Switching method for control host in ground source heat pump frequency-conversion multi-online air conditioner system

A multi-connected air conditioner and ground source heat pump technology, which is applied in the direction of heating mode, heating and ventilation control system, heating and ventilation safety system, etc., can solve the problems of reducing the operating efficiency of the air conditioning system, and achieve the effect of improving the level of intelligent control

Inactive Publication Date: 2016-05-18
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] These methods have certain limitations and cannot satisfy the intelligent automatic switching of the system control host. When the designated control host fails, it is necessary

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1, when the number of outdoor units in the ground source heat pump frequency conversion multi-connected air conditioning system is 3, the switching method is as follows:

[0019] Operate the DIP switches in the physical address setting circuit to set the physical addresses of the 4 external machines in the system respectively, and assign the physical addresses of the 3 external machines as: 1, 2, and 3 respectively. The external machine with the default physical address of 1 gets Host control authority, and undertake the task of controlling the host;

[0020] The external machine with a physical address of 1 shares the system parameter information through the RS485 communication circuit; the system parameter information includes the number of external machines, the number of internal machines, the rated power of the system and the physical address of the external machine currently executing the task of controlling the host computer;

[0021] The external unit in...

Embodiment 2

[0026] Example 2, when the number of outdoor units in the ground source heat pump frequency conversion multi-connected air conditioning system is 4, the switching method is as follows:

[0027] Operate the DIP switches in the physical address setting circuit to set the physical addresses of the 4 external units in the system respectively, and assign the physical addresses of the 4 external units as: 1, 2, 3, 4 respectively. The machine obtains the host control authority and undertakes the task of controlling the host;

[0028] The external machine with a physical address of 1 shares the system parameter information through the RS485 communication circuit; the system parameter information includes the number of external machines, the number of internal machines, the rated power of the system and the physical address of the external machine currently executing the task of controlling the host computer;

[0029] The external unit in the system matches its own physical address acc...

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PUM

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Abstract

The invention discloses a switching method for a control host in a ground source heat pump frequency-conversion multi-online air conditioner system. A physical address set circuit, an EEPROM data storage circuit and an RS485 communication circuit of existing hardware are sufficiently utilized, it is intelligently achieved that when an outer unit with the default host control permission breaks down, the control permission is intelligently switched, other outer units temporarily and automatically undertake the task of the control host, and fault information is uploaded. After a project maintenance person finishes maintenance, the control permission is automatically and intelligently returned, and therefore the running efficiency of a control system is guaranteed, and the customer satisfaction is improved.

Description

technical field [0001] The invention relates to the technical field of a ground source heat pump frequency conversion multi-connection air conditioning system, in particular to a method for switching control hosts in a ground source heat pump frequency conversion multi-connection air conditioning system. Background technique [0002] The ground source heat pump frequency conversion multi-connected air-conditioning system is generally designed in a modular manner. There can be a maximum of 4 outdoor hosts, including 1 main outdoor unit and 3 sub-outdoor units. The maximum number of indoor units can reach 64. Generally, the control host is executed by the main outdoor unit. , is responsible for the communication control and operation control of the entire system, so the main outdoor unit occupies a very important unit in the entire control system. Once the main outdoor unit has communication failure or other failures, or just the power supply of the main outdoor unit is cut off...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/62F24F11/63
Inventor 赵寰王应娟操四胜刘运中
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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