constituent element from another constituent element It is used only for the purpose of discrimination.

FIG. 2 is a perspective view illustrating an air conditioner according to an embodiment of the present invention, FIG. 3 is a perspective view of the air conditioner shown in FIG. 2, and FIG. 4 shows a main component of the air conditioner shown in FIG. 2. It is the separated perspective view which shows.

The overall components of the air conditioner related to an embodiment of the present invention will be described.

2 and 3, the air conditioner may include an outdoor unit 100 installed in an outdoor space and an indoor unit (not shown) installed in an indoor space, and refers only to the outdoor unit 100. Can be used. Hereinafter, for convenience, the air conditioner will be described as referring to the outdoor unit 100.

The outdoor unit 100 includes a housing 110 forming an exterior, an outdoor heat exchanger 120 (hereinafter, referred to as a heat exchanger) for heat exchange between outdoor air and a refrigerant, a compressor 130 and a blower fan 140 for compressing a refrigerant; The motor 150 for the rotation of the blowing fan 140 and the various pipes 160 through which the refrigerant flows.

In addition, the indoor unit may include an indoor heat exchanger and an expansion valve for heat exchange between the indoor air and the refrigerant, and for convenience of description, FIGS. 2 and 3 illustrate only the outdoor unit of the air conditioner.

The housing 110 has an inlet 111 and an outlet 112, the inlet 111 may be formed on one side (for example, the front) of the housing 110, the outlet 112 It may be formed on the upper surface of the housing 110, the suction grill 113 and the discharge grill 114 may be mounted on the inlet 111 and discharge port 112 side of the housing 110, respectively, One or more filters (not shown) may be disposed on the intake port 111 side.

In addition, the housing 110 may have a polyhedron shape, may include a plurality of side frames, an upper frame 110a and a lower frame, and may have a structure in which each frame is assembled or integrally formed.

The heat exchanger 120 is mounted inside the housing 110, and is provided at the outlet of the compressor 120 and the compressor 120 for the refrigerant circulating the air conditioning cycle, and after filtering the oil contained in the refrigerant, An oil separator (unsigned) for recovering back to the compressor 120 and an inlet side of the compressor 120, and an accumulator (unsigned) for filtering only the liquid refrigerant and introducing a gaseous refrigerant into the compressor. ) May be mounted.

In addition, the housing 110 may be equipped with a four-way valve (not shown) for switching the flow direction of the refrigerant in accordance with the switching of the heating and cooling operation therein, a plurality of components for connecting each component and the indoor unit Tubing 160 is received.

In this case, the heat exchanger 120 may be disposed on the intake port 111 side of the housing 110 to increase the heat exchange area, and the motor 150 may be disposed on the discharge port 112 side of the housing 110. .

Referring to FIG. 4, the housing 110 may be provided with a motor mounting unit 115 for mounting the motor 150. The motor mounting unit 115 may be mounted at the discharge port 112 side of the housing 110, and the motor mounting unit 115 may include a plurality of bars spaced at predetermined intervals. The motor mounting unit 115 may have a "H" shape or a ladder shape.

The motor 150 may be stably fixed to the motor mounting unit 115. For example, a pair of mounting brackets (not shown) may be provided at the lower end of the motor 150.

3 and 4, the blowing fan 140 may be an axial fan mounted on the motor 150 to generate an axial flow, and the shroud 142 may surround the blowing fan 140. May be provided. In addition, the discharge grill 114 may be mounted on the upper frame 110a of the housing 110. Hereinafter, the blower fan 140 will be described as being an axial fan.

Here, the motor 140 and the blowing fan 150 are disposed in the upper space of the housing 110 based on the motor mounting unit 115, and the compressor 130 and various pipes 160 are disposed in the lower space. In addition, in order to reduce the overall size and increase the space utilization, the respective components are arranged in the lower space of the housing 110, the heat exchanger 120 is disposed in the side edge portion of the housing 110.

FIG. 5 is a conceptual view illustrating an operation state of a discharge flow path guard constituting an air conditioner according to an embodiment of the present invention.

As described with reference to FIG. 1, the rotation speed component Vu2 generated by the rotation of the axial fan 10 among the speed components u discharged from the axial fan 10 is independent of the work of the axial fan 10. Corresponds to the loss that occurs, and decreases the efficiency of the axial fan (10).

