Heat pump air conditioning system

CN122041402APending Publication Date: 2026-05-15QINGDAO HAIER SMART TECH R & D CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO HAIER SMART TECH R & D CO LTD
Filing Date
2026-02-03
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing gas replenishment and enthalpy enhancement technologies are complex to improve the heating capacity of air conditioning systems, and the heating capacity is severely reduced at low temperatures, failing to meet user needs.

Method used

The refrigerant is subcooled by a gas injection and enthalpy-increasing pipeline between the flash tank and the compressor and an economizer. Combined with the controller dynamically adjusting the opening of the throttling element, dynamic two-stage gas injection and dual throttling element coordinated control are achieved to improve heating capacity and energy efficiency in low-temperature environments.

Benefits of technology

By dynamically adjusting the opening of the throttling element, the subcooling and suction superheat are ensured to be within the preset range, which improves the low-temperature heating capacity and energy efficiency of the heat pump air conditioning system and reduces the reduction of heating capacity attenuation.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122041402A_ABST
    Figure CN122041402A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of air conditioning systems, and discloses a heat pump air conditioning system which comprises a refrigerant circulation flow path composed of a compressor, a four-way valve, a condenser and an evaporator, and further comprises a flash tank, an air supply enthalpy increasing pipeline is arranged between the flash tank and the compressor, a first refrigerant pipe section is further communicated between the flash tank and the condenser, and a second refrigerant pipe section is further communicated between the flash tank and the condenser. The first refrigerant pipe section is provided with a first throttling element; the economizer is arranged between the evaporator and the flash tank and is used for supercooling the refrigerant flowing out of the flash tank; and the controller is configured to obtain the current supercooling degree of the condenser and adjust the opening degree of the first throttling element according to the current supercooling degree.
Need to check novelty before this filing date? Find Prior Art