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KR-102963368-B1 - INTEGRATED HEAT EXCHANGER AND HEAT PUMP CHILLER HAVING THE SAME

KR102963368B1KR 102963368 B1KR102963368 B1KR 102963368B1KR-102963368-B1

Abstract

The present invention relates to a heat exchanger for a heat pump chiller, and more specifically, it is a modular, integrated structure that allows the number of heat exchangers to be easily changed according to the system capacity of the heat pump chiller, has a structure that enables effective drainage during defrosting, and is configured to reduce noise caused by the operation of a fan. The present invention, for achieving the above-mentioned purpose, is a heat exchanger comprising two heat exchangers positioned facing each other on both sides, two fixed panels connecting and closing the space between the two facing heat exchangers, a fan mounted on an upper surface that is open upwards as the two heat exchangers and two fixed panels are assembled, and a bottom tray mounted on a lower surface that is open downwards as the two heat exchangers and two fixed panels are assembled, wherein the bottom tray has an inclined surface that is high in the center of its length and becomes lower toward both edges, a horizontal surface is formed on the outside of the inclined surface, a first drain hole is formed on the underside of the inclined surface, and a second drain hole is formed on the horizontal surface, and the heat pump chiller according to the present invention is further characterized by including a chiller frame in which a plurality of the heat exchangers are fixed in a row.

Inventors

  • 이수진
  • 하병열
  • 류정운
  • 나권수
  • 민경기
  • 임승철
  • 강성희

Assignees

  • 오텍캐리어 주식회사

Dates

Publication Date
20260512
Application Date
20250411

Claims (12)

  1. A heat exchanger comprising two heat exchange sections (110) positioned facing each other on both sides, two fixed panels (130) connecting and closing the space between the two facing heat exchange sections (110), a fan (140) mounted on an upper surface that is open upward when the two heat exchange sections (110) and the two fixed panels (130) are assembled, and a bottom tray (120) mounted on a lower surface that is open downward when the two heat exchange sections (110) and the two fixed panels (130) are assembled, The bottom tray (120) has an inclined surface (120S) that is high in the center of its length and becomes lower toward both edges, a horizontal surface (120H) is formed on the outside of the inclined surface (120S), a first drain hole (121H) is formed on the underside of the inclined surface (120S), and a second drain hole (122H) is formed on the horizontal surface (120H). A first groove (121A) is formed in the width direction of the bottom tray (120) on the lower side of the inclined surface (120S), and a plurality of first drainage holes (121H) are formed in a row on the bottom of the first groove (121A). A second groove (122B) is formed in the width direction of the bottom tray (120) on the horizontal surface (120H), and a plurality of second drainage holes (122H) are formed in a row on the bottom of the second groove (122B), and an upwardly protruding convex portion (125) is formed between the first groove (121A) and the second groove (122B). An integrated heat exchanger characterized in that the convex portion (125) corresponds to a height lower than the middle of the outer surface of the heat exchange portion (110) positioned at an outward slope.
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  5. In paragraph 1, An integrated heat exchanger characterized by an inclined surface (120S) that is inclined at 5 degrees.
  6. In paragraph 1, An integrated heat exchanger characterized in that a base (115) is fixed to the upper surface of an inclined surface (120S), and as the lower end of a heat exchanger (110) is fixed to the upper surface of the base (115), the heat exchanger (110) tilts outward, and a gap equal to the height of the base (115) is formed between the lower end of the heat exchanger (110) and the upper surface of the inclined surface (120S).
  7. In paragraph 6, An integrated heat exchanger characterized in that a fixed panel (130) connecting the heat exchangers (110) located between two heat exchangers (110) inclined outward has an inverse isosceles triangle structure, both ends of a fan bracket (141) are fixed to the base (130B) of the two fixed panels (130), a fan motor (145) is mounted at the center of the fan bracket (141), and a fan (140) is fixed to the shaft of the fan motor (145).
  8. In Paragraph 7, An integrated heat exchanger characterized in that both ends of the fan bracket (141) are bent upward and then bent outward to wrap around the bottom edge (130B) of the fixed panel (130) and then fixed to the bottom edge.
  9. In paragraph 8, An integrated heat exchanger characterized by having a through hole (143) formed in the fan bracket (141) through which air passes.
  10. In paragraph 8, An integrated heat exchanger characterized in that one of the two fixed panels (130) has a height-intermediate section divided so that the upper panel (131) is detachably mounted from the heat exchange section (110).
  11. A heat pump chiller characterized by further including a chiller frame () in which a plurality of heat exchangers (100) of claim 1 are fixed in a row.
  12. In paragraph 1, An integrated heat exchanger characterized in that water falling from above the middle of the height of the outer surface of the heat exchanger (110) is drained through the second drain hole (122H) of the second groove (122B), and water flowing down along the inner surface of the heat exchanger (110) or water falling from below the middle of the height of the outer surface of the heat exchanger (110) is drained through the first drain hole (121H) of the first groove (121A).

