CN101338825A - Electromagnetic valve - Google Patents
Electromagnetic valve Download PDFInfo
- Publication number
- CN101338825A CN101338825A CNA2007100697237A CN200710069723A CN101338825A CN 101338825 A CN101338825 A CN 101338825A CN A2007100697237 A CNA2007100697237 A CN A2007100697237A CN 200710069723 A CN200710069723 A CN 200710069723A CN 101338825 A CN101338825 A CN 101338825A
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- valve
- end cap
- sleeve pipe
- main valve
- electromagnetic
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Abstract
The present invention relates to a novel electromagnetic valve with a pilot valve structure, which belongs to a system control element in a refrigeration-circulating system. The prior art has the defect that the structural problem causes the injury of the surface quality of a small valve seat, which reduces the qualified rate of products. The electromagnetic valve comprises a main valve, a pilot valve and an electromagnetic coil; wherein, the pilot valve is provided with a bushing; a small valve seat is welded in the cavity of the bushing; the end of the bushing, which is close to the electromagnetic coil, is hermetically welded with an end enclosure, and the other end of the bushing is blocked by an end cover. Since the end of the bushing, which is close to the small valve seat, is blocked by the end cover, both ends of the bushing are open, particularly, the end of the bushing, which is close to the small valve seat, is open, thereby, after being welded, the small valve seat can be precisely processed in order to avoid the injury of the surface quality of the small valve seat caused by welding, ensure the precision degree of the surface of the small valve seat and increase the qualified rate of products. Meanwhile, since the structure is simple, the qualified rate of mass production can be ensured.
Description
Technical field
The present invention relates to the solenoid valve of the band pilot valve that refrigerating circulation system uses, as the reversing solenoid valve that uses on the heat pump air conditioner, this solenoid valve is used for the flow direction that heat pump type air conditioner changes refrigeration working medium, realize the function that heat pump type air conditioner system refrigeration in summer, winter heat, it also can be used for the defrost of heat pump type air conditioner system simultaneously.
Background technique
The structural principle of original solenoid valve scheme is made up of electromagnetic coil 1, pilot valve 2, main valve 3 three parts as shown in Figure 1.Its structure and working principle are described below:
Main valve comprises a columnar valve body 3.1, the vent connection D (being the zone of high pressure) that is connected with exhaust outlet of compressor is arranged on it, the air-breathing adapter S (being low pressure area) that is connected with the compressor air suction mouth, the adapter E that is connected with indoor heat converter, the adapter C that is connected with outdoor heat converter, there are end cap 3.3 sealing at the valve body two ends, interior welds has valve seat 3.6, also have slide block 3.5 and pair of pistons 3.4 with connecting rod 3.2 assemblings, valve seat and the slide block kinematic pair that partners, piston and valve body are then formed another to kinematic pair, by piston the main valve inner chamber are separated into a left side (E side), in, right (C side) three chambers.
Pilot valve comprises the semi-enclosed sleeve pipe 2.8 of pen cap shape, the right-hand member of its charged magnetic coil is welded with end socket 2.1 and (is fixed with divided magnetic ring 2.2 during interchange, then can not adorn during direct current), the inner chamber left side is welded with little valve seat 2.9, have four step through-holes (four step holes also can be cross arrangements) on the little valve seat, and part on the right side not to be welded with according to left-hand and pass taking over of sleeve pipe with main valve D, left end cap, S takes over the capillary tube d/e/s/c that is connected with right end cap, and (so the pilot valve inner chamber is the zone of high pressure, and s is a low pressure area), cannula cavity has the core iron 2.4 that can horizontally slip and suppresses returning spring 2.3 in its hole, be connected as a single entity by riveted joint in addition, trailing frame 2.5 and the spring sheet 2.6 of riveted fixing in the core iron hole together then, the trailing frame left end has perforate, the sliding bowl 2.7 that the bottom has shrinkage pool promptly is inlaid in this hole, spring sheet then roof pressure on the top of sliding bowl, it is close on the little valve base surface sliding bowl lower end 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 tube s) is a low pressure area, and its back (being the pilot valve inner chamber) is the zone of high pressure, therefore sliding bowl is bearing the difference force that produces therefrom, and the sealing of kinematic pair is mainly realized by this difference force.
