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Air conditioning device

An air-conditioning device and outdoor heat exchanger technology, applied in air-conditioning systems, space heating and ventilation, space heating and ventilation details, etc., can solve the problems of frequent start and stop of compressors, failure to work, high power consumption, etc., to achieve The effect of reducing power consumption, improving efficiency, and reducing heat transfer capacity

Pending Publication Date: 2021-12-07
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides an air conditioner, which solves the technical problems in the prior art that the compressor frequently starts and stops, fails to work, has low efficiency and high power consumption caused by excessive heat transfer of the outdoor heat exchanger.

Method used

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Examples

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Embodiment 1

[0024] The air conditioner includes an outdoor unit, the outdoor unit includes a compressor, an outdoor fan and at least two parallel outdoor branches, and the outdoor branch includes a throttling device and an outdoor heat exchanger.

[0025] In this embodiment, the air conditioner includes two outdoor branch circuits, and each outdoor branch circuit includes a throttling device and an outdoor heat exchanger connected in series for illustration. Wherein, two outdoor heat exchangers share one outdoor fan.

[0026] Such as figure 2 As shown, the refrigeration cycle is described as an example to describe the refrigerant circulation process: 1) The compressor 2 sucks the low-pressure gaseous refrigerant from the gas-liquid separator 1 and compresses it into high-temperature and high-pressure gas and discharges it into the outdoor heat exchanger; In the first outdoor heat exchanger 4a, it enters the first throttling device 5a after heat exchange with air for cooling, condensatio...

Embodiment 2

[0045] The air conditioner includes an outdoor unit, the outdoor unit includes a compressor, an outdoor fan and at least two parallel outdoor branches, and the outdoor branch includes a throttling device and an outdoor heat exchanger.

[0046] In this embodiment, the air conditioner includes two outdoor branch circuits, and each outdoor branch circuit includes a throttling device and an outdoor heat exchanger connected in series for illustration. Wherein, each outdoor heat exchanger is equipped with an outdoor fan.

[0047] Such as image 3 As shown, the refrigeration cycle is described as an example to describe the refrigerant circulation process: 1) The compressor 2 sucks the low-pressure gaseous refrigerant from the gas-liquid separator 1 and compresses it into high-temperature and high-pressure gas and discharges it into the outdoor heat exchanger; In the first outdoor heat exchanger 4a / second outdoor heat exchanger 4b, it enters the first throttling device 5a / second thro...

Embodiment 3

[0063] The air conditioner includes at least two outdoor machines, at least one outdoor machine includes a compressor, an outdoor fan and at least two parallel outdoor branches, and the outdoor branches include a throttling device and an outdoor heat exchanger.

[0064]The control module has at least three schemes with different heat exchange capacities according to the number of outdoor heat exchangers through which the airflow generated by the outdoor fan flows, and the control module is used to select the scheme whose heat exchange capacity of the outdoor heat exchanger is closest to the required heat exchange capacity.

[0065] Specifically, the control module is used to select a scheme in which the actual discharge pressure of the compressor is close to the target pressure Pdo and not greater than the target pressure Pdo under the cooling condition; the control module is used to select the actual discharge pressure of the compressor under the heating condition. A scheme in...

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PUM

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Abstract

The invention relates to an air conditioning device. The air conditioning device comprises an outdoor unit, the outdoor unit comprises a compressor, an outdoor fan and at least two parallel outdoor branches, and each outdoor branch comprises a throttling device and an outdoor heat exchanger; the air conditioning device further comprises a control module used for controlling the heat exchange area of heat exchange between the outdoor heat exchanger and airflow generated by the outdoor fan to be reduced when the heat exchange amount of the outdoor heat exchanger is larger than the required heat exchange amount, so that the heat exchange capacity of the outdoor heat exchanger is reduced, the operation stability of the compressor is guaranteed, the efficiency of the compressor is improved, and power consumption is reduced.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to an air conditioner. Background technique [0002] In order to enhance the capacity of the unit, the outdoor fan and outdoor heat exchanger of the existing large-capacity air-conditioning unit generally adopt the following three structural designs: Figure 1a , two outdoor heat exchangers, two throttling devices, and one outdoor fan; Figure 1b , two outdoor heat exchangers, two throttling devices, two outdoor fans; Figure 1c , One-piece long-pipe outdoor heat exchanger, a throttling device, and an outdoor fan. If the single-module unit cannot meet the capacity required by the project, a multi-module combination will be used. [0003] Heating process with double heat exchanger and double fan structure ( Figure 1b ) as an example to describe the cycle process, the flow direction of the refrigerant is indicated by the arrow in the figure, the solid line indicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/10F24F1/16F24F1/38F24F11/64F24F11/65F24F11/61F24F11/84F24F11/871F24F11/86F24F13/30F24F140/12F24F140/50
CPCF24F1/10F24F1/16F24F1/38F24F11/64F24F11/65F24F11/84F24F11/871F24F11/86F24F11/61F24F13/30F24F2140/12F24F2140/50
Inventor 周敏张恒董辰
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST