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KR-102963484-B1 - Indoor Unit of Aironditioner with Improved Air Discharge Performance

KR102963484B1KR 102963484 B1KR102963484 B1KR 102963484B1KR-102963484-B1

Abstract

The present invention relates to an indoor unit of an air conditioner that can maximize cooling and heating efficiency by improving the flow when the airflow generated by the blower fan is discharged into the room, thereby reducing air volume loss, while allowing air to reach far parts of the air conditioning area. The indoor unit of the air conditioner according to the present invention comprises: an indoor unit main body (2) having an intake port (12) for sucking air into the rear of the main body case (10), a front discharge port (22) for discharging air onto a front plate (20), and a plurality of side discharge ports (14) for discharging air onto the left and right sides; a front air blower fan (300) for sucking air from the intake port (12) and blowing air toward the front discharge port (22); a plurality of side air blower fans (350) for sucking air from the intake port (12) and blowing air toward each of the plurality of side discharge ports (14); and a front movable door (30) that moves in the front and rear directions by means of a driving module (700) to adjust the degree of opening of the front discharge port (22). A front discharge channel (PG), which is a passage for guiding air blown from a front air blower fan (300) to a front discharge port (22), is formed by an inner channel forming section and an outer channel forming section having a circular cross section; the inner channel forming section is formed by a first inner channel section (IPG1), a second inner channel section (IPG2), and a third inner channel section (IPG3); and the outer channel forming section is formed by a first outer channel section (OPG1), a second outer channel section (OPG2), and a third outer channel section (OPG3).

Inventors

  • 김성민
  • 윤동혁
  • 강준
  • 임승철
  • 강성희

Assignees

  • 오텍캐리어 주식회사

Dates

Publication Date
20260513
Application Date
20230327

Claims (8)

