CN201233783Y - Electromagnetic valve coil - Google Patents

Abstract

A solenoid valve coil is composed of a coil component and a magnetizer. The magnetizer is an integrated structure which has folded edges, so that an accommodating chamber is formed. The coil component is arranged in the accommodating chamber and is matched with the magnetizer. The solenoid valve coil is characterized in that the magnetizer is of a flanging structure surrounded on the periphery, and a first end face, a second end face, a middle section and a connecting section are further formed. The sectional area of a magnetic conduction magnetic circuit is twice as large as that on the basis of the prior art, thereby greatly improving the action performance of the solenoid valve coil. Meanwhile, both the area of the magnetizer and the heat dissipation area of the solenoid valve coil are increased, thereby effectively reducing the temperature rise of the coil.

Description

Electromagnetic valve coil

Technical field

The utility model relates to a kind of electromagnetic valve coil, particularly a kind of magnetizer structure that is used for the electromagnetically operated valve of the refrigerating system control refrigerant flow direction with coil.

Background technology

Be that example is specifically described below with the solenoid directional control valve, the air-conditioning refrigeration system that uses solenoid directional control valve as shown in Figure 1, solenoid directional control valve is made up of electromagnetic valve coil 1, pilot valve 2, main valve 3 three parts, its structure and operation principle are described below:

Main valve comprises a columnar valve body 31, the entrance sleeve D (being the higher-pressure region) that is connected with compressor outlet (exhaust outlet) is arranged on it, the discharge connection S (being low-pressure area) that is connected with suction port of compressor end (air entry), the conduit E that is connected with indoor heat converter, the conduit C that is connected with outdoor heat converter, there are end cap 33 sealing at the valve body two ends, interior welds has valve seat 36, slide block 35 that also useful connecting rod 32 fuses and pair of pistons 34, valve seat and the slide block kinematic pair that partners, piston and valve body are then formed another to kinematic pair, be separated into left chamber's (E side) that the position can change by piston, main valve inner chamber (301), right chamber (C side), piston then leans on shelves with the end cap face in valve body as the location, in the valve pocket structure of valve body of main valve and end cap composition, connection e is arranged, c connecting portion capillaceous, be to drive slide block in the stroke that end face limited of a pair of two end caps of piston in valve body that connect by connecting rod to slide, so that realize that by the mobile displacement of slide block E/C takes over the commutation of inner fluid.

Pilot valve comprises sleeve pipe 28, its right-hand member is welded with end socket 21, form the pilot valve inner chamber, the inner chamber left side is welded with little valve seat 29, have four step through-holes on the little valve seat, be welded with capillary d/e/s/c on the through hole respectively, capillary d and main valve D take over, capillary e and chamber, main valve left side valve body, capillary s and S take over, capillary c is connected respectively with the right chamber of main valve valve body, therefore the pilot valve inner chamber is the higher-pressure region, and s is a low-pressure area, inner chamber has the core iron 24 that can horizontally slip and suppresses returning spring 23 in its hole, be connected as a single entity by riveted joint in addition, trailing frame 25 and the spring leaf 26 of riveted and fixed in the core iron hole together then, trailing frame has perforate, the sliding bowl 27 that the bottom has shrinkage pool promptly is inlaid in this hole, spring leaf then roof pressure on the top of sliding bowl, it is close on the little valve base surface sliding bowl lower surface, sliding bowl can slide on little valve base surface with core iron/trailing frame assembly, sliding bowl has been formed a kinematic pair with little valve seat, its inner chamber (being capillary s) is a low-pressure area, and its back (being the pilot valve inner chamber) is the higher-pressure region, and therefore sliding bowl is bearing the difference force that produces therefrom, and the sealing of kinematic pair is mainly realized by this difference force.

Electromagnetic valve coil 1 comprises by the insulation coating and is encapsulated in the winding on the skeleton and the coil component 11 that forms and be positioned at the magnetic conductor 12 of support that described insulation coats the whole electromagnetic valve coil of conduct of beyond the region of objective existence, outwards draw leaded terminal from described coil component 11, described skeleton has installing hole, magnetic conductor 12 also is provided with installing hole, adapts with the installing hole of skeleton; Electromagnetic valve coil is sleeved on the circular casing 26 of pilot valve corresponding and fastening by screw with the scope of activities of core iron 27 by installing hole.

