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

Air conditioning system

A technology for air-conditioning systems and outdoor units, applied to lighting and heating equipment, refrigeration components, mechanical equipment, etc., can solve problems such as short circuit and system stop

Inactive Publication Date: 2018-03-27
MITSUBISHI HEAVY IND THERMAL SYST
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As mentioned above, when an abnormality such as a compressor failure occurs, the direction of the four-way switching valve is different between the outdoor units, and if the operation continues as it is, the high-pressure refrigerant and the low-pressure refrigerant will short-circuit, and the system will stop due to high-pressure cutoff.

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
  • Air conditioning system
  • Air conditioning system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0042] Below, use Figure 1 to Figure 8 A first embodiment of the present invention will be described.

[0043] figure 1 In , a refrigerant circuit diagram showing a state in which the air conditioning system of this embodiment is operated in a refrigeration cycle, figure 2 , shows the configuration diagram of the four-way switching valve installed in this refrigerant circuit, image 3 In , a refrigerant circuit diagram showing a state in which the system is operated in a heating cycle is shown.

[0044] The air conditioning system 1 of the present embodiment adopts a system in which each of a plurality of outdoor units 2A, 2B and a plurality of indoor units 3A, 3B are connected in parallel to each other via so-called transition refrigerant liquid pipes 4 and refrigerant gas pipes 5 to constitute one The refrigeration cycle of the system6.

[0045] A plurality of outdoor units 2A, 2B are connected to a compressor 10 , an oil separator 11 , a check valve 12 , a four-way sw...

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

An air conditioning system (1) provided with backup operation control units (61A, 61B) that, when a compressor (10) of a particular outdoor unit among a plurality of outdoor units (2A, 2B) has malfunctioned, carries out a backup operation for the normal outdoor unit, wherein the backup operation control units (61A, 61B) are provided with four-way-switching-valve synchronization control units (62A,62B) such that when the four-way switching valves (13) are operated during the backup operation by being switched from an air-cooling position to an air-warming position, the four-way switching valve(13) in the normal-functioning outdoor unit is operated so as to be temporarily placed in the air-cooling position, the low pressure of the malfunctioning outdoor unit is reduced, the four-way switching valve (13) in the malfunctioning outdoor unit is switched to the air-warming position with the actuating pressure differential of the four-way switching valve (13) being ensured, the four-way switching valve (13) in the normal-functioning outdoor unit is then switched to the air-warming position, and the four-way switching valves (13) are synchronized.

Description

technical field [0001] The present invention relates to an air conditioning system in which a plurality of outdoor units including a compressor, a four-way switching valve, and an outdoor heat exchanger are connected in parallel to a refrigeration cycle. Background technique [0002] In the conventional air-conditioning system, there is provided an air-conditioning system having the following backup operation function: in the case of failure of any one of the compressors in the air-conditioning system in which the outdoor unit is equipped with a plurality of compressors, or In an air-conditioning system in which multiple outdoor units are connected in parallel to the refrigeration cycle of one system, if the compressor of any outdoor unit fails, the normal compressor or the outdoor The unit is turned on to continue the air conditioning operation. [0003] In such an air conditioning system in which multiple outdoor units are connected in parallel, it is necessary to synchro...

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
IPC IPC(8): F25B13/00F24F11/89F25B1/00
CPCF25B1/00F25B13/00F24F11/89F25B49/02F25B2313/0253F25B2313/02741F25B2313/02792F25B2600/2507
Inventor 加藤隆博
Owner MITSUBISHI HEAVY IND THERMAL SYST