  1. An indoor unit main body (2) having an intake port (12) for sucking in air at the rear of the main body case (10), a front discharge port (22) for discharging air to the front plate (20), and a plurality of side discharge ports (14) for discharging air to the left and right sides; A heat exchanger (70) positioned in front of the above intake port (12); A rear support plate (100) installed in front of the heat exchanger (70), having a first inlet (112) for introducing air into a front discharge device and a second inlet (122) for introducing air into a side discharge device; A rear flow channel housing (200) installed at the front end of the rear support plate (100) and having a front wind housing part (202) and a plurality of side wind housing parts (204) formed therein; A diffuser housing (400) coupled to the front of the rear Euro housing (200); A front flow path housing (600) that is coupled to the front of the diffuser housing (400) and forms the outer portion of the passage of the front discharge flow path (PG) extending to the front discharge port (22); A front movable door (30) that is movably coupled to the diffuser housing (400) on the inside of the front Euro housing (600) to control the degree of opening of the front discharge port (22); A driving module (700) installed in the driving device receiving portion (422) of the above diffuser housing (400); and A front air blower fan (300) that sucks in air from the intake port (12) and blows air toward the front discharge port (22) as it rotates by the driving module (700) of the diffuser housing (400) inside the rear Euro housing (200); The diffuser housing (400) comprises an outer flow path housing portion (410) forming the outer side of the passage of the front discharge flow path (PG), an inner flow path housing portion (420) forming the inner side of the passage of the front discharge flow path (PG), a diffuser grille portion (430) formed between the outer flow path housing portion (410) and the inner flow path housing portion (420), and a diagonal guide groove (440) formed on the inner surface of the inner flow path housing portion (420). The front movable door (30) comprises an outer guide housing part (38a) fitted to the outer surface of the inner flow path housing part (420) of the diffuser housing (400) to rotate and move back and forth simultaneously, an inner guide housing part (38b) fitted to the inner surface of the inner flow path housing part (420) to rotate and move back and forth simultaneously, a guide shaft (34) formed protruding from the outer circumference of the outer guide housing part (38a) and fitted into the diagonal guide groove (440), and a ring gear part (32) formed on the inner circumference of the inner guide housing part (38b) and receiving rotational force from the drive module (700). As the ring gear part (32) rotates by the drive module (700) and the guide shaft (34) moves in the forward and backward direction along the diagonal guide groove (440), the front movable door (30) rotates and moves linearly in the forward and backward direction simultaneously. The outer guide housing part (38a) and the inner guide housing part (38b) are configured to rotate and move back and forth simultaneously on both the outer and inner surfaces of the inner flow channel housing part (420). A front discharge channel (PG), which is a passage for guiding air blown from the front air blower fan (300) to the front discharge port (22), is composed of an inner channel forming part and an outer channel forming part with a circular cross section. The above inner flow path forming section comprises a first inner flow path section (IPG1) formed by a hub extension section (314) whose diameter gradually expands as it extends forward from the boss plate section (312) of the front wind blower fan (300), a second inner flow path section (IPG2) that extends straight forward from the front end of the first inner flow path section (IPG1) to a position close to the front discharge port (22), and a third inner flow path section (IPG3) formed at the front of the second inner flow path section (IPG2) on the back surface of the front movable door (30) such that its diameter expands as it extends forward; The above outer flow path forming section comprises: a first outer flow path section (OPG1) that is extended and extended parallel to the hub extension section (314) forming the first inner flow path section (IPG1) while maintaining a uniform spacing while being formed by maintaining a gap with the outer side of the blower blade (320) of the front wind blower fan (300); a second outer flow path section (OPG2) that is extended straight forward from the first outer flow path section (OPG1) to a position corresponding to a rear portion of the second inner flow path section (IPG2) while maintaining a uniform spacing with the second inner flow path section (IPG2); and a third outer flow path section (OPG2) that is extended from the second outer flow path section (OPG2) to the front discharge port (22) such that the diameter decreases as it goes forward, thereby forming a nozzle-shaped discharge path where the cross-sectional area of the passage narrows as it goes forward together with the third inner flow path section (IPG3). An indoor unit of an air conditioner characterized by being composed of an outer flow path section (OPG3).
  2. In paragraph 1, The above first outer flow path section (OPG1) is formed by the outer suction tunnel section (210) of the rear flow path housing (200) which is mounted with a gap on the outside of the front wind blower fan (300), and The above second outer flow channel section (OPG2) is formed by the outer flow channel housing part (410) of the diffuser housing (400) which is coupled to the front end of the rear flow channel housing (200), and The indoor unit of an air conditioner is characterized in that the third outer flow path section (OPG3) is formed by the discharge flow path outer housing section (610) of the front flow path housing (600) which is coupled to the front end of the outer flow path housing section (410) of the diffuser housing (400).
