Two-tube heat recovery multi-split system and air conditioning outdoor unit thereof

A technology of outdoor units and multi-connected systems of air conditioners, which is applied in the direction of refrigerators, compressors, refrigeration components, etc., can solve the problems of small refrigerant circulation, insufficient heating capacity, and low return air density, so as to increase the refrigerant circulation. Improved heating effect and improved comfort

Active Publication Date: 2019-02-26
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing two-pipe heat recovery multi-connected system does not have a low-temperature and strong-heating model. In a low-temperature environment, because of low ambient temperature, low pressure, low return air density, and small refrigerant circulation volume, there is a problem of insufficient heating capacity. question

Method used

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  • Two-tube heat recovery multi-split system and air conditioning outdoor unit thereof
  • Two-tube heat recovery multi-split system and air conditioning outdoor unit thereof
  • Two-tube heat recovery multi-split system and air conditioning outdoor unit thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The fourth pipeline 404 is provided with a first control valve 208 capable of controlling its on-off, such as figure 1 and figure 2 shown.

[0076] The first control valve 208 is set on the fourth pipeline 404, and the first control valve 208 can control the on-off of the fourth pipeline 404, so as to realize the selective on-off of the fourth pipeline 404. In this way, in cooling operation and other systems When there is no need for enthalpy injection and supplementary air, the fourth pipeline 404 can be disconnected through the first control valve 208 to prevent other functions of the system (such as pure cooling mode, main cooling mode, etc.) from being affected, thereby improving the system efficiency. reliability.

[0077] Preferably, the first control valve 208 is a solenoid valve.

[0078] Using the solenoid valve as the first control valve 208 can not only effectively control the on-off of the fourth pipeline 404, but also facilitate automatic control in coo...

Embodiment 2

[0099] The difference from Embodiment 1 is that: the outdoor main throttling device 61 and / or the outdoor auxiliary throttling device 62 include multiple throttling elements connected in parallel.

Embodiment 3

[0101] The difference with Embodiment 1 is:

[0102] The outdoor main throttling device 61 and / or the outdoor auxiliary throttling device 62 include at least one throttling element and a diverting solenoid valve, and at least one throttling element and the diverting solenoid valve are connected in parallel.

[0103] The outdoor main throttling device 61 and the outdoor auxiliary throttling device 62 mainly perform the function of throttling and reducing pressure, and their specific forms are not limited. For example: it can include only one throttling element, or it can include multiple throttling elements connected in parallel, or it can be a throttling element and a shunt solenoid valve (that is, a solenoid valve that acts as a shunt to prevent all refrigerant from entering the throttling Components) parallel combination, etc., can also be other forms; and the form of the throttling element is not limited, such as capillary, electronic expansion valve 92, etc., are not liste...

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Abstract

The invention provides a two-tube heat recovery multi-split system and an air conditioning outdoor unit thereof. The air conditioning outdoor unit comprises a main circulation flow path, wherein the main circulation flow path comprises an enhanced-vapor injection compressor, a reversing device and an outdoor heat exchanger which are connected through pipelines; an enhanced-vapor injection flow path, which comprises an outdoor subcooler, an outdoor main throttling device and an outdoor auxiliary throttling device, wherein the outdoor subcooler is provided with a main path and an auxiliary path,an inlet of the main path is communicated with a refrigerant input pipe through a first pipeline, an outlet of the main path is respectively connected with an input end of the outdoor heat exchangerand the inlet of the auxiliary path through a second pipeline and a third pipeline, the outlet of the auxiliary path is communicated with an air injection port of the enhanced-vapor injection compressor through a fourth pipeline, the outdoor main throttling device is arranged on the second pipeline, and the outdoor auxiliary throttling device is arranged on the third pipeline. By the adoption of the two-tube heat recovery multi-split system and the air conditioning outdoor unit thereof, the enhanced-vapor injection compressor technology is used and the outdoor subcooler and the outdoor throttling device are added, so that the two-tube system has a function of enhanced-vapor injection by heating, and a low-temperature heating capacity of the system is obviously improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a two-pipe heat recovery multi-connection system and an air conditioner outdoor unit thereof. Background technique [0002] At present, the existing two-pipe heat recovery multi-connection system does not have a low-temperature and strong-heating model. In a low-temperature environment, low pressure due to low ambient temperature, low return air density, and small refrigerant circulation volume lead to insufficient heating capacity. question. Contents of the invention [0003] In order to solve at least one of the above technical problems, an object of the present invention is to provide an air conditioner outdoor unit for a two-pipe heat recovery multi-connected system. [0004] Another object of the present invention is to provide a two-pipe heat recovery multi-connection system comprising the above air conditioner outdoor unit. [0005] In order to achieve the abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B41/04F25B41/06F25B41/20F25B41/34F25B41/37
CPCF25B13/00F25B2313/02741F25B2313/027F25B2313/0233F25B41/30F25B41/20
Inventor 颜利波杨国忠王命仁
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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