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CN-224215889-U - Heat exchanger and heat pump water heater

CN224215889UCN 224215889 UCN224215889 UCN 224215889UCN-224215889-U

Abstract

The application belongs to the technical field of water heaters, and particularly relates to a heat exchanger and a heat pump water heater. The heat exchanger comprises a plurality of flat pipe bodies, wherein the plurality of flat pipe bodies are sequentially arranged along the axial direction of the water tank liner, a plurality of flow channels are arranged in the flat pipe bodies, the flow channels are arranged at intervals in the width direction of the flat pipe bodies, the extending direction of the flow channels is parallel to the length direction of the flat pipe bodies, and at least one second heat conduction part is arranged among the flow channels in the width direction of the flat pipe bodies. The heat exchanger and the heat pump water heater provided by the embodiment of the application can increase the contact area between the flat tube and the liner of the heat exchanger and improve the heat exchange efficiency.

Inventors

  • MAO MENGJIE
  • ZHAO RUNPENG
  • ZHENG JISHEN

Assignees

  • 青岛海尔新能源电器有限公司
  • 青岛经济技术开发区海尔热水器有限公司
  • 海尔智家股份有限公司

Dates

Publication Date
20260508
Application Date
20250416

Claims (10)

  1. 1. The heat exchanger is characterized by comprising a plurality of flat tube bodies (100), wherein the flat tube bodies (100) are sequentially arranged along the axial direction of a water tank liner (600); The flat pipe comprises a flat pipe body (100), wherein a plurality of flow channels (110) are arranged in the flat pipe body (100), the flow channels (110) are distributed at intervals in the width direction of the flat pipe body (100), and the extending direction of the flow channels (110) is parallel to the length direction of the flat pipe body (100); at least one second heat conduction part (300) is arranged among the flow channels (110) in the width direction of the flat pipe body (100).
  2. 2. The heat exchanger according to claim 1, wherein a plane perpendicular to a length direction of the flat tube body (100) is taken as a cross section, and a cross-sectional area of a middle portion of the second heat conduction portion (300) is smaller than a cross-sectional area of an end portion of the second heat conduction portion (300).
  3. 3. The heat exchanger according to claim 2, wherein the second heat conducting portion (300) has a contact surface (330), and a first inclined surface (310) and a second inclined surface (320) connected; The contact surface (330) faces the inner side of the flat pipe body (100), and the contact surface (330) is used for being in contact with the outer side wall of the water tank liner (600); The first inclined surface (310) and the second inclined surface (320) face to the outer side of the flat pipe body (100); The first inclined surface (310) and the second inclined surface (320) extend toward the inside of the flat tube body (100) in a direction from the end of the second heat conduction portion (300) to the middle of the second heat conduction portion (300).
  4. 4. The heat exchanger according to claim 1, wherein the second heat conducting portion (300) has a contact surface (330) and an outer plane (340); The contact surface (330) faces the inner side of the flat pipe body (100), and the contact surface (330) is used for being in contact with the outer side wall of the water tank liner (600); the outer plane (340) faces to the outer side of the flat pipe body (100), and the outer plane (340) is concavely arranged relative to the outer surface of the flat pipe body (100).
  5. 5. The heat exchanger according to claim 1, wherein the number of the second heat conducting portions (300) is a plurality; The plurality of second heat conduction parts (300) are arranged at intervals in the width direction of the flat pipe body (100), and the plurality of second heat conduction parts (300) can divide the plurality of flow channels (110) into a plurality of equal parts.
  6. 6. The heat exchanger according to any one of claims 1 to 5, wherein the flat tube body (100) is provided with first heat conduction portions (200) at both ends in the width direction thereof, respectively.
  7. 7. The heat exchanger according to claim 6, wherein the first heat conduction portion (200) has a first end (210) and a second end (220) disposed opposite to each other in a width direction of the flat tube body (100), the first end (210) being connected to the flat tube body (100); The cross-sectional area of the first heat conducting portion (200) decreases from a first end (210) of the first heat conducting portion (200) to a second end (220) of the first heat conducting portion (200).
  8. 8. The heat exchanger according to any one of claims 1-5, further comprising a first header (400) and a second header (500) arranged in parallel; The first end of the flat pipe body (100) in the length direction is communicated with the first collecting pipe (400), and the second end of the flat pipe body (100) in the length direction is communicated with the second collecting pipe (500).
  9. 9. The heat exchanger according to claim 8, wherein the axial direction of the first header pipe (400) is parallel to the width direction of the flat pipe body (100), and the flat pipe bodies (100) are distributed at intervals along the axial direction of the first header pipe (400).
  10. 10. A heat pump water heater, characterized by comprising a tank liner (600) and a heat exchanger according to any of claims 1-9; the heat exchanger comprises a plurality of flat pipe bodies (100), wherein the flat pipe bodies (100) are abutted with the outer side wall of the water tank liner (600).

