CN202612713U

CN202612713U - Electromagnetic directional valve

Info

Publication number: CN202612713U
Application number: CN 201220311770
Authority: CN
Inventors: 邵巨灿; 金华海; 朱方英
Original assignee: Zhejiang DunAn Hetian Metal Co Ltd
Current assignee: Zhejiang DunAn Hetian Metal Co Ltd
Priority date: 2012-06-30
Filing date: 2012-06-30
Publication date: 2012-12-19
Anticipated expiration: 2022-06-30

Abstract

An electromagnetic directional valve belongs to a system element of a heat pump type air conditioner and comprises a main valve of a cylindrical valve body, a guide valve and a piston part, wherein the guide valve is communicated with the main valve by a plurality of capillary tubes, the piston part slides in an inner cavity of the valve body, one end of the capillary tube d is connected with the guide valve, the other end of the capillary tube d is connected with the valve body and communicated with an exhaust port of a compressor, the capillary tube d is welded on the valve body, a capillary tube hole does not need to be formed in a connection pipe D, so that the strength and the anti-shock capability of the connection pipe D are improved, and the problems of leakage and cracking and the like can be prevented.

Description

A kind of solenoid directional control valve

Technical field

The utility model relates to fluid control component in a kind of refrigeration system, in particular for the solenoid directional control valve of the heat pump type air conditioner control refrigerant flow direction.

Background technique

The heat pump type air conditioner of existing technology is as shown in Figure 1, mostly comprises compressor 4, indoor heat converter 7, outdoor heat converter 5, expansion mechanism 6 and switching refrigeration, heats the solenoid directional control valve 3 that stream is used, and these all are well-known technology.As shown in Figure 1; This solenoid directional control valve has a valve body 31 and two end caps 33; Inner valve pocket is divided into left enclosed cavity 303, middle enclosed cavity 301, right enclosed cavity 302 totally three chambers by piston element, also has a valve seat 36 and the guiding valve 35 that relative valve seat 36 is provided with in the valve pocket; Solenoid directional control valve also comprises a pilot valve 2 and coil 1 in addition; Pilot valve 2 internal fixation have a fixing end socket 21 and moving iron core 24 that can be movable; Solenoid directional control valve is respectively by 2 different runners under coil component 1 energising, two kinds of working staties of outage, thereby makes heat pump type air conditioner realize refrigeration, heat or freeze, heat two kinds of operating modes respectively.Usage mode as shown in Figure 1 is when solenoid directional control valve cuts off the power supply, to realize the refrigeration of air-conditioning and when energising, realize a kind of situation that air-conditioning heats.Under the air conditioner refrigerating operating mode, the solenoid directional control valve no electric circuit, at this moment the e of pilot valve 2 end communicates with the s end, and the d end communicates with the c end, is that to hold with the D of solenoid directional control valve be that high voltage terminal is communicated with because d holds; The same right-hand member chamber that links to each other with the c end also is high voltage terminal; And owing to hold the s end that communicates for to be connected with low voltage terminal with e; The left end chamber that correspondingly is connected with the e end is a low voltage terminal, be communicated with the S end thereby guiding valve 35 moves the E end that makes solenoid directional control valve to the left, and the C end is communicated with the D end; At this moment the whole circulation of air-conditioning is such: pressurized gas → adapter D → main valve inner chamber → adapter C → outdoor heat converter 5 → throttle element 6 → indoor heat converter 7 → adapter E → adapter S that compressor 4 is discharged → be compressed machine 4 then to suck, thus accomplish a circulation; To the motion of end socket 21 directions, at this moment pilot valve e end and d end communicate under the effect of electromagnetic force for solenoid directional control valve energising when heating, at this moment moving iron core 24; The s end communicates with the c end; Correspondingly, the D of solenoid directional control valve end is communicated with the E end, and C end and S end are communicated with; At this moment the whole circulation of air-conditioning is such: exhaust outlet of compressor → adapter D → main valve inner chamber → adapter E → indoor heat converter 7 → throttle element 6 → outdoor heat converter 5 → adapter C → adapter S → compressor air suction mouth, thus accomplish a circulation.

Capillary tube d is welded on and takes on the D at present, generally on adapter D, offers than the big capilar bore of capillary tube d external diameter earlier, and capillary tube d is inserted in the capilar bore and with taking over the D welding and fixes, and realizes the collection of 2 pairs of compressor 4 relief opening high pressure air of pilot valve.Be installed in air condition compressor 4 relief openings owing to take over D, bear very big gas shock, bear bigger vibration simultaneously; And offer capilar bore on the D because of taking over; Make and take near the intensity reduction of the D perforate position, and, have certain welding stress in the weld joint because the welding part is arranged; When solenoid directional control valve uses for a long time, take over D and occur problems such as leakage, fracture easily.

