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CN-121977306-A - Heat exchanger and heat pump unit

CN121977306ACN 121977306 ACN121977306 ACN 121977306ACN-121977306-A

Abstract

The embodiment of the application provides a heat exchanger and a heat pump unit, and relates to the technical field of heat pump units, wherein the heat exchanger comprises a first heat exchange loop, a second heat exchange loop and a third heat exchange loop, wherein the first heat exchange loop is used for being connected with another heat exchange device; the device comprises a compressor, a first gas-liquid separator, a second heat exchange loop, a gas-liquid separator and a third gas-liquid separator, wherein the first gas-liquid separator is connected with the compressor and the heat exchange equipment, a first one-way valve for enabling a refrigerant to flow to the first gas-liquid separator in a one-way mode is arranged between the gas-liquid separator and the first gas-liquid separator, a second one-way valve for enabling the refrigerant to flow to the heat exchange pipeline in a one-way mode is arranged between the gas-liquid separator and the heat exchange pipeline, and a third one-way valve for enabling the refrigerant to flow to the gas-liquid separator in a one-way mode is arranged between the gas-liquid separator and the first gas-liquid separator so as to effectively reduce the flow resistance of the refrigerant.

Inventors

  • SHI YUNDONG
  • PAN CUILIAN
  • SUN QIANG
  • Zu Jiahong
  • ZHOU SHIQIAO
  • LI XUETAO
  • GAO JIAYANG

Assignees

  • 青岛海尔新能源电器有限公司
  • 郑州海尔新能源科技有限公司
  • 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
20260505
Application Date
20260120

Claims (10)

  1. 1. A heat exchanger, comprising: A first heat exchange circuit (110), the first heat exchange circuit (110) being adapted to be connected to a further heat exchange device; A second heat exchange circuit (120), wherein the second heat exchange circuit (120) comprises a heat exchange pipeline (121) and a first gas collecting pipe (122), the heat exchange pipeline (121) is connected with the first gas collecting pipe (122), and the first gas collecting pipe (122) is used for being connected with a compressor (300) and the heat exchange equipment; The gas-liquid separator (130), gas-liquid separator (130) with first heat exchange circuit (110) are connected, be provided with on the connecting line between gas-liquid separator (130) with first gas-collecting vessel (122) and make refrigerant one-way flow extremely first check valve (140) of first gas-collecting vessel (122), be provided with on the connecting line between gas-liquid separator (130) with heat exchange pipeline (121) make refrigerant one-way flow extremely second check valve (150) of heat exchange pipeline (121), be provided with on the connecting line between gas-liquid separator (130) with first gas-collecting vessel (122) make refrigerant one-way flow extremely third check valve (160) of gas-liquid separator (130).
  2. 2. The heat exchanger according to claim 1, wherein the first heat exchange circuit (110) comprises a first tube section (111) and a second tube section (112) arranged in series, a first expansion valve (180) is arranged on a connecting tube between the first tube section (111) and the second tube section (112), the first tube section (111) is used for being connected with the heat exchange equipment, and the second tube section (112) is connected with the gas-liquid separator (130).
  3. 3. The heat exchanger according to claim 2, wherein the first heat exchange circuit (110) further comprises a second header (113), the second header (113) connecting the second pipe section (112) with the gas-liquid separator (130).
  4. 4. The heat exchanger according to claim 1, wherein the second heat exchange circuit (120) further comprises a distributor (123), the second non-return valve (150) being provided on a connection line between the distributor (123) and the heat exchange line (121).
  5. 5. The heat exchanger according to claim 4, wherein the heat exchange line (121) comprises a third tube section (1211) and a fourth tube section (1212) arranged in parallel, the first gas collecting tube (122) comprises a first gas collecting portion (1221) and a second gas collecting portion (1222), a fourth check valve (170) for enabling a unidirectional flow of a refrigerant to the first gas collecting portion (1221) is arranged on a connecting tube between the first gas collecting portion (1221) and the second gas collecting portion (1222), the first gas collecting portion (1221) is used for connecting the compressor (300), and the second gas collecting portion (1222) is connected with the first check valve (140) and the third check valve (160).
  6. 6. The heat exchanger according to claim 5, wherein the distributor (123) comprises a first distributor (1231) and a second distributor (1232) connected in series, the outlet of the second one-way valve (150) being connected to the inlet of the first distributor (1231), the outlet of the first distributor (1231) being connected to the third pipe section (1211), the outlet of the second distributor (1232) being connected to the fourth pipe section (1212).
  7. 7. A heat pump assembly comprising a compressor (300), a water side heat exchanger (200) and a heat exchanger according to any of claims 1-6, wherein the first heat exchange circuit (110) of the heat exchanger is connected to the water side heat exchanger (200), and wherein the first gas collecting tube (122) of the heat exchanger is connected to the compressor (300) and the water side heat exchanger (200).
  8. 8. The heat pump assembly of claim 7, further comprising a four-way reversing valve (400), wherein four ports of the four-way reversing valve (400) are connected to the outlet of the compressor (300), the water side heat exchanger (200), the first header (122) of the heat exchanger, and the inlet of the compressor (300), respectively.
  9. 9. Heat pump unit according to claim 7, characterized in that a second expansion valve (500) is arranged on the connection line between the first heat exchange circuit (110) of the heat exchanger and the water side heat exchanger (200).
  10. 10. The heat pump assembly according to claim 9, further comprising a plate heat exchanger (600) and an auxiliary circuit expansion valve (700), wherein a first channel of the plate heat exchanger (600) is connected in series between a second expansion valve (500) and the first heat exchange circuit (110), wherein a second channel of the plate heat exchanger (600) is connected in series between the auxiliary circuit expansion valve (700) and a make-up port of the compressor (300), and wherein the auxiliary circuit expansion valve (700) is further connected with a pipe connecting the first heat exchange circuit (110) and the first channel.