When air-conditioning needs refrigerating operaton, the electromagnetic coil no electric circuit, under the effect of returning spring, core iron drives sliding bowl and moves to left together, thereby make e/s, the c/d capillary tube communicates respectively, because taking over, S is low pressure area, so the gas in chamber, a main valve left side passes through e, s capillary tube 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 air capillaceous, thereby become the zone of high pressure, so between the chamber, the left and right sides of main valve, just formed a pressure difference, 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 refrigeration agent circulation path of internal system was: pressurized gas → D adapter → valve body → C adapter → outdoor heat converter → throttle element → indoor heat converter → E adapter → slide block → S that compressor is discharged take over → is sucked by compressor then, so system is in the refrigeration work state.
When air-conditioning needed heating operation, electromagnetic coil is energising just, and 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/s, e/d capillary tube are communicated respectively.As mentioned above, the right chamber of main valve just becomes low pressure area, left chamber then becomes the zone of high pressure, 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 refrigeration agent circulation path of this moment is: exhaust outlet of compressor → D adapter → valve body → E adapter → indoor heat converter → throttle element → outdoor heat converter → C adapter → slide block → S adapter → compressor air suction mouth heats working state so system is in.
Just can 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 vaporizer of refrigerating state, outdoor heat converter has then become vaporizer from condenser, thus the purpose of the dual-use that makes air-conditioning realize freezing summer to heat winter.
Because the sleeve pipe of original scheme is the semi-enclosed structure of pen cap shape, so little valve base surface 2.9.1 processes afterwards earlier to weld, promptly after welding, do not reprocess, because the heat affecting of being welded, its surface quality is subjected to damage to a certain degree, so that the up-to-standard rate after producing in batches is lower, and the process scrappage is higher.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is that the little valve base surface quality that causes because of reasons in structure that overcomes that prior art exists sustains damage and reduces the defective of product percent of pass, and a kind of electromagnetic valve is provided.For this reason, the present invention is by the following technical solutions:
Electromagnetic valve, comprise main valve, pilot valve and electromagnetic coil, described pilot valve has a sleeve pipe, little valve seat of welding in the inner chamber of described sleeve pipe, one end of the close electromagnetic coil of described sleeve pipe is by the end socket welded seal, and the other end that it is characterized in that described sleeve pipe is by an end cap shutoff.
As the further of technique scheme improved and replenish, the present invention also can comprise following additional technical feature:
Described electromagnetic valve is characterized in that the end cap described in the described pilot valve is welded on the end that described sleeve pipe closes on little valve seat.
Described electromagnetic valve is characterized in that the end cap described in the described pilot valve is embedded in the described sleeve pipe.
Described electromagnetic valve is characterized in that the end cap described in the described pilot valve has a flanging, and this flanging contacts with the inwall of described sleeve pipe.
Described electromagnetic valve is characterized in that the sleeve pipe described in the described pilot valve is a stainless steel.
Described electromagnetic valve is characterized in that the end cap described in the described pilot valve is a stainless steel.
Described electromagnetic valve, the valve body that it is characterized in that described main valve is a stainless steel.
Described electromagnetic valve when it is characterized in that described sleeve pipe and described little valve seat weld, has e, s, c, d four capillaries and described sleeve pipe, described little valve seat welded seal.
Described electromagnetic valve is characterized in that described main valve, has E, S, four adapters of C, D, and the two ends of described main valve have end cap; Described e capillary tube is taken over the another side of connection, the described main valve of c capillary tube with the end cap connection by E adapter side, the s capillary tube of described main valve with the S of described main valve and is taken over connection by end cap connection, the d capillary tube of C adapter side with the D that is connected with exhaust outlet of compressor of described main valve.
Described electromagnetic valve is characterized in that described main valve, has E, S, four adapters of C, D, and the two ends of described main valve have end cap; Described e capillary tube is taken over the another side of connection, the described main valve of c capillary tube with the end cap connection by C adapter side, the s capillary tube of described main valve with the S of described main valve and is taken over connection by end cap connection, the d capillary tube of E adapter side with the D that is connected with exhaust outlet of compressor of described main valve.
