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CN-121977309-A - On-off device, variable flow-dividing heat exchanger and air conditioner

CN121977309ACN 121977309 ACN121977309 ACN 121977309ACN-121977309-A

Abstract

The application relates to the technical field of air conditioners and discloses an on-off device which comprises a shell part, wherein the shell part comprises a refrigerant cavity, a first pipeline, a second pipeline and a third pipeline are arranged at the first end of the refrigerant cavity, a fourth pipeline is arranged at the second end of the refrigerant cavity, which is far away from the first pipeline, a first on-off piece is arranged in the first pipeline, a second on-off piece is arranged in the second pipeline, the inside of the third pipeline is kept smooth, a communication part comprises a communication pipeline, the first end of the communication pipeline is communicated with the first pipeline, the second end of the communication pipeline is communicated with the second pipeline, the first end of the communication pipeline is positioned at one side of the first on-off piece, which is far away from the fourth pipeline, and the second end of the communication pipeline is positioned at one side of the second on-off piece, which is far away from the fourth pipeline. The application also discloses a variable flow dividing heat exchanger and an air conditioner.

Inventors

  • Guan Jiangyong
  • CUI WENJUAN
  • WANG FEI
  • LI CHUNLIANG
  • ZHAO HANWEN
  • YAN YONGFANG
  • GUO KETAO

Assignees

  • 青岛海尔空调器有限总公司

Dates

Publication Date
20260505
Application Date
20260407

Claims (11)

  1. 1. An on-off device, characterized by comprising: The shell part (110) comprises a refrigerant cavity (120), wherein a first end of the refrigerant cavity (120) is provided with a first pipeline (121), a second pipeline (122) and a third pipeline (123), a second end, far away from the first pipeline (121), of the refrigerant cavity (120) is provided with a fourth pipeline (124), a first on-off piece (200) is arranged in the first pipeline (121), a second on-off piece (300) is arranged in the second pipeline (122), and the inside of the third pipeline (123) is kept smooth; A communication part (130) comprising a communication pipe (131), wherein a first end of the communication pipe (131) is communicated with the first pipe (121), and a second end of the communication pipe is communicated with the second pipe (122); The first end of the communicating pipe (131) is positioned at one side of the first on-off piece (200) far away from the fourth pipe (124), and the second end of the communicating pipe (131) is positioned at one side of the second on-off piece (300) far away from the fourth pipe (124); The first and second switching members (200, 300) are configured to be turned on when the refrigerant flows from the fourth pipe (124) to the first and second pipes (121, 122), respectively, and the refrigerant flowing from the second pipe (122) can flow to the first pipe (121) through the communication pipe (131) when the refrigerant flows from the first pipe (121) to the second pipe (124), to be turned on when the refrigerant flows from the first pipe (121) to the second pipe (122), and to be turned on when the communication pipe (131) is used for balancing the pressure and the flow between the first pipe (121) and the second pipe (122), or the first and second switching members (200, 300) are configured to be turned on when the refrigerant flows from the fourth pipe (124) to the first pipe (121) to the second pipe (122), respectively, and to be turned on when the refrigerant flows from the fourth pipe (124) to the first pipe (121) to the second pipe (122), respectively, to be turned on when the communication pipe (131) is used for balancing the pressure and the flow between the first pipe (121) and the second pipe (122), and to be turned on when the refrigerant flows from the first pipe (121) to the second pipe (122).
  2. 2. The on-off device according to claim 1, characterized in that the first on-off member (200) comprises: The valve seat (210) comprises a first valve cavity (211) and a second valve cavity (212) which are coaxially arranged, wherein a first valve inlet (2111) is formed in the first end of the first valve cavity (211), a valve outlet (2112) is formed in the side surface of the first valve cavity (211), the second end of the first valve cavity (211) is communicated with the first end of the second valve cavity (212), and a second valve inlet (2121) is formed in the second end of the second valve cavity (212); The valve comprises a valve core (220), a baffle (221) and a sliding rod (222) are arranged at the first end and the second end of the valve core, wherein the baffle (221) is positioned in a first valve cavity (211) and faces a first valve inlet (2111), and the sliding rod (222) is positioned in a second valve cavity (212) and faces a second valve inlet (2121); the second on-off member (300) has the same structure as the first on-off member (200).
  3. 3. The on-off device according to claim 2, wherein, Under the condition that the baffle plate (221) blocks the first valve inlet (2111), the distance between one end, far away from the baffle plate (221), of the sliding rod (222) and the second valve inlet (2121) is h1, the length of the second valve cavity (212) is h2, and h1 is less than h2.
  4. 4. The on-off device according to claim 2, wherein, The diameter of the first valve cavity (211) is larger than that of the second valve cavity (212), the diameter of the baffle plate (221) is matched with that of the first valve cavity (211), and the diameter of the sliding rod (222) is matched with that of the second valve cavity (212).
  5. 5. The on-off device according to claim 2, wherein, A boss (125) surrounding a through hole (126) is arranged on the side wall of the first pipeline (121), a valve seat (210) is arranged on one side of the boss (125), and a first valve inlet (2111) is in butt joint with the through hole (126); The plate surface of the baffle plate (221) facing the through hole (126) is in a frustum shape, and when the baffle plate (221) seals the through hole (126), the top surface of the frustum shape stretches into the through hole (126), and the side surface of the frustum shape is in contact with the hole edge of the through hole (126).
  6. 6. The on-off device according to any one of claims 1 to 5, characterized in that the communication portion (130) further includes: the pressure control cavity (140) is communicated with the refrigerant cavity (120), and the communicating pipeline (131) passes through the pressure control cavity (140) and then two ends of the communicating pipeline (131) are respectively communicated with the first pipeline (121) and the second pipeline (122); the part of the communication pipeline (131) positioned in the pressure control cavity (140) is called a flexible section (132), and the flexible section (132) is made of deformable flexible materials.
  7. 7. A variable flow split heat exchanger comprising an on-off device according to any one of claims 1 to 6.
  8. 8. A variable split-flow heat exchanger according to claim 7, characterized in that the variable split-flow heat exchanger comprises two on-off means, denoted as first means (101) and second means (102), respectively; the first on-off member (200) and the second on-off member (300) of the first device (101) are respectively configured to block when the refrigerant flows from the fourth pipe (124) to the first pipe (121) and the second pipe (122), respectively; the first and second on-off members (200, 300) of the second device (102) are also configured to block refrigerant flow from the first and second conduits (121, 122) to the fourth conduit (124), respectively.
  9. 9. A variable flow split heat exchanger as claimed in claim 8 further comprising: a first heat exchange path (410) having a first end in communication with the first conduit (121) of the first device (101) and a second end in communication with the third conduit (123) of the second device (102); A second heat exchange path (420) having a first end in communication with the second conduit (122) of the first device (101) and a second end in communication with the second conduit (122) of the second device (102); And a third heat exchange passage (430) having a first end in communication with the third conduit (123) of the first device (101) and a second end in communication with the first conduit (121) of the second device (102).
  10. 10. A variable flow split heat exchanger as claimed in claim 8 further comprising: the first (121), second (122) and third (123) conduits of the first device (101) are directed downwards, the fourth conduit (124) of the first device (101) is directed upwards, and/or, The first pipe (121), the second pipe (122), and the third pipe (123) of the second device (102) face upward, and the fourth pipe (124) of the first device (101) faces downward.
  11. 11. An air conditioner comprising a variable split heat exchanger as claimed in any one of claims 7 to 10.

