CN202432773U

CN202432773U - Throttle valve

Info

Publication number: CN202432773U
Application number: CN2011204093276U
Authority: CN
Inventors: 王伟东
Original assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Current assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Priority date: 2011-10-16
Filing date: 2011-10-16
Publication date: 2012-09-12
Anticipated expiration: 2021-10-16

Abstract

Disclosed is a throttle valve installed in a pipeline of an air conditioner for throttling. The throttle valve comprises a tubular body, and a valve seat, a valve core, a filter screen and the like which are arranged in the body, wherein a valve hole and a valve port are arranged in the valve seat, an axial pore is arranged in the valve core, the periphery of the valve core is provided with three or more than three prism blocks and a cylindrical boss, the valve seat is connected with the valve core in series, and the cylindrical boss arranged on the valve core is in a clearance fit with the tubular body wall. The throttle valve has the advantages of being relatively simple in structure, simple in machining, low in manufacturing cost, good in stability of the fluid, and capable of effectively improving operating effects of cooling and heating of an air conditioning system.

Description

A kind of choke valve

Technical field

The utility model relates to a kind of choke valve, particularly relates to the one-way throttle valve that plays throttling action in the heat pump type air conditioner.

Background technology

In the prior art; The structure composition of heat pump type air conditioner is mainly compressor, condensing unit, restricting element and evaporimeter, and in air-conditioning system, restricting element is the critical component of decision air conditioner refrigerating, heating performance; The existing restricting element that generally uses is made up of a main capillary, a secondary capillary, check valve, filter and each connecting line; In use, through the unidirectional control action of check valve, two different flows in the stream are being freezed, heated to the realization air-conditioning system.The restricting element of this structure is formed complicated, and volume is big, and consumptive material is many, and more because of its pad again, the phenomenon of the refrigerant external leakage that produces in the air-conditioner use also increases.

The disclosed choke valve of Granted publication CN200940727Y utility model patent; The choke valve of this structure has the body of a tubulose, and sealing and fixing has valve seat in the body, and valve seat is made up of valve opening and slideway; Be provided with slidably spool in the slideway; Spool is provided with axial pore, and the spool periphery has three rib pieces, has the boss that cooperates with valve base inner wall on the rib piece.The choke valve of this structure, owing to spool is included in the valve seat, and the valve seat domestic demand is provided with and the movable slideway that cooperates of spool, so the relative processed complex of valve seat, and consumptive material is many, and under identical flow area, body, valve seat size are big relatively, and therefore corresponding overall cost is higher.

Summary of the invention

The utility model is developed in view of overcoming the above problems, and its purpose is to provide a kind of overall structure simple, and processing is simple, and is few with material, makes easily and the low a kind of choke valve of cost.

For realizing above-mentioned purpose, the choke valve of the utility model includes the body of a tubulose, and sealing and fixing has a valve seat to reach movably spool in the body; Be shaped on valve opening and valve port in the valve seat; Have axial pore in the spool, the rib piece periphery that has more than three or three in the spool periphery is shaped on cylindrical boss, described valve seat and spool arranged in series; Cylindrical boss that is shaped on the spool and tubular body inwall matched in clearance also are provided with centring ring in the spool end.

As the specific embodiment of the utility model choke valve, described centring ring is beaten concave point with inner body wall cooperation back through corresponding body outer tube wall place and is fixed.

As the specific embodiment of the utility model choke valve, described centring ring cooperates the back to fix through corresponding body outer tube wall place's reducing with inner body wall.

As the specific embodiment of the utility model choke valve, said valve seat, valve core material are brass or aluminium alloy.

As the specific embodiment of the utility model choke valve, the outer end of said valve seat is set with a screen pack.

The restricting element that the capillary that the choke valve of the utility model uses present situation, check valve etc. are formed is integrated; Spool in the disclosed CN200940727Y utility model patent is separated with valve seat and arranged in series; Therefore structure is simple relatively; Processing is simple, and identical circulation area lower volume is less, low cost of manufacture.