The air conditioner 100 according to an embodiment of the present invention has a speed component opposite to the revolution speed component u generated by the rotation of the blowing fan 140 to the air discharged from the blowing fan 140 ( And a discharge flow guide 200 for imparting Vu1).

Referring to FIG. 5, W1 represents a relative speed of air flowing into the axial fan, W2 represents a relative speed of air discharged into the axial fan, and u represents a rotational speed of the blade 141 of the axial fan 140. V1 represents the absolute velocity of the air flowing into the axial fan 140, V2 represents the absolute velocity of the air discharged from the axial fan 140, V3 represents the absolute velocity of the air discharged from the discharge flow guide 200 Indicates speed.

In addition, Vm2 represents the axial velocity component of the air discharged from the axial fan, and β1 and β2 represent the inlet and outlet angles of the blade, respectively.

The discharge flow guide 200 may include a plurality of vanes 210 for generating a flow in a specific direction in the air discharged from the axial fan 140.

In this case, the vane 210 is configured to impart a speed component Vu3 opposite to the revolution speed component u generated by the rotation of the axial fan 140 to the air discharged from the axial fan 140. It is preferable to incline in the rotational direction of the axial fan 140.

Specifically, the vane 210 may be inclined in a direction opposite to the inclination of the blade 141 of the axial fan 140 on the basis of the central axis of the axial fan 140, the central axis of the axial fan 140 The inclination angle of the inflow end with respect to may be greater than the inclination angle of the discharge end.

In addition, the vane 210 may have a streamlined shape, a straight line shape, or a combination of streamlined and straight lines.

Referring to the speed triangle of the axial fan 140 shown in FIG. 5, the air passing through the discharge inlet flow guide 200 passes through the vane 210 in the process of passing through the vane 210. The speed component Vu3 in the opposite direction of the revolution speed component u generated by the rotation of the axial fan 140 of 140 is provided.

Thereafter, the air passing through the discharge flow guide 200 has the same speed V3 as the axial speed component Vm2 of the absolute speed V2 of the air discharged from the axial fan 141.

As described above, according to the air conditioner 100 according to the embodiment of the present invention, the discharge flow path guide 200 is mounted on the discharge port side of the axial fan 140 to discharge flow of the axial fan 140. If the speed component in the opposite direction of rotation of the axial fan 140 is increased, the rotational speed component Vu2 due to the rotation of the axial fan 140 disappears in the discharge flow of the axial fan 140, thereby increasing the efficiency of the axial fan 140. Can increase.

Hereinafter, a structure for mounting the discharge flow guide 200 in the housing 100 will be described in detail with reference to the accompanying drawings.

6 and 7 are a perspective view of main parts for explaining various embodiments of the discharge passage guide constituting the air conditioner according to an embodiment of the present invention.

As described above, the discharge inflow passage guide 200 is preferably disposed on the discharge port side of the axial fan 140. In addition, the component parts are arranged in a lower space of the housing 110 based on the motor mounting unit 115, a heat exchanger 120 is disposed at a side edge portion of the housing 110, and the housing 110. In the upper space of the motor 150, the axial flow fan 150, the upper frame (110a) and the discharge grill 114 is disposed.

In an embodiment, the discharge flow guide 200 may be disposed in a space between the axial fan 150 and the discharge grill 114.

Referring to FIG. 6, the discharge flow guide 200 is provided on the mounting member 220 mounted on the axial flow fan 150 or the discharge grill 114 and an outer circumferential surface of the mounting member 220. It may include a plurality of vanes 210 inclined in the rotation direction of the fan 150.

In addition, as described above, the vane 210 may be inclined in a direction opposite to the inclination of the blade 141 of the axial fan 140 based on the central axis of the axial fan 140, and the axial fan 140 may be inclined. The inclination angle of the inlet end with respect to the central axis of the may be formed larger than the inclination angle of the discharge end, the vane 210 may have a streamlined, straight or a combination of streamlined and straight.

At this time, the mounting member 220 may have a cylindrical shape or a ring shape, the mounting member 200 of the discharge grill 114 or the axial fan 140 to be located in the interior space of the discharge grill 114. It can be fixed to the upper end.

In addition, the number and size of the vanes 210 may be variously determined according to the capacity of the blowing fan 140.

