KR102522048B1 - Ceiling type air conditioner - Google Patents

Abstract

The present invention relates to a ceiling type air conditioner. The ceiling type air conditioner according to the present embodiment includes an orifice formed with an air flow passage for guiding air introduced into an air flow inlet by a control unit to a blowing fan, and the air flow passage is adjacent to the inlet. An inlet end forming one end of the air flow passage, an outlet end forming the other end of the air flow passage adjacent to the blowing fan, and a flow guide part connecting the inlet end and the outlet end are included. At this time, the inlet end includes a first curved portion having a first radius and a variable portion disposed between the first curved portions and having a smaller radius than the first radius.

Description

Ceiling type air conditioner {CEILING TYPE AIR CONDITIONER}

The present invention relates to a ceiling type air conditioner.

An air conditioner is a device for maintaining the air in a predetermined space in the most suitable condition according to the use and purpose. In general, the air conditioner includes a compressor, a condenser, an expansion device, and an evaporator, and a refrigeration cycle that performs compression, condensation, expansion, and evaporation of refrigerant is driven to cool or heat the predetermined space. .

The predetermined space may be proposed in various ways according to a place where the air conditioner is used. For example, when the air conditioner is disposed in a home or office, the predetermined space may be an indoor space of the house or building.

When the air conditioner performs a cooling operation, the outdoor heat exchanger included in the outdoor unit functions as a condenser and the indoor heat exchanger included in the indoor unit functions as an evaporator. On the other hand, when the air conditioner performs a heating operation, the indoor heat exchanger functions as a condenser and the outdoor heat exchanger functions as an evaporator.

The air conditioner may be classified into an upright type, a wall-mounted type, or a ceiling type according to an installation location. The upright type air conditioner is a type of air conditioner installed to stand in an indoor space, and the wall-mounted type air conditioner is understood to be a type of air conditioner installed to be attached to a wall surface.

And, the ceiling-type air conditioner is understood as a type of air conditioner installed on the ceiling. For example, the ceiling type air conditioner includes a casing embedded in the ceiling and a panel coupled to a lower side of the casing and forming a suction port and a discharge port.

In relation to such a ceiling type air conditioner, the present applicant has filed and published the following prior literature.

<Prior Document 1>

1. Publication number: 10-2017-0143318 (publication date: December 29, 2017)

2. Title of Invention: Ceiling type air conditioner

In addition, as disclosed in Prior Document 1, various devices such as a blowing fan for forming air flow and an orifice for guiding air flow with the blowing fan are installed in the casing. In addition, a control unit for controlling various configurations is installed inside the casing.

At this time, the control unit is installed on one side of the casing in its shape and configuration, and there is a problem in that the flow of air is obstructed. In detail, there is a problem in that interference occurs due to the control unit, and turbulence and noise increase. In addition, there was a problem in that the overall efficiency was lowered because the flow of air in the part where the control unit was installed was not smooth.

In order to solve the above problems, an object of the present embodiment is to provide a ceiling type air conditioner including an orifice provided in a shape corresponding to the shape of the control unit.

In addition, the present embodiment is a ceiling type air conditioner having an orifice formed with an air flow passage for guiding air introduced into the suction port to the blowing fan, and at least a part of the air flow passage extending in a straight line corresponding to the control unit. intended to provide

Another object of the present invention is to provide a ceiling type air conditioner with improved noise by smoothing the flow of air through the shape of the orifice.

The ceiling type air conditioner according to the present embodiment includes an orifice formed with an air flow passage for guiding air introduced into an air flow inlet by a control unit to a blowing fan, and the air flow passage is adjacent to the inlet. An inlet end forming one end of the air flow passage, an outlet end forming the other end of the air flow passage adjacent to the blowing fan, and a flow guide part connecting the inlet end and the outlet end are included. At this time, the inlet end includes a first curved portion having a first radius and a variable portion disposed between the first curved portions and having a smaller radius than the first radius.

In addition, the outlet end is formed of a second curved portion having a second radius. That is, the outlet end is formed in a perfectly circular shape, and a portion of the inlet end is provided in a non-circular shape.

At this time, a control unit is disposed outside the variable part in a radial direction, and the variable part is provided in a shape corresponding to the control unit.

According to the ceiling type air conditioner according to the present invention, there is an advantage in that the flow of air flowing from the inlet of the panel to the inside of the casing and flowing to the blowing fan is smoothly performed through the shape of the orifice.

Accordingly, there is an advantage in that the interference of the flow sucked into the casing is reduced, and the vortex and noise are reduced to increase efficiency.

