Unlock instant, AI-driven research and patent intelligence for your innovation.

Air-conditioning system and refrigerant flow control method

A refrigerant flow and air-conditioning system technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as unstable control of air-conditioning systems

Active Publication Date: 2021-02-19
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the objectives of the present invention is to provide an air-conditioning system, which is used to assist in adjusting low-temperature heating through capillary tubes, resulting in poor reliability of the compressor and unstable control of the air-conditioning system caused by flow fluctuations passing through the electronic expansion valve. Timely auxiliary adjustment of refrigerant flow, improve the control reliability and stability of the air conditioner system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Air-conditioning system and refrigerant flow control method
  • Air-conditioning system and refrigerant flow control method
  • Air-conditioning system and refrigerant flow control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 2 As shown, it shows the structural diagram of the first embodiment of the air conditioning system of the present invention. In the first embodiment, only one indoor unit 200 is shown, and in the first embodiment, the connection pipeline between the outdoor heat exchanger 110 and the electronic expansion valve 150 is provided with a plurality of one-way valves and capillary tubes. 186 forms a bridge circuit, the refrigerant flow is controlled by the electronic expansion valve 150 and the capillary 186, the check valve 183, the solenoid valve 184 and the pipelines between them form the first flow path, the check valve 183, the capillary 186, The one-way valve 185 and the pipeline between them form the second flow path, and the one-way valve 181, the one-way valve 182 and the pipeline between them form the third flow path. Specifically, refer to figure 2 , describing its working process. When the air conditioner is cooling, the four-way valve 140 is clo...

Embodiment 2

[0031] Such as image 3 As shown, it shows the structural diagram of the second embodiment of the air conditioning system of the present invention. In the second embodiment, a solenoid valve 182' is set on the first flow path, a capillary 184' and a one-way valve 183' are set on the second flow path, and a one-way valve 181' is set on the third flow path. Specifically, refer to image 3 , describing its working process. In the cooling mode of the air conditioner, the outdoor heat exchanger 110 condenses into high-temperature and high-pressure liquid refrigerant through the check valve 181' and flows into the electronic expansion valve 150; The liquid refrigerant is throttled by the electronic expansion valve 150 to become a low-temperature and low-pressure liquid refrigerant, and the low-temperature and low-pressure liquid refrigerant flows into the outdoor heat exchanger 110 through the solenoid valve 182'; The low-temperature and low-pressure liquid refrigerant flows into ...

Embodiment 3

[0035] Please refer to Figure 4 , Figure 4 Shows a flowchart of an embodiment of the refrigerant flow control method of the present invention, the flow of this embodiment is based on figure 2 with image 3 In the air conditioning system shown, refrigerant flow control is performed on different modes of the air conditioning system.

[0036] For the convenience of description, in this embodiment, the image 3 The structure of the air conditioning system is taken as an example to carry out the description of this flowchart.

[0037] S401: Power on and start the air conditioning system.

[0038] S402: Determine the working mode of the air conditioning system. This article only cares about the cooling mode and heating mode of the air conditioning system, where the heating modes include normal temperature heating mode, first low temperature heating mode and second low temperature heating mode.

[0039] S403: Determine whether the working mode is heating mode or cooling mode,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an air conditioning system and a refrigerant flow control method. The outdoor unit has an electronic expansion valve and an outdoor heat exchanger connected through a connecting pipeline, and the connecting pipeline between the outdoor heat exchanger and the electronic expansion valve is provided with a second The first flow path, the second flow path and the third flow path, the first flow path or the second flow path are provided with capillaries; at T 室外 ≤ T1, f 压机 ≥f and P 排气 ≤P, the refrigerant flowing out of the electronic expansion valve flows into the outdoor heat exchanger through the flow path with capillary tubes, and at T 室外 ≤T1 and f 压机 <(f‑Δf), or T 室外 ≤T1 and P 排气 >(P+ΔP), or T 室外 >(T1+ΔT), the refrigerant flowing out of the electronic expansion valve flows into the outdoor heat exchanger through another flow path without a capillary tube. In cooling mode, the refrigerant flowing out of the outdoor heat exchanger flows into the electronic expansion valve through the third flow path. Expansion valve. The invention assists in adjusting the flow through the electronic expansion valve during heating through the capillary tube.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to an air conditioning system and a refrigerant flow control method. Background technique [0002] In the existing central air-conditioning system, such as figure 1 As described, the central air-conditioning system includes an outdoor unit 100 and a plurality of indoor units 200 ( figure 1 Only one indoor unit is shown in the figure), and the indoor unit 200 and the outdoor unit 100 are connected through refrigerant connection pipes. The indoor unit 200 is equipped with an indoor heat exchanger 210, an indoor fan 220, and an electronic expansion valve 230. The outdoor unit 100 includes an outdoor heat exchanger 110, an outdoor fan 120, an inverter compressor 130, and a four-way valve connected through a refrigerant connection pipeline. 140 , electronic expansion valve 150 , oil separator 160 and capillary 170 . [0003] When the air conditioner is cooling, th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F11/67F24F11/84F24F110/12F24F140/12F24F140/50
CPCF24F11/64F24F11/67F24F11/84F24F2110/12F24F2140/12F24F2140/50
Inventor 颜鹏孙杨赵耀强李丛来韩飞
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST