CN201583070U

CN201583070U - Two-way throttle valve

Info

Publication number: CN201583070U
Application number: CN2010200036246U
Authority: CN
Inventors: 王伟东
Original assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Current assignee: XINCHANG FENGYI ELECTRIC APPLIANCE CO Ltd
Priority date: 2010-01-09
Filing date: 2010-01-09
Publication date: 2010-09-15
Anticipated expiration: 2020-01-09

Abstract

The utility model discloses a two-way throttle valve for a heat-pump type air-conditioner and installed in an air-conditioner pipeline for playing a role in throttling. The throttle valve comprises a tubular body, two symmetrical valve seats in the body, valve cores, a filter screen and the like, wherein the valve seats are internally provided with valve openings and slideways; the valve cores are cylindrical; the cylindrical surfaces of the valve cores are matched with the slideways; transverse through-flow holes are arranged beside ports which are arranged on the valve seats and matched with the head parts of the valve cores and correspond to the valve openings; and the outer cylindrical surfaces on the valve seats, related to the transverse through-flow holes, form vent ring grooves with the inner cylindrical surface of the body. The two-way throttle valve has relatively simple structure, easy manufacturing, lower cost and good fluid stability, and can effectively improve the refrigeration and heating effects of an air-conditioner system.

Description

A kind of bidirectional throttling valve

Affiliated technical field

The utility model relates to a kind of bidirectional throttling valve, particularly relates to the bidirectional throttling 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 of decision air conditioner refrigerating, heating performance, now the restricting element that generally uses is made up of a 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 CN2886461Y utility model patent discloses a kind of bidirectional throttling valve, the choke valve of this structure has the body of a tubulose, be respectively arranged with the valve seat that two reverse symmetry are settled in the body, respectively be mounted with movably in the valve seat, the centre has axial pore and periphery has the spool of three rib pieces, the axial pore of two spools is small one and large one, be respectively applied for refrigeration, heat the process throttling, on two valve seats, also respectively be provided with a fluid screen pack in addition in valve opening outer end, the tubular body.The choke valve of this structure, in actual manufacture process, spool need be used the fixed section bar that draws, and structure is complicated, when spool is closed, poor sealing performance, therefore, this choke valve manufacturing cost is higher, the stability of use is not good.

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 the use performance is relatively stable, makes easily and the low a kind of bidirectional throttling valve of cost.

For achieving the above object, choke valve of the present utility model includes the body of a tubulose, sealing and fixing has the valve seat of two symmetries in the body, be shaped on valve opening and slideway in the valve seat, be provided with slidably spool in the slideway, have axial pore on the spool, on the external port of valve opening, respectively be provided with a screen pack in the tubular body, described spool is cylindric, match with slideway in its face of cylinder, the valve opening port that matches with the spool head on valve seat is other to be provided with horizontal through flow hole, the external cylindrical surface that is associated with horizontal through flow hole on valve seat, the body inner cylinder face constitutes the ventilation annular groove.

As the specific embodiment of the utility model bidirectional throttling valve, the other horizontal through flow hole that is provided with of the valve opening port that matches with the spool head on the valve seat also can be one, also can be more than one.

As the specific embodiment of the utility model bidirectional throttling valve, the sectional area of other of being provided with of the valve opening port that matches with the spool head on the described valve seat, a plurality of horizontal through flow holes and must be not less than the valve opening sectional area.

As the specific embodiment of the utility model bidirectional throttling valve, the slideway port of described valve seat is the riveting reducing, drops out in slideway to block spool.

As another specific embodiment of the utility model bidirectional throttling valve, the slideway port of described valve seat drops out in slideway to block spool for a circlip is set.

The restricting element that the capillary that bidirectional throttling valve of the present utility model uses present situation, check valve etc. are formed is integrated, the spool that periphery in the alternative disclosed CN2886461Y utility model patent of cylindric spool is had three rib pieces, therefore structure is simple relatively, volume is less, low cost of manufacture.

Description of drawings

Fig. 1 is a bidirectional throttling valve embodiment longitudinal section of the present utility model;

Fig. 2 is that bidirectional throttling valve of the present utility model drops out in slideway for blocking spool, and the slideway port of valve seat is the partial sectional view that a circlip structure is set;

Fig. 3 a is the positive view of valve core structure among the bidirectional throttling valve embodiment of the present utility model, the left view of spool among Fig. 3 b embodiment;

The specific embodiment

Describe the embodiment of the utility model bidirectional throttling valve below with reference to the accompanying drawings in detail.Fig. 1 is the longitudinal section of the two-way joint valve of the utility model 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 1, valve body 1 is made for red copper tubing, but material TP2, T2 etc., so that be connected with the air-conditioning system pipeline, and be shaped on nose end A, B, be provided with the valve seat 2a of two reverse symmetry in the

body

1,2b, valve seat must be convenient to processing and have rustless property, available brass bar such as Hpb59-1 form through metalworking, valve seat 2a, 2b is shaped on valve opening 6a, 6b and slideway 7a, 7b, at slideway 7a, the valve seat cylindrical of 7b correspondence is shaped on a face of