In addition, there is an advantage in that a separate device is not required by changing only a part of the shape of the orifice corresponding to the control unit disposed on one side of the orifice to correspond to the control unit.

1 is a view showing a ceiling type air conditioner according to an embodiment of the present invention.
FIG. 2 is a view taken along line II-II′ of FIG. 1 .
3 is a view showing a casing and a panel of a ceiling type air conditioner according to an embodiment of the present invention, separated.
4 is a diagram showing a casing of a ceiling type air conditioner according to an embodiment of the present invention.
5 is a view showing an orifice of a ceiling type air conditioner according to an embodiment of the present invention.
6 is a diagram illustrating the flow of air passing through an orifice of a ceiling type air conditioner according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element may be directly connected or connected to the other element, but there may be another element between the elements. It should be understood that may be "connected", "coupled" or "connected".

FIG. 1 is a view showing a ceiling type air conditioner according to an embodiment of the present invention, and FIG. 2 is a view cut along line II-II′ of FIG. 1 .

1 and 2 , a ceiling type air conditioner (10, hereinafter referred to as an air conditioner) according to an embodiment of the present invention includes a casing 50 and a panel 20. The casing 50 is buried in the inner space of the ceiling.

At this time, the panel 20 may be positioned at approximately the height of the ceiling and exposed to the outside. The form shown in FIG. 1 can be understood as the air conditioner 10 exposed to the ceiling.

In addition, a number of parts may be installed inside the casing 50 . The plurality of components include a blowing fan 60 driven to suck in and discharge indoor air. A motor shaft 66 of a fan motor 65 is coupled to the blowing fan 60 , and the blowing fan 60 can be rotated by driving the fan motor 65 . For example, the blowing fan 60 may include a centrifugal fan.

Referring to FIG. 2 , the vertical direction, that is, the direction in which the motor shaft 66 of the fan motor 65 extends toward the blowing fan 60 is called an “axial direction”, and the direction perpendicular to the axial direction is called It can be called radial direction. Also, the motor shaft 66 may be referred to as an axial center c.

In addition, the plurality of parts include an orifice 80 for guiding air sucked toward the blowing fan 60 . The orifice 80 is disposed on the suction side of the blowing fan 60 and guides the air sucked into the casing 50 to the blowing fan 60 side.

In addition, the plurality of parts include a heat exchanger 70 that exchanges heat with air sucked into the casing 50 . The heat exchanger 70 may be arranged to be bent multiple times along the inner surface of the casing 50 and may be arranged to surround the blowing fan 60 and the orifice 80 from outside in a radial direction.

In addition, the plurality of parts include a control unit 90 that controls various parts. The control unit 90 may perform various functions such as driving the blowing fan 60 . Also, the control unit 90 may be disposed between the heat exchanger 70 and the orifice 80 .

In addition, the plurality of components include a drain pan 40 disposed under the heat exchanger 70 . The drain pan 40 may be provided to accommodate condensed water generated in the heat exchange process. In addition, the orifice 80 and the control unit 90 may be fixedly installed to the drain pan 40 .

The panel 20 is coupled to the lower side of the casing 50 and may be formed in a substantially rectangular shape when viewed from below. In addition, the panel 20 may be formed to protrude outward more than the lower end of the casing 50 so that a circumferential portion contacts the lower surface of the ceiling.

The panel 20 includes a discharge port 22 through which air passing through the inner space of the panel body 21 and the casing 50 is discharged. The outlet 22 is formed by punching at least a portion of the panel body 21 and may be formed at positions corresponding to four sides of the panel body 21 . Also, the discharge port 22 may be formed long along the longitudinal direction of each side of the panel 20 and may be configured to be opened and closed by a discharge vane 25 mounted on the panel 20 .

A suction grill 30 is mounted at the center of the panel 20 . The suction grill 30 forms a lower exterior of the air conditioner 10 and may have a substantially rectangular frame shape. The suction grill 30 includes a grill body 32 having a grid shape and having a suction port 34 .

The outlet 22 may be disposed in four outer directions of the suction grill 30 . In detail, the discharge port 22 is disposed outside the suction port 34, and may be provided with four in the vertical and horizontal directions. Due to the arrangement of the inlet 34 and the outlet 22, the air in the indoor space is sucked into the casing 50 through the center of the panel 20 and conditioned, and the conditioned air is supplied to the outlet. Through (22) it can be discharged in four directions outside the panel (20).