  3. In paragraph 1, The above second inner flow path section (IPG2) is formed by the inner flow path housing section (420) of the diffuser housing (400) extending forward from a point adjacent to the front end of the hub extension section (314) of the front wind blower fan (300). The above third inner flow path section (IPG3) is, An indoor unit of an air conditioner characterized by being formed by an outer guide housing portion (38a) that extends straight to the rear of the front movable door (30) so as to be movably coupled to the inner flow housing portion (420) of the diffuser housing (400), and an extended extension portion (36) whose diameter extends forward from the midpoint of the outer guide housing portion (38a).
  4. In paragraph 1, This is for configuring a side discharge path (SPG) for blowing air from a side air blower fan (350) toward the side discharge port (14), A hub (360) having a boss plate portion (362) having a shaft coupling boss (366) to which the output shaft (560) of a side wind motor (550) is coupled, a cross-sectional circular hub extension portion (364) whose diameter gradually expands forward from the outer diameter of the boss plate portion (362) to form the inner side of the passage of the side discharge channel (SPG), and a wing (370) formed on the outer circumference of the hub extension portion (364); A side wind housing part (204) having a rear outer flow path housing part (250) that is installed at a distance on the radial outer side of the side wind blower fan (350), extends parallel to the hub extension part (364) of the side wind blower fan (350) at a uniform distance on the radial outer side and extends to a point adjacent to the side discharge port (14) to form the outer part of the passage of the side discharge flow path (SPG); A front inner flow channel housing (800) that is positioned in front of the side air blower fan (350) and coupled to the side air housing part (204), extending from the tip of the hub extension part (364) of the hub (360) to the side discharge port (14), and forming an inner front portion of the passage of the side discharge flow channel (SPG) corresponding to the rear outer flow channel housing part (250) in the front portion of the hub extension part (364); and An indoor unit of an air conditioner characterized by comprising: a side door assembly (50) having a side discharge grille (52) disposed at a side outlet (815) formed by the front end of the rear outer flow channel housing part (250) and the front end of the front inner flow channel housing (800) inside the side discharge port (14), and a side door flap (60) that opens and closes the side discharge port (14) outside the side discharge grille (52).
  5. In paragraph 4, The above-mentioned side wind housing portion (204) is made of a rectangular panel with a cross section that forms the rear end (815a) of the side outlet (815) facing the side discharge port (14) on both the left and right sides of the front end; The rear outer flow path housing part (250) of the above-mentioned side wind housing part (204) is, It is composed of a circular suction tunnel section (252) that extends parallel to the hub extension section (364) of the side wind blower fan (350) with a uniform spacing in the radial direction to form the outer side of the passage of the side discharge channel (SPG), and an extension housing section (254) that extends from the suction tunnel section (252) to connect the outer part of the square section of the side wind housing section (204); The above front inner Euro housing (800) is, A front guide panel section (810) having a square cross section that is positioned in close contact with the front plate (20) of the main body case (10) adjacent to the side discharge port (14) and forms the front end (815b) of the side outlet (815); a motor receiving section (820) having a circular cross section that protrudes rearward to accommodate a side wind motor (550) for driving the side wind blower fan (350) in the front inner side and is accommodated with a gap inside the hub extension section (364) of the side wind blower fan (350); an outward extension section (830) that connects the outer edge of the front guide panel section (810) having a square cross section from the outer circumference of the motor receiving section (820) adjacent to the front end of the hub extension section (364); and extends rearward from the upper and lower ends of the front guide panel section (810) respectively to the upper and lower ends of the side wind housing section (204) of the rear flow path housing (200). An indoor unit of an air conditioner characterized by including a blocking flange portion (840) that closes to block the outflow of air in the vertical direction and guides it to a side outlet (815), and forms an upper portion (815c) and a lower portion (815d) of the side outlet (815).
  6. In paragraph 5, The upper and lower blocking flange portions (840) mentioned above are, A flow splitting edge (842a) is formed at a point located at an offset angle (N°) away from the vertical centerline (Y) passing through the axis of the side wind blower fan (350) and the motor housing (820) in the direction of rotational advancement of the side wind blower fan (350), for separating the blowing air toward the left and right side outlets (815). The outlet forming part (842) extends horizontally from the above-mentioned flow splitting edge (842a) to the lateral outlet (815) on the side closer to it, and An indoor unit of an air conditioner characterized by having an outwardly extending portion (844) that forms a curved surface up to the vicinity of the vertical centerline (Y) toward a lateral outlet (815) far from the above-mentioned flow splitting edge (842a).
  7. In paragraph 6, An indoor unit of an air conditioner characterized in that the offset angle (N°) of the above-mentioned fluid splitting edge (842a) is 20 to 30°.
  8. In any one of paragraphs 1 through 7, The indoor unit of an air conditioner is characterized in that the front air blower fan (300) and the side air blower fan (350) are made of blower fans of the same structure.