Described electromagnetic valve is characterized in that described main valve is Twoway valves or three-way valve.
The invention has the beneficial effects as follows: by close on end cap of an end shutoff of little valve seat at sleeve pipe, from but the sleeve pipe two ends all are hatch frame, especially be arranged to hatch frame at an end that closes on little valve seat, after being convenient to weld little valve seat little valve seat is carried out precision machining, eliminate thus because the damage of the little valve base surface quality that welding causes, guarantee little valve base surface precision, improve product percent of pass; Simultaneously, because this is simple in structure, be beneficial to the up-to-standard rate that guarantees batch process.
The present invention simultaneously is by closing on end cap of an end shutoff of little valve seat at sleeve pipe, improve rear sleeve like this, end cap can adopt stainless steel to process, and helps reducing pilot valve like this and reduces the heat transfer loss.
Description of drawings
Fig. 1 is the prior art structural representation.
Fig. 2 is a structural representation of the present invention.
Among the figure:
The 1-electromagnetic coil;
2-pilot valve, 2.1-end socket, 2.2-divided magnetic ring, 2.3-returning spring, 2.4-core iron, 2.5-trailing frame, 2.6-spring sheet, the sliding bowl of 2.7-, 2.8-sleeve pipe, the little valve seat of 2.9-, the little valve base surface of 2.9.1-, 2.10-end cap, 2.10.1-end cap flanging;
3-main valve, 3.1-valve body, 3.2-connecting rod, 3.3-end cap, 3.4-piston, 3.5-slide block, 3.6-valve seat;
The 4-compressor;
The 5-outdoor heat converter;
The 6-throttle element;
The 7-indoor heat converter.
Embodiment
The present invention will be further described in detail below in conjunction with Figure of description.
As shown in Figure 2, this solenoid valve is compared with structure shown in Figure 1, is made of main valve 3, pilot valve 2 and electromagnetic coil 1 equally, and its detailed structure is except the difference of hereinafter addressing, and all the other structures and working principle and prior art do not have essential distinction, do not repeat them here.
The difference part of solenoid valve shown in Figure 2 and structure shown in Figure 1 is the structure of its pilot valve:
The sleeve pipe 2.8 of its pilot valve closes on an end (left end among the figure) of little valve seat by end cap 2.10 shutoff, and is common, and this end cap 2.10 closes on an end of little valve seat 2.9 at sleeve pipe 2.8 with the form shutoff of welding; For convenient welding and guarantee good sealing effect, end cap 2.10 is embedded in the sleeve pipe 2.8, and a ring-type flanging 2.10.1 is set with the area of contact of increase at end cap 2.10 edges, reaches better welded seal effect (as by soldering) with sleeve pipe 2.8 interior wall.
According to such structure, when the little valve seat of assembling pilot valve, earlier little valve seat is welded in the sleeve pipe, afterwards precision machining is carried out on its surface, the damage that elimination causes because of welding, afterwards at cannula tip welding end cap, high up-to-standard rate and stability after guaranteeing thus to produce in batches
All the other structures and the assembling of this product do not relate to the technical problem to be solved in the present invention, so its fit gets final product according to prior art, therefore will not give unnecessary details at this yet.
In addition, addressed main valve structure among the present invention with four adapters, and when reality is implemented, the main valve structure can be designed to three adapters (as by E adapter or C adapter are ended) and become three-way valve, also the main valve structure can be designed to two adapters becomes Twoway valves (as the structural type of electromagnetism reversing valve), does not repeat them here.
Claims (11)
1, electromagnetic valve, comprise main valve (3), pilot valve (2) and electromagnetic coil (1), described pilot valve (2) has a sleeve pipe (2.8), a welding little valve seat (2.9) in the inner chamber of described sleeve pipe (2.8), one end of the close electromagnetic coil of described sleeve pipe is by end socket (2.1) welded seal, and the other end that it is characterized in that described sleeve pipe (2.8) is by an end cap (2.10) shutoff.
