Expansion valve

An expansion valve, hollow technology, applied in the field of expansion valves, can solve the problems of expansion valve manufacturing cost, etc., and achieve the effect of sufficient pressure balance and compact structure

Active Publication Date: 2021-06-04
ECO HLDG 1 GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] A further disadvantage of the known expansion valves is that they are expensive to manufacture

Method used

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  • Expansion valve
  • Expansion valve
  • Expansion valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0223] figure 1 An exemplary embodiment is shown in longitudinal section of an expansion valve 1 according to the invention. For illustrative purposes in figure 1 Define top side 2 and bottom side 3 in . The upper side 2 and the lower side 3 are also used to illustrate the individual components, respectively, in the figure 1 The general arrangement of these components can be seen in .

[0224] The expansion valve 1 has a valve base body 5 and a housing 4 . exist figure 1 shows the expansion valve 1 in a state installed in the valve installation space 43 . The valve installation space 43 is generally understood to be a cavity in which the expansion valve 1 is installed or is to be installed.

[0225] Since the valve base body 5 is a one-piece body, it can therefore be plugged into the valve installation space 43 in the form of a bullet. Accordingly, the entire expansion valve 1 can be easily installed in the valve installation space 43 and can be easily disassembled.

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Abstract

The invention relates to an expansion valve (1) which can be operated by means of a stepping motor. The expansion valve comprises a housing (4); a hollow handle (7) arranged in the housing (4); a valve base body (5) supporting the closed housing (4) of the hollow handle (7); a rotor (6) which can be driven by means of the stator; a central spindle (8), which is arranged inside the hollow handle (7) and can be driven by the rotor (6) such that a rotational movement of the spindle (8) can be converted into an axial movement by means of a threaded connection in order to open and close the expansion valve (1); and a spiral body (12) having a screw pitch (16), which is arranged around an outer cover (10) of the hollow shaft (7) and can be driven by means of the rotor (6), wherein a stop body is arranged on the hollow shaft (7), is arranged movably in the screw pitch (16) of the spiral body (12) and gives an upper end position and a lower end position of the central spindle (8) as a component of a spindle stop structure.

Description

technical field [0001] The invention relates to an expansion valve. Background technique [0002] An expansion valve, also known as a throttle valve, is generally a device that reduces the pressure of the fluid flowing through it by means of a locally constricted flow cross-section and thus increases or expands the volume. Typically expansion valves have a mechanism that converts rotational motion into axial motion to open and close the expansion valve. For the axial movement for opening and closing the expansion valve, it is necessary to limit or define two end points by means of stop structures. [0003] Such expansion valves are sufficiently known in the prior art. A stop arrangement for motorized valves is known, for example, from JP 3328530 B2. The degree of opening of the valve seat is controlled in the valve body by electrifying the stator of the motor to turn the rotor of the motor. The stator is fastened to the outer peripheral surface of the housing. The rotat...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16K1/02F16K1/32F16K1/48F16K31/04F16K31/50
CPCF16K1/02F16K1/32F16K1/48F16K31/047F16K31/508F25B41/35Y02B30/70F16K31/50F16K31/04F16K27/029F16K15/025F16K25/005F25B2341/06F16K1/36F16K31/046
Inventor斯文·德尔曼阿德里安·埃斯拉瓦·奥拉德雷丹尼尔·赖曼托尼·施奈德
OwnerECO HLDG 1 GMBH