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Single two-way throttling capillary tube

A two-way throttling, capillary technology, applied in the direction of fluid circulation arrangement, refrigeration components, refrigerators, etc., can solve the problems of increasing the noise of the one-way valve of the welding joint and increasing the cost of materials, so as to reduce the hidden danger of leakage, reduce the welding joint, avoid the The effect of vibration noise

Inactive Publication Date: 2010-03-31
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem with this structure is that a one-way valve is added to the throttling system, which not only increases the cost of materials, but also increases the possibility of welding joint leakage and noise generated by the one-way valve.

Method used

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  • Single two-way throttling capillary tube
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  • Single two-way throttling capillary tube

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Experimental program
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Effect test

Embodiment approach 1

[0015] Such as figure 2 Shown, it is a kind of monomer two-way throttling capillary tube, the feature of the present invention is: comprise the capillary tube 4,5 of two section different tube inner diameters, two capillary tubes communicate with each other, the entrance A of capillary tube 4 with big tube inner diameter is for cooling when cooling The inlet of the refrigerant, the inlet C of the small capillary tube 5 is the inlet of the refrigerant during heating. It can also be capillary tubes with two or more sections of different inner diameters. Two adjacent capillary tubes are connected to each other to form a single capillary tube. When the refrigeration system is cooling, the refrigerant enters from the inlet A end with small resistance, and when heating, the refrigerant enters from the inlet C end with large resistance. Enter.

[0016] When in use, the single bidirectional throttling capillary is composed of a capillary 4 with a larger inner diameter and a capillar...

Embodiment approach 2

[0020] Such as image 3 As shown, the feature of a single bidirectional throttling capillary is that it includes three sections of capillaries 6, 7, and 8 with different inner diameters. The inner diameters of the capillaries 6 and 8 on both sides are different, and the lengths of the capillaries 6 and 8 on both sides are different. The inlet A of the long capillary 6 is the inlet of the refrigerant during cooling, and the inlet D of the short capillary 8 is the inlet of the refrigerant during heating.

[0021] When in use, when performing refrigeration operation, the refrigerant enters from the inlet A end of the long capillary tube 6, because the refrigerant in this section is in a liquid phase and a low dryness state, the flow rate is low, and the throttling pressure drops slowly. After being throttled by capillary tube 7 in the middle section, the dryness of refrigerant increases and the flow speed increases. It enters section 8 of capillary tube with short length and con...

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Abstract

The invention relates to a single two-way throttling capillary tube, which is characterized in that: the capillary tube comprises more than two capillary tubes with different tube inner diameters; twoadjacent capillary tubes are mutually communicated to form a single capillary tube; a refrigerant enters from an inlet A with low resistance when a refrigeration system refrigerates; and the refrigerant enters from an inlet C with high resistance during heating. The single two-way throttling capillary tube has the advantages of avoiding the use of a one-way valve, reducing production cost, reducing welded junctions, reducing hidden danger of leakage and completely avoiding vibration noise generated by the one-way valve.

Description

technical field [0001] The invention relates to a single-body two-way throttling capillary, in particular to a single-body two-way throttling capillary in an air-conditioning and refrigeration system performing cooling and heating operations. Background technique [0002] Refrigeration equipment such as cooling and heating dual-purpose air conditioners, when performing cooling and heating operations, the throttling pressure difference requirements under the two operating modes are different. At present, the relationship between the capillary throttling pressure difference and the length is mainly used to make the refrigerant This is achieved by varying the length of the capillary that flows through the cooling and heating operation. Usually used in the design figure 1 Structure. When cooling operation, the refrigerant enters from the A end of the capillary tube 1 and flows out directly through the E end of the one-way valve 2 after being throttled by the capillary tube. D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06
Inventor 邹时智陈粟宋徐言生罗恒杨小东
Owner SHUNDE POLYTECHNIC
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