CN202946742U

CN202946742U - Electric control valve

Info

Publication number: CN202946742U
Application number: CN 201220677582
Authority: CN
Inventors: 班润梅; 韩厚义; 崔锦
Original assignee: Taiyuan Aero Instruments Co Ltd
Current assignee: Taiyuan Aero Instruments Co Ltd
Priority date: 2012-12-11
Filing date: 2012-12-11
Publication date: 2013-05-22
Anticipated expiration: 2022-12-11

Abstract

The utility model relates to an automotive air-conditioning compressor and a related automotive air-conditioning system, and the field of mechanical manufacturing, and in particular relates to an electric control valve. The electric control valve comprises a coil assembly, a shell, a jacket, armatures, iron cores, a valve rod, a valve body, a vacuum bellows assembly, a magnetizer, a cap and a sealing ring, wherein the sealing way of the valve rod and the valve body is the sealing of a valve rod cone and a valve body hole, and the iron core is step-shaped. The electric control valve meets the function stability requirement, and lowers the requirement on manufacturing accuracy so as to lower the production cost, simplify the product assembly and improve the production efficiency.

Description

Motor-operated control valve

Technical field

The utility model patent relates to automobile air conditioner compressor and related automotive air-conditioning system, and mechanical manufacturing field, is specially motor-operated control valve.

Background technique

Existing automobile air conditioner compressor motor-operated control valve, valve port sealing structure adopts plane sealing, is specially valve rod end face plane and valve body aperture plane sealing, and this encapsulating method is high especially to the requirement of sealed department bit plane degree and surface roughness, machining accuracy is high, causes cost greatly to improve; Iron core with the gap structure such as all adopt coordinating of sheath, iron core and valve rod, make the matching gap of armature and sheath very little, have with housing, valve body and sheath due to iron core and coordinate, armature and valve rod riveted joint, valve rod is elongate rod again, very easily causes the armature clamping stagnation after assembling, assembly qualified rate is very low, this structure not only requires machining accuracy very high, and is also very high to the assembly precision requirement, is unfavorable for batch production.

Summary of the invention

Technical problem to be solved in the utility model is how to reduce difficulty of processing and the precision of motor-operated control valve.

The technological scheme that the utility model adopts is: motor-operated control valve, comprise coil block, housing, sheath, armature, iron core, valve rod, valve body, vacuum corrugated pipe assembly, magnet case, cap, seal ring, described valve rod and valve seal mode are the valve rod conical surface and valve body hole sealing, and described iron core is step-like.

The beneficial effects of the utility model are:1, improve the sealing surface shape, changed conical surface seal into by plane sealing, reduced machining accuracy.2, it is step-like by iron core is changed into, under the condition that totally magnetic air gap is constant, redistributed magnetic air gap, namely strengthened the gap one between armature and sheath, reduced the gap two of housing and armature residual gap, guaranteed simultaneously reliable contact the after iron core and housing assembling, make non-working-gap accomplish minimum, so just greatly reduce the requirement to assembly precision, by iron core being changed into the step-like valve rod positioning structure that changed, the utility model is that step hole and valve body hole are located jointly, reduced the requirement to difficulty of processing and precision, improved the working efficiency of production and processing and assembling.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Wherein:

1, coil block, 2, housing, 3, sheath, 4, valve body, 5, valve rod, 6, the vacuum corrugated pipe assembly, 7, cap, 8, seal ring, 9, iron core, 10, armature, 11, magnet case, 20, the valve rod conical surface, 30, valve body hole.

Embodiment

The utility model is described in further detail below in conjunction with specific embodiment and Figure of description.Specific embodiment described herein is only in order to explaining the utility model, and is not used in restriction the utility model.

Specific embodiment:

As shown in Figure 1: motor-operated control valve is comprised of coil block, housing, sheath, armature, iron core, valve rod, valve body, vacuum corrugated pipe assembly, magnet case, cap, seal ring etc., and sheath and housing are welded as frame set, and sheath is the thin-walled tensioning member; Armature and valve rod are riveted together, and become valve rod assembly, and valve rod is elongate rod, and length and diameter ratio are about; Iron core and valve body are fitted in and are together valve component; Valve component is together with frame set is fitted in; Armature band ovable valve stem moves in the passage that sheath, iron core and valve body form.

Valve rod and valve seal mode are the valve rod conical surface and valve body hole sealing, and iron core is step-like, has increased the air gap between armature and magnet case, reduced the air gap between iron core and housing, redistributed air gap, the iron core through hole is orientated local positioning as, and the iron core hole is step hole, wherein the localization part hole length is short, diameter is little, and precision is high, and matching gap is little, non-localization part bore dia is large, and precision is low.

The trim designs of product is simplified and improved to this motor-operated control valve, reduced the requirement of product to machining accuracy, reduced cost of production, improved the working efficiency of production and processing and assembling; Improvement by to sealing surface structure namely changes plane sealing into conical surface seal; By the adjustment to magnetic air gap, iron core is changed into step-like, namely increase and armature between air gap, reduce and iron core between air gap, improved simultaneously position structure, namely locate jointly for part (short) and valve body flexible location, hole (length); Above-mentioned improvement originally needed the part of highi degree of accuracy processing and highi degree of accuracy assembling all based on the optimization to machining accuracy, adopted now conventional machining technique and conventional assembly method can reach requirement, and producing for criticizing of electrically-controlled valve provides precondition.

In sum, the change of motor-operated control valve has been combined with larger lifting to machinery in design, has satisfied the stability requirement of function, and has reduced the requirement to accuracy of manufacturing, thereby has reduced cost of production, has simplified the assembling of product, has improved manufacturing efficiency.

Claims

1. motor-operated control valve, comprise coil block, housing, sheath, armature, iron core, valve rod, valve body, vacuum corrugated pipe assembly, magnet case, cap, seal ring, it is characterized in that: described valve rod and valve seal mode are the valve rod conical surface and valve body hole sealing, and described iron core is step-like.