CN201202857Y

CN201202857Y - Gas charging and pressure retaining valve of air conditioner inner machine

Info

Publication number: CN201202857Y
Application number: CNU2008200860667U
Authority: CN
Inventors: 潘炎忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-19
Filing date: 2008-04-19
Publication date: 2009-03-04
Anticipated expiration: 2018-04-19

Abstract

Disclosed is an air-conditioner internal unit aeration holding pressure valve which relates to a process device used for the manufacturing and mounting process of the air-conditioner internal unit; a plurality of lug bosses are machined on the left end of a limit sleeve; the number of the lug bosses is the same with the number of the reversing ribs; each lug boss is exactly in opposite to the end part of each reversing rib and maintains proper gap with the inclined plane of each reversing rib; the left end of a valve core is mounted with a reversing wheel; a plurality of support arms which have the same number of the reversing ribs are extended towards the outer diameter direction and arranged on the reversing wheel; the top ends of the support arms are structurally matched with the gaps and imbedded into the gaps to be positioned, so as to enable the valve port to be in the half opening state; the air-conditioner internal unit aeration holding pressure valve is adopted to have all the advantages of the holding pressure valve in the prior art; besides, the matching structure of the reversing ribs and the lug bosses is arranged to enable the valve to have the characteristics of initial valve port half opening, complete closing after once aeration, repeated and continuous aeration; the air-conditioner internal unit aeration holding pressure valve is enabled to satisfy the production process requirement, have high work efficiency and good application effect.

Description

Air-conditioning internal machine inflation pressurize valve

Technical field

The utility model relates to a kind of tooling that is used for air-conditioning internal machine manufacturing and installation process, the inflation pressurize when being used in particular for the air-conditioning internal machine test.

Background technique

Air conditioner needs the sealability of its refrigerant pipe is tested repeatedly in manufacture process.Be in the refrigerant pipe of interior machine, to charge into the nitrogen leak detection earlier, charge into helium leak check and charge into refrigeration agent at last to carry out gas welding and seal leak detection at present to the test mode of the interior machine (indoor set) of split-type air conditioner.If all qualified then product is qualified.In said process, no matter which link finds that gas leakage is arranged, and the release of then need exitting is tested after repairing pipeline again.

Chinese patent (patent No. 200620109038.3) discloses a kind of air-conditioning internal machine inflation pressurize plastic valve, it in the shell of this valve an inner cylinder body, being equipped with in the inner cylinder body can be at the spool that slides along the housing axis direction, be shaped on some grooves that are beneficial to gas communication on the spool, in the inner chamber of the inflation inlet of spool rubber stopper is housed, this rubber stopper and inner cylinder body end form the valve port of unlatching or throttle down; The potential energy that spool also is subjected to a spring applied pressure to have close port.Adopt this valve not only can save working procedures and the tooling device and the equipment of original backwardness, and testing efficiency significantly improves, testing cost is able to remarkable reduction; Also effectively guarantee the healthy of staff, reduced pollution of atmosphere.

Yet the copper pipe that this valve is housed seals when being connected carrying out gas welding with refrigerant pipe, needs the sufficient nitrogen of circulation in the pipeline, produces oxidative phenomena with the inner-walls of duct of avoiding weld; But because the valve port of described valve is in closed condition, make nitrogen to circulate naturally, the raising of workmanship and working efficiency is also had some influences.

The model utility content

The purpose of this utility model is to overcome the problems referred to above that exist in the background technique, and a kind of improvement of air-conditioning internal machine inflation pressure retaining valve is provided, and this device should have the original state valve port to be opened, the characteristics that inflation back valve port is closed; And high working efficiency, using effect is good.