The model utility content

The technical problem that the utility model will solve and the technical assignment of proposition are to overcome the defective that exists in the existing technology, and a kind of solenoid directional control valve that D appearance fracture appears leaking and taking in the D welding part that prevents to take over is provided.The utility model adopts following technological scheme for this reason:

A kind of solenoid directional control valve; The pilot valve that comprises the main valve of the valve body that is provided with tubular, is communicated with main valve through four capillary d, e, s, c; At the piston element that body cavity slides, wherein a capillary d one end is connected with pilot valve, and the other end is connected with the valve body that is communicated with exhaust outlet of compressor.

Preferably, body cavity is divided into independently sealed cavity of three of left, center, right by piston element, enclosed cavity during said capillary tube d is communicated with, and capillary tube e is communicated with left enclosed cavity, and capillary tube s is communicated with right enclosed cavity.

Preferably, the valve body that middle enclosed cavity is relative is provided with the capillary tube mounting hole, and capillary tube d is connected fixing with valve body through the capillary tube mounting hole.

Preferably, the capillary tube mounting hole is the flange hole.

Preferably, described main valve also comprises lining, and an end of lining is pressed into the capillary tube of valve body and installs, and capillary tube d inserts in the lining from the other end of lining.

The beneficial effect of the utility model is: through capillary tube d is welded on the valve body, making to take on the D does not need to offer capilar bore again, so increased the intensity and the anti-vibration ability of taking over D, problems such as anti-heads, fracture occur.

Description of drawings

Fig. 1 is the electromagnetic switch valve arrangement of existing technology and the schematic representation that in refrigeration system, uses;

Fig. 2 is the utility model electromagnetic switch valve arrangement and the schematic representation that in refrigeration system, uses thereof;

Fig. 3 is the utility model solenoid directional control valve valve body structure schematic representation.

Embodiment

For making those skilled in the art person understand the utility model scheme better, the utility model is done further detailed description below in conjunction with accompanying drawing and mode of execution.

Solenoid directional control valve mainly is made up of main valve, pilot valve and electromagnetic coil three parts.

Like Fig. 2, shown in 3, main valve 3 comprises the valve body 31 of a tubular, and the entrance sleeve D (being the zone of high pressure) that is connected with compressor 4 outlet end (relief opening) is arranged on it; The discharge connection S (being low pressure area) that is connected with compressor 4 entrances (intakeport), the adapter E that is connected with indoor heat converter 7, the adapter C that is connected with outdoor heat converter 5; There are end cap 33 sealing at valve body 31 two ends, and interior welds has valve seat 36, also have slide block 35 and pair of pistons 34; Connecting rod 32 links into an integrated entity both; Form piston element, valve seat 36 and slide block 35 kinematic pair that partners, piston 34 is formed another to kinematic pair with 31 of valve bodies; Be separated into left enclosed cavity 303 (E side), middle enclosed cavity 301, the right enclosed cavity 302 (C side) that the position can change through piston element; Piston element then leans on shelves with the end cap 33 in the valve body 31 as the location, and in the valve pocket structure that valve body 31 and end cap 33 are formed, capillary tube e is communicated with left enclosed cavity (303); Capillary tube c is communicated with right enclosed cavity (302); Middle enclosed cavity 301 has the joint that connects capillary tube d, and wherein the joint of capillary tube d is the capillary tube mounting hole 304 that is located in the valve body 31, and this mode of execution is the flange hole.Preferably, can increase lining 8, lining 8 is pressed into through crimping in the flange hole of valve body 31, after both crimping are also fixing, capillary tube d is inserted in the lining 8 from the port of the other end of lining 8.Be to drive slide block in the stroke that end face limited of a pair of two end caps 33 of piston 34 valve body 31 in that connect connecting rod 32 to slide, so that realize the switching-over of E, C adapter inner fluid through the mobile displacement of slide block 35.

