CN2654986Y

CN2654986Y - Inflatable pressure-keeping plastic valve for indoor unit of air conditioner

Info

Publication number: CN2654986Y
Application number: CN 200320109072
Authority: CN
Inventors: 潘炎忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-21
Filing date: 2003-10-21
Publication date: 2004-11-10
Anticipated expiration: 2013-10-21

Abstract

The utility model relates to a process part used in the manufacturing and installation of air conditioning machines to solve the technical problems in the prior arts by providing an aeration and dwell work piece for air conditioning machines. The work piece has the advantages of high efficiency, excellent practicality, low cost and environment friendliness. The technical proposal to solve the problems in the prior art is that a shell is arranged outside the valve; an internal thread and an anti-collision lip are arranged respectively at the two axial ends of the shell; an inverted conical surface and an internal cylinder are arranged between the internal thread and the anti-collision lip; a spool that can slide along the axial direction of the shell is arranged in the internal cylinder; a plurality of grooves that facilitates the flow of the gas are arranged on the spool; a rubber piston matched with the inverted conical surface and an end of a spring are arranged at the two axial ends of the spool respectively; an end of the spring is fixed by the spring seat, which is fixed on the internal cylinder and provided with pores; and a top stem is arranged at the end of the rubber piston.

Description

A kind of air-conditioning internal machine inflation pressurize plastic valve

Technical field

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

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.

Factory's extensive mode that adopts when hunting leak is at present: elder generation makes horn mouth to a port of one section copper pipe, and this horn mouth is aimed at interior machine-processed cold pipe coupling, with copper nut horn mouth is tightened on the interior machine joint to be sealed again; Then charge into test gas to authorized pressure from the another port of this section copper pipe and hunt leak with the special-purpose connector of inflating; When hunting leak with refrigeration agent at last, need to flatten this section copper pipe with Sealing pliers earlier, and seal with gas welding.

Adopt this mode to test, operational sequence complexity not only, operator and special tool are various, and working efficiency is not high; And each test all will consume one section 10 copper pipe to 15 centimeter length (after sealing can't reuse) and a copper nut, and some interior machine is repeatedly repaired test and then need be consumed many sections copper pipes, a plurality of copper nut and refrigeration agent, and consumptive material is more, and cost is difficult to reduction.In addition, when using gas welding to seal, the fracture end leaks and residual refrigeration agent is met the heat volatilization, has not only directly polluted workshop condition, threatens health of operators, and unfavorable to atmosphere environment.

Summary of the invention

Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of air-conditioning internal machine inflation pressurize workpiece is provided, and this workpiece should have high working efficiency, and using effect is good, the characteristics that cost is low and favorable environment is protected.

The technological scheme that the utility model proposes is: a kind of air-conditioning internal machine inflation pressurize plastic valve, this valve has a shell, one end of enclosure is shaped on internal thread, the other end is shaped on down internal conical surface near the port, internal thread and to fall between the internal conical surface be an inner cylinder body, being equipped with in the shell can be at the spool of described inner cylinder body upper edge housing axis direction slip, be shaped on some grooves that are beneficial to gas communication on the spool, one end of spool is equipped with and the said matched rubber stopper of inner conical surface, the other end of spool is located an end of a spring, enclosure is also fixed the spring seat that a middle part is shaped on through hole, the other end of this spring seat retaining spring, said spring is subjected to the pressure of said spool and spring seat respectively on the housing axis direction, the end face of said rubber stopper is equipped with push rod, and the internal conical surface one end place of falling of described shell is shaped on the anti-collision lip.

The external shaft of described shell is shaped on the groove that is connected to circle at external peripheral surface to central region.

Rubber pad is equipped with in said internal thread and inner cylinder body connecting part.

Adopt the utility model, when air-conditioning internal machine is tested in pressurize, only need female end of the present utility model is tightened on the joint of refrigerant pipe of air-conditioning internal machine, using original inflation connecting sleeve just can back down rubber stopper of the present utility model directly inflates, wait to be inflated to authorized pressure and just can extract the inflation connecting sleeve, the pressure of spring pressure of the present utility model and gas just is pressed on down rubber stopper on the internal conical surface, produces sealing effect, need not gas welding and seals.If need to discharge and reclaim gas, as long as back down rubber stopper with original instrument.If needing to repair refrigerant pipe also can inflate and reclaim repeatedly, need not to change this valve and gas welding and seal during test, especially feel convenient.In still can staying, EOT, the utility model replace original copper pipe and copper nut on the machine joint.