cylinder

11a, 11b is at close valve opening 6a, the 6b place also is shaped on slideway 7a, 7b and face of cylinder 11a, the through flow hole 5a that 11b communicates, 5b, through flow hole can one, also can be a plurality of, but through flow hole 5a, the sectional area of 5b and must be not less than valve opening 6a, the 6b sectional area.Be shaped on some grooves on corresponding valve opening 6a, the 6b place external cylindrical surface on valve seat 2a, the 2b, after body 1 inner headed face cooperates, implement extruding etc. in body 1 cylindrical groove corresponding position, the material pressure of body 1 is embedded in sealing and fixing in the groove, and body 1 inner cylinder face becomes ventilation

annular groove

12a, 12b with face of cylinder 11a, the 11b ditch that valve seat 2a, 2b cylindrical are shaped on so simultaneously; Be provided with slidably

spool

3a, 3b in slideway 7a, the 7b on valve seat, at slideway 7a, 7b port away from valve opening 6a, 6b, drop out in slideway for blocking spool, the slideway port of valve seat is through riveting reducing 8a, 8b, also can be as shown in Figure 2, slideway port at valve seat is provided with a circlip 10, drops out in slideway 7a, 7b to

block spool

3a, 3b.

The slidably spool 3a, the 3b that are provided with in slideway are cylindric, shown in Fig. 3 a, 3b, bars such as its available brass, stainless steel form through metalworking, its face of cylinder and slideway are matched in clearance, be shaped on

axial pore

9a, 9b in spool 3a, the 3b, one end is shaped on valve port, with valve opening 6a, when 6b contacts, can keep sealing.

The operation principle of this bidirectional throttling valve in the air-conditioner hose system is such, when cold-producing medium enters from the throttle valve A end, behind filter screen 4a, the cold-producing medium of cleaning enters the valve opening 6a among the valve seat 2a, push spool 3a to the B end, being pushed into reducing 8a up to spool 3a blocks, this moment, spool 3a was in open mode, at this moment the through flow hole 5a of cold-producing medium in valve seat 2a, ventilation annular groove 12a is to spool 3b, and simultaneously because pressure A holds high B end low, spool 3b is pressed towards the B end, make spool 3b be in closed throttle, because body 1 and valve seat 2b sealing and fixing, seal between the valve opening 6b of spool 3b and valve seat 2b, force in the axial pore 9b of cold-producing medium in the spool 3b from face and pass through, the axial pore 9b of spool 3b for according to flow accurately design process, feasible cold-producing medium by whole bidirectional throttling valve reaches rated value, thereby realizes specified efficiency.

When cold-producing medium when choke valve B end flows into, behind filter screen 4b, the cold-producing medium of cleaning enters the valve opening 6b in the valve seat 2b, equally spool 3b is pushed away to the A end, being pushed into reducing 8b up to spool 3b blocks, this moment, spool 3b was in open mode, at this moment the through flow hole 5b of cold-producing medium in valve seat 2b, ventilation annular groove 12b is to spool 3a, and simultaneously because pressure B holds high A end low, spool 3a is pressed towards the A end, make spool 3a be in closed throttle, because body 1 and valve seat 2a sealing and fixing seal between the valve opening 6a of spool 3a and valve seat 2a, force in the axial pore 9a of cold-producing medium in the spool 3a from face and to pass through, the axial pore 9a of spool 3a processes for accurately designing according to flow, and feasible cold-producing medium by whole bidirectional throttling valve reaches rated value, thereby realizes specified efficiency.

Claims

1. bidirectional throttling valve that heat pump type air conditioner is used, include the body (1) of a tubulose, the interior sealing and fixing of body (1) has the valve seat (2a) of two symmetries, (2b), valve seat (2a), be shaped on valve opening (6a) (2b), (6b) and slideway (7a), (7b), slideway (7a), be provided with slidably spool (3a) (7b), (3b), spool (3a), have axial pore (9a) (3b), (9b), at valve opening (6a), on the external port (6b), respectively be provided with a screen pack (4a) in the tubular body (1), (4b), it is characterized in that: described spool (3a), be cylindric (3b), its face of cylinder and slideway (7a), (7b) match, at valve seat (2a), (2b) last and spool (3a), (3b) the corresponding valve opening (6a) of the valve seat that matches of head, (6b) the other horizontal through flow hole (5a) that is provided with of port, (5b), on valve seat with horizontal through flow hole (5a), the external cylindrical surface that (5b) is associated (11a), (11b), body (1) inner cylinder face constitutes ventilation annular groove (12a), (12b).

2. bidirectional throttling valve as claimed in claim 1 is characterized in that: valve seat (2a), (2b) go up other horizontal through flow hole (5a), (5b) that is provided with of the valve opening port that matches with the spool head also can be one, also can be more than one.

3. as claim 1,2 described bidirectional throttling valves, it is characterized in that: valve seat (2a), (2b) go up the sectional area of other of being provided with of the valve opening port that matches with the spool head, a plurality of horizontal through flow hole (5a), (5b) and must be not less than valve opening (6a), (6b) sectional area.

4. choke valve as claimed in claim 1 is characterized in that: the slideway port of described valve seat (2a), (2b) is reducing (8a), (9b) through riveting, with block spool (3a), (3b) drops out in slideway (7a), (7b).

5. bidirectional throttling valve as claimed in claim 1 is characterized in that: the slideway port of described valve seat (2a), (2b) is for being provided with a circlip (10), with block spool (3a), (3b) drops out in slideway (7a), (7b).