When air-conditioning needs refrigerating operaton, electromagnetic valve coil 1 no power, under the effect of returning spring, core iron drives sliding bowl and moves to left together, thereby make e and s capillary, c communicates respectively with the d capillary, because taking over, S is low-pressure area, so the gas in chamber, a main valve left side passes through e, s capillary and sliding bowl and flow into low-pressure area, therefore left chamber becomes low-pressure area, and the right chamber of main valve is owing to there be replenishing from c high pressure gas capillaceous, thereby become the higher-pressure region, so between the chamber, the left and right sides of main valve, just formed a pressure differential, and therefore slide block and piston have been pushed to left side, make E, S takes over and communicates, D, C takes over and communicates, and this moment, the cold-producing medium circulation path of internal system was: gases at high pressure → D adapter → main valve inner chamber → C adapter → outdoor heat converter → restricting element → indoor heat converter → E adapter → S that compressor is discharged take over → is sucked by compressor then, and system is in the refrigeration work state.

When air-conditioning needs heating operation, electromagnetic valve coil 1 energising, under the effect of coil electromagnetic force, core iron overcomes the active force of returning spring and drives sliding bowl and move to right together, and c is communicated respectively with the d capillary with s capillary, e.As mentioned above, the right chamber of main valve just becomes low-pressure area, left chamber then becomes the higher-pressure region, therefore slide block and piston just have been pushed to the right side, make C, and S takes over and communicates, D, E takes over and communicates, and the cold-producing medium circulation path of this moment is: exhaust outlet of compressor → D adapter → main valve inner chamber → E adapter → indoor heat converter → restricting element → outdoor heat converter → C adapter → S adapter → compressor air suction mouth, system is in and heats operating state.

Realize the commutation of main valve as mentioned above by the commutation of pilot valve, and by the switching of main valve to pipeline, just make indoor heat converter become the condenser of the state that heats from the evaporator of refrigerating state, outdoor heat converter has then become evaporator from condenser, thus the purpose of the dual-use that makes air-conditioning realize freezing summer to heat winter.

The solenoid directional control valve of said structure, core iron overcome the active force of returning spring and drive the active force that sliding bowl moves to right together derive from the electromagnetic force that electromagnetic valve coil produces under "on" position.Therefore, the performance of electromagnetic valve coil counts for much to the overall performance of electromagnetically operated valve; And, the most magnetic fluxs that produce behind the coil electricity form close access through core iron 24, end socket 21, magnetic conductor 14, the quality of the performance of electromagnetic valve coil directly depends on the transmission situation of magnetic flux, the effect of magnetic conductor is that magnetic circuit can be compiled by it, thereby electromagnetic performance is improved, so the structural design of magnetic conductor have bigger influence for the performance of electromagnetic valve coil.

Fig. 2 is the magnetizer structure schematic diagram of prior art; Fig. 3 is the left view of Fig. 2.

Magnetic conductor 12 is three flanging structures of integral type, and outward appearance is " ∩ " shape substantially, has two first relative end faces 121 and second end face 122 and interlude 123, thereby forms container cavity 127, and coil component 11 is positioned in the container cavity 127; First end face 121 is parallel substantially with second end face 122, slightly bends inwards, and width between the two is slightly smaller than the thickness of coil component 11, thereby coil component 11 and magnetic conductor 12 are closely cooperated.First end face 121 is provided with installing hole 124, can be enclosed within on the sleeve pipe 28 of pilot valve; Second end face 121 is provided with screw hole 125, and when mounted, screw passes screw hole 125 and cooperates with screwed hole on the core iron 24, thereby electromagnetic valve coil 1 is installed on the sleeve pipe 28 of pilot valve; The bottom of second end face 121 is provided with groove 126, adapts with it, and the end of coil component is provided with the lead-in wire boss; The inwall of first end face 121 is provided with the positioning boss 128 of a pair of identical height, by engaging and the effect of positioning boss 128 of lead-in wire boss and groove 126, thereby makes coil component horizontal and vertical rotation can not take place.

In the art, generally use magnetic conductance (G _δ) weigh the magnetic conduction ability of material, magnetic resistance (R _m) the expression magnetic circuit is to the inhibition of magnetic flux, magnetic conductance (G _δ), magnetic resistance (R _m), the relation between the permeability (μ), magnetic circuit sectional area (S), magnetic circuit average length (L) can be referring to following formula:

$G_{\mathrm{\δ}}=\frac{\mathrm{\μS}}{l}$ ………………………………………………………………………(1)

$R_m=\frac{1}{G_{\mathrm{\δ}}}=\frac{l}{\mathrm{\μS}}$ ………………………………………………………………………(2)

Can draw magnetic circuit sectional area S and magnetic conductance G by formula (1) (2) _δBe directly proportional, with magnetic resistance R _mBe inversely proportional to, promptly magnetic circuit sectional area S is more little, magnetic conductance G _δMore little, magnetic resistance R _mBig more.