Air flow in the air conditioner 10 will be briefly described. When the fan motor 65 is driven and rotational force is generated in the blowing fan 60 , air in the indoor space is sucked through the intake port 34 . The sucked air passes through the orifice 80 and flows to the blowing fan 60, and the flow direction is changed while passing through the blowing fan 60.

In addition, the air flowing outside the radial radius through the blowing fan 60 is heat-exchanged while passing through the heat exchanger 70 . The heat-exchanged air may be discharged through the outlet 22 .

That is, air is sucked upward in the axial direction through the inlet 34 located at the center of the panel 20, and flows radially outward from the inlet 34 inside the casing 50, It may be discharged downward through the discharge port 34 in the axial direction.

3 is a view showing a casing and a panel of a ceiling type air conditioner according to an embodiment of the present invention, separated. In FIG. 3, for convenience of illustration, the configuration of the blowing fan 60 and the like is briefly shown, and the installation structure and coupling structure are omitted.

As shown in FIG. 3 , the panel 20 may be detachably installed in the casing 50 . For example, by separating the panel 20 from the casing 50, components disposed inside the casing 50 and the panel 20 may be inspected and replaced.

The drain pan 40 is provided to correspond to the discharge side of the panel 20 . In addition, a discharge air flow passage 42 through which the air flowing into the discharge port 22 passes is formed in the drain pan 40 . The discharge air flow passage 42 is formed at a position corresponding to the discharge port 22 .

At this time, the drain pan 40 is provided in a symmetrical structure like the panel 20 and the casing 50 . In detail, it is provided in a substantially rectangular shape with the blowing fan 60 as the center.

The orifice 80 is disposed inside the drain pan 40 in the radial direction to correspond to the suction side of the panel 20 . In addition, a suction air flow passage 100 is formed in the orifice 80 to guide the air introduced through the suction port 34 to the blowing fan 65 . The intake air flow passage 100 is formed at a position corresponding to the intake port 34 .

At this time, the control unit 90 is disposed on one side of the orifice 80. This structure corresponds to the arrangement of a general ceiling type air conditioner due to the shape limitation of the control unit 90. Accordingly, the orifice 80 cannot be formed in a symmetrical structure unlike the drain pan 40 , the panel 20 , and the casing 50 .

In addition, in the conventional ceiling-type air conditioner, the control unit 90 is disposed to block a portion of the intake air flow passage 100. That is, a part of the air flowing into the intake air flow passage 100 is interfered with flow by the control unit 90 . Thus, vortices were formed, noise increased and efficiency was reduced.

In order to prevent this, in the ceiling type air conditioner according to the spirit of the present invention, a portion of the intake air flow passage 100 has an asymmetrical shape. Hereinafter, the intake air flow passage is referred to as an air flow passage (100).

4 is a diagram showing a casing of a ceiling type air conditioner according to an embodiment of the present invention. It can be understood that FIG. 4 shows the ceiling type air conditioner 10 in which the panel 20 is separated or omitted in FIG. 1 .

As described above, the motor shaft 66 is referred to as the axial center c. In addition, referring to FIG. 4, a direction perpendicular to the paper is referred to as an axial upward direction, and a direction perpendicular to the paper is referred to as an axial downward direction.

In addition, a direction away from the axial center c along the paper surface is referred to as a radial outer side, and a direction closer to the axial center c along the paper surface is referred to as a radial inner side.

At this time, the air sucked into the ceiling type air conditioner 10 flows upward in the axial direction as a whole, and the air discharged as a whole flows downward in the axial direction. That is, the direction in which air flows through the air flow passage 100 corresponds to the axial direction upward.

In the air flow passage 100, an inlet end 110 forming one end of the air flow passage 100 adjacent to the suction port 34, and the air flow passage 100 adjacent to the blowing fan 65 An outlet end 120 forming the other end of is included. That is, the inlet end 110 and the outlet end 120 are spaced apart in the axial direction, and the outlet end 120 is located above the inlet end 110 in the axial direction.

In addition, the air flow passage 100 includes a flow guide part 160 connecting the inlet end 110 and the outlet end 120. That is, the flow guide part 160 is formed to extend in the axial direction to connect the inlet end 110 and the outlet end 120 spaced apart in the axial direction.

The inlet end 110 includes a first curved portion 112 having a first radius R1 and a variable portion 114 having a smaller radius than the first radius R1. In this case, the first radius R1 corresponds to a length extending in a radial direction based on the center c.

In addition, the inlet end 110 is formed by connecting the first curved portion 112 and the variable portion 114 . In addition, it may be understood that the variable portion 114 is disposed between the first curved portion 112 . In addition, the first curved portion 112 may be understood as an arc shape extending to the first radius R1, and the variable portion 114 may be understood as a portion connecting both ends of the arc.

