CN201232773Y - Large-capacity four-way change valve - Google Patents
Large-capacity four-way change valve Download PDFInfo
- Publication number
- CN201232773Y CN201232773Y CNU2008201202123U CN200820120212U CN201232773Y CN 201232773 Y CN201232773 Y CN 201232773Y CN U2008201202123 U CNU2008201202123 U CN U2008201202123U CN 200820120212 U CN200820120212 U CN 200820120212U CN 201232773 Y CN201232773 Y CN 201232773Y
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- China
- Prior art keywords
- valve
- signal pipe
- stop
- piston
- way
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- Expired - Fee Related
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Abstract
The utility model discloses a high-capacity four-way reversing valve, comprising a main valve internally provided with a piston, a first signal pipe, a second signal pipe, a third signal pipe and a guide valve. One ends of the first signal pipe, the second signal pipe and the third signal pipe are respectively connected with the main valve, and the other ends are respectively connected with the guide valve; the second signal pipe and the third signal pipe are respectively connected with a first stop valve and a second valve in series. In the utility model, stop valves are connected with the second signal pipe and the third signal pipe in series, which facilitates the maintenance and saves the maintenance time; during the maintenance, the valve body does not need to be opened, and the maintenance will not affect the performance of the four-way reversing valve, thus greatly saving the maintenance cost.
Description
[technical field]
The utility model relates to heat pump type central air-conditioner four-way change-over valve, particularly to the improvement of this four-way valve structure.
[technical background]
At present central air-conditioner with big capacity piston type four-way change-over valve structure as shown in Figure 1, its structure is made of jointly main valve, signal tube, pilot valve.
Its working principle such as accompanying drawing 2, shown in 3: at work, when coil is in the power failure state of Fig. 2, first signal tube is communicated with the 3rd signal tube, pressurized gas flow to right-hand member by main valve piston center hole and pilot valve, when coil be in Fig. 3 during electricity condition, the 3rd signal tube is communicated with the low pressure air suction pipe, the right-hand member of main valve body will be communicated with the low pressure air suction pipe by pilot valve, pressurized gas are discharged, first signal tube is communicated with the secondary signal pipe simultaneously, and pressurized gas flow to left end by pilot valve, and pressure reduction makes the one-way valve of main valve piston center hole shift to right-hand member, final pressurized gas will flow to left end by pilot valve and main valve piston center hole, and main valve piston is shifted to right-hand member.
In said process, if the pressure reduction at piston two ends is very little, at this moment piston moves slowly, when piston is in neutral position shown in Figure 4, four-way valve height pressure pipe can form the phenomenon of collaborating, and at this moment the pressure reduction at piston two ends rapidly disappears, and makes piston be parked in the valve body neutral position, finally cause air conditioner not work, and form great Accident due to quality.
For the processing of this kind quality accident, be before this refrigeration agent in the air-conditioning system to be extracted out at present, open the flange end cap of four-way valve then, shift piston one end of valve body onto with instrument, cover the flange end cap at last, charge into refrigeration agent, the operation unit.Not only the processing time long, loss big (loss of refrigerant), and also can the performance of four-way valve being exerted an influence when opening valve body is easy to generate nonvolatil damage, and four-way valve is scrapped.
[summary of the invention]
The purpose of this utility model is exactly to propose a kind of big capacity four-way change-over valve in order to solve problems of the prior art, can convenient for maintaining, save engineering time, and reduce loss of refrigerant, can't influence the four-way valve performance.
For achieving the above object, the utility model patent has proposed a kind of big capacity four-way change-over valve, comprise that inside is provided with the main valve of piston, first signal tube, secondary signal pipe, the 3rd signal tube, pilot valve, one end of described first signal tube, secondary signal pipe and the 3rd signal tube is connected on the main valve, the other end is connected respectively on the pilot valve, is in series with first stop valve and second stop valve on described secondary signal pipe and the 3rd signal tube respectively.
As preferably, have first one-way valve on described first stop valve, have second one-way valve on second stop valve.
As preferably, described first stop valve and second stop valve adopt the spheroidal stop valve of band release needle-valve.
As preferably, described pilot valve adopts fixed block to be fixed on the main valve.
The beneficial effect of the utility model patent: the utility model stop valve of on secondary signal pipe and the 3rd signal tube, connecting, made things convenient for maintenance, saved engineering time, do not need to extract out refrigeration agent during maintenance, do not need to open valve body yet, maintenance process can not impact the four-way valve performance, and greatly reduces maintenance cost.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.
[description of drawings]
Fig. 1 is the structural representation of big capacity four-way change-over valve in the prior art;
Fig. 2 is the schematic representation of big capacity four-way change-over valve power failure state in the prior art;
Fig. 3 is the schematic representation that big capacity four-way change-over valve gets electricity condition in the prior art;
Fig. 4 is the schematic representation that piston mediates in the big capacity four-way change-over valve in the prior art;
Fig. 5 is the structural representation of the big capacity four-way change-over valve of the utility model;
Fig. 6 is the schematic representation of the big capacity four-way change-over valve of the utility model service mode.