Description of drawings

Fig. 1 is the structure longitudinal section of the utility model specific embodiment;

Fig. 2 is the valve seat construction longitudinal section of Fig. 1 specific embodiment;

Fig. 3 (a) is the valve core structure front view of the utility model specific embodiment;

Fig. 3 (b) is the valve core structure left view of the utility model embodiment;

The specific embodiment

Specify the embodiment of the utility model choke valve below according to accompanying drawing.Fig. 1 is the structure longitudinal section of the utility model choke valve embodiment, because the choke valve of illustrated embodiment is to be contained in the refrigerant circulation such as air-conditioner to use, therefore; It is provided with tubular body 10, and body 10 is the manufacturing of red copper tubing, but material TP2, T2 etc.; So that be connected, and be shaped on nose end A, B, be provided with valve seat 30 in the body 10 with the air-conditioning system pipeline; As shown in Figure 2, the valve seat material must be convenient to processing and have rustless property, and available brass bar such as Hpb59-1 form through metalworking; Also but rods and bars of aluminium alloy such as LD30 form through metalworking; Valve seat 30 centers are shaped on valve opening 30a and valve port 30b, are being shaped on some groove 30c on the corresponding valve opening 30a place external cylindrical surface on the valve seat 30, and its groove 30c portion is with after body 10 inner tubal walls cooperate; 10 corresponding outer tube wall portions engage reducing or implement extruding etc. at body, the material of body 10 are pressed be embedded in sealing and fixing in the groove 30c.

Fig. 3 (a), Fig. 3 (b) are the front view and the left view of spool 40 among the utility model embodiment, and spool 40 coaxial series connection are arranged on the valve port 30b end of valve seat 30, and spool 40 centers are provided with axial throttling pore 40a; Have the rib piece on its periphery; The rib piece can be shaped on cylindrical boss 40b in rib piece periphery more than three or three, its size and body 10 inwall face of cylinder matched in clearance; During actual fabrication, available brass, aluminium alloy etc. pull into band rib piece bar after metalworking form.

Be provided with centring ring 50 in the end of spool 40; Centring ring 50 centers are shaped on through hole; Cylindrical is provided with groove; Centring ring 50 is beaten concave point with body 10 inwalls cooperation back through corresponding body 10 outer tube wall places and is fixed, but also centring ring 50 cooperates the back to fix through corresponding body outer tube wall place's reducing with body 10 inwalls.When choke valve specifically used, for filtering impurity, the dirt in the air-conditioning system, the valve opening 30a end on the valve seat 30 was provided with a filter screen 20.In the practical implementation, screen pack 20 can be made up of the stainless steel wire mesh grid and the reticulum of 60-150 order number.

The operation principle of this choke valve in the air-conditioner hose system is such; When cold-producing medium gets into from one-way throttle valve A end, behind screen pack 20, the valve opening 30a in the cold-producing medium of the cleaning entering valve seat 30; Push spool 40 to centring ring 50 until blocking; This moment, spool 40 was in open mode, and hold to B the rib block gap that at this moment has on the valve opening 30a of cold-producing medium in valve seat 30, valve port 30b, spool 40 peripheries

When cold-producing medium when choke valve B end flows into because pressure B holds high A end low, spool 40 is pressed towards the A end; Make spool 40 be in closed throttle, because body 10 and valve seat 30 sealing and fixing seal between the valve port 30b of spool 40 and valve seat 30; Force in the axial pore 40a of cold-producing medium in the spool 40 from face and to pass through; The axial pore 40a of spool 40 is for to process according to the flow precise design, and feasible cold-producing medium through whole choke valve reaches rated value, thereby realizes specified efficiency.

The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.

Claims

1. choke valve includes the body of a tubulose, and sealing and fixing has a valve seat and spool movably in the body; Be shaped on valve opening and valve port in the valve seat; Have axial pore in the spool, the rib piece periphery that has more than three or three in the spool periphery is shaped on cylindrical boss, it is characterized in that: described valve seat and spool arranged in series; Cylindrical boss that is shaped on the spool and tubular body inwall matched in clearance also are provided with a centring ring in the spool end.

2. a kind of choke valve as claimed in claim 1 is characterized in that: described centring ring is beaten concave point with inner body wall cooperation back through corresponding body outer tube wall place and is fixed.

3. a kind of choke valve as claimed in claim 1 is characterized in that: described centring ring cooperates the back to fix through corresponding body outer tube wall place's reducing with inner body wall.

4. a kind of choke valve as claimed in claim 1 is characterized in that: said valve seat, valve core material are brass or aluminium alloy.

5. a kind of choke valve as claimed in claim 1 is characterized in that: the outer end of said valve seat is set with a screen pack.