Description

Indoor Unit of Aironditioner with Improved Air Discharge Performance The present invention relates to an indoor unit of an air conditioner, and more specifically, to an indoor unit of an air conditioner with improved discharge performance that can maximize cooling and heating efficiency by improving the flow when the airflow generated by the blower fan is discharged into the room, thereby reducing air volume loss, and allowing air to reach far parts of the air conditioning area. Generally, an air conditioner is a device designed to regulate indoor air conditions to a comfortable level by performing a series of refrigerant cycles involving compression, condensation, expansion, and evaporation of the refrigerant. Generally, split-type air conditioners are used, in which a heat-releasing section containing a condenser and a heat-absorbing section containing an evaporator are installed separately. In this case, the heat-releasing section is installed outdoors and is typically called the 'outdoor unit,' while the heat-absorbing section is installed in the air-conditioned space, i.e., indoors and is therefore called the 'indoor unit.' Among the indoor units of conventional air conditioners, there is disclosed a stand-type air conditioner indoor unit having a discharge port on the front of the indoor unit as described in Patent Documents 1 to 3, and a door (door blade) for opening and closing the discharge port, wherein the discharge port opens when the door is moved forward and closes when the door is moved backward. In the indoor unit of a conventional air conditioner comprising Patent Documents 1 to 3, the airflow velocity discharged from the front outlet is slow, so the discharged air does not reach a distant area, making it difficult to quickly and effectively heat and cool the entire indoor space. In addition, when the air generated by the blower fan moves toward the side outlet, significant losses occur as it hits the upper and lower surfaces of the duct, which reduces the amount of air discharged from the side outlet and lowers the speed, thereby causing a decrease in cooling and heating efficiency. Furthermore, a difference in discharge flow rate occurs between the left and right side outlets, resulting in a result that deviates from the air conditioning effect expected by the user. In addition, using different types of fans for the front outlet and the side outlet increased the number of parts, which in turn raised manufacturing costs and incurred additional costs for inventory management. FIG. 1 is an external perspective view of an indoor unit of an air conditioner according to the present invention. Figure 2 is an external perspective view of the indoor unit of Figure 1 when the front discharge port and the side discharge port are opened. FIG. 3 is a side cross-sectional view of an indoor unit according to the present invention. FIG. 4 is an exploded perspective view of an indoor unit according to the present invention. FIG. 5 is a perspective view showing the assembled state of the front discharge port device of an indoor unit according to the present invention. FIG. 6 is an exploded perspective view of a front discharge port device of an indoor unit according to the present invention. Figure 7 is a drawing of Figure 6 viewed from a different direction. FIG. 8 is a side cross-sectional view showing an enlarged view of the front discharge port device portion of an indoor unit according to the present invention. FIG. 9 is a drawing showing the state in which the front movable door in FIG. 8 has advanced to the maximum extent and the front discharge port is fully opened. FIG. 10 is a drawing showing the airflow of air discharged through the front discharge port of an indoor unit according to the present invention. FIG. 11 is a cross-sectional view showing the structure of a side discharge port of an indoor unit according to the present invention. FIG. 12 is a cross-sectional view showing the structure of a side discharge port of an indoor unit according to the present invention. FIG. 13 is an exploded perspective view of a side discharge flow path structure of an indoor unit according to the present invention. FIG. 14 is a drawing of FIG. 13 viewed from a different direction. FIG. 15 is an enlarged perspective view showing the front inner flow path housing forming the side discharge port of the indoor unit according to the present invention. FIG. 16 is a drawing of FIG. 15 viewed from a different direction. Fig. 17 is a front view of Fig. 16. FIG. 18 is a cross-sectional view (plan view) along line I-I of FIG. 15. FIG. 19 is a cross-sectional view (side view) along line II-II of FIG. 15. Hereinafter, specific embodiments of an indoor unit of an air conditioner according to the present invention will be described with reference to the attached drawings. (Overall composition) FIGS. 1 and 2 are perspective views showing the exterior of an indoor unit of an air conditioner according to the present invention