Four-way valve, refrigerating system and control method of refrigerating system

A technology of a refrigeration system and a control method, which is applied to the control of refrigeration systems and refrigeration systems, and the field of four-way valves, can solve problems such as difficulty in reversing

Active Publication Date: 2018-05-04
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a four-way valve, a refrigeration system and a control method for the refrigeration system, so as to solve the technical problem of difficult switching caused by liquid accumulation in the four-way valve in the prior art

Method used

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  • Four-way valve, refrigerating system and control method of refrigerating system
  • Four-way valve, refrigerating system and control method of refrigerating system
  • Four-way valve, refrigerating system and control method of refrigerating system

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Embodiment Construction

[0025] 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.

[0026] Such as figure 1 As shown, the four-way valve includes a main four-way valve 10 and a pilot four-way valve 20 , and the pilot four-way valve 20 is connected to the main four-way valve 10 for controlling the direction of flow in the main four-way valve 10 . The main four-way valve 10 includes an input liquid port and three reversing liquid ports, that is, port D in the figure is the input liquid port, and ports C, S and E are three reversing liquid ports. Such as figure 2 As shown, through the pilot four-way valve 20, the connection between port D and port C and the connection between ...

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Abstract

The invention provides a four-way valve, a refrigerating system and a control method of the refrigeration system. The four-way valve comprises a main four-way valve and a pilot four-way valve, whereinthe pilot four-way valve is connected with the main four-way valve, and is used for controlling the flow path direction in the main four-way valve; the main four-way valve comprises an liquid feedingport and three liquid reversing ports; and the four-way valve further comprises a flow path control valve, and the flow path control valve is arranged on a control liquid path where liquid feeding port of the main four-way valve and the pilot four-way valve are connected and is used for controlling connecting and disconnecting of the control liquid path so as to control the amount of the refrigerant entering a control hollow cavity of the main four-way valve through the pilot four-way valve. By applying the technical scheme, the influence of the accumulated liquid in the control hollow cavityon reversing of the main four-way valve can be avoided so that reversing of the four-way valve can be smoother, then normal operation of a unit can be guaranteed, and reversing noise can be reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration systems, in particular to a four-way valve, a refrigeration system and a control method for the refrigeration system. Background technique [0002] The four-way reversing valve is the circulation path of the refrigerant in the switching system on the refrigeration device to change the functions of the two devices of the air conditioner and realize the switching of cooling, heating and defrosting functions. It is the key control valve in the heat pump unit. [0003] For large air-cooled heat pump units, four-way valves with large cooling capacity are used. Four-way valves are used to drive the main four-way valve to change direction through the pilot four-way valve. After the main four-way valve changes direction, there is a high pressure inside the main four-way valve. Cavity, since the four-way valve is installed outdoors, when the ambient temperature is low, the refrigerant in the high-pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B41/04F25B49/02F25B41/20
CPCF25B13/00F25B49/02F25B2500/12F25B2600/25F25B2313/02741F25B41/20
Inventor 程琦姚亮姜佳辉黄凯亮刘思源
Owner GREE ELECTRIC APPLIANCES INC
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