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Control method of multi-split refrigerating and freezing unit and multi-split refrigerating and freezing unit

A control method and refrigeration unit technology, which is applied to the control of one-to-multi-refrigeration and refrigeration units and the field of one-to-multi-refrigeration and refrigeration units, which can solve problems such as failure to meet the cooling needs of indoor units and compressor shutdowns by mistake

Pending Publication Date: 2021-09-10
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, the following situation exists: the indoor temperature corresponding to one indoor unit has not reached the set target temperature. At this time, if two, three or more indoor units stop at the same time, the suction pressure of the compressor will decrease. When the suction pressure drops to the set stop pressure, the compressor will stop by mistake and cannot meet the cooling demand of the indoor unit that is still running

Method used

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  • Control method of multi-split refrigerating and freezing unit and multi-split refrigerating and freezing unit
  • Control method of multi-split refrigerating and freezing unit and multi-split refrigerating and freezing unit
  • Control method of multi-split refrigerating and freezing unit and multi-split refrigerating and freezing unit

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Embodiment Construction

[0046] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0047] In order to solve the technical problem of unintended shutdown of the compressors of the existing one-drag multi-refrigeration and freezing unit, the present invention provides a control method for a one-drag multi-refrigeration and freezing unit. A one-to-multi-refrigeration and freezing unit 1 includes a compressor 111, and the control method includes:

[0048] Obtain the number of start-ups of the indoor units of the multi-refrigeration and freezing unit (step S1);

[0049] Based on the number of start-ups of the indoor unit, the compressor is controlled to enter the anti-misstop mode or the normal stop mode (step S2).

[0050] fi...

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Abstract

The invention relates to a control method of a multi-split refrigerating and freezing unit and the multi-split refrigerating and freezing unit using the control method. The control method comprises the steps that the starting number of indoor units of the multi-split refrigerating and freezing unit is obtained; and based on the starting number of the indoor units, a compressor is controlled to enter a mistaken stop prevention mode or a normal stop mode. According to the method, the compressor is controlled to enter the mistaken stop prevention mode or the normal stop mode based on the starting number of the indoor units, and the situation that the compressor is mistakenly stopped when the refrigeration requirement of the indoor units is not met yet can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a control method of a one-drag multi-refrigeration and freezing unit and a one-drag multi-refrigeration and freezing unit. Background technique [0002] In the process of modern industrial and agricultural production, refrigerating and freezing units can provide effective temperature control, thereby promoting the continuous improvement of production efficiency and product quality. Therefore, they are widely used in many fields such as food processing, machinery manufacturing, pharmaceutical production, and grain storage. Refrigeration-freezing units, including but not limited to water-cooled units and air-cooled units, can directly use refrigerant (also called "refrigerant") to cool cold storage and other occasions in order to provide suitable refrigeration and / or freezing temperatures. Some refrigerated freezers use a vapor compression refrigeration cycle, for example usi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B5/02F25B49/00
CPCF25B5/02F25B49/00
Inventor 孟庆良赵俊东张继通薛天琦宋强
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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