CN201407780Y

CN201407780Y - Visible pressure blank cap in air conditioner

Info

Publication number: CN201407780Y
Application number: CN2009201200226U
Authority: CN
Inventors: 潘炎忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-14
Filing date: 2009-05-14
Publication date: 2010-02-17
Anticipated expiration: 2019-05-14

Abstract

The utility model relates to a blank gap used for the sealing and pressure holding of a freezing pipeline of an air conditioner, and aims to provide the blank gap which can automatically display the gas pressure in the pipeline and has the characteristics of good sealing effect and reliable pressure holding. The technical scheme is as follows: an opening is formed at one end of a cylindrical shellof the visible pressure blank cap in an air conditioner, and a thread matched with a copper connector of the freezing pipeline is formed on the circumferential surface of the opening; a through holecommunicated with an internal chamber of the shell is formed in the center of another end surface of the shell, and an elastic telescopic ring for sensing the pressure change of the internal chamber is also fixed in the internal chamber of the shell, and an air pressure displaying pointer is positioned in the through hole in a sliding manner, and one end of the displaying pointer is connected withthe elastic telescopic ring. The entire edge of the elastic telescopic ring is fastened on a peripheral internal wall of the internal chamber of the shell by a pressing element, and an empty chamberused for the telescopic change of the elastic telescopic ring is arranged between the end surface of the elastic telescopic ring and the end surface of the other end of the shell.

Description

The visual pressure stifle of air-conditioning internal machine

Technical field

The utility model relates to the kit that a kind of air conditioner uses, especially for the stifle of air conditioner refrigeration pipe sealing pressurize.

Background technology

The nut of similar one the one end sealing of the structure of existing air-conditioning internal machine pressurize stifle, utilize and be connected on the copper sleeve of screw thread and refrigeration piping and realize sealing, to keep a spot of inert gas in the refrigeration piping of air-conditioning internal machine, make ducted gas pressure be higher than ambient pressure, avoid air-conditioning to install and use before outside air invade refrigeration piping oxidation inner-walls of duct (this stifle treat just to abandon after the user installs an air-conditioner need not).But, owing to only depend on to be threaded and be difficult to guarantee that each pressurize stifle can both seal reliably with the port of copper sleeve, the device of machine pressure in whole air-conditioning internal machine (comprising the pressurize stifle) do not have again to show can learn just whether the gas pressure in the refrigeration piping is higher than ambient pressure can only turn on stifle when installing an air-conditioner after; This has brought difficulty with regard to the quality control of giving production firm, also brings uncertain factor to production technology.

The utility model content

The purpose of this utility model is to overcome the problems referred to above that exist in the background technology, and a kind of improvement of air conditioner pressurize stifle is provided, and this stifle is the gas pressure in the display pipes automatically, and has good sealing effect, pressurize reliable characteristics.

The technical scheme that the utility model proposes is: the visual pressure stifle of air-conditioning internal machine, and an end of its cylindrical case is shaped on opening, is shaped on the screw thread that matches with the refrigeration piping copper sleeve on the inner peripheral surface of opening; The central authorities that it is characterized in that the other end end face of shell are shaped on a through hole that communicates with shell inner cavity, also fix one in the shell inner cavity and be used for the elastic telescopic circle that the perception chamber pressure changes, other has an air pressure that is positioned at slidably in the described through hole to show pin, this end that shows pin is connected with described elastic telescopic circle, slides in described through hole with the motion of following the elastic telescopic circle.

The whole edge of described elastic telescopic circle is fastened on the inner circumferential wall of shell inner cavity by a clamping element; Be provided with the cavity that can carry out telescopic variation between the other end end face of the end face of elastic telescopic circle and described shell for the elasticity expanding ring.

The other end end face inboard of described shell is the plane, and the end face of elastic telescopic circle is to the outstanding concave surface of opening direction, forms the cavity that can carry out telescopic variation for elasticity expanding ring end face between the two.

The other end end face inboard of described shell is the outstanding concave surface of opening direction dorsad, and the end face of elastic telescopic circle then is the plane, forms the cavity that can carry out telescopic variation for elasticity expanding ring end face between the two.

Use principle of the present utility model is: because stifle is provided with the cavity that can carry out stretching motion for the elasticity expanding ring, so the elastic telescopic circle carries out in various degree telescopic variation according to the gas pressure difference in the refrigeration piping of being experienced, and then drive air pressure show that pin moves in the stifle through hole; As long as operating personnel see air pressure and show that needle end part stretches out through hole, just know that manifold pressure is greater than extraneous and then adhere to specification; If air pressure shows in the needle end part withdrawal through hole that show that then manifold pressure reduces, operating personnel need draw attention, notice whether pipeline has the possibility of leakage.

