Reversing valve and core steel assembly thereof

Abstract

The invention discloses a core steel assembly for a reversing valve. The core steel assembly comprises a core steel body and a dragging frame, wherein the core steel body is provided with a connecting hole; the dragging frame is in a plate shape generally and the side of the dragging frame in the width direction is sleeved in the connecting hole; the core steel body and the dragging frame are fixed in a compression joint mode; and besides the fixing in the compression joint mode between the core steel body and the dragging frame, and the positioning of the side of the dragging frame in the bottom direction and the width direction and the connecting hole of the core steel body, a positioning structure is also arranged between the connecting hole of the core steel body and the corresponding side part or bottom of the dragging part. Thus impact is generated by a high-temperature high-pressure medium in a system to the connecting part of the dragging part and the core steel body, and when linear deformation is caused, the looseness of the connecting part of the dragging frame and the core steel body can be avoided by a positioning component, thus the high-temperature resistance and high-pressure resistance of the core steel assembly are improved, and the working reliability of the system applying the core steel assembly is improved further. The invention also discloses a reversing valve comprising the core steel assembly.

Description

technical field [0001] The invention relates to the field of heat pump air-conditioning and refrigeration systems, in particular to a core iron assembly for a reversing valve, that is, a core iron assembly in which a core iron body and a drag frame assembly are assembled together. The present invention also relates to a reversing valve comprising the core iron assembly. Background technique [0002] With the rapid development of my country's economic construction, the air-conditioning industry continues to develop in the direction of diversification and multi-function, and the multi-purpose heat pump air-conditioning system has been more and more widely developed and applied. [0003] In the heat pump air-conditioning system, the cooling or heating of the air-conditioning system is generally adjusted by changing the flow direction of the cooling medium, and the change of the flow direction of the cooling medium needs to be realized by a reversing valve. The following takes ...

AI Technical Summary

Problems solved by technology

Through the above working process, it can be seen that the drag frame is located at the intersection of high and low pressure conversion, and is always affected by the impact of high-pressure refrigerant and high temperature. Due to the impact of high-pressure refrigerant and the difference in linear deformation between the drag frame and the core iron , leading to loosening of the crimping part between the drag frame and the core iron, which leads to a change in the fixed position relationship between the two and affects product performance. In severe cases, individual products may fail

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