Description

Heat exchanger and heat pump water heater Technical Field The application belongs to the technical field of water heaters, and particularly relates to a heat exchanger and a heat pump water heater. Background Flat tube heat exchangers, also known as microchannel heat exchangers, are key components of heat pump water heaters. The flat tube heat exchanger is generally composed of a plurality of flat tubes, a plurality of flow channels are arranged in each flat tube, and refrigerant can circularly flow in the flow channels, so that heat transfer is realized. In practical application, the flat tube of the flat tube heat exchanger is generally directly attached to the outer surface of the inner container of the water heater, and the heat transfer of condensation is completed by means of direct contact between the tube wall and the inner container. When the refrigerant flows in the flat tube, the released heat can continuously heat the water in the inner container through the contact interface until the water temperature reaches a preset value. However, the contact area between the flat tube and the inner container is relatively limited, so that the heat exchange efficiency is low. Disclosure of utility model The application provides a heat exchanger and a heat pump water heater, which can increase the contact area between a flat tube and an inner container of the heat exchanger and improve the heat exchange efficiency. In a first aspect, the application provides a heat exchanger, which comprises a plurality of flat tube bodies, wherein the flat tube bodies are sequentially arranged along the width direction of the flat tube bodies; the inner part of the flat pipe body is provided with a plurality of flow channels, the flow channels are arranged at intervals along the axial direction of the water tank liner, and the extending direction of the flow channels is parallel to the length direction of the flat pipe body; At least one second heat conduction part is arranged among the flow channels in the width direction of the flat pipe body. In one possible design, the plane perpendicular to the length direction of the flat tube body is taken as a cross section, and the cross section area of the middle part of the second heat conduction part is smaller than the cross section area of the end part of the second heat conduction part. In one possible design, the second heat conduction part has a contact surface, and a first inclined surface and a second inclined surface which are connected; The contact surface faces the inner side of the flat pipe body and is used for being in contact with the outer side wall of the water tank liner; the first inclined surface and the second inclined surface face the outer side of the flat pipe body; the first inclined surface and the second inclined surface extend toward the inner side of the flat tube body in a direction from the end portion of the second heat conduction portion to the middle portion of the second heat conduction portion. In one possible design, the second heat conducting portion has a contact surface and an outer plane; The contact surface faces the inner side of the flat pipe body and is used for being in contact with the outer side wall of the water tank liner; The outer plane faces the outer side of the flat pipe body, and the outer plane is concavely arranged relative to the outer surface of the flat pipe body. In one possible design, the number of the second heat conduction parts is a plurality; The plurality of second heat conduction parts are arranged at intervals in the width direction of the flat pipe body, and the plurality of second heat conduction parts can divide the flow channels into a plurality of equal parts. In one possible design, the two ends of the flat tube body in the width direction are respectively provided with a first heat conduction part. In one possible design, the first heat conduction part has a first end and a second end which are oppositely arranged in the width direction of the flat pipe body, and the first end is connected with the flat pipe body; The cross-sectional area of the first heat conducting portion decreases from the first end of the first heat conducting portion to the second end of the first heat conducting portion. In one possible design, the device further comprises a first collecting pipe and a second collecting pipe which are arranged in parallel; The first end of the length direction of the flat pipe body is communicated with the first collecting pipe, and the second end of the length direction of the flat pipe body is communicated with the second collecting pipe. In one possible design, the axial direction of the first collecting pipe is parallel to the width direction of the flat pipe body, and the flat pipe bodies are distributed at intervals along the axial direction of the first collecting pipe. The application provides a heat pump water heater, which comprises a water tank liner and any heat exchanger; the heat ex