[embodiment]
Consult Fig. 5,6, big capacity four-way change-over valve, comprise that inside is provided with the main valve 1 of piston 5, first signal tube 21, secondary signal pipe 22, the 3rd signal tube 23, pilot valve 3, one end of described first signal tube 21, secondary signal pipe 22 and the 3rd signal tube 23 is connected on the main valve 1, the other end is connected respectively on the pilot valve 3, is in series with first stop valve 41 and second stop valve 42 on described secondary signal pipe 22 and the 3rd signal tube 23 respectively.Have on described first stop valve 41 on first one-way valve, 43, the second stop valves 42 and have second one-way valve 44.Described first stop valve 41 and second stop valve 42 also can adopt the spheroidal stop valve of band release needle-valve.Described pilot valve 3 adopts fixed block 6 to be fixed on the main valve 1.
Under normal state, first stop valve 41 and second stop valve 42 all are in opening state, keep the unimpeded of secondary signal pipe 22 and the 3rd signal tube 23.Its commutation working principle is preceding identical with remodeling.When the neutral position that piston 5 is in valve body 1 needed repairing, the utility model maintenance program was as follows:
Scheme one: piston 5 is moved to right: first stop valve 41 and second stop valve 42 are closed simultaneously, use fluorine filling tank in valve body 1, to charge into high-pressure refrigerant, simultaneously second one-way valve 44 is opened, feed atmosphere from first one-way valve 43.Form the high right low pressure reduction in a left side this moment at piston 5 two ends, promote piston 5 and shift to the right side.After piston 5 moves into place, stop to fill fluorine, and close first one-way valve 43 and second one-way valve 44.Can open first stop valve 41 and second stop valve 42 of both sides this moment, the operation unit.
Scheme two: piston 5 is moved to left: first stop valve 41 and second stop valve 42 are closed simultaneously, use fluorine filling tank in valve body 1, to charge into high-pressure refrigerant, simultaneously first stop valve 41 is opened, feed atmosphere from second one-way valve 44.Form the low pressure reduction in a right high left side this moment at piston 5 two ends, promote piston 5 and shift to the left side.After piston 5 moves into place, stop to fill fluorine, and close first one-way valve 43 and second one-way valve 44.Can open first stop valve 41 and second stop valve 42 of both sides this moment, the operation unit.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (4)
1. one kind big capacity four-way change-over valve, comprise that inside is provided with the main valve of piston (5) (1), first signal tube (21), secondary signal pipe (22), the 3rd signal tube (23), pilot valve (3), one end of described first signal tube (21), secondary signal pipe (22) and the 3rd signal tube (23) is connected on the main valve (1), the other end is connected respectively on the pilot valve (3), it is characterized in that: be in series with first stop valve (41) and second stop valve (42) on described secondary signal pipe (22) and the 3rd signal tube (23) respectively.
2. a kind of big capacity four-way change-over valve as claimed in claim 1 is characterized in that: have first one-way valve (43) on described first stop valve (41), have second one-way valve (44) on second stop valve (42).
3. a kind of big capacity four-way change-over valve as claimed in claim 1 is characterized in that: described first stop valve (41) and second stop valve (42) adopt the spheroidal stop valve of band release needle-valve.
4. a kind of big capacity four-way change-over valve as claimed in claim 1 is characterized in that: described pilot valve (3) adopts fixed block (6) to be fixed on the main valve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201202123U CN201232773Y (en) | 2008-06-20 | 2008-06-20 | Large-capacity four-way change valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201202123U CN201232773Y (en) | 2008-06-20 | 2008-06-20 | Large-capacity four-way change valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232773Y true CN201232773Y (en) | 2009-05-06 |
Family
ID=40619152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201202123U Expired - Fee Related CN201232773Y (en) | 2008-06-20 | 2008-06-20 | Large-capacity four-way change valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232773Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968128A (en) * | 2010-11-08 | 2011-02-09 | 浙江盾安机械有限公司 | High-capacity four-way reversing valve |
| CN104676048A (en) * | 2013-04-28 | 2015-06-03 | 浙江盾安机械有限公司 | Four-way valve |
-
2008
- 2008-06-20 CN CNU2008201202123U patent/CN201232773Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968128A (en) * | 2010-11-08 | 2011-02-09 | 浙江盾安机械有限公司 | High-capacity four-way reversing valve |
| CN104676048A (en) * | 2013-04-28 | 2015-06-03 | 浙江盾安机械有限公司 | Four-way valve |
| CN104676048B (en) * | 2013-04-28 | 2018-10-09 | 浙江盾安机械有限公司 | A kind of four-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20130620 |