The beneficial effects of the utility model are: owing to be provided with the directly display unit of the interior gas pressure of perception refrigeration piping on the stifle, this brings very big facility with regard to accurately judge the refrigeration piping operating mode to operating personnel, and very helps controllable quality; In addition, this stifle still can be realized sealing to air-conditioning internal machine, has good sealing effect, pressurize reliable characteristics.

Description of drawings

Fig. 1 is the main TV structure schematic diagram of one of the utility model embodiment.

Fig. 2 is the external structure schematic diagram of Fig. 1 embodiment.

Fig. 3 is the correlation schematic diagram of each parts in Fig. 1 stifle.

Fig. 4 is two the main TV structure schematic diagram of the utility model embodiment.

Fig. 5 is the external structure schematic diagram of Fig. 4 embodiment.

Fig. 6 is the correlation schematic diagram of each parts in Fig. 4 stifle.

The specific embodiment

The air-conditioning internal machine stifle, the outside of its cylindrical case 2 is shaped on the hexagon that is beneficial to the spanner effect, and an end of shell is shaped on opening 2-2, is shaped on the screw thread that matches with the refrigeration piping copper sleeve on the inner peripheral surface of opening; This is the conventional structure of general stifle.

Among the utility model embodiment 1,2, central authorities at the other end end face of shell 2 are shaped on a through hole that communicates with shell inner cavity, also fix one in the shell inner cavity respectively and be used for the elastic telescopic circle 3 that the perception chamber pressure changes, other has an air pressure that is positioned at slidably in the described through hole to show pin 4, one end of this demonstration pin is connected with described elastic telescopic circle and (is the tight fit jack 3-1 and the jack 10-1 that insert the elastic telescopic circle respectively as can be known among Fig. 3, Fig. 6, slides in described through hole with the motion of following the elastic telescopic circle.

The whole edge of elastic telescopic circle be fastened on by a compacting part (clamping sleeve 1 or compacting ring 8) on the inner circumferential wall of shell inner cavity (another sealing ring 6 again roof pressure on the right side of clamping sleeve or compacting ring; When stifle screwed in the copper sleeve of refrigeration piping, sealing ring 6 just was subjected to the roof pressure of copper sleeve, made that fixing of elastic telescopic circle is more firm); Be provided with the cavity that can carry out telescopic variation between the other end end face of elastic telescopic circle other end end face and described cylindrical outer casing for the elasticity expanding ring.

The difference of embodiment 1, embodiment 2 only is the cavity structure that can carry out telescopic variation for the elasticity expanding ring.Among the embodiment 1, the other end end face inboard of described shell 2 is that the end face of elastic telescopic circle 3 then is the plane to the concave surface 2-1 of outside outstanding (outstanding left), forms the cavity 5 that can carry out telescopic variation for elasticity expanding ring end face between the two; And in embodiment 2, the other end end face 9-1 of described shell 9 inboard is the plane, and the end face of elastic telescopic circle is the concave surface to opening direction outstanding (outstanding to the right), forms the cavity 11 that can carry out telescopic variation for elasticity expanding ring end face between the two.

Described sealing ring is recommended to make with rubber; Shell generally adopts plastics or metal manufacturing.

Claims

1, the visual pressure stifle of air-conditioning internal machine, an end of its cylindrical case (2,9) is shaped on opening (2-2), is shaped on the screw thread that matches with the refrigeration piping copper sleeve on the inner peripheral surface of opening; The central authorities that it is characterized in that the other end end face of shell are shaped on a through hole that communicates with shell inner cavity, also fix one in the shell inner cavity and be used for the elastic telescopic circle (3 that the perception chamber pressure changes, 10), other has an air pressure that is positioned at slidably in the described through hole to show pin (4), and this end that shows pin is connected with described elastic telescopic circle.

2, the visual pressure stifle of air-conditioning internal machine according to claim 1 is characterized in that the whole edge of described elastic telescopic circle is fastened on the inner circumferential wall of shell inner cavity by a clamping element (1,8); Be provided with the cavity that can carry out telescopic variation between the other end end face of the end face of elastic telescopic circle and described shell for the elasticity expanding ring.

3, the visual pressure stifle of air-conditioning internal machine according to claim 2, the other end end face inboard that it is characterized in that described shell is the plane, the end face of elastic telescopic circle is to the outstanding concave surface of opening direction, forms the cavity (11) that can carry out telescopic variation for elasticity expanding ring end face between the two.

4, the visual pressure stifle of air-conditioning internal machine according to claim 2, it is characterized in that the other end end face of described shell is inboard is the outstanding concave surface of opening direction dorsad, the end face of elastic telescopic circle then is the plane, forms the cavity (5) that can carry out telescopic variation for elasticity expanding ring end face between the two.