Adopt the utility model, operation such as not only system horn mouth, gas welding can be sealed and all save, required personnel and tool equipment omit in the lump, and need not to use copper pipe and copper nut, add that testing efficiency significantly improves, and testing cost is able to remarkable reduction; And owing to seal without gas welding, the refrigeration agent volatilization phenomenon when having avoided gas welding to seal has fully effectively guaranteed the healthy of staff, has optimized the workshop air quality, has reduced pollution of atmosphere; Also avoid the acetylene transportation, preserved the safety problem that is produced.In addition, the utility model substantially all can be made of plastic, can reduce the complete machine cost under the prerequisite of guaranteeing the air-conditioning quality.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that the A-A of the spool among Fig. 1 is to schematic cross-section.

Embodiment

As shown in Figure 1, this air-conditioning internal machine inflation pressurize plastic valve has a shell 2, and an end of enclosure is shaped on internal thread 2-1, and the track bolt of this screw thread and air-conditioning internal machine refrigerant pipe adapts; The other end of enclosure is shaped on the young interior big 2-2 of falling the internal conical surface near the port; The zone line of enclosure is inner cylinder body 2-3, being equipped with in this inner cylinder body can be at the spool 5 of described housing axis direction slip, one end of spool is equipped with and the matched rubber stopper 7 of said inner conical surface, the other end of spool is located an end of a spring 4, enclosure is also fixed a spring seat 3, the other end of this spring seat retaining spring 4, said spring 4 is subjected to the pressure of said spool and spring seat respectively on the housing axis direction; For helping gas portion's circulation in the enclosure, the middle part of spring seat 3 is shaped on through hole, is shaped on some grooves on the spool 5.The spool that present embodiment provides as shown in Figure 1 and Figure 2, its cross section is shaped on four blades, the top of each blade 5-1 all with inner cylinder body 2-3 sliding friction, the gap that the curve between per two blades and inner cylinder body surface forms is used for gas communication.The quantity of blade and shape also can be fixed in addition as required.The end that is positioned at the 2-2 of falling the internal conical surface of described shell is shaped on conical anti-collision lip 2-5, is to bump and leak gas for the push rod 8 that prevents rubber stopper end when the pressurize is subjected to mistake.Generally speaking, the end of push rod 8 should be lower than the cross section of outer cover port (or anti-collision lip port).

The end face of described rubber stopper is equipped with the push rod 8 that the middle part is shaped on technology groove 8-1, and the axial zone line of the outside of described shell is shaped on the groove 2-4 around the external peripheral surface lopping, and these structures all are in order to utilize existing widely used inflation connecting sleeve.With the inflation of inflation connecting sleeve the time, when the card pearl on the inflation connecting sleeve embedded groove 2-4, the charging air inlet on the inflation connecting sleeve can back down rubber stopper 7 just and inflate.

Generally speaking, because of shell plastics manufacturing, in screwing on, the utility model can guarantee the joint sealing during machine joint.For improving sealing effect, rubber pad 1 is equipped with in the internal thread 2-1 of enclosure and the joint of inner cylinder body 2-3, and the hole at rubber pad middle part also is used for gas communication.

Described rubber stopper 7 also can adopt other flexible materials except that with the rubber manufacturing, as plastics, polyurethane etc.

In the utility model, the push rod bolt 9 on the push rod 8 is fastened on the spool 5 after passing pressure pad 6, and the three is connected as a single entity.

The utility model is except that spring, rubber stopper and rubber pad, and other all parts all can adopt plastics to make.

Claims

1, a kind of air-conditioning internal machine inflation pressurize plastic valve, it is characterized in that this valve has a shell (2), one end of enclosure is shaped on internal thread (2-1), the other end is shaped on down internal conical surface (2-2) near the port, internal thread and to fall between the internal conical surface be an inner cylinder body (2-3), being equipped with in the shell can be at the spool (5) of described inner cylinder body upper edge housing axis direction slip, be shaped on some grooves that are beneficial to gas communication on the spool, one end of spool is equipped with and the said matched rubber stopper of inner conical surface (7), the other end of spool is located an end of a spring (4), enclosure is also fixed the spring seat (3) that a middle part is shaped on through hole, the other end of this spring seat retaining spring (4), said spring (4) is subjected to the pressure of said spool and spring seat respectively on the housing axis direction, the end face of said rubber stopper is equipped with push rod (8), and the internal conical surface one end place of falling of described shell is shaped on anti-collision lip (2-5).

2, a kind of air-conditioning internal machine inflation pressurize plastic valve according to claim 1 is characterized in that the external shaft of described shell is shaped on the groove (2-4) that is connected to circle at external peripheral surface to central region.

3, a kind of air-conditioning internal machine inflation pressurize plastic valve according to claim 1 and 2,, it is characterized in that said internal thread (2-1) and inner cylinder body (2-3) connecting part be equipped with rubber pad (1).