The technological scheme that the utility model proposes is: air-conditioning internal machine inflation pressurize valve, comprise a cylindrical case, be shaped on the internal thread that can be connected in the interface of shell left end with the air-conditioning internal machine refrigerant pipe, a stop collar is fixed at the middle part of shell inner cavity, be shaped on the passage that several are beneficial to the inner chamber inner air flow on the stop collar, other but a spool linear slide is arranged is set on the axis hole at this stop collar center, the spool right-hand member cooperates with the inwall of shell inflation inlet one end form to be opened or the valve port of throttle down, and other has one to be positioned spring energized in the shell inner cavity and to make spool have the potential energy of close port in spool; An orienting cover is also fixed on the left side of stop collar, and the end of orienting cover is provided with plural commutation rib, and the commutation rib is towards an end Bevel of stop collar; The left end of described stop collar is shaped on several boss, and boss quantity is identical with described commutation rib, and each boss all faces the end of commutation rib, and keeps suitable space with the inclined-plane of commutation rib; The left end of described spool is equipped with a reverse wheel again, reverse wheel be provided with stretch out to the outer diameter with commutation rib quantity identical brace, the structure on brace top and described space fit and embedding in this space located, and makes valve port be in semi-open state; The brace top also with the inclined-plane mating reaction of commutation rib, make when spool is subjected to external force effect linear slide, to rotate again, thereby and drive spool on the top of brace under the pressure of spring during from the top landing of boss and move close port.

The angle of the cross section of described inclined-plane and valve is the 30-60 degree.

The sealing plug of plane shape is housed on the described spool, and the sealing plug cooperates the valve port of formation unlatching or throttle down with the tubular port on the outer casing inner wall.

On the described spool conical plug is housed, this conical plug cooperates the valve port of formation unlatching or throttle down with the internal conical surface on the outer casing inner wall.

The axial zone line of described housing exterior also is shaped on respectively around the taking mouthful groove and take a mouthful ridge of external peripheral surface lopping, and the outside of interface one side is shaped on the bolt face that adapts to the spanner interlock application of force.

Cylindrical outside surfaces also can be arranged in the inflation inlet one side outside of described shell, and the outside of interface one side is shaped on the bolt face that adapts to the spanner interlock application of force.

The utility model is finished when dispatching from the factory in manufacturing, adjust by assembling and to make described brace top embed in the space between the inclined-plane of boss and commutation rib, the valve port between maintenance spool and the outer casing inner wall (or and outer casing inner wall on seal ring between valve port) be in semi-open state; Therefore when carrying out gas welding again after the operator is tightened in the utility model on the refrigerant pipe joint of air-conditioning internal machine, the interior nitrogen of refrigerant pipe still can be overflowed from valve port; The operator directly overlaps general inflation connecting sleeve on the inflation inlet that is pressed in this valve and inflates then, spool just is pressed towards and moves left that (slide along commutation rib inclined-plane in the top of reverse wheel brace simultaneously, drive reverse wheel and spool rotational around valve, slip over the side that the inclined-plane moves to the commutation rib until the top of this reverse wheel brace), valve port is opened fully, the body of inflating just can enter the refrigerant pipe of air-conditioning internal machine smoothly, and nitrogen unnecessary in the cavity is discharged.Inflation finishes, the inflation connecting sleeve is removed (extraneous pressure elimination), under the pressure of spring, sliding to the right of spool, and the top of reverse wheel brace can't be returned to original position in the sliding process to the right, but the limit, top of directly passing space and stop collar boss from the side of commutation rib is slipped to the bottom (aliging with the same side of boss in this side of commutation rib) of boss, thereby drive the complete close port of spool.

Adopt the utility model, the whole advantages that not only have original pressure retaining valve, and the structure that matches with boss of set commutation rib inclined-plane, it is semi-open to make this valve have an initial valve port, inflation is once closed fully, and the characteristics of repeated inflation continuously make it meet the requirement of production technology more afterwards, and working efficiency is higher, and using effect is better.

Description of drawings

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

Fig. 2 is the main TV structure schematic representation of Fig. 1 embodiment's shell.

Fig. 3 is the main TV structure schematic representation of Fig. 1 embodiment's spool.

Fig. 4 is the main TV structure schematic representation of the reverse wheel on Fig. 3 spool.

Fig. 5 is the main TV structure schematic representation of Fig. 1 embodiment's orienting cover.

Fig. 6 is the main TV structure schematic representation of Fig. 1 embodiment's stop collar.

Fig. 7 is the utility model embodiment's two main TV structure schematic representation.

Fig. 8 is the main TV structure schematic representation of Fig. 7 embodiment's shell.

