Reversing valve and dragging frame component thereof

Abstract

The invention discloses a dragging frame component for a reversing valve, which comprises a plate-shaped dragging frame body, wherein a side of the dragging frame body in the width direction is clamped in a connecting hole of a core iron of the reversing valve; and the dragging frame body and the core iron are fixed by compressing the end part of the core iron. The dragging frame component is characterized in that: a butting part for positioning is arranged on the dragging frame body; besides, the dragging frame body and the core iron are compressed and fixed, and the side or bottom of the dragging frame body in the width direction and the connecting hole of the core iron are positioned, so that the area of contact part of the primary dragging frame component and the core iron is increased, when the dragging frame body tends to be loose, the contacting part of the butting part and the hole wall of the connecting hole can stop loosing and tilting of the dragging frame body, so that the compression soundness and high-temperature high-pressure resistance of the dragging frame component and the core iron are improved, and the working stability of the reversing valve is further improved.

Description

technical field [0001] The invention relates to the field of heat pump air-conditioning and refrigeration systems, in particular to a drag frame assembly used for a reversing valve. The present invention also relates to a reversing valve comprising the above drag frame 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 the four-way reversing valve as an example to briefly introduce the cooling and heating conve...

AI Technical Summary

Problems solved by technology

It can be seen from the above working process that the drag frame 132 is located at the intersection of high and low pressure switching, and is constantly impacted by the high-pressure refrigerant and high temperature. Due to the impact of the high-pressure refrigerant and the linear deformation of the drag frame 132 and the core iron 134 The difference between the drag frame 132 and the core iron 134 leads to loosening of the crimping part, which may lead to failure of individual products in severe cases

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