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Multi-connected air conditioning system and control method thereof

A multi-connected air conditioner and control method technology, which is applied to air conditioning systems, refrigerators, heating methods, etc., can solve problems such as inconsistent floor temperature and unreasonable distribution of refrigerants, achieve uniform temperature, and improve user comfort.

Pending Publication Date: 2022-03-22
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention discloses a multi-connected air-conditioning system and its control method, which are used to at least solve the problems of unreasonable refrigerant distribution and inconsistency of corresponding floor temperatures in different floor heating pipeline systems due to differences in building loads

Method used

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  • Multi-connected air conditioning system and control method thereof

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Embodiment 1

[0044] In this embodiment, a multi-connected air conditioning system is provided, which mainly includes a compressor, an oil separator, a four-way valve, an outdoor heat exchanger, an outdoor electronic expansion valve, a subcooler, an electronic expansion valve for the subcooler, Vapor-liquid separator, ordinary internal unit (indoor heat exchanger) and electronic expansion valve corresponding to each internal unit, electronic expansion valve of floor heating system, capillary network, etc.

[0045] by figure 1 As an example, when the floor heating function is required in multiple rooms of the user, the floor heating function is realized by adjusting the opening of the electronic expansion valve 9 of the floor heating system. Due to the differences in the structure, orientation, wall-to-window ratio, number of occupants and many other factors of different rooms, the heat consumption rate of different rooms is different. There are differences in the building load of the rooms...

Embodiment 2

[0057] In this embodiment, a control method of a multi-connected air-conditioning system is provided, and the control method is used for controlling any one of the above-mentioned multi-connected air-conditioning systems. The control method includes: detecting the degree of subcooling at the outlet side of each capillary network; adjusting the opening degree of the corresponding electronic expansion valve 9 of the floor heating system according to the degree of subcooling, so as to balance the heating temperature in the corresponding room of each capillary network.

[0058] Preferably, adjusting the opening degree of the electronic expansion valve 9 of the corresponding floor heating system according to the degree of subcooling includes: closing the opening of the electronic expansion valve 9 of the corresponding floor heating system when the degree of subcooling is lower than the lower limit value of the preset subcooling degree interval. degree; when the subcooling degree is ...

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Abstract

The invention discloses a multi-connected air conditioning system and a control method thereof. The multi-connected air conditioning system comprises a compressor assembly, an oil separator connected to an outlet of the compressor assembly and a vapor-liquid separator connected to an inlet of the compressor assembly. The high-pressure gas side pipe and the low-pressure gas side pipe are connected in parallel and arranged on the outlet side of the oil separator; the liquid side pipe is communicated with the inlet side of the vapor-liquid separator; the capillary networks are connected in parallel between the high-pressure gas side pipe and the liquid side pipe, and a corresponding floor heating system electronic expansion valve is arranged on the outlet side of each capillary network; and the plurality of indoor heat exchangers are connected in parallel between the low-pressure gas side pipe and the liquid side pipe. According to the multi-connected air conditioning system, the opening degree of the electronic expansion valve is adjusted according to the supercooling degrees of refrigerants of different floor heating systems, the flow of the refrigerants in the floor heating pipelines is adjusted, the technical effect that the temperatures of the different floor heating systems are uniform and consistent is achieved, and the use comfort of a user is improved.

Description

technical field [0001] The invention relates to the technical field of multi-connected air-conditioning systems, in particular to a multi-connected air-conditioning system and a control method thereof. Background technique [0002] At present, multi-split units are more and more widely used in homes. In addition to conventional air conditioning functions, many families have functional requirements for air conditioning, heating and floor heating. At present, the multi-connected system of Teflon and Difluorine that is being promoted in the market can not only meet the functional needs of users for air-conditioning, heating and floor heating, but also show better performance advantages than the multi-connected system of Teflon and Diflu. [0003] However, when the dual-supply multi-connection system of Tian-Fluorine and Di-Fluorine is applied to a family with two or more floor heating pipeline systems, due to the difference in building loads, different floor heating pipeline sy...

Claims

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Application Information

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IPC IPC(8): F24F3/06F24F11/89F24F11/70F25B5/02F25B6/02F25B13/00F25B41/37F25B41/34F25B41/20F25B41/40F25B43/00F25B40/02F25B31/00F25B49/02
CPCF24F3/065F24F11/89F24F11/70F25B5/02F25B6/02F25B13/00F25B41/37F25B41/34F25B41/20F25B41/40F25B43/003F25B40/02F25B31/00F25B49/02Y02B30/70
Inventor 王志豪李龙飞倪毅戎耀鹏邹优锦王芳
Owner GREE ELECTRIC APPLIANCES INC
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