Fig. 9 is the main TV structure schematic representation of Fig. 7 embodiment's spool.

Figure 10 is the schematic representation of each working position of the brace end in the utility model.

Figure 11 is the schematic representation of one of external structure of the present utility model.

Figure 12 is two a schematic representation of external structure of the present utility model.

Embodiment

Below in conjunction with Figure of description, technological scheme is described further by embodiment.

This air-conditioning internal machine inflation pressurize valve, comprise a cylindrical case 1, be shaped on the internal thread 1-1 that can be connected in the interface of shell left end with the air-conditioning internal machine refrigerant pipe, a stop collar 5 is fixed at the middle part of shell inner cavity, and (outer peripheral surface of stop collar is shaped on some ribs or groove, to strengthen and the fixedlying connected of shell inner cavity wall portion), be shaped on the passage 5-1 (shown in Figure 6) that several are beneficial to the inner chamber inner air flow on the stop collar, other has a spool 8 slidably to be set on the axis hole (among the figure as can be known: spool is set on the axis hole at this stop collar center by its valve rod) at this stop collar center (along the axis linear slide of shell); The spool right-hand member cooperates with the inwall of shell inflation inlet 9 one ends form to be opened or the valve port of throttle down, and other has one to be positioned spring 6 in the shell inner cavity and to force in spool and make spool have the potential energy of close port; Above structure all with the structure of existing pressure retaining valve roughly the same.

Improvement of the present utility model, be also to fix an orienting cover 3 on the left side of stop collar (outer peripheral surface of orienting cover is shaped on some ribs or groove 3-3, shell inner cavity wall portion then is shaped on groove or the rib that matches, to strengthen the fixedly connected of the two), the end of orienting cover is provided with plural commutation rib 3-1 (after orienting cover is fixed on outer casing inner wall, commutation rib and the substantially parallel layout of the axis of shell), the commutation rib is towards an end Bevel 3-1-1 of stop collar; The left end of described stop collar is shaped on several boss 5-2, and boss quantity is identical with described commutation rib, and each boss all faces the end of commutation rib, and keeps suitable space with the inclined-plane of commutation rib; The left end of described spool is equipped with a reverse wheel 4 again, reverse wheel be provided with stretch out to the outer diameter with commutation rib quantity identical brace 4-1, the structure on brace top and described space fit and embed in this space location (4-1 ' position among Figure 10) make valve port be in semi-open state; The brace top also with the inclined-plane mating reaction of commutation rib, make when spool is subjected to external force effect linear slide, to rotate again, until the side (in Figure 10 4-1 " position) of slippage to the commutation rib; When external force is eliminated (inflation finish back), and the top of brace under the pressure of spring from the top landing of boss (promptly (4-1 ' Figure 10 " position) thus the drive spool moves close port.

The inclination on described inclined-plane can determine as required that generally speaking, the angle of the cross section of inclined-plane and valve is recommended as the 30-60 degree.

Among the embodiment shown in Figure 1: fixing the sealing plug 8-2 of plane shape on the described spool by cartridge cover, the sealing plug cooperates the valve port of formation unlatching or throttle down with the tubular port on the outer casing inner wall.

Among the embodiment shown in Figure 7, conical plug 8-3 is housed on the described spool, this conical plug cooperates the valve port of formation unlatching or throttle down with the internal conical surface on the outer casing inner wall.

Clear for drawing, setting sleeve among Fig. 1, Fig. 7 and reverse wheel do not give to be analysed and observe;

In addition, the axial zone line of the outside of described shell 1 also is shaped on taking mouthful groove 1-3 and taking a mouthful ridge 1-4 around the external peripheral surface lopping respectively, the outside of interface one side is shaped on the bolt face 1-5 (shown in Figure 11) that adapts to spanner (spanner that comprises plum blossom shaped spanner, socket wrench and other structure) the interlock application of force, and these structures all are in order to utilize existing widely used inflation connecting sleeve.With inflation connecting sleeve when inflation, the card pearl on the inflation connecting sleeve embeds when taking mouthful groove, just can inflate by charging air inlet.As another kind of structure, inflation inlet one side of the outside of described shell 1 also can be arranged to tubular profile 1-6 shown in Figure 12, and the outside of interface one side still is shaped on the bolt face 1-5 that adapts to the spanner interlock application of force.