Description

Heat exchanger and heat pump unit Technical Field The application relates to the technical field of heat pump units, in particular to a heat exchanger and a heat pump unit. Background The heat pump unit absorbs heat from one place (low temperature heat source) and releases heat to the other place (high temperature heat source) through the phase change circulation of the refrigerant. While heat exchangers are often referred to as evaporators and condensers, it is the location where this heat exchange is accomplished. In the running process of the heat pump unit, the refrigerant enters the heat exchanger in a gas-liquid two-phase state after throttling, and if the refrigerant is directly distributed to a heat exchange pipeline, the refrigerant is easily distributed unevenly, so that the flow resistance is increased, and the heat exchange efficiency is reduced. Disclosure of Invention The embodiment of the application provides a heat exchanger and a heat pump unit, which are used for achieving the effect of avoiding uneven refrigerant distribution. In a first aspect, an embodiment of the present application provides a heat exchanger, including: The first heat exchange loop is used for being connected with another heat exchange device; the second heat exchange loop comprises a heat exchange pipeline and a first gas collecting pipe, the heat exchange pipeline is connected with the first gas collecting pipe, and the first gas collecting pipe is used for being connected with a compressor and the heat exchange equipment; the gas-liquid separator is connected with the first heat exchange loop, a first one-way valve enabling the refrigerant to flow unidirectionally to the first gas collecting tube is arranged between the gas-liquid separator and the first gas collecting tube, a second one-way valve enabling the refrigerant to flow unidirectionally to the heat exchange tube is arranged between the gas-liquid separator and the heat exchange tube, and a third one-way valve enabling the refrigerant to flow unidirectionally to the gas-liquid separator is arranged between the gas-liquid separator and the first gas collecting tube. In one possible embodiment, the first heat exchange circuit includes a first pipe section and a second pipe section arranged in series, a first expansion valve is arranged between the first pipe section and the second pipe section, the first pipe section is connected with another heat exchanger, and the second pipe section is connected with the gas-liquid separator. In one possible embodiment, the first heat exchange circuit further comprises a second header connecting the second pipe section with the gas-liquid separator. In one possible embodiment, the second heat exchange circuit further comprises a distributor connecting the second one-way valve with the heat exchange line. In one possible implementation manner, the heat exchange pipeline comprises a third pipe section and a fourth pipe section which are arranged in parallel, the first gas collecting pipe comprises a first gas collecting part and a second gas collecting part, a fourth one-way valve for enabling the refrigerant to flow to the first gas collecting part in a one-way mode is arranged between the first gas collecting part and the second gas collecting part, the first gas collecting part is used for being connected with the compressor, and the second gas collecting part is connected with the first one-way valve and the third one-way valve. In one possible embodiment, the dispenser comprises a first dispenser and a second dispenser connected in series, an outlet of the second one-way valve being connected to an inlet of the first dispenser, an outlet of the first dispenser being connected to the third tube section, and an outlet of the second dispenser being connected to the fourth tube section. In a second aspect, an embodiment of the present application provides a heat pump unit, including a compressor, a water side heat exchanger, and a heat exchanger according to any one of the first aspects, where a first heat exchange loop of the heat exchanger is connected to the water side heat exchanger, and a first gas collecting tube of the heat exchanger is connected to the compressor and the water side heat exchanger. In one possible embodiment, the device further comprises a four-way reversing valve, wherein four interfaces of the four-way reversing valve are respectively connected to the outlet of the compressor, the water side heat exchanger, the first gas collecting pipe of the heat exchanger and the inlet of the compressor. In one possible embodiment, a second expansion valve is arranged on the connection line between the first heat exchange circuit of the heat exchanger and the water-side heat exchanger. In one possible embodiment, the heat exchanger further comprises a plate heat exchanger and an auxiliary expansion valve, wherein a first channel of the plate heat exchanger is connected in series between a second expansion valve