For example, as shown in FIG. 4 , the variable portion 114 may be formed in a straight line connecting both ends of the first curved portion 112 . This is an example, and the variable portion 114 may be understood as a set of points having a smaller radius than the first radius R1. That is, it may be provided in an arc shape having a predetermined curvature.

At this time, the first curved portion 112 may extend more than 270 degrees in the first radius R1. That is, the central angle 360-x of the arc formed by the first curved portion 112 may be 270 degrees or more. Accordingly, an angle x formed by a line connecting both ends of the first curved portion 112 and the center c may be less than 90 degrees.

In other words, the first curved portion 112 may be provided with a length three or more times that of the variable portion 114 . This is because the length of the arc can be calculated as a value obtained by multiplying the radius and the central angle, and the radius of the first curved portion 112 is greater than that of the variable portion 114 and the central angle is three times or more.

Such a shape is to avoid interference with the control unit 90 disposed on one side of the air flow passage 100 . That is, the variable part 114 is formed to avoid interference with the control unit 90 . Accordingly, the variable portion 114 is formed in a shape corresponding to one surface 90a of the control unit 90.

As shown in FIG. 4 , the control unit 90 is disposed adjacent to one of the four surfaces formed by the drain pan 40 and the casing 50 . In detail, the control unit 90 is disposed outside the variable portion 114 in the radial direction. Hereinafter, one surface of the control unit 90 adjacent to the variable unit 114 is referred to as a contact surface 90a.

In FIG. 4, for convenience of illustration, the contact surface 90a and the variable portion 114 are shown as a line that completely overlaps, but are spaced apart from each other by a predetermined distance. In addition, although the contact surface 90a and the variable portion 114 are shown as perfect straight lines, they may be provided as lines having a predetermined curvature.

At this time, the outlet end 120 is formed of a second curved portion 122 having a second radius R2. That is, the outlet end 120 corresponds to a circle formed from the center c to the second radius R2. In FIG. 4 , one side of the second curved portion 122 and the variable portion 114 are shown in contact, but this corresponds to exemplary values.

In addition, the first radius R1 is provided larger than the second radius R2. This is to collect the air passing through the air flow passage 100.

In summary, the inlet end 110, which is one end of the air flow passage 100, is provided in a circular shape with one side bent inward, and the outlet end 120, which is the other end, is provided in a perfectly circular shape. Hereinafter, the shape of the flow guide part 160 connecting the inlet end 120 and the outlet end 130 will be described in detail.

5 is a view showing an orifice of a ceiling type air conditioner according to an embodiment of the present invention, and FIG. 6 shows the flow of air passing through an orifice of a ceiling type air conditioner according to an embodiment of the present invention. it is a drawing

As shown in FIG. 5 , the flow guide part 160 includes a first connection part 140 connecting the first curved part 112 and the second curved part 122 and the variable part 114 and A second connection part 150 connecting the second curved part 122 is included.

In addition, the inlet end 110 is formed by connecting the first connection part 140 and the second connection part 150 . For convenience of explanation, the first connection part 140 and the second connection part 150 are distinguished by a dotted line. In addition, for convenience of description, the second connection portion 150 is displayed wider than the previously described variable portion 114 .

In addition, as shown in FIG. 6 , the first connection part 140 and the second connection part 150 may be divided into three parts in the axial direction.

In detail, the first connection portion 140 includes a first lower end portion 142 extending forwardly in the axial direction from the first curved portion 112, and a first extending forwardly in the axial direction from the first lower end portion 142. An intermediate portion 144 and a first upper portion 146 extending axially forward from the first intermediate portion 144 to the second curved portion 122 are included.

In addition, the second connection portion 150 includes a second lower portion 152 extending forward in the axial direction from the variable portion 114 and a second stop portion extending forward in the axial direction from the second lower portion 152 ( 154) and a second upper end portion 156 extending axially forward from the second stop portion 154.

At this time, the first and second lower ends 142 and 152, the first and second middle parts 144 and 154, and the first and second upper ends 146 and 156 of the first and second connection parts 140 and 150 are divided. The criterion to be located is located on the radial collinear. That is, the vertical distance in the axial direction of each corresponding part is the same.

At this time, the second lower part 152 and the second stop part 154 may be provided in a shape corresponding to the contact surface 90a of the control unit 90 . For example, the second lower portion 152 and the second intermediate portion 154 may extend in a straight line forward in the axial direction in correspondence with the contact surface 90a formed in a plane.

