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Heat pump system, control method and refrigerating unit

A technology of heat pump system and control method, which is applied in the direction of heating and cooling combination, refrigerator, refrigeration components, etc., which can solve problems such as low start-up rate and compressor start-up failure, and achieve the effect of avoiding liquid-filled start-up and improving the start-up success rate

Inactive Publication Date: 2017-02-15
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, when the unit starts up again, when the main valve device is opened, the high and low pressure difference between the compressor inlet and outlet cannot be balanced in a short time, which will cause the compressor to fail to start and the normal start-up rate to be low

Method used

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  • Heat pump system, control method and refrigerating unit

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Embodiment Construction

[0023] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0024] In order to provide a thorough understanding of the present invention, the detailed structure will be set forth in the following description. Obviously, the embodiments of the invention are not limited to specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.

[0025] The invention provides a heat pump system, which includes a conventional refrigerant circulation system and a bypass ...

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Abstract

The invention relates to a heat pump system, a control method and a refrigerating unit. The heat pump system comprises a compressor, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger. The compressor, the outdoor heat exchanger, the first throttling device and the indoor heat exchanger form a refrigerant circulation system. The heat pump system further comprises a bypass pipeline, the two ends of the bypass pipeline are connected with an inlet and an outlet of the compressor separately, and the bypass pipeline is provided with a first switch device used for opening and closing the bypass pipeline. According to the refrigerant circulation system, balance between high pressure and low pressure can be guaranteed before the compressor is started again, and normal starting power is ensured.

Description

technical field [0001] The invention relates to a heat pump system, a control method and a refrigerating unit, in particular to a heat pump system, a control method and a refrigerating unit capable of avoiding the startup of a compressor with liquid in a refrigerating cycle and the failure of the compressor to start normally. Background technique [0002] A refrigeration cycle system composed of a compressor, a condenser, a main valve device, a throttling device and an evaporator connected in sequence is known, and a refrigeration cycle is formed by making refrigerant flow through the above-mentioned components in sequence. In this known refrigerating cycle, in order to ensure stable operation of the compressor in the refrigerating cycle system during normal start-up, it is expected that the pressure between the inlet and outlet of the compressor will be balanced after the compressor is shut down and before the unit is restarted. At present, most of the refrigerating cycle u...

Claims

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Application Information

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IPC IPC(8): F25B29/00F25B41/04F25B41/06F25B49/02F25B41/20F25B41/30
CPCF25B29/003F25B49/022F25B2600/0251F25B2500/26F25B41/20F25B41/37F25B41/30
Inventor 李庆梁爽一顾裕林
Owner GREE ELECTRIC APPLIANCES INC
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