Described seal ring also can adopt other flexible materials except that with the rubber manufacturing, as plastics, polyurethane etc.; Other all parts all can adopt plastics to make.

Claims

1. air-conditioning internal machine is inflated the pressurize valve, comprise a cylindrical case (1), be shaped on the internal thread (1-1) that can be connected in the interface of shell (1) left end with the air-conditioning internal machine refrigerant pipe, a stop collar (5) is fixed at the middle part of shell (1) inner chamber, be shaped on several passages that is beneficial to the inner chamber inner air flow (5-1) on the stop collar (5), other a spool (8) is arranged but linear slide be set on the axis hole at this stop collar center, spool (8) right-hand member cooperates the valve port that forms unlatching or throttle down with the inwall of shell (1) inflation inlet one end, other has a spring (6) that is positioned in shell (1) inner chamber to force in the potential energy that spool (8) makes spool (8) have close port; The left side side that it is characterized in that described stop collar (5) is also fixed an orienting cover (3), and the end of orienting cover (3) is provided with plural commutation rib (3-1), and commutation rib (3-1) is towards an end Bevel of stop collar (5); The left end of described stop collar (5) is shaped on several boss (5-2), boss (5-2) quantity is identical with described commutation rib (3-1), each boss (5-2) all faces the end of commutation rib (3-1), and keeps suitable space with the inclined-plane of commutation rib (3-1); The left end of described spool (8) is equipped with a reverse wheel (4) again, reverse wheel () 4 be provided with stretch out to the outer diameter with commutation rib (3-1) quantity identical brace (4-1), the structure on brace (4-1) top and described space fit and embedding in this space located, and makes valve port be in semi-open state; Brace (4-1) top also with the commutation rib (3-1) the inclined-plane mating reaction, make when spool (8) is subjected to external force effect linear slide, to rotate again; And under the pressure of spring, the top of brace (4-1) drives spool (8) during from the top landing of boss (5-2) thereby moves close port.

2. air-conditioning internal machine inflation pressurize valve according to claim 1 is characterized in that the described inclined-plane (3-1-1) and the angle of the cross section of valve are the 30-60 degree.

3. air-conditioning internal machine inflation pressurize valve according to claim 1 and 2, it is characterized in that being equipped with on the described spool (8) sealing plug (8-2) of plane shape, sealing plug (8-2) cooperates the valve port of formation unlatching or throttle down with the tubular port on shell (1) inwall.

4. air-conditioning internal machine inflation pressurize valve according to claim 1 and 2 is characterized in that being equipped with on the described spool (8) conical plug (8-3), and this conical plug (8-3) cooperates the valve port of formation unlatching or throttle down with the internal conical surface on shell (1) inwall.

5. air-conditioning internal machine inflation pressurize valve according to claim 3, it is characterized in that the outside axial zone line of described shell (1) also is shaped on respectively around the taking a mouthful groove (1-3) and take a mouthful ridge (1-4) of external peripheral surface lopping, the outside of interface one side is shaped on the bolt face that adapts to the spanner interlock application of force.

6. air-conditioning internal machine inflation pressurize valve according to claim 4, it is characterized in that the outside axial zone line of described shell (1) also is shaped on respectively around the taking a mouthful groove (1-3) and take a mouthful ridge (1-4) of external peripheral surface lopping, the outside of interface one side is shaped on the bolt face that adapts to the spanner interlock application of force.

7. air-conditioning internal machine inflation pressurize valve according to claim 3, cylindrical outside surfaces (1-6) also can be arranged in the inflation inlet one side outside that it is characterized in that described shell (1), and the outside of interface one side is shaped on the bolt face (1-5) that adapts to the spanner interlock application of force.

8. air-conditioning internal machine inflation pressurize valve according to claim 4, cylindrical outside surfaces (1-6) also can be arranged in the inflation inlet one side outside that it is characterized in that described shell (1), and the outside of interface one side is shaped on the bolt face (1-5) that adapts to the spanner interlock application of force.