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Electric valve

An electric valve, valve core technology, applied in the direction of lift valve, valve details, valve device, etc., can solve the problems of reduced rising flow, reduced resolution, insufficient and so on, and achieve the effect of improving controllability

Inactive Publication Date: 2018-03-13
FUJIKOKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But only in such countermeasures, there is a concern that the resolution (especially in the low flow area) will be reduced due to the creation of areas with no flow changes
[0011] In addition, in terms of processing, an angle R is formed at the intersection of the seating surface 14a and the curved surface 14b (upper tapered surface 14ba), and the intersection of the seating surface 14a and the straight portion. , it is necessary to set the outer diameter of the curved surface 14b and the straight portion smaller than the diameter of the narrowest portion 46s of the valve port 46, and as a result, the reduction of the ascending flow rate becomes insufficient. concerns

Method used

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  • Electric valve
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Embodiment Construction

[0066]Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each drawing, the gaps formed between components, the separation distance between components, etc. are sometimes drawn exaggeratedly for the sake of understanding the invention or for the convenience of drawing. In addition, in this specification, descriptions indicating positions and directions such as up and down, left and right, etc. figure 1 The directional arrows are shown as references, and do not refer to the position and direction in the actual use state.

[0067] figure 1 It is a longitudinal sectional view showing one embodiment of the electric valve according to the present invention.

[0068] The electric valve 1 of the illustrated embodiment is an electric valve used for adjusting the refrigerant flow rate in, for example, a heat pump refrigeration and heating system, and mainly includes: a valve shaft 10 having a valve core 14, a guide bus...

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Abstract

An electric valve is provided. A valve opening (46) of a valve main body (40) is provided with a narrowest portion (46s) having a diameter larger than a diameter of a straight portion (14s) of the valve body (14) and an inner diameter of a valve seat (46a) is larger than an inner diameter of the narrowest portion (46s). The electric valve is capable of sufficiently reducing a rising flow rate while simplifying managing of the rising flow rate, and can effectively improve controllability in a low flow rate range.

Description

technical field [0001] The present invention relates to an electric valve comprising a valve main body provided with a valve chamber and a valve port (orifice), and a valve core that controls the flow rate of fluid flowing through the valve port according to the lift amount. Changes, especially related to an electric valve suitable for controlling the flow of refrigerant in heat pump refrigeration and heating systems. Background technique [0002] As such an electric valve, the electric valve described in patent document 1 is known, for example. [0003] Figure 7 The main part of the electric valve of the above-mentioned conventional example is shown. The electric valve 2 of the conventional example shown in the figure is provided with a valve chamber 40a, a valve seat 46a, a valve main body 40 provided with a valve port 46 connected to the valve seat 46a, and the flow through the valve is changed according to the lift amount from the valve seat 46a. The spool 14 of the f...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K1/38F16K1/42
CPCF16K1/00F16K1/38F16K1/42F16K1/34F16K1/54F16K31/0655
Inventor 吉田龙也矢泽将志
Owner FUJIKOKI MFG CO LTD