CN203036925U

CN203036925U - Throttle valve

Info

Publication number: CN203036925U
Application number: CN201320046953.2U
Authority: CN
Inventors: 王伟东
Original assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Current assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2013-07-03
Anticipated expiration: 2023-01-18

Abstract

Provided is a throttle valve. The throttle valve is mounted in an air conditioner pipeline and has a throttling function. The throttle valve comprises a tubular body, the body is composed of a valve seat, a valve core, a filter net and the like, wherein the valve seat, the valve core, the filter net and the like are arranged in the body, a valve hole and a valve opening are formed in the valve seat, axial pores are formed in the valve core, the valve seat and the valve core are arranged in a series connection mode, five prismatic blocks are arranged on the periphery of the vale core, an air guiding groove is formed in the tail portion of the valve core, cylindrical bosses arranged on the periphery of the prismatic blocks and the inner wall of the body are in clearance fit, and a positioning ring is arranged on the tail end portion of the valve core. The throttle valve is relatively simple in structure, easy to process, low in manufacture cost and good in performance stability, and can effectively improve the operation effect 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, in air-conditioning system, restricting element is the critical component that determines air conditioner refrigerating, heating performance, now the restricting element that generally uses is made up of-main capillary, a secondary capillary, check valve, filter and each connecting line, in use, by 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.

Granted publication CN200940727Y utility model patent discloses a kind of choke valve, the choke valve of this structure includes the body of a tubulose, sealing and fixing has valve seat in the body, be shaped on valve opening and slideway on the valve seat, be provided with slidably spool in the slideway, spool is provided with axial pore, and the spool periphery has three rib pieces, is shaped on the boss that cooperates with valve base inner wall on the rib piece.The choke valve of this kind structure, owing to spool is included in the valve seat, and the valve seat domestic demand arranges and the movable slideway that cooperates of spool, so the relative processed complex of valve seat, consumptive material is many, under identical flow area, body, valve seat size are big relatively, and therefore corresponding overall cost is higher; When particularly the choke valve level was installed, the spool of three rib pieces relied on the valve seat inner slide on one side, and spool and valve seat inner slide are eccentric big, when spool and valve seat valve port were in closed condition, the valve port axiality was poor on spool head sealing surface and the valve seat, and leakage rate is big, therefore, stability is poor; And, because spool and valve seat inner slide are eccentric big, cold-producing medium flow through each rib block gap flow of spool and the resistance difference big, cause the spool vibration easily, thus the generation extraordinary noise.

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 is few with material, makes easily and cost is low, the metastable a kind of choke valve of performance.

For achieving the above object, choke valve of the present utility model includes the body of a tubulose, 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, described valve seat and spool arranged in series, have five rib pieces in the spool periphery, the afterbody of spool is shaped on an air slot, and cylindrical boss and inner body wall matched in clearance that the rib piece periphery of spool is shaped on also are provided with centring ring at the tail end of spool.

Preferably, described centring ring and inner body wall cooperate the back to beat concave point by corresponding body outer tube wall place to fix.

Optionally, described centring ring cooperates the back to fix by corresponding body outer tube wall place's reducing with inner body wall.

Preferably, the air slot that is shaped on of described spool afterbody is cylindrical.

Optionally, the air slot that is shaped on of described spool afterbody is for conical.

Optionally, described valve seat, valve core material are brass or aluminium alloy.

Optionally, the outer end of described centring ring is set with a screen pack.

The restricting element that the capillary that choke valve of the present 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 the setting of connecting, having omitted the valve seat domestic demand makes and the movable slideway that cooperates of spool, and three rib pieces of spool band are designed to be with five rib pieces, and at the spool afterbody air slot is set, when having reduced choke valve and having installed and used, the degree of eccentricity of spool and valve seat, flow and the resistance uniformity when improving cold-producing medium by each rib block gap of spool, therefore overall structure is simple relatively, identical circulation area lower volume is less, overall low cost of manufacture, and stable performance reduce the probability that produces extraordinary noise;

Description of drawings

Fig. 1 is choke valve specific embodiment longitudinal section of the present utility model;

Fig. 2 is the longitudinal section of valve seat construction in 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 right view of the utility model specific embodiment;

