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Four-way valve for switching natural cooling, refrigerating and heating modes

A heating mode, natural cooling technology, applied in multi-way valves, valve devices, engine components, etc., can solve the problems of increasing the workload of overhaul and maintenance, and increasing the complexity of the control system, achieving good control and operation performance, installation and installation. Simple, high operational reliability

Inactive Publication Date: 2011-06-15
TSINGHUA UNIV +1
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  • Application Information

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Problems solved by technology

[0003] For this reason, there are already many air-conditioning processing equipment utilizing natural cooling technology, and CN101514856A has announced "an air processing device with natural cooling and heating function", although the purpose of utilizing natural cooling to reduce air-conditioning energy consumption in transitional seasons has been realized, However, due to the use of multiple electromagnetic or electric valves to switch between the compressor circulation mode and the natural cooling circulation mode, the complexity of the control system increases, thereby increasing the workload of inspection and maintenance in actual operation

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  • Four-way valve for switching natural cooling, refrigerating and heating modes
  • Four-way valve for switching natural cooling, refrigerating and heating modes
  • Four-way valve for switching natural cooling, refrigerating and heating modes

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Embodiment Construction

[0014] The principle structure and working process of the present invention will be described in further detail below with reference to the accompanying drawings.

[0015] figure 1 It is a schematic diagram of the four-way valve used for switching between natural cooling and cooling and heating modes according to the present invention. This figure is a diagram of the position of the valve core when the heat pipe and vapor compression composite refrigeration and air-conditioning unit is in natural circulation. The four-way valve is composed of a first main valve 100, a second main valve 200, a pilot valve 300 and a drive capillary group; the first main valve 100 includes a first main valve housing 101, a compression spring 102, Spool 103, condenser inlet connecting pipe 104, first connecting pipe 105 and second connecting pipe 106; the second main valve 200 includes a second main valve casing 201, a second main valve spool 202, a third connecting pipe Pipe 203, compressor suct...

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Abstract

The invention relates to a four-way valve for switching natural cooling, refrigerating and heating modes, which belongs to the technical field of fluid control valves. The valve comprises a first main valve, a second main valve, a pilot valve and a driving capillary group. The four-way valve can switch the natural cooling, common refrigerating and heat pump heating modes of an air-conditioning unit through the pressure difference changes caused by the on and the off of a refrigerating compressor, the elastic force of a pressure ring as well as the connection and the disconnection of an electromagnetic coil, is much easier than the traditional valve which is controlle with a plurality of valves, has good control and operation performance so that the air-conditioning unit with natural cooling and heating functions has higher reliability, and is characterized by simple installation, convenient maintenance and mass production.

Description

[0001] The invention relates to a four-way valve for natural cooling, cooling and heating mode switching, which is an automatic control valve with four ports, suitable for switching between pipelines under different conditions, especially suitable for The invention relates to switching of working modes of refrigerant direct evaporative air-conditioning equipment with the functions of natural cooling, general refrigeration and heat pump heating, and belongs to the technical field of valve design. Background technique [0002] For the outer area of ​​the existing building, due to the improvement of the performance of the building envelope, the increase in the heat generated by office lighting and equipment, and the fluctuation of the load of building heat transfer and solar radiation, the cooling load of the outer area of ​​the building increases. On the premise of heating in winter and cooling in summer, cooling is sometimes required in the transition season. But at present, bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/10
Inventor 王宝龙周德海郜义军郭忠建石文星李先庭冯喆
Owner TSINGHUA UNIV
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