Core iron assembly and four-way reversing valve applying core iron assembly

Abstract

The invention discloses a core iron assembly for a four-way reversing valve. The core iron assembly comprises a dragging frame (1), a core iron (2) and a reed (3), wherein the core iron (2) is made of a metal material, the dragging frame (1) is made of a non-metal material, and the reed (3) is fixed on the dragging frame (1) by heating and deforming the dragging frame (1). By adopting the structure and due to the fact that the dragging frame (1) is made of the non-metal material, the core iron assembly has lighter mass compared with the dragging frame made of the metal material in the prior art, the production cost is reduced, and the energy consumption is reduced. The invention further provides a four-way reversing valve including the core iron assembly.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to a core iron assembly of a four-way reversing valve used in the above-mentioned equipment. In addition, the present invention also relates to a four-way reversing valve using the core iron assembly. Background technique [0002] In air-conditioning equipment, the four-way reversing valve is a product used to switch flow channels in the refrigerant circuit composed of compressors, condensers, indoor heat exchangers and outdoor heat exchangers. [0003] Please refer to figure 1 and figure 2 , figure 1 It is a structural schematic diagram of a four-way reversing valve in the prior art; figure 2 for figure 1 Partial enlarged view of the pilot valve in ; Figure 3-Figure 5 for figure 2 Front view, top view and left view of the drag frame in ; Figure 6 , Figure 7 respectively figure 2 Schematic diagram of the structure of the core iron and reed; Figu...

AI Technical Summary

Problems solved by technology

[0007] However, the core iron assembly composed of the drag frame 21 ′, reed 23 ′ and core iron 22 ′, all of which are made of metal materials, has a relatively large quality, high cost, and relatively large energy consumption.

In addition, if Figure 9 As shown, the figure is Figure 8 The right sectional view of the connection between the first cavity 221' and the first end 211', since the first end 211' of the drag frame 21' is a cuboid, the drag frame 21' and the core iron 22' The area of ​​the contact surface is relatively small, and the two only form a surface contact on both sides of the end surface of the first end portion 211′ which is greater than the diameter of the central hole at the bottom of the first cavity (as shown by the grid filling line); and the first end portion 211 The surrounding wall of ' only forms a line contact with the first cavity 221', so the firmness of the two is poor after cooperation, and the support of the first end 211' by the first cavity 221' is unstable, resulting in the four-way reversing valve. Under the working conditions of high temperature and high pressure, the drag frame 21' is often loose, which makes the product invalid

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