KR200223926Y1 - Scew type cross flow fan for air conditioner inner part - Google Patents

Abstract

The present invention has a plurality of blades twisted to have an inclination angle with respect to the rotating shaft (6) to be rotated by a blower motor while being installed on the inner top of the main body (1) of the rectangular indoor unit having the air outlet (2) formed in the lower front of the outer case ( In the skew type crossflow fan for an indoor unit of an air conditioner having 5a) arranged in a circumferential direction, the blade 5a is symmetrical with respect to the center of the crossflow fan 5a to have an inclination angle of a predetermined angle. The flow of air is to be evenly discharged in both directions without bias in one direction.

Description

Skew type cross flow fan for air conditioner inner part}

The present invention relates to a skew type crossflow fan for an indoor unit of an air conditioner, and more specifically, in a skew type crossflow fan installed in a blower of a wall-mounted air conditioner indoor unit, one side of the blade is arranged symmetrically with respect to the center. It relates to a skew type cross-flow fan for the indoor unit of the air conditioner to improve the deviation of the discharge air flow in the direction.

In general, an air conditioner uses a cooling cycle to liquefy refrigerant gas compressed at a high temperature and high pressure in a compressor in a condenser, and changes a liquid refrigerant to a low temperature and a low pressure in an expansion valve, and then cools it by evaporation heat in an evaporator. By performing the, it is based on the air conditioning to maintain the temperature suitable for the activity by supplying cold air to the closed indoor space, such as the office, room or building interior in hot summer weather.

These air conditioners are classified into various types according to the function or the configuration of the unit. In the classification by functions, they can be classified into cooling only, cooling and dehumidifying only, cooling and heating.

In addition, in the classification of the unit configuration, the air conditioner is divided into an integrated air conditioner installed in a window or the like by integrating cooling and heat dissipation functions, and a separate type air conditioner that separates and installs a cooling device in an indoor space and a heat radiating and compression device in an outdoor space.

That is, according to the classification by the unit, the air conditioner is roughly divided into an integral type in which each component is built in a cabinet, a separate type consisting of an indoor unit having an evaporator and an outdoor unit having a compressor and a condenser.

The representative of the former is a window air conditioner, the latter is a wall-mounted and packaged air conditioner.

In particular, the structure of the wall-mounted air conditioner, which is one of the separate air conditioners, is divided into the indoor unit (A) and the outdoor unit (B), as shown in FIG. 1, and the refrigerant flows through the wall (W) or the window. It is connected to the suction and discharge pipe (C) for.

Here, as shown in (a) and (b) of the wall-mounted air conditioner indoor unit, a rectangular indoor unit having an air inlet (2) formed on the front and forming an air outlet (3) in the lower portion of the outer case The main body 1, the crossflow fan 4 rotated by the blower motor installed in the upper end of the indoor unit main body 1, and the heat exchanger (not shown) provided in the front part are comprised.

At this time, the cross-flow fan (4), as shown in Figure 3 (a), (b), by rotating the shaft 6 to the blower motor axially rotated in one direction, a predetermined interval in the circumferential direction In addition, the plurality of blades 5 extending horizontally in the axial direction are coupled to each other by fixing the ring-shaped diaphragm 7.

That is, the skew type crossflow fan 4 according to the prior art has a predetermined interval in the circumferential direction of the ring 5 in a twisted state with a predetermined angle of inclination of the blades 5 at a constant size relative to the axial direction of the rotating shaft 6. It is fixed to the diaphragm 7 of a shape.

This crossflow fan 4 rotates with the rotational force of the blower motor transmitted through the rotating shaft 6, and generates a predetermined amount of wind due to the difference in dynamic pressure in the respective blades 5 rotating in this way.

Here, the skew type crossflow fan 4 is a kind of excellent blowing fan that ensures the noise characteristics and performance of the fan by the arrangement of the twisted blades 5.

However, the conventional skew type crossflow fan 4 formed as described above is twisted only in one direction when rotating about the rotation shaft 6 as shown in FIGS. 3A and 3B. Due to the rotation of the blade 5, the flow direction b of the discharged air is biased to one side.

This bias acts as a factor of inhibiting rapid cooling of the wall-mounted air conditioner indoor unit, and has a disadvantage in that it does not uniformly supply uniform cold air to the interior of the indoor unit, and may adversely affect indoor unit heat exchange compared to uniform air flow. In addition, there is room for the air conditioner user to think that the quality of the product is poor.

Accordingly, an object of the present invention is to solve the problems described above, the blade of the skew cross-flow fan has a predetermined inclination angle and is arranged symmetrically with respect to the center of the discharge air in one direction The present invention provides a skew-type cross-flow fan for an indoor unit of an air conditioner that induces a uniform air flow at an indoor unit discharge port to uniformly supply cold air to an indoor interior by improving flow bias.