Pilot valve 2 comprises guide valve seat 22 and sleeve pipe 28, and sleeve pipe 28 right-hand members are welded with end socket 21, and left end and guide valve seat 22 are connected to form the pilot valve inner chamber; Inner chamber is welded with little valve seat 29, offers three step through-holes on the little valve seat 29, is welded with capillary tube e/s/c on the through hole respectively; Guide valve seat 22 is provided with the 4th step through-hole with respect to little valve seat 29 sides, is welded with capillary tube d, capillary tube d and middle enclosed cavity 301, middle enclosed cavity 301 and take over D, capillary tube e and be connected respectively with right enclosed cavity 302 with main valve adapter S, capillary tube c with left enclosed cavity 303, capillary tube s; Therefore the pilot valve inner chamber is the zone of high pressure, and s is a low pressure area, and inner chamber has the core iron 24 that can horizontally slip and suppresses the returning spring 23 in its hole; Also having through riveted joint is one in succession; The trailing frame 25 of riveted fixing in the core iron hole and spring sheet 26 together then, trailing frame 25 has perforate, and the sliding bowl 27 that the bottom has shrinkage pool promptly is inlaid in this hole; 26 roof pressures of spring sheet are on the top of sliding bowl 27; It is close on little valve seat 29 surfaces sliding bowl 27 lower end surfaces, and sliding bowl 27 can slide on little valve seat 29 surfaces with core iron 24/ trailing frame 25 assemblies, and sliding bowl 27 is formed a kinematic pair with little valve seat 29; Its inner chamber (being capillary tube s) is a low pressure area; And its back (being the pilot valve inner chamber) is the zone of high pressure, and therefore sliding bowl 27 is bearing the pressure difference that produces therefrom, and the sealing of kinematic pair is mainly realized by this pressure difference.

Under the air conditioner refrigerating operating mode, solenoid directional control valve no electric circuit, electromagnetic coil 1 no electric circuit; Under the effect of returning spring 23, core iron 24 drives sliding bowl 27 and moves to left together, thereby the e end of pilot valve 2 and s end are communicated; D end and c end communicate; Because the d end is to be connected with the middle enclosed cavity 301 of solenoid directional control valve, and middle enclosed cavity 301 is that high voltage terminal is communicated with the D end, so the d end is communicated with the D end; The same right enclosed cavity 302 that links to each other with the c end also is high voltage terminal; And owing to hold the s end that communicates for to be connected with low voltage terminal with e; The left enclosed cavity 303 that correspondingly is connected with the e end is low voltage terminal, be communicated with the S end thereby guiding valve 35 moves the E end that makes solenoid directional control valve to the left, and the C end is communicated with the D end; At this moment the whole circulation of air-conditioning is such: pressurized gas → adapter D → main valve inner chamber → adapter C → outdoor heat converter 5 → throttle element 6 → indoor heat converter 7 → adapter E → adapter S that the compressor 4 is discharged → machine that is compressed then sucks, thereby accomplishes a circulation.

Solenoid directional control valve energising when heating; At this moment moving iron core 24 moves to end socket 21 directions under the effect of electromagnetic force; At this moment pilot valve e end and d end communicate, and the s end communicates with the c end, correspondingly; The D end of solenoid directional control valve is communicated with the E end; C end and S end are communicated with, and at this moment the whole circulation of air-conditioning is such: compressor 4 relief openings → adapter D → main valve inner chamber → adapter E → indoor heat converter 7 → throttle element 6 → outdoor heat converter 5 → adapter C → adapter S → compressor air suction mouth, thus accomplish a circulation.

The above only is the preferred embodiment that the utility model is used for solenoid directional control valve, is not the restriction to the utility model.Any those of ordinary skill in the art; Do not breaking away under the utility model technological scheme orientation situation; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to the utility model technological scheme, or are revised as the equivalent embodiment of equivalent variations.For example, capillary tube d can directly fix welding with the capillary tube mounting hole 304 that is located in the valve body 31.

Therefore, every content that does not break away from the utility model technological scheme, all belongs in the scope of the utility model technological scheme protection any simple modification, equivalent variations and modification that above embodiment did according to the technical spirit of the utility model.

Claims

1. solenoid directional control valve; The pilot valve (2) that comprises the main valve (3) of the valve body (31) that is provided with tubular, is communicated with main valve (3) through four capillaries (d, e, s, c); Piston element in the slip of valve body (31) inner chamber; It is characterized in that: a said wherein capillary (d) end is connected with pilot valve (2), and the other end is connected with the valve body (31) that is communicated with compressor (4) relief opening.

2. solenoid directional control valve according to claim 1; It is characterized in that: said valve body (31) inner chamber is divided into independently sealed cavity of three of left, center, right by piston element; Enclosed cavity (301) during said capillary tube (d) is communicated with; Capillary tube (e) is communicated with left enclosed cavity (303), and capillary tube (s) is communicated with right enclosed cavity (302).

3. solenoid directional control valve according to claim 2; It is characterized in that: the relative valve body (31) of enclosed cavity (301) is provided with capillary tube mounting hole (304) in described, and capillary tube (d) is connected fixing with valve body (31) through capillary tube mounting hole (304).

4. solenoid directional control valve according to claim 3 is characterized in that said capillary tube mounting hole (304) is the flange hole.

5. according to claim 3 or 4 described solenoid directional control valves; It is characterized in that: described main valve (3) also comprises lining (8); One end of lining (8) is pressed into the capillary tube mounting hole (304) of valve body (31), and capillary tube (d) inserts in the lining (8) from the other end of lining (8).