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Electronic expansion valve and air-conditioning refrigeration system thereof

An electronic expansion valve and valve port technology, which is applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of squealing sound and poor comfort of the valve body, and achieve the effect of improving comfort

Pending Publication Date: 2019-12-24
ZHEJIANG DUNAN HETIAN METAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing electronic expansion valve, when the refrigerant flows from the B port to the A port, the refrigerant tends to accumulate in the guide sleeve, thereby causing squealing noises in the valve body and poor comfort.

Method used

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  • Electronic expansion valve and air-conditioning refrigeration system thereof
  • Electronic expansion valve and air-conditioning refrigeration system thereof
  • Electronic expansion valve and air-conditioning refrigeration system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Example 1: The diameter of the valve port D=2.0mm, the flow volume at the valve port V=9.0m 3 / h, the aperture d of the distribution hole is respectively taken as: 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, after testing, wait until the following data table.

[0062]

[0063] It can be seen from the above table that when the flow volume at the valve port V=9.0m 3 / h, the diameter of the valve port D=2.0mm; when the diameter d of the distribution hole is between 2.7mm-3.2mm, the refrigerant flowing from port A to port B is evenly distributed, and can achieve the purpose of throttling and pressure reduction; The flow from port B to port A is fluid sound.

Embodiment 2

[0064] Example 2: The diameter of the valve port D = 2.2mm, the flow volume at the valve port V = 11.0m 3 / h, the distribution holes are respectively taken: 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, after testing, wait until the following data table.

[0065]

[0066]It can be seen from the above table that when the flow volume at the valve port V=11.0m 3 / h, the diameter of the valve port D=2.2mm; when the diameter d of the distribution hole is between 2.7mm-3.2mm, the refrigerant flowing from port A to port B is evenly distributed, and can achieve the purpose of throttling and reducing pressure; The flow from port B to port A is fluid sound.

Embodiment 3

[0067] Embodiment 3: The caliber of the valve port D=2.4mm, the flow volume V at the valve port=13.0m 3 / h, the distribution holes are respectively taken: 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, after testing, wait until the following data table.

[0068]

[0069] It can be seen from the above table that when the flow volume at the valve port V=13.0m 3 / h, the diameter of the valve port D=2.4mm; when the diameter d of the distribution hole is in the range of 2.7mm-3.2mm, the refrigerant flowing from port A to port B is evenly distributed, and can achieve the purpose of throttling and pressure reduction; The flow from port B to port A is fluid sound.

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PUM

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Abstract

The invention relates to the technical field of air-conditioning refrigeration, in particular to an electronic expansion valve and an air-conditioning refrigeration system thereof. The electronic expansion valve comprises a valve body, a valve core seat, a valve needle assembly and a guiding sleeve, a first medium opening and a valve cavity are formed in the valve body and communicate with each other, the valve core seat is arranged in the valve cavity, and a valve opening and a second medium opening are formed in the valve core seat; the guiding sleeve is mounted on the valve core seat, and the valve needle assembly is arranged in the guiding sleeve and controls opening or closing of the valve opening under guiding of the guiding sleeve, so that the first medium opening and the second medium opening communicate with each other or are closed; and the aperture of the valve opening is set to be D, D is no less than 2.0 mm and no greater than 3.2 mm, the volume flow of a refrigerant at the valve opening is set to be V, V is no less than 9m3 / h and no greater than 22m3 / h, the diameter of a distribution hole is set to be d, and d is no less than 2.7 mm and no greater than 3.2 mm. The invention further provides the air-conditioning refrigeration system.

Description

technical field [0001] The invention relates to the technical field of air conditioning and refrigeration, in particular to an electronic expansion valve and an air conditioning and refrigeration system thereof. Background technique [0002] In air-conditioning and refrigeration systems, electronic expansion valves are mainly used for throttling and reducing pressure and regulating flow. The existing electronic expansion valve includes components such as a valve body, a housing, a guide sleeve, a valve stem assembly, a screw assembly, and a driving mechanism. The shell is installed on the valve body, and the valve body is provided with a medium inlet (A port), a valve port and a medium outlet (B port), the screw assembly and the guide sleeve are installed on the valve body; the valve stem assembly is installed in the guide sleeve, And under the action of the driving mechanism, it moves along the guide sleeve to open or close the valve port, so as to control the conduction o...

Claims

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Application Information

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IPC IPC(8): F16K31/06F16K31/124F25B41/06F25B41/34
CPCF16K31/06F16K31/124F16K31/1221F25B41/31Y02B30/70
Inventor 陈锋赵俊
Owner ZHEJIANG DUNAN HETIAN METAL CO LTD
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