In addition, the present invention has another object to expand the air discharge port of the indoor unit to the left and right side in addition to the above object to evenly escape the air diffused by the crossflow fan to the left and right sides.

1 is a schematic view for explaining the configuration of a typical wall-mounted air conditioner,

2 (a), (b) is a front view and a side view for explaining the indoor unit of a typical wall-mounted air conditioner,

3 (a), (b) is a front view and a side view for explaining the configuration of the skew-type cross-flow fan according to the prior art,

4 (a), (b) is a front view and a side view for explaining the indoor unit of the wall-mounted air conditioner according to the present invention,

Figure 5 is a front view for explaining the configuration of the skew type crossflow fan according to the present invention.

* Description of the symbols for the main parts of the drawings *

1 body 2 air intake port

3: air discharge port 4, 4a: cross flow fan

5, 5a: blade 6: rotation axis

7: diaphragm

The present invention for achieving the object as described above is a plurality of blades twisted to have an inclination angle with respect to the axis of rotation so as to be rotated by the blower motor while being installed on the top of the inside of the rectangular indoor unit main body having an air outlet in the lower front of the outer case In the skew type crossflow fan for an indoor unit of the air conditioner arranged in the direction, characterized in that the blade is symmetrical with respect to the center of the skew type crossflow fan is configured to have a predetermined angle of inclination angle.

In addition, the air discharge port of the indoor unit is extended to the left and right side, characterized in that the air diffused by the skew-type cross-flow fan is evenly escaped to the left and right sides.

Hereinafter, the skew-type cross-flow fan of the wall-mounted air conditioner indoor unit according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 4A, 5B, and 5.

At this time, the skew-type cross-flow fan according to the present invention described in this embodiment is configured while having a predetermined angle of inclination angle of the blade configured to have a predetermined interval in the horizontal direction symmetrically with respect to the center of the cross-flow fan. Except that it is essentially the same as the prior art.

Therefore, the same or similar reference numerals will be given to the same or corresponding components in FIGS. 1 to 3 (a) and (b).

Here, Figure 4 is a front view and a partially cut side view showing a wall-mounted air conditioner according to the present invention, Figure 5 (a), (b) is a front for explaining the configuration of the skew-type cross-flow fan according to the present invention Fig. And side view.

First, as shown in Figure 4, the wall-mounted air conditioner indoor unit according to the present invention to form an outer case, the air inlet (2) is formed on the front, the rectangular indoor unit main body having an air outlet (3) formed on the bottom ( 1), a cross-flow fan 4a rotated by a blower motor installed at the upper end of the indoor unit main body 1, and a heat exchanger (not shown) installed at the front part thereof is configured as a conventional configuration. same.

However, the present invention, as shown in Figure 5 (a), (b), to configure the inclination of the blades 5a of the crossflow fan (4a) symmetrically with respect to the center of the crossflow fan (4a) It has a feature that is different from the conventional.

That is, in more detail, the blades 5a of the crossflow fan 4a rotated by the blowing fan motor are arranged in a twisted shape to have a predetermined inclination angle with respect to the rotation shaft 6 and a ring-shaped plate. (7) is configured to be arranged at a predetermined interval in the circumferential direction, the inclination of the blades (5a) is configured to be symmetrical with respect to the center of the cross-flow fan (4a).

Therefore, when the air conditioner is driven, the skew type crossflow fan 4a according to the present invention rotates to suck the indoor air, and the sucked indoor air is heat-exchanged in the evaporator and discharged into the room.

At this time, the flow of cold air discharged due to the symmetrical torsional inclination of the blades 5a is diffused in both directions without biasing in one direction to flow the cold air evenly.

In the present invention, the air outlet 3 of the indoor unit is extended to the left and right sides so that the air diffused by the skew type crossflow fan 4a is more evenly discharged to the left and right sides. .

As described above, according to the present invention, the skew type crossflow fan of the present invention is configured to symmetrically form the blades, thereby effectively cooling the indoor space as cold air is uniformly discharged in both directions without biasing to one side. There is an advantage.

Claims (2)

Skew type cross-flow for indoor unit of air conditioner installed in the upper part of the main body of the rectangular indoor unit having an air outlet at the bottom of the outer case and arranged in a circumferential direction with a plurality of blades twisted to have an inclination angle with respect to the rotation axis to be rotated by the blower motor. In the fan, Skew type cross-flow fan for the indoor unit of the air conditioner, characterized in that the blade is symmetrical with respect to the center of the skew-type cross-flow fan configured to have an inclination angle of a predetermined angle. The method of claim 1, Skew type cross-flow fan for the indoor unit of the air conditioner characterized in that the air discharge port of the indoor unit is extended to the left and right sides, the air diffused by the skew-type cross-flow fan evenly escapes to the left and right expansion portion.