In this structure, as the discharge flow path guide 200 is positioned at the discharge port side of the axial fan 140, the air discharged from the axial flow fan 140 in the course of passing through the discharge flow path guide 200 includes an axial fan ( Since the speed component in the direction opposite to the rotation of the 140 is provided, the revolution speed component Vu2 due to the rotation of the axial fan 140 disappears in the discharge flow of the axial fan 140.

In addition, by installing the discharge flow guide 200 on the upper end of the blower fan 140 or the inner peripheral surface of the discharge grill 114 without using a separate bracket, it is possible to increase the space utilization inside the housing 110, Reduce costs

Alternatively, referring to FIG. 7, the discharge flow guide 200 may be integrally formed with the discharge grill 114.

The discharge grill 114 may have a variety of shapes, for example, a plurality of ribs 114b extending in a direction penetrating through the ring members 114a having different diameters and the adjacent ring members, that is, in a radial direction. It may include.

In this case, the rib 114b may be formed to perform the same function as the vane 210 of the discharge flow guide 200 described above. Specifically, the rib 114b may be formed in the rotational direction of the axial fan 140. It may be inclined, inclined in a direction opposite to the inclination of the blade 141 of the axial fan 140 with respect to the central axis of the axial flow fan 140, the inlet end with respect to the central axis of the axial flow fan 140 The inclination angle of may be formed larger than the inclination angle of the discharge end, the rib (114b) may have a shape of a streamlined, straight or a combination of streamline and straight.

In this structure, as the discharge flow path guide 200 is positioned at the discharge port side of the axial fan 140, the air discharged from the axial flow fan 140 in the course of passing through the discharge flow path guide 200 includes an axial fan ( Since the speed component in the direction opposite to the rotation of the 140 is provided, the revolution speed component Vu2 due to the rotation of the axial fan 140 disappears in the discharge flow of the axial fan 140.

In addition, since the discharge flow guide 200 is integrally formed in a portion of the discharge grill 114 (for example, ribs) without using a separate bracket, the space utilization inside the housing 110 may be increased. The manufacturing cost can be reduced.

As described above, the air conditioner according to an embodiment of the present invention has a high efficiency of the blowing fan and excellent installation space utilization.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having various ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. And additions should be considered to be within the scope of the following claims.

100: air conditioning unit 110: housing
111: intake port 112: discharge port
115: motor mounting portion 120: heat exchanger
130: compressor 140: blowing fan
150: motor 160: piping
200: discharge flow guide

Claims (11)

A housing having an intake port and a discharge port;
A compressor disposed inside the housing;
A heat exchanger disposed inside the housing;
A blowing fan for discharging air introduced through the intake port through the discharge port;
A motor mounted inside the housing and configured to rotate the blowing fan; And
And a discharge flow path guide for imparting a speed component opposite to the revolution speed component generated by the rotation of the blow fan to the air discharged from the blow fan. The method of claim 1,
The discharge flow guide is an air conditioner, characterized in that it comprises a plurality of vanes. 3. The method of claim 2,
The vane is air conditioning apparatus, characterized in that inclined in the rotational direction of the blowing fan. 3. The method of claim 2,
The vane has an inclination in the direction opposite to the inclination of the blade of the blowing fan. The method according to claim 3 or 4,
The vane has a streamlined, straight or a combination of the streamline and the straight air conditioner, characterized in that the shape. 3. The method of claim 2,
The vane is an air conditioner, characterized in that the inclination angle of the inlet end with respect to the central axis of the blowing fan is formed larger than the inclination angle of the discharge end. 3. The method of claim 2,
Blowing fan is an air conditioning apparatus, characterized in that the axial flow fan. The method of claim 1,
Further comprising a discharge grill mounted to the discharge port of the housing,
And the discharge flow path guide is disposed in a space between the discharge grill and the blowing fan. The method of claim 8, wherein the discharge flow guide,
Mounting member; And
And a plurality of vanes provided on an outer circumferential surface of the mounting member and inclined in a rotational direction of the blowing fan. The method of claim 1,
Further comprising a discharge grill mounted to the discharge port of the housing,
And the discharge flow path guide is integrally formed with the discharge grill. 11. The method of claim 10,
The discharge grill includes a plurality of ribs extending along the radial direction,
And the rib is inclined in a rotational direction of the blowing fan.

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