That is, it can be understood that the control unit 90 is disposed outside the second lower portion 152 and the second stop portion 154 in the radial direction. In addition, it can be understood that the control unit 90 is not disposed outside the second upper end 156 in the radial direction. That is, the control unit 90 is located below the second upper end portion 156 in the axial direction.

In addition, the first lower end 142 is bent more radially inward than the second lower end 152 and extends forward in the axial direction. As described above, this is because the first curved portion 112 has a larger radius than the variable portion 114 .

In addition, the first upper end portion 146 and the second upper end portion 156 are bent outward in the radial direction to extend forward in the axial direction. This can be understood as the general shape of an orifice whose radius increases at the exit end. Accordingly, the second connection portion 150 may be provided to have the largest radius at the outlet end.

In summary, the first connection portion 140 is provided in a shape bent inward in the radial direction and then bent outward in the radial direction again, and the second connection portion 150 is provided in a shape extended in a straight line and bent outward in the radial direction.

Accordingly, referring to FIG. 6 , the air A flowing along the first connection portion 140 is introduced in a radially inward direction and discharged in a radially outward direction. In addition, the air (B) flowing along the second connection portion 150 is introduced in a straight line and discharged in a radially outward direction.

Through this structure, it can be seen that air smoothly flows along the first and second connection parts 140 and 150 despite the presence of the control unit 90 . That is, the flow of air is not hindered by the control unit 90 and no interference occurs. As a result, noise can be reduced.

10: ceiling air conditioner 20: panel
50: casing 80: orifice
90: control unit 100: air flow passage
110: inlet end 112: first curved portion
114: variable part 120: exit end
122: second curved part 160: flow guide part

Claims (15)

A casing in which a blowing fan is installed;
a panel coupled to the lower side of the casing and having a discharge port and a suction port; and
An orifice formed with an air flow passage for guiding the air introduced into the suction port to the blowing fan;
In the air flow passage,
an inlet end forming one end of the air flow passage adjacent to the inlet;
an outlet end formed in a circular shape and forming the other end of the air flow passage adjacent to the blowing fan; and
A flow guide unit connecting the inlet end and the outlet end; is included,
At the inlet end,
a first curved portion having a first radius; and
A variable portion disposed between the first curved portions in a partially incised form and having a radius smaller than the first radius;
The variable part is disposed on the outer side in the radial direction and is formed at the inlet end of the air flow passage with respect to the control unit having a straight surface facing the flow path guide part, and is spaced apart so as not to interfere with the control unit, A ceiling type air conditioner in which both ends of the incision are connected in a straight line corresponding to one surface of the control unit. According to claim 1,
The ceiling type air conditioner, characterized in that the outlet end is formed of a second curved portion having a second radius. According to claim 2,
In the flow guide part,
a first connecting portion connecting the first curved portion and the second curved portion in an axial direction; and
A ceiling type air conditioner, characterized in that it includes a second connecting portion connecting the variable portion and the second curved portion in an axial direction. According to claim 3,
In the first connection part,
a first lower end extending upward in an axial direction from the first curved surface;
a first stop portion extending upward in an axial direction from the first lower portion; and
and a first upper end portion extending upward in an axial direction from the first stop portion to the second curved surface portion. According to claim 4,
In the second connection part,
a second lower end extending upward in an axial direction from the variable part;
a second stop portion extending upward in an axial direction from the second lower portion; and
and a second upper end portion extending upward in an axial direction from the second stop portion to the second curved surface portion. According to claim 5,
The ceiling type air conditioner, characterized in that the second lower end and the second middle part extends in a straight line upward in an axial direction. According to claim 5,
The ceiling type air conditioner, characterized in that the first lower end is bent radially inward than the second lower end and extends upward in the axial direction. According to claim 5,
The ceiling type air conditioner, characterized in that the first upper end and the second upper end are bent outward in a radial direction and extend upward in an axial direction. According to claim 5,
The control unit is disposed outside the second connection portion in a radial direction. According to claim 9,
The second lower part and the second middle part extend in the axial direction in a shape corresponding to one surface of the control unit adjacent to the second connection part. According to claim 2,
The first radius is a ceiling type air conditioner, characterized in that greater than the second radius. According to claim 2,
a heat exchanger disposed to surround the blowing fan and the orifice from outside in a radial direction; and
A ceiling air conditioner further comprising a control unit disposed between the heat exchanger and the orifice. delete delete According to claim 1,
The ceiling type air conditioner, characterized in that the first curved portion extends 270 degrees or more in the first radius.

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