Fig. 4 (a) is the front view of the another specific embodiment of the utility model valve core structure;

Fig. 4 (b) is the right view of the another specific embodiment of the utility model valve core structure;

The specific embodiment

Describe the embodiment of the utility model choke valve below with reference to the accompanying drawings in detail.Fig. 1 is the longitudinal section of the utility model choke valve embodiment, because the diagram choke valve is to be contained in the circulation of refrigerant such as air-conditioner to use, therefore, it is provided with tubular body 10, body 10 is made for red copper tubing, but material TP2, T2 etc., in order to be connected with the air-conditioning system pipeline, and be shaped on nose end A, B, be provided with valve seat 30 in the body 10, structure as shown in Figure 2, the valve seat material must be convenient to processing and have rustless property, available brass bar such as Hpb59-1 form through metalworking, but also rods and bars of aluminium alloy such as LD30 form through metalworking, and valve seat 30 centers are shaped on valve opening 30a and valve port 30b, corresponding valve opening 30a place external cylindrical surface is shaped on some groove 30c on valve seat 30, its groove 30c portion is with after body 10 inner tubal walls cooperate, and in the outer tube wall portion engaging reducing of body 10 correspondences or implement extruding etc., the material of body 10 pressed be embedded in sealing and fixing in the groove 30c.

Fig. 3 (a), Fig. 3 (b) are front view and the right view of spool 40 among the utility model embodiment, spool 40 coaxial series connection are arranged on the valve port 30b end of valve seat 30, spool 40 centers are provided with axial pore 40a, afterbody is shaped on a cylindrical air slot 40c, have five rib pieces on its periphery, be shaped on cylindrical boss 40b in rib piece periphery, its size and body 10 inwall face of cylinder matched in clearance.During concrete enforcement, the air slot that the spool afterbody is shaped on also can be shown in Fig. 4 (a), 4 (b) conical 40c ', but other shapes also, but the size of air slot must be able to make in the spool 40 space of five rib interblocks that axially pore 40a and spool periphery have ventilate, spool 40 is when actual fabrication, and the special-shaped bar that available brass, aluminium alloy etc. are drawn into five rib pieces forms by metalworking.

The centring ring 50 that is provided with at the tail 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 by corresponding body 10 outer tube wall places and is fixed, and also can cooperate the back to fix by corresponding body 10 outer tube wall place reducings with body 10 inwalls by centring ring 50.When choke valve specifically used, for filtering impurity, the dirt in the air-conditioning system, centring ring 50 ends were provided with a screen pack 20, and in concrete the enforcement, screen pack 20 can be made of 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 enters from the throttle valve A end, cold-producing medium enters the valve opening 30a in the valve seat 30, and simultaneously because pressure A holds high B end low, push spool 40 to centring ring 50 until blocking, this moment, spool 40 was in open mode, and at this moment hold to B the rib block gap that has on valve opening 30a, the valve port 30b of cold-producing medium in valve seat 30, spool 40 peripheries.

When cold-producing medium flows into from choke valve B end, 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, thereby force cold-producing medium through behind the filter screen 20, pass through in the axial pore 40a of the cold-producing medium of cleaning in the spool 40, the axial pore 40a of spool 40 processes for accurately designing according to flow, feasible cold-producing medium by whole choke valve reaches rated value, thereby realizes specified efficiency.

The above only is preferred embodiment 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 improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. choke valve, include the body of a tubulose, 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, it is characterized in that: described valve seat and spool arranged in series, periphery at spool has five rib pieces, afterbody at spool is shaped on air slot, and cylindrical boss and tubular body inwall matched in clearance in that the rib piece periphery of spool is shaped on also are provided with a centring ring at the spool tail end.

2. a kind of choke valve as claimed in claim 1 is characterized in that: described centring ring cooperates the back to beat concave point by corresponding body outer tube wall place with inner body wall to fix.

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

4. a kind of choke valve as claimed in claim 1, it is characterized in that: the air slot that described spool afterbody is shaped on is cylindrical.

5. a kind of choke valve as claimed in claim 1 is characterized in that: the air slot that described spool afterbody is shaped on is for conical.

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

7. a kind of choke valve as claimed in claim 1, it is characterized in that: the outer end of described centring ring is set with a screen pack.