Fig. 1 shows the magnetic circuit schematic diagram of line solenoid valve coil structures when energising of prior art simultaneously, most magnetic fluxs that electromagnetic valve coil produces transmit by magnetic circuit A, and magnetic conduction magnetic circuit sectional area is less, so magnetic conductance is less, magnetic resistance is bigger, so that the performance of electromagnetic valve coil is relatively poor.And the surface radiating area of coil is little, and the line solenoid valve coil temperature rise is higher.

The utility model content

The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the deficiency that prior art exists, and a kind of electromagnet valve coil that improves performance and reduce coil temperature rise is provided.The utility model is by the following technical solutions for this reason:

A kind of electromagnetic valve coil is made up of coil component and magnetic conductor, and described magnetic conductor is an integral type flanging structure, thereby forms container cavity, and described coil component places in the described container cavity and with magnetic conductor and fixes.It is characterized in that described magnetic conductor is the end to end flanging structure that the four sides flanging forms, and forms first end face, second end face, interlude and linkage section.

Preferably, the centre of described first end face is provided with breach, and first end face is divided into two parts.

Preferably, the middle part of described first end face is slightly to the second end face direction bending.

Preferably, described interlude and linkage section be the deviation certain angle in opposite directions, and the angle of both and second end face is all less than 90 °.

Preferably, described coil component and described magnetic conductor are fixed by interference fit.

Preferably, at least one knuckle of described magnetic conductor is provided with v-notch.

Preferably, the material of described magnetic conductor is a mild steel.

The beneficial effects of the utility model are:

Only by changing magnetizer structure, under the constant situation of other condition, make the sectional area of magnetic conduction magnetic circuit increase by one times on the basis of existing technology, equally, magnetic conductance is increased be twice, magnetic resistance reduces half, has improved the performance of electromagnetic valve coil to a great extent.And increased the surface radiating area, reduced coil temperature rise.

Description of drawings

Fig. 1 is the electromagnetic valve structure of prior art and the schematic diagram that uses in refrigerating system;

Fig. 2 is the magnetizer structure schematic diagram of prior art;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is an electromagnetic valve coil schematic diagram of the present utility model;

Fig. 5 is the utility model magnetizer structure schematic diagram;

Fig. 6 is the left view of Fig. 5;

Fig. 7 is the rearview of Fig. 5;

Fig. 8 reaches the schematic diagram that uses in refrigerating system for the utility model electromagnetic valve structure

Among the figure:

1-electromagnetic valve coil, 11-coil component, 12/12 '-magnetic conductor, 120-breach, 121/121 '-the first end face, 122//122 '-the second end face, 123/123 '-interlude, 124/124 '-installing hole, 125/125 '-screw hole, 126/126 '-groove, 127/127 '-accommodation section, 128/128 '-positioning boss, 129-linkage section, 13-V type breach.

2-pilot valve, 21-end socket, 22-divided magnetic ring, 23-returning spring, 24-core iron, 25-trailing frame, 26-spring leaf, the sliding bowl of 27-, 28-sleeve pipe, 281/-cannula tip, the little valve seat of 29-, d/e/s/c-capillary;

3-main valve, 31-valve body, 32-connecting rod, 33-end cap, 34-piston, 35-slide block, 36-valve seat, D-entrance sleeve, S-discharge connection, E/C-conduit.

The 4-compressor;

5-(outdoor) heat exchanger;

The 6-restricting element;

7-(indoor) heat exchanger.

Embodiment

In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with drawings and embodiments.

Electromagnetic valve coil is mainly by coil component 11 and magnetic conductor 12 ' form.Coil component 11 is encapsulated in the winding on the skeleton by the insulation coating and forms, and the end of coil component 11 is provided with the lead-in wire boss, and coil lead is drawn from the lead-in wire boss.

Coil component 11 is provided with installing hole, and electromagnetic valve coil is sleeved on the circular casing 26 of pilot valve corresponding and fastening by screw with the scope of activities of core iron 27 by installing hole.

The operation principle of electromagnetically operated valve in refrigerating system is existing in background technology to be introduced in detail, and electromagnetically operated valve operation principle of the present utility model is identical with the electromagnetically operated valve of prior art, does not repeat them here.

Below in conjunction with Fig. 4, Fig. 5, Fig. 6, Fig. 7 emphasis magnetizer structure of the present utility model is described.