2, electromagnetic valve according to claim 1 is characterized in that the end cap described in the described pilot valve (2.10) is welded on an end of described sleeve pipe (2.8).
3, electromagnetic valve according to claim 1 and 2 is characterized in that the end cap described in the described pilot valve (2.10) is embedded in the described sleeve pipe (2.8).
4, electromagnetic valve according to claim 3 is characterized in that the end cap described in the described pilot valve (2.10) has a flanging (2.10.1), and this flanging (2.10.1) contacts with the inwall of described sleeve pipe (2.8).
5, electromagnetic valve according to claim 1 is characterized in that the sleeve pipe described in the described pilot valve (2.8) is a stainless steel.
6, electromagnetic valve according to claim 1 and 2 is characterized in that the end cap described in the described pilot valve (2.10) is a stainless steel.
7, electromagnetic valve according to claim 1, the valve body (3.1) that it is characterized in that described main valve (3) is a stainless steel.
8, electromagnetic valve according to claim 1 when it is characterized in that described sleeve pipe (2.8) with described little valve seat (2.9) welding, has e, s, c, d four capillaries and described sleeve pipe (2.8), described little valve seat (2.9) welded seal.
9, electromagnetic valve according to claim 8 is characterized in that described main valve (3), has E, S, four adapters of C, D, and the two ends of described main valve (3) have end cap; Described e capillary tube is taken over the another side of connection, the described main valve of c capillary tube (3) with end cap (3.3) connection by E adapter side, the s capillary tube of described main valve (3) with the S of described main valve (3) and is taken over connection by end cap connection, the d capillary tube of C adapter side with the D that is connected with exhaust outlet of compressor of described main valve (3).
10, electromagnetic valve according to claim 8 is characterized in that described main valve (3), has E, S, four adapters of C, D, and the two ends of described main valve (3) have end cap; Described e capillary tube is taken over the another side of connection, the described main valve of c capillary tube (3) with the end cap connection by C adapter side, the s capillary tube of described main valve (3) with the S of described main valve (3) and is taken over connection by end cap connection, the d capillary tube of E adapter side with the D that is connected with exhaust outlet of compressor of described main valve (3).
11, electromagnetic valve according to claim 1 is characterized in that described main valve (3) is Twoway valves or three-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100697237A CN101338825A (en) | 2007-07-02 | 2007-07-02 | Electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100697237A CN101338825A (en) | 2007-07-02 | 2007-07-02 | Electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101338825A true CN101338825A (en) | 2009-01-07 |
Family
ID=40212959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100697237A Pending CN101338825A (en) | 2007-07-02 | 2007-07-02 | Electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101338825A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235522A (en) * | 2010-04-30 | 2011-11-09 | 浙江三花制冷集团有限公司 | Heat exchange equipment and reversing valve thereof |
| CN103089727A (en) * | 2011-10-31 | 2013-05-08 | 约克广州空调冷冻设备有限公司 | Reversing valve |
| CN107061790A (en) * | 2017-06-17 | 2017-08-18 | 浙江省平湖市北辰实业有限公司 | A kind of inexpensive stainless steel four-way valve |
-
2007
- 2007-07-02 CN CNA2007100697237A patent/CN101338825A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235522A (en) * | 2010-04-30 | 2011-11-09 | 浙江三花制冷集团有限公司 | Heat exchange equipment and reversing valve thereof |
| CN102235522B (en) * | 2010-04-30 | 2014-12-10 | 浙江三花制冷集团有限公司 | Heat exchange equipment and reversing valve thereof |
| CN103089727A (en) * | 2011-10-31 | 2013-05-08 | 约克广州空调冷冻设备有限公司 | Reversing valve |
| CN103089727B (en) * | 2011-10-31 | 2016-03-02 | 约克广州空调冷冻设备有限公司 | Selector valve |
| CN107061790A (en) * | 2017-06-17 | 2017-08-18 | 浙江省平湖市北辰实业有限公司 | A kind of inexpensive stainless steel four-way valve |
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Open date: 20090107 |