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Valve rod cap of air conditioner service valve

A technology for checking and repairing valves and air conditioners. It is applied in the direction of lifting valves, valve devices, and valve details. It can solve problems such as high cost, impossible to distinguish whether the stop parts are removed, and difficult to determine the stop structural parts.

Inactive Publication Date: 2005-03-09
PARKER HANNIFIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, once service personnel have replaced the service bonnet, it is impossible to tell if the stopper was removed
[0005] Also, in manufacturing, it is always difficult to determine whether each service valve produced contains all stop structural parts without costly and time-consuming visual inspection of each part

Method used

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  • Valve rod cap of air conditioner service valve
  • Valve rod cap of air conditioner service valve
  • Valve rod cap of air conditioner service valve

Examples

Experimental program
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Embodiment Construction

[0015] Air conditioner service valves 10 and 110 are shown in Figures 1, 2A and 2B. Generally, the service valves 10 and 110 include a valve body 12 and a valve stem 14 . A valve stem 14 is received within an interior cavity 16 of the valve body 12 and is supported by threads 18 . Depending on the direction of the threaded connection between the valve stem 14 and the valve body 12, the valve stem 14 is thus movable along the longitudinal axis A-A when it is rotated inwardly or outwardly, clockwise or counterclockwise. The O-ring 20 provides a seal between the top 22 of the valve stem and the inner surface 24 of the valve body.

[0016] The lumen 16 defines at its upper portion 26 an inner diameter D1 that closely corresponds to the outer diameter D2 of the valve stem top 22 . However, as seen in FIG. 1 , the inner diameter of the valve body cavity 16 at the upper portion 26 is generally constant. To prevent the valve stem 14 from moving upwards along the axis A-A beyond the...

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PUM

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Abstract

A service valve (110) and cap assembly (134) is disclosed. The service value comprises a valve stem (14) that is inserted into a valve body (12). An upper portion (26) of the valve body defines a collar (156) selectively formable between a first installation inner diameter (D5) to a second retention inner diameter (D4). A service valve sealing cap (134) includes a base portion (136) and a generally annular sealing portion (138). An annular shoulder (150) is formed on the sealing portion inner diameter, such that the radially inner diameter of the shoulder portion is less than the collar first outer diameter, and is greater than the collar second outer diameter.

Description

technical field [0001] This invention relates to air conditioning service valves, and more particularly to service valve and valve stem cover designs. Background technique [0002] Residential and commercial air conditioning systems include service valves to charge and / or drain refrigerant from the air conditioning system. In this system, the service valve is typically opened and closed by manually adjusting the valve stem inwardly or outwardly within the valve body cavity. Usually the valve stem is placed in the valve body and is threadedly connected to the valve body so that when the valve stem is rotated about its longitudinal axis, the valve stem is oriented inwards or outwards depending on the direction of rotation. The service valve gland engages the outside of the valve body and seals the stem cavity from harmful grit or moisture. [0003] Refrigerant in air conditioning systems can apply high pressure to the valve stem and body. High pressure inside the refrigeran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K13/00F16L55/11F16K27/08F25B41/04F25B45/00
CPCY10T137/0491F16L2201/80Y10T137/6065F16L55/1152Y10T137/6106F16K13/00
Inventor M·G·马丁D·P·克拉夫特T·A·马克瓦德
Owner PARKER HANNIFIN CORP
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