Description

Integrated heat exchanger and heat pump chiller having the same The present invention relates to a heat exchanger for a heat pump chiller, and more specifically, it is a modular, integrated structure that allows the number of heat exchangers to be easily changed according to the system capacity of the heat pump chiller, has a structure that enables effective drainage during defrosting, and is configured to reduce noise caused by the operation of a fan. Generally, heat pump chillers are installed on the rooftops of large buildings or on dedicated outdoor sites, and heat is exchanged between the refrigerant and ambient air in the heat exchanger of the heat pump chiller. Heat pump chillers are designed and assembled by determining the number of heat exchangers based on the system capacity and mounting that number onto a chiller frame. Traditionally, chiller frames were designed and manufactured based on the number of heat exchangers to be installed. Consequently, there is a disadvantage in that productivity and ease of assembly are reduced because the number and layout of heat exchangers are designed first according to the system capacity, followed by the subsequent fabrication of the chiller. Meanwhile, when operating a heat pump chiller, ice may form around the refrigerant tubes of the heat exchanger. In this case, the heat transfer efficiency decreases as the freezing blocks direct contact between the refrigerant tubes and the outside air. If freezing occurs, the frozen ice or frost must be removed using the chiller's defrosting function. However, water generated during the defrosting process accumulates at the bottom of the heat exchanger, and as this accumulated water causes corrosion of chiller components or refreezing, the water must be drained promptly. In addition, conventional chillers have the disadvantage that because the fan motor is mounted on the top of the heat exchanger and the fan is operated from the top, vibrations generated by the fan motor are directly transmitted to the heat exchanger, resulting in increased noise and adversely affecting the durability of the heat exchanger components. FIGS. 1a to 1d are perspective views showing various types of chillers equipped with a modular heat exchanger according to the present invention, and FIG. 2 is a perspective view showing a heat exchanger according to the present invention. FIG. 3 is an exploded perspective view of the heat exchanger shown in FIG. 2, and FIG. 4 is a cross-sectional view showing the inclined surface of the bottom tray illustrated in FIG. 3, and FIG. 5 is a perspective view showing the first drainage hole and the second drainage hole of the bottom tray illustrated in FIG. 3, and FIG. 6 is a cross-sectional view showing the first drainage hole and the second drainage hole of the bottom tray illustrated in FIG. 5. FIG. 7 is a detailed view showing the motor bracket illustrated in FIG. 3, and Figure 8 is a detailed diagram showing the connection relationship between the motor bracket and the fixed panel illustrated in Figure 7. FIG. 9 is a cross-sectional view showing the water drainage relationship between the inner and outer surfaces of the heat exchanger shown in FIG. 4. Below, a preferred embodiment of an integrated heat exchanger according to the present invention and a heat pump chiller equipped with the same will be described in detail with reference to the attached drawings. In the drawings, FIGS. 1a to 1d are perspective views showing various types of chillers equipped with a modular heat exchanger according to the present invention, and FIG. 2 is a perspective view showing a heat exchanger according to the present invention. FIG. 3 is an exploded perspective view of the heat exchanger shown in FIG. 2, FIG. 4 is a cross-sectional view showing an inclined surface of a bottom tray shown in FIG. 3, FIG. 5 is a perspective view showing a first drain hole and a second drain hole of a bottom tray shown in FIG. 3, FIG. 6 is a cross-sectional view showing a first drain hole and a second drain hole of a bottom tray shown in FIG. 5, FIG. 7 is a detailed view showing a motor bracket shown in FIG. 3, and FIG. 8 is a detailed view showing the connection relationship between the motor bracket and the fixing panel shown in FIG. 7. FIG. 9 is a cross-sectional view showing the water drainage relationship between the inner surface and the outer surface of the heat exchanger shown in FIG. 4. As illustrated in FIGS. 1a to 1d, the heat pump chiller (200) may be equipped with one to four modular integrated heat exchangers (100) depending on the system capacity. The heat pump chiller (200) according to the present invention is equipped with a chiller frame (201) capable of accommodating one to four modular integrated heat exchangers (100) according to the required capacity of the system, and one to four heat exchangers (100) are inserted and mounted in a row into the chiller frame (201). If necessary, a heat pump chiller equipped with five or