Referring to Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 4 is an electromagnetic valve coil schematic diagram of the present utility model; Fig. 5 is the utility model magnetizer structure schematic diagram; Fig. 6 is the left view of Fig. 5; Fig. 7 is the rearview of Fig. 5;

Magnetic conductor 12 ' form for bending behind the steel plate forming, thereby form the completely encircle structure, comprise first end face 121 ', 122 ', and interlude 123 ' and linkage section 129, first end face 121 ' the centre be provided with breach 120, thereby with first end face 121 ' be divided into two parts.And first end face 121 ' pars intermedia offer installing hole 124 ', thereby on the head and the tail two ends of integral type magnetic conductor, respectively form a breach.

First end face 121 ' and 122 ' almost parallel, but first end face 121 ' notch part slightly to second end face 121 ' bending certain angle, thereby make first end face 121 ' and 122 ' between spacing less than the thickness d of coil component 11, thereby when coil component 11 and magnetic conductor 12 ' by interference fit fixedly the time, can produce initial pressure, make coil component 11 not can from magnetic conductor 12 ' come off.

Simultaneously, interlude 123 ' and linkage section 129 almost parallels, but both are the deviation certain angle in opposite directions, make both and second end face 122 ' angle be controlled at 85.5 °～90 °, can make like this first end face 121 ' breach 120 under initial condition, be in fit-state, more help coil component 11 and magnetic conductor 12 ' fixing.

Second end face 121 ' the bottom offer groove 126 ', top be provided with the positive stop lug boss 128 of equal height ', its effect is same as the prior art, all to be in order engaging with the lead-in wire boss of coil component end, and to realize the purpose of location.

Second end face 121 ' the centre offer screw hole 125 ', when coil component 11 cooperated with the pilot valve sleeve pipe of electromagnetically operated valve with magnetic conductor 12, screw passed screw hole 125 ' with the screwed hole of pilot valve end socket and cooperates fixing.

First end face 121 ' with adjacent interlude 123 ' and four knuckle places of linkage section 129 be provided with v-notch 13, the existence of v-notch 13, make the easier bending of steel plate and form novel magnetizer structure, v-notch is set at all knuckle places of above-mentioned end face, effect can be better.

Fig. 8 shows the magnetic circuit schematic diagram of line solenoid valve coil structures of the present utility model when energising, most magnetic fluxs that electromagnetic valve coil produces transmit simultaneously by magnetic circuit A and magnetic circuit B, magnetic conduction magnetic circuit sectional area has increased by one times on the basis of existing technology, therefore magnetic conductance increases, magnetic resistance reduces, and has improved the performance of electromagnetic valve coil widely.

Magnetic conductor 12 ' the completely encircle structure compared with prior art, increased the area of magnetic conductor, therefore also increased the area of dissipation of electromagnetic valve coil, thereby reduced coil temperature rise.

The above only is the preferred embodiment that the utility model is used for solenoid directional control valve, is not the utility model is done any pro forma restriction, and the utility model is equally applicable to the electromagnetic valve coil of other type, such as refrigerator electromagnetically operated valve or the like.Any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Breach such as positioning boss, groove or first end face also can be arranged on other end face, magnetic conductor also can adopt other material or the like.

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

Claims (7)

1, a kind of electromagnetic valve coil, form by coil component (11) and magnetic conductor (12 ＇), described magnetic conductor (12 ＇) is an integral type flanging structure, thereby forms container cavity (127 ＇), and described coil component (11) places in the described container cavity (127 ＇) and with magnetic conductor (12 ＇) and cooperates.It is characterized in that described magnetic conductor (12 ＇) is the flanging structure of completely encircle, form first end face (121 ＇), second end face (122 ＇), interlude (123 ＇) and linkage section (129).

2, electromagnetic valve coil as claimed in claim 1 is characterized in that, the centre of described first end face (121 ＇) is provided with breach (120), and (121 ＇) is divided into two parts with first end face.

3, electromagnetic valve coil as claimed in claim 2 is characterized in that, the middle part of described first end face (121 ＇) is slightly to second end face (122 ＇) direction bending.

4, electromagnetic valve coil as claimed in claim 1 is characterized in that, described interlude (123 ＇) and linkage section (129) be the deviation certain angle in opposite directions, and the angle of both and second end face (122 ＇) is all less than 90 °.

As the described electromagnetic valve coil of the arbitrary claim of claim 1-4, it is characterized in that 5, described coil component (11) is fixed by interference fit with described magnetic conductor (12 ＇).

6, electromagnetic valve coil as claimed in claim 1 is characterized in that, at least one knuckle of described magnetic conductor (12 ＇) is provided with v-notch (15).

7, electromagnetic valve coil as claimed in claim 1 is characterized in that, the material of described magnetic conductor (12 ＇) is a mild steel.

Images