Central air conditioning unit with 0 to 100% output load regulation capability and control method

An air conditioning, central air technology, applied in energy-saving heating/cooling, shielding with air flow, refrigerators, etc., can solve problems such as difficulty in reducing load, frequent startup and impact on the power grid, etc.

Inactive Publication Date: 2019-06-21
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a central air-conditioning unit with 0-100% output load adjustment capability and a control method, so as to

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  • Central air conditioning unit with 0 to 100% output load regulation capability and control method
  • Central air conditioning unit with 0 to 100% output load regulation capability and control method

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0022] figure 1 An embodiment of the central air-conditioning unit with 0-100% output load regulation capacity of the present invention is shown, and the central air-conditioning unit includes a compressor 10 , a condenser 20 , an expansion valve 421 and a shell-and-tube evaporator 30 . The exhaust end of the compressor 10 is connected to the condenser 20 through a first pipeline 41, the condenser 20 is connected to the first refrigerant interface of the shell-and-tube evaporator 30 through a second pipeline 42, and the second refrigerant of the shell-and-tube evaporator 30 The interface is co...

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Abstract

The invention provides a central air conditioning unit with 0 to 100% output load regulation capability and a control method. The central air conditioning unit comprises a compressor, a condenser, anexpansion valve and a shell and tube evaporator. The central air conditioning unit further comprises a heat recovery device. The heat recovery device is located on a first pipeline. A refrigerant connector of the heat recovery device communicates with the first pipeline. A water inlet of the heat recovery device communicates with a water inlet of the shell and tube evaporator through a first heatexchange pipeline. A water outlet of the heat recovery device communicates with a water outlet of the shell and tube evaporator through a second heat exchange pipeline. Through the central air conditioning unit, the actual output load can be adjusted to be 0 to 100% of the rated output load, and the technical problem that a power grid is severely impacted due to frequent starting and stopping of the central air conditioning unit is avoided.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a central air-conditioning unit with 0-100% output load adjustment capability and a control method. Background technique [0002] Due to the characteristics of the screw compressor, the minimum start-up load of a single compressor of a fixed-frequency air-cooled screw chiller is related to the position of the start-up slide valve. Generally, the start-up load is at least 25% of the full load, so that the output capacity of the unit after start-up is 25% of rated capacity. [0003] The air-cooled screw chiller is assembled outdoors, and as the ambient temperature changes, the cooling capacity demand at the end also changes. If the cooling demand at the end is very low, and the unit is still running under a large load, the outlet water temperature of the chilled water system will reach the set water temperature sooner. Once the set water temperature is reached, th...

Claims

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Application Information

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IPC IPC(8): F24F3/00F24F12/00F24F11/89F24F13/30F24F11/83F25B41/00F25B41/40
CPCY02B30/56
Inventor 卓明胜陈培生刘思源
Owner GREE ELECTRIC APPLIANCES INC
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