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Control systems and methods for hvac units and media including such processor-executable instructions

A controller and control module technology, used in refrigeration and liquefaction, refrigerators, refrigeration components, etc., to solve problems such as reducing HVAC system performance and reducing compressor performance.

Active Publication Date: 2022-06-03
JOHNSON CONTROLS TYCO IP HLDG LLP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, liquid injection means include additional components (eg, tubes, pumps, nozzles, etc.) to inject liquid refrigerant into the compressor
In addition, injecting liquid refrigerant into the compressor may reduce the performance of the compressor, and thus the performance of the HVAC system

Method used

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  • Control systems and methods for hvac units and media including such processor-executable instructions
  • Control systems and methods for hvac units and media including such processor-executable instructions
  • Control systems and methods for hvac units and media including such processor-executable instructions

Examples

Experimental program
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Embodiment Construction

[0011] Embodiments of the present disclosure relate to heating, ventilation and air conditioning (HVAC) systems that are

[0014] FIG. 2 is an embodiment of a vapor compression system 72 that may be used in the HVAC unit 12 described above. Vapor Compression System

[0015] In some embodiments, the vapor compression system 72 may use a variable speed drive (VSD) 92, motor 94, compression

[0017] The liquid refrigerant delivered to the evaporator 80 may absorb heat from another airflow, such as provided to the building 10

[0018] In some embodiments, in addition to the evaporator 80, the vapor compression system 72 may further include a reheat tray

[0019] It should be understood that any of the features described herein may be used with HVAC unit 12, residential heating and cooling systems

[0020] As discussed above, in some embodiments, the expansion device 78 is an electronic expansion valve (EEV), which may be

[0022] The storage device 108 may include volatile memory (eg,...

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PUM

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Abstract

A heating, ventilation and air conditioning (HVAC) system (10), comprising: a vapor compression system (72) having a refrigerant; a compressor (74) of the vapor compression system (72), the compressor being configured to cause the refrigerant circulation through the vapor compression system (72); an expansion device (78) of the vapor compression system (72), the expansion device configured to regulate the flow of refrigerant through the vapor compression system (72); and a controller ( 104), the controller configured to adjust the expansion based on the measured superheat of the refrigerant entering the compressor (74), the measured discharge temperature of the refrigerant leaving the compressor (74), or a combination thereof The device (78) is positioned such that the measured superheat of the refrigerant entering the compressor (74) reaches the target superheat, the measured discharge temperature of the refrigerant leaving the compressor (74) reaches the target discharge temperature, or its combination.

Description

Control system and control method for an HVAC unit and including such a processor may medium for executing instructions Background technique [0001] The present disclosure relates generally to heating, ventilation and air conditioning systems. In particular, the present disclosure relates to use in vapor compression systems for Systems and methods for electronic expansion valve (EEV) control. [0002] Heating ventilation and air conditioning (HVAC) systems have a wide variety of applications. For example, residential, commercial, and industrial systems are used to utilize Fluids such as refrigerants to control the temperature and air in homes and buildings. HVAC systems can circulate refrigerant through evaporation A closed circuit between the evaporator and the condenser, the refrigerant absorbs heat at the evaporator and the refrigerant releases heat at the condenser. example For example, the refrigerant can absorb heat from the first fluid and transfer heat to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02
CPCF25B49/02F25B2600/21F25B2600/2513F25B2700/197F25B2700/21152F25B2700/21175Y02B30/70F25B41/34F25B2700/1933F25B2700/21151F25B2700/21156F25B41/31
Inventor 盖尔·伊莱恩·林德伯格柯蒂斯·克里斯蒂安·克莱恩卡洛斯·何塞·乌瑞比
Owner JOHNSON CONTROLS TYCO IP HLDG LLP