Air conditioning device

A technology for air conditioning and throttling components, which is applied in air conditioning systems, high-efficiency conditioning technology, climate sustainability, etc. It can solve the problems of poor comfort, slow defrosting speed, and high compressor power consumption, and ensure defrosting reliability. , The effect of increasing the defrosting speed and reducing the power consumption of defrosting

Active Publication Date: 2021-03-05
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the high power consumption of the compressor during defrosting in the prior art, the power consumption of the defrosting process is

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The present invention provides an embodiment of an air conditioning device, comprising:

[0044]A refrigerant circulation loop formed by connecting the outdoor heat exchanger 100, the indoor heat exchanger 200, the compressor 300, the throttling element 400 and the four-way valve 500;

[0045] Specifically, a refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to air that has been conditioned and heat-exchanged.

[0046] The compressor 300 compresses refrigerant gas in a high temperature and high pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0047] The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed...

Embodiment 2

[0071] The present invention provides an embodiment of an air conditioning device, comprising:

[0072] A refrigerant circulation loop formed by connecting the outdoor heat exchanger 100, the indoor heat exchanger 200, the compressor 300, the throttling element 400 and the four-way valve 500;

[0073] The high and low pressure bypass circuit 600 is connected between the outlet side of the compressor 300 and the return side of the compressor 300, and a first bypass control element 610 is arranged on the high and low pressure bypass circuit 600;

[0074] The first temperature detection element is arranged on the liquid pipe side of the outdoor heat exchanger 100, and is used to detect the temperature on the liquid pipe side. For the convenience of description, in this embodiment, the temperature value detected by the first temperature detection element is set as Te;

[0075] The second temperature detection element is used to detect the outdoor temperature, and the temperature v...

Embodiment 3

[0095] The present invention proposes an embodiment of an air conditioning device, comprising:

[0096] A refrigerant circulation loop formed by connecting the outdoor heat exchanger 100, the indoor heat exchanger 200, the compressor 300, the throttling element 400 and the four-way valve 500;

[0097] The high and low pressure bypass circuit 600 is connected between the outlet side of the compressor 300 and the return side of the compressor 300, and a first bypass control element 610 is arranged on the high and low pressure bypass circuit 600;

[0098] The first temperature detection element is arranged on the liquid pipe side of the outdoor heat exchanger 100, and is used to detect the temperature of the liquid pipe side;

[0099] The second temperature detection element is used to detect the outdoor temperature;

[0100] The outdoor fan 700 is arranged on the side of the outdoor heat exchanger 100;

[0101] The controller is configured to: when the obtained temperature val...

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Abstract

The invention discloses an air conditioning device. The air conditioning device comprises a refrigerant circulation loop, a high-low pressure bypass loop, a first temperature detection element, a second temperature detection element, an outdoor draught fan, and a controller; the high-low pressure bypass loop is connected between the air outlet side of a compressor and the air return side of the compressor; a first bypass control element is arranged above the high-low pressure bypass loop; the first temperature detection element is used for detecting the temperature of a liquid pipe side; and the second temperature detection element is used for detecting the outdoor temperature. The controller is configured to reduce the frequency of the compressor to a first preset frequency, conduct the high-low pressure bypass loop, control a throttling element to a first preset opening degree, and control the outdoor draught fan to reach a first preset rotating speed when the obtained temperature value detected by the second temperature detection element is larger than a first preset temperature, the continuous heating time is longer than a first preset time and the liquid pipe side temperatureis smaller than a first liquid pipe preset temperature; and a four-way valve is controlled according to the detected defrosting time and the detected liquid pipe side temperature. The air conditioningdevice solves the problems that the compressor power consumption is high and the power consumption in the defrosting process is large during defrosting of an existing air conditioner.

Description

technical field [0001] The invention relates to the technical field of air conditioning equipment, in particular to an improvement of the structure of an air conditioning device. Background technique [0002] When the air conditioning device is heating in winter, the heat exchanger of the outdoor unit is used as an evaporator. When the surface temperature of the evaporator is lower than zero and lower than the dew point temperature of the humid air, frost will occur, and the frost will increase the heat transfer rate of the heat exchanger. When the amount of frost reaches a certain level, it will seriously affect the heat exchange effect of the heat exchanger, and defrosting operation is required. At present, the most commonly used defrosting methods for air conditioning systems are: four-way valve reversing defrosting and hot gas bypass defrosting. [0003] When the reversing defrosting system meets the defrosting conditions, the four-way valve is reversing. At this time, ...

Claims

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Application Information

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IPC IPC(8): F25B13/00F25B41/20F25B47/02F25B49/02F24F5/00
CPCF25B13/00F25B47/025F24F5/001F25B2313/02741F25B2313/029F25B2400/19F25B2313/0251Y02B30/70
Inventor 张恒邓玉平夏兴祥陈林
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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