Description

On-off device, variable flow-dividing heat exchanger and air conditioner Technical Field The application relates to the technical field of air conditioners, in particular to an on-off device, a variable flow dividing heat exchanger and an air conditioner. Background The heat exchanger plays a vital role in the air conditioner, is a key component in a refrigerant circulation system of the air conditioner, and has direct influence on the performance and efficiency of the air conditioner. In the prior art, in order to improve the heat exchange efficiency of an air conditioner, a plurality of flow dividing devices, a plurality of check valves and other valve body elements are arranged on a heat exchange passage of a heat exchanger, so that the refrigerant flow paths of the heat exchanger during refrigeration and heating are different. In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the plurality of valve body elements are arranged on the heat exchange passage, so that a large installation space is needed, more welding spots are generated during installation, and meanwhile, the cost is high. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows. The embodiment of the disclosure provides an on-off device, a variable flow-dividing heat exchanger and an air conditioner, wherein the on-off device integrates flow dividing and on-off functions, and the variable flow dividing function can be realized by only two on-off devices at least, so that the effect is more excellent and the cost is lower. In some embodiments, the on-off device comprises: The shell part comprises a refrigerant cavity, wherein a first end of the refrigerant cavity is provided with a first pipeline, a second pipeline and a third pipeline, and a second end of the refrigerant cavity, which is far away from the first pipeline, is provided with a fourth pipeline; the communication part comprises a communication pipeline, wherein the first end of the communication pipeline is communicated with the first pipeline, and the second end of the communication pipeline is communicated with the second pipeline; the first end of the communicating pipe is positioned at one side of the first on-off piece, which is far away from the fourth pipe, and the second end of the communicating pipe is positioned at one side of the second on-off piece, which is far away from the fourth pipe; The first and second on-off members are configured to be blocked when the refrigerant flows from the fourth pipe to the first and second pipes, respectively, and the refrigerant flowing from the second pipe may flow to the first pipe through the communication pipe when blocked, to be conducted when the refrigerant flows from the first and second pipes to the fourth pipe, and to balance the pressure and flow between the first and second pipes, or to be conducted when the refrigerant flows from the fourth pipe to the first and second pipes, respectively, and to balance the pressure and flow between the first and second pipes, and to be blocked when the refrigerant flows from the first and second pipes to the fourth pipe, respectively, and the refrigerant flowing from the first pipe to the second pipe may flow to the second pipe through the communication pipe when blocked. In some embodiments, the variable split heat exchanger comprises the on-off device. In some embodiments, the air conditioner includes the variable split heat exchanger. The on-off device, the variable flow-dividing heat exchanger and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects: The first on-off piece is used for controlling the conduction and the blocking of the first pipeline, the second on-off piece is used for controlling the conduction and the blocking of the second pipeline, and the third pipeline is not provided with the on-off piece, so that a smooth passage is always kept. Under the condition that the first on-off piece and the second on-off piece are conducted, a passage is formed between the fourth pipeline and the first pipeline, a passage is formed between the fourth pipeline and the second pipeline, and meanwhile, the first pipeline and the second pipeline are communicated through the communicating pipeline, so that pressure and flow between the first pi